Control method, communication device and storage medium

Abstract

According to the invention, the uplink timing is adjusted based on the downlink information, and the random access process can be carried out based on a specific network device in a scene of a plurality of network devices, so that the timing adjustment accuracy is improved.

Description

Control method, communication device and storage medium Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a control method, communication equipment, and storage medium. Background Art

[0002] In existing protocols, in scenarios with multiple network devices, the SSB (Synchronization Signal and PBCH block) is not transmitted based on a specific network device, and the SSB is not grouped or bound to a specific network device. In scenarios with multiple network devices, the random access process cannot be performed based on a specific network device, which affects the accuracy of timing adjustment.

[0003] Therefore, it is necessary to propose a solution to improve the accuracy of timing adjustment.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Technical Solutions

[0005] The main purpose of this application is to provide a control method, communication equipment and storage medium, aiming to improve the accuracy of timing adjustment.

[0006] To achieve the above objectives, the present application provides a control method that can be applied to a terminal device (such as a mobile phone), comprising the following steps:

[0007] S1: Adjust uplink timing based on downlink information.

[0008] The present application also provides a control method, which can be applied to a network device (such as a base station), comprising the following steps:

[0009] S0: Send downlink information so that the terminal device can adjust the uplink timing based on the downlink information.

[0010] The present application also provides a communication device, comprising: a memory, a processor, and a control program stored in the memory and executable on the processor, wherein the control program implements the steps of any of the control methods described above when executed by the processor.

[0011] The present application also provides a storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of any of the control methods described above are implemented.

[0012] The present application adjusts the uplink timing based on downlink information, so that in a scenario with multiple network devices, the random access process can be performed based on a specific network device, thereby improving the accuracy of the timing adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without inventive work.

[0014] FIG1 is a schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present application;

[0015] FIG2 is a diagram of a communication network system architecture provided by an embodiment of the present application;

[0016] FIG3 is a schematic diagram of the hardware structure of a controller 140 provided in this application;

[0017] FIG4 is a schematic diagram of the hardware structure of a network node 150 provided in this application;

[0018] FIG5 is a schematic flow chart of a control method according to the first embodiment;

[0019] FIG6 is a schematic flow chart of a control method according to a second embodiment;

[0020] FIG7 is a schematic flow chart of a control method according to a third embodiment;

[0021] FIG8 is a schematic flow chart of a control method according to a fourth embodiment;

[0022] FIG9 is a schematic diagram showing a first principle of a control method according to a fifth embodiment;

[0023] FIG10 is a schematic diagram showing a second principle of a control method according to the fifth embodiment;

[0024] FIG11 is a third schematic diagram of a control method according to the fifth embodiment;

[0025] FIG12 is a schematic diagram showing a first principle of a control method according to a sixth embodiment;

[0026] FIG13 is a schematic diagram showing a second principle of a control method according to a sixth embodiment;

[0027] FIG14 is a schematic diagram showing a first principle of a control method according to an eighth embodiment;

[0028] FIG15 is a schematic diagram showing a second principle of a control method according to the eighth embodiment;

[0029] FIG16 is a first structural diagram of a control device provided in an embodiment of the present application;

[0030] FIG17 is a second structural diagram of the control device provided in an embodiment of the present application;

[0031] FIG18 is a schematic diagram of the structure of the communication device provided in an embodiment of the present application.

[0032] The purpose of this application, its features, and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings. The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and the accompanying text are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of this application to those skilled in the art by reference to specific embodiments.

[0033] Implementation Methods of the Application

[0034] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0035] It should be noted that, in this document, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings need to be determined by their explanation in the specific embodiment or further combined with the context of the specific embodiment.

[0036] 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 solely to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, 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 term "if," as used herein, may be interpreted as "upon," "when," or "in response to a determination." Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms "comprising" and "including" indicate the presence of the recited features, steps, operations, elements, components, items, types, and / or groups, but do not preclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, types, and / or groups. The terms "or," "and / or," "including at least one of the following," etc., as used herein, may be interpreted as inclusive, meaning any one or any combination. For example, “comprising at least one of the following: A, B, C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”; and for another example, “A, B or C” or “A, B and / or C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”. An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some manner.

[0037] It should be understood that, although the various steps in the flowchart in the embodiment of the present application are shown in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence in the order indicated by the arrows. Unless clearly stated herein, the execution of these steps is not strictly limited in order, and they can be performed in other orders. Moreover, at least a portion of the steps in the figure may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and their execution order is not necessarily performed in sequence, but can be performed in turn or alternately with at least a portion of other steps or sub-steps or stages of other steps.

[0038] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to the determination" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)," depending on the context.

[0039] It should be noted that in this article, step codes such as S1 and S2 are used for the purpose of expressing the corresponding content more clearly and concisely, and do not constitute a substantial restriction on the order. When implementing the step, those skilled in the art may execute S2 first and then S1, etc., but these should all be within the scope of protection of this application.

[0040] It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0041] In the subsequent description, the use of suffixes such as "module", "component" or "unit" to represent elements is only for the purpose of facilitating the description of the present application and has no specific meaning. Therefore, "module", "component" or "unit" can be used interchangeably.

[0042] The terminal device may be implemented in various forms. For example, the terminal device described in this application may include intelligent terminal devices such as mobile phones, tablet computers, laptop computers, PDAs, portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, and other fixed terminal devices such as digital TVs and desktop computers.

[0043] The subsequent description will be made using a mobile terminal as an example. Those skilled in the art will understand that, in addition to components specifically used for mobile purposes, the configuration according to the embodiments of the present application can also be applied to fixed-type terminal devices.

[0044] Please refer to Figure 1, which is a schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present application. The mobile terminal 100 may include components such as 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. Those skilled in the art will understand that the mobile terminal structure shown in Figure 1 does not limit the mobile terminal. The mobile terminal may include more or fewer components than shown, or may combine certain components, or arrange the components differently.

[0045] The following is a detailed introduction to the various components of the mobile terminal in conjunction with Figure 1:

[0046] The RF unit 101 can be used to send and receive information or receive signals during calls. Specifically, it receives downlink information from the base station and transmits it to the processor 110 for processing. It also transmits uplink data to the base station. Typically, the RF unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and more. Furthermore, the RF unit 101 can communicate with the network and other devices via wireless communication. The above-mentioned wireless communications can 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, etc.

[0047] WiFi is a short-range wireless transmission technology. A mobile terminal, through WiFi module 102, enables users to send and receive emails, browse web pages, and access streaming media, providing wireless broadband Internet access. Although FIG1 illustrates WiFi module 102, it is understood that it is not a required component of the mobile terminal and can be omitted as needed without altering the essence of the invention.

[0048] The audio output unit 103 can convert audio data received by the RF unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output it as sound when the mobile terminal 100 is in a call signal reception mode, a talk mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Furthermore, the audio output unit 103 can also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, or the like.

[0049] 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 captured by an image capture device (e.g., a camera) in video capture mode or image capture mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the GPU 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the RF unit 101 or the WiFi module 102. The microphone 1042 may receive sound (audio data) in operating modes such as a phone call mode, a recording mode, and a voice recognition mode, and may process such sound into audio data. In the phone call mode, the processed audio (voice) data may be converted into a format that can be transmitted to a mobile communication base station via the RF unit 101. The microphone 1042 may 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.

[0050] 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 brightness of the ambient light, and the proximity sensor can turn off the display panel 1061 and / or the backlight when the mobile terminal 100 is moved to the ear. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that recognize the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for other sensors that can be configured in the mobile phone, such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., they will not be described here.

[0051] 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.

[0052] The user input unit 107 can be used to receive input digital or character information, and to generate key signal input related to the user settings and function control of the mobile terminal. Optionally, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also known as a touch screen, can collect user touch operations on or near it (such as operations performed by the user using a finger, stylus, or any other suitable object or accessory on or near the touch panel 1071) and drive the corresponding connection device according to a pre-set program. The touch panel 1071 may include two parts: a touch detection device and a touch controller. Optionally, the touch detection device detects the user's touch direction and detects the signal generated by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device and converts it into touch point coordinates, which are then sent to the processor 110. It can also receive commands sent by the processor 110 and execute them. In addition, the 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 further include other input devices 1072. Optionally, the other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, power keys, etc.), a trackball, a mouse, a joystick, etc., and the specifics are not limited here.

[0053] Optionally, the touch panel 1071 may overlay 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. The processor 110 then provides a corresponding visual output on the display panel 1061 based on the type of touch event. Although in FIG1 , the touch panel 1071 and the display panel 1061 are shown as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, which is not limited to this specific embodiment.

[0054] The interface unit 108 serves as an interface through which at least one external device can be connected to the 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. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and an external device.

[0055] Memory 109 can be used to store software programs and various data. Memory 109 may primarily include a program storage area and a data storage area. Optionally, the program storage area may store an operating system and at least one application required for a function (such as a sound playback function or an image playback function); the data storage area may store data generated based on the use of the mobile phone (such as audio data, a phone book, etc.). Furthermore, memory 109 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0056] Processor 110 is the control center of the mobile terminal, connecting all components of the mobile terminal using various interfaces and circuits. By running or executing software programs and / or modules stored in memory 109 and accessing data stored in memory 109, it executes various functions of the mobile terminal and processes data, thereby providing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, processor 110 may integrate an application processor and a modem processor. Optionally, the application processor primarily handles the operating system, user interface, and application programs, while the modem processor primarily handles wireless communications. It is understood that the modem processor may not be integrated into processor 110.

[0057] The mobile terminal 100 may also include a power supply 111 (such as a battery) for supplying power to various components. Preferably, the power supply 111 may be logically connected to the processor 110 through a power management system, thereby managing functions such as charging, discharging, and power consumption through the power management system.

[0058] Although not shown in FIG. 1 , the mobile terminal 100 may further include a Bluetooth module, etc., which will not be described in detail here.

[0059] To facilitate understanding of the embodiments of the present application, the communication network system on which the mobile terminal of the present application is based is described below.

[0060] Please refer to Figure 2, which is a communication network system architecture diagram provided in an embodiment of the present application. The communication network system is an NR (New Radio) system of universal mobile communication technology. The NR system includes UE (User Equipment) 201, E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, EPC (Evolved Packet Core) 203 and the operator's IP service 204, which are connected in sequence.

[0061] Optionally, UE201 may be the above-mentioned terminal device 100, which will not be described in detail here.

[0062] E-UTRAN 202 includes eNodeB 2021 and other eNodeBs 2022 . Optionally, eNodeB 2021 may be connected to other eNodeBs 2022 via a backhaul (eg, an X2 interface). eNodeB 2021 is connected to EPC 203 , and eNodeB 2021 may provide access from UE 201 to EPC 203 .

[0063] EPC 203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving Gate Way) 2034, a PGW (PDN Gate Way) 2035, and a PCRF (Policy and Charging Rules Function) 2036. Optionally, MME 2031 is a control node that processes signaling between UE 201 and EPC 203, providing bearer and connection management. HSS 2032 provides registers for managing functions such as the Home Location Register (not shown) and stores user-specific information such as service features and data rates. All user data can be sent through SGW2034, PGW2035 can provide IP address allocation and other functions for UE 201, PCRF2036 is the policy and charging control policy decision point for service data flow and IP bearer resources, and it selects and provides available policy and charging control decisions for the policy and charging execution function unit (not shown in the figure).

[0064] The IP service 204 may include the Internet, an intranet, an IMS (IP Multimedia Subsystem), or other IP services.

[0065] Although the above introduction takes 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 can also be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, 5G and future new network systems (such as 6G), etc., which are not limited here.

[0066] FIG3 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 principles and beneficial effects are similar and will not be repeated here.

[0067] 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.

[0068] Figure 4 is a schematic diagram of the hardware structure of a network node 150 provided in this application. Network node 150 includes: a memory 1501 and a processor 1502. Memory 1501 is used to store program instructions, and processor 1502 is used to call the program instructions in memory 1501 to execute the steps performed by the first node in the first embodiment of the above method. The implementation principles and beneficial effects are similar and will not be repeated here.

[0069] 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.

[0070] The integrated modules implemented in the form of software function modules can be stored in a computer-readable storage medium. The software function modules stored in a storage medium include a number of instructions for causing a computer device (which can be a personal computer, server, or network device, etc.) or a processor to execute some of the steps of the methods of various embodiments of the present application.

[0071] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. 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 storage medium. For example, the computer instructions can be transmitted from a website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. 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 includes one or more available media integrations. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive solid state disk, SSD), etc.

[0072] Based on the above-mentioned mobile terminal hardware structure and communication network system, various embodiments of the present application are proposed.

[0073] First embodiment

[0074] 5 , which is a flow chart of a control method according to a first embodiment, the method of the embodiment of the present application can be applied to a terminal device (such as a mobile phone). The control method includes the following steps:

[0075] S1: Adjust uplink timing based on downlink information.

[0076] In an embodiment of the present application, for a scenario based on multiple network devices, for example: a scenario of multiple transmission receiving nodes (Multi-TRP, Multi-Transmission / Reception Point), optionally, the multiple network device scenarios are multiple network device scenarios based on multiple downlink control information (DCI, Downlink Control Information), for example: a scenario of multiple transmission receiving points based on multiple downlink control information. In this scenario, the control resource set pool index value parameter (for example: coresetPoolIndex) configured by the radio resource control (RRC, Radio Resource Control) in the control resource set information element (IE, Information Element) (for example: ControlResourceSet) has two values, which are 0 and 1. When the control resource set pool index value parameter is 0 and 1, it corresponds to two groups of control resource sets (CORESET, Control Resource Set), for example: a first group of control resource sets, wherein the control resource set pool index value parameter of each control resource set is 0; and a second group of control resource sets, wherein the control resource set pool index value parameter of each control resource set is 1. In a scenario of multiple network devices based on multiple downlink control information, the terminal device can receive / monitor two physical downlink control channels (PDCCH) on the resources corresponding to the two control resource sets. Channel), for example: the network device includes a first network device and a second network device, the first network device is associated with a control resource pool index value parameter value 0, optionally, the terminal device receives / monitors a first physical downlink control channel sent from the first network device on resources corresponding to a first group of control resource sets with a control resource pool index value parameter 0, receives a physical downlink shared channel or a downlink reference signal scheduled by the first physical downlink control channel from the first network device, and / or sends a physical uplink shared channel or a physical uplink control channel or an uplink reference signal scheduled by the first physical downlink control channel to the first network device; the second network device is associated with a control resource pool index value parameter value 1, optionally, the terminal device receives / monitors a second physical downlink control channel sent from the second network device on resources corresponding to a second group of control resource sets with a control resource pool index value parameter 1, receives a physical downlink shared channel or a downlink reference signal scheduled by the second physical downlink control channel from the second network device, and / or sends a physical uplink shared channel or a physical uplink control channel or an uplink reference signal scheduled by the second physical downlink control channel to the second network device.

