A communication method, apparatus, chip and module device

Abstract

The application discloses a communication method, device, chip and module equipment. The method comprises the following steps: receiving configuration information from a network device, wherein the configuration information is used for indicating a first corresponding relationship between a total number of preamble sending times and a preamble sending mode; wherein the preamble sending mode is used for indicating the number of target first signals and the number of preamble sending times corresponding to each target first signal; wherein a random access opportunity (RO) associated with the target first signal is used for sending a preamble, and the target first signal is a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS); and sending a preamble to the network device based on the preamble sending mode determined according to the configuration information. By using the method described in the application, the terminal can conveniently determine a suitable preamble sending mode, thereby improving the random access mechanism of the terminal and further enhancing the uplink coverage.

Description

Technical Field

[0001] This invention relates to the field of communications, and more particularly to a communication method, apparatus, chip, and module device. Background Technology

[0002] Because mobile communication system terminals are small and have limited battery capacity, their transmit power is typically not very high to ensure long battery life. Currently, the maximum transmit power of a terminal with two transmit antennas is 26dBm (400mW). Conversely, to ensure downlink transmission quality, base station equipment can have a transmit power of up to 53dBm (200W), far exceeding the terminal's transmit power. This difference in transmit power leads to the following problem: terminals located at the far end of the cell can receive downlink signals, but their initiated uplink signals cannot be recognized by the base station. To maintain coverage continuity, network planning typically uses the uplink coverage radius as a benchmark for calculating inter-station spacing. This increases the number of sites required and, because downlink signal strength is higher at cell edges, can cause severe inter-cell interference.

[0003] Furthermore, 5G introduces new frequency bands such as Sub-6GHz and millimeter waves, which are higher than the frequencies used in previous mobile communications like 2G, 3G, and 4G. This results in greater transmission losses and a more pronounced difference in uplink and downlink power. Additionally, 5G employs a flexible uplink / downlink time slot allocation, typically with downlink demand exceeding uplink demand. This leads to a bias in allocating more time slots to downlink, exacerbating the uplink / downlink imbalance. Moreover, 5G utilizes Massive MIMO technology, which further widens the gap in the number of antenna arrays between base stations and terminals, further amplifying the uplink / downlink imbalance.

[0004] However, for 5G, many applications (such as live video streaming) generate uplink traffic of similar magnitude to downlink traffic. These applications require 5G networks to have continuous, high-quality uplink coverage. Therefore, how to enhance uplink coverage is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] This application provides a communication method, apparatus, chip, and module device that enables a terminal to conveniently determine its own suitable preamble transmission method, thereby improving the terminal's random access mechanism and further enhancing uplink coverage.

[0006] Firstly, this application provides a communication method, comprising: receiving configuration information from a network device, the configuration information indicating a first correspondence between the total number of preamble transmissions and the preamble transmission method; wherein the preamble transmission method indicates: the number of target first signals and the number of preamble transmissions corresponding to each target first signal; wherein a random access opportunity (RO) associated with the target first signal is used to transmit the preamble, and the target first signal is a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS); and transmitting the preamble to the network device based on the preamble transmission method determined by the configuration information. This method enables a terminal to conveniently determine its suitable preamble transmission method, thereby improving the terminal's random access mechanism and further enhancing uplink coverage.

[0007] In conjunction with the first aspect, in one possible implementation, the sum of the number of times the preamble is transmitted for each of the target first signals is the total number of times the preamble is transmitted.

[0008] In conjunction with the first aspect, in one possible implementation, the total number of preamble transmissions is N, where N is a positive integer, and the first correspondence includes one or more of the following: the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is N; or, the number of target first signals is K, where K is a positive integer greater than 1, and the number of preamble transmissions corresponding to each target first signal includes one or more of the following: 1, 2, ..., N, and the sum of the number of preamble transmissions corresponding to each target first signal is the total number of preamble transmissions.

[0009] In conjunction with the first aspect, in one possible implementation, the first correspondence includes one or more of the following: the number of target first signals is 1, and the number of times the preamble corresponding to the target first signal is transmitted is N; or, the number of target first signals is 2, and the number of times the preamble corresponding to each target first signal is transmitted is N / 2; or, the number of target first signals is 4, and the number of times the preamble corresponding to each target first signal is transmitted is N / 4.

[0010] In conjunction with the first aspect, in one possible implementation, the configuration information is also used to indicate the priority information of each preamble transmission method when the total number of preamble transmissions is the same.

[0011] In conjunction with the first aspect, in one possible implementation, the configuration information is further used to instruct the transmission of a preamble on the RO associated with the target first signal in ascending order of the index of the target first signal.

[0012] In conjunction with the first aspect, in one possible implementation, preambles are continuously transmitted on ROs associated with the target first signal at the same index, or preambles are periodically transmitted on ROs associated with the target first signal in ascending order of the index of the target first signal, wherein the index of the target first signal associated with the ROs that transmit adjacent preambles is different.

[0013] In conjunction with the first aspect, in one possible implementation, the configuration information is further used to indicate: when the number of target first signals is greater than 1, the minimum interval of the indices of the target first signals, wherein the difference between any pairwise indices of the target first signals is not less than the minimum interval; or, in the case of different numbers of target first signals, the index set to which the indices of the target first signals belong, the index set including one or more indices, or one or more combinations of indices.

[0014] In conjunction with the first aspect, in one possible implementation, the determined preamble transmission method is determined based on the total number of preamble transmissions and the number of optional first signals, wherein the number of reference signals for the target first signal in the determined preamble transmission method is less than or equal to the number of optional first signals; wherein the reference signal received power (RSRP) of the optional first signal is greater than a first preset threshold; the optional first signal belongs to the first signal, the target first signal belongs to the optional first signal, and the first signal is the SSB or CSI-RS received from the network device.

[0015] In conjunction with the first aspect, in one possible implementation, the first preset threshold is determined based on a second correspondence between the total number of preamble transmissions and the first preset threshold, and the configuration information further indicates the second correspondence.

[0016] In conjunction with the first aspect, in one possible implementation, the total number of preamble transmissions is determined based on a third correspondence between the total number of preamble transmissions and a second preset threshold; the second preset threshold is determined based on the maximum value in the RSRP of the received first signal; and the configuration information further indicates the third correspondence.

[0017] In conjunction with the first aspect, in one possible implementation, the method further includes: receiving system information from a network device, the system information including the configuration information.

[0018] In conjunction with the first aspect, in one possible implementation, the method further includes: repeatedly sending the random access message 3Msg3 when the total number of preamble transmissions is greater than or equal to a third preset threshold.

[0019] Secondly, this application provides a communication method, the method comprising: sending configuration information to a terminal, the configuration information indicating a first correspondence between the total number of preamble transmissions and the preamble transmission method; wherein the preamble transmission method indicates: the number of target first signals and the number of preamble transmissions corresponding to each target first signal; wherein the random access opportunity (RO) associated with the target first signal is used to transmit the preamble, and the target first signal is a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS); and receiving a preamble from the terminal, wherein the preamble transmission method adopted by the terminal is determined based on the configuration information. This method enables the terminal to conveniently determine its suitable preamble transmission method, thereby improving the terminal's random access mechanism and further enhancing uplink coverage.

[0020] In conjunction with the second aspect, in one possible implementation, the sum of the number of times the preamble is transmitted for each of the target first signals is the total number of times the preamble is transmitted.

[0021] In conjunction with the second aspect, in one possible implementation, the total number of preamble transmissions is N, where N is a positive integer, and the first correspondence includes one or more of the following: the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is N; or, the number of target first signals is K, where K is a positive integer greater than 1, and the number of preamble transmissions corresponding to each target first signal includes one or more of the following: 1, 2, ..., N, and the sum of the number of preamble transmissions corresponding to each target first signal is the total number of preamble transmissions.

[0022] In conjunction with the second aspect, in one possible implementation, the first correspondence includes one or more of the following: the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is N; or, the number of target first signals is 2, and the number of preamble transmissions corresponding to each target first signal is N / 2; or, the number of target first signals is 4, and the number of preamble transmissions corresponding to each target first signal is N / 4. In conjunction with the second aspect, in one possible implementation, the configuration information is further used to indicate the priority information of each preamble transmission method when the total number of preamble transmissions is the same.

[0023] In conjunction with the second aspect, in one possible implementation, the configuration information is further used to instruct the transmission of a preamble on the RO associated with the target first signal in ascending order of the index of the target first signal.

[0024] In conjunction with the second aspect, in one possible implementation, preambles are continuously transmitted on ROs associated with the target first signal at the same index, or preambles are periodically transmitted on ROs associated with the target first signal in ascending order of the index of the target first signal, wherein the index of the target first signal associated with the ROs that transmit adjacent preambles is different.

[0025] In conjunction with the second aspect, in one possible implementation, the configuration information is further used to indicate: when the number of target first signals is greater than 1, the minimum interval of the indices of the target first signals, wherein the difference between any two indices of the target first signals is not less than the minimum interval; or, in the case of different numbers of target first signals, the index set to which the indices of the target first signals belong, the index set including one or more indices, or one or more combinations of indices.

[0026] In conjunction with the second aspect, in one possible implementation, the reference signal received power (RSRP) of the target first signal is greater than a first preset threshold.

[0027] In conjunction with the second aspect, in one possible implementation, the configuration information further indicates a second correspondence between the total number of preamble transmissions and the first preset threshold.

[0028] In conjunction with the second aspect, in one possible implementation, the configuration information further indicates a third correspondence between the total number of preamble transmissions and the second preset threshold.

[0029] In conjunction with the second aspect, in one possible implementation, the method further includes: sending system information, the system information including the configuration information.

[0030] Thirdly, this application provides a communication device, including a unit for implementing the method in the first aspect and any possible implementation thereof, or a unit for implementing the method in the second aspect and any possible implementation thereof.

