Random access channel transmission method and apparatus, device, and storage medium

Abstract

The present application relates to the technical field of communications, and discloses a random access channel transmission method and apparatus, a device, and a storage medium. The method comprises: sending a physical random access channel (PRACH) on a first time-frequency resource, and sending a physical uplink shared channel (PUSCH) on a second time-frequency resource, wherein the PUSCH carries first information, and a first time-domain resource corresponding to the first time-frequency resource overlaps with a second time-domain resource corresponding to the second time-frequency resource. In the method, the first information can be sent to a network device while the PRACH is sent, and the PRACH only needs to consume resources to carry a random access preamble sequence, without needing to consume resources to carry implicit information, thereby saving PRACH resources.

Description

Transmission methods, apparatus, devices and storage media for random access channels Technical Field

[0001] This application relates to the field of communication technology, and in particular to a method, apparatus, device and storage medium for transmitting a random access channel. Background Technology

[0002] In 5G (5G) New Radio (NR) systems, multi-beam communication is supported. Therefore, network devices need to know the beam in which the terminal device is located before communicating with it in order to determine the appropriate communication direction.

[0003] In related technologies, terminal devices send beam information to network devices by implicitly associating it with a random access preamble sequence. Upon successfully receiving the random access preamble sequence, the network device determines the beam in which the terminal device is located by analyzing the time-frequency position of the random access preamble sequence.

[0004] However, the implicit carrying of beam information in the random access preamble sequence leads to significant resource overhead in the Physical Random Access Channel (PRACH). Therefore, reducing the resource overhead of PRACH remains an unresolved issue.

[0005] Summary of the Invention

[0006] This application provides a method, apparatus, device, and storage medium for transmitting data through a random access channel. The technical solution is as follows:

[0007] On one hand, embodiments of this application provide a transmission method for a random access channel, the method being executed by a terminal device, the method comprising:

[0008] The Physical Random Access Channel (PRACH) is transmitted on a first time-frequency resource, and the Physical Uplink Shared Channel (PUSCH) is transmitted on a second time-frequency resource, wherein the PUSCH carries first information.

[0009] The first time-domain resource corresponding to the first time-frequency resource overlaps with the second time-domain resource corresponding to the second time-frequency resource.

[0010] On the other hand, embodiments of this application provide a transmission method for a random access channel, the method being executed by a network device, the method comprising:

[0011] Receive PRACH transmitted on a first time-frequency resource and PUSCH transmitted on a second time-frequency resource, wherein the PUSCH carries first information;

[0012] The first time-domain resource corresponding to the first time-frequency resource overlaps with the second time-domain resource corresponding to the second time-frequency resource.

[0013] On the other hand, embodiments of this application provide a method for transmitting an SSB, the method being executed by a terminal device, the method comprising:

[0014] Receive a first type SSB, wherein at least one of the PSS and SSS in the first type SSB is transmitted using the same time-frequency resources as the PBCH.

[0015] On the other hand, embodiments of this application provide a method for transmitting an SSB, the method being executed by a network device, the method comprising:

[0016] Send a first type of SSB, wherein at least one of the PSS and SSS in the first type of SSB is sent using the same time-frequency resources as the PBCH.

[0017] On the other hand, embodiments of this application provide a transmission apparatus for a random access channel, the apparatus comprising:

[0018] The transmitting module is used to transmit PRACH on a first time-frequency resource and to transmit PUSCH on a second time-frequency resource, wherein the PUSCH carries first information.

[0019] The first time-domain resource corresponding to the first time-frequency resource overlaps with the second time-domain resource corresponding to the second time-frequency resource.

[0020] On the other hand, embodiments of this application provide a transmission apparatus for a random access channel, the apparatus comprising:

[0021] A receiving module is configured to receive a PRACH transmitted on a first time-frequency resource and a PUSCH transmitted on a second time-frequency resource, wherein the PUSCH carries first information.

[0022] The first time-domain resource corresponding to the first time-frequency resource overlaps with the second time-domain resource corresponding to the second time-frequency resource.

[0023] On the other hand, embodiments of this application provide an SSB transmission device, the device comprising:

[0024] A receiving module is configured to receive a first type of SSB, wherein at least one of the PSS and SSS in the first type of SSB is transmitted using the same time-frequency resources as the PBCH.

[0025] On the other hand, embodiments of this application provide an SSB transmission device, the device comprising:

[0026] A transmitting module is used to transmit a first type of SSB, wherein at least one of the PSS and SSS in the first type of SSB is transmitted using the same time-frequency resources as the PBCH.

[0027] On the other hand, embodiments of this application provide a terminal device, the terminal device including a transceiver; wherein:

[0028] The transceiver is configured to transmit PRACH on a first time-frequency resource and PUSCH on a second time-frequency resource, wherein the PUSCH carries first information.

[0029] The first time-domain resource corresponding to the first time-frequency resource overlaps with the second time-domain resource corresponding to the second time-frequency resource.

[0030] On the other hand, embodiments of this application provide a network device, the network device including a transceiver; wherein:

[0031] The transceiver is configured to receive a PRACH transmitted on a first time-frequency resource and a PUSCH transmitted on a second time-frequency resource, wherein the PUSCH carries first information.

[0032] The first time-domain resource corresponding to the first time-frequency resource overlaps with the second time-domain resource corresponding to the second time-frequency resource.

[0033] On the other hand, embodiments of this application provide a terminal device, the terminal device including a transceiver; wherein:

[0034] The transceiver is configured to receive a first type of SSB, wherein at least one of the PSS and SSS in the first type of SSB is transmitted using the same time-frequency resources as the PBCH.

[0035] On the other hand, embodiments of this application provide a network device, the network device including a transceiver; wherein:

[0036] The transceiver is configured to transmit a first type of SSB, wherein at least one of the PSS and SSS in the first type of SSB is transmitted using the same time-frequency resources as the PBCH.

[0037] On the other hand, embodiments of this application provide a computer-readable storage medium storing a computer program that is executed by a processor to implement the above-described random access channel transmission method and / or SSB transmission method.

[0038] On the other hand, embodiments of this application provide a chip, which includes programmable logic circuits and / or program instructions. When the chip is running on a terminal or network device, it is used to implement the above-mentioned random access channel transmission method and / or SSB transmission method.

[0039] On the other hand, embodiments of this application provide a computer program product, the computer program product including computer instructions stored in a computer-readable storage medium; a processor of a communication device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the communication device to implement the above-described random access channel transmission method and / or SSB transmission method.

[0040] On the other hand, embodiments of this application provide a computer program executed by a processor of a communication device to implement the above-described random access channel transmission method and / or SSB transmission method.

[0041] The technical solutions provided in this application embodiment may have the following beneficial effects:

[0042] By sending PRACH and PUSCH simultaneously, the terminal device can carry the first information via PUSCH. This means the terminal device can explicitly send the first information to the network device simultaneously with the PRACH, without the PRACH implicitly carrying the information. When the PRACH implicitly carries information, it consumes resources not only to carry the random access preamble sequence but also to carry the implicit information, resulting in significant resource overhead. However, by explicitly sending the first information to the network device simultaneously with the PRACH, the PRACH only needs to consume resources to carry the random access preamble sequence, saving resources by eliminating the need for implicit information. Attached Figure Description

[0043] Figure 1 illustrates a schematic diagram of the four-step random access process provided by the relevant technology;

[0044] Figure 2 illustrates a schematic diagram of the two-step random access process provided by the relevant technology;

[0045] Figure 3 shows a schematic diagram of the SSB structure provided by the related technology;

[0046] Figure 4 shows a schematic diagram of SSB transmission provided by the relevant technology;

[0047] Figure 5 shows a schematic diagram of the communication system provided in an embodiment of this application;

[0048] Figure 6 shows a flowchart of a random access channel transmission method provided in an embodiment of this application;

[0049] Figure 7 shows a schematic diagram of a transmission method for a random access channel provided in an embodiment of this application;

[0050] Figure 8 shows a schematic diagram of the structure of the SSB provided in an embodiment of this application;

[0051] Figure 9 shows a schematic diagram of the structure of the SSB provided in an embodiment of this application;

[0052] Figure 10 shows a schematic diagram of the structure of the SSB provided in an embodiment of this application;

[0053] Figure 11 shows a schematic diagram of a transmission method for a random access channel provided in an embodiment of this application;

[0054] Figure 12 shows a schematic diagram of the four-step random access process provided in an embodiment of this application;

[0055] Figure 13 shows a schematic diagram of the two-step random access process provided in an embodiment of this application;

[0056] Figure 14 shows a flowchart of a random access channel transmission method provided in an embodiment of this application;

[0057] Figure 15 shows a flowchart of an SSB transmission method provided in an embodiment of this application;

[0058] Figure 16 shows a flowchart of an SSB transmission method provided in an embodiment of this application;

[0059] Figure 17 shows a structural block diagram of a transmission apparatus for a random access channel provided in an embodiment of this application;

[0060] Figure 18 shows a structural block diagram of a transmission apparatus for a random access channel provided in an embodiment of this application;

[0061] Figure 19 shows a structural block diagram of an SSB transmission device provided in an embodiment of this application;

[0062] Figure 20 shows a structural block diagram of an SSB transmission device provided in an embodiment of this application;

[0063] Figure 21 shows a schematic diagram of the structure of a communication device provided in an embodiment of this application. Detailed Implementation

[0064] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be further described in detail below with reference to the accompanying drawings. Exemplary embodiments will be described in detail here, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. All other embodiments obtained by those skilled in the art without inventive effort in relation to the embodiments of this application are within the scope of protection of this application. The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. The singular forms “a,” “the,” and “the” used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items. It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this 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 word “if” as used herein may be interpreted as “when”, “when”, or “in response to determination”.

[0065] First, the relevant technologies involved in the embodiments of this application will be introduced:

[0066] Random access procedure

[0067] The random access procedure refers to the process from when a terminal device sends a random access preamble sequence to attempt to access a network device until a basic signaling connection is established between the terminal device and the network device. The random access procedure is one of the most basic requirements for any cellular communication system and is used to enable data communication between the terminal device and the network device.

[0068] In some embodiments, the terminal device obtains the Master Information Block (MIB) sent by the network device by searching the Synchronization Signal and Physical Broadcast Channel (SSB). Based on the MIB, the terminal device obtains the time-domain and frequency-domain resources of the Control Resource Set (CORESET). The terminal device can detect the Downlink Control Information (DCI) of the System Information Block (SIB) on the CORESET and receive SIB1 on the time-frequency resources indicated by the DCI. Thus, it can receive information such as the Initial Uplink Bandwidth Part (Initial UL BWP), Initial Downlink Bandwidth Part (Initial DL BWP), Preamble, and RACH Occasion (RO) indicated in SIB1. Based on SIB1, the terminal device transmits a PRACH carrying the Preamble in the RO resource associated with the SSB.

[0069] In some embodiments, the random access procedure includes: four-step random access and two-step random access.

[0070] • Four-step random access:

[0071] Figure 1 illustrates the four steps of a contention-based random access procedure:

[0072] (1) The terminal device sends message 1 (Msg1) to the network device: random access preamble.

[0073] The terminal device sends a random access preamble sequence to the network device, which uses this sequence to estimate the terminal device's transmission delay in order to achieve uplink synchronization.

[0074] (2) The network device sends message 2 (Msg2) to the terminal device: Random Access Response (RAR).

[0075] Based on the transmission delay estimated in the first step above, the network device sends a timing advance command to adjust the transmission time of the terminal devices. Message 2 is organized by the network device's Media Access Control (MAC) layer and carried by the Physical Downlink Shared Channel (PDSCH). One message 2 can respond to random access requests from multiple terminal devices simultaneously.

[0076] Network devices schedule message 2 using the Physical Downlink Control Channel (PDCCH) and perform addressing (also known as scrambling) using either the Cell Radio-Network Temporary Identifier (C-RNTI) or the Random Access-Network Temporary Identifier (RA-RNTI). The RA-RNTI is determined by the time-frequency resources of the PRACH carrying message 1. Message 2 contains uplink transmission timing advance and allocates uplink resources and a temporary C-RNTI for message 3.

[0077] (3) The terminal device sends message 3 (Msg3) to the network device: the first scheduled transmission.

[0078] After receiving message 2, the terminal device transmits message 3 on the allocated uplink resources and sends the User Equipment Identifier (UE ID) to the network device through the Physical Uplink Share Channel (PUSCH).

[0079] Optionally, message 3 includes a Common Control Channel (CCCH) Service Data Unit (SDU) for message 4 to carry a contention resolution identifier.

[0080] (4) The network device sends message 4 (Msg4) to the terminal device: contention resolution message.

[0081] The network device sends a contention resolution message to the terminal device on the PDSCH.

[0082] • Two-step random access:

[0083] In a contention-based random access process, the four-step random access procedure can be merged into a two-step random access procedure. Referring to Figure 2, the merged procedure includes message A and message B, and the relevant steps include:

[0084] (1) The terminal device sends message A to the network device.

[0085] Optionally, message A includes the contents of messages 1 and 3 above, that is, message A includes: a random access preamble sequence and a UE ID, and the UE ID can be at least one of: C-RNTI, temporary C-RNTI, and RA-RNTI.

[0086] (2) After receiving message A from the terminal device, the network device sends message B to the terminal device.

[0087] Optionally, message B includes the contents of messages 2 and 4 above, that is, message B includes: random access response and contention resolution information.

[0088] ·SSB

[0089] A single SSB in an NR comprises a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH) distributed across four consecutive Orthogonal Frequency Division Multiplexing (OFDM) symbols. For example, as shown in Figure 3, the PSS, SSS, and PBCH occupy different resource blocks across the four consecutive symbols.

[0090] In some embodiments, SSBs are transmitted periodically, with at least one SSB burst set transmitted within each SSB transmission period. Each SSB burst set includes at least two SSB bursts. For example, as shown in Figure 4, an SSB burst set period includes multiple SSBs (e.g., 8 SSBs), and different SSBs can correspond to different beam directions. NR supports SSB burst set periods of 5ms, 10ms, 20ms, etc.

[0091] A key feature of NR cells is their support for downlink multi-beaming. Before communication between network devices and terminal devices, the network devices need to know the beam the terminal device is in, so that they can set the appropriate beam direction during subsequent data transmission. In related technologies, the terminal device reports beam information by carrying it in a random access preamble. Since the random access preamble is a sequence signal, it cannot explicitly carry information directly; therefore, beam information can only be implicitly carried through the preamble.

[0092] Before initiating random access, the terminal device measures and evaluates the signal quality of the cell and the signal strength of each SSB within the cell. When initiating random access, the terminal device sends a random access preamble on the RO corresponding to the SSB with the strongest or relatively strong signal. If the network device successfully receives the random access preamble, it can determine the terminal device's beam information based on the RO where the preamble is located, and then use this beam information for subsequent communication.

[0093] In related technologies, a mapping relationship between SSB and RO is established in the NR system:

[0094] 1) One-to-one mapping; 2) Many-to-one mapping; 3) One-to-many mapping.

[0095] Considering the need to support diverse scenarios, all three mapping relationships are supported in the NR standard.

[0096] Figure 5 shows a schematic diagram of a communication system provided in an exemplary embodiment of this application. The communication system includes a terminal device 110 and a network device 120.

[0097] The terminal device 110 in this application embodiment can also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user apparatus. This terminal includes, but is not limited to: handheld devices, wearable devices, in-vehicle devices, and IoT devices, such as: mobile phones, tablets, e-readers, laptops, desktop computers, televisions, game consoles, mobile internet devices (MID), augmented reality (AR) terminals, virtual reality (VR) terminals, mixed reality (MR) terminals, wearable devices, controllers, electronic tags, controllers, wireless terminals in industrial control, self-driving, remote medical, smart grid, transportation safety, smart city, smart home, remote medical surgery, cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, and wireless local loops. Loop (WLL) stations, personal digital assistants (PDAs), set-top boxes (STBs), customer premises equipment (CPEs), etc.

