Transmission method, communication device, and storage medium

Abstract

Disclosed in the present application are a transmission method, a communication device, and a storage medium. The transmission method comprises: sending a random access preamble on the basis of at least one physical random access channel occasion in at least one set of physical random access channel occasions. The technical solution of the present application can support the transmission of a plurality of physical random access channels for different transmit beams, thereby improving the random access performance.

Description

Transmission methods, communication equipment and storage media Technical Field

[0001] This application relates to the field of communication technology, specifically to a transmission method, communication equipment, and storage medium. Background Technology

[0002] The coverage performance of cellular communication networks not only directly affects service quality but also significantly impacts network construction and maintenance costs. With the continuous growth of service demands, uplink coverage has gradually become a major bottleneck restricting network performance improvement. Especially in the uplink, PRACH (Physical Random Access Channel) coverage enhancement is crucial, as it directly determines whether terminal devices can successfully initiate connections and access the network.

[0003] In the process of conceiving and implementing this application, the inventors discovered at least the following problems:

[0004] Existing protocols do not support transmission through multiple physical random access channels based on different transmit beams. This limitation forces terminal devices to repeatedly perform beam scanning during random access to determine the optimal uplink transmit beam, resulting in decreased beam scanning efficiency. Therefore, it is necessary to propose a mechanism that supports transmission through multiple physical random access channels with different transmit beams to improve random access performance.

[0005] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Technical solutions

[0006] The main objective of this application is to provide a transmission method, communication device, and storage medium, aiming to propose a transmission mechanism for multiple physical random access channels that supports different transmission beams, so as to improve random access performance.

[0007] This application provides a transmission method applicable to terminal devices (such as mobile phones), comprising the following steps:

[0008] S1: Transmit the random access preamble based on at least one physical random access channel timing from at least one set of physical random access channel timings.

[0009] Optionally, step S1 includes at least one of the following:

[0010] The random access preamble is transmitted based on N physical random access channel opportunities of a physical random access channel opportunity set.

[0011] The random access preamble is sent based on the first number of physical random access channel opportunities of the N physical random access channel opportunity set.

[0012] The random access preamble is transmitted based on the N physical random access channel timings of the N physical random access channel timing set.

[0013] Optionally, the transmission method further includes at least one of the following:

[0014] The physical random access channel timing is the effective physical random access channel timing used for physical random access channel transmission of different transmit beams;

[0015] The N physical random access channel opportunities in the N physical random access channel opportunity set are the Xth valid physical random access channel opportunity in each physical random access channel opportunity set in the N physical random access channel opportunity set.

[0016] The first number of valid physical random access channel opportunities in a set of N physical random access channel opportunities use the same frequency domain resources;

[0017] N physical random access channel opportunities in a set of N physical random access channel opportunities use the same frequency domain resources;

[0018] If the number of frequency division multiplexing physical random access channel opportunities in a time instance is greater than 1, then at least two of the N physical random access channel opportunity sets use different frequency domain resources.

[0019] If the number of physical random access channel opportunities for frequency division multiplexing in a time instance is equal to 1, then at least two physical random access channel opportunity sets in the N physical random access channel opportunity sets use the same frequency domain resources.

[0020] Optionally, the transmission method further includes at least one of the following:

[0021] The effective physical random access channel timing for different transmit beams is associated with at least one synchronization signal block index;

[0022] The effective physical random access channel timings for different transmit beams are associated with the same preamble index;

[0023] The effective physical random access channel timing for different transmit beams is associated with different preamble indices;

[0024] N valid physical random access channel opportunities in a set of physical random access channel opportunities lie within a time period;

[0025] A set of physical random access channel opportunities contains L valid physical random access channel opportunities within a time period;

[0026] N physical random access channel opportunity sets are located within a time period;

[0027] N represents the number of different transmission beams;

[0028] X is less than or equal to the number of times the preamble is repeated in the same beam.

[0029] Optionally, the set of physical random access channel opportunities within a time period satisfies at least one of the following:

[0030] The first valid physical random access channel opportunity in the first set of physical random access channel opportunities is the first valid physical random access channel opportunity within the time period;

[0031] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity of each subsequent set of physical random access channel opportunities is located after the first valid physical random access channel opportunity of the previous set of physical random access channel opportunities, and is offset by the first consecutive valid physical random access channel opportunities in the time domain.

[0032] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity of each subsequent set of physical random access channel opportunities is located after the first valid physical random access channel opportunity of the previous set of physical random access channel opportunities, and is offset by the second consecutive time slot in the time domain.

[0033] If the first parameter is configured, then after the first physical random access channel timing set, the first valid physical random access channel timing of each subsequent physical random access channel timing set is located after the first valid physical random access channel timing of the previous physical random access channel timing set, and is offset in the time domain by the first parameter consecutive valid physical random access channel timings.

[0034] If the first parameter is not configured, then after the first physical random access channel timing set, the first valid physical random access channel timing of each subsequent physical random access channel timing set is located after the physical random access channel timing of the previous physical random access channel timing set.

[0035] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity in each subsequent set of physical random access channel opportunities is first sorted in ascending order by the frequency domain resource index of the frequency division multiplexing physical random access channel opportunity, and then sorted in ascending order by the time domain resource index of the time division multiplexing physical random access channel opportunity.

[0036] Optionally, the transmission method further includes at least one of the following:

[0037] A physical random access channel timing set includes N valid physical random access channel timings that are consecutive in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization signal block index, and each synchronization signal block index is associated with the same preamble index in the valid physical random access channel timings of the physical random access channel timing set.

[0038] A physical random access channel timing set includes N valid physical random access channel timings that are continuous in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization signal block index, and at least two valid physical random access channel timings in the physical random access channel timing set are associated with different preamble indices.

[0039] A physical random access channel timing set includes L valid physical random access channel timings that are consecutive in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization block index, and each synchronization block index is associated with the same preamble index in the valid physical random access channel timings of the physical random access channel timing set.

[0040] If, within a time period, after the first valid physical random access channel opportunity in a set of physical random access channel opportunities, the number of remaining valid physical random access channel opportunities is less than N-1, then the physical random access channel opportunities in that set of physical random access channel opportunities are invalid physical random access channel opportunities.

[0041] If, within a time period, after the first valid physical random access channel opportunity in a set of physical random access channel opportunities, the number of remaining valid physical random access channel opportunities is less than L-1, then the physical random access channel opportunities in that set of physical random access channel opportunities are invalid physical random access channel opportunities.

[0042] L is the number of times the preamble of the same beam is repeated;

[0043] N, X, and L are positive integers;

[0044] The first number is related to N and / or L.

[0045] This application also provides a transmission method applicable to network devices (such as base stations), comprising the following steps:

[0046] S2: Receive random access preamble, which is sent by the terminal device based on at least one physical random access channel timing from at least one set of physical random access channel timings.

[0047] Optionally, the terminal device transmits a random access preamble based on at least one physical random access channel timing from at least one set of physical random access channel timings, including at least one of the following:

[0048] The terminal device sends a random access preamble based on N physical random access channel opportunities from a set of physical random access channel opportunities;

[0049] The terminal device sends a random access preamble based on the first number of physical random access channel opportunities in the set of N physical random access channel opportunities.

[0050] The terminal device sends a random access preamble based on the N physical random access channel timings of the N physical random access channel timing set.

[0051] Optionally, the transmission method further includes at least one of the following:

[0052] The physical random access channel timing is the effective physical random access channel timing used for physical random access channel transmission of different transmit beams;

[0053] The N physical random access channel opportunities in the N physical random access channel opportunity set are the Xth valid physical random access channel opportunity in each physical random access channel opportunity set in the N physical random access channel opportunity set.

[0054] The first number of valid physical random access channel opportunities in a set of N physical random access channel opportunities use the same frequency domain resources;

[0055] N physical random access channel opportunities in a set of N physical random access channel opportunities use the same frequency domain resources;

[0056] N physical random access channel timing sets use different frequency domain resources;

[0057] If the number of frequency division multiplexing physical random access channel opportunities in a time instance is greater than 1, then at least two of the N physical random access channel opportunity sets use different frequency domain resources.

[0058] If the number of physical random access channel opportunities for frequency division multiplexing in a time instance is equal to 1, then at least two physical random access channel opportunity sets in the N physical random access channel opportunity sets use the same frequency domain resources.

[0059] Optionally, the transmission method further includes at least one of the following:

[0060] The effective physical random access channel timing for different transmit beams is associated with at least one synchronization signal block index;

[0061] The effective physical random access channel timings for different transmit beams are associated with the same preamble index;

[0062] The effective physical random access channel timing for different transmit beams is associated with different preamble indices;

[0063] N physical random access channel opportunity sets are located within a time period;

[0064] N valid physical random access channel opportunities in a set of physical random access channel opportunities lie within a time period;

[0065] A set of physical random access channel opportunities has L valid physical random access channel opportunities within a time period.

[0066] N physical random access channel opportunity sets are located within a time period;

[0067] N represents the number of different transmission beams;

[0068] X is less than or equal to the number of times the preamble is repeated in the same beam.

[0069] Optionally, the set of physical random access channel opportunities within a time period satisfies at least one of the following:

[0070] The first valid physical random access channel opportunity in the first set of physical random access channel opportunities is the first valid physical random access channel opportunity within the time period;

[0071] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity of each subsequent set of physical random access channel opportunities is located after the first valid physical random access channel opportunity of the previous set of physical random access channel opportunities, and is offset by the first consecutive valid physical random access channel opportunities in the time domain.

[0072] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity of each subsequent set of physical random access channel opportunities is located after the first valid physical random access channel opportunity of the previous set of physical random access channel opportunities, and is offset by the second consecutive time slot in the time domain.

[0073] If the first parameter is configured, then after the first physical random access channel timing set, the first valid physical random access channel timing of each subsequent physical random access channel timing set is located after the first valid physical random access channel timing of the previous physical random access channel timing set, and is offset in the time domain by the first parameter consecutive valid physical random access channel timings.

[0074] If the first parameter is not configured, then after the first physical random access channel timing set, the first valid physical random access channel timing of each subsequent physical random access channel timing set is located after all physical random access channel timings of the previous physical random access channel timing set.

[0075] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity in each subsequent set of physical random access channel opportunities is first sorted in ascending order by the frequency domain resource index of the frequency division multiplexing physical random access channel opportunity, and then sorted in ascending order by the time domain resource index of the time division multiplexing physical random access channel opportunity.

[0076] Optionally, the transmission method further includes at least one of the following:

[0077] A physical random access channel timing set includes N valid physical random access channel timings that are continuous in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization signal block index, and each synchronization signal block index is associated with the same preamble index in the valid physical random access channel timings of the physical random access channel timing set.

[0078] A physical random access channel timing set includes N valid physical random access channel timings that are continuous in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization signal block index, and at least two valid physical random access channel timings in the physical random access channel timing set are associated with different preamble indices.

[0079] A physical random access channel timing set includes L valid physical random access channel timings that are consecutive in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization block index, and each synchronization block index is associated with the same preamble index in the valid physical random access channel timings of the physical random access channel timing set.

[0080] If, within a time period, after the first valid physical random access channel opportunity in a set of physical random access channel opportunities, the number of remaining valid physical random access channel opportunities is less than N-1, then the physical random access channel opportunities in that set of physical random access channel opportunities are invalid physical random access channel opportunities.

[0081] If, within a time period, after the first valid physical random access channel opportunity in a set of physical random access channel opportunities, the number of remaining valid physical random access channel opportunities is less than L-1, then the physical random access channel opportunities in that set of physical random access channel opportunities are invalid physical random access channel opportunities.

[0082] L is the number of times the preamble of the same beam is repeated;

[0083] N, X, and L are positive integers;

[0084] The first number is related to N and / or L.

[0085] This application also provides a transmission device, the transmission device comprising:

[0086] The transmitting module is used to transmit a random access preamble based on at least one physical random access channel timing from at least one set of physical random access channel timings.

[0087] This application also provides a transmission device, the transmission device comprising:

[0088] The receiving module is used to receive a random access preamble, which is sent by the terminal device based on at least one physical random access channel timing from at least one set of physical random access channel timings.

[0089] This application also provides a communication device, including: a memory, a processor, and a transmission program stored in the memory and executable on the processor, wherein the transmission program, when executed by the processor, implements the steps of any of the transmission methods described above.

[0090] The communication equipment mentioned in this application may be a terminal device (such as a mobile phone) or a network device (such as a base station). The specific meaning needs to be clarified in the context.

[0091] This application also provides a computer-readable storage medium storing a transmission program, which, when executed by a processor, implements the steps of any of the transmission methods described above.

[0092] The technical solution of this application allows the terminal device to send a random access preamble based on at least one valid physical random access channel timing from at least one set of physical random access channel timings. This can support the transmission of multiple physical random access channels with different transmit beams, thereby improving random access performance. Attached Figure Description

[0093] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0094] Figure 1 is a schematic diagram of the hardware structure of a mobile terminal implementing various embodiments of this application;

[0095] Figure 2 is a communication network system architecture diagram provided in an embodiment of this application;

[0096] Figure 3 is a schematic diagram of the hardware structure of a controller 140 provided in this application;

[0097] Figure 4 is a schematic diagram of the hardware structure of a network node 150 provided in this application;

[0098] Figure 5 is a schematic flowchart of the transmission method shown in the first embodiment of this application;

[0099] Figure 6 is a schematic diagram of a transmission method according to the second embodiment of this application;

[0100] Figure 7 is a schematic diagram of a transmission method according to the third embodiment of this application;

[0101] Figure 8 is a schematic diagram of a transmission method according to the fourth embodiment of this application;

[0102] Figure 9 is a schematic diagram of a transmission method according to the fifth embodiment of this application;

[0103] Figure 10 is a schematic flowchart of the transmission method shown in the sixth embodiment of this application;

[0104] Figure 11 is a schematic diagram of the interaction process between the network device and the terminal device in the transmission method shown in the tenth embodiment of this application;

[0105] Figure 12 is a schematic diagram of the transmission device provided in an embodiment of this application;

[0106] Figure 13 is a second structural schematic diagram of the transmission device provided in an embodiment of this application;

[0107] Figure 14 is a schematic diagram of the structure of the communication device provided in the embodiment of this application.

[0108] The realization of the objectives, functional features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to specific embodiments.

[0109] Implementation methods of this application

[0110] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0111] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element, and / or, components, features, and elements with the same names in different embodiments of this application may have the same meaning or different meanings, the specific meaning of which must be determined by its interpretation in that specific embodiment or further in conjunction with the context of that specific embodiment.

[0112] It should be understood that although the terms first, second, third, etc., may be used herein to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this document, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if," as used herein, may be interpreted as "when," "when," or "in response to determination." Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms "comprising," "including," indicate the presence of the stated feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or," "and / or," "including at least one of the following," etc., as used in this application, may be interpreted as inclusive, or mean any one or any combination thereof. For example, "including at least one of the following: A, B, C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Similarly, "A, B, or C" or "A, B, and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Exceptions to this definition only occur when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0113] It should be understood that although the steps in the flowcharts of this application's embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the sub-steps or stages of other steps.

[0114] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”

[0115] It should be noted that step designations such as S1 and S2 are used in this document for the purpose of more clearly and concisely describing the corresponding content, and do not constitute a substantial limitation on the order. In specific implementation, those skilled in the art may execute S2 first and then S1, etc., but these should all be within the protection scope of this application.

[0116] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0117] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustrative purposes and has no specific meaning in itself. Therefore, "module," "part," or "unit" may be used interchangeably.

[0118] The communication equipment mentioned in this application may be a terminal device (such as a mobile phone) or a network device (such as a base station). The specific meaning needs to be clarified according to the context.

[0119] Terminal devices can be implemented in various forms. For example, the terminal devices described in this application may include smart terminal devices such as mobile phones, tablets, laptops, handheld computers, personal digital assistants (PDAs), portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminal devices such as digital TVs and desktop computers.

[0120] The following description will use a mobile terminal as an example. Those skilled in the art will understand that, apart from elements specifically designed for mobile purposes, the construction according to the embodiments of this application can also be applied to fixed-type terminal devices.

[0121] Please refer to Figure 1, which is a schematic diagram of the hardware structure of a mobile terminal implementing various embodiments of this application. The mobile terminal 100 may include: an RF (Radio Frequency) unit 101, a WiFi module 102, an audio output unit 103, an A / V (Audio / Video) input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111, etc. Those skilled in the art will understand that the mobile terminal structure shown in Figure 1 does not constitute a limitation on the mobile terminal. The mobile terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0122] The following section, with reference to Figure 1, provides a detailed description of each component of the mobile terminal:

[0123] The radio frequency unit 101 can be used for receiving and transmitting signals during information transmission or calls. Specifically, it receives downlink information from the base station and processes it with the processor 110; additionally, it transmits uplink data to the base station. Typically, the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc. And / or, the radio frequency unit 101 can also communicate wirelessly with networks and other devices. The aforementioned wireless communications may use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution), TDD-LTE (Time Division Duplexing-Long Term Evolution), 5G, and 6G.