[0031] Fourthly, this application provides a communication device, including a processor and a transceiver; the transceiver is used to receive or transmit signals; the processor is used to perform the method as described in the first aspect above and any possible implementation thereof, or to perform the method as described in the second aspect above and any possible implementation thereof.

[0032] In conjunction with the fourth aspect, in one possible implementation, the communication device further includes a memory for storing a computer program; the processor is specifically configured to invoke the computer program from the memory, causing the communication device to perform the method as described in the first aspect and any of its possible implementations, or to perform the method as described in the second aspect and any of its possible implementations.

[0033] Fifthly, this application provides a chip for receiving configuration information from a network device. The configuration information indicates a first correspondence between the total number of preamble transmissions and the preamble transmission method. The preamble transmission method indicates the number of target first signals and the number of preamble transmissions corresponding to each target first signal. The random access opportunity (RO) associated with each target first signal is used to transmit the preamble, and the target first signal is a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS). The chip is used to transmit the preamble to the network device based on the preamble transmission method determined by the configuration information.

[0034] Sixthly, this application provides a chip for sending configuration information to a terminal. The configuration information indicates a first correspondence between the total number of preamble transmissions and the preamble transmission method. The preamble transmission method indicates the number of target first signals and the number of preamble transmissions corresponding to each target first signal. The random access opportunity (RO) associated with each target first signal is used to transmit the preamble, and the target first signal is a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS). The chip receives preambles from the terminal, and the preamble transmission method used by the terminal is determined based on the configuration information.

[0035] In a seventh aspect, this application provides a module device, the module device including a communication module, a power module, a storage module, and a chip module, wherein: the power module is used to provide power to the module device; the storage module is used to store data and instructions; the communication module is used for internal communication within the module device, or for communication between the module device and external devices; the chip module is used to: receive configuration information from a network device, the configuration information indicating a first correspondence between the total number of preamble transmissions and the preamble transmission method; wherein the preamble transmission method indicates: the number of target first signals and the number of preamble transmissions corresponding to each target first signal; wherein the random access opportunity (RO) associated with the target first signal is used to transmit the preamble, and the target first signal is a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS); and transmit the preamble to the network device based on the preamble transmission method determined by the configuration information.

[0036] Eighthly, this application provides a module device, the module device including a communication module, a power module, a storage module, and a chip module, wherein: the power module is used to provide power to the module device; the storage module is used to store data and instructions; the communication module is used for internal communication within the module device, or for communication between the module device and external devices; the chip module is used to: send configuration information to a terminal, the configuration information indicating a first correspondence between the total number of preamble transmissions and the preamble transmission method; wherein the preamble transmission method indicates: the number of target first signals and the number of preamble transmissions corresponding to each target first signal; wherein the random access opportunity (RO) associated with the target first signal is used to transmit the preamble, and the target first signal is a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS); and receive a preamble from the terminal, the preamble transmission method adopted by the terminal being determined based on the configuration information.

[0037] Ninthly, this application provides a computer-readable storage medium storing computer-readable instructions that, when executed on a communication device, cause the communication device to perform the method as described in the first aspect and any possible implementation thereof, or to perform the method as described in the second aspect and any possible implementation thereof.

[0038] In a tenth aspect, this application provides a computer program or computer program product, including code or instructions, which, when executed on a computer, cause the computer to perform the method as described in the first aspect above and any possible implementation thereof, or to perform the method as described in the second aspect above and any possible implementation thereof.

[0039] The method described in this application enables the terminal to conveniently determine its own suitable preamble transmission method, thereby improving the terminal's random access mechanism and further enhancing uplink coverage. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of a network architecture provided in an embodiment of this application;

[0041] Figure 2 This is a schematic diagram of a random access process provided in an embodiment of this application;

[0042] Figure 3 This is a flowchart of a communication method provided in an embodiment of this application;

[0043] Figure 4 This is a flowchart of yet another communication method provided in the embodiments of this application;

[0044] Figure 5 This is a schematic diagram illustrating the relationship between the magnitudes of various second preset thresholds and various first preset thresholds provided in an embodiment of this application;

[0045] Figure 6 This is a schematic diagram of the RSRP of multiple first signals obtained by measurement according to an embodiment of this application;

[0046] Figure 7 This is a schematic diagram of the structure of a communication device according to an embodiment of this application;

[0047] Figure 8 This is a schematic diagram of the structure of another communication device according to an embodiment of this application;

[0048] Figure 9 This is a schematic diagram of the structure of a chip provided in an embodiment of this application;

[0049] Figure 10 This is a schematic diagram of the structure of a module device provided in an embodiment of this application. Detailed Implementation

[0050] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] The terminology used in the following embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” “the,” and “this” are intended to include the plural expressions as well, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this application refers to and includes any or all possible combinations of one or more of the listed items.

[0052] It should be noted that the terms "first," "second," "third," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the term "comprising" and any variations thereof are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or server that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0053] The embodiments of this application can be applied to Figure 1 The network architecture shown is Figure 1 The network architecture shown is the network architecture of a wireless communication system. This network architecture typically includes terminals and network devices. The number and form of each device do not constitute a limitation on the embodiments of this application. Figure 1 The diagram illustrates a network device and a terminal. The network device can provide communication services to the terminal.

[0054] It should be noted that the wireless communication systems mentioned in the embodiments of this application include, but are not limited to: Internet of Things (IoT) systems, Long Term Evolution (LTE) systems, 5th-generation (5G) systems, 6th-generation (6G) systems, and future mobile communication systems.

[0055] The terminal in this application embodiment is a device with wireless communication capabilities, which may be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal device, vehicle-mounted terminal device, industrial control terminal device, UE unit, UE station, mobile station, remote station, remote terminal device, mobile device, UE terminal device, wireless communication device, UE agent, or UE device, etc. It should be noted that the term "terminal" is used as an example in the following description; the terminal may also be referred to as user equipment, terminal device, UE, etc., and these terms can all be understood as referring to the terminal in this application embodiment. This application does not limit the name of the terminal.

[0056] The terminal can be fixed or mobile. It should be noted that the terminal can support at least one wireless communication technology, such as LTE, New Radio (NR), etc. For example, a terminal can be a mobile phone, tablet, desktop computer, laptop computer, all-in-one computer, in-vehicle terminal, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, wearable device, terminal in future mobile communication networks, or terminal in future evolved public land mobile network (PLMN), etc. In some embodiments of this application, the terminal may also be a device with transceiver functions, such as a chip system. The chip system may include chips, but may also include other discrete devices; this application does not limit this.

[0057] In this application embodiment, the network device is a device that provides wireless communication functions for a terminal, and may also be referred to as a radio access network (RAN) device or access network element. The network device can support at least one wireless communication technology, such as LTE, NR, etc. For example, the network device includes, but is not limited to: next-generation base station (gNB), evolved node B (eNB), radio network controller (RNC), node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved node B, or home node B (HNB)), baseband unit (BBU), transmitting and receiving point (TRP), transmitting point (TP), mobile switching center, etc., in a 5th-generation mobile communication system (5G). Network devices can also be wireless controllers, centralized units (CUs), and / or distributed units (DUs) in cloud radio access networks (CRAN) scenarios, or they can be relay stations, access points, vehicle-mounted devices, terminal devices, wearable devices, and network devices in future mobile communications or future evolved PLMNs. In some embodiments, network devices can also be devices that provide wireless communication capabilities for terminals, such as chip systems. For example, a chip system may include chips, and may also include other discrete components. In some embodiments, network devices can also communicate with Internet Protocol (IP) networks, such as the Internet, private IP networks, or other data networks.

[0058] The network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0059] Next, some concepts involved in the embodiments of this application will be introduced.

[0060] Random access (RA)

[0061] See Figure 2 This is a schematic diagram of a random access process provided in an embodiment of this application. The terminal (exemplarily, UE) first completes downlink synchronization by reading System Information Block 1 (SIB1). The random access preamble is randomly selected by the terminal within the preamble range broadcast by SIB1. The terminal sends Random Access Message 1 (Msg1), also known as a Random Access Request, to the network device to indicate its intention to access the network device. Msg1 contains the random access preamble. If the network device correctly receives Msg1, it will send Random Access Message 2 (Msg2) to the UE, scrambled with the Random Access Radio Network Temporary Identifier (RA-RNTI), also known as a Random Access Response. After sending Msg1, the UE can use RA-RNTI to monitor Msg2 from the network device to descramble the message. Msg2 may contain a timing offset (TA), a temporary cell radio network temporary identifier (TC-RNTI), a power correction, and a resource indication for the UE to send random access message 3 (Mgs3). The UE then sends Mgs3 to the network device based on the resource indication for sending Mgs3. Finally, if the network device correctly receives Msg3, it sends random access message 4 (Msg4), also known as a contention resolution message, to the UE to indicate the completion of the initial access procedure. Otherwise, the UE can determine that the initial access procedure has failed.

[0062] Generally, the UE sends Msg1 to the network device through a random access opportunity (RO) associated with a synchronization signal and PBCH block (SSB) or a channel-state information-reference signal (CSI-RS). For example, taking the SSB as an example, the UE can obtain the relevant configuration of the RO through the SIB message, including the RO period size, the number of ROs in the time domain within a physical random access channel (PRACH) period, the number of ROs multiplexed in the frequency domain (indicated by the parameter msg1-FDM), and the number of SSBs associated with each RO (indicated by the parameter ssb-perRACH-Occasion). In the current protocol, one SSB can correspond to one or more RO resources, and one RO resource can correspond to one or more SSBs. The mapping rule between SSBs and RO resources is: the SSB is first mapped to the frequency-domain multiplexed RO resource, and then mapped to the time-domain multiplexed RO resource. For network devices, it is necessary to continuously detect the Msg1 sent by the UE on the configured RO resources to ensure that the UE's Msg1 is received in a timely manner.