[0077] Optionally, in the embodiment of the present application, the first network device and the second network device may belong to the same cell or different cells.

[0078] Optionally, the downlink information includes at least one of radio resource control signaling, system information, downlink control information, and a synchronization broadcast block;

[0079] Optionally, the radio resource control signaling and / or the system information includes at least one of a synchronization broadcast block position parameter in a burst, a synchronization broadcast block number parameter for each element, an element arrangement pattern parameter, a group parameter, a group status parameter, a short bitmap parameter, a medium bitmap parameter, and a long bitmap parameter. Optionally, the system information is a system information block 1 (SIB1).

[0080] Optionally, the downlink control information includes first downlink control information and / or second downlink control information.

[0081] Optionally, the terminal device may be in a single network device or multiple network device scenario. The terminal device can implicitly or explicitly determine when to group synchronization broadcast blocks (SSBs), that is, to associate different SSBs with different network devices. All candidate SSBs are grouped according to the number of SSBs per element and the arrangement pattern of the elements into two groups of candidate SSBs, each group of candidate SSBs is associated with a network device.

[0082] Optionally, according to the number of SSBs in each element and the arrangement pattern of the elements, the SSBs for transmission indicated by the SSB position parameter in the burst (for example: ssb-PositionsInBurst, also known as the synchronization broadcast block position parameter in the burst) in the service cell common configuration information element and / or the service cell common system information block configuration information element are grouped and divided into two groups of SSBs for transmission, each group being sent from one network device.

[0083] Optionally, the terminal device can directly obtain the SSB for transmission of the first and second network devices through two parameters (for example, ssb-PositionsInBurst and ssb-PositionsInBurst2) or two sets of parameters (for example, two sets of inOneGroup and groupPresence, or two sets of shortBitmap, mediumBitmap and longBitmap).

[0084] Optionally, the terminal device measures the SSB sent from the first network device and finds the best SSB therefrom for use in a subsequent random access channel (RACH) process; and / or, the terminal device measures the SSB sent from the second network device and finds the best SSB therefrom for use in a subsequent RACH process.

[0085] Optionally, a random access response corresponding to the random access preamble is received in a random access response window, and then timing adjustment is performed on a physical uplink channel and / or a reference signal according to a timing advance command in the random access response.

[0086] This embodiment uses the above solution, specifically by adjusting the uplink timing based on downlink information, so that in a scenario with multiple network devices, the random access process can be performed based on a specific network device, thereby improving the accuracy of timing adjustment.

[0087] Second embodiment

[0088] Based on the first embodiment of the present application, this embodiment discloses a specific method for adjusting the uplink timing based on downlink information in step S1. Referring to FIG6 , FIG6 is a flow chart of a control method according to the second embodiment, showing that the specific steps of S1 include:

[0089] S11: Select or determine a physical random access channel opportunity based on downlink information;

[0090] Optionally, the SSBs are divided into two groups based on radio resource control signaling and / or system information in the downlink information, with the first group of SSBs being sent from the first network device and the second group of SSBs being sent from the second network device. An optimal SSB is selected from the first group of SSBs, and a random access preamble (e.g., a preamble) is sent to the first network device based on the SSB; and / or an optimal SSB is selected from the second group of SSBs, and a random access preamble is sent to the second network device based on the SSB.

[0091] S12: Send a random access preamble on the physical random access channel;

[0092] Optionally, the terminal device determines a first physical random access channel occasion (PRACH occasion) based on the first SSB, and / or determines a second PRACH occasion based on the second SSB. Optionally, depending on whether the terminal device supports sending random access preambles to two network devices simultaneously, there are the following two situations:

[0093] (1) Support: Regardless of whether the first PRACH occasion and the second PRACH occasion are the same in the time domain, the terminal device can directly send a random access preamble to the first network device on the first PRACH occasion, and the terminal device can directly send a random access preamble to the second network device on the second PRACH occasion.

[0094] (2) Not supported: The terminal device sends random access preambles to two network devices separately at different PRACH occasions in the time domain through the following methods:

[0095] The second random access process is not performed before the first random access response window expires: the terminal device first sends a random access preamble to one of the network devices, and the terminal device sends a random access preamble to the other network device after the random access response window expires.

[0096] Send a random access preamble on the subsequent available PRACH occasion corresponding to the SSB: If the first PRACH occasion and the second PRACH occasion are the same in the time domain, the terminal device first sends a random access preamble to one network device, and obtains the subsequent available PRACH occasion associated with the other network device based on the best SSB corresponding to the other network device. The terminal device selects a PRACH occasion from them to send a random access preamble to the network device.

[0097] A constraint relationship is designed for the association method between SSB and PRACH occasion: a first physical random access channel occasion is obtained based on the constraint relationship and the first synchronous broadcast block, and / or a second physical random access channel occasion is obtained based on the constraint relationship and the second synchronous broadcast block.

[0098] S13: Receive the random access response and perform timing adjustment on the physical uplink channel and / or reference signal according to the timing advance command, specifically including at least one of the following:

[0099] Performing timing adjustment on the first physical uplink channel and / or the reference signal according to the first timing advance command;

[0100] The timing of the second physical uplink channel and / or the reference signal is adjusted according to the second timing advance command.

[0101] Optionally, after receiving a random access response including a timing advance command, the physical uplink channel and / or the reference signal are timing adjusted according to the timing advance command. Optionally, the uplink timing adjustment includes uplink timing adjustment based on non-contention-based random access and / or uplink timing adjustment based on contention-based random access; the physical uplink channel includes a physical uplink shared channel (PUSCH, Physical Uplink Shared Channel) and / or a physical uplink control channel (PUCCH, Physical Uplink Control Channel), and the reference signal includes a channel sounding reference signal (SRS, Sounding Reference Signal).

[0102] Optionally, the uplink timing adjustment based on non-contention random access mainly includes the following steps:

[0103] Step 1: Send downlink control information from the first network device, optionally including a first random access preamble index value, a first SSB index value, and a first physical random access channel (PRACH, Physical Random Access Channel) mask index value, optionally, the first random access preamble index value is not all 0; and / or, send downlink control information from the second network device, optionally including a second random access preamble index value, a second SSB index value, and a second physical random access channel mask index value, optionally, the second random access preamble index value is not all 0.

[0104] Step 2: The terminal device determines a first PRACH occasion based on the first SSB index value and the first physical random access channel mask index value, and sends a first random access preamble to the first network device on the first PRACH occasion; and / or, the terminal device determines a second PRACH occasion based on the second SSB index value and the second physical random access channel mask index value, and sends a second random access preamble to the second network device on the second PRACH occasion.

[0105] Step 3: Send a random access response corresponding to the first random access preamble from the first network device, and / or send a random access response corresponding to the second random access preamble from the second network device.

[0106] Step 4: Use the first timing advance command to perform timing adjustment on the first physical uplink channel / reference signal, and / or use the second timing advance command to perform timing adjustment on the second physical uplink channel / reference signal.

[0107] Optionally, the uplink timing adjustment of contention-based random access mainly includes the following steps:

[0108] Step 1: Contention-based random access includes contention-based random access initiated by a terminal device and contention-based random access initiated by a network device. Optionally, the contention-based random access initiated by a terminal device includes type 1 random access and type 2 random access. The contention-based random access initiated by a network device instructs the terminal device to perform random access by sending downlink control information, that is: downlink control information is sent from a first network device, optionally including a first random access preamble index value, optionally, the first random access preamble index value is all 0; and / or downlink control information is sent from a second network device, optionally including a second random access preamble index value, optionally, the second random access preamble index value is all 0. The terminal device selects a first SSB from the first group of SSBs and / or selects a second SSB from the second group of SSBs.

[0109] Step 2: The terminal device determines the first PRACH occasion according to the first SSB, and / or determines the second PRACH occasion according to the second SSB.

[0110] Step 3: The terminal device sends a first random access preamble to the first network device on the first PRACH occasion, and / or sends a second random access preamble to the second network device on the second PRACH occasion.

[0111] Step 4: Send a random access response corresponding to the first random access preamble from the first network device, and / or send a random access response corresponding to the second random access preamble from the second network device. Optionally, for Type 2 random access, send an absolute timing advance command Media Access Control Control Element (MAC CE) corresponding to the first random access preamble (e.g., an absolute timing advance command MAC CE) from the first network device, and / or send an absolute timing advance command MAC CE from the second network device.

[0112] Step 5: Use the first timing advance command to perform timing adjustment on the first physical uplink channel / reference signal, and / or use the second timing advance command to perform timing adjustment on the second physical uplink channel / reference signal.

[0113] This embodiment, through the above solution, specifically selects or determines a physical random access channel opportunity based on downlink information; sends a random access preamble at the physical random access channel opportunity; receives a random access response, and adjusts the timing of the physical uplink channel and / or reference signal based on the timing advance command. In a scenario with multiple network devices, SSB is configured based on a specific network device, thereby improving the accuracy of timing adjustment.

[0114] Third embodiment

[0115] Based on the first and second embodiments of the present application, this embodiment discloses a specific method for selecting or determining a physical random access channel timing based on downlink information in step S11. Referring to FIG. 7 , FIG. 7 is a flow chart of a control method according to a third embodiment, showing that the specific steps of step S11 include:

[0116] S111: Select or determine a first group of synchronized broadcast blocks and / or a second group of synchronized broadcast blocks based on radio resource control signaling and / or system information;

[0117] Optionally, before the step of selecting or determining the first group of synchronized broadcast blocks and / or the second group of synchronized broadcast blocks based on radio resource control signaling and / or system information, at least one of the following is further included:

[0118] Selecting or determining a sync broadcast block for transmission based on a sync broadcast block position parameter in a burst;

[0119] Adding a synchronization broadcast block position parameter in the second burst to the serving cell common system information block configuration information element and / or the serving cell common configuration information element;

[0120] A second group of group parameters and group status parameters, and / or at least one of a second group of short bitmap parameters, medium bitmap parameters and long bitmap parameters are added to the synchronous broadcast block position parameters in the burst.

[0121] Optionally, during the grouping of candidate SSBs, the terminal device may be in a single network device or multiple network device scenario. The terminal device needs to determine when to group the synchronous broadcast blocks, that is, to associate different SSBs with different network devices. This can be done in the following ways:

[0122] Implicit mode: The terminal device judges based on the application scenario. For example, the current scenario is based on multiple network devices with multiple DCIs. That is, the control resource set pool index value parameter configured by RRC in the control resource set information element has two values, 0 and 1. The terminal device can consider that SSB needs to be grouped.

[0123] Explicit method: Indicate that SSB needs to be grouped through parameters in the serving cell common configuration information element (e.g., ServingCellConfigCommon) and / or the serving cell common system information block configuration information element (e.g., ServingCellConfigCommonSIB). Optionally, it can be indicated in the following three ways:

[0124] (1) Add a parameter in the information element to indicate whether SSB needs to be grouped. If the parameter is enabled, it means that SSB needs to be grouped;

[0125] (2) If a new parameter is added to the information element to indicate the arrangement pattern of the elements, the configuration of this parameter indicates that the SSB needs to be grouped;

[0126] (3) If a new parameter is added to the information element to indicate that the second network device is used for transmission of the SSB, the configuration of this parameter means that the SSB needs to be grouped.

[0127] Optionally, the newly added parameter is a synchronous broadcast block position parameter in the second burst, and / or a group parameter and a group status parameter of the second group, and / or at least one of a short bitmap parameter, a medium bitmap parameter and a long bitmap parameter of the second group.

[0128] Optionally, each element in the first group of SSBs includes X SSBs, and each element in the second group of SSBs includes Y SSBs. The first group of SSBs is associated with a first network device, and the second group of SSBs is associated with a second network device. All elements in the first group of SSBs and the second group of SSBs are arranged in a pattern. Optionally, X and Y are integers, such as 1, 2, 3, 4, etc. In addition, the values ​​of X and Y may be the same or different. The following methods are used to determine the values ​​of X and Y:

[0129] Default mode: X and Y values ​​use the default values;

[0130] Network equipment configuration: Two new parameters are added to the serving cell common configuration information element and / or the serving cell common system information block configuration information element to indicate the values ​​of X and Y. In particular, if the values ​​of X and Y are the same, only one parameter is required to indicate the values ​​of X and Y.

[0131] Optionally, all elements in the first group of SSBs and the second group of SSBs are arranged in a pattern. Optionally, the pattern may be a cyclic pattern or a half-and-half pattern. The pattern may be determined in the following manner:

[0132] By default, a circular pattern is used;

[0133] The default is to use a half-and-half pattern;

[0134] Network equipment configuration: New parameters are added to the serving cell common configuration information element and / or the serving cell common system information block configuration information element to indicate the pattern in which all elements are currently arranged, for example: a circular arrangement pattern or a half-and-half arrangement pattern.

[0135] Optionally, the step of selecting or determining the first group of synchronized broadcast blocks and / or the second group of synchronized broadcast blocks based on radio resource control signaling and / or system information includes at least one of the following:

[0136] Obtaining a first group of synchronized broadcast blocks according to synchronized broadcast block position parameters in the first burst, and / or obtaining a second group of synchronized broadcast blocks according to synchronized broadcast block position parameters in the second burst;

[0137] Grouping candidate synchronized broadcast blocks and / or synchronized broadcast blocks for transmission according to a synchronized broadcast block number parameter of each element and / or an element arrangement pattern parameter to obtain a first group of synchronized broadcast blocks and / or a second group of synchronized broadcast blocks;

[0138] Obtain a first set of synchronized broadcast blocks based on the first set of in-group parameters and / or group status parameters, and / or obtain a second set of synchronized broadcast blocks based on the second set of in-group parameters and / or group status parameters;

[0139] A first set of synchronized broadcast blocks is obtained based on at least one of the first set of short bitmap parameters, medium bitmap parameters and long bitmap parameters, and / or a second set of synchronized broadcast blocks is obtained based on at least one of the second set of short bitmap parameters, medium bitmap parameters and long bitmap parameters.