[0098] The network device 120 in this embodiment provides wireless communication functionality. This network device 120 includes, but is not limited to: an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a Home Evolved Node B (or Home Node B, HNB), a Baseband Unit (BBU), an Access Point (AP) in a Wi-Fi system, a wireless relay node, a wireless backhaul node, a Transmission Point (TP), or a Transmission and Reception Point (TRP), etc. It can also be used for next-generation Node B (Next Generation Node) systems in 5G mobile communication systems. B, gNB) or transmission point (TRP or TP), or, in a 5G system, one or a group of antenna panels (including multiple antenna panels) of a base station, or, network nodes constituting a gNB or transmission point, such as baseband unit (BBU) or distributed unit (DU), or base stations in Beyond Fifth Generation (B5G) mobile communication systems or 6th Generation (6G) mobile communication systems, or core network (CN), fronthaul, backhaul, radio access network (RAN), network slicing, etc., or serving cell, primary cell (PCell), primary secondary cell (PSCell), special cell (SpCell), secondary cell (SCell), neighboring cell, etc. of terminal equipment.

[0099] Terminal device 110 and network device 120 communicate with each other via some air interface technology. For example, there are two communication scenarios between terminal device 110 and network device 120: uplink communication scenario and downlink communication scenario. Uplink communication refers to terminal device 110 sending signals to network device 120; downlink communication refers to network device 120 sending signals to terminal device 110.

[0100] The technical solutions provided in the embodiments of this application can be applied to various communication systems, such as: Global System for Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, Advanced Long Term Evolution (LTE-A) system, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, 5G mobile communication system, NR system, NR system evolution system, LTE-based access to unlicensed spectrum (LTE-U) system, and NR-based access to unlicensed spectrum. It can be used with NR-U (spectrum) systems, terrestrial networks (TN) systems, non-terrestrial networks (NTN) systems, wireless local area networks (WLAN), Wi-Fi, cellular IoT systems, cellular passive IoT systems, and can also be used with subsequent evolution systems of 5G NR systems, as well as B5G, 6G and subsequent evolution systems.

[0101] In some embodiments of this application, "NR" may also be referred to as a 5G NR system or a 5G system. The 5G mobile communication system may include Non-Standalone (NSA) and / or Standalone (SA) networking. The technical solutions provided in the embodiments of this application can also be applied to Machine-Type Communication (MTC), Long Term Evolution-Machine (LTE-M) technology, Device-to-Device (D2D) networks, Machine-to-Machine (M2M) networks, Internet of Things (IoT) networks, or other networks. For example, an IoT network may include a vehicle-to-everything (V2X) network. In this context, the communication methods in the vehicle-to-everything (V2X) system are collectively referred to as vehicle to other devices (V2X, where X can represent anything). For example, V2X can include: vehicle to vehicle (V2V) communication, vehicle to infrastructure (V2I) communication, vehicle to pedestrian (V2P) communication, or vehicle to network (V2N) communication, etc.

[0102] It should be understood that in the description of the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between them, or a relationship of instruction and being instructed, configuration and being configured, etc. In the embodiments of this application, "predefined" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices), and this application does not limit the specific implementation method. For example, predefined can refer to what is defined in a protocol. In the embodiments of this application, "protocol" can refer to standard protocols in the field of communication, such as LTE protocol, NR protocol, Internet of Things protocol, and related protocols applied to future communication systems, and this application does not limit it.

[0103] In related technologies, beam information is implicitly carried in the random access preamble to enable the terminal device to report beam information to the network device, but this results in a large resource overhead for PRACH. Therefore, this application provides a transmission method for a random access channel, which is applicable to four-step random access and / or two-step random access. As shown in Figure 6, this method is executed by the terminal device and includes:

[0104] Step 220: Send PRACH on the first time-frequency resource and send PUSCH on the second time-frequency resource. The PUSCH carries first information. The first time-domain resource corresponding to the first time-frequency resource overlaps with the second time-domain resource corresponding to the second time-frequency resource.

[0105] In some embodiments, the first time-frequency resource is a resource for transmitting PRACH. The first time-frequency resource includes a first time-domain resource for transmitting PRACH and a first frequency-domain resource for transmitting PRACH.

[0106] In some embodiments, the second time-frequency resource is a resource for transmitting PUSCH. The second time-frequency resource includes a second time-domain resource for transmitting PUSCH and a second frequency-domain resource for transmitting PUSCH.

[0107] For example, as shown in FIG7, PRACH is transmitted on the first time-frequency resource 11 and PUSCH is transmitted on the second time-frequency resource 12.

[0108] In some embodiments, the first time-domain resource and the second time-domain resource overlap. Alternatively, this can be understood as the first time-domain resource and the second time-domain resource being identical. Or, this can be understood as PRACH and PUSCH being transmitted simultaneously.

[0109] In some embodiments, the first time-domain resource corresponding to the first time-frequency resource overlaps with the second time-domain resource corresponding to the second time-frequency resource, including at least one of the following:

[0110] The first time domain resource and the second time domain resource have the same period;

[0111] The first time domain resources and the second time domain resources occupy the same time slot;

[0112] The first time domain resource and the second time domain resource use the same symbol.

[0113] In some embodiments, PRACH is transmitted periodically, meaning the first time-domain resource corresponds to a first transmission period. The terminal device transmits PRACH periodically according to the first transmission period. Similarly, PUSCH is also transmitted periodically, with the second time-domain resource corresponding to a second transmission period. The terminal device transmits PUSCH according to the second transmission period. The first and second transmission periods are the same. It should be understood that "the first and second transmission periods are the same" here means that the first and second transmission periods are the same transmission period. That is, PRACH and PUSCH are transmitted periodically according to the same transmission period.

[0114] In some embodiments, the first time-domain resource and the second time-domain resource occupy the same time slot. For example, both the first time-domain resource and the second time-domain resource occupy time slot 1.

[0115] In some embodiments, the first temporal resource and the second temporal resource occupy the same subframe. For example, both the first temporal resource and the second temporal resource occupy subframe 1.

[0116] In some embodiments, the first time-domain resource and the second time-domain resource occupy the same symbols. For example, as shown in FIG7, the first time-domain resource corresponding to the first time-frequency resource 11 occupies symbols 3 to 6, and the second time-domain resource corresponding to the second time-frequency resource 12 also occupies symbols 3 to 6.

[0117] In some embodiments, the first starting time domain position of the first time domain resource and the second starting time domain position of the second time domain resource are the same, and / or, the first ending time domain position of the first time domain resource and the second ending time domain position of the second time domain resource are the same. The first starting time domain position is the starting time domain position of the second time domain resource, and the second starting time domain position is the starting time domain position of the second time domain resource.

[0118] In this embodiment, the example of the first time domain resource and the second time domain resource occupying the same symbol is used for illustration.

[0119] In some embodiments, the first frequency domain resource corresponding to the first time-frequency resource may or may not overlap with the second frequency domain resource corresponding to the second time-frequency resource.

[0120] In some embodiments, the first frequency domain resources and the second frequency domain resources overlap. Alternatively, this can be understood as the first frequency domain resources and the second frequency domain resources being identical.

[0121] In some embodiments, the first frequency domain resource corresponding to the first time-frequency resource overlaps with the second frequency domain resource corresponding to the second time-frequency resource, including at least one of the following:

[0122] The first frequency domain resource and the second frequency domain resource have the same period;

[0123] The first frequency domain resources and the second frequency domain resources occupy the same resource block (RB);

[0124] The first frequency domain resources and the second frequency domain resources occupy the same subcarriers;

[0125] The first starting frequency domain position of the first frequency domain resource is the same as the second starting frequency domain position of the second frequency domain resource.

[0126] The first end frequency domain position of the first frequency domain resource is the same as the second end frequency domain position of the second frequency domain resource.

[0127] Wherein, the first starting frequency domain position is the starting frequency domain position of the first frequency domain resource, and the second starting frequency domain position is the starting frequency domain position of the second frequency domain resource.

[0128] In some embodiments, the first frequency domain resource corresponding to the first time-frequency resource may or may not overlap with the second frequency domain resource corresponding to the second time-frequency resource, including:

[0129] The first starting frequency domain position is different from the second starting frequency domain position, and the number of RBs occupied by the first frequency domain resources and the second time domain resources is the same; or, the second starting frequency domain position is different from the first starting frequency domain position, and the number of RBs occupied by the first frequency domain resources and the second time domain resources is different; or, the first starting frequency domain position is the same as the second starting frequency domain position, and the number of RBs occupied by the first frequency domain resources and the second time domain resources is different; or, the first starting frequency domain position is the same as the second starting frequency domain position, and the number of RBs occupied by the first frequency domain resources and the second time domain resources is the same.

[0130] In some embodiments, the first time-frequency resource and the second time-frequency resource are associated in a predefined manner.

[0131] In some embodiments, the first time-frequency resource and the second time-frequency resource are pre-configured by the network device.

[0132] In some embodiments, the network device pre-configures the offset values ​​of the first time-frequency resource and the second time-frequency resource relative to the first time-frequency resource. When the network device pre-configures the first time-frequency resource, the offset value of the second time-frequency resource relative to the first time-frequency resource is used to determine the second time-frequency resource.

[0133] In some embodiments, the first information is used to indicate the SSB associated with the PRACH. In some embodiments, the first information is also used to indicate the Channel State Information-Reference Signal (CSI-RS). In some embodiments, the first information is also used to indicate the Demodulation Reference Signal (DMRS).

[0134] In some embodiments, the first information includes at least one of the following:

[0135] • SSB index;

[0136] • Reference Signal Receiving Power (RSRP) based on SSB measurements.

[0137] In some embodiments, the first information may further include the Reference Signal Receiving Quality (RSRQ) obtained based on SSB measurements.

[0138] In some embodiments, the first information also includes the signal-to-interference plus-noise ratio (SINR) measured based on the SSB.

[0139] In some embodiments, the SSB in the first information may be a first type SSB, or a second type SSB.

[0140] In some embodiments, the PSS, SSS, and PBCH in the second type SSB are transmitted using a set of different time-frequency resources with relative positions. For example, as shown in FIG3, the PSS, SSS, and PBCH each occupy different resource blocks.

[0141] In some embodiments, at least one of the PSS and SSS in the first type SSB is transmitted using the same time-frequency resources as the PBCH. In some embodiments, at least one of the PSS and SSS in the first type SSB uses the same time-frequency resources as the PBCH in a non-orthogonal manner.

[0142] In some embodiments, the structure of the first type SSB includes at least one of the following:

[0143] Structure 1: SSS and PBCH occupy the same time-domain and frequency-domain resources, while PSS occupies separate time-domain resources.

[0144] In some embodiments, the SSS and PBCH in the first type SSB occupy the same time-domain and frequency-domain resources. That is, the SSS and PBCH in the first type SSB occupy the same resource blocks. For example, as shown in FIG8, the SSS and PBCH are transmitted using the same resource blocks, while the PSS is transmitted using a separate resource block.

[0145] In some embodiments, the temporal resources occupied by the PSS and the temporal resources occupied by the SSS superimposed on the PBCH are adjacent. For example, the PSS and the SSS superimposed on the PBCH occupy adjacent symbols. For instance, assuming the temporal resources occupied by the PSS are symbol 3, then the temporal resources occupied by the SSS superimposed on the PBCH are symbol 4.

[0146] In some embodiments, the PSS is used to determine the synchronization grid and to detect the cell identifier.

[0147] In some embodiments, the number of RBs occupied by the PSS is the same as the number of RBs occupied by the SSS. The number of RBs occupied by the PSS is less than the number of RBs occupied by the PBCH, or the number of RBs occupied by the SSS is less than the number of RBs occupied by the PBCH. For example, assuming the number of RBs occupied by the PSS is x, then the number of RBs occupied by the SSS is also x, where x is a positive integer. The number of RBs occupied by the PBCH is y, where y is an integer greater than or equal to x.

[0148] Structure 2: In the first period, the SSS and PBCH occupy the same time-domain and frequency-domain resources, while the PSS occupies a separate time-domain resource; in the second period, the SSS and the first PBCH occupy a set of the same time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

[0149] In some embodiments, the first type of SSB includes different time-frequency resources transmitted at different periods, with each period corresponding to one type of time-frequency resource. In some embodiments, the first type of SSB includes time-frequency resources transmitted at least two periods. For example, if the first type of SSB includes time-frequency resources transmitted at two periods (a first period and a second period), then the first period corresponds to a first type of time-frequency resource, and the second period corresponds to a second type of time-frequency resource.

[0150] In some embodiments, the first time-frequency resource includes SSS and PBCH occupying the same time-domain and frequency-domain resources, while PSS occupies a separate time-domain resource. That is, the first time-frequency resource is as described in Structure 1 above.

[0151] In some embodiments, the temporal resources occupied by the PSS and the temporal resources occupied by the SSS superimposed on the PBCH are adjacent. For example, the PSS and the SSS superimposed on the PBCH occupy adjacent symbols. For instance, assuming the temporal resources occupied by the PSS are symbol 3, then the temporal resources occupied by the SSS superimposed on the PBCH are symbol 4.

[0152] In some embodiments, the second type of time-frequency resources includes the SSS and the first PBCH occupying the same set of time-domain and frequency-domain resources, and the PSS and the second PBCH occupying another set of the same time-domain and frequency-domain resources. That is, the SSS and the first PBCH occupy the same resource blocks, and the PSS and the second PBCH occupy the same resource blocks. For example, as shown in FIG9, the SSS and the first PBCH are transmitted using the same resource blocks, and the PSS and the second PBCH are transmitted using the same resource blocks.

[0153] In some embodiments, the temporal resources occupied by the SSS superimposed first PBCH and the temporal resources occupied by the PSS superimposed second PBCH are adjacent. For example, the SSS superimposed first PBCH and the PSS superimposed second PBCH occupy adjacent symbols. For instance, assuming the temporal resources occupied by the SSS superimposed first PBCH are symbol 3, then the temporal resources occupied by the PSS superimposed second PBCH are symbol 4.

[0154] In some embodiments, the frequency domain resources occupied by the SSS superimposed on the first PBCH are the same as those occupied by the PSS superimposed on the second PBCH.

[0155] Structure 3: The SSS and the first PBCH occupy the same set of time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

[0156] In some embodiments, the SSS and PSS in the first type of SSB occupy the same time-frequency resources as the PBCH, as described in the second type of time-frequency resources in Structure 2 above.

[0157] In some embodiments, the SSS and the first PBCH occupy the same set of time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources. That is, the SSS and the first PBCH occupy the same resource blocks, and the PSS and the second PBCH occupy the same resource blocks. For example, as shown in FIG10, the SSS and the first PBCH are transmitted using the same resource blocks, and the PSS and the second PBCH are transmitted using the same resource blocks.

[0158] In some embodiments, the temporal resources occupied by the SSS superimposed first PBCH and the temporal resources occupied by the PSS superimposed second PBCH are adjacent. For example, the SSS superimposed first PBCH and the PSS superimposed second PBCH occupy adjacent symbols. For instance, assuming the temporal resources occupied by the SSS superimposed first PBCH are symbol 3, then the temporal resources occupied by the PSS superimposed second PBCH are symbol 4.

[0159] In some embodiments, the frequency domain resources occupied by the SSS superimposed on the first PBCH are the same as those occupied by the PSS superimposed on the second PBCH.

[0160] In one possible interpretation, Structure 2 can be understood as a combination of Structure 1 and Structure 3. The difference is that Structure 1 transmits data in the same cycle, and Structure 3 also transmits data in one cycle, while Structure 2 transmits Structure 1 and Structure 3 in two separate cycles.

[0161] In some embodiments, the first information needs to be decoded based on DMRS. The method then further includes: receiving a second configuration corresponding to the DMRS. In some embodiments, the second configuration includes at least one of the following:

[0162] Overlay transmission of DMRS and first information;

[0163] Do not send DMRS.

[0164] In some embodiments, the terminal device transmits DMRS concurrently with the transmission of the first information based on a second configuration, enabling the network device to decode the first information based on the received DMRS.

[0165] In some embodiments, the terminal device, based on a second configuration, does not transmit DMRS while transmitting the first information. The network device can decode the first information based on the received random access preamble sequence.

[0166] In some embodiments, the PRACH transmitted on the first time-frequency resource carries a random access preamble sequence. Optionally, the preamble sequence carried in the PRACH is a long sequence; or, the preamble sequence carried in the PRACH is a short sequence. In this embodiment, the sequence length of the preamble sequence carried in the PRACH is not limited.

[0167] In some embodiments, different sequence lengths correspond to different Artificial Intelligence (AI) models. For example, long sequences correspond to a first AI model, and short sequences correspond to a second AI model. The first AI model and the second AI model are different AI models.

[0168] In some embodiments, the long sequence includes one or more sequence formats. Optionally, different long sequences may correspond to the same sequence format. For example, suppose sequence 1 and sequence 2 are both long sequences, and sequence 1 and sequence 2 have the same sequence format. Optionally, different long sequences may correspond to different sequence formats. For example, sequence 1 may correspond to sequence format 1, and sequence 2 may correspond to sequence format 2.

