Information transmission method, terminal device, and network device

Abstract

The present application relates to an information transmission method, a terminal device, a network device, a chip, a computer-readable storage medium, a computer program product, a computer program, and a communication system. The method comprises: a terminal device sending first access information to a network device on the basis of a first transmission scheme, wherein the first transmission scheme comprises controlling the power of the first access information on the basis of a RACH format used by or associated with the first access information. Embodiments of the present application enable flexible transmission of first access information, which helps to increase the success rate of random access.

Description

Information transmission methods, terminal equipment and network equipment Technical Field

[0001] This application relates to the field of communications, and more specifically, to an information transmission method, terminal equipment, network equipment, chip, computer-readable storage medium, computer program product, computer program, and communication system. Background Technology

[0002] In the random access process of 5G systems, the preamble transmitted by the User Equipment (UE) is used to identify the UE during random access. If the UE fails to transmit the preamble (Msg1), it will attempt to retransmit the preamble in subsequent transmissions. With the improvement of network equipment receiving capabilities (e.g., the deployment of advanced receivers such as AI receivers) and the introduction of more flexible random access schemes, it is necessary to consider how to optimize the transmission of access information.

[0003] Summary of the Invention

[0004] This application provides an information transmission method that can flexibly transmit access information and improve the access success rate.

[0005] This application provides an information transmission method, including:

[0006] The terminal device sends first access information to the network device based on a first transmission method; wherein, the first transmission method includes controlling the power of the first access information based on the Random Access Channel (RACH) format used or associated with the first access information.

[0007] This application provides an information transmission method, including:

[0008] The network device receives first access information sent by the terminal device based on a first transmission method; wherein the first transmission method includes controlling the power of the first access information based on the RACH format used or associated with the first access information.

[0009] This application provides a terminal device, including:

[0010] A first communication module is used to send first access information to a network device based on a first transmission method; wherein the first transmission method includes controlling the power of the first access information based on the RACH format used or associated with the first access information.

[0011] This application provides a network device, including:

[0012] The second communication module is used to receive first access information sent by the terminal device based on a first transmission method; wherein the first transmission method includes controlling the power of the first access information based on the RACH format used or associated with the first access information.

[0013] This application provides a terminal device, including a transceiver, a processor, and a memory. The memory stores a computer program, the transceiver communicates with other devices, and the processor calls and runs the computer program stored in the memory to enable the terminal device to perform the aforementioned information transmission method.

[0014] This application provides a network device, including a transceiver, a processor, and a memory. The memory stores a computer program, the transceiver communicates with other devices, and the processor calls and runs the computer program stored in the memory to enable the network device to perform the aforementioned information transmission method.

[0015] This application provides a chip for implementing the above-described information transmission method.

[0016] Specifically, the chip includes a processor for retrieving and running a computer program from memory, causing a device equipped with the chip to perform the aforementioned information transmission method.

[0017] This application provides a computer-readable storage medium for storing a computer program, which, when run by a device, causes the device to perform the aforementioned information transmission method.

[0018] This application provides a computer program product, including computer program instructions that cause a computer to execute the above-described information transmission method.

[0019] This application provides a computer program that, when run on a computer, causes the computer to perform the information transmission method described above.

[0020] According to an embodiment of this application, a terminal device transmits first access information based on a first transmission method. Specifically, the first transmission method includes controlling the power of the first access information based on the RACH format used or associated with it. In this way, the terminal device can select or switch the RACH format to adapt to transmission / reception requirements. Furthermore, by understanding the relationship between the RACH format and power, the terminal device can transmit the first access information more flexibly, which is beneficial for improving the success rate of random access. Attached Figure Description

[0021] Figure 1 is a schematic diagram of an application scenario according to an embodiment of this application.

[0022] Figure 2 is a schematic diagram of the four-step RACH process in a 5G system.

[0023] Figure 3 is a schematic diagram of the preamble retransmission scheme in a 5G system.

[0024] Figure 4 is a schematic flowchart of an information transmission method according to an embodiment of this application.

[0025] Figure 5 is a schematic flowchart of an information transmission method according to another embodiment of this application.

[0026] Figure 6 is a schematic block diagram of a terminal device according to an embodiment of this application.

[0027] Figure 7 is a schematic block diagram of a network device according to an embodiment of this application.

[0028] Figure 8 is a schematic block diagram of a communication device according to an embodiment of this application.

[0029] Figure 9 is a schematic block diagram of a chip according to an embodiment of this application.

[0030] Figure 10 is a schematic block diagram of a communication system according to an embodiment of this application. Detailed Implementation

[0031] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0032] The technical solutions of this application embodiment can be applied to various communication systems, such as: Long Term Evolution (LTE) systems, Advanced Long Term Evolution (LTE-A) systems, New Radio (NR) systems, evolution systems of NR systems, LTE-based access to unlicensed spectrum (LTE-U) systems, NR-based access to unlicensed spectrum (NR-U) systems, Non-Terrestrial Networks (NTN) systems, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), 5G systems, 6th-Generation (6G) systems, or other communication systems.