[0140] Optionally, the synchronization signal and PBCH block (SSB) can be divided into two groups as follows:

[0141] (1) Grouping candidate SSBs: All candidate SSBs are grouped according to the number of SSBs in each element and the element arrangement pattern into two groups of candidate SSBs. Combined with the SSB position parameters in the burst, two groups of SSBs for transmission can be obtained.

[0142] (2) Grouping of SSBs for transmission: The terminal device groups the SSBs for transmission indicated by the SSB position parameter in the burst according to the number of SSBs in each element and the arrangement pattern of the elements, and divides them into two groups of SSBs for transmission.

[0143] (3) Directly indicating two sets of SSBs for transmission: Two sets of SSBs for transmission can be directly obtained through two parameters (for example, ssb-PositionsInBurst and ssb-PositionsInBurst2) or two sets of parameters (for example, two sets of inOneGroup and groupPresence, or two sets of shortBitmap, mediumBitmap, and longBitmap).

[0144] S112: Select or determine a first physical random access channel opportunity based on the first synchronization broadcast block and / or the first downlink control information, and / or select or determine a second physical random access channel opportunity based on the second synchronization broadcast block and / or the second downlink control information.

[0145] Optionally, the step of selecting or determining the first physical random access channel opportunity and / or the second physical random access channel opportunity includes at least one of the following:

[0146] Selecting or determining a first physical random access channel opportunity according to a first synchronization broadcast block index value and / or a first physical random access channel mask index value in the first downlink control information, and / or selecting or determining a second physical random access channel opportunity according to a second synchronization broadcast block index value and / or a second physical random access channel mask index value in the second downlink control information;

[0147] Designing a constraint relationship for the association method between the synchronization broadcast block and the physical random access channel opportunity, obtaining a first physical random access channel opportunity based on the constraint relationship and the first synchronization broadcast block, and / or obtaining a second physical random access channel opportunity based on the constraint relationship and the second synchronization broadcast block;

[0148] If the first preset condition is met, obtaining a first physical random access channel opportunity according to the first synchronized broadcast block, and / or selecting one from subsequently available physical random access channel opportunities corresponding to the second synchronized broadcast block as a second physical random access channel opportunity;

[0149] If a second preset condition is met, obtaining a first physical random access channel opportunity according to the first synchronization broadcast block, and / or obtaining a second physical random access channel opportunity according to the second synchronization broadcast block;

[0150] If the third preset condition is met, the network device identifier is added to the random access wireless network temporary identifier calculation formula to obtain an improved random access wireless network temporary identifier, and the first physical random access channel opportunity is obtained according to the first synchronization broadcast block, and / or the second physical random access channel opportunity is obtained according to the second synchronization broadcast block, and the improved random access wireless network temporary identifier is associated with the first physical random access channel opportunity and / or the second physical random access channel opportunity.

[0151] Optionally, the first improved random access radio network temporary identifier is associated with a first physical random access channel opportunity, and / or the second improved random access radio network temporary identifier is associated with a second physical random access channel opportunity.

[0152] Optionally, the first preset condition includes: if the first physical random access channel timing obtained according to the first synchronization broadcast block and the second synchronization broadcast block is the same as the second physical random access channel timing in the time domain, and the terminal device does not support sending random access preambles to two network devices at the same time.

[0153] Optionally, the second preset condition includes: if the first physical random access channel occasion and the second physical random access channel occasion obtained according to the first synchronized broadcast block and the second synchronized broadcast block are different in the time domain, and the terminal device does not support sending random access preambles to two network devices simultaneously. The random access channel occasions (e.g., PRACH occasions) are different in the time domain, which means that the two PRACH occasions are separated by at least X time units in the time domain, where X is an integer.

[0154] Optionally, the third preset condition includes: if the first physical random access channel timing obtained according to the first synchronization broadcast block and the second synchronization broadcast block is the same as the second physical random access channel timing, and the terminal device supports sending random access preambles to two network devices at the same time.

[0155] This embodiment, through the above-mentioned solution, specifically selects or determines a first group of synchronization broadcast blocks and / or a second group of synchronization broadcast blocks based on radio resource control signaling and / or system information; selects or determines a first physical random access channel occasion based on the first synchronization broadcast block and / or the first downlink control information; and / or selects or determines a second physical random access channel occasion based on the second synchronization broadcast block and / or the second downlink control information. In a scenario with multiple network devices, based on the SSB configured on a specific network device, a terminal device can select two PRACH occasions to send random access preambles to the two network devices, and can distinguish between the two different random access procedures, thereby improving the accuracy of timing adjustment.

[0156] Fourth embodiment

[0157] 8 is a flow chart of a control method according to a fourth embodiment. The method of the embodiment of the present application can be applied to a network device (such as a base station). The control method includes the following steps:

[0158] S0: Send downlink information so that the terminal device can adjust the uplink timing based on the downlink information.

[0159] Optionally, the downlink information sent by the network device includes at least one of radio resource control signaling, system information, downlink control information and synchronization broadcast block.

[0160] Optionally, the wireless resource control signaling and / or system information includes a synchronization broadcast block position parameter in a burst, a synchronization broadcast block number parameter for each element, an element arrangement pattern parameter, a group parameter, a group status parameter, a short bitmap parameter, a medium bitmap parameter, and at least one of a long bitmap parameter.

[0161] Optionally, the downlink control information includes first downlink control information and / or second downlink control information.

[0162] Optionally, after receiving the downlink information sent by the network device, the terminal device selects or determines the physical random access channel timing according to the downlink information, sends the corresponding random access preamble at the physical random access channel timing, receives the random access response corresponding to the random access preamble in the random access response window, and adjusts the timing of the physical uplink channel and / or reference signal according to the timing advance command in the random access response.

[0163] Optionally, in the process of selecting or determining the physical random access channel timing based on downlink information, the terminal device selects or determines the first group of synchronization broadcast blocks and / or the second group of synchronization broadcast blocks based on the wireless resource control signaling and / or system information in the downlink information; selects or determines the first physical random access channel timing based on the first synchronization broadcast block and / or the first downlink control information, and / or selects or determines the second physical random access channel timing based on the second synchronization broadcast block and / or the second downlink control information.

[0164] Optionally, the terminal device determines how to perform SSB grouping through various parameters, including the terminal device selecting or determining the synchronous broadcast block for transmission based on the synchronous broadcast block position parameter in the burst; and / or, adding a second synchronous broadcast block position parameter in the burst to the service cell common system information block configuration information element and / or the service cell common configuration information element; and / or, adding a second group of in-group parameters and group status parameters, and / or at least one of the second group of short bitmap parameters, medium bitmap parameters and long bitmap parameters to the synchronous broadcast block position parameter in the burst.

[0165] Optionally, the method further comprises at least one of the following:

[0166] The terminal device obtains a first group of synchronized broadcast blocks according to the synchronized broadcast block position parameter in the first burst, and / or obtains a second group of synchronized broadcast blocks according to the synchronized broadcast block position parameter in the second burst;

[0167] The terminal device groups the candidate synchronized broadcast blocks and / or the synchronized broadcast blocks for transmission according to the synchronized broadcast block number parameter of each element and / or the element arrangement pattern parameter to obtain a first group of synchronized broadcast blocks and / or a second group of synchronized broadcast blocks;

[0168] The terminal device obtains a first group of synchronized broadcast blocks according to the first group of in-group parameters and / or group status parameters, and / or obtains a second group of synchronized broadcast blocks according to the second group of in-group parameters and / or group status parameters;

[0169] The terminal device obtains a first group of synchronized broadcast blocks based on at least one of the first group of short bitmap parameters, medium bitmap parameters and long bitmap parameters, and / or obtains a second group of synchronized broadcast blocks based on at least one of the second group of short bitmap parameters, medium bitmap parameters and long bitmap parameters.

[0170] Optionally, the method further comprises at least one of the following:

[0171] The terminal device selects or determines the first synchronization broadcast block based on the first downlink control information and / or the first group of synchronization broadcast blocks;

[0172] The terminal device selects or determines the second synchronization broadcast block based on the second downlink control information and / or the second group of synchronization broadcast blocks.

[0173] Optionally, the terminal device selects or determines the first physical random access channel opportunity according to the first synchronization broadcast block index value and / or the first physical random access channel mask index value in the first downlink control information, and / or selects or determines the second physical random access channel opportunity according to the second synchronization broadcast block index value and / or the second physical random access channel mask index value in the second downlink control information;

[0174] Optionally, the network device designs a constraint relationship for an association method between a synchronization broadcast block and a physical random access channel opportunity, and the terminal device obtains a first physical random access channel opportunity based on the constraint relationship and the first synchronization broadcast block, and / or obtains a second physical random access channel opportunity based on the constraint relationship and the second synchronization broadcast block;

[0175] If the first preset condition is met, the terminal device obtains the first physical random access channel opportunity according to the first synchronization broadcast block, and / or selects one from the subsequently available physical random access channel opportunities corresponding to the second synchronization broadcast block as the second physical random access channel opportunity;

[0176] If the second preset condition is met, the terminal device obtains the first physical random access channel opportunity according to the first synchronization broadcast block, and / or obtains the second physical random access channel opportunity according to the second synchronization broadcast block;

[0177] If the third preset condition is met, the terminal device adds the network device identifier to the random access wireless network temporary identifier calculation formula to obtain an improved random access wireless network temporary identifier, and obtains the first physical random access channel timing based on the first synchronization broadcast block, and / or obtains the second physical random access channel timing based on the second synchronization broadcast block, and associates the improved random access wireless network temporary identifier with the first physical random access channel timing and / or the second physical random access channel timing.

[0178] Optionally, after the network device receives the first random access preamble sent by the terminal device, the network device sends a random access response including a first timing advance command, and optionally, the first timing advance command is used for the terminal device to perform timing adjustment on the first physical uplink channel and / or the reference signal;

[0179] Optionally, after the network device receives the second random access preamble sent by the terminal device, it sends a random access response including a second timing advance command. Optionally, the second timing advance command is used for the terminal device to perform timing adjustment on the second physical uplink channel and / or reference signal.

[0180] Optionally, the network device receives the first physical uplink channel and / or reference signal that is timing adjusted and sent by the terminal device after the first timing advance command; and / or the network device receives the second physical uplink channel and / or reference signal that is timing adjusted and sent by the terminal device after the second timing advance command, and the timing adjustment process is completed.

[0181] This embodiment uses the above-mentioned scheme, specifically by sending downlink information so that the terminal device adjusts the uplink timing based on the downlink information. In multiple network device scenarios, the random access process can be performed based on a specific network device, so that the timing calculation and adjustment of the physical uplink channel and / or reference signal of any network device are more accurate.

[0182] Fifth embodiment

[0183] Based on the above embodiments of the present application, this embodiment further discloses the control method in the above embodiments.

[0184] In an embodiment of the present application, a terminal device may be in a single network device or multiple network device scenario. The terminal device implicitly and / or explicitly determines when to group synchronization broadcast blocks (SSBs), i.e., associating different SSBs with different network devices. In addition, the terminal device determines how to group SSBs based on various parameters, including indicating SSB grouping based on the number of SSBs in each element and / or the arrangement pattern of the elements.

[0185] Optionally, all candidate SSBs are grouped according to the number of SSBs per element and the element arrangement pattern, into two groups of candidate SSBs, each associated with a network device. Based on the subcarrier spacing (SCS) of the SSBs, seven cases can be classified, from Case A to Case G.

[0186] Optionally, for Case A (i.e., 15kHz SCS): the index value of the first symbol of the candidate SSB is: {2,8}+14*n. For non-shared spectrum channel access, it can be divided into two cases according to the carrier frequency size. When the carrier frequency is less than or equal to 3GHz, n=0,1, and a maximum of 4 SSBs can be transmitted in each half frame (Lmax=4). When the carrier frequency is in frequency range 1 (FR1, Frequency Range 1) and greater than 3GHz, n=0,1,2,3, and a maximum of 8 SSBs can be transmitted in each half frame (Lmax=8).

[0187] Optionally, when the carrier frequency is less than or equal to 3 GHz, and X=Y=2 and all elements are arranged in a cyclic pattern or a half-and-half pattern, the first and second candidate SSBs are associated with the first network device, and the third and fourth candidate SSBs are associated with the second network device. Referring to Figure 9, Figure 9 is a first principle schematic diagram of the control method according to the fifth embodiment, and the arrangement of all candidate SSBs is shown in Figure 9.

[0188] Optionally, when the carrier frequency is within the frequency range 1 and is greater than 3 GHz, and X=Y=2 and all elements are arranged in a cyclic pattern, the first, second, fifth and sixth candidate SSBs are associated with the first network device, and the third, fourth, seventh and eighth candidate SSBs are associated with the second network device. Referring to Figure 10, Figure 10 is a second principle schematic diagram of the control method according to the fifth embodiment, and the arrangement of all candidate SSBs is shown in Figure 10.

[0189] Optionally, when the carrier frequency is within the frequency range 1 and is greater than 3 GHz, and X=Y=4 and all elements are arranged in a half-and-half pattern, the first, second, third and fourth candidate SSBs are associated with the first network device, and the fifth, sixth, seventh and eighth candidate SSBs are associated with the second network device. Referring to Figure 11, Figure 11 is a third principle schematic diagram of the control method according to the fifth embodiment, and the arrangement of all candidate SSBs is shown in Figure 11.

[0190] Optionally, the terminal device groups all candidate SSBs according to the number of SSBs of each element and the arrangement pattern of the elements, and divides them into two groups of candidate SSBs, and each group of candidate SSBs is associated with a network device.

[0191] Optionally, one or more SSBs for transmission are indicated by an SSB position parameter in a burst (e.g., ssb-PositionsInBurst) in a serving cell common configuration information element and / or a serving cell common system information block configuration information element. If the one or more SSBs for transmission are candidate SSBs corresponding to a first network device, the one or more SSBs for transmission are sent from the first network device; and / or, if the one or more SSBs for transmission are candidate SSBs corresponding to a second network device, the one or more SSBs for transmission are sent from the second network device.