[0124] WiFi is a short-range wireless transmission technology. Mobile terminals using WiFi module 102 can help users send and receive emails, browse web pages, and access streaming media, providing wireless broadband internet access. Although Figure 1 shows WiFi module 102, it is understood that it is not an essential component of the mobile terminal and can be omitted as needed without altering the essence of the invention.

[0125] The audio output unit 103 can convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into audio signals and output them as sound when the mobile terminal 100 is in call signal receiving mode, call mode, recording mode, voice recognition mode, broadcast receiving mode, or other modes. Furthermore, the audio output unit 103 can also provide audio output related to specific functions performed by the mobile terminal 100 (e.g., call signal receiving sound, message receiving sound, etc.). The audio output unit 103 may include a speaker, a buzzer, etc.

[0126] The A / V input unit 104 is used to receive audio or video signals. The A / V input unit 104 may include a graphics processing unit (GPU) 1041 and a microphone 1042. The GPU 1041 processes image data of still images or videos acquired by an image capture device (such as a camera) in video capture mode or image capture mode. The processed image frames can be displayed on the display unit 106. The image frames processed by the GPU 1041 can be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) in operating modes such as telephone call mode, recording mode, and voice recognition mode, and can process such sound into audio data. The processed audio (voice) data can be converted into a format that can be transmitted to a mobile communication base station via the radio frequency unit 101 in telephone call mode. The microphone 1042 can implement various types of noise cancellation (or suppression) algorithms to eliminate (or suppress) noise or interference generated during the reception and transmission of audio signals.

[0127] The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor and a proximity sensor. Optionally, the ambient light sensor can adjust the brightness of the display panel 1061 according to the ambient light level, and the proximity sensor can turn off the display panel 1061 and / or backlight when the mobile terminal 100 is moved to the ear. As a type of motion sensor, an accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that recognize the phone's posture (such as landscape / portrait switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc. Other sensors that may be configured in the phone, such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, and infrared sensors, will not be described in detail here.

[0128] The display unit 106 is used to display information input by the user or information provided to the user. The display unit 106 may include a display panel 1061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0129] User input unit 107 can be used to receive input numerical or character information, and generate key signal inputs related to user settings and function control of the mobile terminal. Optionally, user input unit 107 may include touch panel 1071 and other input devices 1072. Touch panel 1071, also known as touch screen, can collect touch operations on or near the user (such as operations performed by the user using a finger, stylus, or any suitable object or accessory on or near touch panel 1071), and drive corresponding connection devices according to a pre-set program. Touch panel 1071 may include two parts: touch detection device and touch controller. Optionally, touch detection device detects the user's touch position and the signal generated by the touch operation, and transmits the signal to touch controller; touch controller receives touch information from touch detection device, converts it into touch point coordinates, sends it to processor 110, and can receive and execute commands from processor 110. And / or, touch panel 1071 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may also include other input devices 1072. Optionally, other input devices 1072 may include, but are not limited to, one or more of the following: physical keyboard, function keys (such as volume control buttons, power buttons, etc.), trackball, mouse, joystick, etc., without being specifically limited here.

[0130] Optionally, the touch panel 1071 may cover the display panel 1061. When the touch panel 1071 detects a touch operation on or near it, it transmits the information to the processor 110 to determine the type of touch event. Subsequently, the processor 110 provides corresponding visual output on the display panel 1061 according to the type of touch event. Although in FIG. 1, the touch panel 1071 and the display panel 1061 are implemented as two independent components to realize the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 can be integrated to realize the input and output functions of the mobile terminal. The specific implementation is not limited here.

[0131] Interface unit 108 serves as an interface through which at least one external device can connect to mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, etc. Interface unit 108 may be used to receive input (e.g., data, power, etc.) from the external device and transmit the received input to one or more components within mobile terminal 100, or it may be used to transmit data between mobile terminal 100 and the external device.

[0132] The memory 109 can be used to store software programs and various data. The memory 109 may primarily include a program storage area and a data storage area. Optionally, the program storage area may store the operating system, applications required for at least one function (such as sound playback, image playback, etc.), etc.; the data storage area may store data created based on the use of the mobile phone (such as audio data, phonebook, etc.). And / or, the memory 109 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0133] The processor 110 is the control center of the mobile terminal. It connects various parts of the mobile terminal via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 109, and by calling data stored in the memory 109, it performs various functions and processes data of the mobile terminal, thereby providing overall monitoring of the mobile terminal. The processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor and a modem processor. Optionally, the application processor mainly handles the operating system, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 110.

[0134] The mobile terminal 100 may also include a power supply 111 (such as a battery) that supplies power to various components. Preferably, the power supply 111 can be logically connected to the processor 110 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system.

[0135] Although not shown in Figure 1, the mobile terminal 100 may also include a Bluetooth module, etc., which will not be described in detail here.

[0136] To facilitate understanding of the embodiments of this application, the communication network system on which the mobile terminal of this application is based is described below.

[0137] Please refer to Figure 2, which is a communication network system architecture diagram provided in an embodiment of this application. The communication network system is a New Radio (NR) system based on general mobile communication technology. The NR system includes a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203, and the operator's IP services 204, which are connected in sequence.

[0138] Optionally, UE201 can be the aforementioned terminal device 100, which will not be described in detail here.

[0139] E-UTRAN202 includes eNodeB2021 and other eNodeB2022, etc. Optionally, eNodeB2021 can connect to other eNodeB2022 via backhaul (e.g., X2 interface), and eNodeB2021 connects to EPC203, providing access from UE201 to EPC203.

[0140] EPC203 may include MME (Mobility Management Entity) 2031, HSS (Home Subscriber Server) 2032, other MMEs 2033, SGW (Serving Gateway) 2034, PGW (Packet Data Network Gateway) 2035, and PCRF (Policy and Charging Rules Function) 2036, etc. Optionally, MME2031 is the control node that handles signaling between UE201 and EPC203, providing bearer and connection management. HSS2032 is used to provide registers to manage functions such as the Home Location Register (not shown in the figure) and stores user-specific information such as service characteristics and data rates. All user data can be sent through SGW2034. PGW2035 can provide UE 201 IP address allocation and other functions. PCRF2036 is the policy and charging control decision point for service data flow and IP bearer resources. It selects and provides available policy and charging control decisions for the policy and charging enforcement function unit (not shown in the figure).

[0141] IP services 204 may include the Internet, intranet, IMS (IP Multimedia Subsystem), or other IP services.

[0142] Although the above description uses the LTE system as an example, those skilled in the art should know that this application is not only applicable to the LTE system, but also to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, 5G and future new network systems (such as 6G), etc., without limitation.

[0143] Figure 3 is a schematic diagram of the hardware structure of a controller 140 provided in this application. The controller 140 includes a memory 1401 and a processor 1402. The memory 1401 is used to store program instructions, and the processor 1402 is used to call the program instructions in the memory 1401 to execute the steps performed by the controller in the first embodiment of the above method. The implementation principle and beneficial effects are similar, and will not be described again here.

[0144] Optionally, the controller further includes a communication interface 1403, which can be connected to the processor 1402 via a bus 1404. The processor 1402 can control the communication interface 1403 to implement the receiving and sending functions of the controller 140.

[0145] Figure 4 is a schematic diagram of the hardware structure of a network node 150 provided in this application. The network node 150 includes a memory 1501 and a processor 1502. The memory 1501 is used to store program instructions, and the processor 1502 is used to call the program instructions in the memory 1501 to execute the steps performed by the first node in the above method embodiment. The implementation principle and beneficial effects are similar, and will not be described again here.

[0146] Optionally, the controller further includes a communication interface 1503, which can be connected to the processor 1502 via a bus 1504. The processor 1502 can control the communication interface 1503 to implement the receiving and sending functions of the network node 150.

[0147] The integrated modules described above, implemented as software functional modules, can be stored in a computer-readable storage medium. These software functional modules, stored in a storage medium, include several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute some steps of the methods of the various embodiments of this application.

[0148] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a storage medium or transmitted from one storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk, SSD), etc.

[0149] Based on the above-described mobile terminal hardware structure and communication network system, various embodiments of this application are proposed.

[0150] Technical terms used in this embodiment:

[0151] SSB: Synchronization Signal Block;

[0152] PRACH: Physical Random Access Channel.

[0153] First Embodiment

[0154] Referring to Figure 5, which is a flowchart illustrating the transmission method of the first embodiment of this application, the transmission method of this embodiment can be applied to terminal devices (such as mobile phones), including step S1:

[0155] Step S1: The terminal device sends a random access preamble based on at least one physical random access channel timing from at least one physical random access channel timing set.

[0156] This embodiment takes into account that existing protocols do not support transmission through multiple physical random access channels based on different transmit beams. Due to this limitation, the terminal device needs to repeatedly perform beam scanning during random access to determine the optimal uplink transmit beam, which leads to a decrease in beam scanning efficiency.

[0157] Therefore, this embodiment proposes a solution in which the terminal device transmits a random access preamble based on at least one physical random access channel timing from at least one set of physical random access channel timings. Through this embodiment, the terminal device can support multiple physical random access channel transmission mechanisms with different transmit beams, thereby improving random access performance.

[0158] Optionally, the random access preamble is sent from the terminal device to the network device.

[0159] Alternatively, network equipment may be base stations, etc.

[0160] Optionally, the terminal device transmits a random access preamble based on at least one physical random access channel timing from at least one set of physical random access channel timings, including at least one of the following:

[0161] The terminal device sends a random access preamble based on N physical random access channel opportunities from a set of physical random access channel opportunities;

[0162] The terminal device sends a random access preamble based on the first number of physical random access channel opportunities in the set of N physical random access channel opportunities.

[0163] The terminal device sends a random access preamble based on the N physical random access channel timings of the N physical random access channel timing set.

[0164] Optionally, the first number is related to N and / or L.

[0165] Optionally, the first number is equal to N*L.

[0166] Optionally, N represents the number of different transmission beams.

[0167] Optionally, L is the number of times the preamble of the same beam is repeated.

[0168] Optionally, N and L are positive integers.

[0169] Optionally, N and / or L are configured by system message 1 and / or radio resource control information.

[0170] Optionally, the physical random access channel timing is the effective physical random access channel timing for physical random access channel transmission of different transmit beams.

[0171] Optionally, different transmit beams correspond to different space filters.

[0172] Optionally, the terminal device transmits a random access preamble based on N physical random access channel opportunities within a set of physical random access channel opportunities. Specifically, the terminal device transmits random access preambles with different transmit beams on N valid physical random access channel opportunities within a set of physical random access channel opportunities.

[0173] Optionally, the terminal device transmits random access preambles with different transmit beams on N valid physical random access channel opportunities within a set of physical random access channel opportunities. Specifically, the terminal device uses different spatial filters to transmit the random access preambles on the N valid physical random access channel opportunities within this set of physical random access channel opportunities.

[0174] Optionally, the terminal device transmits a random access preamble based on a first number of physical random access channel opportunities from a set of N physical random access channel opportunities. Specifically, the terminal device transmits random access preambles with different transmit beams on the first number of valid physical random access channel opportunities from the set of N physical random access channel opportunities.

[0175] Optionally, the terminal device transmits random access preambles with different transmit beams on the first number of valid physical random access channel opportunities within the set of N physical random access channel opportunities. Specifically, the terminal device uses different spatial filters to transmit the random access preambles on the first number of valid physical random access channel opportunities within the set of N physical random access channel opportunities.

[0176] Optionally, the terminal device transmits a random access preamble based on N physical random access channel opportunities from the set of N physical random access channel opportunities. Specifically, the terminal device transmits random access preambles with different transmit beams on N valid physical random access channel opportunities from the set of N physical random access channel opportunities.

[0177] Optionally, the terminal device transmits random access preambles with different transmit beams on N valid physical random access channel opportunities out of the N physical random access channel opportunity set. Specifically, the terminal device uses different spatial filters to transmit the random access preambles on the N valid physical random access channel opportunities out of the N physical random access channel opportunity set.

[0178] Optionally, the N physical random access channel opportunities in the N physical random access channel opportunity set are the Xth valid physical random access channel opportunity in each physical random access channel opportunity set in the N physical random access channel opportunity set.

[0179] Optionally, X is less than or equal to the number of repetitions of the preamble of the same beam.

[0180] Optionally, X is a positive integer.

[0181] Optionally, X is configured by system message 1 and / or radio resource control information.

[0182] Optionally, the N physical random access channel opportunities in the N physical random access channel opportunity set are the Xth valid physical random access channel opportunity in each of the N physical random access channel opportunity sets. Specifically, when X is 1, the N physical random access channel opportunities in the N physical random access channel opportunity set are the 1st valid physical random access channel opportunity in each of the N physical random access channel opportunity sets.

[0183] Optionally, the first number of valid physical random access channel opportunities in the set of N physical random access channel opportunities use the same frequency domain resources.

[0184] Optionally, the N physical random access channel opportunities in the set of N physical random access channel opportunities use the same frequency domain resources.

[0185] Optionally, if the number of frequency-division multiplexed physical random access channel opportunities in a time instance is greater than 1, then at least two of the N physical random access channel opportunity sets use different frequency domain resources.

[0186] Optionally, if the number of frequency-division multiplexed physical random access channel opportunities in a time instance is equal to 1, then at least two physical random access channel opportunity sets in the N physical random access channel opportunity sets use the same frequency domain resources.

[0187] Optionally, the number of physical random access channel opportunities for frequency division multiplexing in a time instance is configured by system message 1 and / or radio resource control information.

[0188] Optionally, N valid physical random access channel opportunities of a physical random access channel opportunity set lie within a time period.

[0189] Optionally, L valid physical random access channel opportunities of a physical random access channel opportunity set lie within a time period.

[0190] Optionally, the N physical random access channel timing sets lie within a time period.

[0191] Optionally, the effective physical random access channel timing for different transmit beams is associated with the same at least one synchronization signal block index.

[0192] Optionally, the effective physical random access channel timing for different transmit beams is associated with the same preamble index.

[0193] Optionally, the effective physical random access channel timing for different transmit beams is associated with different preamble indices.

[0194] Optionally, the number of synchronization signal block indices associated with the physical random access channel timing is configured by system message 1 and / or radio resource control information.

[0195] Optionally, if the number of synchronization block indices associated with a physical random access channel opportunity is 1, then the effective physical random access channel opportunities of different transmit beams are associated with the same synchronization block index; specifically, if the number of synchronization block indices associated with a physical random access channel opportunity is P, then the effective physical random access channel opportunities of different transmit beams are associated with the same P synchronization block indices.

[0196] Optionally, P is a positive integer.

[0197] Optionally, a physical random access channel timing set includes N valid physical random access channel timings that are consecutive in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization signal block index, and each synchronization signal block index is associated with the same preamble index in the valid physical random access channel timings of the physical random access channel timing set.

[0198] Optionally, a physical random access channel timing set includes N valid physical random access channel timings that are continuous in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization signal block index, and at least two valid physical random access channel timings in the physical random access channel timing set are associated with different preamble indices.

[0199] Optionally, a physical random access channel timing set includes L valid physical random access channel timings that are consecutive in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization block index, and each synchronization block index is associated with the same preamble index in the valid physical random access channel timings of the physical random access channel timing set.

[0200] Optionally, if, within a time period, after the first valid physical random access channel opportunity in a set of physical random access channel opportunities, the number of remaining valid physical random access channel opportunities is less than N-1, then the physical random access channel opportunities in that set of physical random access channel opportunities are invalid physical random access channel opportunities.

[0201] Optionally, if, within a time period, after the first valid physical random access channel opportunity in a physical random access channel opportunity set, the number of remaining valid physical random access channel opportunities is less than L-1, then the physical random access channel opportunities in that physical random access channel opportunity set are invalid physical random access channel opportunities.

[0202] Optionally, the set of physical random access channel opportunities within a time period satisfies at least one of the following:

[0203] The first valid physical random access channel opportunity in the first set of physical random access channel opportunities is the first valid physical random access channel opportunity within the time period;

[0204] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity of each subsequent set of physical random access channel opportunities is located after the first valid physical random access channel opportunity of the previous set of physical random access channel opportunities, and is offset by the first consecutive valid physical random access channel opportunities in the time domain.

[0205] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity of each subsequent set of physical random access channel opportunities is located after the first valid physical random access channel opportunity of the previous set of physical random access channel opportunities, and is offset by the second consecutive time slot in the time domain.