[0063] Based on the above description, the solutions of the embodiments of this application will be further described below. See also Figure 3 This is a flowchart illustrating a communication method provided in an embodiment of this application. This method can be applied to... Figure 1 In the network architecture shown, the network device can be Figure 1 The network device in the middle, the terminal can be Figure 1 The terminal in the process. The method includes the following steps:

[0064] S101. The network device sends configuration information to the terminal, which is used to indicate the first correspondence between the total number of preamble transmissions and the preamble transmission method.

[0065] Optionally, the configuration information can be included in the system information sent by the network device. For example, the system information can be a System Information Block (SIB).

[0066] The preamble transmission method indicates the number of target first signals and the number of preamble transmissions corresponding to each target first signal. The random access opportunity (RO) associated with the target first signal is used to transmit the preamble (or can be understood as transmitting Msg1). The target first signal is either a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS). Specifically, the target first signal is the first signal transmitted by the network device to the terminal, and this first signal is either an SSB or a CSI-RS.

[0067] Optionally, the number of target first signals and the number of preamble transmissions corresponding to each target first signal can take several different values. In the first example, if the number of target first signals is 2 and the number of preamble transmissions corresponding to each target first signal is 2, then the preamble transmission method is: the terminal transmits the preamble on the ROs associated with 2 different target first signals, and transmits the preamble twice on each RO associated with the target first signal. In the second example, if the number of target first signals is 1 and the number of preamble transmissions corresponding to each target first signal is 3, then the preamble transmission method is: the terminal transmits the preamble on the RO associated with 1 target first signal, and transmits the preamble three times on the RO associated with that target first signal. In the third example, if the number of target first signals is 2, the number of preamble transmissions for the first target first signal is 1, and the number of preamble transmissions for the second target first signal is 3, then the preamble transmission method is as follows: the terminal transmits the preamble on the RO associated with the two different target first signals, and transmits the preamble once on the RO associated with the first target first signal, and transmits the preamble three times on the RO associated with the second target first signal.

[0068] Optionally, the sum of the number of preamble transmissions corresponding to each target first signal is the total number of preamble transmissions. Corresponding to the examples above, in the first example, the total number of preamble transmissions is 4; in the second example, it is 3; and in the third example, it is 4. It can be seen that, even with the same total number of preamble transmissions, different preamble transmission methods can be indicated in the configuration information.

[0069] In one possible implementation, the total number of preamble transmissions is N, where N is a positive integer. The first correspondence includes one or more of the following: the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is N; or, the number of target first signals is K, where K is a positive integer greater than 1, and the number of preamble transmissions corresponding to each target first signal includes one or more of the following: N / 2, N / 3, ..., N / K. That is to say, the number of preamble transmissions corresponding to each target first signal can be different, and the preamble transmission method includes the number of preamble transmissions corresponding to each target first signal. It should be noted that the number of preamble transmissions here should be a positive integer; that is, if the number of preamble transmissions is N / 2, then N should be a multiple of 2; if the number of preamble transmissions is N / K, then N should be a multiple of K. For example, if the total number of preamble transmissions is 8, then the preamble transmission method can be: the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is 8; or, the number of target first signals is 2, the number of preamble transmissions corresponding to the first target first signal is 6, and the number of preamble transmissions corresponding to the second target first signal is 2; or, the number of target first signals is 4, the number of preamble transmissions corresponding to the first target first signal is 4, the number of preamble transmissions corresponding to the second target first signal is 2, the number of preamble transmissions corresponding to the third target first signal is 1, and the number of preamble transmissions corresponding to the fourth target first signal is 1.

[0070] Optionally, the number of preamble transmissions corresponding to each target first signal includes one or more of the following: 1, 2, ..., N, and the sum of the number of preamble transmissions corresponding to each target first signal is the total number of preamble transmissions. For example, if the total number of preamble transmissions is 5, then the preamble transmission method can be: the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is 5; or, the number of target first signals is 2, the number of preamble transmissions corresponding to the first target first signal is 3, and the number of preamble transmissions corresponding to the second target first signal is 2; or, the number of target first signals is 3, the number of preamble transmissions corresponding to the first target first signal is 3, the number of preamble transmissions corresponding to the second target first signal is 1, and the number of preamble transmissions corresponding to the third target first signal is 1.

[0071] In one possible implementation, the total number of preamble transmissions is N, where N is a positive integer. The first correspondence includes one or more of the following: the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is N; or, the number of target first signals is 2, and the number of preamble transmissions corresponding to each target first signal is N / 2; or, the number of target first signals is 4, and the number of preamble transmissions corresponding to each target first signal is N / 4. It should be noted that the number of preamble transmissions here should be a positive integer. That is, if the number of preamble transmissions is N / 2, then N should be a multiple of 2; if the number of preamble transmissions is N / 4, then N should be a multiple of 4.

[0072] The following describes some specific first correspondences. Optionally, the first correspondence includes one or more of the following: The total number of preamble transmissions is 2: the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is 2; or, the number of target first signals is 2, and the number of preamble transmissions corresponding to each target first signal is 1. Alternatively, the total number of preamble transmissions is 4: the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is 4; or, the number of target first signals is 2, and the number of preamble transmissions corresponding to each target first signal is 2. Alternatively, the total number of preamble transmissions is 8: the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is 8; or, the number of target first signals is 2, and the number of preamble transmissions corresponding to each target first signal is 4; or, the number of target first signals is 4, and the number of preamble transmissions corresponding to each target first signal is 2.

[0073] As can be seen from the above introduction, when the total number of preamble transmissions is the same, the configuration information can indicate different preamble transmission methods. In one possible implementation, the configuration information is also used to indicate the priority information of each preamble transmission method when the total number of preamble transmissions is the same. Optionally, when the total number of preamble transmissions is the same, the more target first signals there are, the higher the priority of the preamble transmission method. For example, based on the preamble transmission methods listed above, when the total number of preamble transmissions is 8, the order of the preamble transmission methods from high to low priority is as follows: (1) The number of target first signals is 4, and the number of preamble transmissions corresponding to each target first signal is 2; (2) The number of target first signals is 2, and the number of preamble transmissions corresponding to each target first signal is 4; (3) The number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is 8. It should be noted that other priority sorting methods may also exist, which are not listed one by one in the embodiments of this application.

[0074] Optionally, the configuration information can further specify the order in which the ROs (Representation Entities) transmit the preamble. In one possible implementation, the configuration information is also used to instruct that the preamble be transmitted on the ROs associated with the first target signal in ascending order of their indexes. For example, if the first target signal is SSB1 and SSB2 (where 1 and 2 are the indices corresponding to SSBs), then the preamble should first be transmitted on the RO associated with SSB1, and then on the RO associated with SSB2.

[0075] Furthermore, if the number of preamble transmissions corresponding to each target first signal is greater than 1, then two possible ascending order transmission methods exist. In the first transmission method, the preamble is continuously transmitted on the RO associated with the target first signal at the same index. In the second transmission method, the preamble is periodically transmitted on the RO associated with the target first signal in ascending order of the target first signal's index, with the index of the target first signal associated with the RO being different for two consecutive transmissions of the preamble.

[0076] The following example illustrates these two transmission methods. For instance, if the target first signal is SSB3 and SSB5, and the preamble for each target first signal is transmitted twice. In the first transmission method, the terminal transmits the preamble twice consecutively on the RO associated with SSB3, and then twice consecutively on the RO associated with SSB5. That is, the order of the SSBs associated with the ROs transmitting the preambles is: SSB3, SSB3, SSB5, SSB5. In the second transmission method, the terminal transmits the preamble sequentially on the ROs associated with SSB3 and SSB5. The indices of the SSBs associated with the ROs transmitting adjacent preambles are different; that is, the order of the SSBs associated with the ROs transmitting the preambles is: SSB3, SSB5, SSB3, SSB5.

[0077] In one possible implementation, the configuration information can further limit the index of the target first signal associated with the RO that sends the preamble. It can be understood that the configuration information is also used to indicate the index selection rules of the target first signal.

[0078] In the first possible implementation, the configuration information is further used to indicate the minimum interval between the indices of the target first signal when the number of the target first signal is greater than 1, wherein the difference between any pairwise indices of the target first signal is not less than (i.e., greater than or equal to) the minimum interval. For example, if the number of target first signals is 4, the minimum interval is 4, and the index of the first target first signal is 0, then the index of the second target first signal is at least 4, the index of the third target first signal is at least 8, and the index of the fourth target first signal is at least 12. It should be noted that the number of target first signals can also be other values, such as 2, 8, etc.; the minimum interval can also be other values, such as 2, 3, etc.

[0079] In the second possible implementation, the configuration information is also used to indicate: given different numbers of target first signals, the index set to which the index of the target first signal belongs, the index set including one or more indices, or one or more combinations of indices. This index set can be understood as a preset set of indices that can be selected for the target first signal.

[0080] Optionally, the index set includes one or more indices. For example, when the number of target first signals is 1, the index set of the target first signals is {SSB0, SSB1}. That is, if the determined number of target first signals is 1, then one SSB can be selected from {SSB0, SSB1} as the target first signal associated with the RO transmitting the preamble. In another example, when the number of target first signals is 2, the index set of the target first signals is {SSB0, SSB1, SSB8, SSB9}. That is, if the determined number of target first signals is 2, then two SSBs can be selected from {SSB0, SSB1, SSB8, SSB9} as the target first signal associated with the RO transmitting the preamble.