[0192] Optionally, the terminal device measures the SSB sent from the first network device and finds the best SSB therefrom for use in a subsequent random access channel (RACH) process; and / or, the terminal device measures the SSB sent from the second network device and finds the best SSB therefrom for use in a subsequent RACH process.

[0193] This embodiment uses the above solution to specifically group all candidate SSBs according to the number of SSBs in each element and the arrangement pattern of the elements, and divide them into two groups of candidate SSBs, each group of candidate SSBs being associated with a network device. Since the number of SSBs in each element (i.e., X / Y) can be flexibly configured, and the arrangement pattern of the elements (e.g., a cyclic arrangement pattern or a half-and-half arrangement pattern) can be flexibly configured, the candidate SSBs are grouped according to an arrangement pattern of the elements, and the arrangement of the elements is relatively concise and regular, and / or, the SSB position parameter in the burst of the existing protocol can be reused to indicate the SSB used for transmission, without the need for additional enhancement of the SSB used for transmission.

[0194] Sixth embodiment

[0195] Based on the above embodiments of the present application, this embodiment further discloses the control method in the above embodiments.

[0196] In an embodiment of the present application, the SSBs for transmission indicated by the SSB position parameter in the burst (for example, ssb-PositionsInBurst) in the serving cell common configuration information element and / or the serving cell common system information block configuration information element are grouped according to the number of SSBs in each element and the arrangement pattern of the elements, and are divided into two groups of SSBs for transmission, each group being sent from one network device.

[0197] Optionally, the SSB position parameter in the burst in the serving cell common configuration information element and / or the serving cell common system information block configuration information element indicates the SSB used for transmission. Optionally, the number of SSBs used for transmission is at least 2. Optionally, the number of SSBs used for transmission is an even number.

[0198] Optionally, for Case A (i.e., 15kHz SCS): the index value of the first symbol of the candidate SSB is: {2,8}+14*n. For non-shared spectrum channel access, when the carrier frequency is in frequency range 1 and greater than 3GHz, n = 0, 1, 2, 3, and a maximum of 8 SSBs can be transmitted in each half frame (Lmax = 8).

[0199] Optionally, when the SSB position parameter in the burst indicates that the second to seventh SSBs are SSBs for transmission, and X=Y=2 and the SSBs for transmission are arranged in a cyclic pattern, the second, third, sixth and seventh SSBs for transmission are sent from the first network device, and the fourth and fifth SSBs for transmission are sent from the second network device. Referring to Figure 12, Figure 12 is a first principle schematic diagram of the control method according to the sixth embodiment, and the arrangement of all SSBs for transmission is shown in Figure 12.

[0200] Optionally, when the SSB position parameter in the burst indicates that the second to seventh SSBs are SSBs for transmission, and X=Y=2 and the SSBs for transmission are arranged in a half-and-half pattern, the second, third and fourth SSBs for transmission are sent from the first network device, and the fifth, sixth and seventh SSBs for transmission are sent from the second network device. Referring to Figure 13, Figure 13 is a second principle schematic diagram of the control method according to the sixth embodiment, and the arrangement of all SSBs for transmission is shown in Figure 13.

[0201] Optionally, the terminal device groups the SSBs for transmission indicated by the SSB position parameter in the burst (for example, ssb-PositionsInBurst) in the serving cell common configuration information element and / or the serving cell common system information block configuration information element according to the number of SSBs in each element and the arrangement pattern of the elements, and divides them into two groups of SSBs for transmission, each group being sent from one network device.

[0202] Optionally, the terminal device measures the SSB sent from the first network device and finds the best SSB therefrom for use in a subsequent RACH process; and / or, the terminal device measures the SSB sent from the second network device and finds the best SSB therefrom for use in a subsequent RACH process.

[0203] This embodiment, through the above-described scheme, specifically groups the SSBs for transmission indicated by the SSB position parameter in the burst in the serving cell common configuration information element and / or the serving cell common system information block configuration information element according to the number of SSBs in each element and the element arrangement pattern, into two groups of SSBs for transmission, each group being sent from a network device. Because the number of SSBs in each element (i.e., X / Y) can be flexibly configured, and the element arrangement pattern (e.g., a cyclic arrangement pattern or a half-and-half arrangement pattern) can be flexibly configured, directly grouping the SSBs for transmission according to a single element arrangement pattern is simple and direct, and the element arrangement is relatively concise and regular.

[0204] Seventh embodiment

[0205] Based on the above embodiments of the present application, this embodiment further discloses the control method in the above embodiments.

[0206] In an embodiment of the present application, two groups of SSBs for transmission are also directly indicated through the serving cell common system information block configuration information element and / or the serving cell common configuration information element.

[0207] Optionally, a serving cell common system information block configuration information element (eg, ServingCellConfigCommonSIB) is configured through system information block 1 (eg, SIB1), and the information element is used to provide cell parameters.

[0208] Optionally, directly adding an SSB position parameter in the second burst to indicate the SSB to be used for transmission by the second network device specifically includes:

[0209] A second SSB position parameter in burst (e.g., ssb-PositionsInBurst2) is added to the serving cell common system information block configuration information element. This parameter includes two parameters: a group parameter (e.g., inOneGroup) and a group status parameter (e.g., groupPresence). The first SSB position parameter in burst (e.g., ssb-PositionsInBurst) is used to indicate the SSB used for transmission by the first network device, and the second SSB position parameter in burst (e.g., ssb-PositionsInBurst2) is used to indicate the SSB used for transmission by the second network device.

[0210] Optionally, the parameters are used as follows:

[0211] Optionally, in a group parameter: a parameter in a group including the SSB position parameter in the first burst and the SSB position parameter in the second burst. When a maximum of 4 SSBs can be transmitted in each half-frame, only the leftmost 4 bits of this parameter are valid; when a maximum of 8 or 64 SSBs can be transmitted in each half-frame, all 8 bits of this parameter are valid. When a maximum of 4 or 8 SSBs can be transmitted in each half-frame, the first / leftmost bit in this parameter corresponds to SSB 0, the second bit corresponds to SSB 1, and so on. When a maximum of 64 SSBs can be transmitted in each half-frame, the first / leftmost bit in this parameter corresponds to the first SSB in a group (for example: SSB 0, SSB 8, and so on), and the second bit corresponds to the second SSB in a group (for example: SSB 1, SSB 9, and so on). If a bit value in this parameter is 0, it means that the SSB corresponding to this bit is not used for transmission; if a bit value in this parameter is 1, it means that the SSB corresponding to this bit is used for transmission.

[0212] Optionally, the group status parameter includes the group status parameter in the first burst SSB position parameter and the second burst SSB position parameter. When a maximum of 64 SSBs can be transmitted in each half-frame, the first / leftmost bit in this parameter corresponds to SSBs 0-7, the second bit corresponds to SSBs 8-15, and so on. A bit value of 0 in this parameter indicates that the SSB corresponding to that bit is not used for transmission; a bit value of 1 in this parameter indicates that the SSB corresponding to that bit is used for transmission.

[0213]

[0214] Optionally, a second set of parameters is added to the SSB position parameter in the burst to indicate the SSB to be used for transmission by the second network device, specifically including:

[0215] Add two parameters, namely, a second in-group parameter (e.g., inOneGroup2) and a second group status parameter (e.g., groupPresence2), to the SSB position parameter in the burst (e.g., ssb-PositionsInBurst). The first in-group parameter (e.g., inOneGroup) and the first group status parameter (e.g., groupPresence) are used to indicate the SSB for transmission of the first network device, and the second in-group parameter (e.g., inOneGroup2) and the second group status parameter (e.g., groupPresence2) are used to indicate the SSB for transmission of the second network device. Optionally, the use of each parameter is as follows:

[0216] Optionally, in a group parameter: includes the first in a group parameter and the second in a group parameter. When a maximum of 4 SSBs can be transmitted in each half frame, only the leftmost 4 bits of this parameter are valid; when a maximum of 8 or 64 SSBs can be transmitted in each half frame, all 8 bits of this parameter are valid. When a maximum of 4 or 8 SSBs can be transmitted in each half frame, the first / leftmost bit in this parameter corresponds to SSB 0, the second bit corresponds to SSB 1, and so on. When a maximum of 64 SSBs can be transmitted in each half frame, the first / leftmost bit in this parameter corresponds to the first SSB in a group (for example: SSB 0, SSB8, and so on), and the second bit corresponds to the second SSB in a group (for example: SSB 1, SSB 9, and so on). If a bit value in this parameter is 0, it means that the SSB corresponding to this bit is not used for transmission; if a bit value in this parameter is 1, it means that the SSB corresponding to this bit is used for transmission.

[0217] Optionally, the group status parameter includes a first group status parameter and a second group status parameter. When a maximum of 64 SSBs can be transmitted in each half-frame, the first / leftmost bit in this parameter corresponds to SSBs 0-7, the second bit corresponds to SSBs 8-15, and so on. A bit value of 0 in this parameter indicates that the corresponding SSB is not used for transmission; a bit value of 1 in this parameter indicates that the corresponding SSB is used for transmission.

[0218]

[0219] Optionally, the indication through the serving cell common configuration information element includes directly adding an SSB position parameter in a second burst and / or adding a second set of parameters to the SSB position parameter in the burst to indicate the SSB used for transmission by the second network device.

[0220] Optionally, directly adding the SSB position parameter in the second burst to indicate the SSB used by the second network device for transmission specifically includes:

[0221] A second burst SSB position parameter (e.g., ssb-PositionsInBurst2) is added to the serving cell common configuration information element. This parameter includes three parameters: a short bitmap parameter (e.g., shortBitmap), a medium bitmap parameter (e.g., mediumBitmap), and a long bitmap parameter (e.g., longBitmap). The first burst SSB position parameter (e.g., ssb-PositionsInBurst) is used to indicate the SSB used for transmission by the first network device, and the second burst SSB position parameter (e.g., ssb-PositionsInBurst2) is used to indicate the SSB used for transmission by the second network device.

[0222] Optionally, the parameters are used as follows:

[0223] Short bitmap parameter: This parameter includes the SSB position parameter in the first burst and the SSB position parameter in the second burst. When a maximum of four SSBs can be transmitted in each half-frame, this parameter indicates the SSB to be transmitted by the corresponding network device.

[0224] Middle bitmap parameter: This parameter includes the middle bitmap parameter in the first burst SSB position parameter and the second burst SSB position parameter. When a maximum of eight SSBs can be transmitted in each half-frame, this parameter indicates the SSB to be used for transmission by the corresponding network device.

[0225] Long bitmap parameter: This parameter includes the long bitmap parameters in the first burst SSB position parameter and the second burst SSB position parameter. When a maximum of 64 SSBs can be transmitted in each half-frame, this parameter is used to indicate the SSBs used for transmission by the corresponding network device.

[0226]

[0227] Optionally, adding a second set of parameters through the SSB position parameter in the burst to indicate the SSB used by the second network device for transmission specifically includes:

[0228] Add three parameters, namely, a second short bitmap parameter (e.g., shortBitmap2), a second medium bitmap parameter (e.g., mediumBitmap2), and a second long bitmap parameter (e.g., longBitmap2) to the SSB position parameter in the burst (e.g., ssb-PositionsInBurst). The first short bitmap parameter (e.g., shortBitmap), the first medium bitmap parameter (e.g., mediumBitmap), and the first long bitmap parameter (e.g., longBitmap) are used to indicate the SSB for transmission of the first network device; the second short bitmap parameter (e.g., shortBitmap2), the second medium bitmap parameter (e.g., mediumBitmap2), and the second long bitmap parameter (e.g., longBitmap2) are used to indicate the SSB for transmission of the second network device.

[0229] Optionally, the parameters are used as follows:

[0230] Short bitmap parameter: includes the first short bitmap parameter and the second short bitmap parameter. When a maximum of four bits can be transmitted in each half-frame, this parameter is used to indicate the SSB used for transmission by the corresponding network device.

[0231] Mid-bitmap parameter: includes the first mid-bitmap parameter and the second mid-bitmap parameter. When a maximum of 8 bits can be transmitted in each half-frame, this parameter is used to indicate the SSB used for transmission by the corresponding network device.

[0232] Long bitmap parameter: includes the first long bitmap parameter and the second long bitmap parameter. When a maximum of 64 bits can be transmitted in each half-frame, this parameter is used to indicate the SSB used for transmission by the corresponding network device.

[0233]

[0234]

[0235] Optionally, the SSBs used for transmission by the first and second network devices can be obtained through two or a group of parameters. Any SSB used for transmission by the first network device can be different from the SSB used for transmission by the second network device. For example, if SSB 0 is the SSB used for transmission by the first network device, then SSB 0 is not the SSB used for transmission by the second network device. In addition, if the terminal device capabilities support it, the same SSB can be indicated for different network devices. In this case, the configuration of these two or a group of parameters is not restricted, and the SSBs used for transmission by the first and second network devices can be flexibly indicated.

[0236] Optionally, the terminal device can directly obtain the SSB for transmission of the first and second network devices through two parameters (for example, ssb-PositionsInBurst and ssb-PositionsInBurst2) or two sets of parameters (for example, two sets of inOneGroup and groupPresence, or two sets of shortBitmap, mediumBitmap and longBitmap).

[0237] Optionally, the terminal device measures the SSB sent from the first network device and finds the best SSB therefrom for use in a subsequent RACH process; and / or, the terminal device measures the SSB sent from the second network device and finds the best SSB therefrom for use in a subsequent RACH process.

[0238] This embodiment, through the above solution, specifically uses the serving cell common system information block configuration information element and / or the serving cell common configuration information element to directly indicate two sets of SSBs for transmission. This allows for flexible instruction for two network devices to transmit any SSBs, regardless of the element arrangement pattern. When transmitting the same number of SSBs, not only multiple element arrangement patterns but also other irregular arrangement patterns can be implemented, allowing for flexible adjustment of SSB coverage.

[0239] Eighth embodiment

[0240] Based on the above embodiments of the present application, this embodiment further discloses the control method in the above embodiments.

[0241] In an embodiment of the present application, if the terminal device selects two optimal SSBs for two network devices and obtains two PRACH occasions that are identical in the time domain based on the two optimal SSBs, then the terminal device uses the same PRACH occasion in the time domain when sending random access preambles (e.g., preambles) to the two network devices. This places high demands on the capabilities of the terminal device. If the terminal device does not support sending random access preambles to the first network device and the second network device at the same time, the following methods are designed to avoid sending random access preambles to the two network devices on the same PRACH occasion in the time domain:

[0242] Send a random access preamble on the subsequent available PRACH occasion corresponding to the SSB;

[0243] Design constraints on the association method between SSB and PRACH occasion;

[0244] The random access preamble is directly sent on different PRACH occasions in the time domain.