[0033] Traditional communication systems typically support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication but also, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, or vehicle-to-everything (V2X) communication. The embodiments of this application can also be applied to these communication systems.

[0034] In one implementation, the communication system in this application embodiment can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) network deployment scenario.

[0035] In one embodiment, the communication system in this application can be applied to unlicensed spectrum, wherein the unlicensed spectrum can also be considered as shared spectrum; or, the communication system in this application can also be applied to licensed spectrum, wherein the licensed spectrum can also be considered as non-shared spectrum.

[0036] This application describes various embodiments in conjunction with network devices and terminal devices. The terminal device may 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 device, etc.

[0037] Terminal devices can be stations (STAs) in WLANs, cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistant (PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to a wireless modem, in-vehicle devices, wearable devices, terminal devices in next-generation communication systems such as NR networks, or terminal devices in future evolved Public Land Mobile Network (PLMN) networks, etc.

[0038] In the embodiments of this application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships); and it can also be deployed in the air (such as airplanes, balloons and satellites).

[0039] In the embodiments of this application, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical care, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0040] By way of example and not limitation, in this embodiment, the terminal device can also be a wearable device. Wearable devices, also known as wearable smart devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not merely hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are feature-rich, large in size, and can achieve complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses, as well as those that focus on a specific type of application function and require the use of other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0041] In the embodiments of this application, the network device can be a device for communicating with mobile devices, such as an access point (AP) in a WLAN, an evolved Node B (eNB or eNodeB) in LTE, a relay station or access point, or a vehicle-mounted device, a wearable device, a network device (gNB) in an NR network, or a network device in a future evolved PLMN network or an NTN network, etc.

[0042] By way of example and not limitation, in this embodiment, the network device may have mobility characteristics; for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low Earth orbit (LEO) satellite, a medium Earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station located on land, water, or other similar locations.

[0043] In this embodiment, the network device can provide services to a cell. The terminal device communicates with the network device through the transmission resources (e.g., frequency domain resources, or spectrum resources) used by the cell. The cell can be the cell corresponding to the network device (e.g., a base station). The cell can belong to a macro base station or to a base station corresponding to a small cell. The small cell can include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-speed data transmission services.

[0044] Figure 1 illustrates an exemplary communication system 100. The communication system includes a network device 110 and two terminal devices 120. In one embodiment, the communication system 100 may include multiple network devices 110, and the coverage area of ​​each network device 110 may include other numbers of terminal devices 120; this embodiment does not limit the scope of the application.

[0045] It should be understood that devices with communication functions in the network / system of this application embodiment can be referred to as communication devices. Taking the communication system shown in Figure 1 as an example, the communication device may include network devices and terminal devices with communication functions. The network devices and terminal devices can be specific devices in this application embodiment, which will not be described in detail here. The communication device may also include other devices in the communication system, such as network controllers, mobility management entities, and other network entities. This application embodiment does not limit this.

[0046] It should be understood that the terms "system" and "network" are often used interchangeably in this document. The term "and / or" in this document merely describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Furthermore, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0047] It should be understood that the term "instruction" mentioned in the embodiments of this application can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0048] In the description of the embodiments of this application, the term "correspondence" may indicate that there is a direct or indirect correspondence between two things, or that there is an association between two things, or that there is a relationship of instruction and being instructed, configuration and being configured, etc.

[0049] To facilitate understanding of the technical solutions of the embodiments of this application, the relevant technologies of the embodiments of this application are described below. The following relevant technologies are optional solutions and can be combined with the technical solutions of the embodiments of this application in any way, and they all fall within the protection scope of the embodiments of this application.

[0050] In 5G systems, the random access procedure adopts a four-step process similar to LTE. Figure 2 is a schematic diagram of the four-step RACH process in a 5G system. As shown in Figure 2, the four-step RACH process includes:

[0051] The first step is for the UE to send Msg1 (message 1), which is the random access preamble or preamble code, to the base station (e.g., gNB).

[0052] The second step is that after the base station detects that a UE has sent an access preamble, it sends a random access response (RAR) to the UE, which is to transmit Msg2 (message 2) to inform the UE of the uplink resource information that it can use when sending Msg3 (message 3), such as the Physical Uplink Shared Channel (PUSCH), and to allocate a temporary RNTI (Radio Network Temporary Identity) to the UE, and to provide the UE with a time advance command, etc.

[0053] The third step is that after the UE receives the RAR, it sends a Msg3 message in the uplink resources specified by the RAR, which carries a UE-specific temporary identifier.

[0054] In the fourth step, the base station sends a Msg4 message to the UE, which includes a contention resolution message, and simultaneously allocates uplink transmission resources to the UE. When the UE receives the Msg4 message from the base station, it checks whether the UE-specific temporary identifier sent by the UE in Msg3 is included in the contention resolution message sent by the base station. If it is included, it indicates that the UE's random access procedure was successful; otherwise, it is considered that the random access procedure failed, and the UE needs to start the random access procedure again from the first step.