[0081] Optionally, the index set includes one or more index combinations. For example, when the number of target first signals is 2, the index set of the target first signals is {(SSB0, SSB1), (SSB1, SSB9), (SSB2, SSB10), (SSB3, SSB11)}, where the index set indicates 4 different optional index combinations, with each index combination being an option. That is, if the determined number of target first signals is 2, then the target first signal associated with the RO that transmits the preamble can be selected from these 4 different optional index combinations indicated by the index set. For example, when the number of target first signals is 4, the index set of the target first signals is {(SSB0, SSB1, SSB8, SSB9), (SSB2, SSB3, SSB10, SSB11)}, where the index set indicates 2 different optional index combinations. In other words, if the number of target first signals is determined to be 4, then the target first signal associated with the RO that sends the preamble can be selected from the two different optional index combinations indicated by the index set.

[0082] S102. After receiving the configuration information from the network device, the terminal sends a preamble to the network device based on the preamble transmission method determined by the configuration information.

[0083] Optionally, the terminal can determine the preamble transmission method based on the total number of preamble transmissions it needs to send, the number of optional first signals that can be used to send the preamble, and this configuration information. Specifically, the total number of preamble transmissions in the preamble transmission method determined by the terminal is equal to the total number of preamble transmissions the terminal needs to send, and the number of target first signals in the determined preamble transmission method is less than or equal to the number of optional first signals. The optional first signals are the first signals sent by the network device to the terminal, and the optional first signals meet pre-set selection rules.

[0084] For example, if the terminal needs to send a preamble a total of 8 times and the number of selectable first signals is 3, and the first correspondence indicated in the configuration information includes "the total number of preamble transmissions is 8: the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is 8; or, the number of target first signals is 2, and the number of preamble transmissions corresponding to each target first signal is 4; or, the number of target first signals is 4, and the number of preamble transmissions corresponding to each target first signal is 2," then the terminal can choose between "the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is 8" (the target first signal can be any one of the selectable first signals) and "the number of target first signals is 2, and the number of preamble transmissions corresponding to each target first signal is 4" (the target first signal can be any two of the selectable first signals). The terminal can choose one of the preamble transmission methods to send the preamble. Furthermore, if the number of target first signals is greater, the priority of the preamble transmission method is higher. Then, the preamble transmission method determined by the terminal is "the number of target first signals is 2, and the number of preamble transmissions corresponding to each target first signal is 4".

[0085] exist Figure 3 In the example, the network device can send configuration information to the terminal to inform it of the initial correspondence between the total number of preamble transmissions and the preamble transmission method. The terminal can then select a suitable preamble transmission method based on its required total number of preamble transmissions and this configuration information. This method allows the terminal to easily determine its optimal preamble transmission method, thereby improving the terminal's random access mechanism and further enhancing uplink coverage.

[0086] The above describes how to determine the preamble transmission method. Next, we will further introduce the preliminary process for determining the preamble transmission method, mainly including how to determine the total number of preamble transmissions required by the terminal and the optional first signal, etc.

[0087] See Figure 4 This is a flowchart of another communication method provided in an embodiment of this application. This method can be applied to... Figure 1 In the network architecture shown, the network device can be Figure 1 The network device in the middle, the terminal can be Figure 1 The terminal in the middle.

[0088] The method includes the following steps:

[0089] S201, The network device sends the first signal to the terminal.

[0090] The first signal is either SSB or CSI-RS.

[0091] S202. The network device sends configuration information to the terminal.

[0092] It should be noted that there is no defined order between step S201 and step S202.

[0093] Among them, the configuration information is used to indicate the first correspondence between the total number of preamble transmissions and the preamble transmission mode. This mode can refer to the introduction in step S101 above and will not be elaborated here.

[0094] Optionally, the configuration information further indicates the third correspondence between the total number of preamble transmissions and the second preset threshold. Among them, the second preset threshold is used to indicate the range where the maximum value of the reference signal received power (RSRP) of the first signal received by the terminal is located. It can be understood that the second preset threshold is used to indicate the range of the signal strength (or signal quality) of the RSRP of the first signal received by the terminal. Specifically, the second preset threshold determined by the terminal is determined based on the maximum value in the RSRP of the first signal received, and the determined second preset threshold is the second preset threshold that is closest to and less than the RSRP maximum value. This third correspondence enables the terminal to determine the corresponding second preset threshold based on the RSRP of the first signal, and then determine the total number of preamble transmissions required by itself based on the determined second preset threshold. That is to say, the total number of preamble transmissions is determined based on this third correspondence between the total number of preamble transmissions and the second preset threshold.

[0095] In a possible implementation, the larger the second preset threshold, the fewer the corresponding preamble transmission times. Since the larger the second preset threshold, the better the signal quality of the first signal. Correspondingly, the preamble transmitted by the terminal on the RO associated with the first signal is more likely to be detected by the network device. Then, the corresponding number of preamble transmissions needs to be fewer. Exemplarily, if the preamble transmission times are N1, N2, N3, and if N1 < N2 < N3, then the second preset threshold corresponding to N1 > the second preset threshold corresponding to N2 > the second preset threshold corresponding to N3.

[0096] Optionally, the configuration information further indicates a second correspondence between the total number of preamble transmissions and a first preset threshold. The first preset threshold is used to constrain the RSRP of the target first signal. Specifically, the RSRP of the target first signal is greater than the first preset threshold. The second correspondence enables the terminal to determine the first preset threshold based on the total number of preamble transmissions. Then, the terminal determines which first signals can be used as optional first signals based on the first preset threshold and the RSRP of the first signal. The RSRP of the optional first signals is greater than the first preset threshold. The target first signal can be selected from the optional first signals.

[0097] In a possible implementation manner, since the larger the second preset threshold is, the fewer the corresponding preamble transmission times are. Then, the fewer the total number of preamble transmissions is, the larger the corresponding first preset threshold is.

[0098] Optionally, when the number of preamble transmissions is the same, the first preset threshold corresponding to the number of preamble transmissions is greater than the second preset threshold corresponding to the number of preamble transmissions. Exemplarily, refer to Figure 5 , which is a schematic diagram of the magnitude relationship between each second preset threshold and each first preset threshold provided by an embodiment of the present application. Among them, the indicated number of preamble transmissions is N1, N2, N3, and N1 < N2 < N3; the second preset threshold corresponding to N1 is RSRP-N1, the second preset threshold corresponding to N2 is RSRP-N2, and the second preset threshold corresponding to N3 is RSRP-N3; the first preset threshold corresponding to N1 is Th-N1, the first preset threshold corresponding to N2 is Th-N2, and the first preset threshold corresponding to N3 is Th-N3. RSRP-Msg3 is the configured threshold (or preset value) for whether to perform random access MSG3 repetition. When it is lower than this threshold, the terminal needs to perform Msg3 repeated transmission.

[0099] In a possible implementation manner, the first preset threshold includes at least two thresholds. The at least two thresholds are used to constrain the RSRP of different target first signals. Exemplarily, if the first preset threshold includes three thresholds, which are exemplified as a, b, c; then it means that there are at least three target first signals. The RSRP of the first target first signal is greater than a, the RSRP of the second target first signal is greater than b, and the RSRP of the third target first signal is greater than c.

[0100] S203. After the terminal receives the first signal from the network device, the terminal determines the RSRP of the first signal.

[0101] Among them, the number of the first signals can be one or more, and the terminal measures the RSRP of each first signal.

[0102] S204. After the terminal receives the configuration information from the network device, the terminal determines the total number of preamble transmissions based on the maximum value of the RSRP of the first signal and the third correspondence relationship.

[0103] Optionally, the terminal may select the maximum value of the RSRP of each measured first signal and compare it with each second preset threshold in the third correspondence relationship, and select the total number of preamble transmissions corresponding to the second preset threshold that is closest and less than the maximum value as the total number of preamble transmissions required by the terminal.

[0104] Exemplarily, refer to Figure 6 , which is a schematic diagram of the RSRP of multiple first signals measured in an embodiment of the present application. Among them, the indicated preamble transmission times are N1, N2, and N3, where N1 < N2 < N3; the second preset threshold corresponding to N1 is RSRP-N1, the second preset threshold corresponding to N2 is RSRP-N2, and the second preset threshold corresponding to N3 is RSRP-N3. The first signal includes SSB0, SSB1, SSB2, and SSB3. The terminal measures the RSRP of SSB0, SSB1, SSB2, and SSB3. Among them, the maximum value of the RSRP of each first signal is the RSRP of SSB1. Then, the terminal compares the RSRP of SSB1 with RSRP-N1, RSRP-N2, and RSRP-N3. The second preset threshold in the third correspondence relationship that is closest and less than the RSRP of SSB1 is RSRP-N2. Then, it is determined that the total number of preamble transmissions N2 corresponding to RSRP-N2 is the total number of preamble transmissions required by the terminal.

[0105] S205. The terminal determines the first preset threshold based on the total number of preamble transmissions and the second correspondence relationship.

[0106] Taking the above example, if the total number of preamble transmissions determined by the terminal is N2, then the first preset threshold is the first preset threshold Th-N2 corresponding to N2.

[0107] S206. The terminal determines the optional first signal based on the first preset threshold and the RSRP of the first signal.

[0108] Exemplarily, the terminal compares the first preset threshold Th-N2 with the RSRP of each measured first signal to determine the optional first signal. The RSRP of the optional first signal is greater than the first preset threshold. In particular, if the first preset threshold includes at least two thresholds, then the RSRP of the optional first signal respectively meets the requirements of each of the at least two thresholds.

[0109] S207. The terminal determines the preamble transmission method based on the total number of preamble transmissions, the number of selectable first signals, and the first correspondence, and determines the target first signal based on the determined preamble transmission method and the selectable first signals.