[0206] If the first parameter is configured, then after the first physical random access channel timing set, the first valid physical random access channel timing of each subsequent physical random access channel timing set is located after the first valid physical random access channel timing of the previous physical random access channel timing set, and is offset in the time domain by the first parameter consecutive valid physical random access channel timings.

[0207] If the first parameter is not configured, then after the first physical random access channel timing set, the first valid physical random access channel timing of each subsequent physical random access channel timing set is located after the physical random access channel timing of the previous physical random access channel timing set.

[0208] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity in each subsequent set of physical random access channel opportunities is first sorted in ascending order by the frequency domain resource index of the frequency division multiplexing physical random access channel opportunity, and then sorted in ascending order by the time domain resource index of the time division multiplexing physical random access channel opportunity.

[0209] Optionally, the first offset and / or the second offset are positive integers.

[0210] Optionally, the first offset and / or the second offset are configured by system messages and / or radio resource control information.

[0211] Optionally, the first parameter is the msg1-RepetitionTimeOffsetROGroup parameter.

[0212] Optionally, the first parameter is configured by system message 1 and / or radio resource control information.

[0213] Optionally, for each frequency domain resource index of the physical random access channel timing for frequency division multiplexing, the first valid physical random access channel timing of the first physical random access channel timing set is the first valid physical random access channel timing under that frequency domain resource index.

[0214] Alternatively, for paired spectrum or supplemental uplink bands, all physical random access channel opportunities are valid physical random access channel opportunities.

[0215] Optionally, for unpaired spectrum, if a terminal device in a cell is not configured with a second parameter, and the physical random access channel timing of the cell is not earlier than the synchronization signal block in the same physical random access channel time slot, and there is at least an interval of Ngap symbols after the last synchronization signal block is received, then the physical random access channel timing of the cell in that physical random access channel time slot is a valid physical random access channel timing.

[0216] Optionally, for unpaired spectrum, if a terminal device in a cell is configured with a second parameter, and the physical random access channel timing of the cell is only located within the uplink symbol and no earlier than the synchronization signal block within the same physical random access channel time slot, and is at least Ngap symbols after the last downlink symbol and / or the last synchronization signal block, then the physical random access channel timing of the cell within that physical random access channel time slot is a valid physical random access channel timing.

[0217] Optionally, the second parameter is the tdd-UL-DL-ConfigurationCommon parameter.

[0218] Optionally, the second parameter is configured by system message 1 and / or radio resource control information.

[0219] Optionally, the values ​​for Ngap are shown in Table 1:

[0220] Table 1: Ngap values ​​for different preamble subcarrier spacings

[0221] Optionally, the physical random access channel timing does not include the physical random access channel timing in the subband full-duplex symbols.

[0222] Optionally, the physical random access channel timing does not include physical random access channel timing for physical random access channel time-domain adaptation.

[0223] Optionally, the effective physical random access channel timings for physical random access channel transmissions for different transmit beams do not include the effective physical random access channel timings in subband full-duplex symbols.

[0224] Optionally, the effective physical random access channel timings for physical random access channel transmissions for different transmit beams do not include the physical random access channel timings configured by the higher-layer parameter addl-RACH-Config-Adaptation.

[0225] Optionally, addl-RACH-Config-Adaptation is configured by System Message 1 and / or Radio Resource Control information.

[0226] Optionally, the association period refers to a period starting from frame 0 used to map the synchronization signal block index to the physical random access channel timing.

[0227] Optionally, the association period is the smallest integer value in the set determined by the physical random access channel configuration period in Table 2, and it is required that within one association period, the index of the actual transmitted synchronization signal block is mapped to the physical random access channel timing at least once.

[0228] Optionally, if, within an association period, after a number of integer cycles of mapping synchronization block indices to physical random access channel timings, there is still a set of physical random access channel timings or physical random access channel preambles that have not been mapped to at least one synchronization block index, then these physical random access channel timings or preambles will not be assigned any synchronization block index.

[0229] Optionally, the association mode period includes one or more association periods, and the mapping pattern between the physical random access channel timing and the synchronization signal block index is repeated at most once every 160 milliseconds within an association mode period.

[0230] Optionally, if there are still physical random access channel opportunities not associated with the synchronization signal block index after a certain number of associated periods, these opportunities will not be used for physical random access channel transmission.

[0231] Table 2: Mapping between PRACH configuration cycle and the correlation cycle from synchronization signal block to PRACH timing

[0232] Through the technical solution of this embodiment, the terminal device can send a random access preamble based on at least one valid physical random access channel timing from at least one set of physical random access channel timings. Since this embodiment's technical solution determines the resources for the terminal device to support multiple physical random access channel transmissions on different transmit beams, the terminal device can perform multiple physical random access channel transmissions on different transmit beams, thereby improving random access performance.

[0233] Second Embodiment

[0234] Based on the first embodiment of this application, a second embodiment of this application is proposed, which further discloses a method for sending a random access preamble.

[0235] This embodiment proposes a solution whereby the terminal device transmits a random access preamble based on at least one physical random access channel timing from at least one set of physical random access channel timings. Through this solution, the terminal device can support multiple physical random access channel transmission mechanisms with different transmit beams, thereby improving random access performance.

[0236] Optionally, the terminal device transmits the random access preamble based on at least one physical random access channel opportunity from at least one set of physical random access channel opportunities. Specifically, the terminal device transmits the random access preamble based on N physical random access channel opportunities from a set of physical random access channel opportunities.

[0237] Optionally, N represents the number of different transmission beams.

[0238] Optionally, N is a positive integer.

[0239] Optionally, N is configured by system message 1 and / or radio resource control information.

[0240] Optionally, the physical random access channel timing is the effective physical random access channel timing for physical random access channel transmission of different transmit beams.

[0241] Optionally, different transmit beams correspond to different space filters.

[0242] Optionally, the terminal device transmits a random access preamble based on N physical random access channel opportunities within a set of physical random access channel opportunities. Specifically, the terminal device transmits random access preambles with different transmit beams on N valid physical random access channel opportunities within a set of physical random access channel opportunities.

[0243] Optionally, the terminal device transmits random access preambles with different transmit beams on N valid physical random access channel opportunities within a set of physical random access channel opportunities. Specifically, the terminal device uses different spatial filters to transmit the random access preambles on the N valid physical random access channel opportunities within the set of physical random access channel opportunities.

[0244] Optionally, N valid physical random access channel opportunities of a physical random access channel opportunity set lie within a time period.

[0245] Optionally, the effective physical random access channel timing for different transmit beams is associated with the same at least one synchronization signal block index.

[0246] Optionally, N valid physical random access channel opportunities of a physical random access channel opportunity set are associated with the same at least one synchronization signal block index.

[0247] Optionally, the effective physical random access channel timing for different transmit beams is associated with the same preamble index.

[0248] Optionally, N valid physical random access channel opportunities in a set of physical random access channel opportunities are associated with the same preamble index.

[0249] Optionally, the effective physical random access channel timing for different transmit beams is associated with different preamble indices.

[0250] Optionally, N valid physical random access channel opportunities in a set of physical random access channel opportunities are associated with different preamble indices.

[0251] Optionally, the number of synchronization signal block indices associated with the physical random access channel timing is configured by system message 1 and / or radio resource control information.

[0252] Optionally, if the number of synchronization block indices associated with a physical random access channel opportunity is 1, then the effective physical random access channel opportunities of different transmit beams are associated with the same synchronization block index; specifically, if the number of synchronization block indices associated with a physical random access channel opportunity is P, then the effective physical random access channel opportunities of different transmit beams are associated with the same P synchronization block indices.

[0253] Optionally, P is a positive integer.

[0254] Optionally, a physical random access channel timing set includes N valid physical random access channel timings that are consecutive in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization signal block index, and each synchronization signal block index is associated with the same preamble index in the valid physical random access channel timings of the physical random access channel timing set.

[0255] Optionally, a physical random access channel timing set includes N valid physical random access channel timings that are continuous in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization signal block index, and at least two valid physical random access channel timings in the physical random access channel timing set are associated with different preamble indices.

[0256] Optionally, if, within a time period, after the first valid physical random access channel opportunity in a set of physical random access channel opportunities, the number of remaining valid physical random access channel opportunities is less than N-1, then the physical random access channel opportunities in that set of physical random access channel opportunities are invalid physical random access channel opportunities.

[0257] Optionally, the set of physical random access channel opportunities within a time period satisfies at least one of the following:

[0258] The first valid physical random access channel opportunity in the first set of physical random access channel opportunities is the first valid physical random access channel opportunity within the time period;

[0259] If the first parameter is configured, then after the first physical random access channel timing set, the first valid physical random access channel timing of each subsequent physical random access channel timing set is located after the first valid physical random access channel timing of the previous physical random access channel timing set, and is offset in the time domain by the first parameter consecutive valid physical random access channel timings.

[0260] If the first parameter is not configured, then after the first physical random access channel timing set, the first valid physical random access channel timing of each subsequent physical random access channel timing set is located after the physical random access channel timing of the previous physical random access channel timing set.

[0261] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity in each subsequent set of physical random access channel opportunities is first sorted in ascending order by the frequency domain resource index of the frequency division multiplexing physical random access channel opportunity, and then sorted in ascending order by the time domain resource index of the time division multiplexing physical random access channel opportunity.

[0262] Optionally, the first parameter is the msg1-RepetitionTimeOffsetROGroup parameter.

[0263] Optionally, the first parameter is configured by system message 1 and / or radio resource control information.

[0264] Optionally, for each frequency domain resource index of the physical random access channel timing for frequency division multiplexing, the first valid physical random access channel timing of the first physical random access channel timing set is the first valid physical random access channel timing under that frequency domain resource index.

[0265] Optionally, the number of actual transmitted synchronization signal blocks and the index of the actual transmitted synchronization signal blocks are configured by system message 1 and / or radio resource control information.

[0266] Optionally, the number of physical random access channel opportunities for frequency division multiplexing in a time instance is configured by system message 1 and / or radio resource control information.

[0267] Optionally, as shown in Figure 6, the number of actual transmitted synchronization signal blocks is set to 2, and the indexes of the actual transmitted synchronization signal blocks are 0 and 1 (that is, the actual transmitted synchronization signal blocks are SSB 0 and SSB 1).

[0268] Optionally, if the number of physical random access channels in a time instance is 2, that is, the number of ROs in the frequency domain in a time instance is 2, and one SSB is associated with 2 ROs, then the 2 ROs in the frequency domain are associated with the same synchronization signal block.

[0269] Optionally, if the number of different transmit beams N is 2, then the two ROs associated with the same synchronization signal block in the time domain form a physical random access channel opportunity set. For example, the two ROs of synchronization signal block 0 under the first frequency domain index form a physical random access channel opportunity set (as shown by the left diagonal shaded line in Figure 6); as another example, the two ROs associated with synchronization signal block 0 in the time domain under the second frequency domain index form another physical random access channel opportunity set (as shown by the horizontal shaded line in Figure 6).

[0270] Optionally, the terminal device transmits a random access preamble based on N physical random access channel opportunities from a set of physical random access channel opportunities. Specifically, if the terminal device selects the first set of ROs to transmit random access preambles with different beams, and both physical random access channel opportunities in the first set of ROs are valid physical random access channel opportunities, then the terminal device transmits two random access preambles with different transmit beams on the two valid physical random access channel opportunities in the set of ROs shaded by the left diagonal line in Figure 6.

[0271] Alternatively, for paired spectrum or supplemental uplink bands, all physical random access channel opportunities are valid physical random access channel opportunities.

[0272] Optionally, for unpaired spectrum, if a terminal device in a cell is not configured with a second parameter, and the physical random access channel timing of the cell is not earlier than the synchronization signal block in the same physical random access channel time slot, and there is at least an interval of Ngap symbols after the last synchronization signal block is received, then the physical random access channel timing of the cell in that physical random access channel time slot is a valid physical random access channel timing.

[0273] Optionally, for unpaired spectrum, if a terminal device in a cell is configured with a second parameter, and the physical random access channel timing of the cell is only located within the uplink symbol and no earlier than the synchronization signal block within the same physical random access channel time slot, and is at least Ngap symbols after the last downlink symbol and / or the last synchronization signal block, then the physical random access channel timing of the cell within that physical random access channel time slot is a valid physical random access channel timing.

[0274] Optionally, the second parameter is the tdd-UL-DL-ConfigurationCommon parameter.

[0275] Optionally, the second parameter is configured by system message 1 and / or radio resource control information.

[0276] Optionally, the values ​​for Ngap are shown in Table 1.

[0277] Optionally, the physical random access channel timing does not include the physical random access channel timing in the subband full-duplex symbols.

[0278] Optionally, the physical random access channel timing does not include physical random access channel timing for physical random access channel time-domain adaptation.

[0279] Optionally, the effective physical random access channel timings for physical random access channel transmissions for different transmit beams do not include the effective physical random access channel timings in subband full-duplex symbols.

[0280] Optionally, the effective physical random access channel timings for physical random access channel transmissions for different transmit beams do not include the physical random access channel timings configured by the higher-layer parameter addl-RACH-Config-Adaptation.

[0281] Optionally, addl-RACH-Config-Adaptation is configured by System Message 1 and / or Radio Resource Control information.

[0282] Optionally, the association period refers to a period starting from frame 0 used to map the synchronization signal block index to the physical random access channel timing.

[0283] Optionally, the association period is the smallest integer value in the set determined by the physical random access channel configuration period in Table 2, and it is required that within one association period, the index of the actual transmitted synchronization signal block is mapped to the physical random access channel timing at least once.

[0284] Optionally, if, within an association period, after a number of integer cycles of mapping synchronization block indices to physical random access channel timings, there is still a set of physical random access channel timings or physical random access channel preambles that have not been mapped to at least one synchronization block index, then these physical random access channel timings or preambles will not be assigned any synchronization block index.

[0285] Optionally, the association mode period includes one or more association periods, and within one association mode period, the mapping pattern between the physical random access channel timing and the synchronization signal block index repeats at most once every 160 milliseconds.

[0286] Optionally, if there are still physical random access channel opportunities not associated with the synchronization signal block index after a certain number of associated periods, these opportunities will not be used for physical random access channel transmission.

[0287] Through the technical solution of this embodiment, the terminal device transmits a random access preamble based on at least one valid physical random access channel opportunity from at least one set of physical random access channel opportunities. Specifically, the terminal device transmits N random access preambles with different transmit beams on N physical random access channel opportunities from a set of physical random access channel opportunities. This technical solution can determine resources for the terminal device to support multiple physical random access channel transmissions on different transmit beams. Therefore, the terminal device can perform multiple physical random access channel transmissions on different transmit beams, thereby improving random access performance. Based on this technical solution, the terminal device can complete random access transmissions on different transmit beams, and / or support improved random access flexibility and / or overall performance, while maintaining compatibility with existing protocols.

[0288] Third Embodiment

[0289] Based on any of the above embodiments of this application, a third embodiment of this application is proposed, which further discloses a method for sending a random access preamble.

[0290] This embodiment proposes a solution whereby the terminal device transmits a random access preamble based on at least one physical random access channel timing from at least one set of physical random access channel timings. Through this solution, the terminal device can support multiple physical random access channel transmission mechanisms with different transmit beams, thereby improving random access performance.

[0291] Optionally, the terminal device transmits a random access preamble based on at least one physical random access channel opportunity from at least one set of physical random access channel opportunities. Specifically, the terminal device transmits a random access preamble based on a first number of physical random access channel opportunities from a set of N physical random access channel opportunities.

[0292] Optionally, N represents the number of different transmission beams.

[0293] Optionally, the first number is related to N and / or L.

[0294] Optionally, the first number is equal to N*L.

[0295] Optionally, L is the number of times the preamble of the same beam is repeated.

[0296] Optionally, N and / or L are positive integers.

[0297] Optionally, N and / or L are configured by system message 1 and / or radio resource control information.

[0298] Optionally, the physical random access channel timing is the effective physical random access channel timing for physical random access channel transmission of different transmit beams.

[0299] Optionally, different transmit beams correspond to different space filters.

[0300] Optionally, the terminal device transmits a random access preamble based on a first number of physical random access channel opportunities from a set of N physical random access channel opportunities. Specifically, the terminal device transmits random access preambles with different transmit beams on the first number of valid physical random access channel opportunities from the set of N physical random access channel opportunities.

[0301] Optionally, the terminal device transmits random access preambles with different transmit beams on the first number of valid physical random access channel opportunities within the set of N physical random access channel opportunities. Specifically, the terminal device uses different spatial filters to transmit the random access preambles on the first number of valid physical random access channel opportunities within the set of N physical random access channel opportunities.

[0302] Optionally, L valid physical random access channel opportunities of a physical random access channel opportunity set lie within a time period.