[0055] For the transmission of the preamble (Msg1), if the UE transmission fails, it will attempt to retransmit the preamble in subsequent transmissions. Figure 3 is a schematic diagram of the preamble retransmission scheme in a 5G system. As shown in Figure 3, the retransmission of Msg1 takes into account the impact of changing the transmission beam and changing the transmission power, and the protocol constraints that Msg1 retransmission must comply with are constrained in the protocol. For example, if the UE changes the beam in the Msg1 retransmission (randomly accessing the corresponding SSB (Synchronization Signal Block) or CSI-RS (Channel State Information-Reference Signal)), then no power ramping is performed (the value of the power ramping counter remains unchanged), and the original power is maintained for Msg1 retransmission; if the UE does not change the beam in the Msg1 retransmission, then power ramping continues.

[0056] Considering the improved reception capabilities of network and other equipment in 6G and subsequent wireless communication systems (such as the deployment of advanced receivers like AI receivers) and the more flexible, scenario-adaptive random access requirements (such as the introduction and selection of on-demand, flexible preamble formats and RACH formats), new designs are needed for preamble retransmission constraints and retransmission rules during random access.

[0057] For 4G, the retransmission of the preamble (msg1) mainly takes into account the power control constraints, that is, the constraints related to power ramping in the preamble transmission.

[0058] For 5G, due to the introduction of beamforming in 5G systems, a new dimension, beam switching, is considered in the design of preamble retransmission. When retransmitting preamble, two different factors need to be considered regarding the impact of Msg1 reception failure: insufficient power and incorrect beam direction. Accordingly, a preamble retransmission design mechanism that considers the effects of power ramping and beam switching is introduced.

[0059] For random access, in subsequent wireless communication system design, considering the introduction of more flexible random access schemes, random access formats, and resource design, it is necessary to design corresponding transmission rules when considering preamble transmission, especially retransmission design after initial transmission failure, to constrain the relationship between the selected random access method, associated beam, and transmission power.

[0060] Figure 4 is a schematic flowchart of an information transmission method performed by a terminal device according to an embodiment of this application. This method can optionally be applied to the system shown in Figure 1, but is not limited thereto. The method includes at least a portion of the following:

[0061] S410. The terminal device sends first access information to the network device based on a first transmission method; wherein, the first transmission method includes controlling the power of the first access information based on the RACH format used or associated with the first access information.

[0062] Corresponding to the above method, FIG5 is a schematic flowchart of an information transmission method performed by a network device according to another embodiment of the present application. The method includes:

[0063] S510, The network device receives first access information sent by the terminal device based on a first transmission method; wherein, the first transmission method includes controlling the power of the first access information based on the RACH format used or associated with the first access information.

[0064] In this embodiment, the first access information is used to access the aforementioned network device. Optionally, the first access information may include any information transmitted by the terminal device to the network device during the random access process. For example, the first access information may include one or more types of information such as preambles, data, and reference signals during the random access process.

[0065] Optionally, the first access information may use or be associated with one or more RACH formats; in other words, the terminal device may transmit the first access information based on one or more RACH formats. For example, the terminal device may use a RACH format configured by the network device to initially transmit and retransmit the first access information. Another example is that the terminal device may use a first RACH format to initially transmit the first access information and a second RACH format to retransmit the first access information.

[0066] In practical applications, different RACH formats can be suitable for different transmission / reception requirements. For example, transmission / reception requirements can be related to receiver configuration (e.g., whether an AI receiver is used), scenario, channel quality, network device status, etc. Terminal devices can select / switch the RACH format used or associated with the first access information to match different transmission / reception requirements.

[0067] According to the information transmission method of this application embodiment, a terminal device sends first access information based on a first transmission mode. The first transmission mode specifically includes controlling the power of the first access information based on the RACH format used or associated with it. In this way, the terminal device can select or switch the RACH format to adapt to transmission / reception requirements. Furthermore, by understanding the relationship between the RACH format and power, the transmission of the first access information can be performed more flexibly, which is beneficial for improving the success rate and efficiency of random access.

[0068] In some embodiments, the first access information includes a preamble. Optionally, the above method can be applied to the retransmission of the preamble, for example, after the initial transmission of the preamble fails, controlling the power during the retransmission of the preamble based on the RACH format used or associated with the preamble.

[0069] For example, the first access information includes Msg1 (preamble) in four-step random access or MsgA in two-step random access.

[0070] In some embodiments, the first access information may also include data or reference signals, etc.

[0071] For example, the first access information includes MsgA in two-step random access, MsgA's PDCCH (Physical Downlink Control Channel), MsgA's PDSCH (Physical Downlink Shared Channel), or MsgA's Demodulation Reference Signal (DMRS).