[0110] In this step, the terminal first determines the available preamble transmission methods based on the total number of preamble transmissions and the first correspondence, wherein the total number of preamble transmissions in the available preamble transmission methods is equal to the total number of preamble transmissions required by the terminal. Then, the terminal determines the preamble transmission method from the available preamble transmission methods based on the number of selectable first signals, wherein the number of target first signals in the determined preamble transmission method is less than or equal to the number of selectable first signals. It should be noted that if more than one preamble transmission method is determined at this stage, the terminal can choose any transmission method or select the preamble transmission method with the highest priority based on priority (priority information can be indicated in the configuration information). A specific example can be found in step S102.

[0111] Furthermore, the target first signal is selected from the optional first signals, and the number of selected target first signals is the same as the number of target first signals in the determined preamble transmission method. For example, if the optional first signals are SSB1, SSB2, and SSB3, and the number of target first signals in the determined preamble transmission method is 2, then the target first signals are SSB1 and SSB3, or SSB1 and SSB2, or SSB2 and SSB3.

[0112] In one implementation, the configuration information is further used to indicate the index selection rule for the target first signal. The index selection rule for the target first signal can be illustrated as follows: when the number of target first signals is greater than 1, the minimum interval between the indices of the target first signal, wherein the difference between any pairwise indices of the target first signal is not less than the minimum interval; or, in the case of different numbers of target first signals, the index set to which the index of the target first signal belongs, the index set including one or more indices, or one or more combinations of indices. Optionally, in this implementation, the target first signal is selected from the optional first signals, and the index of the target first signal satisfies the index selection rule for the target first signal. A detailed description of the index selection rule for the target first signal can also refer to the content described in step S101 above, and will not be repeated here. Alternatively, other methods of selecting the target first signal may exist; this application embodiment does not limit the method of selecting the target first signal from the optional first signals.

[0113] S208. The terminal sends a preamble to the network device through the RO associated with the target first signal based on the determined preamble transmission method.

[0114] For example, if the terminal determines the preamble transmission method as "the number of the first target signal is 2, and the number of preamble transmissions corresponding to each first target signal is 2", and the determined first target signal is "SSB2 and SSB3", then the terminal will send the preamble twice on the RO associated with SSB2 and twice on the RO associated with SSB3.

[0115] Optionally, if the configuration information is also used to indicate that the preamble is sent on the RO associated with the first target signal in ascending order of the index of the first target signal, then the terminal needs to send the preamble in this order. For example, the specific sending order can be referred to the content described in step S101 above, and will not be repeated here.

[0116] Optionally, in one embodiment, if the total number of preamble transmissions determined by the terminal is greater than or equal to a third preset threshold, the terminal also repeatedly sends the random access message 3 (Msg3) to the network device. For example, the second preset threshold can be a value such as 2, 3, 4, 5, etc. This is because if the total number of preamble transmissions is greater than or equal to the third preset threshold, it indicates that the RSRP of the first signal received by the terminal is poor. In this case, repeatedly sending Msg3 is necessary. For example, in practical applications, when the determined total number of preamble transmissions is greater than or equal to the second preset threshold, ignoring other characteristics related to physical random access channel (PRACH) resources, the terminal defaults to repeatedly sending Msg3 to the network device.

[0117] It is understood that, in order to achieve the functions in the above embodiments, the terminal / network device includes hardware structures and / or software modules corresponding to perform each function. Those skilled in the art should readily recognize that, based on the units and method steps of the various examples described in conjunction with the embodiments disclosed in this application, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.

[0118] See Figure 7 , Figure 7 A schematic diagram of the structure of a communication device according to an embodiment of this application is shown. Figure 7 The communication device 70 shown may include a receiving unit 701 and a transmitting unit 702.

[0119] In one possible embodiment:

[0120] The communication device can be a terminal, a device within a terminal, or a device that can be used in conjunction with a terminal.

[0121] in:

[0122] The receiving unit 701 is configured to receive configuration information from the network device, wherein the configuration information is used to indicate a first correspondence between the total number of preamble transmissions and the preamble transmission method; wherein the preamble transmission method is used to indicate: the number of target first signals and the number of preamble transmissions corresponding to each target first signal; wherein the random access opportunity (RO) associated with the target first signal is used to transmit the preamble, and the target first signal is a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS).

[0123] The sending unit 702 is used to send a preamble to the network device based on the preamble transmission method determined by the configuration information. The operations performed by the sending unit 702 can be referred to the above description. Figure 3 The description of step S102 in the corresponding embodiment, or refer to the above Figure 4 The following is a description of step S208 in the corresponding embodiment.

[0124] In one possible implementation, the sum of the number of times the preamble is transmitted for each of the target first signals is the total number of times the preamble is transmitted.

[0125] In one possible implementation, the total number of preamble transmissions is N, where N is a positive integer, and the first correspondence includes one or more of the following: the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is N; or, the number of target first signals is K, where K is a positive integer greater than 1, and the number of preamble transmissions corresponding to each target first signal includes one or more of the following: 1, 2, ..., N, and the sum of the number of preamble transmissions corresponding to each target first signal is the total number of preamble transmissions.

[0126] In one possible implementation, the first correspondence includes one or more of the following: the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is N; or, the number of target first signals is 2, and the number of preamble transmissions corresponding to each target first signal is N / 2; or, the number of target first signals is 4, and the number of preamble transmissions corresponding to each target first signal is N / 4.

[0127] In one possible implementation, the configuration information is also used to indicate the priority information of each preamble transmission method when the total number of preamble transmissions is the same.

[0128] In one possible implementation, the configuration information is further used to instruct the transmission of a preamble on the RO associated with the target first signal in ascending order of the index of the target first signal.

[0129] In one possible implementation, preambles are continuously transmitted on ROs associated with the target first signal at the same index, or preambles are periodically transmitted on ROs associated with the target first signal in ascending order of the index of the target first signal, wherein the index of the target first signal associated with the ROs that transmit adjacent preambles is different.

[0130] In one possible implementation, the configuration information is further used to indicate: when the number of target first signals is greater than 1, the minimum interval of the indices of the target first signals, wherein the difference between any two indices of the target first signals is not less than the minimum interval; or, in the case of different numbers of target first signals, the index set to which the indices of the target first signals belong, the index set including one or more indices, or one or more combinations of indices.

[0131] In one possible implementation, the determined preamble transmission method is determined based on the total number of preamble transmissions and the number of optional first signals. The number of reference signals for the target first signal in the determined preamble transmission method is less than or equal to the number of optional first signals. The reference signal received power (RSRP) of the optional first signal is greater than a first preset threshold. The optional first signal belongs to the first signal, and the target first signal belongs to the optional first signal. The first signal is an SSB or CSI-RS received from the network device.

[0132] In one possible implementation, the first preset threshold is determined based on a second correspondence between the total number of preamble transmissions and the first preset threshold, and the configuration information further indicates the second correspondence.

[0133] In one possible implementation, the total number of preamble transmissions is determined based on a third correspondence between the total number of preamble transmissions and a second preset threshold; the second preset threshold is determined based on the maximum value in the RSRP of the received first signal; and the configuration information further indicates the third correspondence.

[0134] In one possible implementation, the receiving unit 701 is further configured to: receive system information from the network device, the system information including the configuration information.

[0135] In one possible implementation, the sending unit 702 is further configured to: repeatedly send the randomly accessed message 3Msg3 when the total number of preamble transmissions is greater than or equal to a third preset threshold.

[0136] It should be noted that, in this embodiment, the communication device can perform... Figure 3 or Figure 4 The relevant steps of the terminal in the method embodiment shown can be found in the implementation methods provided in the above steps, and will not be repeated here.

[0137] In another possible embodiment:

[0138] The communication device can be a network device, a device within a network device, or a device compatible with a network device. Specifically:

[0139] The sending unit 702 is configured to send configuration information to the terminal. The configuration information indicates a first correspondence between the total number of preamble transmissions and the preamble transmission method. The preamble transmission method indicates the number of target first signals and the number of preamble transmissions corresponding to each target first signal. The random access opportunity (RO) associated with each target first signal is used to transmit the preamble, and the target first signal is either a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS). The operations performed by the sending unit 702 can be referred to the above description. Figure 3 The description of step S101 in the corresponding embodiment can be found above. Figure 4 The following is a description of step S202 in the corresponding embodiment.

[0140] The receiving unit 701 is used to receive a preamble from the terminal, wherein the preamble transmission method adopted by the terminal is determined based on the configuration information.

[0141] In one possible implementation, the sum of the number of times the preamble is transmitted for each of the target first signals is the total number of times the preamble is transmitted.

[0142] In one possible implementation, the total number of preamble transmissions is N, where N is a positive integer, and the first correspondence includes one or more of the following: the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is N; or, the number of target first signals is K, where K is a positive integer greater than 1, and the number of preamble transmissions corresponding to each target first signal includes one or more of the following: 1, 2, ..., N, and the sum of the number of preamble transmissions corresponding to each target first signal is the total number of preamble transmissions.

[0143] In one possible implementation, the first correspondence includes one or more of the following: the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is N; or, the number of target first signals is 2, and the number of preamble transmissions corresponding to each target first signal is N / 2; or, the number of target first signals is 4, and the number of preamble transmissions corresponding to each target first signal is N / 4. In one possible implementation, the configuration information is further used to indicate the priority information of each preamble transmission method when the total number of preamble transmissions is the same.

[0144] In one possible implementation, the configuration information is further used to instruct the transmission of a preamble on the RO associated with the target first signal in ascending order of the index of the target first signal.

[0145] In one possible implementation, preambles are continuously transmitted on ROs associated with the target first signal at the same index, or preambles are periodically transmitted on ROs associated with the target first signal in ascending order of the index of the target first signal, wherein the index of the target first signal associated with the ROs that transmit adjacent preambles is different.