[0169] In some embodiments, the short sequence includes one or more sequence formats. Optionally, different short sequences may correspond to the same sequence format. Optionally, different short sequences may correspond to different sequence formats.

[0170] In some embodiments, different sequence formats correspond to different AI models. For example, sequence format 1 corresponds to the first AI model, and sequence format 2 corresponds to the second AI model. The first AI model and the second AI model are different AI models.

[0171] In summary, the method provided in this embodiment, by simultaneously sending PRACH and PUSCH, enables the terminal device to carry the first information via PUSCH. That is, the terminal device can explicitly send the first information to the network device while sending PRACH, without the PRACH implicitly carrying the information. When PRACH implicitly carries information, it consumes resources not only to carry the random access preamble sequence but also to carry the implicit information, resulting in significant resource overhead. However, by explicitly sending the first information to the network device simultaneously with PRACH, the PRACH only needs to consume resources to carry the random access preamble sequence, without consuming resources to carry the implicit information, thus saving PRACH resources.

[0172] In some embodiments, based on the embodiment shown in FIG6 above, the method further includes:

[0173] Step 320: Receive Type 1 SSB.

[0174] In some embodiments, step 320 is performed before step 220 described above. That is, when the terminal device receives a first type of SSB, it transmits a PRACH on a first time-frequency resource and a PUSCH on a second time-frequency resource.

[0175] In some embodiments, at least one of the PSS and SSS in the first type SSB is transmitted using the same time-frequency resources as the PBCH.

[0176] In some embodiments, the structure of the first type SSB includes at least one of the following:

[0177] Structure 1: SSS and PBCH occupy the same time-domain and frequency-domain resources, while PSS occupies separate time-domain resources.

[0178] Structure 2: In the first period, the SSS and PBCH occupy the same time-domain and frequency-domain resources, while the PSS occupies a separate time-domain resource; in the second period, the SSS and the first PBCH occupy a set of the same time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

[0179] Structure 3: The SSS and the first PBCH occupy the same set of time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

[0180] Specifically, each structure is described in detail in the embodiment shown in Figure 6 above.

[0181] In some embodiments, the terminal device receives a first type of SSB based on a first AI receiver. The first AI receiver is pre-deployed in the terminal device.

[0182] In some embodiments, the terminal device receives a first type of SSB and / or a second type of SSB based on a first AI receiver.

[0183] In some embodiments, the first AI receiver includes one or more AI models. Optionally, each AI model is applicable to all SSB types. For example, suppose the first AI receiver includes two AI models: a first AI model and a second AI model. The first AI model is applicable to both first-type and second-type SSBs. The second AI model is also applicable to both first-type and second-type SSBs. Optionally, different AI models are applicable to different SSB types. For example, the first AI model is applicable to first-type SSBs, and the second AI model is applicable to second-type SSBs.

[0184] For example, as shown in FIG11, in step S1, network device 120 sends an SSB to terminal device 110, including network device 120 sending a first type SSB and / or a second type SSB to terminal device 110. Terminal device 110 then receives the SSB sent by network device 120 based on a first AI receiver. When network device 120 sends a first type SSB to terminal device 110, terminal device 110 receives the first type SSB based on the first AI receiver. When network device 120 sends a second type SSB to terminal device 110, terminal device 110 receives the second type SSB based on the first AI receiver. When network device 120 sends both a first type SSB and a second SSB to terminal device 110, terminal device 110 receives the second type SSB based on the first AI receiver.

[0185] In some embodiments, based on the embodiment shown in FIG6 above, the method further includes: receiving a first configuration corresponding to the PUSCH. The terminal device sends the PUSCH to the network device based on the received first configuration.

[0186] In some embodiments, the first configuration includes at least one of the following:

[0187] Modulation and Coding Scheme (MCS);

[0188] It can transmit pre-coded data;

[0189] Precoding cannot be transmitted;

[0190] Number of ports for PUSCH;

[0191] The frequency domain offset value of the second time-frequency resource relative to the first time-frequency resource;

[0192] The RO associated with the first piece of information;

[0193] The preamble index associated with the first piece of information;

[0194] The preamble index group associated with the first piece of information.

[0195] In some embodiments, the first configuration includes an MCS. The MCS indicates the number of valid bits that each resource corresponding to the PUSCH can carry. The terminal device can determine how many resources are needed to carry the first information when sending the PUSCH based on the received MCS.

[0196] In some embodiments, the first configuration includes the ability to transmit precoding. That is, the terminal device can preprocess the first information before sending it when sending PUSCH. For example, the first information can be precoded into first precoded information before being sent.

[0197] In some embodiments, the first configuration includes not transmitting pre-encoded data. That is, the terminal device cannot pre-encode the first information before sending it when sending PUSCH.

[0198] In some embodiments, the first configuration includes a frequency domain offset value of the second time-frequency resource relative to the first time-frequency resource. The terminal device can determine the second frequency domain resource for transmitting PUSCH based on this frequency domain offset value.

[0199] In some embodiments, the first configuration includes the RO associated with the first information. The terminal device is able to send PUSCH to the RO associated with the first information.

[0200] In some embodiments, the first configuration includes a preamble index associated with the first information. When the terminal device receives the preamble index associated with the first information, the terminal device can send a PUSCH carrying the first information simultaneously with a PRACH carrying the preamble associated with the first information.

[0201] In some embodiments, the first configuration includes a preamble index group associated with the first information. When the terminal device receives the preamble index group associated with the first information, the terminal device can send a PUSCH carrying the first information simultaneously with a PRACH carrying the preamble associated with the first information.

[0202] The terminal device can send PUSCH at the same time as sending PRACH based on the received first configuration, thereby explicitly carrying the first information through PUSCH and avoiding the large resource overhead of PRACH when carrying implicit information.

[0203] In some embodiments, the terminal device needs to determine the transmission power corresponding to transmitting PRACH and PUSCH respectively. Based on the embodiment shown in FIG6 above, step 220 can be replaced by the following step:

[0204] Step 221: Transmit PRACH on the first time-frequency resource using the first transmission power, and transmit PUSCH on the second time-frequency resource using the second transmission power.

[0205] In some embodiments, the first transmission power is the transmission power used by the terminal device to transmit PRACH. The second transmission power is the transmission power used by the terminal device to transmit PUSCH.

[0206] In some embodiments, the first transmit power and / or the second transmit power are predetermined by the terminal device based on the received transmit power configuration. Alternatively, this can be understood as the terminal device determining the first transmit power and the second transmit power before transmitting PRACH and PUSCH.

[0207] In some embodiments, the transmit power configuration includes at least one of the following:

[0208] First transmission power;

[0209] Second transmission power;

[0210] The first ratio is the ratio of the first transmission power to the second transmission power;

[0211] The second ratio is the ratio of the first transmission power to the third transmission power, where the third transmission power is the maximum transmission power of the terminal device.

[0212] The third ratio is the ratio of the second transmission power to the third transmission power;

[0213] The first power limit is used to determine the first transmission power;

[0214] The second power limit is used to determine the second transmission power;

[0215] The fourth ratio is the ratio of the first power limit to the second power limit.

[0216] The fifth ratio is the ratio of the first power limit to the third transmission power;

[0217] The sixth ratio is the ratio of the second limiting power to the third transmitting power.

[0218] In some embodiments, the transmit power configuration includes a first transmit power. That is, the transmit power used by the terminal device to transmit PRACH is directly indicated. Optionally, the first transmit power is indicated in the SIB. Optionally, the first transmit power is indicated in the MIB. Optionally, the first transmit power is indicated in the PBCH.

[0219] It should be noted that when a terminal device transmits both PRACH and PUSCH simultaneously, the sum of the first transmission power used for transmitting PRACH and the second transmission power used for transmitting PUSCH at the same time can be understood as not exceeding the terminal device's maximum transmission power. In other words, the sum of the first transmission power and the second transmission power is less than or equal to the terminal device's maximum transmission power.

[0220] In some embodiments, when only the first transmission power is included in the transmission power configuration, the second transmission power is equal to the difference between the maximum transmission power of the terminal device and the first transmission power. For example, assume the first transmission power is P1 and the maximum transmission power of the terminal device is P... max Then the second transmission power P2 = P max -P1.

[0221] In some embodiments, the transmit power configuration includes a second transmit power. That is, the transmit power used by the terminal device to transmit the PUSCH is directly indicated. Optionally, the second transmit power is indicated in the SIB. Optionally, the second transmit power is indicated in the MIB. Optionally, the second transmit power is indicated in the PBCH.

[0222] In some embodiments, when only the second transmission power is included in the transmission power configuration, the first transmission power is equal to the difference between the maximum transmission power of the terminal device and the second transmission power. For example, the first transmission power P1 = P max -P2. P max P1 is the maximum transmission power of the terminal device, and P2 is the second transmission power.

[0223] In some embodiments, the transmit power configuration includes a first transmit power and a second transmit power. That is, the transmit power used by the terminal device to transmit PRACH and the transmit power used to transmit PUSCH are both directly indicated.

[0224] In some embodiments, the transmit power configuration includes a first ratio. The first ratio is the ratio of a first transmit power to a second transmit power. The first ratio can be any ratio, such as 0.95:0.05, 0.9:0.1, 0.8:0.2, 0.7:0.3, 0.6:0.4, 0.5:0.5, etc.

[0225] In some embodiments, the first ratio is determined based on the preamble sequence carried in the PRACH. In some embodiments, the first ratio is determined based on the sequence format of the preamble sequence carried in the PRACH. For example, if the sequence format of the preamble sequence carried in the PRACH is sequence format 1, the first ratio is determined to be 0.95:0.05. If the sequence format of the preamble sequence carried in the PRACH is sequence format 2, the first ratio is determined to be 0.7:0.3. That is, the first ratio is different depending on the sequence format of the preamble sequence carried in the PRACH.

[0226] In some embodiments, when only the first ratio is included in the transmission power configuration, the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal device. That is, the first transmission power and the second transmission power can be determined based on the first ratio and the maximum transmission power of the terminal device. For example, assuming the first ratio is 0.95:0.05, then the first transmission power P1 = 0.95 * the maximum transmission power P of the terminal device. max The second transmission power P2 = 0.05 * the maximum transmission power P of the terminal device max .

[0227] In some embodiments, the transmit power configuration includes a second ratio. The second ratio is the ratio of a first transmit power to a third transmit power, where the third transmit power is the maximum transmit power of the terminal device. That is, the second ratio is the ratio of the first transmit power to the maximum transmit power of the terminal device. For example, P max P1 is the maximum transmission power of the terminal device, and P2 is the first transmission power. In some embodiments, the second ratio can be any value, such as 0.9, 0.8, 0.7, or 0.6, etc.

[0228] In some embodiments, when only the second ratio is included in the transmit power configuration, the first transmit power is equal to the product of the terminal device's maximum transmit power and the second ratio. For example, assuming the second ratio is 0.9, then the first transmit power P1 = 0.9 * the terminal device's maximum transmit power P max Generally, the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal device. Therefore, the second transmission power P2 = P... max -P1.

[0229] In some embodiments, the transmit power configuration includes a third ratio. The third ratio is the ratio of the second transmit power to the third transmit power. That is, the third ratio is the ratio of the second transmit power to the maximum transmit power of the terminal device. For example, Pmax P1 is the maximum transmission power of the terminal device, and P2 is the second transmission power. In some embodiments, the third ratio can be any value, such as 0.5, 0.4, 0.3, or 0.1, etc.

[0230] In some embodiments, when only the third ratio is included in the transmit power configuration, the second transmit power is equal to the product of the terminal device's maximum transmit power and the third ratio. For example, assuming the third ratio is 0.4, then the second transmit power P2 = 0.4 * the terminal device's maximum transmit power P. max Generally, the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal device. Therefore, the first transmission power P1 = P... max -P2.

[0231] In some embodiments, the transmit power configuration includes a first limiting power, which is used to determine a first transmit power. For example, the first transmit power P1 = min{P limit,PRACH P PRACH,target +PL};P limit,PRACH It is the first limiting power, P PRACH,target PL is the target transmit power of PRACH, and PL is the path loss.

[0232] Generally, the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal device. Therefore, the second transmission power P2 = P max -P1.

[0233] In some embodiments, the transmit power configuration includes a second limiting power, which is used to determine the second transmit power. For example, the second transmit power P2 = min{P... limit,PUSCH P PUSCH,target +PL};P limit,PUSCH It is the second limiting power, P PUSCH,target PL is the target transmit power of PUSCH, and PL is the path loss.

[0234] Generally, the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal device. Therefore, the first transmission power P1 = P max -P2.

[0235] In some embodiments, the transmit power configuration includes a fourth ratio. The fourth ratio is the ratio of a first limiting power to a second limiting power. The first limiting power is used to determine the first transmit power, and the second limiting power is used to determine the second transmit power. For example,

[0236] In some embodiments, the transmit power configuration includes a fifth ratio. The fifth ratio is the ratio of a first limited power to a third transmit power. The first limited power is used to determine the first transmit power, and the third transmit power is the maximum transmit power of the terminal device. That is, the fifth ratio is the ratio of the first limited power to the maximum transmit power of the terminal device. For example,

[0237] In some embodiments, the transmit power configuration includes a sixth ratio. The sixth ratio is the ratio of a second limiting power to a third transmit power. The second limiting power is used to determine the second transmit power, and the third transmit power is the maximum transmit power of the terminal device. That is, the sixth ratio is the ratio of the second limiting power to the maximum transmit power of the terminal device. For example,

[0238] In some embodiments, the method further includes receiving a transmit power configuration.

[0239] In summary, the method provided in this embodiment determines a first transmission power and a second transmission power through transmission power configuration, enabling the terminal device to transmit PRACH and PUSCH at a determined transmission power.

[0240] In some embodiments, based on the embodiment shown in FIG6 above, the terminal device may send PRACH and PUSCH simultaneously in the following ways:

[0241] Scenario 1: PRACH is sent successfully, and PUSCH is sent successfully;

[0242] Scenario 2: PRACH is sent successfully, but PUSCH is not sent successfully;

[0243] Scenario 3: PRACH fails to send, but PUSCH is sent successfully;

[0244] Scenario 4: PRACH fails to be sent, and PUSCH fails to be sent either.

[0245] In scenario one, if both PRACH and PUSCH are successfully sent, it indicates that the network device can accurately receive both PRACH and PUSCH, and can continue the current access procedure until random access is successful. The current access procedure refers to the access procedure that explicitly indicates the first information using the resources occupied by the PUSCH. For example, for a four-step random access procedure, as shown in Figure 12, message 1 (Msg1) includes both the random access preamble and the first information. For a two-step random access procedure, as shown in Figure 13, message A includes: the random access preamble, the first information, and the UE ID.

[0246] In scenario two, if the PRACH is successfully sent but the PUSCH is not, it means the network device has accurately received the PRACH but cannot obtain the beam information, thus the random access failed. In this case, it is necessary to send the PUSCH to the network device again.

[0247] In some embodiments, if PUSCH transmission succeeds but PRACH transmission fails, PRACH is transmitted on the first time-frequency resource using a fourth transmission power. Fourth transmission power = P PRACH,target +PL, P PRACH,target PL is the target transmit power of PRACH, and PL is the path loss.

[0248] In scenario three, if the PRACH transmission fails but the PUSCH transmission succeeds, it means the network device has accurately received the PUSCH but not the random access preamble, thus the random access failed. In this case, it is necessary to send the PRACH to the network device again.

[0249] In some embodiments, if PRACH transmission is successful but PUSCH transmission fails, PUSCH is transmitted on the second time-frequency resource using a fifth transmission power. Fifth transmission power = P PUSCH,target +PL, P PUSCH,target PL is the target transmit power of PUSCH, and PL is the path loss.

[0250] In scenario four, if both PRACH and PUSCH fail to send, it indicates that the network device did not receive the random access preamble or beam information, and random access failed. In this case, step 220 needs to be re-executed, i.e., the PRACH and PUSCH need to be resent to the network device.

[0251] In some embodiments, based on the embodiment shown in FIG6 above, the method further includes:

[0252] Step 420: If the first condition is met, the current access procedure is rolled back to the traditional access procedure, which is an access procedure that uses the random access resources occupied by PRACH to implicitly indicate the first information.