[0303] Optionally, the N physical random access channel timing sets lie within a time period.

[0304] Optionally, the first number of valid physical random access channel opportunities in the set of N physical random access channel opportunities lie within a time period.

[0305] Optionally, the effective physical random access channel timing for different transmit beams is associated with the same at least one synchronization signal block index.

[0306] Optionally, the first number of valid physical random access channel opportunities in the set of N physical random access channel opportunities are associated with the same at least one synchronization signal block index.

[0307] Optionally, the effective physical random access channel timing for different transmit beams is associated with the same preamble index.

[0308] Optionally, the first number of valid physical random access channel opportunities in the set of N physical random access channel opportunities are associated with the same preamble index.

[0309] Optionally, the effective physical random access channel timing for different transmit beams is associated with different preamble indices.

[0310] Optionally, the first number of valid physical random access channel opportunities in the set of N physical random access channel opportunities are associated with different preamble indices.

[0311] Optionally, the first number of valid physical random access channel opportunities in the set of N physical random access channel opportunities use the same frequency domain resources.

[0312] Optionally, at least two of the N physical random access channel timing sets use different frequency domain resources.

[0313] Optionally, if the number of frequency-division multiplexed physical random access channel opportunities in a time instance is greater than 1, then at least two of the N physical random access channel opportunity sets use different frequency domain resources.

[0314] Optionally, if the number of frequency-division multiplexed physical random access channel opportunities in a time instance is equal to 1, then at least two physical random access channel opportunity sets in the N physical random access channel opportunity sets use the same frequency domain resources.

[0315] Optionally, the number of physical random access channel opportunities for frequency division multiplexing in a time instance is configured by system message 1 and / or radio resource control information.

[0316] Optionally, a physical random access channel timing set includes L valid physical random access channel timings that are consecutive in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization block index, and each synchronization block index is associated with the same preamble index in the valid physical random access channel timings of the physical random access channel timing set.

[0317] Optionally, if, within a time period, after the first valid physical random access channel opportunity in a physical random access channel opportunity set, the number of remaining valid physical random access channel opportunities is less than L-1, then the physical random access channel opportunities in that physical random access channel opportunity set are invalid physical random access channel opportunities.

[0318] Optionally, the set of physical random access channel opportunities within a time period satisfies at least one of the following:

[0319] The first valid physical random access channel opportunity in the first set of physical random access channel opportunities is the first valid physical random access channel opportunity within the time period;

[0320] If the first parameter is configured, then after the first physical random access channel timing set, the first valid physical random access channel timing of each subsequent physical random access channel timing set is located after the first valid physical random access channel timing of the previous physical random access channel timing set, and is offset in the time domain by the first parameter consecutive valid physical random access channel timings.

[0321] If the first parameter is not configured, then after the first physical random access channel timing set, the first valid physical random access channel timing of each subsequent physical random access channel timing set is located after the physical random access channel timing of the previous physical random access channel timing set.

[0322] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity in each subsequent set of physical random access channel opportunities is first sorted in ascending order by the frequency domain resource index of the frequency division multiplexing physical random access channel opportunity, and then sorted in ascending order by the time domain resource index of the time division multiplexing physical random access channel opportunity.

[0323] Optionally, the first parameter is the msg1-RepetitionTimeOffsetROGroup parameter.

[0324] Optionally, the first parameter is configured by system message 1 and / or radio resource control information.

[0325] Optionally, for each frequency domain resource index of the physical random access channel timing for frequency division multiplexing, the first valid physical random access channel timing of the first physical random access channel timing set is the first valid physical random access channel timing under that frequency domain resource index.

[0326] Optionally, the number of actual transmitted synchronization signal blocks and the index of the actual transmitted synchronization signal blocks are configured by system message 1 and / or radio resource control information.

[0327] Optionally, as shown in Figure 7, the number of actual transmitted synchronization signal blocks is set to 2, and the indexes of the actual transmitted synchronization signal blocks are 0 and 1 (that is, the actual transmitted synchronization signal blocks are SSB 0 and SSB 1).

[0328] Optionally, if the number of physical random access channel opportunities in a time instance is 2, that is, the number of physical random access channel opportunities in the frequency domain in a time instance is 2, and a synchronization signal block is associated with 2 physical random access channel opportunities, then the 2 physical random access channel opportunities in the frequency domain are associated with the same synchronization signal block.

[0329] Optionally, if the number of different transmit beams N is 2, and the number of repetitions L of the preamble of the same beam is 2, then two physical random access channel opportunities associated with the same synchronization signal block in the time domain constitute a physical random access channel opportunity set. For example, the two physical random access channel opportunities associated with synchronization signal block 0 in the time domain under the first frequency domain index constitute the first physical random access channel opportunity set (as shown by the left diagonal shaded line in Figure 7); as another example, the two physical random access channel opportunities associated with synchronization signal block 0 in the time domain under the second frequency domain index constitute the second physical random access channel opportunity set (as shown by the horizontal shaded line in Figure 7); as yet another example, the two physical random access channel opportunities associated with synchronization signal block 0 in the time domain under the first frequency domain index after the first physical random access channel opportunity set constitute the third physical random access channel opportunity set (as shown by the right diagonal shaded line in Figure 7); and as yet another example, the two physical random access channel opportunities associated with synchronization signal block 0 in the time domain under the second frequency domain index after the second physical random access channel opportunity set constitute the fourth physical random access channel opportunity set (as shown by the vertical shaded line in Figure 7).

[0330] Optionally, the terminal device transmits a random access preamble based on a first number of physical random access channel opportunities from a set of N physical random access channel opportunities. Specifically, if the number of different transmit beams N is 4, and at least two physical random access channel opportunity sets among the N physical random access channel opportunity sets use different frequency domain resources, then the terminal device selects N*L = 8 physical random access channel opportunities from these consecutive N physical random access channel opportunity sets for transmission via 4 different transmit beam physical random access channels.

[0331] Optionally, as shown in Figure 7, the physical random access channel timing set shaded by the left diagonal line is used for the two repeated transmissions of beam 1; the set shaded by the horizontal line is used for the two repeated transmissions of beam 2; the physical random access channel timing set shaded by the right diagonal line is used for the two repeated transmissions of beam 3; and the set shaded by the vertical line is used for the two repeated transmissions of beam 4.

[0332] Alternatively, for paired spectrum or supplemental uplink bands, all physical random access channel opportunities are valid physical random access channel opportunities.

[0333] Optionally, for unpaired spectrum, if a terminal device in a cell is not configured with a second parameter, and the physical random access channel timing of the cell is not earlier than the synchronization signal block in the same physical random access channel time slot, and there is at least an interval of Ngap symbols after the last synchronization signal block is received, then the physical random access channel timing of the cell in that physical random access channel time slot is a valid physical random access channel timing.

[0334] Optionally, for unpaired spectrum, if a terminal device in a cell is configured with a second parameter, and the physical random access channel timing of the cell is only located within the uplink symbol and no earlier than the synchronization signal block within the same physical random access channel time slot, and is at least Ngap symbols after the last downlink symbol and / or the last synchronization signal block, then the physical random access channel timing of the cell within that physical random access channel time slot is a valid physical random access channel timing.

[0335] Optionally, the values ​​for Ngap are shown in Table 1.

[0336] Optionally, the second parameter is the tdd-UL-DL-ConfigurationCommon parameter.

[0337] Optionally, the second parameter is configured by system message 1 and / or radio resource control information.

[0338] Optionally, the physical random access channel timing does not include the physical random access channel timing in the subband full-duplex symbols.

[0339] Optionally, the physical random access channel timing does not include physical random access channel timing for physical random access channel time-domain adaptation.

[0340] Optionally, the effective physical random access channel timings for physical random access channel transmissions for different transmit beams do not include the effective physical random access channel timings in subband full-duplex symbols.

[0341] Optionally, the effective physical random access channel timings for physical random access channel transmissions for different transmit beams do not include the physical random access channel timings configured by the higher-layer parameter addl-RACH-Config-Adaptation.

[0342] Optionally, addl-RACH-Config-Adaptation is configured by System Message 1 and / or Radio Resource Control information.

[0343] Optionally, the association period refers to a period starting from frame 0 used to map the synchronization signal block index to the physical random access channel timing.

[0344] Optionally, the association period is the smallest integer value in the set determined by the physical random access channel configuration period in Table 2, and it is required that within one association period, the index of the actual transmitted synchronization signal block is mapped to the physical random access channel timing at least once.

[0345] Optionally, if, within an association period, after a number of integer cycles of mapping synchronization block indices to physical random access channel timings, there is still a set of physical random access channel timings or physical random access channel preambles that have not been mapped to at least one synchronization block index, then these physical random access channel timings or preambles will not be assigned any synchronization block index.

[0346] Optionally, the association mode period includes one or more association periods, and the mapping pattern between the physical random access channel timing and the synchronization signal block index is repeated at most once every 160 milliseconds within an association mode period.

[0347] Optionally, if there are still physical random access channel opportunities not associated with the synchronization signal block index after a certain number of associated periods, these opportunities will not be used for physical random access channel transmission.

[0348] Through the technical solution of this embodiment, the terminal device transmits a random access preamble based on at least one valid physical random access channel (PRAM) opportunity from at least one set of PRAM opportunities. Specifically, the terminal device transmits N random access preambles with different transmit beams on a first number of PRAM opportunities from a set of N PRAM opportunities. Compared to the second embodiment, the technical solution of this embodiment can determine resources for the terminal device to support the transmission of multiple PRAMs with different transmit beams while maintaining the repeated transmission of the same beam. Therefore, based on the technical solution of this embodiment, the transmission of PRAMs with the same beam can be guaranteed, and / or the transmission of PRAMs with different beams can be realized, and / or compatibility with existing protocols can be maintained.

[0349] Fourth embodiment

[0350] Based on any of the above embodiments of this application, a fourth embodiment of this application is proposed, which further discloses a method for sending a random access preamble.

[0351] This embodiment proposes a solution whereby the terminal device transmits a random access preamble based on at least one physical random access channel timing from at least one set of physical random access channel timings. Through this solution, the terminal device can support multiple physical random access channel transmission mechanisms with different transmit beams, thereby improving random access performance.

[0352] Optionally, the terminal device transmits a random access preamble based on at least one physical random access channel opportunity from at least one set of physical random access channel opportunities. Specifically, the terminal device transmits a random access preamble based on N physical random access channel opportunities from a set of N physical random access channel opportunities.

[0353] Optionally, N represents the number of different transmission beams.

[0354] Optionally, N is a positive integer.

[0355] Optionally, the physical random access channel timing is the effective physical random access channel timing for physical random access channel transmission of different transmit beams.

[0356] Optionally, different spatial filters correspond to different transmission beams.

[0357] Optionally, the terminal device transmits a random access preamble based on N physical random access channel opportunities from the set of N physical random access channel opportunities. Specifically, the terminal device transmits random access preambles with different transmit beams on N valid physical random access channel opportunities from the set of N physical random access channel opportunities.

[0358] Optionally, the terminal device transmits random access preambles with different transmit beams on N valid physical random access channel opportunities out of the N physical random access channel opportunity set. Specifically, the terminal device uses different spatial filters to transmit the random access preambles on the N valid physical random access channel opportunities out of the N physical random access channel opportunity set.

[0359] Optionally, the N physical random access channel opportunities in the N physical random access channel opportunity set are the Xth valid physical random access channel opportunity in each physical random access channel opportunity set in the N physical random access channel opportunity set.

[0360] Optionally, X is less than or equal to the number of repetitions of the preamble of the same beam.

[0361] Optionally, X is a positive integer.

[0362] Optionally, X is configured by system message 1 and / or radio resource control information.

[0363] Optionally, the N physical random access channel opportunities in the N physical random access channel opportunity sets are the Xth valid physical random access channel opportunity in each of the N physical random access channel opportunity sets. Specifically, when X is 1, the N physical random access channel opportunities in the N physical random access channel opportunity sets are the 1st valid physical random access channel opportunity in each of the N physical random access channel opportunity sets.

[0364] Optionally, L valid physical random access channel opportunities of a physical random access channel opportunity set lie within a time period.

[0365] Optionally, the N physical random access channel timing sets lie within a time period.

[0366] Optionally, the N valid physical random access channel opportunities of the N physical random access channel opportunity set lie within a time period.

[0367] Optionally, the effective physical random access channel timing for different transmit beams is associated with the same at least one synchronization signal block index.

[0368] Optionally, the N valid physical random access channel opportunities of the N physical random access channel opportunity set are associated with the same at least one synchronization signal block index.

[0369] Optionally, the effective physical random access channel timing for different transmit beams is associated with the same preamble index.

[0370] Optionally, the N valid physical random access channel opportunities of the N physical random access channel opportunity set are associated with the same preamble index.

[0371] Optionally, the effective physical random access channel timing for different transmit beams is associated with different preamble indices.

[0372] Optionally, the N valid physical random access channel opportunities of the N physical random access channel opportunity set are associated with different preamble indices.

[0373] Optionally, the N valid physical random access channel opportunities of the N physical random access channel opportunity set use the same frequency domain resources.

[0374] Optionally, at least two of the N physical random access channel timing sets use different frequency domain resources.

[0375] Optionally, if the number of frequency-division multiplexed physical random access channel opportunities in a time instance is greater than 1, then at least two of the N physical random access channel opportunity sets use different frequency domain resources.

[0376] Optionally, if the number of frequency-division multiplexed physical random access channel opportunities in a time instance is equal to 1, then at least two physical random access channel opportunity sets in the N physical random access channel opportunity sets use the same frequency domain resources.

[0377] Optionally, the number of physical random access channel opportunities for frequency division multiplexing in a time instance is configured by system message 1 and / or radio resource control information.

[0378] Optionally, a physical random access channel timing set includes L valid physical random access channel timings that are consecutive in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization block index, and each synchronization block index is associated with the same preamble index in the valid physical random access channel timings of the physical random access channel timing set.

[0379] Optionally, if, within a time period, after the first valid physical random access channel opportunity in a physical random access channel opportunity set, the number of remaining valid physical random access channel opportunities is less than L-1, then the physical random access channel opportunities in that physical random access channel opportunity set are invalid physical random access channel opportunities.

[0380] Optionally, the set of physical random access channel opportunities within a time period satisfies at least one of the following:

[0381] The first valid physical random access channel opportunity in the first set of physical random access channel opportunities is the first valid physical random access channel opportunity within the time period;

[0382] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity of each subsequent set of physical random access channel opportunities is located after the first valid physical random access channel opportunity of the previous set of physical random access channel opportunities, and is offset by the first consecutive valid physical random access channel opportunities in the time domain.

[0383] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity of each subsequent set of physical random access channel opportunities is located after the first valid physical random access channel opportunity of the previous set of physical random access channel opportunities, and is offset by the second consecutive time slot in the time domain.

[0384] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity in each subsequent set of physical random access channel opportunities is first sorted in ascending order by the frequency domain resource index of the frequency division multiplexing physical random access channel opportunity, and then sorted in ascending order by the time domain resource index of the time division multiplexing physical random access channel opportunity.

[0385] Optionally, for each frequency domain resource index of the physical random access channel timing for frequency division multiplexing, the first valid physical random access channel timing of the first physical random access channel timing set is the first valid physical random access channel timing under that frequency domain resource index.

[0386] Optionally, the physical random access channel timings of different transmit beams are offset in the time domain by a first consecutive set of valid physical random access channel timings between two adjacent physical random access channel timing sets.

[0387] Optionally, the physical random access channel timings of different transmit beams are offset by a second consecutive time slot in the time domain between two adjacent physical random access channel timing sets.

[0388] Optionally, the first offset and / or the second offset are positive integers.

[0389] Optionally, the first offset and / or the second offset are configured by system messages and / or radio resource control information.

[0390] Optionally, the number of actual transmitted synchronization signal blocks and the index of the actual transmitted synchronization signal blocks are configured by system message 1 and / or radio resource control information.

[0391] Optionally, as shown in Figure 8, the number of actual transmitted synchronization signal blocks is set to 2, and the indexes of the actual transmitted synchronization signal blocks are 0 and 1 (that is, the actual transmitted synchronization signal blocks are SSB 0 and SSB 1).

[0392] Optionally, if the number of physical random access channel opportunities (PRANs) in a time instance is 1 (i.e., the number of PRANs in the frequency domain in a time instance is 1), and one SSB is associated with one PRAN, the number of different transmit beams N is 2, and the number of repetitions L of the preamble of the same beam is 2, then two PRANs associated with the same synchronization signal block in the time domain constitute a set of PRANs. For example, the two PRANs of synchronization signal block 0 (shaded by the left diagonal line in Figure 8) constitute a set of PRANs; the two PRANs of synchronization signal block 0 (shaded by the horizontal line in Figure 8) constitute a set of PRANs.