[0072] In some embodiments, the first transmission method includes controlling the power of the first access information based on whether the RACH format has changed.

[0073] Optionally, the power of controlling the first access information mentioned above can be the power of controlling the first access information when the RACH format changes or remains unchanged, or it can be the power of controlling the next transmission of the first access information after the RACH format changes or remains unchanged.

[0074] For example, the terminal device can use a first RACH format to transmit the first access information for the i-th time. If the transmission fails, it can use the first RACH format to transmit the first access information for the (i+1)-th time (with the RACH format unchanged), or use a second RACH format to transmit the first access information for the (i+1)-th time (with the RACH format changing), in order to attempt to adapt to the transmission / reception requirements and improve the access success rate. The terminal device can determine the power used for the (i+1)-th transmission of the first access information or the power used for the (i+2)-th transmission of the first access information based on whether the RACH format has changed.

[0075] For example, if the terminal device decides to use the second RACH format to transmit the first access information for the (i+1)th time (the RACH format changes), then in this retransmission, the terminal device can keep the power of the first access information unchanged. As another example, if the terminal device uses the second RACH format to transmit the first access information for the (i+1)th time (the RACH format changes), then the terminal device's power can be adjusted / changed during the (i+2)th retransmission.

[0076] The selection / switching of the RACH format involved in the first access information transmission can address the problem that the RACH format does not meet the current access information transmission / reception requirements; the power control involved in the first access information transmission can address the problem of insufficient power. By controlling the power of the first access information based on whether the RACH format has changed (whether it has been switched), various reasons for the failure of the first access information transmission can be addressed more flexibly, thereby improving the success rate of random access. For example, if the network side deploys an AI receiver that supports a RACH format that occupies fewer resources (e.g., 1 RB (Resource Block)), but due to a deterioration in channel quality at a certain time in a certain area, even with power ramping or beam switching, transmission of the preamble on 1 RB may fail. According to the embodiments of this application, introducing the switching / updating of the RACH format in retransmission and determining the preamble retransmission power based on the RACH format update (e.g., from updating the RACH format from 1 RB to X RBs) can improve the retransmission success rate.

[0077] In some embodiments, controlling the power of the first access information includes one of the following: adjusting the power of the first access information; keeping the power of the first access information unchanged; or resetting the power of the first access information. Here, resetting may refer to setting the power to an initial value, a default value, or a power value configured by the network device, etc.

[0078] In some embodiments, the first transmission method includes one or more of the following:

[0079] When the RACH format changes, the power of the first access information is adjusted;

[0080] Even if the RACH format changes, the power of the first access information remains unchanged;

[0081] If the RACH format changes, the power of the first access information is reset;

[0082] The power of the first access information is adjusted without changing the RACH format;

[0083] Without changing the RACH format, the power of the first access information remains unchanged;

[0084] The power of the first access information is reset without changing the RACH format.

[0085] It is understood that the first transmission mode may include only one of the power control methods mentioned above, or it may include multiple methods. In practical applications, the first transmission mode can be configured to include a combination of multiple power control methods according to system conventions, protocol conventions, network configurations, or scenario requirements. For the sake of simplicity, the combination methods are not listed here; only some examples are provided below.

[0086] For example, the first transmission method may include: keeping the power of the first access information unchanged when the RACH format changes, and adjusting the power of the first access information when the RACH format does not change.

[0087] For example, the first transmission method may include: adjusting the power of the first access information when the RACH format changes, and keeping the power of the first access information unchanged when the RACH format does not change.

[0088] For example, the first transmission method may include: adjusting the power of the first access information when the RACH format changes, and adjusting the power of the first access information when the RACH format does not change; wherein the amount of adjustment of the power of the first access information may be the same or different in different situations.

[0089] For example, the first transmission method may include: resetting the power of the first access information when the RACH format changes, and adjusting the power of the first access information when the RACH format does not change.

[0090] In some embodiments, the first transmission method includes controlling the power of the first access information based on whether the RACH format has changed and whether the beam used or associated with the first access information has changed. That is, the first transmission method can further consider beam changes to control the power of the first access information. Beam changes (or associated reference signal changes / selections / updates) involved in the transmission of the first access information can address beam misalignment (mismatch) issues. By considering the relationship between RACH format changes, beam changes, and power control, the transmission of the first access information can be performed more flexibly, which is beneficial for improving the success rate and efficiency of random access.

[0091] In some embodiments, the first transmission method includes one or more of the following:

[0092] If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information is adjusted.

[0093] If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information remains unchanged.

[0094] If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information is reset.

[0095] If the RACH format changes, but the beam used or associated with the first access information does not change, the power of the first access information is adjusted.

[0096] If the RACH format changes, but the beam used or associated with the first access information does not change, the power of the first access information remains unchanged.

[0097] If the RACH format changes but the beam used or associated with the first access information does not change, the power of the first access information is reset.

[0098] If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information is adjusted.

[0099] If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information remains unchanged.