[0253] In some embodiments, step 420 is performed after step 220 described above. That is, after sending PRACH and PUSCH, the terminal device determines whether the first condition is met. If the first condition is not met, the current access procedure continues; if the first condition is met, the current access procedure is rolled back to the traditional access procedure. That is, the access procedure shown in FIG12 is rolled back to the access procedure shown in FIG1, or the access procedure shown in FIG13 is rolled back to the access procedure shown in FIG2.

[0254] In some embodiments, the first condition includes at least one of the following:

[0255] The number of failed PRACH transmissions exceeds the threshold for the first transmission.

[0256] The number of failed PUSCH transmissions exceeds the second threshold.

[0257] The first timer timed out.

[0258] In some embodiments, if the number of failed PRACH transmissions exceeds a first-time failure threshold, the current access procedure is rolled back to a traditional access procedure. The first-time failure threshold indicates the maximum number of allowed PRACH transmission failures; for example, a first-time failure threshold of 5 means that a maximum of 5 PRACH transmission failures are allowed. The first-time failure threshold is pre-configured by the network device or pre-defined by the communication protocol.

[0259] In some embodiments, if the number of failed PUSCH transmissions exceeds a second threshold, the current access procedure is rolled back to a traditional access procedure. The second threshold indicates the maximum number of allowed PUSCH transmission failures; for example, a second threshold of 5 means that a maximum of 5 PUSCH transmission failures are allowed. The second threshold is either pre-configured by the network device or pre-defined by the communication protocol.

[0260] In some embodiments, if the first timer times out, the current access procedure is rolled back to a traditional access procedure. The time range of the first timer is shorter than that of the second timer. The first timer and the second timer start at the same time. The first timer and the second timer begin counting when the terminal device initially accesses the network device.

[0261] In some embodiments, the time range of the first timer is pre-configured by the network device, or the time range of the first timer is pre-defined by the communication protocol. The time range of the second timer is pre-configured by the network device, or the time range of the second timer is pre-defined by the communication protocol.

[0262] In some embodiments, a second timer is started when the terminal device initially accesses the network device. While the second timer is running, the Media Access Control (MAC) layer initiates the random access procedure. After the terminal device transmits the random access preamble (RAR), i.e., after sending message 1 or message A to the network device, the terminal device attempts to detect the RAR. If the RAR is successfully received, the terminal device continues the random access procedure; otherwise, the terminal device increments the maximum number of attempts count. If the maximum number of attempts has not been reached, the terminal device ramps up power and re-attempts to transmit the random access preamble. If the maximum number of attempts has been reached and the RAR has still not been successfully received, the terminal device reports to the higher layers. If the second timer has not stopped at this point, the higher layers may retry the random access procedure.

[0263] In some embodiments, the first timer and the second timer run simultaneously, and the time range of the first timer is smaller than that of the second timer. Within the time frame during which the terminal device attempts to access the network device, if the current access procedure fails to connect, it can promptly switch to the traditional access procedure, avoiding prolonged network access time for the terminal device.

[0264] Figure 14 illustrates a flowchart of a random access channel transmission method provided in an exemplary embodiment of this application. The method is applicable to four-step random access and / or two-step random access. The method is performed by a network device and includes:

[0265] Step 520: Receive the PRACH transmitted on the first time-frequency resource and the PUSCH transmitted on the second time-frequency resource. The PUSCH carries first information. The first time-domain resource corresponding to the first time-frequency resource overlaps with the second time-domain resource corresponding to the second time-frequency resource.

[0266] In some embodiments, the first time-frequency resource is a resource for transmitting PRACH. The first time-frequency resource includes a first time-domain resource for transmitting PRACH and a first frequency-domain resource for transmitting PRACH.

[0267] In some embodiments, the second time-frequency resource is a resource for transmitting PUSCH. The second time-frequency resource includes a second time-domain resource for transmitting PUSCH and a second frequency-domain resource for transmitting PUSCH.

[0268] In some embodiments, the first time-domain resource and the second time-domain resource overlap. Alternatively, this can be understood as the first time-domain resource and the second time-domain resource being identical. Or, this can be understood as PRACH and PUSCH being transmitted simultaneously.

[0269] In some embodiments, the first time-domain resource corresponding to the first time-frequency resource overlaps with the second time-domain resource corresponding to the second time-frequency resource, including at least one of the following:

[0270] The first time domain resource and the second time domain resource have the same period;

[0271] The first time domain resources and the second time domain resources occupy the same time slot;

[0272] The first time domain resource and the second time domain resource occupy the same symbol.

[0273] In some embodiments, PRACH is transmitted periodically, meaning the first time-domain resource corresponds to a first transmission period. The terminal device transmits PRACH periodically according to the first transmission period. Similarly, PUSCH is also transmitted periodically, with the second time-domain resource corresponding to a second transmission period. The terminal device transmits PUSCH according to the second transmission period. The first and second transmission periods are the same. It should be understood that "the first and second transmission periods are the same" here means that the first and second transmission periods are the same transmission period. That is, PRACH and PUSCH are transmitted periodically according to the same transmission period.

[0274] In some embodiments, the first time-domain resource and the second time-domain resource occupy the same time slot. For example, both the first time-domain resource and the second time-domain resource occupy time slot 1.

[0275] In some embodiments, the first temporal resource and the second temporal resource occupy the same subframe. For example, both the first temporal resource and the second temporal resource occupy subframe 1.

[0276] In some embodiments, the first time-domain resource and the second time-domain resource occupy the same symbol.

[0277] In some embodiments, the first starting time domain position of the first time domain resource and the second starting time domain position of the second time domain resource are the same, and / or, the first ending time domain position of the first time domain resource and the second ending time domain position of the second time domain resource are the same. The first starting time domain position is the starting time domain position of the second time domain resource, and the second starting time domain position is the starting time domain position of the second time domain resource.

[0278] In this embodiment, the example of the first time domain resource and the second time domain resource occupying the same symbol is used for illustration.

[0279] In some embodiments, the first frequency domain resource corresponding to the first time-frequency resource may or may not overlap with the second frequency domain resource corresponding to the second time-frequency resource.

[0280] In some embodiments, the first frequency domain resources and the second frequency domain resources overlap. Alternatively, this can be understood as the first frequency domain resources and the second frequency domain resources being identical.

[0281] In some embodiments, the first frequency domain resource corresponding to the first time-frequency resource overlaps with the second frequency domain resource corresponding to the second time-frequency resource, including at least one of the following:

[0282] The first frequency domain resource and the second frequency domain resource have the same period;

[0283] The first frequency domain resources and the second frequency domain resources occupy the same RB;

[0284] The first frequency domain resources and the second frequency domain resources occupy the same subcarriers;

[0285] The first starting frequency domain position of the first frequency domain resource is the same as the second starting frequency domain position of the second frequency domain resource.

[0286] The first end frequency domain position of the first frequency domain resource is the same as the second end frequency domain position of the second frequency domain resource.

[0287] Wherein, the first starting frequency domain position is the starting frequency domain position of the first frequency domain resource, and the second starting frequency domain position is the starting frequency domain position of the second frequency domain resource.

[0288] In some embodiments, the first frequency domain resource corresponding to the first time-frequency resource may or may not overlap with the second frequency domain resource corresponding to the second time-frequency resource, including:

[0289] The first starting frequency domain position is different from the second starting frequency domain position, and the number of RBs occupied by the first frequency domain resources and the second time domain resources is the same; or, the second starting frequency domain position is different from the first starting frequency domain position, and the number of RBs occupied by the first frequency domain resources and the second time domain resources is different; or, the first starting frequency domain position is the same as the second starting frequency domain position, and the number of RBs occupied by the first frequency domain resources and the second time domain resources is different; or, the first starting frequency domain position is the same as the second starting frequency domain position, and the number of RBs occupied by the first frequency domain resources and the second time domain resources is the same.

[0290] In some embodiments, the first time-frequency resource and the second time-frequency resource are associated in a predefined manner.

[0291] In some embodiments, the first time-frequency resource and the second time-frequency resource are pre-configured by the network device.

[0292] In some embodiments, the network device pre-configures the offset values ​​of the first time-frequency resource and the second time-frequency resource relative to the first time-frequency resource. When the network device pre-configures the first time-frequency resource, the offset value of the second time-frequency resource relative to the first time-frequency resource is used to determine the second time-frequency resource.

[0293] In some embodiments, the first information is used to indicate the SSB associated with PRACH. In some embodiments, the first information is also used to indicate CSI-RS. In some embodiments, the first information is also used to indicate DMRS.

[0294] In some embodiments, the first information includes at least one of the following:

[0295] • SSB index;

[0296] • RSRP obtained based on SSB measurement.

[0297] In some embodiments, the first information may also include RSRQ obtained based on SSB measurements.

[0298] In some embodiments, the first information also includes SINR obtained based on SSB measurements.

[0299] In some embodiments, the SSB in the first information may be a first type SSB, or a second type SSB.

[0300] In some embodiments, the PSS, SSS and PBCH in the second type SSB are transmitted using a set of different time-frequency resources with relative positional relationships.

[0301] In some embodiments, at least one of the PSS and SSS in the first type SSB is transmitted using the same time-frequency resources as the PBCH.

[0302] In some embodiments, the structure of the first type SSB includes at least one of the following:

[0303] Structure 1: SSS and PBCH occupy the same time-domain and frequency-domain resources, while PSS occupies separate time-domain resources.

[0304] In some embodiments, the SSS and PBCH in the first type SSB occupy the same time-domain and frequency-domain resources. That is, the SSS and PBCH in the first type SSB occupy the same resource blocks. For example, as shown in FIG8, the SSS and PBCH are transmitted using the same resource blocks, while the PSS is transmitted using a separate resource block.

[0305] In some embodiments, the temporal resources occupied by the PSS and the temporal resources occupied by the SSS superimposed on the PBCH are adjacent. For example, the PSS and the SSS superimposed on the PBCH occupy adjacent symbols. For instance, assuming the temporal resources occupied by the PSS are symbol 3, then the temporal resources occupied by the SSS superimposed on the PBCH are symbol 4.

[0306] In some embodiments, the PSS is used to determine the synchronization grid and to detect the cell identifier.

[0307] In some embodiments, the number of RBs occupied by the PSS is the same as the number of RBs occupied by the SSS. The number of RBs occupied by the PSS is less than the number of RBs occupied by the PBCH, or the number of RBs occupied by the SSS is less than the number of RBs occupied by the PBCH. For example, assuming the number of RBs occupied by the PSS is x, then the number of RBs occupied by the SSS is also x, where x is a positive integer. The number of RBs occupied by the PBCH is y, where y is an integer greater than or equal to x.

[0308] Structure 2: In the first period, the SSS and PBCH occupy the same time-domain and frequency-domain resources, while the PSS occupies a separate time-domain resource; in the second period, the SSS and the first PBCH occupy a set of the same time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

[0309] In some embodiments, the first type of SSB includes different time-frequency resources transmitted at different periods, with each period corresponding to one type of time-frequency resource. In some embodiments, the first type of SSB includes time-frequency resources transmitted at least two periods. For example, if the first type of SSB includes time-frequency resources transmitted at two periods (a first period and a second period), then the first period corresponds to a first type of time-frequency resource, and the second period corresponds to a second type of time-frequency resource.

[0310] In some embodiments, the first time-frequency resource includes SSS and PBCH occupying the same time-domain and frequency-domain resources, while PSS occupies a separate time-domain resource. That is, the first time-frequency resource is as described in Structure 1 above.

[0311] In some embodiments, the temporal resources occupied by the PSS and the temporal resources occupied by the SSS superimposed on the PBCH are adjacent. For example, the PSS and the SSS superimposed on the PBCH occupy adjacent symbols. For instance, assuming the temporal resources occupied by the PSS are symbol 3, then the temporal resources occupied by the SSS superimposed on the PBCH are symbol 4.

[0312] In some embodiments, the second type of time-frequency resources includes the SSS and the first PBCH occupying the same set of time-domain and frequency-domain resources, and the PSS and the second PBCH occupying another set of the same time-domain and frequency-domain resources. That is, the SSS and the first PBCH occupy the same resource blocks, and the PSS and the second PBCH occupy the same resource blocks. For example, as shown in FIG9, the SSS and the first PBCH are transmitted using the same resource blocks, and the PSS and the second PBCH are transmitted using the same resource blocks.

[0313] In some embodiments, the temporal resources occupied by the SSS superimposed first PBCH and the temporal resources occupied by the PSS superimposed second PBCH are adjacent. For example, the SSS superimposed first PBCH and the PSS superimposed second PBCH occupy adjacent symbols. For instance, assuming the temporal resources occupied by the SSS superimposed first PBCH are symbol 3, then the temporal resources occupied by the PSS superimposed second PBCH are symbol 4.

[0314] In some embodiments, the frequency domain resources occupied by the SSS superimposed on the first PBCH are the same as those occupied by the PSS superimposed on the second PBCH.

[0315] Structure 3: The SSS and the first PBCH occupy the same set of time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

[0316] In some embodiments, the SSS and PSS in the first type of SSB occupy the same time-frequency resources as the PBCH, as described in the second type of time-frequency resources in Structure 2 above.

[0317] In some embodiments, the SSS and the first PBCH occupy the same set of time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources. That is, the SSS and the first PBCH occupy the same resource blocks, and the PSS and the second PBCH occupy the same resource blocks. For example, as shown in FIG10, the SSS and the first PBCH are transmitted using the same resource blocks, and the PSS and the second PBCH are transmitted using the same resource blocks.

[0318] In some embodiments, the temporal resources occupied by the SSS superimposed first PBCH and the temporal resources occupied by the PSS superimposed second PBCH are adjacent. For example, the SSS superimposed first PBCH and the PSS superimposed second PBCH occupy adjacent symbols. For instance, assuming the temporal resources occupied by the SSS superimposed first PBCH are symbol 3, then the temporal resources occupied by the PSS superimposed second PBCH are symbol 4.

[0319] In some embodiments, the frequency domain resources occupied by the SSS superimposed on the first PBCH are the same as those occupied by the PSS superimposed on the second PBCH.

[0320] In one possible interpretation, Structure 2 can be understood as a combination of Structure 1 and Structure 3. The difference is that Structure 1 transmits data in the same cycle, and Structure 3 also transmits data in one cycle, while Structure 2 transmits Structure 1 and Structure 3 in two separate cycles.

[0321] In some embodiments, the first information needs to be decoded based on DMRS. The method then further includes: sending a second configuration corresponding to the DMRS. In some embodiments, the second configuration includes at least one of the following:

[0322] Overlay transmission of DMRS and first information;

[0323] Do not send DMRS.

[0324] In some embodiments, the terminal device transmits DMRS concurrently with the transmission of the first information based on a second configuration, enabling the network device to decode the first information based on the received DMRS.

[0325] In some embodiments, the terminal device, based on a second configuration, does not transmit DMRS while transmitting the first information. The network device can decode the first information based on the received random access preamble sequence.

[0326] In some embodiments, the PRACH transmitted on the first time-frequency resource carries a random access preamble sequence. Optionally, the preamble sequence carried in the PRACH is a long sequence; or, the preamble sequence carried in the PRACH is a short sequence. In this embodiment, the sequence length of the preamble sequence carried in the PRACH is not limited.

[0327] In some embodiments, different sequence lengths correspond to different AI models. For example, long sequences correspond to the first AI model, and short sequences correspond to the second AI model. The first AI model and the second AI model are different AI models.

[0328] In some embodiments, the long sequence includes one or more sequence formats. Optionally, different long sequences may correspond to the same sequence format. For example, suppose sequence 1 and sequence 2 are both long sequences, and sequence 1 and sequence 2 have the same sequence format. Optionally, different long sequences may correspond to different sequence formats. For example, sequence 1 may correspond to sequence format 1, and sequence 2 may correspond to sequence format 2.

[0329] In some embodiments, the short sequence includes one or more sequence formats. Optionally, different short sequences may correspond to the same sequence format. Optionally, different short sequences may correspond to different sequence formats.

[0330] In some embodiments, different sequence formats correspond to different AI models. For example, sequence format 1 corresponds to the first AI model, and sequence format 2 corresponds to the second AI model. The first AI model and the second AI model are different AI models.

[0331] In summary, the method provided in this embodiment enables the terminal device to carry the first information through the PUSCH by receiving and sending PRACH and PUSCH simultaneously. That is, the terminal device can send the first information to the network device directly and explicitly while sending PRACH, without the need for PRACH to carry information implicitly. This avoids the large resource overhead of PRACH when it carries implicit information.