[0393] Optionally, if the physical random access channel timings of different transmit beams belong to two adjacent physical random access channel timing sets, and there is a first offset consecutive valid physical random access channel timing in the time domain, and the number of different transmit beams N is 2, the N physical random access channel timing sets use the same frequency domain resources, and X equals 1, then the terminal device selects the first physical random access channel timing in these two physical random access channel timing sets to perform physical random access channel transmission with two different transmit beams.

[0394] Optionally, the first physical random access channel timing in the left diagonal shaded area of ​​Figure 8 is used for beam 1 transmission; the first physical random access channel timing in the horizontal shaded area of ​​Figure 8 is used for beam 2 transmission.

[0395] Alternatively, for paired spectrum or supplemental uplink bands, all physical random access channel opportunities are valid physical random access channel opportunities.

[0396] Optionally, for unpaired spectrum, if a terminal device in a cell is not configured with a second parameter, and the physical random access channel timing of the cell is not earlier than the synchronization signal block in the same physical random access channel time slot, and there is at least an interval of Ngap symbols after the last synchronization signal block is received, then the physical random access channel timing of the cell in that physical random access channel time slot is a valid physical random access channel timing.

[0397] Optionally, for unpaired spectrum, if a terminal device in a cell is configured with a second parameter, and the physical random access channel timing of the cell is only located within the uplink symbol and no earlier than the synchronization signal block within the same physical random access channel time slot, and is at least Ngap symbols after the last downlink symbol and / or the last synchronization signal block, then the physical random access channel timing of the cell within that physical random access channel time slot is a valid physical random access channel timing.

[0398] Optionally, the values ​​for Ngap are shown in Table 1.

[0399] Optionally, the second parameter is the tdd-UL-DL-ConfigurationCommon parameter.

[0400] Optionally, the second parameter is configured by system message 1 and / or radio resource control information.

[0401] Optionally, the physical random access channel timing does not include the physical random access channel timing in the subband full-duplex symbols.

[0402] Optionally, the physical random access channel timing does not include physical random access channel timing for physical random access channel time-domain adaptation.

[0403] Optionally, the effective physical random access channel timings for physical random access channel transmissions for different transmit beams do not include the effective physical random access channel timings in subband full-duplex symbols.

[0404] Optionally, the effective physical random access channel timings for physical random access channel transmissions for different transmit beams do not include the physical random access channel timings configured by the higher-layer parameter addl-RACH-Config-Adaptation.

[0405] Optionally, addl-RACH-Config-Adaptation is configured by System Message 1 and / or Radio Resource Control information.

[0406] Optionally, the association period refers to a period starting from frame 0 used to map the synchronization signal block index to the physical random access channel timing.

[0407] Optionally, the association period is the smallest integer value in the set determined by the physical random access channel configuration period in Table 2, and it is required that within one association period, the index of the actual transmitted synchronization signal block is mapped to the physical random access channel timing at least once.

[0408] Optionally, if, within an association period, after a number of integer cycles of mapping synchronization block indices to physical random access channel timings, there is still a set of physical random access channel timings or physical random access channel preambles that have not been mapped to at least one synchronization block index, then these physical random access channel timings or preambles will not be assigned any synchronization block index.

[0409] Optionally, the association mode period includes one or more association periods, and the mapping pattern between the physical random access channel timing and the synchronization signal block index is repeated at most once every 160 milliseconds within an association mode period.

[0410] Optionally, if there are still physical random access channel opportunities not associated with the synchronization signal block index after a certain number of associated periods, these opportunities will not be used for physical random access channel transmission.

[0411] Through the technical solution of this embodiment, the terminal device transmits a random access preamble based on at least one valid physical random access channel opportunity from at least one set of physical random access channel opportunities. Specifically, the terminal device transmits N random access preambles for different transmission beams on N physical random access channel opportunities from a set of N physical random access channel opportunities. This embodiment's technical solution ensures the time interval for switching between different transmission beams through a first offset and / or a second offset, thereby reserving sufficient time for the terminal device to perform multiple physical random access channel transmissions on different transmission beams. Based on this embodiment's technical solution, the switching time interval between different beam transmissions can be guaranteed, and / or the transmission of physical random access channels for different beams can be realized.

[0412] Fifth embodiment

[0413] Based on any of the above embodiments of this application, a fifth embodiment of this application is proposed, which further discloses a method for sending a random access preamble.

[0414] This embodiment proposes a solution whereby the terminal device transmits a random access preamble based on at least one physical random access channel timing from at least one set of physical random access channel timings. Through this solution, the terminal device can support multiple physical random access channel transmission mechanisms with different transmit beams, thereby improving random access performance.

[0415] Optionally, the terminal device transmits a random access preamble based on at least one physical random access channel opportunity from at least one set of physical random access channel opportunities. Specifically, the terminal device transmits a random access preamble based on a first number of physical random access channel opportunities from a set of N physical random access channel opportunities.

[0416] Optionally, N represents the number of different transmission beams.

[0417] Optionally, the first number is related to N and / or L.

[0418] Optionally, the first number is equal to N*L.

[0419] Optionally, L is the number of times the preamble of the same beam is repeated.

[0420] Optionally, N and L are positive integers.

[0421] Optionally, N and / or L are configured by system message 1 and / or radio resource control information.

[0422] Optionally, the physical random access channel timing is the effective physical random access channel timing for physical random access channel transmission of different transmit beams.

[0423] Optionally, different spatial filters correspond to different transmission beams.

[0424] Optionally, the terminal device transmits a random access preamble based on a first number of physical random access channel opportunities from a set of N physical random access channel opportunities. Specifically, the terminal device transmits random access preambles with different transmit beams on the first number of valid physical random access channel opportunities from the set of N physical random access channel opportunities.

[0425] Optionally, the terminal device transmits random access preambles with different transmit beams on the first number of valid physical random access channel opportunities within the set of N physical random access channel opportunities. Specifically, the terminal device uses different spatial filters to transmit the random access preambles on the first number of valid physical random access channel opportunities within the set of N physical random access channel opportunities.

[0426] Optionally, L valid physical random access channel opportunities of a physical random access channel opportunity set lie within a time period.

[0427] Optionally, the N physical random access channel timing sets lie within a time period.

[0428] Optionally, the first number of valid physical random access channel opportunities in the set of N physical random access channel opportunities lie within a time period.

[0429] Optionally, the effective physical random access channel timing for different transmit beams is associated with the same at least one synchronization signal block index.

[0430] Optionally, the first number of valid physical random access channel opportunities in the set of N physical random access channel opportunities are associated with the same at least one synchronization signal block index.

[0431] Optionally, the effective physical random access channel timing for different transmit beams is associated with the same preamble index.

[0432] Optionally, the first number of valid physical random access channel opportunities in the set of N physical random access channel opportunities are associated with the same preamble index.

[0433] Optionally, the effective physical random access channel timing for different transmit beams is associated with different preamble indices.

[0434] Optionally, the first number of valid physical random access channel opportunities in the set of N physical random access channel opportunities are associated with different preamble indices.

[0435] Optionally, the first number of valid physical random access channel opportunities in the set of N physical random access channel opportunities use the same frequency domain resources.

[0436] Optionally, at least two of the N physical random access channel timing sets use different frequency domain resources.

[0437] Optionally, if the number of frequency-division multiplexed physical random access channel opportunities in a time instance is greater than 1, then at least two of the N physical random access channel opportunity sets use different frequency domain resources.

[0438] Optionally, if the number of frequency-division multiplexed physical random access channel opportunities in a time instance is equal to 1, then at least two physical random access channel opportunity sets in the N physical random access channel opportunity sets use the same frequency domain resources.

[0439] Optionally, the number of physical random access channel opportunities for frequency division multiplexing in a time instance is configured by system message 1 and / or radio resource control information.

[0440] Optionally, a physical random access channel timing set includes L valid physical random access channel timings that are consecutive in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization block index, and each synchronization block index is associated with the same preamble index in the valid physical random access channel timings of the physical random access channel timing set.

[0441] Optionally, if, within a time period, after the first valid physical random access channel opportunity in a physical random access channel opportunity set, the number of remaining valid physical random access channel opportunities is less than L-1, then the physical random access channel opportunities in that physical random access channel opportunity set are invalid physical random access channel opportunities.

[0442] Optionally, the set of physical random access channel opportunities within a time period satisfies at least one of the following:

[0443] The first valid physical random access channel opportunity in the first set of physical random access channel opportunities is the first valid physical random access channel opportunity within the time period;

[0444] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity of each subsequent set of physical random access channel opportunities is located after the first valid physical random access channel opportunity of the previous set of physical random access channel opportunities, and is offset by the first consecutive valid physical random access channel opportunities in the time domain.

[0445] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity of each subsequent set of physical random access channel opportunities is located after the first valid physical random access channel opportunity of the previous set of physical random access channel opportunities, and is offset by the second consecutive time slot in the time domain.

[0446] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity in each subsequent set of physical random access channel opportunities is first sorted in ascending order by the frequency domain resource index of the frequency division multiplexing physical random access channel opportunity, and then sorted in ascending order by the time domain resource index of the time division multiplexing physical random access channel opportunity.

[0447] Optionally, for each frequency domain resource index of the physical random access channel timing for frequency division multiplexing, the first valid physical random access channel timing of the first physical random access channel timing set is the first valid physical random access channel timing under that frequency domain resource index.

[0448] Optionally, the physical random access channel timings of different transmit beams are offset in the time domain by a first consecutive set of valid physical random access channel timings between two adjacent physical random access channel timing sets.

[0449] Optionally, the physical random access channel timings of different transmit beams are offset by a second consecutive time slot in the time domain between two adjacent physical random access channel timing sets.

[0450] Optionally, the first offset and / or the second offset are positive integers.

[0451] Optionally, the first offset and / or the second offset are configured by system messages and / or radio resource control information.

[0452] Optionally, the number of actual transmitted synchronization signal blocks and the index of the actual transmitted synchronization signal blocks are configured by system message 1 and / or radio resource control information.

[0453] Optionally, as shown in Figure 9, the number of actual transmitted synchronization signal blocks is set to 2, and the indexes of the actual transmitted synchronization signal blocks are 0 and 1 (that is, the actual transmitted synchronization signal blocks are SSB 0 and SSB 1).

[0454] Optionally, if the number of physical random access channel opportunities (PRANs) in a time instance is 1 (i.e., the number of PRANs in the frequency domain in a time instance is 1), and one SSB is associated with one PRAN, the number of different transmit beams N is 2, and the number of repetitions L of the preamble of the same beam is 2, then two PRANs associated with the same synchronization signal block in the time domain constitute a set of PRANs. For example, the two PRANs of synchronization signal block 0 (shaded by the left diagonal line in Figure 9) constitute a set of PRANs; the two PRANs of synchronization signal block 0 (shaded by the horizontal line in Figure 9) constitute a set of PRANs.

[0455] Optionally, if the physical random access channel timings of different transmit beams belong to two adjacent physical random access channel timing sets, and there is a first offset consecutive valid physical random access channel timing in the time domain, and the number of different transmit beams N is 2, and the N physical random access channel timing sets use the same frequency domain resources, then the terminal device selects N*L=4 physical random access channel timings from these two physical random access channel timing sets for two different transmit beam physical random access channel transmissions.

[0456] Optionally, the left diagonal shaded area in Figure 9 is used for the two repeated transmissions of beam 1; the horizontal shaded area in Figure 9 is used for the two repeated transmissions of beam 2.

[0457] Alternatively, for paired spectrum or supplemental uplink bands, all physical random access channel opportunities are valid physical random access channel opportunities.

[0458] Optionally, for unpaired spectrum, if a terminal device in a cell is not configured with a second parameter, and the physical random access channel timing of the cell is not earlier than the synchronization signal block in the same physical random access channel time slot, and there is at least an interval of Ngap symbols after the last synchronization signal block is received, then the physical random access channel timing of the cell in that physical random access channel time slot is a valid physical random access channel timing.

[0459] Optionally, for unpaired spectrum, if a terminal device in a cell is configured with a second parameter, and the physical random access channel timing of the cell is only located within the uplink symbol and no earlier than the synchronization signal block within the same physical random access channel time slot, and is at least Ngap symbols after the last downlink symbol and / or the last synchronization signal block, then the physical random access channel timing of the cell within that physical random access channel time slot is a valid physical random access channel timing.

[0460] Optionally, the values ​​for Ngap are shown in Table 1.

[0461] Optionally, the second parameter is the tdd-UL-DL-ConfigurationCommon parameter.

[0462] Optionally, the second parameter is configured by system message 1 and / or radio resource control information.

[0463] Optionally, the physical random access channel timing does not include the physical random access channel timing in the subband full-duplex symbols.

[0464] Optionally, the physical random access channel timing does not include physical random access channel timing for physical random access channel time-domain adaptation.

[0465] Optionally, the effective physical random access channel timings for physical random access channel transmissions for different transmit beams do not include the effective physical random access channel timings in subband full-duplex symbols.

[0466] Optionally, the effective physical random access channel timings for physical random access channel transmissions for different transmit beams do not include the physical random access channel timings configured by the higher-layer parameter addl-RACH-Config-Adaptation.

[0467] Optionally, addl-RACH-Config-Adaptation is configured by System Message 1 and / or Radio Resource Control information.

[0468] Optionally, the association period refers to a period starting from frame 0 used to map the synchronization signal block index to the physical random access channel timing.

[0469] Optionally, the association period is the smallest integer value in the set determined by the physical random access channel configuration period in Table 2, and it is required that within one association period, the index of the actual transmitted synchronization signal block is mapped to the physical random access channel timing at least once.

[0470] Optionally, if, within an association period, after a number of integer cycles of mapping synchronization block indices to physical random access channel timings, there is still a set of physical random access channel timings or physical random access channel preambles that have not been mapped to at least one synchronization block index, then these physical random access channel timings or preambles will not be assigned any synchronization block index.

[0471] Optionally, the association mode period includes one or more association periods, and the mapping pattern between the physical random access channel timing and the synchronization signal block index is repeated at most once every 160 milliseconds within an association mode period.

[0472] Optionally, if there are still physical random access channel opportunities not associated with the synchronization signal block index after a certain number of associated periods, these opportunities will not be used for physical random access channel transmission.

[0473] Through the technical solution of this embodiment, the terminal device transmits a random access preamble based on at least one valid physical random access channel (PRAM) opportunity from at least one set of PRAM opportunities. Specifically, the terminal device transmits N random access preambles for different transmit beams on a first number of PRAM opportunities from a set of N PRAM opportunities. Compared to the fourth embodiment, this embodiment can determine resources for the terminal device to support multiple PRAM transmissions for different transmit beams while maintaining repeated transmission of the same beam. And / or, this embodiment can also guarantee the time interval for switching between different transmit beams through a first offset and / or a second offset, thereby reserving sufficient time for the terminal device to perform multiple PRAM transmissions on different transmit beams. Based on this embodiment, the switching time interval between different beam transmissions can be guaranteed, and / or the transmission of PRAMs for different beams can be realized, and / or the repeated transmission of the same beam can be guaranteed, and / or the robustness of PRAM transmission can be improved.

[0474] Sixth Embodiment

[0475] Referring to Figure 10, which is a flowchart illustrating the transmission method of the sixth embodiment of this application, the transmission method of this embodiment can be applied to network devices (such as base stations), and includes step S2:

[0476] Step S2: The network device receives a random access preamble, which is sent by the terminal device based on at least one physical random access channel timing from at least one set of physical random access channel timings.

[0477] Through the technical solution of this embodiment, the terminal device can support multiple physical random access channel transmission mechanisms with different transmission beams, thereby improving random access performance.

[0478] Optionally, the random access preamble is sent from the terminal device to the network device.

[0479] Alternatively, network equipment may be base stations, etc.

[0480] Optionally, the terminal device transmits a random access preamble based on at least one physical random access channel timing from at least one set of physical random access channel timings, including at least one of the following:

[0481] The terminal device sends a random access preamble based on N physical random access channel opportunities from a set of physical random access channel opportunities;

[0482] The terminal device sends a random access preamble based on the first number of physical random access channel opportunities in the set of N physical random access channel opportunities.

[0483] The terminal device sends a random access preamble based on the N physical random access channel timings of the N physical random access channel timing set.

[0484] Optionally, the first number is related to N and / or L.

[0485] Optionally, the first number is equal to N*L.

[0486] Optionally, N represents the number of different transmission beams.

[0487] Optionally, L is the number of times the preamble of the same beam is repeated.

[0488] Optionally, N and L are positive integers.

[0489] Optionally, N and / or L are configured by system message 1 and / or radio resource control information.