[0245] Optionally, for sending a random access preamble on a subsequently available PRACH occasion corresponding to an SSB, if the terminal device needs to send random access preambles to two network devices, and the best SSBs selected for the two network devices are both associated with the same PRACH occasion in the time domain, the terminal device does not desire to send random access preambles to the two network devices on the same PRACH occasion in the time domain. That is, the terminal device selects two different PRACH occasions in the time domain to send random access preambles to the two network devices. In this case, the terminal device first sends a random access preamble to one of the network devices, which can be the first network device or the second network device. Simultaneously, the terminal device obtains the subsequently available PRACH occasion associated with the other network device based on the best SSB corresponding to the other network device, and selects a PRACH occasion from the PRACH occasion to send the random access preamble to the network device. Optionally, the terminal device can select the next available PRACH occasion to send the random access preamble. Optionally, the subsequently available PRACH occasion can be a subsequently available PRACH occasion in the time domain. Optionally, the subsequently available PRACH occasion refers to the one with the larger PRACH occasion index value.

[0246] Referring to FIG14 , FIG14 is a first principle diagram of a control method according to the eighth embodiment. As shown in FIG14 , a subsequently available PRACH occasion is selected in the time domain. Optionally, 8 SSBs are transmitted in one SSB burst period, the frequency division multiplexing parameter of message 1 (e.g., msg1-FDM) is 4, and the number of SSBs N per random access channel occasion is 2. Optionally, N is provided by the number of SSBs per random access channel occasion and the contention-based preamble parameter per SSB (e.g., ssb-perRACH-OccasionAndCB-PreamblesPerSSB). At this time, the best SSBs corresponding to the first network device and the second network device are SSB 0 and SSB 1, respectively. The terminal device sends a random access preamble to the first network device in PRACH occasion 1. For the second network device, the PRACH occasion 1 of the next random access channel configuration period is a subsequently available PRACH occasion. The terminal device sends a random access preamble to the second network device in the PRACH occasion 1 of the next period.

[0247] Optionally, a constraint relationship is designed for the method of associating SSBs with PRACH occasions, and the terminal device selects two optimal SSBs for two network devices, thereby obtaining two PRACH occasions that are different in the time domain based on the two optimal SSBs. There is a design method for the following constraint relationship: when in a scenario with multiple network devices, the network device sets the frequency division multiplexing parameter of message 1 to 1 and / or sets the number of SSBs N for each random access channel occasion to 1. The terminal device selects two optimal SSBs for the two network devices, namely: a first SSB and a second SSB, obtains a first PRACH occasion based on the constraint relationship and the first SSB, and / or obtains a second PRACH occasion based on the constraint relationship and the second SSB, wherein the two PRACH occasions are different in the time domain.

[0248] Optionally, if the terminal device selects two optimal SSBs for two network devices, and the two PRACH occasions associated with these two SSBs are separated by at least X time units in the time domain, that is, different PRACH occasions in the time domain, the terminal device can directly send random access preambles to the two network devices on the corresponding PRACH occasions. Optionally, X is an integer, which can be obtained by at least one method such as a default value setting, obtaining according to the terminal device capability, and being indicated by the network device; the time unit can be at least one of a symbol (e.g., symbol), a time slot (e.g., slot), a subframe (e.g., subframe), a frame (e.g., frame), a millisecond (e.g., ms), and a second (e.g., s). As long as different PRACH occasions in the time domain are selected based on the optimal SSBs corresponding to the two network devices, the terminal device can directly send random access preambles to the two network devices on the corresponding PRACH occasions.

[0249] Referring to FIG15 , FIG15 is a schematic diagram illustrating a second principle of a control method according to the eighth embodiment. As shown in FIG15 , the two PRACH occasions associated with the two best SSBs are different in the time domain. Optionally, eight SSBs are transmitted in one SSB burst period, the frequency division multiplexing parameter of message 1 is 4, and the number of SSBs N per random access channel opportunity is 1. At this time, the best SSBs corresponding to the first network device and the second network device are SSB 0 and SSB 5, respectively. The terminal device sends random access preambles to the first network device and the second network device on PRACH occasion 1 and PRACH occasion 6, respectively.

[0250] Through the above scheme, this embodiment uses the random access preamble to send random access preambles to two network devices at the same time if the terminal device does not support the sending of random access preambles to two network devices at the same time. The random access preamble is sent on a subsequently available PRACH occasion corresponding to the SSB; and / or a constraint relationship is designed for the association method between the SSB and the PRACH occasion; and / or the random access preamble is sent directly on a PRACH occasion that is different in the time domain. The terminal device can select two different PRACH occasions to send random access preambles to the two network devices. Optionally, the two different PRACH occasions are different in the time domain to avoid sending random access preambles to the two network devices at the same time.

[0251] Ninth embodiment

[0252] Based on the above embodiments of the present application, this embodiment further discloses the control method in the above embodiments.

[0253] In an embodiment of the present application, if the terminal device supports sending random access preambles to two network devices at the same time, and the best SSBs selected for the two network devices are associated with the same PRACH occasion in the time domain, the terminal device can send random access preambles to the first network device and the second network device at the same PRACH occasion in the time domain. Therefore, if the terminal device supports sending random access preambles to two network devices at the same time, regardless of whether the two PRACH occasions are the same, the terminal device can directly send random access preambles to the two network devices at the two PRACH occasions. Optionally, there are the following examples: a first example: the terminal device can directly send random access preambles to two network devices respectively on two identical PRACH occasions, wherein the two PRACH occasions are identical in both time domain and frequency domain; a second example: the terminal device can directly send random access preambles to two network devices respectively on two identical PRACH occasions in time domain, wherein the two PRACH occasions are identical in time domain but different in frequency domain; a third example: the terminal device can directly send random access preambles to two network devices respectively on two identical PRACH occasions in frequency domain, wherein the two PRACH occasions are identical in frequency domain but different in time domain; a fourth example: the terminal device can directly send random access preambles to two network devices respectively on two different PRACH occasions, wherein the two PRACH occasions are different in both time domain and frequency domain.

[0254] If the two PRACH occasions are the same, in order to distinguish the two random access procedures, the embodiments of the present application provide the following two methods:

[0255] Directly distinguish by controlling the resource pool index parameter identifier;

[0256] Distinguished by enhanced random access wireless network temporary identity.

[0257] Optionally, the terminal device may select two random access preambles to be sent to two network devices respectively, and monitor / receive a first physical downlink control channel according to a random access wireless network temporary identifier in a control resource set whose control resource set pool index parameter value is 0, where the downlink control channel includes downlink control information for scheduling a random access response corresponding to the first random access preamble; and monitor / receive a second physical downlink control channel according to a random access wireless network temporary identifier in a control resource set whose control resource set pool index parameter value is 1, where the downlink control channel includes downlink control information for scheduling a random access response corresponding to the second random access preamble.

[0258] Optionally, since each random access process corresponds to a random access radio network temporary identifier (RA-RNTI), it can be used to distinguish random access processes. The network device identifier can be added to the existing random access radio network temporary identifier calculation formula to achieve the purpose of distinguishing random access preambles sent to two different network devices. Optionally, the network device identifier is added after the uplink carrier index value (e.g., ul_carrier_id) in the existing random access radio network temporary identifier calculation formula. The specific RA-RNTI calculation formula is:

[0259] RA-RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×(ul_carrier_id+G)

[0260] Among them, s_id is the first OFDM symbol index value of PRACH occasion, t_id is the index value of the first time slot of PRACH occasion in a system frame, f_id is the index value of PRACH occasion in the frequency domain, and ul_carrier_id is the index value of the uplink carrier of the random access preamble transmission. G is the network device identifier, and the following options are possible: a) The value of G is consistent with the value of the control resource set pool index parameter (for example: coresetPoolIndex), for example: coresetPoolIndex is 0 to identify the first network device, and the value of G is 0 at this time; coresetPoolIndex is 1 to identify the second network device, and the value of G is 1 at this time; b) Use the index value of the SSB group to identify; c) Since the value of ul_carrier_id is 0 or 1, the value of G can be a value greater than 1 to distinguish the network device identifier, for example: G is 2 to indicate that the random access is directed to the first network device before sending, G is 3 to indicate that the random access is directed to the second network device before sending, and vice versa; d) G depends on the timing advance group index value (TAG, Timing Advance Group), for example: the timing advance group index value is 0, G depends on 0; the timing advance group index value is 1, G depends on 1.

[0261] Optionally, in a control resource set whose control resource set pool index parameter value is 0, a first physical downlink control channel is monitored / received according to the enhanced random access wireless network temporary identifier corresponding to the first network device, and the downlink control channel includes downlink control information for scheduling a random access response corresponding to the first random access preamble; and / or, in a control resource set whose control resource set pool index parameter value is 1, a second physical downlink control channel is monitored / received according to the enhanced random access wireless network temporary identifier corresponding to the second network device, and the downlink control channel includes downlink control information for scheduling a random access response corresponding to the second random access preamble.

[0262] In this embodiment, through the above solution, if the terminal device supports sending random access preambles to two network devices simultaneously, distinguishing them by using a control resource set pool index parameter identifier and / or an enhanced random access radio network temporary identifier, the terminal device can send random access preambles to the two network devices via two identical PRACH occasions in the time domain, and can distinguish between the two different random access procedures.

[0263] Tenth embodiment

[0264] Based on the above embodiments of the present application, this embodiment further discloses the control method in the above embodiments.

[0265] In an embodiment of the present application, in a scenario of multiple network devices based on multiple downlink control information, different network devices can be distinguished by the value of the control resource set pool index parameter (for example: coresetPoolIndex), for example: the physical downlink control channel transmitted in the control resource set with a control resource set pool index parameter value of 0 or other physical channels / reference signals scheduled by the physical downlink control channel are all associated with the first network device; the physical downlink control channel transmitted in the control resource set with a control resource set pool index parameter value of 1 or other physical channels / reference signals scheduled by the physical downlink control channel are all associated with the second network device.

[0266] Optionally, the terminal device performs timing adjustment on the physical uplink channel and / or reference signal according to the timing advance command in the random access response, including uplink timing adjustment based on non-competition random access and / or uplink timing adjustment based on competition random access.

[0267] Optionally, in a scenario of multiple network devices based on multiple downlink control information, a non-contention-based random access process may be performed on two network devices respectively, and the steps are as follows:

[0268] Step 1: Transmitting a first physical downlink control channel from a control resource set with a control resource set pool index parameter value of 0, the first physical downlink control channel including downlink control information (e.g., DCI), that is, sending downlink control information from a first network device, the downlink control information including a first random access preamble index value (e.g., Random Access Preamble index), a first SSB index value (e.g., SS / PBCH index), and a first physical random access channel mask index value (e.g., PRACH Mask Index); and / or transmitting a second physical downlink control channel from a control resource set with an index parameter value of 1, the second physical downlink control channel including downlink control information, that is, sending downlink control information from a second network device, the downlink control information including a second random access preamble index value, a second SSB index value, and a second physical random access channel mask index value. Optionally, when the first random access preamble index value is not all 0, it indicates that non-contention-based random access is triggered; and / or, when the second random access preamble index value is not all 0, it indicates that non-contention-based random access is triggered. When non-contention-based random access is triggered, the random access preamble index value is configured by a random access preamble index value parameter (e.g., ra-PreambleIndex). Optionally, the SSBs for transmission are divided into two groups, corresponding to the first and second network devices, respectively. The first network device selects a first SSB index value from the SSBs for transmission corresponding to the first network device, and / or the second network device selects a second SSB index value from the SSBs for transmission corresponding to the second network device. The two groups of SSBs for transmission are grouped in the following manner:

[0269] (1) Grouping candidate SSBs: All candidate SSBs are grouped according to the number of SSBs in each element and the element arrangement pattern into two groups of candidate SSBs. Combined with the SSB position parameters in the burst, two groups of SSBs for transmission can be obtained.

[0270] (2) Grouping of SSBs for transmission: The terminal device groups the SSBs for transmission indicated by the SSB position parameter in the burst according to the number of SSBs in each element and the arrangement pattern of the elements, and divides them into two groups of SSBs for transmission.

[0271] (3) Directly indicating two sets of SSBs for transmission: Two sets of SSBs for transmission can be directly obtained through two parameters (for example, ssb-PositionsInBurst and ssb-PositionsInBurst2) or two sets of parameters (for example, two sets of inOneGroup and groupPresence, or two sets of shortBitmap, mediumBitmap, and longBitmap).

[0272] Step 2: The terminal device determines a first PRACH occasion based on the first SSB index value and the first physical random access channel mask index value, and sends a first random access preamble to the first network device on the first PRACH occasion; and / or, the terminal device determines a second PRACH occasion based on the second SSB index value and the second physical random access channel mask index value, and sends a second random access preamble to the second network device on the second PRACH occasion. Optionally, depending on whether the terminal device supports sending random access preambles to two network devices simultaneously, there are two situations:

[0273] (1) If the terminal device supports sending random access preambles to two network devices simultaneously, regardless of whether the first PRACH occasion and the second PRACH occasion are the same in the time domain, the terminal device can directly send the random access preamble to the first network device on the first PRACH occasion and directly send the random access preamble to the second network device on the second PRACH occasion.

[0274] (2) If the terminal device does not support sending random access preambles to two network devices simultaneously, the terminal device does not expect to transmit random access preambles on the same PRACH occasion in the time domain. Optionally, the two PRACH occasions can be configured to be different in the time domain by configuring the SSB index value and the physical random access channel mask index value. For example, if the SSB index value and / or the physical random access channel mask index value are configured to be different, and for another example, if the physical random access channel mask index value is 0 / 9 / 10, the terminal device can select two different PRACH occasions in the time domain.