[0332] In some embodiments, based on the embodiment shown in FIG14 above, the method further includes: sending a first configuration corresponding to the PUSCH. The terminal device sends the PUSCH to the network device based on the received first configuration.

[0333] In some embodiments, the first configuration includes at least one of the following:

[0334] MCS;

[0335] It can transmit pre-coded data;

[0336] Precoding cannot be transmitted;

[0337] Number of ports for PUSCH;

[0338] The frequency domain offset value of the second time-frequency resource relative to the first time-frequency resource;

[0339] The RO associated with the first piece of information;

[0340] The preamble index associated with the first piece of information;

[0341] The preamble index group associated with the first piece of information.

[0342] The terminal device can send PUSCH at the same time as sending PRACH based on the received first configuration, thereby explicitly carrying the first information through PUSCH and avoiding the large resource overhead of PRACH when carrying implicit information.

[0343] In some embodiments, based on the embodiment shown in FIG14 above, the method further includes:

[0344] Step 620: Send the first type SSB.

[0345] In some embodiments, step 620 is performed before step 520 described above. That is, when the network device sends a first type SSB to the terminal device, it receives a PRACH transmitted on a first time-frequency resource and a PUSCH transmitted on a second time-frequency resource.

[0346] In some embodiments, at least one of the PSS and SSS in the first type SSB is transmitted using the same time-frequency resources as the PBCH.

[0347] In some embodiments, the structure of the first type SSB includes at least one of the following:

[0348] Structure 1: SSS and PBCH occupy the same time-domain and frequency-domain resources, while PSS occupies separate time-domain resources.

[0349] Structure 2: In the first period, the SSS and PBCH occupy the same time-domain and frequency-domain resources, while the PSS occupies a separate time-domain resource; in the second period, the SSS and the first PBCH occupy a set of the same time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

[0350] Structure 3: The SSS and the first PBCH occupy the same set of time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

[0351] Specifically, each structure is described in detail in the embodiment shown in Figure 14 above.

[0352] In some embodiments, the terminal device receives a first type of SSB based on a first AI receiver. The first AI receiver is pre-deployed in the terminal device.

[0353] In some embodiments, the terminal device receives a first type of SSB and / or a second type of SSB based on a first AI receiver.

[0354] In some embodiments, the first AI receiver includes one or more AI models. Optionally, each AI model is applicable to all SSB types. For example, suppose the first AI receiver includes two AI models: a first AI model and a second AI model. The first AI model is applicable to both first-type and second-type SSBs. The second AI model is also applicable to both first-type and second-type SSBs. Optionally, different AI models are applicable to different SSB types. For example, the first AI model is applicable to first-type SSBs, and the second AI model is applicable to second-type SSBs.

[0355] For example, as shown in FIG11, in step S1, network device 120 sends an SSB to terminal device 110, including network device 120 sending a first type SSB and / or a second type SSB to terminal device 110. Terminal device 110 then receives the SSB sent by network device 120 based on a first AI receiver. When network device 120 sends a first type SSB to terminal device 110, terminal device 110 receives the first type SSB based on the first AI receiver. When network device 120 sends a second type SSB to terminal device 110, terminal device 110 receives the second type SSB based on the first AI receiver. When network device 120 sends both a first type SSB and a second SSB to terminal device 110, terminal device 110 receives both types of SSB based on the first AI receiver.

[0356] In some embodiments, the network device receives PRACH and PUSCH based on the second AI receiver. Based on the embodiment shown in FIG6 above, step 520 can be replaced by the following steps:

[0357] Step 521: Receive the PRACH transmitted on the first time-frequency resource and the PUSCH transmitted on the second time-frequency resource using the second AI receiver.

[0358] In some embodiments, the second AI receiver is pre-deployed in the network equipment.

[0359] In some embodiments, the second AI receiver includes one or more AI models. Optionally, each AI model is applicable to both PRACH and PUSCH. For example, suppose the second AI receiver includes two AI models: a first AI model and a second AI model. The first AI model is applicable to both PRACH and PUSCH. The second AI model is also applicable to both PRACH and PUSCH. Optionally, different AI models are applicable to different transmission channels. For example, the first AI model is applicable to PRACH, and the second AI model is applicable to PUSCH.

[0360] For example, as shown in FIG11, in step S2, terminal device 110 simultaneously sends PRACH and PUSCH to network device 120. Network device 120 then receives the PRACH and PUSCH sent by terminal device 110 based on the second AI receiver.

[0361] In some embodiments, the terminal device needs to determine the corresponding transmission power for each PRACH and PUSCH before sending them. Optionally, this transmission power is determined based on the transmission power configuration sent by the network device. Based on the embodiment shown in Figure 14 above, the method further includes:

[0362] Step 720: Send transmit power configuration to instruct the terminal device to send PRACH and / or send PUSCH.

[0363] In some embodiments, the transmit power configuration includes at least one of the following:

[0364] First transmission power;

[0365] Second transmission power;

[0366] The first ratio is the ratio of the first transmission power to the second transmission power;

[0367] The second ratio is the ratio of the first transmission power to the third transmission power, where the third transmission power is the maximum transmission power of the terminal device.

[0368] The third ratio is the ratio of the second transmission power to the third transmission power;

[0369] The first power limit is used to determine the first transmission power;

[0370] The second power limit is used to determine the second transmission power;

[0371] The fourth ratio is the ratio of the first power limit to the second power limit.

[0372] The fifth ratio is the ratio of the first power limit to the third transmission power;

[0373] The sixth ratio is the ratio of the second limiting power to the third transmitting power.

[0374] In some embodiments, the transmit power configuration includes a first transmit power. That is, the transmit power used by the terminal device to transmit PRACH is directly indicated. Optionally, the first transmit power is indicated in the SIB. Optionally, the first transmit power is indicated in the MIB. Optionally, the first transmit power is indicated in the PBCH.

[0375] It should be noted that when a terminal device transmits both PRACH and PUSCH simultaneously, the sum of the first transmission power used for transmitting PRACH and the second transmission power used for transmitting PUSCH at the same time can be understood as not exceeding the terminal device's maximum transmission power. In other words, the sum of the first transmission power and the second transmission power is less than or equal to the terminal device's maximum transmission power.

[0376] In some embodiments, when only the first transmission power is included in the transmission power configuration, the second transmission power is equal to the difference between the maximum transmission power of the terminal device and the first transmission power. For example, assume the first transmission power is P1 and the maximum transmission power of the terminal device is P... max Then the second transmission power P2 = P max -P1.

[0377] In some embodiments, the transmit power configuration includes a second transmit power. That is, the transmit power used by the terminal device to transmit the PUSCH is directly indicated. Optionally, the second transmit power is indicated in the SIB. Optionally, the second transmit power is indicated in the MIB. Optionally, the second transmit power is indicated in the PBCH.

[0378] In some embodiments, when only the second transmission power is included in the transmission power configuration, the first transmission power is equal to the difference between the maximum transmission power of the terminal device and the second transmission power. For example, the first transmission power P1 = P max -P2. P max P1 is the maximum transmission power of the terminal device, and P2 is the second transmission power.

[0379] In some embodiments, the transmit power configuration includes a first transmit power and a second transmit power. That is, the transmit power used by the terminal device to transmit PRACH and the transmit power used to transmit PUSCH are both directly indicated.

[0380] In some embodiments, the transmit power configuration includes a first ratio. The first ratio is the ratio of a first transmit power to a second transmit power. The first ratio can be any ratio, such as 0.95:0.05, 0.9:0.1, 0.8:0.2, 0.7:0.3, 0.6:0.4, 0.5:0.5, etc.

[0381] In some embodiments, the first ratio is determined based on the preamble sequence carried in the PRACH. In some embodiments, the first ratio is determined based on the sequence format of the preamble sequence carried in the PRACH. For example, if the sequence format of the preamble sequence carried in the PRACH is sequence format 1, the first ratio is determined to be 0.95:0.05. If the sequence format of the preamble sequence carried in the PRACH is sequence format 2, the first ratio is determined to be 0.7:0.3. That is, the first ratio is different depending on the sequence format of the preamble sequence carried in the PRACH.

[0382] In some embodiments, when only the first ratio is included in the transmission power configuration, the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal device. That is, the first transmission power and the second transmission power can be determined based on the first ratio and the maximum transmission power of the terminal device. For example, assuming the first ratio is 0.95:0.05, then the first transmission power P1 = 0.95 * the maximum transmission power P of the terminal device. max The second transmission power P2 = 0.05 * the maximum transmission power P of the terminal device max .

[0383] In some embodiments, the transmit power configuration includes a second ratio. The second ratio is the ratio of a first transmit power to a third transmit power, where the third transmit power is the maximum transmit power of the terminal device. That is, the second ratio is the ratio of the first transmit power to the maximum transmit power of the terminal device. For example, P max P1 is the maximum transmission power of the terminal device, and P2 is the first transmission power. In some embodiments, the second ratio can be any value, such as 0.9, 0.8, 0.7, or 0.6, etc.

[0384] In some embodiments, when only the second ratio is included in the transmit power configuration, the first transmit power is equal to the product of the terminal device's maximum transmit power and the second ratio. For example, assuming the second ratio is 0.9, then the first transmit power P1 = 0.9 * the terminal device's maximum transmit power P max Generally, the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal device. Therefore, the second transmission power P2 = P... max -P1.

[0385] In some embodiments, the transmit power configuration includes a third ratio. The third ratio is the ratio of the second transmit power to the third transmit power.

[0386] That is, the third ratio is the ratio of the second transmission power to the maximum transmission power of the terminal device. For example, P max P1 is the maximum transmission power of the terminal device, and P2 is the second transmission power. In some embodiments, the third ratio can be any value, such as 0.5, 0.4, 0.3, or 0.1, etc.

[0387] In some embodiments, when only the third ratio is included in the transmit power configuration, the second transmit power is equal to the product of the terminal device's maximum transmit power and the third ratio. For example, assuming the third ratio is 0.4, then the second transmit power P2 = 0.4 * the terminal device's maximum transmit power P. maxGenerally, the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal device. Therefore, the first transmission power P1 = P... max -P2.

[0388] In some embodiments, the transmit power configuration includes a first limiting power, which is used to determine a first transmit power. For example, the first transmit power P1 = min{P limit,PRACH P PRACH,target +PL};P limit,PRACH It is the first limiting power, P PRACH,target PL is the target transmit power of PRACH, and PL is the path loss.

[0389] Generally, the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal device. Therefore, the second transmission power P2 = P max -P1.

[0390] In some embodiments, the transmit power configuration includes a second limiting power, which is used to determine the second transmit power. For example, the second transmit power P2 = min{P... limit,PUSCH P PUSCH,target +PL};P limit,PUSCH It is the second limiting power, P PUSCH,target PL is the target transmit power of PUSCH, and PL is the path loss.

[0391] Generally, the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal device. Therefore, the first transmission power P1 = P max -P2.

[0392] In some embodiments, the transmit power configuration includes a fourth ratio. The fourth ratio is the ratio of a first limiting power to a second limiting power. The first limiting power is used to determine the first transmit power, and the second limiting power is used to determine the second transmit power. For example,

[0393] In some embodiments, the transmit power configuration includes a fifth ratio. The fifth ratio is the ratio of a first limited power to a third transmit power. The first limited power is used to determine the first transmit power, and the third transmit power is the maximum transmit power of the terminal device. That is, the fifth ratio is the ratio of the first limited power to the maximum transmit power of the terminal device. For example,

[0394] In some embodiments, the transmit power configuration includes a sixth ratio. The sixth ratio is the ratio of a second limiting power to a third transmit power. The second limiting power is used to determine the second transmit power, and the third transmit power is the maximum transmit power of the terminal device. That is, the sixth ratio is the ratio of the second limiting power to the maximum transmit power of the terminal device. For example,

[0395] In summary, the method provided in this embodiment determines a first transmission power and a second transmission power through transmission power configuration, enabling the terminal device to transmit PRACH and PUSCH at a determined transmission power.

[0396] Figure 15 illustrates a flowchart of an SSB transmission method provided in an exemplary embodiment of this application. The method is executed by a terminal device and includes:

[0397] Step 820: Receive a first type SSB, where at least one of the PSS and SSS in the first type SSB is transmitted using the same time-frequency resources as the PBCH.

[0398] In some embodiments, the structure of the first type SSB includes at least one of the following:

[0399] Structure 1: SSS and PBCH occupy the same time-domain and frequency-domain resources, while PSS occupies separate time-domain resources.

[0400] Structure 2: In the first period, the SSS and PBCH occupy the same time-domain and frequency-domain resources, while the PSS occupies a separate time-domain resource; in the second period, the SSS and the first PBCH occupy a set of the same time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

[0401] Structure 3: The SSS and the first PBCH occupy the same set of time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

[0402] Specifically, each structure is described in detail in the embodiment shown in Figure 6 above.

[0403] In some embodiments, the terminal device receives a first type of SSB based on a first AI receiver. The first AI receiver is pre-deployed in the terminal device.

[0404] In some embodiments, the terminal device receives a first type of SSB and / or a second type of SSB based on a first AI receiver.

[0405] In some embodiments, the first AI receiver includes one or more AI models. Optionally, each AI model is applicable to all SSB types. For example, suppose the first AI receiver includes two AI models: a first AI model and a second AI model. The first AI model is applicable to both first-type and second-type SSBs. The second AI model is also applicable to both first-type and second-type SSBs. Optionally, different AI models are applicable to different SSB types. For example, the first AI model is applicable to first-type SSBs, and the second AI model is applicable to second-type SSBs.

[0406] For example, as shown in FIG11, in step S1, network device 120 sends an SSB to terminal device 110, including network device 120 sending a first type SSB and / or a second type SSB to terminal device 110. Terminal device 110 then receives the SSB sent by network device 120 based on a first AI receiver. When network device 120 sends a first type SSB to terminal device 110, terminal device 110 receives the first type SSB based on the first AI receiver. When network device 120 sends a second type SSB to terminal device 110, terminal device 110 receives the second type SSB based on the first AI receiver. When network device 120 sends both a first type SSB and a second SSB to terminal device 110, terminal device 110 receives the second type SSB based on the first AI receiver.

[0407] Figure 16 illustrates a flowchart of an SSB transmission method provided in an exemplary embodiment of this application. The method is performed by a network device and includes:

[0408] Step 920: Send a first type SSB, where at least one of the PSS and SSS in the first type SSB is sent using the same time-frequency resources as the PBCH.

[0409] In some embodiments, the structure of the first type SSB includes at least one of the following:

[0410] Structure 1: SSS and PBCH occupy the same time-domain and frequency-domain resources, while PSS occupies separate time-domain resources.

[0411] Structure 2: In the first period, the SSS and PBCH occupy the same time-domain and frequency-domain resources, while the PSS occupies a separate time-domain resource; in the second period, the SSS and the first PBCH occupy a set of the same time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

[0412] Structure 3: The SSS and the first PBCH occupy the same set of time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

[0413] Specifically, each structure is described in detail in the embodiment shown in Figure 14 above.

[0414] Figure 17 shows a structural block diagram of a transmission apparatus for a random access channel provided in an exemplary embodiment of this application. The apparatus includes:

[0415] The transmitting module 1710 is used to transmit PRACH on a first time-frequency resource and transmit PUSCH on a second time-frequency resource. The PUSCH carries first information, and the first time-domain resource corresponding to the first time-frequency resource overlaps with the second time-domain resource corresponding to the second time-frequency resource.

[0416] In some embodiments, the first time-frequency resource is a resource for transmitting PRACH. The first time-frequency resource includes a first time-domain resource for transmitting PRACH and a first frequency-domain resource for transmitting PRACH.

[0417] In some embodiments, the second time-frequency resource is a resource for transmitting PUSCH. The second time-frequency resource includes a second time-domain resource for transmitting PUSCH and a second frequency-domain resource for transmitting PUSCH.

[0418] In some embodiments, the first time-domain resource and the second time-domain resource overlap. Alternatively, this can be understood as the first time-domain resource and the second time-domain resource being identical. Or, this can be understood as PRACH and PUSCH being transmitted simultaneously.

[0419] In some embodiments, the first time-domain resource corresponding to the first time-frequency resource overlaps with the second time-domain resource corresponding to the second time-frequency resource, including at least one of the following:

[0420] The first time domain resource and the second time domain resource have the same period;

[0421] The first time domain resources and the second time domain resources occupy the same time slot;

[0422] The first time domain resource and the second time domain resource occupy the same symbol.