[0490] Optionally, the physical random access channel timing is the effective physical random access channel timing for physical random access channel transmission of different transmit beams.

[0491] Optionally, different transmit beams correspond to different space filters.

[0492] Optionally, the terminal device transmits a random access preamble based on N physical random access channel opportunities within a set of physical random access channel opportunities. Specifically, the terminal device transmits random access preambles with different transmit beams on N valid physical random access channel opportunities within a set of physical random access channel opportunities.

[0493] Optionally, the terminal device transmits random access preambles with different transmit beams on N valid physical random access channel opportunities within a set of physical random access channel opportunities. Specifically, the terminal device uses different spatial filters to transmit the random access preambles on the N valid physical random access channel opportunities within this set of physical random access channel opportunities.

[0494] Optionally, the terminal device transmits a random access preamble based on a first number of physical random access channel opportunities from a set of N physical random access channel opportunities. Specifically, the terminal device transmits random access preambles with different transmit beams on the first number of valid physical random access channel opportunities from the set of N physical random access channel opportunities.

[0495] Optionally, the terminal device transmits random access preambles with different transmit beams on the first number of valid physical random access channel opportunities within the set of N physical random access channel opportunities. Specifically, the terminal device uses different spatial filters to transmit the random access preambles on the first number of valid physical random access channel opportunities within the set of N physical random access channel opportunities.

[0496] Optionally, the terminal device transmits a random access preamble based on N physical random access channel opportunities from the set of N physical random access channel opportunities. Specifically, the terminal device transmits random access preambles with different transmit beams on N valid physical random access channel opportunities from the set of N physical random access channel opportunities.

[0497] Optionally, the terminal device transmits random access preambles with different transmit beams on N valid physical random access channel opportunities out of the N physical random access channel opportunity set. Specifically, the terminal device uses different spatial filters to transmit the random access preambles on the N valid physical random access channel opportunities out of the N physical random access channel opportunity set.

[0498] Optionally, the N physical random access channel opportunities in the N physical random access channel opportunity set are the Xth valid physical random access channel opportunity in each physical random access channel opportunity set in the N physical random access channel opportunity set.

[0499] Optionally, X is less than or equal to the number of repetitions of the preamble of the same beam.

[0500] Optionally, X is a positive integer.

[0501] Optionally, X is configured by system message 1 and / or radio resource control information.

[0502] Optionally, the N physical random access channel opportunities in the N physical random access channel opportunity sets are the Xth valid physical random access channel opportunity in each of the N physical random access channel opportunity sets. Specifically, when X is 1, the N physical random access channel opportunities in the N physical random access channel opportunity sets are the 1st valid physical random access channel opportunity in each of the N physical random access channel opportunity sets.

[0503] Optionally, the first number of valid physical random access channel opportunities in the set of N physical random access channel opportunities use the same frequency domain resources.

[0504] Optionally, the N physical random access channel opportunities in the set of N physical random access channel opportunities use the same frequency domain resources.

[0505] Optionally, if the number of frequency-division multiplexed physical random access channel opportunities in a time instance is greater than 1, then at least two of the N physical random access channel opportunity sets use different frequency domain resources.

[0506] Optionally, if the number of frequency-division multiplexed physical random access channel opportunities in a time instance is equal to 1, then at least two physical random access channel opportunity sets in the N physical random access channel opportunity sets use the same frequency domain resources.

[0507] Optionally, the number of physical random access channel opportunities for frequency division multiplexing in a time instance is configured by system message 1 and / or radio resource control information.

[0508] Optionally, N valid physical random access channel opportunities of a physical random access channel opportunity set lie within a time period.

[0509] Optionally, L valid physical random access channel opportunities of a physical random access channel opportunity set lie within a time period.

[0510] Optionally, the N physical random access channel timing sets lie within a time period.

[0511] Optionally, the effective physical random access channel timing for different transmit beams is associated with the same at least one synchronization signal block index.

[0512] Optionally, the effective physical random access channel timing for different transmit beams is associated with the same preamble index.

[0513] Optionally, the effective physical random access channel timing for different transmit beams is associated with different preamble indices.

[0514] Optionally, the number of synchronization signal block indices associated with the physical random access channel timing is configured by system message 1 and / or radio resource control information.

[0515] Optionally, if the number of synchronization block indices associated with a physical random access channel opportunity is 1, then the effective physical random access channel opportunities of different transmit beams are associated with the same synchronization block index; specifically, if the number of synchronization block indices associated with a physical random access channel opportunity is P, then the effective physical random access channel opportunities of different transmit beams are associated with the same P synchronization block indices.

[0516] Optionally, P is a positive integer.

[0517] Optionally, a physical random access channel timing set includes N valid physical random access channel timings that are consecutive in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization signal block index, and each synchronization signal block index is associated with the same preamble index in the valid physical random access channel timings of the physical random access channel timing set.

[0518] Optionally, a physical random access channel timing set includes N valid physical random access channel timings that are continuous in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization signal block index, and each valid physical random access channel timing in the physical random access channel timing set is associated with a different preamble index, and at least two valid physical random access channel timings in the physical random access channel timing set are associated with different preamble indices.

[0519] Optionally, a physical random access channel timing set includes L valid physical random access channel timings that are consecutive in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization block index, and each synchronization block index is associated with the same preamble index in the valid physical random access channel timings of the physical random access channel timing set.

[0520] Optionally, if, within a time period, after the first valid physical random access channel opportunity in a set of physical random access channel opportunities, the number of remaining valid physical random access channel opportunities is less than N-1, then the physical random access channel opportunities in that set of physical random access channel opportunities are invalid physical random access channel opportunities.

[0521] Optionally, if, within a time period, after the first valid physical random access channel opportunity in a physical random access channel opportunity set, the number of remaining valid physical random access channel opportunities is less than L-1, then the physical random access channel opportunities in that physical random access channel opportunity set are invalid physical random access channel opportunities.

[0522] Optionally, the set of physical random access channel opportunities within a time period satisfies at least one of the following:

[0523] The first valid physical random access channel opportunity in the first set of physical random access channel opportunities is the first valid physical random access channel opportunity within the time period;

[0524] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity of each subsequent set of physical random access channel opportunities is located after the first valid physical random access channel opportunity of the previous set of physical random access channel opportunities, and is offset by the first consecutive valid physical random access channel opportunities in the time domain.

[0525] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity of each subsequent set of physical random access channel opportunities is located after the first valid physical random access channel opportunity of the previous set of physical random access channel opportunities, and is offset by the second consecutive time slot in the time domain.

[0526] If the first parameter is configured, then after the first physical random access channel timing set, the first valid physical random access channel timing of each subsequent physical random access channel timing set is located after the first valid physical random access channel timing of the previous physical random access channel timing set, and is offset in the time domain by the first parameter consecutive valid physical random access channel timings.

[0527] If the first parameter is not configured, then after the first physical random access channel timing set, the first valid physical random access channel timing of each subsequent physical random access channel timing set is located after the physical random access channel timing of the previous physical random access channel timing set.

[0528] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity in each subsequent set of physical random access channel opportunities is first sorted in ascending order by the frequency domain resource index of the frequency division multiplexing physical random access channel opportunity, and then sorted in ascending order by the time domain resource index of the time division multiplexing physical random access channel opportunity.

[0529] Optionally, the first offset and / or the second offset are positive integers.

[0530] Optionally, the first offset and / or the second offset are configured by system messages and / or radio resource control information.

[0531] Optionally, the first parameter is the msg1-RepetitionTimeOffsetROGroup parameter.

[0532] Optionally, the first parameter is configured by system message 1 and / or radio resource control information.

[0533] Optionally, for each frequency domain resource index of the physical random access channel timing for frequency division multiplexing, the first valid physical random access channel timing of the first physical random access channel timing set is the first valid physical random access channel timing under that frequency domain resource index.

[0534] Alternatively, for paired spectrum or supplemental uplink bands, all physical random access channel opportunities are valid physical random access channel opportunities.

[0535] Optionally, for unpaired spectrum, if a terminal device in a cell is not configured with a second parameter, and the physical random access channel timing of the cell is not earlier than the synchronization signal block in the same physical random access channel time slot, and there is at least an interval of Ngap symbols after the last synchronization signal block is received, then the physical random access channel timing of the cell in that physical random access channel time slot is a valid physical random access channel timing.

[0536] Optionally, for unpaired spectrum, if a terminal device in a cell is configured with a second parameter, and the physical random access channel timing of the cell is only located within the uplink symbol and no earlier than the synchronization signal block within the same physical random access channel time slot, and is at least Ngap symbols after the last downlink symbol and / or the last synchronization signal block, then the physical random access channel timing of the cell within that physical random access channel time slot is a valid physical random access channel timing.

[0537] Optionally, the second parameter is the tdd-UL-DL-ConfigurationCommon parameter.

[0538] Optionally, the second parameter is configured by system message 1 and / or radio resource control information.

[0539] Optionally, the values ​​for Ngap are shown in Table 1.

[0540] Optionally, the physical random access channel timing does not include the physical random access channel timing in the subband full-duplex symbols.

[0541] Optionally, the physical random access channel timing does not include physical random access channel timing for physical random access channel time-domain adaptation.

[0542] Optionally, the effective physical random access channel timings for physical random access channel transmissions for different transmit beams do not include the effective physical random access channel timings in subband full-duplex symbols.

[0543] Optionally, the effective physical random access channel timings for physical random access channel transmissions for different transmit beams do not include the physical random access channel timings configured by the higher-layer parameter addl-RACH-Config-Adaptation.

[0544] Optionally, addl-RACH-Config-Adaptation is configured by System Message 1 and / or Radio Resource Control information.

[0545] Optionally, the association period refers to a period starting from frame 0 used to map the synchronization signal block index to the physical random access channel timing.

[0546] Optionally, the association period is the smallest integer value in the set determined by the physical random access channel configuration period in Table 2, and it is required that within one association period, the index of the actual transmitted synchronization signal block is mapped to the physical random access channel timing at least once.

[0547] Optionally, if, within an association period, after a number of integer cycles of mapping synchronization block indices to physical random access channel timings, there is still a set of physical random access channel timings or physical random access channel preambles that have not been mapped to at least one synchronization block index, then these physical random access channel timings or preambles will not be assigned any synchronization block index.

[0548] Optionally, the association mode period includes one or more association periods, and the mapping pattern between the physical random access channel timing and the synchronization signal block index is repeated at most once every 160 milliseconds within an association mode period.

[0549] Optionally, if there are still physical random access channel opportunities not associated with the synchronization signal block index after a certain number of associated periods, these opportunities will not be used for physical random access channel transmission.

[0550] Through the technical solution of this embodiment, the network device receives a random access preamble. The preamble is sent by the terminal device based on at least one physical random access channel timing from at least one set of physical random access channel timings. Based on the technical solution of this embodiment, the terminal device can perform multiple physical random access channel transmissions on different transmission beams, thereby supporting improved random access performance.

[0551] Seventh Embodiment

[0552] Referring to Figure 11, which is a schematic diagram of the interaction flow between a network device and a terminal device according to the seventh embodiment of the transmission method, the seventh embodiment of this application proposes a transmission method including steps S1 and S2:

[0553] Step S1: The terminal device sends a random access preamble based on at least one physical random access channel timing from at least one physical random access channel timing set;

[0554] Step S2: The network device receives a random access preamble, which is sent by the terminal device based on at least one physical random access channel timing from at least one set of physical random access channel timings.

[0555] Through the technical solution of this embodiment, the terminal device can support multiple physical random access channel transmission mechanisms with different transmission beams, thereby improving random access performance.

[0556] Optionally, the random access preamble is sent from the terminal device to the network device.

[0557] Alternatively, network equipment may be base stations, etc.

[0558] Optionally, the terminal device transmits a random access preamble based on at least one physical random access channel timing from at least one set of physical random access channel timings, including at least one of the following:

[0559] The terminal device sends a random access preamble based on N physical random access channel opportunities from a set of physical random access channel opportunities;

[0560] The terminal device sends a random access preamble based on the first number of physical random access channel opportunities in the set of N physical random access channel opportunities.

[0561] The terminal device sends a random access preamble based on the N physical random access channel timings of the N physical random access channel timing set.

[0562] Optionally, the first number is related to N and / or L.

[0563] Optionally, the first number is equal to N*L.

[0564] Optionally, N represents the number of different transmission beams.

[0565] Optionally, L is the number of times the preamble of the same beam is repeated.

[0566] Optionally, N and L are positive integers.

[0567] Optionally, N and / or L are configured by system message 1 and / or radio resource control information.

[0568] Optionally, the physical random access channel timing is the effective physical random access channel timing for physical random access channel transmission of different transmit beams.

[0569] Optionally, different transmit beams correspond to different space filters.

[0570] Optionally, the terminal device transmits a random access preamble based on N physical random access channel opportunities within a set of physical random access channel opportunities. Specifically, the terminal device transmits random access preambles with different transmit beams on N valid physical random access channel opportunities within a set of physical random access channel opportunities.

[0571] Optionally, the terminal device transmits random access preambles with different transmit beams on N valid physical random access channel opportunities within a set of physical random access channel opportunities. Specifically, the terminal device uses different spatial filters to transmit the random access preambles on the N valid physical random access channel opportunities within this set of physical random access channel opportunities.

[0572] Optionally, the terminal device transmits a random access preamble based on a first number of physical random access channel opportunities from a set of N physical random access channel opportunities. Specifically, the terminal device transmits random access preambles with different transmit beams on the first number of valid physical random access channel opportunities from the set of N physical random access channel opportunities.

[0573] Optionally, the terminal device transmits random access preambles with different transmit beams on the first number of valid physical random access channel opportunities within the set of N physical random access channel opportunities. Specifically, the terminal device uses different spatial filters to transmit the random access preambles on the first number of valid physical random access channel opportunities within the set of N physical random access channel opportunities.

[0574] Optionally, the terminal device transmits a random access preamble based on N physical random access channel opportunities from the set of N physical random access channel opportunities. Specifically, the terminal device transmits random access preambles with different transmit beams on N valid physical random access channel opportunities from the set of N physical random access channel opportunities.

[0575] Optionally, the terminal device transmits random access preambles with different transmit beams on N valid physical random access channel opportunities out of the N physical random access channel opportunity set. Specifically, the terminal device uses different spatial filters to transmit the random access preambles on the N valid physical random access channel opportunities out of the N physical random access channel opportunity set.

[0576] Optionally, the N physical random access channel opportunities in the N physical random access channel opportunity set are the Xth valid physical random access channel opportunity in each physical random access channel opportunity set in the N physical random access channel opportunity set.

[0577] Optionally, X is less than or equal to the number of repetitions of the preamble of the same beam.

[0578] Optionally, X is a positive integer.

[0579] Optionally, X is configured by system message 1 and / or radio resource control information.

[0580] Optionally, the N physical random access channel opportunities in the N physical random access channel opportunity sets are the Xth valid physical random access channel opportunity in each of the N physical random access channel opportunity sets. Specifically, when X is 1, the N physical random access channel opportunities in the N physical random access channel opportunity sets are the 1st valid physical random access channel opportunity in each of the N physical random access channel opportunity sets.

[0581] Optionally, the first number of valid physical random access channel opportunities in the set of N physical random access channel opportunities use the same frequency domain resources.

[0582] Optionally, the N physical random access channel opportunities in the set of N physical random access channel opportunities use the same frequency domain resources.

[0583] Optionally, if the number of frequency-division multiplexed physical random access channel opportunities in a time instance is greater than 1, then at least two of the N physical random access channel opportunity sets use different frequency domain resources.

[0584] Optionally, if the number of frequency-division multiplexed physical random access channel opportunities in a time instance is equal to 1, then at least two physical random access channel opportunity sets in the N physical random access channel opportunity sets use the same frequency domain resources.

[0585] Optionally, the number of physical random access channel opportunities for frequency division multiplexing in a time instance is allocated by system message 1 and / or radio resource control information.

[0586] Optionally, N valid physical random access channel opportunities of a physical random access channel opportunity set lie within a time period.

[0587] Optionally, L valid physical random access channel opportunities of a physical random access channel opportunity set lie within a time period.

[0588] Optionally, the N physical random access channel timing sets lie within a time period.

[0589] Optionally, the effective physical random access channel timing for different transmit beams is associated with the same at least one synchronization signal block index.

[0590] Optionally, the effective physical random access channel timing for different transmit beams is associated with the same preamble index.

[0591] Optionally, the effective physical random access channel timing for different transmit beams is associated with different preamble indices.

[0592] Optionally, the number of synchronization signal block indices associated with the physical random access channel timing is configured by system message 1 and / or radio resource control information.