[0275] Step 3: Transmit a first physical downlink control channel from a control resource set with a control resource set pool index parameter value of 0, the first physical downlink control channel includes downlink control information, and the downlink control message schedules a random access response corresponding to the first random access preamble, that is, the random access response corresponding to the first random access preamble is sent from the first network device; and / or, transmit a second physical downlink control channel from a control resource set with a control resource set pool index parameter value of 1, the second physical downlink control channel includes downlink control information, and the downlink control message schedules a random access response corresponding to the second random access preamble, that is, the random access response corresponding to the second random access preamble is sent from the second network device. Optionally, the following technical features are included:

[0276] (1) The terminal device assumes that the first physical downlink control channel containing the first random access preamble index value and the first physical downlink control channel containing the downlink control information of the scheduling random access response have the same demodulation reference signal (DMRS) antenna port quasi co-location characteristic (QCL), and / or, the second physical downlink control channel containing the second random access preamble index value and the second physical downlink control channel containing the downlink control information of the scheduling random access response have the same demodulation reference signal antenna port quasi co-location characteristic.

[0277] (2) The random access responses corresponding to the first and second random access preambles are received in the first and second random access response windows respectively, optionally, the first random access response window starts at the first symbol of the earliest control resource set, which is a physical downlink control channel used by the terminal device to receive a type 1 physical downlink control channel common search space set (for example: Type1-PDCCH CSS set), optionally, the control resource set pool index parameter value associated with the control resource set is 0, and at the same time, the starting symbol of the first random access response window is at least one symbol away from the last symbol of the first PRACH occasion; and / or, the second random access response window starts at the first symbol of the earliest control resource set, optionally, the control resource set pool index parameter value associated with the control resource set is 1, and at the same time, the starting symbol of the second random access response window is at least one symbol away from the last symbol of the second PRACH occasion.

[0278] (3) The random access responses corresponding to the first and second random access preambles respectively include a first media access control layer (MAC) random access response (RAR) and a second MAC random access response. The first MAC random access response includes a first timing advance command (e.g., Timing Advance Command), and / or the second MAC random access response includes a second timing advance command. Optionally, the first timing advance command is calculated by the first network device based on the first random access preamble, and / or the second timing advance command is calculated by the second network device based on the second random access preamble. Optionally, the first MAC random access response includes a first network device identifier for indicating that the first timing advance command is applied to uplink transmission to the first network device; and / or the second MAC random access response includes a second network device identifier for indicating that the second timing advance command is applied to uplink transmission to the second network device. Optionally, the network device identifier can be a random preamble sequence group index value or an SSB group index value.

[0279] Step 4: The first physical uplink channel (e.g., PUSCH / PUCCH) / reference signal (e.g., SRS) scheduled by the physical downlink control channel transmitted by the control resource set whose index parameter value is 0 is adjusted using the first timing advance command; and / or, the second physical uplink channel / reference signal scheduled by the physical downlink control channel transmitted by the control resource set whose index parameter value is 1 is adjusted using the second timing advance command.

[0280] This embodiment uses the above solution to improve the accuracy of timing adjustment by performing non-contention-based random access to two network devices respectively in a scenario of multiple network devices based on multiple downlink control information.

[0281] Eleventh embodiment

[0282] Based on the above embodiments of the present application, this embodiment further discloses the control method in the above embodiments.

[0283] In an embodiment of the present application, in a scenario of multiple network devices based on multiple downlink control information, different network devices can be distinguished by a control resource set pool index parameter (for example: coresetPoolIndex), for example: the physical downlink control channel transmitted in the control resource set with a control resource set pool index parameter value of 0 or other physical channels / reference signals scheduled by the physical downlink control channel are all associated with the first network device; the physical downlink control channel transmitted in the control resource set with a control resource set pool index parameter value of 1 or other physical channels / reference signals scheduled by the physical downlink control channel are all associated with the second network device.

[0284] Optionally, the terminal device performs timing adjustment on the physical uplink channel and / or reference signal according to the timing advance command in the random access response, including uplink timing adjustment based on non-competition random access and / or uplink timing adjustment based on competition random access.

[0285] Optionally, contention-based random access includes contention-based random access initiated by a terminal device and contention-based random access initiated by a network device. Optionally, contention-based random access initiated by a terminal device includes type 1 random access and type 2 random access. Contention-based random access initiated by a network device is to instruct the terminal device to perform contention-based random access by sending downlink control information, that is, sending downlink control information from a first network device to trigger the random access process, and / or sending downlink control information from a second network device to trigger the random access process, optionally, the downlink control information includes a random access preamble index value. When the non-contention-based random access preamble has been used up, the contention-based random access process will be triggered. Optionally, if the random access preamble is grouped so that two groups of random access preambles correspond to two network devices respectively, the non-contention-based random access preamble has been used up, indicating that if the non-contention-based random access preamble corresponding to a network device has been used up, the network device will trigger a contention-based random access process. In a scenario of multiple network devices based on multiple downlink control information, a contention-based random access process can be performed separately on the two network devices, and the steps are as follows:

[0286] Step 1: For contention-based random access initiated by a network device, a first physical downlink control channel is transmitted from a control resource set whose control resource set index parameter value is 0, the first physical downlink control channel including downlink control information, i.e., downlink control information is sent from the first network device, the downlink control information including a first random access preamble index value (e.g., Random Access Preamble Index); and / or a second physical downlink control channel is transmitted from a control resource set whose control resource set index parameter value is 1, the second physical downlink control channel including downlink control information, i.e., downlink control information is sent from the second network device, the downlink control information including a second random access preamble index value. Optionally, when the random access preamble index value is all 0s, it indicates that contention-based random access is triggered, i.e., when the first random access preamble index value is all 0s, the terminal device selects the best SSB and selects the first random access preamble, and then sends the first random access preamble to the first network device, and / or, when the second random access preamble index value is all 0s, the terminal device selects the best SSB and selects the second random access preamble, and then sends the second random access preamble to the second network device. For contention-based random access initiated by a terminal device, the terminal device directly selects the best SSB and selects a first random access preamble, and then sends the first random access preamble to the first network device, and / or directly selects the best SSB and selects a second random access preamble, and then sends the second random access preamble to the second network device. Optionally, the SSBs for transmission are divided into two groups, corresponding to the first and second network devices, respectively. The terminal device measures the first group of SSBs sent from the first network device and selects the best SSB therefrom, i.e., the first SSB, and / or the terminal device measures the second group of SSBs sent from the second network device and selects the best SSB therefrom, i.e., the second SSB. The two groups of SSBs for transmission are grouped in the following manner:

[0287] (1) Grouping candidate SSBs: All candidate SSBs are grouped according to the number of SSBs in each element and the element arrangement pattern into two groups of candidate SSBs. Combined with the SSB position parameters in the burst, two groups of SSBs for transmission can be obtained.

[0288] (2) Grouping of SSBs for transmission: The terminal device groups the SSBs for transmission indicated by the SSB position parameter in the burst according to the number of SSBs in each element and the arrangement pattern of the elements, and divides them into two groups of SSBs for transmission.

[0289] (3) Directly indicating two sets of SSBs for transmission: Two sets of SSBs for transmission can be directly obtained through two parameters (for example, ssb-PositionsInBurst and ssb-PositionsInBurst2) or two sets of parameters (for example, two sets of inOneGroup and groupPresence, or two sets of shortBitmap, mediumBitmap, and longBitmap).

[0290] Step 2: The terminal device determines the first PRACH occasion based on the first SSB, and / or determines the second PRACH occasion based on the second SSB. Optionally, depending on whether the terminal device supports sending random access preambles to two network devices simultaneously, there are the following two situations:

[0291] (1) If the terminal device supports sending random access preambles to two network devices simultaneously, regardless of whether the first PRACH occasion and the second PRACH occasion are the same in the time domain, the terminal device can directly send the random access preamble to the first network device on the first PRACH occasion, and the terminal device can directly send the random access preamble to the second network device on the second PRACH occasion.

[0292] (2) If the terminal device does not support sending random access preambles to two network devices simultaneously, the following method can be used to avoid the terminal device sending random access preambles to two network devices separately on the same PRACH occasion in the time domain:

[0293] a) The second random access process is not performed before the first random access response window expires: the terminal device first sends a random access preamble to one of the network devices, and the terminal device sends a random access preamble to the other network device after the random access response window expires.

[0294] b) Sending a random access preamble on the subsequently available PRACH occasion corresponding to the SSB: If the first PRACH occasion and the second PRACH occasion are the same in the time domain, the terminal device first sends a random access preamble to one network device, and obtains the subsequently available PRACH occasion associated with the other network device based on the best SSB corresponding to the other network device. The terminal device selects a PRACH occasion from them to send a random access preamble to the network device.

[0295] c) Designing a constraint relationship for the association method between SSB and PRACH occasion: obtaining a first physical random access channel occasion based on the constraint relationship and the first synchronous broadcast block, and / or obtaining a second physical random access channel occasion based on the constraint relationship and the second synchronous broadcast block.

[0296] Step 3: The terminal device sends a first random access preamble to the first network device on the first PRACH occasion, and / or sends a second random access preamble to the second network device on the second PRACH occasion.

[0297] Step 4: Transmit a first physical downlink control channel from a control resource set with a control resource set pool index parameter value of 0, the first physical downlink control channel including downlink control information (e.g., DCI), and the downlink control message scheduling a random access response (e.g., MSG2) corresponding to a first random access preamble, i.e., the random access response corresponding to the first random access preamble is sent from the first network device, and optionally, for type 2 random access, an absolute timing advance command MAC CE corresponding to the first random access preamble is sent from the first network device; and / or, transmit a second physical downlink control channel from a control resource set with a control resource set pool index parameter value of 1, the second physical downlink control channel including downlink control information, and the downlink control message scheduling a random access response corresponding to a second random access preamble, i.e., the random access response corresponding to the second random access preamble is sent from the second network device, and optionally, for type 2 random access, an absolute timing advance command MAC CE corresponding to the second random access preamble is sent from the second network device. Optionally, the following technical features are included:

[0298] (1) The terminal device assumes that the physical downlink shared channel of the random access response including the first random access preamble has the same demodulation reference signal antenna port quasi-co-location characteristic as the first SSB, and / or, the physical downlink shared channel of the random access response including the second random access preamble has the same demodulation reference signal antenna port quasi-co-location characteristic as the second SSB. Optionally, the terminal device assumes that the first physical downlink control channel of the scheduling random access response has the same demodulation reference signal antenna port quasi-co-location characteristic as the first SSB, and / or, the second physical downlink control channel of the scheduling random access response has the same demodulation reference signal antenna port quasi-co-location characteristic as the second SSB.

[0299] (2) The random access responses corresponding to the first and second random access preambles are received in the first and second random access response windows respectively, optionally, the first random access response window starts at the first symbol of the earliest control resource set, which is a physical downlink control channel used by the terminal device to receive a type 1 physical downlink control channel common search space set (e.g., Type1-PDCCH CSS set), optionally, the control resource set pool index parameter value associated with the control resource set is 0, and at the same time, the starting symbol of the first random access response window is at least one symbol away from the last symbol of the first PRACH occasion; and / or, the second random access response window starts at the first symbol of the earliest control resource set, optionally, the control resource set pool index parameter value associated with the control resource set is 1, and at the same time, the starting symbol of the second random access response window is at least one symbol away from the last symbol of the second PRACH occasion.

[0300] (3) The random access responses corresponding to the first and second random access preambles respectively include a first MAC random access response (e.g., MAC RAR) and a second MAC random access response. The first MAC random access response includes a first timing advance command (e.g., Timing Advance Command), and / or the second MAC random access response includes a second timing advance command. Optionally, the first timing advance command is calculated by the first network device based on the first random access preamble, and / or the second timing advance command is calculated by the second network device based on the second random access preamble. Optionally, the first MAC random access response includes a first network device identifier for indicating that the first timing advance command is applied to uplink transmission to the first network device; and / or the second MAC random access response includes a second network device identifier for indicating that the second timing advance command is applied to uplink transmission to the second network device. Optionally, the network device identifier can be a random preamble sequence group index value or an SSB group index value.

[0301] Step 5: The first physical uplink channel (e.g., PUSCH / PUCCH) / reference signal (e.g., SRS) scheduled by the physical downlink control channel transmitted by the control resource set whose index parameter value is 0 is adjusted using the first timing advance command; and / or, the second physical uplink channel / reference signal scheduled by the physical downlink control channel transmitted by the control resource set whose index parameter value is 1 is adjusted using the second timing advance command.

[0302] This embodiment uses the above solution to perform a contention-based random access process. In a scenario of multiple network devices based on multiple downlink control information, contention-based random access processes can be performed on two network devices respectively, thereby improving the accuracy of timing adjustment.

[0303] Twelfth embodiment

[0304] Based on the above embodiments of the present application, this embodiment further discloses the control method in the above embodiments.

[0305] In an embodiment of the present application, a network device (eg, a base station) sends downlink information including at least one of radio resource control signaling, system information, downlink control information, and a synchronization broadcast block.

[0306] Optionally, the wireless resource control signaling and / or system information includes a synchronization broadcast block position parameter in a burst, a synchronization broadcast block number parameter for each element, an element arrangement pattern parameter, a group parameter, a group status parameter, a short bitmap parameter, a medium bitmap parameter, and at least one of a long bitmap parameter.

[0307] Optionally, the downlink control information includes first downlink control information and / or second downlink control information.

[0308] When the terminal device receives the downlink information sent by the network device, it selects or determines the physical random access channel timing according to the downlink information, sends the corresponding random access preamble at the physical random access channel timing, receives the random access response corresponding to the random access preamble in the random access response window, and adjusts the timing of the physical uplink channel and / or reference signal according to the timing advance command in the random access response.

[0309] Optionally, in the process of selecting or determining the physical random access channel timing based on downlink information, the terminal device selects or determines the first group of synchronization broadcast blocks and / or the second group of synchronization broadcast blocks based on the wireless resource control signaling and / or system information in the downlink information; selects or determines the first physical random access channel timing based on the first synchronization broadcast block and / or the first downlink control information, and / or selects or determines the second physical random access channel timing based on the second synchronization broadcast block and / or the second downlink control information.

[0310] Optionally, the terminal device determines how to perform SSB grouping through various parameters, including the terminal device selecting or determining the synchronous broadcast block for transmission based on the synchronous broadcast block position parameter in the burst; and / or, adding a second synchronous broadcast block position parameter in the burst to the service cell common system information block configuration information element and / or the service cell common configuration information element; and / or, adding a second group of in-group parameters and group status parameters, and / or at least one of the second group of short bitmap parameters, medium bitmap parameters and long bitmap parameters to the synchronous broadcast block position parameter in the burst.