[0423] In some embodiments, PRACH is transmitted periodically, meaning the first time-domain resource corresponds to a first transmission period. The device transmits PRACH periodically according to the first transmission period. Similarly, PUSCH is also transmitted periodically, with the second time-domain resource corresponding to a second transmission period. The device transmits PUSCH according to the second transmission period. The first and second transmission periods are the same. It should be understood that "the first and second transmission periods are the same" means that the first and second transmission periods are the same transmission period. That is, PRACH and PUSCH are transmitted periodically according to the same transmission period.

[0424] In some embodiments, the first time-domain resource and the second time-domain resource occupy the same time slot. For example, both the first time-domain resource and the second time-domain resource occupy time slot 1.

[0425] In some embodiments, the first temporal resource and the second temporal resource occupy the same subframe. For example, both the first temporal resource and the second temporal resource occupy subframe 1.

[0426] In some embodiments, the first time-domain resource and the second time-domain resource occupy the same symbol.

[0427] In some embodiments, the first starting time domain position of the first time domain resource and the second starting time domain position of the second time domain resource are the same, and / or, the first ending time domain position of the first time domain resource and the second ending time domain position of the second time domain resource are the same. The first starting time domain position is the starting time domain position of the second time domain resource, and the second starting time domain position is the starting time domain position of the second time domain resource.

[0428] In this embodiment, the example of the first time domain resource and the second time domain resource occupying the same symbol is used for illustration.

[0429] In some embodiments, the first frequency domain resource corresponding to the first time-frequency resource may or may not overlap with the second frequency domain resource corresponding to the second time-frequency resource.

[0430] In some embodiments, the first frequency domain resources and the second frequency domain resources overlap. Alternatively, this can be understood as the first frequency domain resources and the second frequency domain resources being identical.

[0431] In some embodiments, the first frequency domain resource corresponding to the first time-frequency resource overlaps with the second frequency domain resource corresponding to the second time-frequency resource, including at least one of the following:

[0432] The first frequency domain resource and the second frequency domain resource have the same period;

[0433] The first frequency domain resources and the second frequency domain resources occupy the same RB;

[0434] The first frequency domain resources and the second frequency domain resources occupy the same subcarriers;

[0435] The first starting frequency domain position of the first frequency domain resource is the same as the second starting frequency domain position of the second frequency domain resource.

[0436] The first end frequency domain position of the first frequency domain resource is the same as the second end frequency domain position of the second frequency domain resource.

[0437] Wherein, the first starting frequency domain position is the starting frequency domain position of the first frequency domain resource, and the second starting frequency domain position is the starting frequency domain position of the second frequency domain resource.

[0438] In some embodiments, the first frequency domain resource corresponding to the first time-frequency resource may or may not overlap with the second frequency domain resource corresponding to the second time-frequency resource, including:

[0439] The first starting frequency domain position is different from the second starting frequency domain position, and the number of RBs occupied by the first frequency domain resources and the second time domain resources is the same; or, the second starting frequency domain position is different from the first starting frequency domain position, and the number of RBs occupied by the first frequency domain resources and the second time domain resources is different; or, the first starting frequency domain position is the same as the second starting frequency domain position, and the number of RBs occupied by the first frequency domain resources and the second time domain resources is different; or, the first starting frequency domain position is the same as the second starting frequency domain position, and the number of RBs occupied by the first frequency domain resources and the second time domain resources is the same.

[0440] In some embodiments, the first time-frequency resource and the second time-frequency resource are associated in a predefined manner.

[0441] In some embodiments, the first time-frequency resource and the second time-frequency resource are pre-configured by the network device.

[0442] In some embodiments, the network device pre-configures the offset values ​​of the first time-frequency resource and the second time-frequency resource relative to the first time-frequency resource. When the network device pre-configures the first time-frequency resource, the offset value of the second time-frequency resource relative to the first time-frequency resource is used to determine the second time-frequency resource.

[0443] In some embodiments, the first information is used to indicate the SSB associated with PRACH. In some embodiments, the first information is also used to indicate CSI-RS. In some embodiments, the first information is also used to indicate DMRS.

[0444] In some embodiments, the first information includes at least one of the following:

[0445] • SSB index;

[0446] • RSRP obtained based on SSB measurement.

[0447] In some embodiments, the first information may also include RSRQ obtained based on SSB measurements.

[0448] In some embodiments, the first information also includes SINR obtained based on SSB measurements.

[0449] In some embodiments, the SSB in the first information may be a first type SSB, or a second type SSB.

[0450] In some embodiments, the PSS, SSS, and PBCH in the second type SSB are transmitted using a set of different time-frequency resources with relative positions. For example, as shown in FIG3, the PSS, SSS, and PBCH each occupy different resource blocks.

[0451] In some embodiments, at least one of the PSS and SSS in the first type SSB is transmitted using the same time-frequency resources as the PBCH.

[0452] In some embodiments, the structure of the first type SSB includes at least one of the following:

[0453] Structure 1: SSS and PBCH occupy the same time-domain and frequency-domain resources, while PSS occupies separate time-domain resources.

[0454] Structure 2: In the first period, the SSS and PBCH occupy the same time-domain and frequency-domain resources, while the PSS occupies a separate time-domain resource; in the second period, the SSS and the first PBCH occupy a set of the same time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

[0455] Structure 3: The SSS and the first PBCH occupy the same set of time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

[0456] Specifically, each structure is described in detail in the embodiment shown in Figure 6 above.

[0457] In some embodiments, the first information needs to be decoded based on DMRS. The above-described apparatus further includes:

[0458] The receiving module 1720 is used to receive the second configuration corresponding to DMRS.

[0459] In some embodiments, the second configuration includes at least one of the following:

[0460] Overlay transmission of DMRS and first information;

[0461] Do not send DMRS.

[0462] In some embodiments, the PRACH transmitted on the first time-frequency resource carries a random access preamble sequence. Optionally, the preamble sequence carried in the PRACH is a long sequence; or, the preamble sequence carried in the PRACH is a short sequence. In this embodiment, the sequence length of the preamble sequence carried in the PRACH is not limited.

[0463] In some embodiments, different sequence lengths correspond to different AI models. For example, long sequences correspond to the first AI model, and short sequences correspond to the second AI model. The first AI model and the second AI model are different AI models.

[0464] In some embodiments, the long sequence includes one or more sequence formats. Optionally, different long sequences may correspond to the same sequence format. For example, suppose sequence 1 and sequence 2 are both long sequences, and sequence 1 and sequence 2 have the same sequence format. Optionally, different long sequences may correspond to different sequence formats. For example, sequence 1 may correspond to sequence format 1, and sequence 2 may correspond to sequence format 2.

[0465] In some embodiments, the short sequence includes one or more sequence formats. Optionally, different short sequences may correspond to the same sequence format. Optionally, different short sequences may correspond to different sequence formats.

[0466] In some embodiments, different sequence formats correspond to different AI models. For example, sequence format 1 corresponds to the first AI model, and sequence format 2 corresponds to the second AI model. The first AI model and the second AI model are different AI models.

[0467] The receiving module 1720 is also used to receive the first type of SSB.

[0468] In some embodiments, the device receives a first type of SSB based on a first AI receiver. The first AI receiver is pre-deployed in the device.

[0469] In some embodiments, the device receives a first type of SSB and / or a second type of SSB based on a first AI receiver.

[0470] In some embodiments, the first AI receiver includes one or more AI models. Optionally, each AI model is applicable to all SSB types. For example, suppose the first AI receiver includes two AI models: a first AI model and a second AI model. The first AI model is applicable to both first-type and second-type SSBs. The second AI model is also applicable to both first-type and second-type SSBs. Optionally, different AI models are applicable to different SSB types. For example, the first AI model is applicable to first-type SSBs, and the second AI model is applicable to second-type SSBs.

[0471] The receiving module 1720 is also used to receive the first configuration corresponding to the PUSCH. The device sends the PUSCH to the network device based on the received first configuration.

[0472] In some embodiments, the first configuration includes at least one of the following:

[0473] MCS;

[0474] It can transmit pre-coded data;

[0475] Precoding cannot be transmitted;

[0476] Number of ports for PUSCH;

[0477] The frequency domain offset value of the second time-frequency resource relative to the first time-frequency resource;

[0478] The RO associated with the first piece of information;

[0479] The preamble index associated with the first piece of information;

[0480] The preamble index group associated with the first piece of information.

[0481] The transmitting module 1710 is also configured to transmit PRACH on a first time-frequency resource using a first transmitting power, and to transmit PUSCH on a second time-frequency resource using a second transmitting power.

[0482] In some embodiments, the first transmission power is the transmission power of the device for transmitting PRACH. The second transmission power is the transmission power of the device for transmitting PUSCH.

[0483] In some embodiments, the first transmit power and / or the second transmit power are predetermined by the device based on the received transmit power configuration. Alternatively, this can be understood as the device determining the first transmit power and the second transmit power before transmitting PRACH and PUSCH.

[0484] In some embodiments, the transmit power configuration includes at least one of the following:

[0485] First transmission power;

[0486] Second transmission power;

[0487] The first ratio is the ratio of the first transmission power to the second transmission power;

[0488] The second ratio is the ratio of the first transmission power to the third transmission power, where the third transmission power is the maximum transmission power of the device.

[0489] The third ratio is the ratio of the second transmission power to the third transmission power;

[0490] The first power limit is used to determine the first transmission power;

[0491] The second power limit is used to determine the second transmission power;

[0492] The fourth ratio is the ratio of the first power limit to the second power limit.

[0493] The fifth ratio is the ratio of the first power limit to the third transmission power;

[0494] The sixth ratio is the ratio of the second limiting power to the third transmitting power.

[0495] Specifically, the transmission power configuration is detailed in the embodiment shown in step 221 above.

[0496] The receiver module 1720 is also used to receive transmit power configuration.

[0497] In some embodiments, the device may send both PRACH and PUSCH simultaneously in the following ways:

[0498] Scenario 1: PRACH is sent successfully, and PUSCH is sent successfully;

[0499] Scenario 2: PRACH is sent successfully, but PUSCH is not sent successfully;

[0500] Scenario 3: PRACH fails to send, but PUSCH is sent successfully;

[0501] Scenario 4: PRACH fails to be sent, and PUSCH fails to be sent either.

[0502] In scenario one, if both PRACH and PUSCH are successfully sent, it indicates that the network device can accurately receive both PRACH and PUSCH, and can continue the current access procedure until random access is successful. The current access procedure refers to the access procedure that explicitly indicates the first information using the resources occupied by the PUSCH. For example, for a four-step random access procedure, as shown in Figure 12, message 1 (Msg1) includes both the random access preamble and the first information. For a two-step random access procedure, as shown in Figure 13, message A includes: the random access preamble, the first information, and the UE ID.

[0503] In scenario two, if the PRACH is successfully sent but the PUSCH is not, it means the network device has accurately received the PRACH but cannot obtain the beam information, thus the random access failed. In this case, it is necessary to send the PUSCH to the network device again.

[0504] In some embodiments, if PUSCH transmission succeeds but PRACH transmission fails, PRACH is transmitted on the first time-frequency resource using a fourth transmission power. Fourth transmission power = P PRACH,target +PL, P PRACH,target PL is the target transmit power of PRACH, and PL is the path loss.

[0505] In scenario three, if the PRACH transmission fails but the PUSCH transmission succeeds, it means the network device has accurately received the PUSCH but not the random access preamble, thus the random access failed. In this case, it is necessary to send the PRACH to the network device again.

[0506] In some embodiments, if PRACH transmission is successful but PUSCH transmission fails, PUSCH is transmitted on the second time-frequency resource using a fifth transmission power. Fifth transmission power = P PUSCH,target +PL, P PUSCH,target PL is the target transmit power of PUSCH, and PL is the path loss.

[0507] In scenario four, if both PRACH and PUSCH fail to send, it indicates that the network device did not receive the random access preamble or beam information, and random access failed. In this case, step 220 needs to be re-executed, i.e., the PRACH and PUSCH need to be resent to the network device.

[0508] In some embodiments, the above-described apparatus further includes:

[0509] The rollback module 1730 is used to roll back the current access process to the traditional access process when the first condition is met. The traditional access process is an access process that implicitly indicates the first information using the random access resources occupied by PRACH.

[0510] In some embodiments, after sending PRACH and PUSCH, the device determines whether a first condition is met. If the first condition is not met, the current access procedure continues; if the first condition is met, the current access procedure is rolled back to a traditional access procedure. That is, the access procedure shown in FIG12 is rolled back to the access procedure shown in FIG1, or the access procedure shown in FIG13 is rolled back to the access procedure shown in FIG2.

[0511] In some embodiments, the first condition includes at least one of the following:

[0512] The number of failed PRACH transmissions exceeds the threshold for the first transmission.

[0513] The number of failed PUSCH transmissions exceeds the second threshold.

[0514] The first timer timed out.

[0515] In some embodiments, if the number of failed PRACH transmissions exceeds a first-time failure threshold, the current access procedure is rolled back to a traditional access procedure. The first-time failure threshold indicates the maximum number of allowed PRACH transmission failures; for example, a first-time failure threshold of 5 means that a maximum of 5 PRACH transmission failures are allowed. The first-time failure threshold is pre-configured by the network device or pre-defined by the communication protocol.

[0516] In some embodiments, if the number of failed PUSCH transmissions exceeds a second threshold, the current access procedure is rolled back to a traditional access procedure. The second threshold indicates the maximum number of allowed PUSCH transmission failures; for example, a second threshold of 5 means that a maximum of 5 PUSCH transmission failures are allowed. The second threshold is either pre-configured by the network device or pre-defined by the communication protocol.

[0517] In some embodiments, if the first timer times out, the current access procedure is rolled back to a traditional access procedure. The time range of the first timer is shorter than that of the second timer. The first timer and the second timer start at the same time. The first timer and the second timer begin counting when the terminal device initially accesses the network device.

[0518] In some embodiments, the time range of the first timer is pre-configured by the network device, or the time range of the first timer is pre-defined by the communication protocol. The time range of the second timer is pre-configured by the network device, or the time range of the second timer is pre-defined by the communication protocol.

[0519] In some embodiments, when the device initially accesses the network device, a second timer is started. While the second timer is running, the MAC layer initiates a random access procedure. After the device transmits the random access preamble, i.e., after sending message 1 or message A to the network device, the device attempts to detect the RAR. If the RAR is successfully received, the device continues the random access procedure; otherwise, the device increments the maximum number of attempts count. If the maximum number of attempts has not been reached, the device ramps up power and retransmits the random access preamble. If the maximum number of attempts has been reached and the RAR has still not been successfully received, the device reports to a higher layer. If the second timer has not stopped at this point, the higher layer may retry the random access procedure.

[0520] In some embodiments, the first timer and the second timer run simultaneously, and the time range of the first timer is smaller than that of the second timer. Within the timeframe during which the device attempts to access the network device, if it cannot access the network device using the current access procedure, it can promptly switch to the traditional access procedure, avoiding a prolonged network access time for the device.

[0521] Figure 18 shows a structural block diagram of a transmission apparatus for a random access channel provided in an exemplary embodiment of this application. The apparatus includes:

[0522] The receiving module 1810 is used to receive PRACH transmitted on a first time-frequency resource and PUSCH transmitted on a second time-frequency resource. The PUSCH carries first information, and the first time-domain resource corresponding to the first time-frequency resource overlaps with the second time-domain resource corresponding to the second time-frequency resource.

[0523] In some embodiments, the first time-frequency resource is a resource for transmitting PRACH. The first time-frequency resource includes a first time-domain resource for transmitting PRACH and a first frequency-domain resource for transmitting PRACH.

[0524] In some embodiments, the second time-frequency resource is a resource for transmitting PUSCH. The second time-frequency resource includes a second time-domain resource for transmitting PUSCH and a second frequency-domain resource for transmitting PUSCH.

[0525] In some embodiments, the first time-domain resource and the second time-domain resource overlap. Alternatively, this can be understood as the first time-domain resource and the second time-domain resource being identical. Or, this can be understood as PRACH and PUSCH being transmitted simultaneously.

[0526] In some embodiments, the first time-domain resource corresponding to the first time-frequency resource overlaps with the second time-domain resource corresponding to the second time-frequency resource, including at least one of the following:

[0527] The first time domain resource and the second time domain resource have the same period;

[0528] The first time domain resources and the second time domain resources occupy the same time slot;

[0529] The first time domain resource and the second time domain resource use the same symbol.