[0593] Optionally, if the number of synchronization block indices associated with a physical random access channel opportunity is 1, then the effective physical random access channel opportunities of different transmit beams are associated with the same synchronization block index; specifically, if the number of synchronization block indices associated with a physical random access channel opportunity is P, then the effective physical random access channel opportunities of different transmit beams are associated with the same P synchronization block indices.

[0594] Optionally, P is a positive integer.

[0595] Optionally, a physical random access channel timing set includes N valid physical random access channel timings that are consecutive in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization signal block index, and each synchronization signal block index is associated with the same preamble index in the valid physical random access channel timings of the physical random access channel timing set.

[0596] Optionally, a physical random access channel timing set includes N valid physical random access channel timings that are continuous in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization signal block index, and at least two valid physical random access channel timings in the physical random access channel timing set are associated with different preamble indices.

[0597] Optionally, a physical random access channel timing set includes L valid physical random access channel timings that are consecutive in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization block index, and each synchronization block index is associated with the same preamble index in the valid physical random access channel timings of the physical random access channel timing set.

[0598] Optionally, if, within a time period, after the first valid physical random access channel opportunity in a set of physical random access channel opportunities, the number of remaining valid physical random access channel opportunities is less than N-1, then the physical random access channel opportunities in that set of physical random access channel opportunities are invalid physical random access channel opportunities.

[0599] Optionally, if, within a time period, after the first valid physical random access channel opportunity in a physical random access channel opportunity set, the number of remaining valid physical random access channel opportunities is less than L-1, then the physical random access channel opportunities in that physical random access channel opportunity set are invalid physical random access channel opportunities.

[0600] Optionally, the set of physical random access channel opportunities within a time period satisfies at least one of the following:

[0601] The first valid physical random access channel opportunity in the first set of physical random access channel opportunities is the first valid physical random access channel opportunity within the time period;

[0602] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity of each subsequent set of physical random access channel opportunities is located after the first valid physical random access channel opportunity of the previous set of physical random access channel opportunities, and is offset by the first consecutive valid physical random access channel opportunities in the time domain.

[0603] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity of each subsequent set of physical random access channel opportunities is located after the first valid physical random access channel opportunity of the previous set of physical random access channel opportunities, and is offset by the second consecutive time slot in the time domain.

[0604] If the first parameter is configured, then after the first physical random access channel timing set, the first valid physical random access channel timing of each subsequent physical random access channel timing set is located after the first valid physical random access channel timing of the previous physical random access channel timing set, and is offset in the time domain by the first parameter consecutive valid physical random access channel timings.

[0605] If the first parameter is not configured, then after the first physical random access channel timing set, the first valid physical random access channel timing of each subsequent physical random access channel timing set is located after the physical random access channel timing of the previous physical random access channel timing set.

[0606] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity in each subsequent set of physical random access channel opportunities is first sorted in ascending order by the frequency domain resource index of the frequency division multiplexing physical random access channel opportunity, and then sorted in ascending order by the time domain resource index of the time division multiplexing physical random access channel opportunity.

[0607] Optionally, the first offset and / or the second offset are positive integers.

[0608] Optionally, the first offset and / or the second offset are configured by system messages and / or radio resource control information.

[0609] Optionally, the first parameter is the msg1-RepetitionTimeOffsetROGroup parameter.

[0610] Optionally, the first parameter is configured by system message 1 and / or radio resource control information.

[0611] Optionally, for each frequency domain resource index of the physical random access channel timing for frequency division multiplexing, the first valid physical random access channel timing of the first physical random access channel timing set is the first valid physical random access channel timing under that frequency domain resource index.

[0612] Alternatively, for paired spectrum or supplemental uplink bands, all physical random access channel opportunities are valid physical random access channel opportunities.

[0613] Optionally, for unpaired spectrum, if a terminal device in a cell is not configured with a second parameter, and the physical random access channel timing of the cell is not earlier than the synchronization signal block in the same physical random access channel time slot, and there is at least an interval of Ngap symbols after the last synchronization signal block is received, then the physical random access channel timing of the cell in that physical random access channel time slot is a valid physical random access channel timing.

[0614] Optionally, for unpaired spectrum, if a terminal device in a cell is configured with a second parameter, and the physical random access channel timing of the cell is only located within the uplink symbol and no earlier than the synchronization signal block within the same physical random access channel time slot, and is at least Ngap symbols after the last downlink symbol and / or the last synchronization signal block, then the physical random access channel timing of the cell within that physical random access channel time slot is a valid physical random access channel timing.

[0615] Optionally, the second parameter is the tdd-UL-DL-ConfigurationCommon parameter.

[0616] Optionally, the second parameter is configured by system message 1 and / or radio resource control information.

[0617] Optionally, the values ​​for Ngap are shown in Table 1.

[0618] Optionally, the physical random access channel timing does not include the physical random access channel timing in the subband full-duplex symbols.

[0619] Optionally, the physical random access channel timing does not include physical random access channel timing for physical random access channel time-domain adaptation.

[0620] Optionally, the effective physical random access channel timings for physical random access channel transmissions for different transmit beams do not include the effective physical random access channel timings in subband full-duplex symbols.

[0621] Optionally, the effective physical random access channel timings for physical random access channel transmissions for different transmit beams do not include the physical random access channel timings configured by the higher-layer parameter addl-RACH-Config-Adaptation.

[0622] Optionally, addl-RACH-Config-Adaptation is configured by System Message 1 and / or Radio Resource Control information.

[0623] Optionally, the association period refers to a period starting from frame 0 used to map the synchronization signal block index to the physical random access channel timing.

[0624] Optionally, the association period is the smallest integer value in the set determined by the physical random access channel configuration period in Table 2, and it is required that within one association period, the index of the actual transmitted synchronization signal block is mapped to the physical random access channel timing at least once.

[0625] Optionally, if, within an association period, after a number of integer cycles of mapping synchronization block indices to physical random access channel timings, there is still a set of physical random access channel timings or physical random access channel preambles that have not been mapped to at least one synchronization block index, then these physical random access channel timings or preambles will not be assigned any synchronization block index.

[0626] Optionally, the association mode period includes one or more association periods, and the mapping pattern between the physical random access channel timing and the synchronization signal block index is repeated at most once every 160 milliseconds within an association mode period.

[0627] Optionally, if there are still physical random access channel opportunities not associated with the synchronization signal block index after a certain number of associated periods, these opportunities will not be used for physical random access channel transmission.

[0628] Through the technical solution of this embodiment, the terminal device sends a random access preamble based on at least one valid physical random access channel timing from at least one set of physical random access channel timings, and the network device receives the random access preamble. Based on the technical solution of this embodiment, the terminal device can perform multiple physical random access channel transmissions on different transmission beams, thereby supporting improved random access performance.

[0629] Eighth embodiment

[0630] Please refer to Figure 12, which is a schematic diagram of the structure of a transmission device provided in an embodiment of this application. This device can be mounted on or is the terminal device in the above-described method embodiments. The transmission device shown in Figure 12 can be used to perform some or all of the functions described in the above-described method embodiments. As shown in Figure 12, the transmission device 160 includes:

[0631] The transmitting module 1601 is used to transmit a random access preamble based on at least one physical random access channel timing from at least one set of physical random access channel timings.

[0632] Optionally, transmitting a random access preamble based on at least one physical random access channel timing from at least one set of physical random access channel timings includes at least one of the following:

[0633] The random access preamble is transmitted based on N physical random access channel opportunities of a physical random access channel opportunity set.

[0634] The random access preamble is sent based on the first number of physical random access channel opportunities of the N physical random access channel opportunity set.

[0635] The random access preamble is transmitted based on the N physical random access channel timings of the N physical random access channel timing set.

[0636] Optionally, the transmission device further includes at least one of the following:

[0637] The physical random access channel timing is the effective physical random access channel timing used for physical random access channel transmission of different transmit beams;

[0638] The N physical random access channel opportunities in the N physical random access channel opportunity set are the Xth valid physical random access channel opportunity in each physical random access channel opportunity set in the N physical random access channel opportunity set.

[0639] The first number of valid physical random access channel opportunities in a set of N physical random access channel opportunities use the same frequency domain resources;

[0640] N physical random access channel opportunities in a set of N physical random access channel opportunities use the same frequency domain resources;

[0641] If the number of frequency division multiplexing physical random access channel opportunities in a time instance is greater than 1, then at least two of the N physical random access channel opportunity sets use different frequency domain resources.

[0642] If the number of physical random access channel opportunities for frequency division multiplexing in a time instance is equal to 1, then at least two physical random access channel opportunity sets in the N physical random access channel opportunity sets use the same frequency domain resources.

[0643] Optionally, the transmission device further includes at least one of the following:

[0644] The effective physical random access channel timing for different transmit beams is associated with at least one synchronization signal block index;

[0645] The effective physical random access channel timings for different transmit beams are associated with the same preamble index;

[0646] The effective physical random access channel timing for different transmit beams is associated with different preamble indices;

[0647] N valid physical random access channel opportunities in a set of physical random access channel opportunities lie within a time period;

[0648] A set of physical random access channel opportunities contains L valid physical random access channel opportunities within a time period;

[0649] N physical random access channel opportunity sets are located within a time period;

[0650] N represents the number of different transmission beams;

[0651] X is less than or equal to the number of times the preamble is repeated in the same beam.

[0652] Optionally, the set of physical random access channel opportunities within a time period satisfies at least one of the following:

[0653] The first valid physical random access channel opportunity in the first set of physical random access channel opportunities is the first valid physical random access channel opportunity within the time period;

[0654] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity of each subsequent set of physical random access channel opportunities is located after the first valid physical random access channel opportunity of the previous set of physical random access channel opportunities, and is offset by the first consecutive valid physical random access channel opportunities in the time domain.

[0655] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity of each subsequent set of physical random access channel opportunities is located after the first valid physical random access channel opportunity of the previous set of physical random access channel opportunities, and is offset by the second consecutive time slot in the time domain.

[0656] If the first parameter is configured, then after the first physical random access channel timing set, the first valid physical random access channel timing of each subsequent physical random access channel timing set is located after the first valid physical random access channel timing of the previous physical random access channel timing set, and is offset in the time domain by the first parameter consecutive valid physical random access channel timings.

[0657] If the first parameter is not configured, then after the first physical random access channel timing set, the first valid physical random access channel timing of each subsequent physical random access channel timing set is located after the physical random access channel timing of the previous physical random access channel timing set.

[0658] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity in each subsequent set of physical random access channel opportunities is first sorted in ascending order by the frequency domain resource index of the frequency division multiplexing physical random access channel opportunity, and then sorted in ascending order by the time domain resource index of the time division multiplexing physical random access channel opportunity.

[0659] Optionally, the transmission device further includes at least one of the following:

[0660] A physical random access channel timing set includes N valid physical random access channel timings that are consecutive in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization signal block index, and each synchronization signal block index is associated with the same preamble index in the valid physical random access channel timings of the physical random access channel timing set.

[0661] A physical random access channel timing set includes N valid physical random access channel timings that are continuous in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization signal block index, and at least two valid physical random access channel timings in the physical random access channel timing set are associated with different preamble indices.

[0662] A physical random access channel timing set includes L valid physical random access channel timings that are consecutive in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization block index, and each synchronization block index is associated with the same preamble index in the valid physical random access channel timings of the physical random access channel timing set.

[0663] If, within a time period, after the first valid physical random access channel opportunity in a set of physical random access channel opportunities, the number of remaining valid physical random access channel opportunities is less than N-1, then the physical random access channel opportunities in that set of physical random access channel opportunities are invalid physical random access channel opportunities.

[0664] If, within a time period, after the first valid physical random access channel opportunity in a set of physical random access channel opportunities, the number of remaining valid physical random access channel opportunities is less than L-1, then the physical random access channel opportunities in that set of physical random access channel opportunities are invalid physical random access channel opportunities.

[0665] L is the number of times the preamble of the same beam is repeated;

[0666] N, X, and L are positive integers;

[0667] The first number is related to N and / or L.

[0668] The transmission device provided in this application embodiment is similar in implementation principle and beneficial effect to the technical solution shown in the corresponding method embodiment above, and will not be described again here.

[0669] Ninth Embodiment

[0670] Please refer to Figure 13. Figure 13 is a second schematic diagram of the structure of the transmission device provided in the embodiment of this application. This device can be mounted on or is the network device in the above method embodiment. The transmission device shown in Figure 13 can be used to perform some or all of the functions in the method embodiment described above. As shown in Figure 13, the device 170 includes:

[0671] The receiving module 1701 is used to receive a random access preamble, which is sent by the terminal device based on at least one physical random access channel timing from at least one set of physical random access channel timings.

[0672] Optionally, the terminal device transmits a random access preamble based on at least one physical random access channel timing from at least one set of physical random access channel timings, including at least one of the following:

[0673] The terminal device sends a random access preamble based on N physical random access channel opportunities from a set of physical random access channel opportunities;

[0674] The terminal device sends a random access preamble based on the first number of physical random access channel opportunities in the set of N physical random access channel opportunities.

[0675] The terminal device sends a random access preamble based on the N physical random access channel timings of the N physical random access channel timing set.

[0676] Optionally, the transmission device further includes at least one of the following:

[0677] The physical random access channel timing is the effective physical random access channel timing used for physical random access channel transmission of different transmit beams;

[0678] The N physical random access channel opportunities in the N physical random access channel opportunity set are the Xth valid physical random access channel opportunity in each physical random access channel opportunity set in the N physical random access channel opportunity set.

[0679] The first number of valid physical random access channel opportunities in a set of N physical random access channel opportunities use the same frequency domain resources;

[0680] N physical random access channel opportunities in a set of N physical random access channel opportunities use the same frequency domain resources;

[0681] N physical random access channel timing sets use different frequency domain resources;

[0682] If the number of frequency division multiplexing physical random access channel opportunities in a time instance is greater than 1, then at least two of the N physical random access channel opportunity sets use different frequency domain resources.

[0683] If the number of physical random access channel opportunities for frequency division multiplexing in a time instance is equal to 1, then at least two physical random access channel opportunity sets in the N physical random access channel opportunity sets use the same frequency domain resources.

[0684] Optionally, the transmission device further includes at least one of the following:

[0685] The effective physical random access channel timing for different transmit beams is associated with at least one synchronization signal block index;

[0686] The effective physical random access channel timings for different transmit beams are associated with the same preamble index;

[0687] The effective physical random access channel timing for different transmit beams is associated with different preamble indices;

[0688] N physical random access channel opportunity sets are located within a time period;

[0689] N valid physical random access channel opportunities in a set of physical random access channel opportunities lie within a time period;

[0690] A set of physical random access channel opportunities has L valid physical random access channel opportunities within a time period.

[0691] N physical random access channel opportunity sets are located within a time period;

[0692] N represents the number of different transmission beams;

[0693] X is less than or equal to the number of times the preamble is repeated in the same beam.

[0694] Optionally, the set of physical random access channel opportunities within a time period satisfies at least one of the following:

[0695] The first valid physical random access channel opportunity in the first set of physical random access channel opportunities is the first valid physical random access channel opportunity within the time period;

[0696] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity of each subsequent set of physical random access channel opportunities is located after the first valid physical random access channel opportunity of the previous set of physical random access channel opportunities, and is offset by the first consecutive valid physical random access channel opportunities in the time domain.

[0697] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity of each subsequent set of physical random access channel opportunities is located after the first valid physical random access channel opportunity of the previous set of physical random access channel opportunities, and is offset by the second consecutive time slot in the time domain.

[0698] If the first parameter is configured, then after the first physical random access channel timing set, the first valid physical random access channel timing of each subsequent physical random access channel timing set is located after the first valid physical random access channel timing of the previous physical random access channel timing set, and is offset in the time domain by the first parameter consecutive valid physical random access channel timings.

[0699] If the first parameter is not configured, then after the first physical random access channel timing set, the first valid physical random access channel timing of each subsequent physical random access channel timing set is located after all physical random access channel timings of the previous physical random access channel timing set.

[0700] After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity in each subsequent set of physical random access channel opportunities is first sorted in ascending order by the frequency domain resource index of the frequency division multiplexing physical random access channel opportunity, and then sorted in ascending order by the time domain resource index of the time division multiplexing physical random access channel opportunity.

[0701] Optionally, the transmission device further includes at least one of the following:

[0702] A physical random access channel timing set includes N valid physical random access channel timings that are continuous in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization signal block index, and each synchronization signal block index is associated with the same preamble index in the valid physical random access channel timings of the physical random access channel timing set.

[0703] A physical random access channel timing set includes N valid physical random access channel timings that are continuous in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization signal block index, and at least two valid physical random access channel timings in the physical random access channel timing set are associated with different preamble indices.