[0146] In one possible implementation, the configuration information is further used to indicate: when the number of target first signals is greater than 1, the minimum interval of the indices of the target first signals, wherein the difference between any two indices of the target first signals is not less than the minimum interval; or, in the case of different numbers of target first signals, the index set to which the indices of the target first signals belong, the index set including one or more indices, or one or more combinations of indices.

[0147] In one possible implementation, the reference signal received power (RSRP) of the target first signal is greater than a first preset threshold.

[0148] In one possible implementation, the configuration information further indicates a second correspondence between the total number of preamble transmissions and a first preset threshold.

[0149] In one possible implementation, the configuration information also indicates a third correspondence between the total number of preamble transmissions and the second preset threshold.

[0150] In one possible implementation, the sending unit 702 is further configured to: send system information, the system information including the configuration information.

[0151] It should be noted that, in this embodiment, the communication device can perform... Figure 3 or Figure 4The relevant steps of the network device in the method embodiment shown can be found in the implementation methods provided in the above steps, and will not be repeated here.

[0152] like Figure 8 The diagram shows another communication device 80 provided in an embodiment of this application. In some embodiments, the communication device 80 is used to implement the above-described... Figure 3 , Figure 4 The device describes the functions of a network device. This device can be a network device or a means for using a network device. The means for using a network device can be a chip system or chip within the network device. In other embodiments, the communication device 80 is used to implement the above. Figure 3 , Figure 4 The device refers to the functionality of a terminal. This device can be a terminal itself or a device used for a terminal. The device used for a terminal can be a chip system or a chip within the terminal. The chip system can consist of chips or may include chips and other discrete components.

[0153] The communication device 80 includes at least one processor 820 for implementing the data processing function in the method provided in the embodiments of this application. The communication device 80 may also include a communication interface 810 for implementing the send and receive operations in the method provided in the embodiments of this application. In the embodiments of this application, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface for communicating with other devices via a transmission medium. For example, the communication interface 810 enables the device in the communication device 80 to communicate with other devices. The processor 820 uses the communication interface 810 to send and receive data and is used to implement the above-described method embodiments. Figure 3 , Figure 4 The method described.

[0154] The communication device 80 may further include at least one memory 830 for storing program instructions and / or data. The memory 830 is coupled to the processor 820. The coupling in this embodiment is an indirect coupling or communication connection between devices, units, or modules, and may be electrical, mechanical, or other forms, used for information exchange between devices, units, or modules. The processor 820 may operate in conjunction with the memory 830. The processor 820 may execute program instructions stored in the memory 830. At least one of the at least one memories may be included in the processor.

[0155] When the communication device 80 is powered on, the processor 820 can read the software program in the memory 830, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be transmitted wirelessly, the processor 820 performs baseband processing on the data to be transmitted and outputs the baseband signal to the radio frequency circuit (not shown in the figure). The radio frequency circuit processes the baseband signal and transmits the radio frequency signal outward in the form of electromagnetic waves through the antenna. When data is sent to the communication device 80, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 820. The processor 820 converts the baseband signal into data and processes the data.

[0156] In another implementation, the radio frequency circuitry and antenna can be set up independently of the processor 820 that performs baseband processing. For example, in a distributed scenario, the radio frequency circuitry and antenna can be arranged in a remote manner, independent of the communication device.

[0157] This application embodiment does not limit the specific connection medium between the communication interface 810, processor 820, and memory 830. This application embodiment... Figure 8 The memory 830, processor 820, and communication interface 810 are connected via a bus 840. Figure 8 The connections between other components are shown in bold and are for illustrative purposes only, not as limiting information. The bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, Figure 8 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0158] When the communication device 80 is specifically used in a terminal / network device, for example, when the communication device 80 is specifically a chip or chip system, the communication interface 810 may output or receive baseband signals. When the communication device 80 is specifically a terminal / network device, the communication interface 810 may output or receive radio frequency signals. In the embodiments of this application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, which can implement or execute the various methods, operations, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The operation of the method disclosed in the embodiments of this application can be directly manifested as execution by a hardware processor, or execution by a combination of hardware and software modules in the processor.

[0159] It should be noted that the communication device can execute the relevant steps of the terminal / network device in the aforementioned method embodiments. For details, please refer to the implementation methods provided in the above steps, which will not be repeated here.

[0160] For various devices and products applied to or integrated into communication devices, each of its modules can be implemented using hardware such as circuits. Different modules can be located in the same component (e.g., chip, circuit module, etc.) or different components within the terminal. Alternatively, at least some modules can be implemented using software programs that run on a processor integrated within the terminal, while the remaining (if any) modules can be implemented using hardware such as circuits.

[0161] For cases where the communication device can be a chip or a chip system, please refer to [link / reference]. Figure 9 The diagram shows the structure of the chip. The chip 90 includes a processor 901 and a communication interface 902. The number of processors 901 can be one or more, and the number of communication interfaces 902 can be multiple.

[0162] In one embodiment, the processor 901 is configured to perform the following operations:

[0163] The system receives configuration information from a network device, which indicates a first correspondence between the total number of preamble transmissions and the preamble transmission method. The preamble transmission method indicates the number of target first signals and the number of preamble transmissions corresponding to each target first signal. The random access opportunity (RO) associated with each target first signal is used to transmit the preamble, and the target first signal is either a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS). Based on the preamble transmission method determined by the configuration information, the system transmits the preamble to the network device.

[0164] In one possible implementation, the sum of the number of times the preamble is transmitted for each of the target first signals is the total number of times the preamble is transmitted.

[0165] In one possible implementation, the total number of preamble transmissions is N, where N is a positive integer, and the first correspondence includes one or more of the following: the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is N; or, the number of target first signals is K, where K is a positive integer greater than 1, and the number of preamble transmissions corresponding to each target first signal includes one or more of the following: 1, 2, ..., N, and the sum of the number of preamble transmissions corresponding to each target first signal is the total number of preamble transmissions.

[0166] In one possible implementation, the first correspondence includes one or more of the following: the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is N; or, the number of target first signals is 2, and the number of preamble transmissions corresponding to each target first signal is N / 2; or, the number of target first signals is 4, and the number of preamble transmissions corresponding to each target first signal is N / 4.

[0167] In one possible implementation, the configuration information is also used to indicate the priority information of each preamble transmission method when the total number of preamble transmissions is the same.

[0168] In one possible implementation, the configuration information is further used to instruct the transmission of a preamble on the RO associated with the target first signal in ascending order of the index of the target first signal.

[0169] In one possible implementation, preambles are continuously transmitted on ROs associated with the target first signal at the same index, or preambles are periodically transmitted on ROs associated with the target first signal in ascending order of the index of the target first signal, wherein the index of the target first signal associated with the ROs that transmit adjacent preambles is different.

[0170] In one possible implementation, the configuration information is further used to indicate: when the number of target first signals is greater than 1, the minimum interval of the indices of the target first signals, wherein the difference between any two indices of the target first signals is not less than the minimum interval; or, in the case of different numbers of target first signals, the index set to which the indices of the target first signals belong, the index set including one or more indices, or one or more combinations of indices.

[0171] In one possible implementation, the determined preamble transmission method is determined based on the total number of preamble transmissions and the number of optional first signals. The number of reference signals for the target first signal in the determined preamble transmission method is less than or equal to the number of optional first signals. The reference signal received power (RSRP) of the optional first signal is greater than a first preset threshold. The optional first signal belongs to the first signal, and the target first signal belongs to the optional first signal. The first signal is an SSB or CSI-RS received from the network device.

[0172] In one possible implementation, the first preset threshold is determined based on a second correspondence between the total number of preamble transmissions and the first preset threshold, and the configuration information further indicates the second correspondence.

[0173] In one possible implementation, the total number of preamble transmissions is determined based on a third correspondence between the total number of preamble transmissions and a second preset threshold; the second preset threshold is determined based on the maximum value in the RSRP of the received first signal; and the configuration information further indicates the third correspondence.

[0174] In one possible implementation, the processor 901 is also configured to perform the following operation: receiving system information from a network device, the system information including the configuration information.

[0175] In one possible implementation, the processor 901 is also configured to perform the following operation: if the total number of preamble transmissions is greater than or equal to a third preset threshold, repeatedly transmit the randomly accessed message 3Msg3.

[0176] In yet another embodiment, the processor 901 is configured to perform the following operations:

[0177] The system sends configuration information to the terminal, which indicates a first correspondence between the total number of preamble transmissions and the preamble transmission method. The preamble transmission method indicates the number of target first signals and the number of preamble transmissions corresponding to each target first signal. The random access opportunity (RO) associated with each target first signal is used to transmit the preamble, and the target first signal is either a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS). The system receives preambles from the terminal, and the preamble transmission method used by the terminal is determined based on the configuration information.

[0178] In one possible implementation, the sum of the number of times the preamble is transmitted for each of the target first signals is the total number of times the preamble is transmitted.

[0179] In one possible implementation, the total number of preamble transmissions is N, where N is a positive integer, and the first correspondence includes one or more of the following: the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is N; or, the number of target first signals is K, where K is a positive integer greater than 1, and the number of preamble transmissions corresponding to each target first signal includes one or more of the following: 1, 2, ..., N, and the sum of the number of preamble transmissions corresponding to each target first signal is the total number of preamble transmissions.

[0180] In one possible implementation, the first correspondence includes one or more of the following: the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is N; or, the number of target first signals is 2, and the number of preamble transmissions corresponding to each target first signal is N / 2; or, the number of target first signals is 4, and the number of preamble transmissions corresponding to each target first signal is N / 4. In one possible implementation, the configuration information is further used to indicate the priority information of each preamble transmission method when the total number of preamble transmissions is the same.

[0181] In one possible implementation, the configuration information is further used to instruct the transmission of a preamble on the RO associated with the target first signal in ascending order of the index of the target first signal.