[0530] In some embodiments, PRACH is transmitted periodically, meaning the first time-domain resource corresponds to a first transmission period. The terminal device transmits PRACH periodically according to the first transmission period. Similarly, PUSCH is also transmitted periodically, with the second time-domain resource corresponding to a second transmission period. The terminal device transmits PUSCH according to the second transmission period. The first and second transmission periods are the same. It should be understood that "the first and second transmission periods are the same" here means that the first and second transmission periods are the same transmission period. That is, PRACH and PUSCH are transmitted periodically according to the same transmission period.

[0531] In some embodiments, the first time-domain resource and the second time-domain resource occupy the same time slot. For example, both the first time-domain resource and the second time-domain resource occupy time slot 1.

[0532] In some embodiments, the first temporal resource and the second temporal resource occupy the same subframe. For example, both the first temporal resource and the second temporal resource occupy subframe 1.

[0533] In some embodiments, the first time-domain resource and the second time-domain resource occupy the same symbol.

[0534] In some embodiments, the first starting time domain position of the first time domain resource and the second starting time domain position of the second time domain resource are the same, and / or, the first ending time domain position of the first time domain resource and the second ending time domain position of the second time domain resource are the same. The first starting time domain position is the starting time domain position of the second time domain resource, and the second starting time domain position is the starting time domain position of the second time domain resource.

[0535] In this embodiment, the example of the first time domain resource and the second time domain resource occupying the same symbol is used for illustration.

[0536] In some embodiments, the first frequency domain resource corresponding to the first time-frequency resource may or may not overlap with the second frequency domain resource corresponding to the second time-frequency resource.

[0537] In some embodiments, the first frequency domain resources and the second frequency domain resources overlap. Alternatively, this can be understood as the first frequency domain resources and the second frequency domain resources being identical.

[0538] In some embodiments, the first frequency domain resource corresponding to the first time-frequency resource overlaps with the second frequency domain resource corresponding to the second time-frequency resource, including at least one of the following:

[0539] The first frequency domain resource and the second frequency domain resource have the same period;

[0540] The first frequency domain resources and the second frequency domain resources occupy the same RB;

[0541] The first frequency domain resources and the second frequency domain resources occupy the same subcarriers;

[0542] The first starting frequency domain position of the first frequency domain resource is the same as the second starting frequency domain position of the second frequency domain resource.

[0543] The first end frequency domain position of the first frequency domain resource is the same as the second end frequency domain position of the second frequency domain resource.

[0544] Wherein, the first starting frequency domain position is the starting frequency domain position of the first frequency domain resource, and the second starting frequency domain position is the starting frequency domain position of the second frequency domain resource.

[0545] In some embodiments, the first frequency domain resource corresponding to the first time-frequency resource may or may not overlap with the second frequency domain resource corresponding to the second time-frequency resource, including:

[0546] The first starting frequency domain position is different from the second starting frequency domain position, and the number of RBs occupied by the first frequency domain resources and the second time domain resources is the same; or, the second starting frequency domain position is different from the first starting frequency domain position, and the number of RBs occupied by the first frequency domain resources and the second time domain resources is different; or, the first starting frequency domain position is the same as the second starting frequency domain position, and the number of RBs occupied by the first frequency domain resources and the second time domain resources is different; or, the first starting frequency domain position is the same as the second starting frequency domain position, and the number of RBs occupied by the first frequency domain resources and the second time domain resources is the same.

[0547] In some embodiments, the first time-frequency resource and the second time-frequency resource are associated in a predefined manner.

[0548] In some embodiments, the first time-frequency resource and the second time-frequency resource are pre-configured by the network device.

[0549] In some embodiments, the network device pre-configures the offset values ​​of the first time-frequency resource and the second time-frequency resource relative to the first time-frequency resource. When the network device pre-configures the first time-frequency resource, the offset value of the second time-frequency resource relative to the first time-frequency resource is used to determine the second time-frequency resource.

[0550] In some embodiments, the first information is used to indicate the SSB associated with PRACH. In some embodiments, the first information is also used to indicate CSI-RS. In some embodiments, the first information is also used to indicate DMRS.

[0551] In some embodiments, the first information includes at least one of the following:

[0552] • SSB index;

[0553] • RSRP obtained based on SSB measurement.

[0554] In some embodiments, the first information may also include RSRQ obtained based on SSB measurements.

[0555] In some embodiments, the first information also includes SINR obtained based on SSB measurements.

[0556] In some embodiments, the SSB in the first information may be a first type SSB, or a second type SSB.

[0557] In some embodiments, the PSS, SSS and PBCH in the second type SSB are transmitted using a set of different time-frequency resources with relative positional relationships.

[0558] In some embodiments, at least one of the PSS and SSS in the first type SSB is transmitted using the same time-frequency resources as the PBCH.

[0559] In some embodiments, the structure of the first type SSB includes at least one of the following:

[0560] Structure 1: SSS and PBCH occupy the same time-domain and frequency-domain resources, while PSS occupies separate time-domain resources.

[0561] Structure 2: In the first period, the SSS and PBCH occupy the same time-domain and frequency-domain resources, while the PSS occupies a separate time-domain resource; in the second period, the SSS and the first PBCH occupy a set of the same time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

[0562] Structure 3: The SSS and the first PBCH occupy the same set of time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

[0563] Specifically, each structure is described in detail in the embodiment shown in Figure 14 above.

[0564] In some embodiments, the first information needs to be decoded based on DMRS. Therefore, the above apparatus further includes:

[0565] The transmitting module 1820 is used to transmit the second configuration corresponding to DMRS.

[0566] In some embodiments, the second configuration includes at least one of the following:

[0567] Overlay transmission of DMRS and first information;

[0568] Do not send DMRS.

[0569] In some embodiments, the PRACH transmitted on the first time-frequency resource carries a random access preamble sequence. Optionally, the preamble sequence carried in the PRACH is a long sequence; or, the preamble sequence carried in the PRACH is a short sequence. In this embodiment, the sequence length of the preamble sequence carried in the PRACH is not limited.

[0570] In some embodiments, different sequence lengths correspond to different AI models. For example, long sequences correspond to the first AI model, and short sequences correspond to the second AI model. The first AI model and the second AI model are different AI models.

[0571] In some embodiments, the long sequence includes one or more sequence formats. Optionally, different long sequences may correspond to the same sequence format. For example, suppose sequence 1 and sequence 2 are both long sequences, and sequence 1 and sequence 2 have the same sequence format. Optionally, different long sequences may correspond to different sequence formats. For example, sequence 1 may correspond to sequence format 1, and sequence 2 may correspond to sequence format 2.

[0572] In some embodiments, the short sequence includes one or more sequence formats. Optionally, different short sequences may correspond to the same sequence format. Optionally, different short sequences may correspond to different sequence formats.

[0573] In some embodiments, different sequence formats correspond to different AI models. For example, sequence format 1 corresponds to the first AI model, and sequence format 2 corresponds to the second AI model. The first AI model and the second AI model are different AI models.

[0574] The sending module 1820 is also used to send the first configuration corresponding to the PUSCH. The terminal device sends the PUSCH to the network device based on the received first configuration.

[0575] In some embodiments, the first configuration includes at least one of the following:

[0576] MCS;

[0577] It can transmit pre-coded data;

[0578] Precoding cannot be transmitted;

[0579] Number of ports for PUSCH;

[0580] The frequency domain offset value of the second time-frequency resource relative to the first time-frequency resource;

[0581] The RO associated with the first piece of information;

[0582] The preamble index associated with the first piece of information;

[0583] The preamble index group associated with the first piece of information.

[0584] The transmitting module 1820 is also used to transmit the first type of SSB.

[0585] In some embodiments, the network device receives PRACH and PUSCH based on a second AI receiver.

[0586] The receiving module 1810 is also used to receive the PRACH transmitted on the first time-frequency resource and the PUSCH transmitted on the second time-frequency resource based on the second AI receiver.

[0587] In some embodiments, the second AI receiver is pre-deployed in the network equipment.

[0588] In some embodiments, the second AI receiver includes one or more AI models. Optionally, each AI model is applicable to both PRACH and PUSCH. For example, suppose the second AI receiver includes two AI models: a first AI model and a second AI model. The first AI model is applicable to both PRACH and PUSCH. The second AI model is also applicable to both PRACH and PUSCH. Optionally, different AI models are applicable to different transmission channels. For example, the first AI model is applicable to PRACH, and the second AI model is applicable to PUSCH.

[0589] In some embodiments, the terminal device needs to determine the corresponding transmission power before sending PRACH and PUSCH. Optionally, this transmission power is determined based on the transmission power configuration sent by the network device.

[0590] The transmitting module 1820 is also used to transmit a transmit power configuration for instructing the terminal device to transmit PRACH and / or PUSCH.

[0591] In some embodiments, the transmit power configuration includes at least one of the following:

[0592] First transmission power;

[0593] Second transmission power;

[0594] The first ratio is the ratio of the first transmission power to the second transmission power;

[0595] The second ratio is the ratio of the first transmission power to the third transmission power, where the third transmission power is the maximum transmission power of the terminal device.

[0596] The third ratio is the ratio of the second transmission power to the third transmission power;

[0597] The first power limit is used to determine the first transmission power;

[0598] The second power limit is used to determine the second transmission power;

[0599] The fourth ratio is the ratio of the first power limit to the second power limit.

[0600] The fifth ratio is the ratio of the first power limit to the third transmission power;

[0601] The sixth ratio is the ratio of the second limiting power to the third transmitting power.

[0602] Specifically, the transmission power configuration is detailed in the embodiment shown in step 720 above.

[0603] Figure 19 shows a structural block diagram of an SSB transmission apparatus provided in an exemplary embodiment of this application. The apparatus includes:

[0604] The receiving module 1910 is used to receive a first type SSB, wherein at least one of the PSS and SSS in the first type SSB is transmitted using the same time-frequency resources as the PBCH.

[0605] In some embodiments, the structure of the first type SSB includes at least one of the following:

[0606] Structure 1: SSS and PBCH occupy the same time-domain and frequency-domain resources, while PSS occupies separate time-domain resources.

[0607] Structure 2: In the first period, the SSS and PBCH occupy the same time-domain and frequency-domain resources, while the PSS occupies a separate time-domain resource; in the second period, the SSS and the first PBCH occupy a set of the same time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

[0608] Structure 3: The SSS and the first PBCH occupy the same set of time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

[0609] Specifically, each structure is described in detail in the embodiment shown in Figure 6 above.

[0610] In some embodiments, the terminal device receives a first type of SSB based on a first AI receiver. The first AI receiver is pre-deployed in the terminal device.

[0611] In some embodiments, the terminal device receives a first type of SSB and / or a second type of SSB based on a first AI receiver.

[0612] In some embodiments, the first AI receiver includes one or more AI models. Optionally, each AI model is applicable to all SSB types. For example, suppose the first AI receiver includes two AI models: a first AI model and a second AI model. The first AI model is applicable to both first-type and second-type SSBs. The second AI model is also applicable to both first-type and second-type SSBs. Optionally, different AI models are applicable to different SSB types. For example, the first AI model is applicable to first-type SSBs, and the second AI model is applicable to second-type SSBs.

[0613] Figure 20 shows a structural block diagram of an SSB transmission apparatus provided in an exemplary embodiment of this application. The apparatus includes:

[0614] The transmitting module 2010 is used to transmit a first type SSB, wherein at least one of the PSS and SSS in the first type SSB is transmitted using the same time-frequency resources as the PBCH.

[0615] In some embodiments, the structure of the first type SSB includes at least one of the following:

[0616] Structure 1: SSS and PBCH occupy the same time-domain and frequency-domain resources, while PSS occupies separate time-domain resources.

[0617] Structure 2: In the first period, the SSS and PBCH occupy the same time-domain and frequency-domain resources, while the PSS occupies a separate time-domain resource; in the second period, the SSS and the first PBCH occupy a set of the same time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

[0618] Structure 3: The SSS and the first PBCH occupy the same set of time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

[0619] Specifically, each structure is described in detail in the embodiment shown in Figure 14 above.

[0620] Figure 21 shows a schematic diagram of the structure of a communication device (terminal device or network device) provided in one embodiment of this application. The communication device may include: a processor 2101, a receiver 2102, a transmitter 2103, a memory 2104, and a bus 2105.

[0621] The processor 2101 includes one or more processing cores. The processor 2101 executes various functional applications and information processing by running software programs and modules.

[0622] The receiver 2102 and the transmitter 2103 can be implemented as a transceiver 2106, which can be a communication chip.

[0623] In this embodiment of the application, the receiver 2102 can be implemented as an AI receiver.

[0624] When the AI ​​receiver is deployed in a terminal device, it is used to receive Type 1 SSBs and / or Type 2 SSBs. Each AI receiver includes one or more AI models. Optionally, each AI model is applicable to all SSB types. Optionally, different AI models are applicable to different SSB types.

[0625] When deployed in a network device, the AI ​​receiver is used to receive PRACH transmitted on a first time-frequency resource and PUSCH transmitted on a second time-frequency resource. Each AI receiver includes one or more AI models. Optionally, each AI model is applicable to both PRACH and PUSCH. Optionally, different AI models are applicable to different transmission channels.

[0626] The memory 2104 is connected to the processor 2101 via the bus 2105. The memory 2104 can be used to store computer programs, and the processor 2101 can be used to execute the computer programs to implement the various steps performed by the terminal device or network device in the above method embodiments.

[0627] Furthermore, memory 2104 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: random-access memory (RAM) and read-only memory (ROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other solid-state storage technologies, compact disc read-only memory (CD-ROM), high-density digital video disc (DVD) or other optical storage, magnetic tape cassette, magnetic tape, disk storage or other magnetic storage devices.

[0628] This application also provides a computer-readable storage medium storing a computer program that is executed by a processor of a terminal device or a network device to implement the various steps in the above-described random access channel transmission method and / or SSB transmission method.

[0629] In some embodiments, the computer-readable storage medium may include ROM, RAM, solid-state drives (SSDs), or optical discs, etc. Random access memory may include resistive random access memory (ReRAM) and dynamic random access memory (DRAM).

[0630] This application also provides a chip, which includes programmable logic circuits and / or program instructions. When the chip is running on a terminal or network device, it is used to implement the various steps in the above-described random access channel transmission method and / or SSB transmission method.

[0631] This application also provides a computer program product or computer program, which includes computer instructions stored in a computer-readable storage medium. The processor of a terminal device or network device reads and executes the computer instructions from the computer-readable storage medium to implement the various steps in the above-described random access channel transmission method and / or SSB transmission method.

[0632] Those skilled in the art will recognize that the functions described in the embodiments of this application in one or more of the above examples can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any medium that facilitates the transfer of a computer program from one place to another. Storage media can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0633] The above are merely exemplary embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims

1. A transmission method for a random access channel, characterized in that, The method is executed by a terminal device, and the method includes: The Physical Random Access Channel (PRACH) is transmitted on a first time-frequency resource, and the Physical Uplink Shared Channel (PUSCH) is transmitted on a second time-frequency resource, wherein the PUSCH carries first information. The first time-domain resource corresponding to the first time-frequency resource overlaps with the second time-domain resource corresponding to the second time-frequency resource.

2. The method according to claim 1, characterized in that, The first time-domain resource corresponding to the first time-frequency resource overlaps with the second time-domain resource corresponding to the second time-frequency resource, including at least one of the following: The first time-domain resource and the second time-domain resource have the same period; The first time-domain resource and the second time-domain resource occupy the same time slot; The first time-domain resource and the second time-domain resource occupy the same symbol.

3. The method according to claim 1 or 2, characterized in that, The first frequency domain resource corresponding to the first time-frequency resource may or may not overlap with the second frequency domain resource corresponding to the second time-frequency resource.

4. The method according to claim 3, characterized in that, The first frequency domain resource corresponding to the first time-frequency resource overlaps or does not overlap with the second frequency domain resource corresponding to the second time-frequency resource, including: The first starting frequency domain position is different from the second starting frequency domain position, and the first frequency domain resource and the second time domain resource occupy the same number of resource blocks (RB); or, The first starting frequency domain position is different from the second starting frequency domain position, and the number of RBs occupied by the first frequency domain resources and the second time domain resources is different; or, The first starting frequency domain position is the same as the second starting frequency domain position, but the number of RBs occupied by the first frequency domain resources and the second time domain resources are different; or, The first starting frequency domain position is the same as the second starting frequency domain position, and the first frequency domain resource and the second time domain resource occupy the same number of RBs; Wherein, the first starting frequency domain position is the starting frequency domain position of the first frequency domain resource, and the second starting frequency domain position is the starting frequency domain position of the second frequency domain resource.