[0311] Optionally, the terminal device obtains the first group of synchronized broadcast blocks according to the synchronized broadcast block position parameter in the first burst, and / or obtains the second group of synchronized broadcast blocks according to the synchronized broadcast block position parameter in the second burst;

[0312] The terminal device groups the candidate synchronized broadcast blocks and / or the synchronized broadcast blocks for transmission according to the synchronized broadcast block number parameter of each element and / or the element arrangement pattern parameter to obtain a first group of synchronized broadcast blocks and / or a second group of synchronized broadcast blocks;

[0313] The terminal device obtains a first group of synchronized broadcast blocks according to the first group of in-group parameters and / or group status parameters, and / or obtains a second group of synchronized broadcast blocks according to the second group of in-group parameters and / or group status parameters;

[0314] The terminal device obtains a first group of synchronized broadcast blocks based on at least one of the first group of short bitmap parameters, medium bitmap parameters and long bitmap parameters, and / or obtains a second group of synchronized broadcast blocks based on at least one of the second group of short bitmap parameters, medium bitmap parameters and long bitmap parameters.

[0315] Optionally, at least one of the following is included:

[0316] The terminal device selects or determines the first synchronization broadcast block based on the first downlink control information and / or the first group of synchronization broadcast blocks;

[0317] The terminal device selects or determines the second synchronization broadcast block based on the second downlink control information and / or the second group of synchronization broadcast blocks.

[0318] Optionally, the terminal device selects or determines the first physical random access channel opportunity according to the first synchronization broadcast block index value and / or the first physical random access channel mask index value in the first downlink control information, and / or selects or determines the second physical random access channel opportunity according to the second synchronization broadcast block index value and / or the second physical random access channel mask index value in the second downlink control information;

[0319] Optionally, the network device designs a constraint relationship for an association method between a synchronization broadcast block and a physical random access channel opportunity, and the terminal device obtains a first physical random access channel opportunity based on the constraint relationship and the first synchronization broadcast block, and / or obtains a second physical random access channel opportunity based on the constraint relationship and the second synchronization broadcast block;

[0320] If the first physical random access channel opportunity obtained according to the first synchronized broadcast block and the second synchronized broadcast block is the same as the second physical random access channel opportunity in the time domain, and the terminal device does not support sending random access preambles to two network devices at the same time, the terminal device obtains the first physical random access channel opportunity according to the first synchronized broadcast block, and / or selects one from the subsequently available physical random access channel opportunities corresponding to the second synchronized broadcast block as the second physical random access channel opportunity;

[0321] If the first physical random access channel opportunity and the second physical random access channel opportunity obtained according to the first synchronized broadcast block and the second synchronized broadcast block are different in the time domain, and the terminal device does not support sending random access preambles to two network devices at the same time, the terminal device obtains the first physical random access channel opportunity according to the first synchronized broadcast block and / or obtains the second physical random access channel opportunity according to the second synchronized broadcast block;

[0322] If the first physical random access channel opportunity obtained according to the first synchronous broadcast block and the second synchronous broadcast block is the same as the second physical random access channel opportunity, and the terminal device supports sending random access preambles to two network devices at the same time, the terminal device adds the network device identifier to the random access wireless network temporary identifier calculation formula to obtain an improved random access wireless network temporary identifier, and obtains the first physical random access channel opportunity according to the first synchronous broadcast block, and / or obtains the second physical random access channel opportunity according to the second synchronous broadcast block, and associates the improved random access wireless network temporary identifier with the first physical random access channel opportunity and / or the second physical random access channel opportunity.

[0323] Optionally, after the network device receives the first random access preamble sent by the terminal device, the network device correspondingly sends a random access response including a first timing advance command. Optionally, the first timing advance command is used for the terminal device to perform timing adjustment on the first physical uplink channel and / or the reference signal;

[0324] Optionally, after the network device receives the second random access preamble sent by the terminal device, it sends a random access response including a second timing advance command. Optionally, the second timing advance command is used for the terminal device to perform timing adjustment on the second physical uplink channel and / or reference signal.

[0325] Optionally, the network device receives the first physical uplink channel and / or reference signal that is timing adjusted and sent by the terminal device after the first timing advance command; and / or the network device receives the second physical uplink channel and / or reference signal that is timing adjusted and sent by the terminal device after the second timing advance command, and the timing adjustment process is completed.

[0326] Through the above-mentioned scheme, this embodiment enables the random access process of the terminal device to be performed based on a specific network device in a scenario of multiple network devices based on multiple downlink control information, so that the timing calculation and adjustment of the physical uplink channel and / or reference signal of any network device are more accurate.

[0327] Please refer to Figure 16, which is a schematic diagram of the structure of the control device provided in an embodiment of the present application. The device can be installed on the terminal device in the above method embodiment, and the device can specifically be a server. The control device shown in Figure 16 can be used to perform some or all of the functions in the method embodiment described in the above embodiment. As shown in Figure 16, the control device 110 includes:

[0328] The control module 111 is configured to adjust uplink timing based on downlink information.

[0329] Optionally, the downlink information includes at least one of wireless resource control signaling, system information, downlink control information and synchronous broadcast block; and / or, the wireless resource control signaling and / or system information includes at least one of the synchronous broadcast block position parameter in the burst, the number of synchronous broadcast blocks for each element parameter, the element arrangement pattern parameter, a group parameter, a group status parameter, a short bitmap parameter, a medium bitmap parameter and a long bitmap parameter; and / or, the downlink control information includes the first downlink control information and / or the second downlink control information.

[0330] Optionally, the control module is further configured to:

[0331] Selecting or determining a physical random access channel opportunity based on downlink information;

[0332] Sending a random access preamble on a physical random access channel opportunity;

[0333] Receive a random access response and adjust the timing of a physical uplink channel and / or a reference signal according to the timing advance command.

[0334] Optionally, the step of selecting or determining a physical random access channel opportunity based on downlink information includes:

[0335] Selecting or determining a first group of synchronized broadcast blocks and / or a second group of synchronized broadcast blocks based on radio resource control signaling and / or system information;

[0336] A first physical random access channel opportunity is selected or determined based on the first synchronization broadcast block and / or the first downlink control information, and / or a second physical random access channel opportunity is selected or determined based on the second synchronization broadcast block and / or the second downlink control information.

[0337] Optionally, before the step of selecting or determining the first group of synchronized broadcast blocks and / or the second group of synchronized broadcast blocks based on radio resource control signaling and / or system information, at least one of the following items is further included:

[0338] Selecting or determining a sync broadcast block for transmission based on a sync broadcast block position parameter in a burst;

[0339] Adding a synchronization broadcast block position parameter in the second burst to the serving cell common system information block configuration information element and / or the serving cell common configuration information element;

[0340] A second group of group parameters and group status parameters, and / or at least one of a second group of short bitmap parameters, medium bitmap parameters and long bitmap parameters are added to the synchronous broadcast block position parameters in the burst.

[0341] Optionally, the step of selecting or determining the first group of synchronized broadcast blocks and / or the second group of synchronized broadcast blocks based on radio resource control signaling and / or system information includes at least one of the following:

[0342] Obtaining a first group of synchronized broadcast blocks according to synchronized broadcast block position parameters in the first burst, and / or obtaining a second group of synchronized broadcast blocks according to synchronized broadcast block position parameters in the second burst;

[0343] Grouping candidate synchronized broadcast blocks and / or synchronized broadcast blocks for transmission according to a synchronized broadcast block number parameter of each element and / or an element arrangement pattern parameter to obtain a first group of synchronized broadcast blocks and / or a second group of synchronized broadcast blocks;

[0344] Obtain a first set of synchronized broadcast blocks based on the first set of in-group parameters and / or group status parameters, and / or obtain a second set of synchronized broadcast blocks based on the second set of in-group parameters and / or group status parameters;

[0345] A first set of synchronized broadcast blocks is obtained based on at least one of the first set of short bitmap parameters, medium bitmap parameters and long bitmap parameters, and / or a second set of synchronized broadcast blocks is obtained based on at least one of the second set of short bitmap parameters, medium bitmap parameters and long bitmap parameters.

[0346] Optionally, the step of selecting or determining a first physical random access channel opportunity based on the first synchronization broadcast block and / or the first downlink control information, and / or selecting or determining a second physical random access channel opportunity based on the second synchronization broadcast block and / or the second downlink control information, includes at least one of the following:

[0347] Selecting or determining a first physical random access channel opportunity according to a first synchronization broadcast block index value and / or a first physical random access channel mask index value in the first downlink control information, and / or selecting or determining a second physical random access channel opportunity according to a second synchronization broadcast block index value and / or a second physical random access channel mask index value in the second downlink control information;

[0348] Designing a constraint relationship for the association method between the synchronization broadcast block and the physical random access channel opportunity, obtaining a first physical random access channel opportunity based on the constraint relationship and the first synchronization broadcast block, and / or obtaining a second physical random access channel opportunity based on the constraint relationship and the second synchronization broadcast block;

[0349] If the first preset condition is met, obtaining a first physical random access channel opportunity according to the first synchronized broadcast block, and / or selecting one from subsequently available physical random access channel opportunities corresponding to the second synchronized broadcast block as a second physical random access channel opportunity;

[0350] If a second preset condition is met, obtaining a first physical random access channel opportunity according to the first synchronization broadcast block, and / or obtaining a second physical random access channel opportunity according to the second synchronization broadcast block;

[0351] If the third preset condition is met, the network device identifier is added to the random access wireless network temporary identifier calculation formula to obtain an improved random access wireless network temporary identifier, and the first physical random access channel opportunity is obtained according to the first synchronization broadcast block, and / or the second physical random access channel opportunity is obtained according to the second synchronization broadcast block, and the improved random access wireless network temporary identifier is associated with the first physical random access channel opportunity and / or the second physical random access channel opportunity.

[0352] Optionally, the control module is further configured to perform at least one of the following:

[0353] Sending a first random access preamble at a first physical random access channel opportunity;

[0354] A second random access preamble is sent in a second physical random access channel opportunity.

[0355] Optionally, the method further comprises at least one of the following:

[0356] receiving a random access response corresponding to the first random access preamble in a first random access response window, optionally wherein the random access response includes a first timing advance command;

[0357] A random access response corresponding to the second random access preamble is received in the second random access response window. Optionally, the random access response includes a second timing advance command.

[0358] Optionally, the step of adjusting the timing of the physical uplink channel and / or the reference signal according to the timing advance command includes at least one of the following:

[0359] Performing timing adjustment on the first physical uplink channel and / or the reference signal according to the first timing advance command;

[0360] The timing of the second physical uplink channel and / or the reference signal is adjusted according to the second timing advance command.

[0361] The control device provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment. Its implementation principle and beneficial effects are similar and will not be repeated here.

[0362] Please refer to FIG17 , which is a second structural diagram of a control device provided in an embodiment of the present application. As shown in FIG17 , the control device 120 includes:

[0363] The sending module 121 is used to send downlink information so that the terminal device adjusts the uplink timing based on the downlink information.

[0364] Optionally, the downlink information includes at least one of wireless resource control signaling, system information, downlink control information and synchronous broadcast block; and / or, the wireless resource control signaling and / or system information includes at least one of the synchronous broadcast block position parameter in the burst, the number of synchronous broadcast blocks for each element parameter, the element arrangement pattern parameter, a group parameter, a group status parameter, a short bitmap parameter, a medium bitmap parameter and a long bitmap parameter; and / or, the downlink control information includes the first downlink control information and / or the second downlink control information.

[0365] Optionally, the sending module is further configured to perform at least one of the following:

[0366] The terminal device selects or determines the physical random access channel timing based on the downlink information;

[0367] The terminal device sends the corresponding random access preamble during the physical random access channel opportunity;

[0368] The terminal device receives a random access response corresponding to the random access preamble in a random access response window;

[0369] The terminal device adjusts the timing of the physical uplink channel and / or reference signal according to the timing advance command in the random access response.

[0370] Optionally, the sending module is further configured to perform at least one of the following:

[0371] The terminal device selects or determines the first group of synchronized broadcast blocks and / or the second group of synchronized broadcast blocks based on radio resource control signaling and / or system information;

[0372] The terminal device selects or determines the first physical random access channel timing based on the first synchronization broadcast block and / or the first downlink control information, and / or selects or determines the second physical random access channel timing based on the second synchronization broadcast block and / or the second downlink control information.

[0373] Optionally, the sending module is further configured to perform at least one of the following:

[0374] The terminal device selects or determines the synchronization broadcast block for transmission according to the synchronization broadcast block position parameter in the burst;

[0375] The terminal device adds a synchronization broadcast block position parameter in the second burst to the serving cell common system information block configuration information element and / or the serving cell common configuration information element;

[0376] The terminal device adds a second group of group parameters and group status parameters, and / or at least one of a second group of short bitmap parameters, medium bitmap parameters and long bitmap parameters to the synchronous broadcast block position parameters in the burst.

[0377] Optionally, the sending module is further configured to perform at least one of the following:

[0378] The terminal device obtains a first group of synchronized broadcast blocks according to the synchronized broadcast block position parameter in the first burst, and / or obtains a second group of synchronized broadcast blocks according to the synchronized broadcast block position parameter in the second burst;

[0379] The terminal device groups the candidate synchronized broadcast blocks and / or the synchronized broadcast blocks for transmission according to the synchronized broadcast block number parameter of each element and / or the element arrangement pattern parameter to obtain a first group of synchronized broadcast blocks and / or a second group of synchronized broadcast blocks;

[0380] The terminal device obtains a first group of synchronized broadcast blocks according to the first group of in-group parameters and / or group status parameters, and / or obtains a second group of synchronized broadcast blocks according to the second group of in-group parameters and / or group status parameters;

[0381] The terminal device obtains a first group of synchronized broadcast blocks based on at least one of the first group of short bitmap parameters, medium bitmap parameters and long bitmap parameters, and / or obtains a second group of synchronized broadcast blocks based on at least one of the second group of short bitmap parameters, medium bitmap parameters and long bitmap parameters.

[0382] Optionally, the sending module is further configured to perform at least one of the following:

[0383] The terminal device selects or determines the first synchronization broadcast block based on the first downlink control information and / or the first group of synchronization broadcast blocks;

[0384] The terminal device selects or determines the second synchronization broadcast block based on the second downlink control information and / or the second group of synchronization broadcast blocks.