[0100] If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information is reset.

[0101] The power of the first access information is adjusted if the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged.

[0102] If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information remains unchanged.

[0103] If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information is reset.

[0104] It is understood that the first transmission method may include only one of the above power control methods, or it may include multiple methods. In practical applications, the first transmission method may include a combination of multiple power control methods according to system conventions, protocol conventions, network configurations, or scenario requirements. For the sake of brevity, they will not be listed one by one here.

[0105] In some embodiments, the RACH format is determined based on one or more of the following:

[0106] Information characteristics of the first access information;

[0107] The relationship between the RACH format and the reference signal.

[0108] In other words, the RACH format can include information features of the first access information and / or association features with the reference signal. Specifically, if the information features of two access information are different, it can be considered that the two access information use different RACH formats, and / or, if the two access information are associated with different reference signals, it can be considered that the two access information use different RACH formats. The information features of the first access information can also be understood as the features of the RACH format itself.

[0109] Information characteristics of the first access information:

[0110] In some embodiments, the information features include one or more of the following: transmission format, sequence type, sequence length, time domain resources, frequency domain resources, and subcarrier spacing.

[0111] For example, the transmission format may include one or more of the following: the number of repetitions, a cyclic prefix, and a sequence interval. For instance, the transmission format may include repetitions 2, 3, or 5 times, and / or the length of the cyclic prefix is ​​N / 4, N / 8, N / 16, etc. (where N is the sequence length), and / or the sequence interval is all 0s or all 1s.

[0112] For example, the sequence type may include ZC sequences or Gold sequences, etc.

[0113] For example, the sequence length can be 839, 139, etc.

[0114] For example, time-domain resources, including random access, can be one symbol or multiple symbols.

[0115] For example, the frequency domain resources can be 1 RB, 2 RB, 3 RB, 4 RB, 5 RB, 6 RB, 8 RB, 9 RB, ​​10 RB, 12 RB, 18 RB or 24 RB, etc.

[0116] For example, the subcarrier spacing can be 1.25 kHz, 2.5 kHz, 5 kHz, 15 kHz, 30 kHz, 60 kHz, 120 kHz or 240 kHz, etc.

[0117] Regarding the relationship between the RACH format and the reference signal:

[0118] The association between different RACH formats (e.g., random access channel resources (RACH occasion, RO), including time-domain resources and / or frequency-domain resources) and a specific reference signal can be configured independently and can be different. That is to say, in addition to being different themselves, RACH formats can also be different in their association with a specific reference signal.

[0119] In some embodiments, the reference signal mentioned above includes SSB or CSI-RS.

[0120] For example, the association between RACH formats (e.g., RO resources) and reference signals can be: multiple RACH formats (e.g., multiple RO resources) associated with one SSB, or one RACH format (e.g., one RO resource) associated with multiple SSBs, or multiple RACH formats (e.g., multiple RO resources) associated with multiple SSBs. It is understood that the reference signal in the above association can also be a CSI-RS.

[0121] The differences in the aforementioned information characteristics or the different relationships between the RACH format and the reference signal can all be considered as different RACH formats. That is, when the information characteristics of the first access information are different or the relationship between the RACH format and the reference signal is different in two transmissions, it can be considered that the RACH format used or associated with the first access information has changed.

[0122] In some embodiments, the beam used or associated with the first access information includes: a reference signal associated with the first access information transmission, or a reference signal associated with the RACH format used or associated with the first access information. For example, the beam used or associated with the first access information includes an SSB or CSI-RS associated with the first access information transmission, which may also be a reference signal associated with the RACH format.

[0123] For example, in the first transmission method described above, the beam used or associated with the first access information changes, including: the SSB or CSI-RS selected by the terminal device (as associated with the first access information transmission) changes compared to the SSB or CSI-RS selected in the previous random access first access information transmission.

[0124] For example, in the first transmission method described above, the beam used or associated with the first access information has not changed, including: the SSB or CSI-RS selected by the terminal device (as associated with the first access information transmission) has not changed compared with the SSB or CSI-RS selected in the previous random access first access information transmission.

[0125] In some embodiments, adjusting the power of the first access information includes increasing or decreasing the power of the first access information. Specifically, adjusting the power of the first access information includes one or more of the following:

[0126] The power ramp counter used to record the first access information increments by a first value;

[0127] Increase the power of the first access information by the first power value;

[0128] The power ramp counter used to record the first access information decreases by a second value;

[0129] Control the power of the first access information to reduce the second power value.

[0130] For example, adjusting the power of the first access information includes incrementing a first value in a counter (PREAMBLE_POWER_RAMPING_COUNTER) used to record the power ramp-up of the first access information. The first value is, for example, 1. For instance, the terminal device uses this counter to control the power of the first access information; different values ​​of the counter correspond to different power values. When the counter increments by 1, the power of the first access information is adjusted to the power value corresponding to the incremented counter value.