[0704] A physical random access channel timing set includes L valid physical random access channel timings that are consecutive in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization block index, and each synchronization block index is associated with the same preamble index in the valid physical random access channel timings of the physical random access channel timing set.

[0705] If, within a time period, after the first valid physical random access channel opportunity in a set of physical random access channel opportunities, the number of remaining valid physical random access channel opportunities is less than N-1, then the physical random access channel opportunities in that set of physical random access channel opportunities are invalid physical random access channel opportunities.

[0706] If, within a time period, after the first valid physical random access channel opportunity in a set of physical random access channel opportunities, the number of remaining valid physical random access channel opportunities is less than L-1, then the physical random access channel opportunities in that set of physical random access channel opportunities are invalid physical random access channel opportunities.

[0707] L is the number of times the preamble of the same beam is repeated;

[0708] N, X, and L are positive integers;

[0709] The first number is related to N and / or L.

[0710] The transmission device provided in this application embodiment is similar in implementation principle and beneficial effect to the technical solution shown in the corresponding method embodiment above, and will not be described again here.

[0711] Referring to Figure 14, which is a schematic diagram of the structure of a communication device provided in an embodiment of this application, the communication device 180 described in this embodiment may be a terminal device (or a component that can be used in a terminal device) or a network device (or a component that can be used in a network device) mentioned in the foregoing method embodiments. The communication device 180 can be used to implement the methods corresponding to the terminal device or network device described in the above method embodiments, as detailed in the descriptions in the above method embodiments.

[0712] The communication device 180 may include one or more processors 1801, which may also be referred to as processing units, and can perform certain control or processing functions. The processor 1801 may be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, while the central processing unit can be used to control the communication device, execute software programs, and process data from the software programs.

[0713] Optionally, the processor 1801 may also store instructions 1803 or data (e.g., intermediate data). Optionally, instructions 1803 may be executed by the processor 1801, causing the communication device 180 to perform the methods described in the above method embodiments corresponding to the terminal device or network device.

[0714] Optionally, the communication device 180 may include a circuit that can perform the functions of sending, receiving, or communicating in the foregoing method embodiments.

[0715] Optionally, the communication device 180 may include one or more memories 1802, which may store instructions 1804 that can be executed on the processor 1801 to cause the communication device 180 to perform the methods described in the above method embodiments.

[0716] Alternatively, the memory 1802 may also store data. The processor 1801 and the memory 1802 can be configured separately or integrated together.

[0717] Optionally, the communication device 180 may further include a transceiver 1805 and / or an antenna 1806. The processor 1801, which may be referred to as a processing unit, controls the communication device 180 (terminal device, core network device, or wireless access network device). The transceiver 1805, which may be referred to as a transceiver unit, transceiver, transceiver circuit, or transceiver, is used to implement the transceiver functions of the communication device 180.

[0718] Optionally, if the communication device 180 is used to implement the operation corresponding to the terminal device in the above embodiments, for example, the transceiver 1805 may send a random access preamble; and the processor 1801 may send a random access preamble based on at least one physical random access channel timing of at least one physical random access channel timing set.

[0719] Optionally, the specific implementation process of the processor 1801 and transceiver 1805 can be found in the relevant descriptions of the above embodiments, and will not be repeated here.

[0720] Optionally, if the communication device 180 is used to implement the operation of the network device corresponding to the above embodiments, for example, the transceiver 1805 can receive the random access preamble.

[0721] Optionally, the specific implementation process of the processor 1801 and transceiver 1805 can be found in the relevant descriptions of the above embodiments, and will not be repeated here.

[0722] The processor 1801 and transceiver 1805 described in this application can be implemented on ICs (Integrated Circuits), analog integrated circuits, RFICs (Radio Frequency Integrated Circuits), mixed-signal integrated circuits, ASICs (Application Specific Integrated Circuits), PCBs (Printed Circuit Boards), electronic devices, etc. The processor 1801 and transceiver 1805 can also be manufactured using various integrated circuit process technologies, such as CMOS (Complementary Metal Oxide Semiconductor), NMOS (N-Metal-Oxide-Semiconductor), PMOS (Positive channel Metal Oxide Semiconductor), BJT (Bipolar Junction Transistor), Bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0723] In this application, the communication device can be a terminal device (such as a mobile phone) or a network device (such as a base station), depending on the context. Furthermore, the terminal device can be implemented in various forms. For example, the terminal devices described in this application can include mobile terminals such as mobile phones, tablets, laptops, handheld computers, personal digital assistants (PDAs), portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminal devices such as digital TVs and desktop computers.

[0724] Although the communication device is described above using terminal devices or network devices as examples, the scope of the communication device described in this application is not limited to the aforementioned terminal devices or network devices, and the structure of the communication device is not limited to FIG14. The communication device can be a standalone device or can be part of a larger device.

[0725] This application also provides a communication system, including: a terminal device as described in any of the above embodiments; and a network device as described in any of the above embodiments.

[0726] This application also provides a communication device, including a memory and a processor. The memory stores a transmission program, and when the transmission program is executed by the processor, it implements the steps of the transmission method in any of the above embodiments.

[0727] The communication equipment mentioned in this application may be a terminal device (such as a mobile phone) or a network device (such as a base station). The specific meaning needs to be clarified according to the context.

[0728] This application also provides a computer-readable storage medium storing a transmission program, which, when executed by a processor, implements the steps of the transmission method in any of the above embodiments.

[0729] In the embodiments of the communication device and storage medium provided in this application, all the technical features of any of the above-described transmission method embodiments may be included. The extended and explained contents of the specification are basically the same as those of the embodiments of the above methods, and will not be repeated here.

[0730] This application also provides a computer program product, which includes computer program code. When the computer program code is run on a computer, it causes the computer to perform the methods described in the various possible implementations above.

[0731] This application also provides a chip, including a memory and a processor. The memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that a device with the chip installed performs the methods described in the various possible implementations above.

[0732] It is understood that the above scenarios are merely examples and do not constitute a limitation on the application scenarios of the technical solutions provided in the embodiments of this application. The technical solutions of this application can also be applied to other scenarios. For example, as those skilled in the art will know, with the evolution of system 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.

[0733] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0734] The steps in the method of this application embodiment can be adjusted, combined, or deleted according to actual needs.

[0735] The units in the device of this application embodiment can be merged, divided, and deleted according to actual needs.

[0736] In this application, the same or similar terms, concepts, technical solutions and / or application scenario descriptions are generally described in detail only when they appear for the first time. When they appear again, they are generally not repeated for the sake of brevity. When understanding the technical solutions and other contents of this application, the same or similar terms, concepts, technical solutions and / or application scenario descriptions that are not described in detail later can be referred to their previous relevant detailed descriptions.

[0737] In this application, the descriptions of the various embodiments have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0738] The technical features of the present application can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of the present application.

[0739] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, controlled terminal device, or network device, etc.) to execute the methods of each embodiment of this application.

[0740] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented, in whole or in part, as a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a storage medium or transmitted from one storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, storage disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., a solid-state disk (SSD)).

[0741] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A transmission method, wherein, Applied to terminal devices, including the following steps: S1: Transmit the random access preamble based on at least one physical random access channel timing from at least one set of physical random access channel timings.

2. The method according to claim 1, wherein, Step S2 includes at least one of the following: The random access preamble is transmitted based on N physical random access channel opportunities of a physical random access channel opportunity set. The random access preamble is sent based on the first number of physical random access channel opportunities of the N physical random access channel opportunity set. The random access preamble is transmitted based on the N physical random access channel timings of the N physical random access channel timing set.

3. The method according to claim 2, wherein, It also includes at least one of the following: The physical random access channel timing is the effective physical random access channel timing used for physical random access channel transmission of different transmit beams; The N physical random access channel opportunities in the N physical random access channel opportunity set are the Xth valid physical random access channel opportunity in each physical random access channel opportunity set in the N physical random access channel opportunity set. The first number of valid physical random access channel opportunities in a set of N physical random access channel opportunities use the same frequency domain resources; N physical random access channel opportunities in a set of N physical random access channel opportunities use the same frequency domain resources; If the number of frequency division multiplexing physical random access channel opportunities in a time instance is greater than 1, then at least two of the N physical random access channel opportunity sets use different frequency domain resources. If the number of physical random access channel opportunities for frequency division multiplexing in a time instance is equal to 1, then at least two physical random access channel opportunity sets in the N physical random access channel opportunity sets use the same frequency domain resources.

4. The method according to claim 3, wherein, It also includes at least one of the following: The effective physical random access channel timing for different transmit beams is associated with at least one synchronization signal block index; The effective physical random access channel timings for different transmit beams are associated with the same preamble index; The effective physical random access channel timing for different transmit beams is associated with different preamble indices; N valid physical random access channel opportunities in a set of physical random access channel opportunities lie within a time period; A set of physical random access channel opportunities contains L valid physical random access channel opportunities within a time period; N physical random access channel opportunity sets are located within a time period; N represents the number of different transmission beams; X is less than or equal to the number of times the preamble is repeated in the same beam.

5. The method according to claim 4, wherein, The set of physical random access channel opportunities within a time period satisfies at least one of the following: The first valid physical random access channel opportunity in the first set of physical random access channel opportunities is the first valid physical random access channel opportunity within the time period; After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity of each subsequent set of physical random access channel opportunities is located after the first valid physical random access channel opportunity of the previous set of physical random access channel opportunities, and is offset by the first consecutive valid physical random access channel opportunities in the time domain. After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity of each subsequent set of physical random access channel opportunities is located after the first valid physical random access channel opportunity of the previous set of physical random access channel opportunities, and is offset by the second consecutive time slot in the time domain. If the first parameter is configured, then after the first physical random access channel timing set, the first valid physical random access channel timing of each subsequent physical random access channel timing set is located after the first valid physical random access channel timing of the previous physical random access channel timing set, and is offset in the time domain by the first parameter consecutive valid physical random access channel timings. If the first parameter is not configured, then after the first physical random access channel timing set, the first valid physical random access channel timing of each subsequent physical random access channel timing set is located after the physical random access channel timing of the previous physical random access channel timing set. After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity in each subsequent set of physical random access channel opportunities is first sorted in ascending order by the frequency domain resource index of the frequency division multiplexing physical random access channel opportunity, and then sorted in ascending order by the time domain resource index of the time division multiplexing physical random access channel opportunity.

6. The method according to claim 5, wherein, It also includes at least one of the following: A physical random access channel timing set includes N valid physical random access channel timings that are consecutive in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization signal block index, and each synchronization signal block index is associated with the same preamble index in the valid physical random access channel timings of the physical random access channel timing set. A physical random access channel timing set includes N valid physical random access channel timings that are continuous in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization signal block index, and at least two valid physical random access channel timings in the physical random access channel timing set are associated with different preamble indices. A physical random access channel timing set includes L valid physical random access channel timings that are consecutive in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization block index, and each synchronization block index is associated with the same preamble index in the valid physical random access channel timings of the physical random access channel timing set. If, within a time period, after the first valid physical random access channel opportunity in a set of physical random access channel opportunities, the number of remaining valid physical random access channel opportunities is less than N-1, then the physical random access channel opportunities in that set of physical random access channel opportunities are invalid physical random access channel opportunities. If, within a time period, after the first valid physical random access channel opportunity in a set of physical random access channel opportunities, the number of remaining valid physical random access channel opportunities is less than L-1, then the physical random access channel opportunities in that set of physical random access channel opportunities are invalid physical random access channel opportunities; L is the number of times the preamble of the same beam is repeated. N, X, and L are positive integers; The first number is related to N and / or L.

7. A transmission method, wherein, Applied to network devices, including the following steps: S2: Receive random access preamble, which is sent by the terminal device based on at least one physical random access channel timing from at least one set of physical random access channel timings.

8. The method according to claim 7, wherein, The terminal device transmits a random access preamble based on at least one physical random access channel timing from at least one set of physical random access channel timings, including at least one of the following: The terminal device sends a random access preamble based on N physical random access channel opportunities from a set of physical random access channel opportunities; The terminal device sends a random access preamble based on the first number of physical random access channel opportunities in the set of N physical random access channel opportunities. The terminal device sends a random access preamble based on the N physical random access channel timings of the N physical random access channel timing set.

9. The method according to claim 8, wherein, It also includes at least one of the following: The physical random access channel timing is the effective physical random access channel timing used for physical random access channel transmission of different transmit beams; The N physical random access channel opportunities in the N physical random access channel opportunity set are the Xth valid physical random access channel opportunity in each physical random access channel opportunity set in the N physical random access channel opportunity set. The first number of valid physical random access channel opportunities in a set of N physical random access channel opportunities use the same frequency domain resources; N physical random access channel opportunities in a set of N physical random access channel opportunities use the same frequency domain resources; N physical random access channel timing sets use different frequency domain resources; If the number of frequency division multiplexing physical random access channel opportunities in a time instance is greater than 1, then at least two of the N physical random access channel opportunity sets use different frequency domain resources. If the number of physical random access channel opportunities for frequency division multiplexing in a time instance is equal to 1, then at least two physical random access channel opportunity sets in the N physical random access channel opportunity sets use the same frequency domain resources.

10. The method according to claim 9, wherein, It also includes at least one of the following: The effective physical random access channel timing for different transmit beams is associated with at least one synchronization signal block index; The effective physical random access channel timings for different transmit beams are associated with the same preamble index; The effective physical random access channel timing for different transmit beams is associated with different preamble indices; N physical random access channel opportunity sets are located within a time period; N valid physical random access channel opportunities in a set of physical random access channel opportunities lie within a time period; A set of physical random access channel opportunities contains L valid physical random access channel opportunities within a time period; N physical random access channel opportunity sets are located within a time period; N represents the number of different transmission beams; X is less than or equal to the number of times the preamble is repeated in the same beam.

11. The method according to claim 10, wherein, The set of physical random access channel opportunities within a time period satisfies at least one of the following: The first valid physical random access channel opportunity in the first set of physical random access channel opportunities is the first valid physical random access channel opportunity within the time period; After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity of each subsequent set of physical random access channel opportunities is located after the first valid physical random access channel opportunity of the previous set of physical random access channel opportunities, and is offset by the first consecutive valid physical random access channel opportunities in the time domain. After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity of each subsequent set of physical random access channel opportunities is located after the first valid physical random access channel opportunity of the previous set of physical random access channel opportunities, and is offset by the second consecutive time slot in the time domain. If the first parameter is configured, then after the first physical random access channel timing set, the first valid physical random access channel timing of each subsequent physical random access channel timing set is located after the first valid physical random access channel timing of the previous physical random access channel timing set, and is offset in the time domain by the first parameter consecutive valid physical random access channel timings. If the first parameter is not configured, then after the first physical random access channel timing set, the first valid physical random access channel timing of each subsequent physical random access channel timing set is located after all physical random access channel timings of the previous physical random access channel timing set. After the first set of physical random access channel opportunities, the first valid physical random access channel opportunity in each subsequent set of physical random access channel opportunities is first sorted in ascending order by the frequency domain resource index of the frequency division multiplexing physical random access channel opportunity, and then sorted in ascending order by the time domain resource index of the time division multiplexing physical random access channel opportunity.

12. The method according to claim 11, wherein, It also includes at least one of the following: A physical random access channel timing set includes N valid physical random access channel timings that are continuous in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization signal block index, and each synchronization signal block index is associated with the same preamble index in the valid physical random access channel timings of the physical random access channel timing set. A physical random access channel timing set includes N valid physical random access channel timings that are continuous in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization signal block index, and at least two valid physical random access channel timings in the physical random access channel timing set are associated with different preamble indices. A physical random access channel timing set includes L valid physical random access channel timings that are consecutive in the time domain, use the same frequency domain resources, and are associated with the same at least one synchronization block index, and each synchronization block index is associated with the same preamble index in the valid physical random access channel timings of the physical random access channel timing set. If, within a time period, after the first valid physical random access channel opportunity in a set of physical random access channel opportunities, the number of remaining valid physical random access channel opportunities is less than N-1, then the physical random access channel opportunities in that set of physical random access channel opportunities are invalid physical random access channel opportunities. If, within a time period, after the first valid physical random access channel opportunity in a set of physical random access channel opportunities, the number of remaining valid physical random access channel opportunities is less than L-1, then the physical random access channel opportunities in that set of physical random access channel opportunities are invalid physical random access channel opportunities; L is the number of times the preamble of the same beam is repeated. N, X, and L are positive integers; The first number is related to N and / or L.

13. A communication device, wherein, include: A memory and a processor, wherein the memory stores a transmission program, and the transmission program, when executed by the processor, implements the transmission method as described in claim 1 or 7.

14. A computer-readable storage medium, wherein, The computer-readable storage medium stores a transmission program, which, when executed by a processor, implements the transmission method as described in claim 1 or 7.

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