[0182] In one possible implementation, preambles are continuously transmitted on ROs associated with the target first signal at the same index, or preambles are periodically transmitted on ROs associated with the target first signal in ascending order of the index of the target first signal, wherein the index of the target first signal associated with the ROs that transmit adjacent preambles is different.

[0183] In one possible implementation, the configuration information is further used to indicate: when the number of target first signals is greater than 1, the minimum interval of the indices of the target first signals, wherein the difference between any two indices of the target first signals is not less than the minimum interval; or, in the case of different numbers of target first signals, the index set to which the indices of the target first signals belong, the index set including one or more indices, or one or more combinations of indices.

[0184] In one possible implementation, the reference signal received power (RSRP) of the target first signal is greater than a first preset threshold.

[0185] In one possible implementation, the configuration information further indicates a second correspondence between the total number of preamble transmissions and a first preset threshold.

[0186] In one possible implementation, the configuration information also indicates a third correspondence between the total number of preamble transmissions and the second preset threshold.

[0187] In one possible implementation, the processor 901 is also configured to perform the following operation: sending system information, the system information including the configuration information.

[0188] It should be noted that the chip or chip system can execute the relevant steps of the terminal / network device in the foregoing method embodiments. For details, please refer to the implementation methods provided in the above steps, which will not be repeated here.

[0189] like Figure 10 As shown, Figure 10 This is a schematic diagram of the structure of a module device provided in an embodiment of this application. The module device 100 includes: a communication module 1001, a power supply module 1002, a storage module 1003, and a chip module 1004.

[0190] The power module 1002 is used to provide power to the module device; the storage module 1003 is used to store data and instructions; and the communication module 1001 is used for internal communication within the module device or for communication between the module device and external devices.

[0191] In one embodiment, the chip module 1004 is used for:

[0192] The system receives configuration information from a network device, which indicates a first correspondence between the total number of preamble transmissions and the preamble transmission method. The preamble transmission method indicates the number of target first signals and the number of preamble transmissions corresponding to each target first signal. The random access opportunity (RO) associated with each target first signal is used to transmit the preamble, and the target first signal is either a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS). Based on the preamble transmission method determined by the configuration information, the system transmits the preamble to the network device.

[0193] In one possible implementation, the sum of the number of times the preamble is transmitted for each of the target first signals is the total number of times the preamble is transmitted.

[0194] In one possible implementation, the total number of preamble transmissions is N, where N is a positive integer, and the first correspondence includes one or more of the following: the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is N; or, the number of target first signals is K, where K is a positive integer greater than 1, and the number of preamble transmissions corresponding to each target first signal includes one or more of the following: 1, 2, ..., N, and the sum of the number of preamble transmissions corresponding to each target first signal is the total number of preamble transmissions.

[0195] In one possible implementation, the first correspondence includes one or more of the following: the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is N; or, the number of target first signals is 2, and the number of preamble transmissions corresponding to each target first signal is N / 2; or, the number of target first signals is 4, and the number of preamble transmissions corresponding to each target first signal is N / 4.

[0196] In one possible implementation, the configuration information is also used to indicate the priority information of each preamble transmission method when the total number of preamble transmissions is the same.

[0197] In one possible implementation, the configuration information is further used to instruct the transmission of a preamble on the RO associated with the target first signal in ascending order of the index of the target first signal.

[0198] In one possible implementation, preambles are continuously transmitted on ROs associated with the target first signal at the same index, or preambles are periodically transmitted on ROs associated with the target first signal in ascending order of the index of the target first signal, wherein the index of the target first signal associated with the ROs that transmit adjacent preambles is different.

[0199] In one possible implementation, the configuration information is further used to indicate: when the number of target first signals is greater than 1, the minimum interval of the indices of the target first signals, wherein the difference between any two indices of the target first signals is not less than the minimum interval; or, in the case of different numbers of target first signals, the index set to which the indices of the target first signals belong, the index set including one or more indices, or one or more combinations of indices.

[0200] In one possible implementation, the determined preamble transmission method is determined based on the total number of preamble transmissions and the number of optional first signals. The number of reference signals for the target first signal in the determined preamble transmission method is less than or equal to the number of optional first signals. The reference signal received power (RSRP) of the optional first signal is greater than a first preset threshold. The optional first signal belongs to the first signal, and the target first signal belongs to the optional first signal. The first signal is an SSB or CSI-RS received from the network device.

[0201] In one possible implementation, the first preset threshold is determined based on a second correspondence between the total number of preamble transmissions and the first preset threshold, and the configuration information further indicates the second correspondence.

[0202] In one possible implementation, the total number of preamble transmissions is determined based on a third correspondence between the total number of preamble transmissions and a second preset threshold; the second preset threshold is determined based on the maximum value in the RSRP of the received first signal; and the configuration information further indicates the third correspondence.

[0203] In one possible implementation, the chip module 1004 is further configured to: receive system information from a network device, the system information including the configuration information.

[0204] In one possible implementation, the chip module 1004 is further configured to: repeatedly send the randomly accessed message 3Msg3 when the total number of preamble transmissions is greater than or equal to a third preset threshold.

[0205] In yet another embodiment, the chip module 1004 is used for:

[0206] The system sends configuration information to the terminal, which indicates a first correspondence between the total number of preamble transmissions and the preamble transmission method. The preamble transmission method indicates the number of target first signals and the number of preamble transmissions corresponding to each target first signal. The random access opportunity (RO) associated with each target first signal is used to transmit the preamble, and the target first signal is either a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS). The system receives preambles from the terminal, and the preamble transmission method used by the terminal is determined based on the configuration information.

[0207] In one possible implementation, the sum of the number of times the preamble is transmitted for each of the target first signals is the total number of times the preamble is transmitted.

[0208] In one possible implementation, the total number of preamble transmissions is N, where N is a positive integer, and the first correspondence includes one or more of the following: the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is N; or, the number of target first signals is K, where K is a positive integer greater than 1, and the number of preamble transmissions corresponding to each target first signal includes one or more of the following: 1, 2, ..., N, and the sum of the number of preamble transmissions corresponding to each target first signal is the total number of preamble transmissions.

[0209] In one possible implementation, the first correspondence includes one or more of the following: the number of target first signals is 1, and the number of preamble transmissions corresponding to the target first signal is N; or, the number of target first signals is 2, and the number of preamble transmissions corresponding to each target first signal is N / 2; or, the number of target first signals is 4, and the number of preamble transmissions corresponding to each target first signal is N / 4. In one possible implementation, the configuration information is further used to indicate the priority information of each preamble transmission method when the total number of preamble transmissions is the same.

[0210] In one possible implementation, the configuration information is further used to instruct the transmission of a preamble on the RO associated with the target first signal in ascending order of the index of the target first signal.

[0211] In one possible implementation, preambles are continuously transmitted on ROs associated with the target first signal at the same index, or preambles are periodically transmitted on ROs associated with the target first signal in ascending order of the index of the target first signal, wherein the index of the target first signal associated with the ROs that transmit adjacent preambles is different.

[0212] In one possible implementation, the configuration information is further used to indicate: when the number of target first signals is greater than 1, the minimum interval of the indices of the target first signals, wherein the difference between any two indices of the target first signals is not less than the minimum interval; or, in the case of different numbers of target first signals, the index set to which the indices of the target first signals belong, the index set including one or more indices, or one or more combinations of indices.

[0213] In one possible implementation, the reference signal received power (RSRP) of the target first signal is greater than a first preset threshold.

[0214] In one possible implementation, the configuration information further indicates a second correspondence between the total number of preamble transmissions and a first preset threshold.

[0215] In one possible implementation, the configuration information also indicates a third correspondence between the total number of preamble transmissions and the second preset threshold.

[0216] In one possible implementation, the chip module 1004 is further configured to: send system information, the system information including the configuration information.

[0217] It should be noted that the module device 100 can execute the relevant steps of the terminal / network device in the aforementioned method embodiments. For details, please refer to the implementation methods provided in the above steps, which will not be repeated here.

[0218] This application also provides a computer-readable storage medium storing instructions that, when executed on a processor, enable the implementation of the method flow described in the above method embodiments.

[0219] This application also provides a computer program product, which, when run on a processor, enables the implementation of the method flow described in the above method embodiments.

[0220] Regarding the modules / units included in the various devices and products described in the above embodiments, they can be software modules / units, hardware modules / units, or a combination of both. For example, for various devices and products applied to or integrated into a chip, all of their modules / units can be implemented using hardware methods such as circuits, or at least some modules / units can be implemented using software programs that run on the chip's integrated processor, while the remaining (if any) modules / units can be implemented using hardware methods such as circuits. For various devices and products applied to or integrated into a chip module, all of their modules / units can be implemented using hardware methods such as circuits. Different modules / units can be located in the same part (e.g., chip, circuit module, etc.) or different components of the chip module, or at least some modules / units... It can be implemented using software programs that run on the processor integrated within the chip module. The remaining (if any) modules / units can be implemented using hardware methods such as circuits. For various devices and products applied to or integrated into the terminal, the modules / units they contain can all be implemented using hardware methods such as circuits. Different modules / units can be located in the same component (e.g., chip, circuit module, etc.) or different components within the terminal. Alternatively, at least some modules / units can be implemented using software programs that run on the processor integrated within the terminal, while the remaining (if any) modules / units can be implemented using hardware methods such as circuits.

[0221] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some operations can be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0222] The descriptions of the various embodiments provided in this application can be referenced mutually. Each embodiment has its own emphasis, and parts not described in detail in a certain embodiment can be referred to the relevant descriptions of other embodiments. For the sake of convenience and brevity, for example, the functions and operations of the various devices and equipment provided in the embodiments of this application can be referred to the relevant descriptions of the method embodiments of this application. The method embodiments and the device embodiments can also be referenced, combined or cited from each other.