5. The method according to any one of claims 1 to 4, characterized in that, The first information is used to indicate the synchronization signal block SSB associated with the PRACH; The first information includes at least one of the following: The index of the SSB; The reference signal received power RSRP is obtained based on the SSB measurement.

6. The method according to claim 5, characterized in that, The SSB is either a first type of SSB or a second type of SSB. In the first type of SSB, at least one of the primary synchronization signal PSS and the secondary synchronization signal SSS is transmitted using the same time-frequency resources as the broadcast channel PBCH. In the second type of SSB, PSS, SSS and PBCH are transmitted using a set of different time-frequency resources with relative positional relationships.

7. The method according to claim 6, characterized in that, The method further includes: receiving the first type of SSB.

8. The method according to claim 7, characterized in that, Receiving the first type of SSB includes: The first type of SSB is received based on the first artificial intelligence (AI) receiver.

9. The method according to claim 8, characterized in that, The first AI receiver includes one or more AI models.

10. The method according to any one of claims 6 to 9, characterized in that, The structure of the first type of SSB includes: The SSS and the PBCH occupy the same time-domain and frequency-domain resources, while the PSS occupies separate time-domain resources.

11. The method according to any one of claims 6 to 9, characterized in that, The structure of the first type of SSB includes: During the first period, the SSS and the PBCH occupy the same time-domain and frequency-domain resources, while the PSS occupies a separate time-domain resource; during the second period, the SSS and the first PBCH occupy a set of the same time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

12. The method according to any one of claims 6 to 9, characterized in that, The structure of the first type of SSB includes: The SSS and the first PBCH occupy the same set of time-domain and frequency-domain resources, and the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

13. The method according to any one of claims 6 to 12, characterized in that, The transmission of the Physical Random Access Channel (PRACH) on the first time-frequency resource and the transmission of the Physical Uplink Shared Channel (PUSCH) on the second time-frequency resource include: Upon receiving the first type of SSB, the PRACH is transmitted on the first time-frequency resource, and the PUSCH is transmitted on the second time-frequency resource.

14. The method according to any one of claims 1 to 13, characterized in that, The transmission of the Physical Random Access Channel (PRACH) on the first time-frequency resource and the transmission of the Physical Uplink Shared Channel (PUSCH) on the second time-frequency resource include: The PRACH is transmitted on the first time-frequency resource using a first transmission power, and the PUSCH is transmitted on the second time-frequency resource using a second transmission power.

15. The method according to claim 14, characterized in that, The method further includes: receiving transmit power configuration; The transmission power configuration includes at least one of the following: The first transmission power; The second transmission power; The first ratio is the ratio of the first transmission power to the second transmission power; The second ratio is the ratio of the first transmission power to the third transmission power, where the third transmission power is the maximum transmission power of the terminal device. The third ratio is the ratio of the second transmission power to the third transmission power; A first limiting power, wherein the first limiting power is used to determine the first transmission power; The second limiting power is used to determine the second transmission power; The fourth ratio is the ratio of the first limiting power to the second limiting power; The fifth ratio is the ratio of the first limiting power to the third transmitting power; The sixth ratio is the ratio of the second limiting power to the third transmitting power.

16. The method according to any one of claims 1 to 15, characterized in that, The method further includes: If the PUSCH transmission is successful but the PRACH transmission fails, the PRACH is transmitted on the first time-frequency resource using a fourth transmission power; or, If the PRACH transmission is successful but the PUSCH transmission fails, the PUSCH is transmitted on the second time-frequency resource using the fifth transmission power.

17. The method according to any one of claims 1 to 16, characterized in that, The method further includes: If the first condition is met, the current access procedure will be rolled back to the traditional access procedure, which is an access procedure that implicitly indicates the first information using the random access resources occupied by the PRACH.

18. The method according to claim 17, characterized in that, The first condition includes at least one of the following: The number of failed attempts to send the PRACH exceeds the threshold for the first attempt; The number of failed attempts to send the PUSCH exceeds the second threshold. The first timer times out, and the time range of the first timer is shorter than that of the second timer.

19. The method according to any one of claims 1 to 18, characterized in that, The preamble sequence carried in the PRACH is a long sequence; or, the preamble sequence carried in the PRACH is a short sequence. The long sequence includes one or more sequence formats, and the short sequence includes one or more sequence formats.

20. The method according to claim 19, characterized in that, Different sequence lengths correspond to different AI models; or, different sequence formats correspond to different AI models.

21. The method according to any one of claims 1 to 20, characterized in that, The method further includes: receiving the first configuration corresponding to the PUSCH.

22. The method according to claim 21, characterized in that, The first configuration includes at least one of the following: Modulation and coding strategy (MCS); It can transmit pre-coded data; Precoding cannot be transmitted; The number of ports of the PUSCH; The frequency domain offset value of the second time-frequency resource relative to the first time-frequency resource; The random access timing (RO) associated with the first information; The preamble index associated with the first information; The preamble index group associated with the first information.

23. The method according to any one of claims 1 to 22, characterized in that, The method further includes receiving a second configuration corresponding to the demodulation reference signal DMRS.

24. The method according to claim 23, characterized in that, The second configuration includes at least one of the following: The DMRS and the first information are transmitted in an overlapping manner. The DMRS is not sent.

25. The method according to any one of claims 1 to 24, characterized in that, The method is applicable to four-step random access and / or two-step random access.

26. A transmission method for a random access channel, characterized in that, The method is performed by a network device, and the method includes: Receive PRACH transmitted on a first time-frequency resource and PUSCH transmitted on a second time-frequency resource, wherein the PUSCH carries first information; The first time-domain resource corresponding to the first time-frequency resource overlaps with the second time-domain resource corresponding to the second time-frequency resource.

27. The method according to claim 26, characterized in that, The first time-domain resource corresponding to the first time-frequency resource overlaps with the second time-domain resource corresponding to the second time-frequency resource, including at least one of the following: The first time-domain resource and the second time-domain resource have the same period; The first time-domain resource and the second time-domain resource occupy the same time slot; The first time-domain resource and the second time-domain resource occupy the same symbol.

28. The method according to claim 26 or 27, characterized in that, The first frequency domain resource corresponding to the first time-frequency resource may or may not overlap with the second frequency domain resource corresponding to the second time-frequency resource.

29. The method according to claim 28, characterized in that, The first frequency domain resource corresponding to the first time-frequency resource overlaps or does not overlap with the second frequency domain resource corresponding to the second time-frequency resource, including: The first starting frequency domain position is different from the second starting frequency domain position, and the first frequency domain resource and the second time domain resource occupy the same number of RBs; or, The first starting frequency domain position is different from the second starting frequency domain position, and the number of RBs occupied by the first frequency domain resources and the second time domain resources is different; or, The first starting frequency domain position is the same as the second starting frequency domain position, but the number of RBs occupied by the first frequency domain resources and the second time domain resources are different; or, The first starting frequency domain position is the same as the second starting frequency domain position, and the first frequency domain resource and the second time domain resource occupy the same number of RBs; Wherein, the first starting frequency domain position is the starting frequency domain position of the first frequency domain resource, and the second starting frequency domain position is the starting frequency domain position of the second frequency domain resource.

30. The method according to any one of claims 26 to 29, characterized in that, The receiving of PRACH transmitted on the first time-frequency resource and PUSCH transmitted on the second time-frequency resource includes: The second AI receiver receives the PRACH transmitted on the first time-frequency resource and the PUSCH transmitted on the second time-frequency resource.

31. The method according to claim 30, characterized in that, The second AI receiver includes one or more AI models.

32. The method according to any one of claims 26 to 31, characterized in that, The first information is used to indicate the SSB associated with the PRACH; The first information includes at least one of the following: The index of the SSB; RSRP is obtained based on the SSB measurement.

33. The method according to claim 32, characterized in that, The SSB is either a first type of SSB or a second type of SSB. In the first type of SSB, at least one of the PSS and SSS occupies the same time-frequency resources as the PBCH for transmission, while in the second type of SSB, the PSS, SSS occupies a set of different time-frequency resources with a relative positional relationship with the PBCH for transmission.

34. The method according to claim 33, characterized in that, The method further includes: sending the first type of SSB.

35. The method according to claim 33 or 34, characterized in that, The structure of the first type of SSB includes: The SSS and the PBCH occupy the same time-domain and frequency-domain resources, while the PSS occupies separate time-domain resources.

36. The method according to claim 33 or 34, characterized in that, The structure of the first type of SSB includes: During the first period, the SSS and the PBCH occupy the same time-domain and frequency-domain resources, while the PSS occupies a separate time-domain resource; during the second period, the SSS and the first PBCH occupy a set of the same time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

37. The method according to claim 33 or 34, characterized in that, The structure of the first type of SSB includes: The SSS and the first PBCH occupy the same set of time-domain and frequency-domain resources, and the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

38. The method according to any one of claims 26 to 37, characterized in that, The method further includes: sending a transmit power configuration for instructing the terminal device to send the PRACH and / or send the PUSCH; The transmission power configuration includes at least one of the following: The first transmission power is the transmission power of the terminal device transmitting the PUSCH on the first time-frequency resource; The second transmission power is the transmission power of the terminal device when transmitting the PRACH on the second time-frequency resource; The first ratio is the ratio of the first transmission power to the second transmission power; The second ratio is the ratio of the first transmission power to the third transmission power, where the third transmission power is the maximum transmission power of the terminal device. The third ratio is the ratio of the second transmission power to the third transmission power; A first limiting power, wherein the first limiting power is used to determine the first transmission power; The second limiting power is used to determine the second transmission power; The fourth ratio is the ratio of the first limiting power to the second limiting power; The fifth ratio is the ratio of the first limiting power to the third transmitting power; The sixth ratio is the ratio of the second limiting power to the third transmitting power.

39. The method according to any one of claims 26 to 38, characterized in that, The preamble sequence carried in the PRACH is a long sequence; or, the preamble sequence carried in the PRACH is a short sequence. The long sequence includes one or more sequence formats, and the short sequence includes one or more sequence formats.

40. The method according to claim 39, characterized in that, Different sequence lengths correspond to different AI models; or, different sequence formats correspond to different AI models.

41. The method according to any one of claims 26 to 40, characterized in that, The method further includes: sending the first configuration corresponding to the PUSCH.

42. The method according to claim 41, characterized in that, The first configuration includes at least one of the following: MCS; It can transmit pre-coded data; Precoding cannot be transmitted; The number of ports of the PUSCH; The frequency domain offset value of the second time-frequency resource relative to the first time-frequency resource; The RO associated with the first information; The preamble index associated with the first information; The preamble index group associated with the first information.

43. The method according to any one of claims 26 to 42, characterized in that, The method further includes sending the second configuration corresponding to DMRS.

44. The method according to claim 43, characterized in that, The second configuration includes at least one of the following: The DMRS and the first information are transmitted in an overlapping manner. The DMRS is not sent.

45. The method according to any one of claims 1 to 24, characterized in that, The method is applicable to four-step random access and / or two-step random access.

46. ​​A method for transmitting an SSB, characterized in that, The method is executed by a terminal device, and the method includes: Receive a first type SSB, wherein at least one of the PSS and SSS in the first type SSB is transmitted using the same time-frequency resources as the PBCH.

47. The method according to claim 46, characterized in that, The receiving of the first type of SSB includes: The first type of SSB is received based on the first AI receiver.

48. The method according to claim 47, characterized in that, The first AI receiver includes one or more AI models.

49. The method according to any one of claims 46 to 48, characterized in that, The structure of the first type of SSB includes: The SSS and the PBCH occupy the same time-domain and frequency-domain resources, while the PSS occupies separate time-domain resources.

50. The method according to any one of claims 46 to 48, characterized in that, The structure of the first type of SSB includes: During the first period, the SSS and the PBCH occupy the same time-domain and frequency-domain resources, while the PSS occupies a separate time-domain resource; during the second period, the SSS and the first PBCH occupy a set of the same time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

51. The method according to any one of claims 46 to 48, characterized in that, The structure of the first type of SSB includes: The SSS and the first PBCH occupy the same set of time-domain and frequency-domain resources, and the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

52. A method for transmitting an SSB, characterized in that, The method is performed by a network device, and the method includes: Send a first type of SSB, wherein at least one of the PSS and SSS in the first type of SSB is sent using the same time-frequency resources as the PBCH.

53. The method according to claim 52, characterized in that, The structure of the first type of SSB includes: The SSS and the PBCH occupy the same time-domain and frequency-domain resources, while the PSS occupies separate time-domain resources.

54. The method according to claim 52, characterized in that, The structure of the first type of SSB includes: During the first period, the SSS and the PBCH occupy the same time-domain and frequency-domain resources, while the PSS occupies a separate time-domain resource; during the second period, the SSS and the first PBCH occupy a set of the same time-domain and frequency-domain resources, while the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

55. The method according to claim 52, characterized in that, The structure of the first type of SSB includes: The SSS and the first PBCH occupy the same set of time-domain and frequency-domain resources, and the PSS and the second PBCH occupy another set of the same time-domain and frequency-domain resources.

56. A transmission apparatus for a random access channel, characterized in that, The device includes: The transmitting module is used to transmit PRACH on a first time-frequency resource and to transmit PUSCH on a second time-frequency resource, wherein the PUSCH carries first information. The first time-domain resource corresponding to the first time-frequency resource overlaps with the second time-domain resource corresponding to the second time-frequency resource.

57. A transmission apparatus for a random access channel, characterized in that, The device includes: A receiving module is configured to receive a PRACH transmitted on a first time-frequency resource and a PUSCH transmitted on a second time-frequency resource, wherein the PUSCH carries first information. The first time-domain resource corresponding to the first time-frequency resource overlaps with the second time-domain resource corresponding to the second time-frequency resource.

58. A transmission device for SSB, characterized in that, The device includes: A receiving module is configured to receive a first type of SSB, wherein at least one of the PSS and SSS in the first type of SSB is transmitted using the same time-frequency resources as the PBCH.

59. A transmission device for SSB, characterized in that, The device includes: A transmitting module is used to transmit a first type of SSB, wherein at least one of the PSS and SSS in the first type of SSB is transmitted using the same time-frequency resources as the PBCH.

60. A terminal device, characterized in that, The terminal device includes a transceiver; wherein: The transceiver is configured to transmit PRACH on a first time-frequency resource and PUSCH on a second time-frequency resource, wherein the PUSCH carries first information. The first time-domain resource corresponding to the first time-frequency resource overlaps with the second time-domain resource corresponding to the second time-frequency resource.

61. A network device, characterized in that, The network device includes a transceiver; wherein: The transceiver is configured to receive a PRACH transmitted on a first time-frequency resource and a PUSCH transmitted on a second time-frequency resource, wherein the PUSCH carries first information. The first time-domain resource corresponding to the first time-frequency resource overlaps with the second time-domain resource corresponding to the second time-frequency resource.

62. A terminal device, characterized in that, The terminal device includes a transceiver; wherein: The transceiver is configured to receive a first type of SSB, wherein at least one of the PSS and SSS in the first type of SSB is transmitted using the same time-frequency resources as the PBCH.

63. A network device, characterized in that, The network device includes a transceiver; wherein: The transceiver is configured to transmit a first type of SSB, wherein at least one of the PSS and SSS in the first type of SSB is transmitted using the same time-frequency resources as the PBCH.

64. A computer-readable storage medium, characterized in that, The storage medium stores a computer program that is executed by a processor to implement the random access channel transmission method according to any one of claims 1 to 45 and / or the SSB transmission method according to any one of claims 46 to 55.

65. A chip, characterized in that, The chip includes programmable logic circuits and / or program instructions. When the chip is running on a terminal device or network device, it is used to implement the random access channel transmission method according to any one of claims 1 to 45 and / or the SSB transmission method according to any one of claims 46 to 55.

66. A computer program product, characterized in that, The computer program product includes computer instructions stored in a computer-readable storage medium; the processor of the communication device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the communication device to implement the transmission method of the random access channel according to any one of claims 1 to 45 and / or the transmission method of the SSB according to any one of claims 46 to 55.

67. A computer program, characterized in that, The computer program is executed by the processor of the communication device to implement the random access channel transmission method according to any one of claims 1 to 45 and / or the SSB transmission method according to any one of claims 46 to 55.

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