[0131] For example, adjusting the power of the first access information includes controlling the power of the first access information to increase by a first power value. The first power value is, for example, X dB (decibel) (or Y dBm) power, where X (or Y) is a predefined value of the protocol, or X (or Y) is configured by the network device. For example, X can be equal to 1, 2, 3, 4, 5, 6, 7, 8, 9, etc.; and Y can be equal to 1, 2, 3, 4, 5, 6, 7, 8, 9, etc.

[0132] For example, adjusting the power of the first access information includes incrementing a counter used to record the power ramp-up of the first access information by a first value, and controlling the power of the first access information to increase by a first power value. For instance, the terminal device uses this counter to implement power control of the first access information, such that whenever the counter increments by the first value, the power of the first access information increases by the first power value.

[0133] For example, adjusting the power of the first access information includes decrementing a second value of a counter (PREAMBLE_POWER_RAMPING_COUNTER) used to record the power ramp-up of the first access information. The second value is, for example, 1. For instance, the terminal device uses this counter to control the power of the first access information; different values ​​of the counter correspond to different power values. When the counter is decremented by 1, the power of the first access information is adjusted to the power value corresponding to the decremented counter value.

[0134] For example, adjusting the power of the first access information includes controlling the power of the first access information to decrease a second power value. The second power value is, for example, X dB (or Y dBm) power, where X (or Y) is a predefined value of the protocol, or X (or Y) is configured by the network device. For example, X can be equal to 1, 2, 3, 4, 5, 6, 7, 8, 9, etc.; and Y can be equal to 1, 2, 3, 4, 5, 6, 7, 8, 9, etc.

[0135] For example, adjusting the power of the first access information includes decreasing a counter used to record the power ramp-up of the first access information by a second value, and controlling the power of the first access information to decrease by a second power value. For instance, the terminal device uses this counter to implement power control of the first access information, such that whenever the counter decreases by a second value, the power of the first access information decreases by a second power value.

[0136] In some embodiments, keeping the power of the first access information constant includes: not performing power ramping on the power used for transmitting the first access information. Optionally, keeping the power of the first access information constant may include: keeping the counter used to record the power ramping of the first access information constant.

[0137] In some embodiments, resetting the power of the first access information includes: resetting a counter used to record the power ramp-up of the first access information to a third value; wherein the third value is predefined by the protocol or configured by the network device. For example, it may be reset to Z, where Z is predefined by the protocol, or Z is a parameter that the network device notifies the terminal device of, for example, the network device may broadcast a specific Z value to the terminal device.

[0138] In some embodiments, the first transmission method further includes: under a first condition, transmitting first access information using a first RACH format associated with the first condition. That is, in the first transmission method, a specific first RACH format should be used under specific conditions.

[0139] In some embodiments, the association between the first condition and the first RACH format is agreed upon by the protocol or configured by the network device.

[0140] In some embodiments, the first RACH format may be a basic RACH format, such as an initial RACH format, or a fallback RACH format.

[0141] The first condition includes one or more of the following:

[0142] (1) Process the first service; that is, the first RACH format is the RACH format corresponding to the specific first service. Optionally, the first service may include high-priority services and / or latency-sensitive services, etc.

[0143] (2) The number of transmissions or retransmissions of the first access information reaches a first threshold; that is, after the first access information is transmitted or retransmitted a certain number of times (e.g., the transmission counter or retransmission counter reaches the first threshold), a specific first RACH format must be used, such as the initial RACH format or the fallback RACH format. Optionally, the first transmission method may also include: when the number of transmissions or retransmissions of the first access information reaches the first threshold, the first access information is transmitted using a specific power (third power value), such as the maximum transmission power, the reference transmission power, the starting transmission power, etc.

[0144] (3) The power of the first access information reaches the second threshold; that is, when the power of the first access information transmission or retransmission reaches a specific power value (e.g., the power counter reaches a specific threshold value), a specific first RACH format, such as initial RACH format or fallback RACH format, must be used.

[0145] In some embodiments, one or more of the first service, the first threshold, and the second threshold are agreed upon by the protocol or configured by the network device. That is, one or more of the aforementioned specific service, the specific number of times the first access information is transmitted or retransmitted, and the specific power value reached by the first access information transmission or retransmission power (the specific threshold value reached by the power counter) can be determined by the protocol or by the configuration of the network device.

[0146] Optionally, in any of the above embodiments, the network device may indicate information or configuration parameters through one or more of the following messages: broadcast message, RRC message, DCI message, PDCCH, and PDSCH. Broadcast messages may include, for example, MIB, SIB1, or SIB2.

[0147] In the random access process, particularly in the retransmission rules for the first access information, this application's embodiments consider the retransmission relationships and rule design for different RACH formats. While supporting flexible RACH format design, it addresses the retransmission scheme selection problem arising from flexible RACH formats. By establishing the relationship between preset RACH format updates, beam selection updates, and power ramping, the transmission scheme and power selection criteria for the first access information are determined. According to this application's embodiments, the transmission of the first access information can be performed more flexibly, which is beneficial for improving the success rate and efficiency of access.