[0385] Optionally, the method further comprises at least one of the following:

[0386] The terminal device selects or determines the first physical random access channel opportunity according to the first synchronization broadcast block index value and / or the first physical random access channel mask index value in the first downlink control information, and / or selects or determines the second physical random access channel opportunity according to the second synchronization broadcast block index value and / or the second physical random access channel mask index value in the second downlink control information;

[0387] The network device designs a constraint relationship for the association method between the synchronization broadcast block and the physical random access channel opportunity, and the terminal device obtains the first physical random access channel opportunity based on the constraint relationship and the first synchronization broadcast block, and / or obtains the second physical random access channel opportunity based on the constraint relationship and the second synchronization broadcast block;

[0388] If the first preset condition is met, the terminal device obtains the first physical random access channel opportunity according to the first synchronization broadcast block, and / or selects one from the subsequently available physical random access channel opportunities corresponding to the second synchronization broadcast block as the second physical random access channel opportunity;

[0389] If the second preset condition is met, the terminal device obtains the first physical random access channel opportunity according to the first synchronization broadcast block, and / or obtains the second physical random access channel opportunity according to the second synchronization broadcast block;

[0390] If the third preset condition is met, the terminal device adds the network device identifier to the random access wireless network temporary identifier calculation formula to obtain an improved random access wireless network temporary identifier, and obtains the first physical random access channel timing based on the first synchronization broadcast block, and / or obtains the second physical random access channel timing based on the second synchronization broadcast block, and associates the improved random access wireless network temporary identifier with the first physical random access channel timing and / or the second physical random access channel timing.

[0391] Optionally, the sending module is further configured to perform at least one of the following:

[0392] The terminal device performs timing adjustment on the first physical uplink channel and / or the reference signal according to the first timing advance command in the random access response;

[0393] The terminal device adjusts the timing of the second physical uplink channel and / or reference signal according to the second timing advance command in the random access response.

[0394] Optionally, the method further comprises at least one of the following:

[0395] After receiving the first random access preamble, sending a random access response including a first timing advance command;

[0396] After receiving the second random access preamble, a random access response including a second timing advance command is sent.

[0397] Optionally, the method further comprises at least one of the following:

[0398] A first physical uplink channel and / or reference signal sent by a receiving terminal device after timing adjustment by a first timing advance command;

[0399] The receiving terminal device adjusts the timing of the second physical uplink channel and / or reference signal and sends the second physical uplink channel and / or reference signal after the second timing advance command.

[0400] The control device provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment. Its implementation principle and beneficial effects are similar and will not be repeated here.

[0401] Refer to Figure 18, which is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. As shown in Figure 18, the communication device 140 described in this embodiment can be the terminal device (or component that can be used for a terminal device) or network device (or component that can be used for a network device) mentioned in the aforementioned method embodiment. The communication device 140 can be used to implement the methods corresponding to the terminal device or network device described in the aforementioned method embodiment. For details, please refer to the description of the aforementioned method embodiment.

[0402] The communication device 140 may include one or more processors 141, also referred to as processing units, which may perform certain control or processing functions. Processor 141 may be a general-purpose processor or a dedicated processor. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, while the central processing unit may be used to control the communication device, execute software programs, and process software program data.

[0403] Optionally, the processor 141 may also store instructions 143 or data (eg, intermediate data). Optionally, the instructions 143 may be executed by the processor 141, so that the communication device 140 executes the method corresponding to the terminal device or network device described in the above method embodiment.

[0404] Optionally, the communication device 140 may include a circuit that can implement the functions of sending, receiving, or communicating in the aforementioned method embodiments.

[0405] Optionally, the communication device 140 may include one or more memories 142 , on which instructions 144 may be stored. The instructions may be executed on the processor 141 , so that the communication device 140 executes the method described in the above method embodiment.

[0406] Optionally, data may also be stored in the memory 142. The processor 141 and the memory 142 may be provided separately or integrated together.

[0407] Optionally, the communication device 140 may further include a transceiver 145 and / or an antenna 146. The processor 141 may be referred to as a processing unit, and controls the communication device 140 (terminal device, core network device, or wireless access network device). The transceiver 145 may be referred to as a transceiver unit, transceiver, transceiver circuit, or transceiver, and is used to implement the transceiver functions of the communication device 140.

[0408] Optionally, if the communication device 140 is used to implement operations corresponding to the terminal device in the above embodiments, for example, the transceiver 145 can receive downlink information; and the processor 141 can adjust the uplink timing based on the downlink information.

[0409] Optionally, the specific implementation process of the processor 141 and the transceiver 145 can refer to the relevant description of the above embodiments, which will not be repeated here.

[0410] Optionally, if the communication device 140 is used to implement operations corresponding to the network devices in the above embodiments, for example, the transceiver 145 may send downlink information so that the terminal device adjusts the uplink timing based on the downlink information.

[0411] Optionally, the specific implementation process of the processor 141 and the transceiver 145 can refer to the relevant description of the above embodiments, which will not be repeated here.

[0412] The processor 141 and transceiver 145 described in this application may be implemented on an IC (Integrated Circuit), an analog integrated circuit, an RFIC (Radio Frequency Integrated Circuit), a mixed-signal integrated circuit, an ASIC (Application Specific Integrated Circuit), a PCB (Printed Circuit Board), an electronic device, etc. The processor 141 and transceiver 145 may 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.

[0413] In this application, a communication device may be a terminal device (such as a mobile phone) or a network device (such as a base station), and the specific definition needs to be determined based on the context. In addition, the terminal device can be implemented in various forms. For example, the terminal devices described in this application may include mobile terminals such as mobile phones, tablet computers, laptop computers, 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.

[0414] Although the communication device is described above by taking a terminal device or a network device as an example, the scope of the communication device described in this application is not limited to the above-mentioned terminal device or network device, and the structure of the communication device may not be limited to Figure 21. The communication device may be an independent device or may be part of a larger device.

[0415] An embodiment of the present application further provides a communication system, comprising: a terminal device as in any of the above method embodiments; and a network device as in any of the above method embodiments.

[0416] The present application also provides a communication device including a memory and a processor. The memory stores a control program, and when the control program is executed by the processor, the steps of the control method in any of the above embodiments are implemented. The communication device in this application can be a terminal device (such as a mobile phone) or a network device (such as a base station). The specific reference needs to be clarified based on the context.

[0417] An embodiment of the present application further provides a storage medium having a control program stored thereon. When the control program is executed by a processor, the steps of the control method in any of the above embodiments are implemented.

[0418] In the embodiments of the communication device and storage medium provided in the embodiments of the present application, all technical features of any of the above-mentioned control method embodiments may be included. The expanded and explained contents of the specification are basically the same as those of the embodiments of the above-mentioned methods and will not be repeated here.

[0419] An embodiment of the present application further provides a computer program product, which includes computer program code. When the computer program code runs on a computer, the computer executes the methods in the various possible implementation modes described above.

[0420] An embodiment of the present application also provides a chip, including a memory and a processor, wherein the memory is used to store computer programs, and the processor is used to call and run the computer programs from the memory, so that a device equipped with the chip executes the methods in the various possible implementation modes as described above.

[0421] It is understood that the above scenarios are merely examples and do not limit 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, those skilled in the art will appreciate that with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application will also be applicable to similar technical problems.

[0422] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0423] The steps in the method of the embodiment of the present application can be adjusted in order, combined and deleted according to actual needs.

[0424] The units in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0425] In this application, the same or similar terminology, technical solutions and / or application scenario descriptions are generally only described in detail the first time they appear. When they appear again later, they are generally not repeated for the sake of brevity. When understanding the technical solutions and other contents of this application, for the same or similar terminology, technical solutions and / or application scenario descriptions that are not described in detail later, you can refer to the previous relevant detailed descriptions.

[0426] In this application, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0427] The various technical features of the technical solution of this application can be combined arbitrarily. In order to make the description concise, not all possible combinations of the various 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 this application.

[0428] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course 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 the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as above, and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, controlled terminal device, or network device, etc.) to execute the method of each embodiment of the present application.

[0429] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. 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 storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center by wired (e.g., coaxial cable, optical fiber, 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 includes one or more available media integrations. The available medium can be a magnetic medium (e.g., a floppy disk, a storage disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state storage disk Solid State Disk (SSD)).

[0430] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A control method, wherein: Including steps: S1: Adjust uplink timing based on downlink information.

2. The method according to claim 1, wherein Step S1 includes: Selecting or determining a physical random access channel opportunity based on downlink information; Sending a random access preamble on a physical random access channel opportunity; Receive a random access response and adjust the timing of a physical uplink channel and / or a reference signal according to the timing advance command.

3. The method according to claim 2, wherein: The step of selecting or determining a physical random access channel opportunity based on downlink information includes: Selecting or determining a first group of synchronized broadcast blocks and / or a second group of synchronized broadcast blocks based on radio resource control signaling and / or system information; A first physical random access channel opportunity is selected or determined based on the first synchronization broadcast block and / or the first downlink control information, and / or a second physical random access channel opportunity is selected or determined based on the second synchronization broadcast block and / or the second downlink control information.

4. The method according to claim 3, wherein: Before the step of selecting or determining the first group of synchronized broadcast blocks and / or the second group of synchronized broadcast blocks based on radio resource control signaling and / or system information, at least one of the following items is further included: Selecting or determining a sync broadcast block for transmission based on a sync broadcast block position parameter in a burst; Adding a synchronization broadcast block position parameter in the second burst to the serving cell common system information block configuration information element and / or the serving cell common configuration information element; A second group of group parameters and group status parameters, and / or at least one of a second group of short bitmap parameters, medium bitmap parameters and long bitmap parameters are added to the synchronous broadcast block position parameters in the burst.

5. The method according to claim 3, wherein: The step of selecting or determining the first group of synchronized broadcast blocks and / or the second group of synchronized broadcast blocks based on radio resource control signaling and / or system information includes at least one of the following: Obtaining a first group of synchronized broadcast blocks according to synchronized broadcast block position parameters in the first burst, and / or obtaining a second group of synchronized broadcast blocks according to synchronized broadcast block position parameters in the second burst; Grouping candidate synchronized broadcast blocks and / or synchronized broadcast blocks for transmission according to a synchronized broadcast block number parameter of each element and / or an element arrangement pattern parameter to obtain a first group of synchronized broadcast blocks and / or a second group of synchronized broadcast blocks; Obtain a first set of synchronized broadcast blocks based on the first set of in-group parameters and / or group status parameters, and / or obtain a second set of synchronized broadcast blocks based on the second set of in-group parameters and / or group status parameters; A first set of synchronized broadcast blocks is obtained based on at least one of the first set of short bitmap parameters, medium bitmap parameters and long bitmap parameters, and / or a second set of synchronized broadcast blocks is obtained based on at least one of the second set of short bitmap parameters, medium bitmap parameters and long bitmap parameters.

6. The method of claim 3, wherein: The step of selecting or determining the first physical random access channel opportunity based on the first synchronization broadcast block and / or the first downlink control information, and / or selecting or determining the second physical random access channel opportunity based on the second synchronization broadcast block and / or the second downlink control information, includes at least one of the following: Selecting or determining a first physical random access channel opportunity according to a first synchronization broadcast block index value and / or a first physical random access channel mask index value in the first downlink control information, and / or selecting or determining a second physical random access channel opportunity according to a second synchronization broadcast block index value and / or a second physical random access channel mask index value in the second downlink control information; Designing a constraint relationship for the association method between the synchronization broadcast block and the physical random access channel opportunity, obtaining a first physical random access channel opportunity based on the constraint relationship and the first synchronization broadcast block, and / or obtaining a second physical random access channel opportunity based on the constraint relationship and the second synchronization broadcast block; If the first preset condition is met, obtaining a first physical random access channel opportunity according to the first synchronized broadcast block, and / or selecting one from subsequently available physical random access channel opportunities corresponding to the second synchronized broadcast block as a second physical random access channel opportunity; If a second preset condition is met, obtaining a first physical random access channel opportunity according to the first synchronization broadcast block, and / or obtaining a second physical random access channel opportunity according to the second synchronization broadcast block; If the third preset condition is met, the network device identifier is added to the random access wireless network temporary identifier calculation formula to obtain an improved random access wireless network temporary identifier, and the first physical random access channel opportunity is obtained according to the first synchronization broadcast block, and / or the second physical random access channel opportunity is obtained according to the second synchronization broadcast block, and the improved random access wireless network temporary identifier is associated with the first physical random access channel opportunity and / or the second physical random access channel opportunity.

7. The method according to any one of claims 2 to 6, wherein The step of adjusting the timing of the physical uplink channel and / or the reference signal according to the timing advance command includes at least one of the following: Performing timing adjustment on the first physical uplink channel and / or the reference signal according to the first timing advance command; The timing of the second physical uplink channel and / or the reference signal is adjusted according to the second timing advance command.

8. A control method, wherein: Including steps: S0: Send downlink information so that the terminal device can adjust the uplink timing based on the downlink information.

9. The method of claim 8, wherein: The downlink information includes at least one of wireless resource control signaling, system information, downlink control information and synchronous broadcast block; and / or, the wireless resource control signaling and / or system information includes a synchronous broadcast block position parameter in a burst, a synchronous broadcast block number parameter for each element, an element arrangement pattern parameter, a group parameter, a group status parameter, a short bitmap parameter, a medium bitmap parameter and a long bitmap parameter; and / or, the downlink control information includes first downlink control information and / or second downlink control information.

10. The method of claim 8, wherein: Also include at least one of the following: After receiving the first random access preamble, sending a random access response including a first timing advance command; After receiving the second random access preamble, a random access response including a second timing advance command is sent.

11. The method according to claim 10, wherein: Also include at least one of the following: A first physical uplink channel and / or reference signal sent by a receiving terminal device after timing adjustment by a first timing advance command; The receiving terminal device adjusts the timing of the second physical uplink channel and / or reference signal and sends the second physical uplink channel and / or reference signal after the second timing advance command.

12. A communication device, wherein: include: A memory, a processor, and a control program stored in the memory and executable on the processor, wherein the control program, when executed by the processor, implements the steps of the control method according to claim 1 or 8.

13. A storage medium, wherein: The storage medium stores a computer program, which implements the steps of the control method according to claim 1 or 8 when executed by the processor.

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