[0223] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A communication method, characterized in that, The method includes: The system receives configuration information from a network device, which indicates a first correspondence between the total number of preamble transmissions and the preamble transmission method. The preamble transmission method indicates the number of target first signals and the number of preamble transmissions corresponding to each target first signal. The random access opportunity (RO) associated with each target first signal is used to transmit the preamble, and the target first signal is either a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS). Based on the preamble transmission method determined by the configuration information, the preamble is sent to the network device.

2. The method according to claim 1, characterized in that, The sum of the number of times the preamble is transmitted for each of the target first signals is the total number of times the preamble is transmitted.

3. The method according to claim 1 or 2, characterized in that, The total number of preamble transmissions is N, where N is a positive integer, and the first correspondence includes one or more of the following: The number of the target first signal is 1, and the number of times the preamble corresponding to the target first signal is sent is N; Alternatively, the number of the target first signals is K, where K is a positive integer greater than 1, and the number of preamble transmissions corresponding to each target first signal includes one or more of the following: 1, 2, ..., N, and the sum of the number of preamble transmissions corresponding to each target first signal is the total number of preamble transmissions.

4. The method according to claim 3, characterized in that, The first correspondence includes one or more of the following: The number of target first signals is 1, and the number of times the preamble corresponding to the target first signal is sent is N; or, the number of target first signals is 2, and the number of times the preamble corresponding to each target first signal is sent is N / 2; or, the number of target first signals is 4, and the number of times the preamble corresponding to each target first signal is sent is N / 4.

5. The method according to claim 1 or 2, characterized in that, The configuration information is also used to indicate the priority information of each preamble transmission method when the total number of preamble transmissions is the same.

6. The method according to claim 1 or 2, characterized in that, The configuration information is also used to instruct that a preamble be sent on the RO associated with the target first signal in ascending order of the index of the target first signal.

7. The method according to claim 6, characterized in that, Preambles are continuously transmitted on the RO associated with the target first signal at the same index. Alternatively, preambles are periodically sent on the ROs associated with the target first signal in ascending order of their indexes, with the indexes of the target first signal associated with the ROs of two consecutive preambles being different.

8. The method according to claim 1 or 2, characterized in that, The configuration information is also used to indicate: When the number of the first target signals is greater than 1, the minimum interval of the indices of the first target signals, wherein the difference between any two indices of the first target signals is not less than the minimum interval; Alternatively, in cases with different numbers of target first signals, the index set to which the index of the target first signal belongs, the index set comprising one or more indices, or one or more combinations of indices.

9. The method according to claim 1 or 2, characterized in that, The determined preamble transmission method is based on the total number of preamble transmissions and the number of optional first signals. The number of reference signals for the target first signal in the determined preamble transmission method is less than or equal to the number of optional first signals. Wherein, the reference signal received power (RSRP) of the optional first signal is greater than a first preset threshold; the optional first signal belongs to the first signal, the target first signal belongs to the optional first signal, and the first signal is the SSB or CSI-RS received from the network device.

10. The method according to claim 9, characterized in that, The first preset threshold is determined based on a second correspondence between the total number of preamble transmissions and the first preset threshold. The configuration information also indicates the second correspondence.

11. The method according to claim 10, characterized in that, The total number of preamble transmissions is determined based on a third correspondence between the total number of preamble transmissions and a second preset threshold. The second preset threshold is determined based on the maximum value in the RSRP of the received first signal; The configuration information also indicates the third correspondence.

12. The method according to claim 1 or 2, characterized in that, The method further includes: Receive system information from network devices, the system information including the configuration information.

13. The method according to claim 1 or 2, characterized in that, The method further includes: If the total number of times the preamble is sent is greater than or equal to the third preset threshold, the random access message 3Msg3 is sent repeatedly.

14. A communication method, characterized in that, The method includes: Configuration information is sent to the terminal, the configuration information being used to indicate a first correspondence between the total number of preamble transmissions and the preamble transmission method; wherein, the preamble transmission method is used to indicate: the number of target first signals and the number of preamble transmissions corresponding to each target first signal; wherein, the random access opportunity (RO) associated with the target first signal is used to transmit the preamble, and the target first signal is a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS); The terminal receives a preamble, and the preamble transmission method used by the terminal is determined based on the configuration information.

15. The method according to claim 14, characterized in that, The sum of the number of times the preamble is transmitted for each of the target first signals is the total number of times the preamble is transmitted.

16. The method according to claim 14 or 15, characterized in that, The total number of preamble transmissions is N, where N is a positive integer, and the first correspondence includes one or more of the following: The number of the target first signal is 1, and the number of times the preamble corresponding to the target first signal is sent is N; Alternatively, the number of the target first signals is K, where K is a positive integer greater than 1, and the number of preamble transmissions corresponding to each target first signal includes one or more of the following: 1, 2, ..., N, and the sum of the number of preamble transmissions corresponding to each target first signal is the total number of preamble transmissions.

17. The method according to claim 16, characterized in that, The first correspondence includes one or more of the following: The number of target first signals is 1, and the number of times the preamble corresponding to the target first signal is sent is N; or, the number of target first signals is 2, and the number of times the preamble corresponding to each target first signal is sent is N / 2; or, the number of target first signals is 4, and the number of times the preamble corresponding to each target first signal is sent is N / 4.

18. The method according to claim 14 or 15, characterized in that, The configuration information is also used to indicate the priority information of each preamble transmission method when the total number of preamble transmissions is the same.

19. The method according to claim 14 or 15, characterized in that, The configuration information is also used to instruct that a preamble be sent on the RO associated with the target first signal in ascending order of the index of the target first signal.

20. The method according to claim 19, characterized in that, Preambles are continuously transmitted on the RO associated with the target first signal at the same index. Alternatively, preambles are periodically sent on the ROs associated with the target first signal in ascending order of their indexes, with the indexes of the target first signal associated with the ROs of two consecutive preambles being different.

21. The method according to claim 14 or 15, characterized in that, The configuration information is also used to indicate: When the number of the first target signals is greater than 1, the minimum interval of the indices of the first target signals, wherein the difference between any two indices of the first target signals is not less than the minimum interval; Alternatively, in cases with different numbers of target first signals, the index set to which the index of the target first signal belongs, the index set comprising one or more indices, or one or more combinations of indices.

22. The method according to claim 14 or 15, characterized in that, The reference signal received power (RSRP) of the target first signal is greater than a first preset threshold.

23. The method according to claim 22, characterized in that, The configuration information also indicates a second correspondence between the total number of preamble transmissions and the first preset threshold.

24. The method according to claim 22, characterized in that, The configuration information also indicates a third correspondence between the total number of preamble transmissions and the second preset threshold.

25. The method according to claim 14 or 15, characterized in that, The method further includes: Send system information, which includes the configuration information.

26. A communication device, characterized in that, Includes units for implementing the method according to any one of claims 1-25.

27. A communication device, characterized in that, Includes processor and transceiver; The transceiver is used to receive or send signals; The processor is configured to perform the method as described in any one of claims 1-25.

28. The communication device according to claim 27, characterized in that, The communication device also includes a memory: The memory is used to store computer programs; The processor is specifically configured to invoke the computer program from the memory, causing the communication device to perform the method as described in any one of claims 1-25.

29. A chip, characterized in that, The chip includes a processor. The processor is configured to receive configuration information from a network device, the configuration information being used to indicate a first correspondence between the total number of preamble transmissions and the preamble transmission method; wherein, the preamble transmission method is used to indicate: the number of target first signals and the number of preamble transmissions corresponding to each target first signal; wherein, the random access opportunity (RO) associated with the target first signal is used to transmit the preamble, and the target first signal is a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS); The processor is used to send a preamble to the network device based on the preamble transmission method determined by the configuration information.

30. A chip, characterized in that, The chip includes a processor. The processor is configured to send configuration information to the terminal, the configuration information being used to indicate a first correspondence between the total number of preamble transmissions and the preamble transmission method; wherein, the preamble transmission method is used to indicate: the number of target first signals and the number of preamble transmissions corresponding to each target first signal; wherein, the random access opportunity (RO) associated with the target first signal is used to transmit the preamble, and the target first signal is a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS); The processor is configured to receive a preamble from the terminal, wherein the preamble transmission method adopted by the terminal is determined based on the configuration information.

31. A module device, characterized in that, The module device includes a communication module, a power module, a storage module, and a chip module, wherein: The power module is used to provide electrical energy to the module device; The storage module is used to store data and instructions; The communication module is used for internal communication within the module device, or for communication between the module device and external devices. The chip module is used for: The system receives configuration information from a network device, which indicates a first correspondence between the total number of preamble transmissions and the preamble transmission method. The preamble transmission method indicates the number of target first signals and the number of preamble transmissions corresponding to each target first signal. The random access opportunity (RO) associated with each target first signal is used to transmit the preamble, and the target first signal is either a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS). Based on the preamble transmission method determined by the configuration information, the preamble is sent to the network device.

32. A module device, characterized in that, The module device includes a communication module, a power module, a storage module, and a chip module, wherein: The power module is used to provide electrical energy to the module device; The storage module is used to store data and instructions; The communication module is used for internal communication within the module device, or for communication between the module device and external devices. The chip module is used for: Configuration information is sent to the terminal, the configuration information being used to indicate a first correspondence between the total number of preamble transmissions and the preamble transmission method; wherein, the preamble transmission method is used to indicate: the number of target first signals and the number of preamble transmissions corresponding to each target first signal; wherein, the random access opportunity (RO) associated with the target first signal is used to transmit the preamble, and the target first signal is a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS); The terminal receives a preamble, and the preamble transmission method used by the terminal is determined based on the configuration information.

33. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-readable instructions that, when executed on a communication device, cause the communication device to perform the method described in any one of claims 1-25.

Images