[0148] Figure 6 is a schematic block diagram of a terminal device 600 according to an embodiment of the present application. The terminal device 600 may include:

[0149] The first communication module 610 is used to send first access information to a network device based on a first transmission method; wherein the first transmission method includes controlling the power of the first access information based on the RACH format used or associated with the first access information.

[0150] In some embodiments, the first transmission method includes controlling the power of the first access information based on whether the RACH format has changed.

[0151] In some embodiments, the first transmission method includes one or more of the following:

[0152] When the RACH format changes, the power of the first access information is adjusted;

[0153] Even if the RACH format changes, the power of the first access information remains unchanged;

[0154] If the RACH format changes, the power of the first access information is reset;

[0155] The power of the first access information is adjusted without changing the RACH format;

[0156] Without changing the RACH format, the power of the first access information remains unchanged;

[0157] The power of the first access information is reset without changing the RACH format.

[0158] In some embodiments, the first transmission method includes controlling the power of the first access information based on whether the RACH format has changed and whether the beam used or associated with the first access information has changed.

[0159] In some embodiments, the first transmission method includes one or more of the following:

[0160] If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information is adjusted.

[0161] If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information remains unchanged.

[0162] If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information is reset.

[0163] If the RACH format changes, but the beam used or associated with the first access information does not change, the power of the first access information is adjusted.

[0164] If the RACH format changes, but the beam used or associated with the first access information does not change, the power of the first access information remains unchanged.

[0165] If the RACH format changes but the beam used or associated with the first access information does not change, the power of the first access information is reset.

[0166] If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information is adjusted.

[0167] If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information remains unchanged.

[0168] If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information is reset.

[0169] The power of the first access information is adjusted if the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged.

[0170] If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information remains unchanged.

[0171] If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information is reset.

[0172] In some embodiments, the first access information includes a preamble.

[0173] In some embodiments, the first access information includes the preamble in Msg1 in four-step random access or in MsgA in two-step random access.

[0174] In some embodiments, the first access information includes MsgA, MsgA's PDCCH, MsgA's PDSCH, or MsgA's DMRS in two-step random access.

[0175] In some embodiments, the RACH format is determined based on one or more of the following:

[0176] Information characteristics of the first access information;

[0177] The relationship between the RACH format and the reference signal.

[0178] In some embodiments, the information features include one or more of the following: transmission format, sequence type, sequence length, time domain resources, frequency domain resources, and subcarrier spacing.

[0179] In some embodiments, the reference signal includes SSB and / or CSI-RS.

[0180] In some embodiments, the beam used or associated with the first access information includes:

[0181] The reference signal associated with the first access information transmission;

[0182] Alternatively, the reference signal associated with the RACH format used or associated with the first access information.

[0183] In some embodiments, controlling the power of the first access information includes one of the following:

[0184] Adjust the power of the first access information;

[0185] Keep the power of the first access information constant;

[0186] The power of the first access information is reset.

[0187] In some embodiments, adjusting the power of the first access information includes one or more of the following:

[0188] The power ramp counter used to record the first access information increments by a first value;

[0189] Increase the power of the first access information by the first power value;

[0190] The power ramp counter used to record the first access information decreases by a second value;

[0191] Control the power of the first access information to reduce the second power value.

[0192] In some embodiments, keeping the power of the first access information constant includes keeping the counter used to record the power ramp-up of the first access information constant.

[0193] In some embodiments, resetting the power of the first access information includes: resetting a counter used to record the power ramp of the first access information to a third value; wherein the third value is predefined by the protocol or configured by the network device.

[0194] In some embodiments, the first transmission method further includes: under a first condition, transmitting first access information using a first RACH format associated with the first condition.

[0195] In some embodiments, the association between the first condition and the first RACH format is agreed upon by the protocol or configured by the network device.

[0196] In some embodiments, the first condition includes one or more of the following:

[0197] Handle the primary business;

[0198] The number of transmissions or retransmissions of the first access information reaches the first threshold;

[0199] The power of the first access information reaches the second threshold.

[0200] In some embodiments, one or more of the first service, the first threshold, and the second threshold are agreed upon by the protocol or configured by the network device.

[0201] The terminal device 600 of this application embodiment can implement the corresponding functions of the terminal device in the foregoing method embodiments. The processes, functions, implementation methods, and beneficial effects of each module (sub-module, unit, or component, etc.) in the terminal device 600 can be found in the corresponding descriptions in the above method embodiments, and will not be repeated here. It should be noted that the functions described for each module (sub-module, unit, or component, etc.) in the terminal device 600 of the application embodiment can be implemented by different modules (sub-modules, units, or components, etc.) or by the same module (sub-module, unit, or component, etc.).

[0202] Figure 7 is a schematic block diagram of a network device 700 according to an embodiment of the present application. The network device 700 may include:

[0203] The second communication module 710 is used to receive first access information sent by the terminal device based on a first transmission method; wherein the first transmission method includes controlling the power of the first access information based on the RACH format used or associated with the first access information.

[0204] In some embodiments, the first transmission method includes controlling the power of the first access information based on whether the RACH format has changed.

[0205] In some embodiments, the first transmission method includes one or more of the following:

[0206] When the RACH format changes, the power of the first access information is adjusted;

[0207] Even if the RACH format changes, the power of the first access information remains unchanged;

[0208] If the RACH format changes, the power of the first access information is reset;

[0209] The power of the first access information is adjusted without changing the RACH format;

[0210] Without changing the RACH format, the power of the first access information remains unchanged;

[0211] The power of the first access information is reset without changing the RACH format.

[0212] In some embodiments, the first transmission method includes controlling the power of the first access information based on whether the RACH format has changed and whether the beam used or associated with the first access information has changed.

[0213] In some embodiments, the first transmission method includes one or more of the following:

[0214] If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information is adjusted.

[0215] If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information remains unchanged.

[0216] If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information is reset.

[0217] If the RACH format changes, but the beam used or associated with the first access information does not change, the power of the first access information is adjusted.

[0218] If the RACH format changes, but the beam used or associated with the first access information does not change, the power of the first access information remains unchanged.

[0219] If the RACH format changes but the beam used or associated with the first access information does not change, the power of the first access information is reset.

[0220] If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information is adjusted.

[0221] If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information remains unchanged.

[0222] If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information is reset.

[0223] The power of the first access information is adjusted if the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged.

[0224] If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information remains unchanged.

[0225] If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information is reset.

[0226] In some embodiments, the first access information includes a preamble.

[0227] In some embodiments, the first access information includes the preamble in Msg1 in four-step random access or in MsgA in two-step random access.

[0228] In some embodiments, the first access information includes MsgA, MsgA's PDCCH, MsgA's PDSCH, or MsgA's DMRS in two-step random access.

[0229] In some embodiments, the RACH format is determined based on one or more of the following:

[0230] Information characteristics of the first access information;

[0231] The relationship between the RACH format and the reference signal.

[0232] In some embodiments, the information features include one or more of the following: transmission format, sequence type, sequence length, time domain resources, frequency domain resources, and subcarrier spacing.

[0233] In some embodiments, the reference signal includes SSB and / or CSI-RS.

[0234] In some embodiments, the beam used or associated with the first access information includes:

[0235] The reference signal associated with the first access information transmission;

[0236] Alternatively, the reference signal associated with the RACH format used or associated with the first access information.

[0237] In some embodiments, controlling the power of the first access information includes one of the following:

[0238] Adjust the power of the first access information;

[0239] Keep the power of the first access information constant;

[0240] The power of the first access information is reset.

[0241] In some embodiments, adjusting the power of the first access information includes one or more of the following:

[0242] The power ramp counter used to record the first access information increments by a first value;

[0243] Increase the power of the first access information by the first power value;

[0244] The power ramp counter used to record the first access information decreases by a second value;

[0245] Control the power of the first access information to reduce the second power value.

[0246] In some embodiments, keeping the power of the first access information constant includes keeping the counter used to record the power ramp-up of the first access information constant.

[0247] In some embodiments, resetting the power of the first access information includes: resetting a counter used to record the power ramp of the first access information to a third value; wherein the third value is predefined by the protocol or configured by the network device.

[0248] In some embodiments, the first transmission method further includes: under a first condition, transmitting first access information using a first RACH format associated with the first condition.

[0249] In some embodiments, the association between the first condition and the first RACH format is agreed upon by the protocol or configured by the network device.

[0250] In some embodiments, the first condition includes one or more of the following:

[0251] Handle the primary business;

[0252] The number of transmissions or retransmissions of the first access information reaches the first threshold;

[0253] The power of the first access information reaches the second threshold.

[0254] In some embodiments, one or more of the first service, the first threshold, and the second threshold are agreed upon by the protocol or configured by the network device.

[0255] The network device 700 of this application embodiment can implement the corresponding functions of the network device in the foregoing method embodiments. The processes, functions, implementation methods, and beneficial effects of each module (sub-module, unit, or component, etc.) in the network device 700 can be found in the corresponding descriptions in the above method embodiments, and will not be repeated here. It should be noted that the functions described for each module (sub-module, unit, or component, etc.) in the network device 700 of the application embodiment can be implemented by different modules (sub-modules, units, or components, etc.) or by the same module (sub-module, unit, or component, etc.).

[0256] Figure 8 is a schematic structural diagram of a communication device 800 according to an embodiment of this application. The communication device 800 includes a processor 810, which can call and run computer programs from memory to enable the communication device 800 to implement the methods in the embodiments of this application.

[0257] In one embodiment, the communication device 800 may further include a memory 820. The processor 810 can retrieve and run computer programs from the memory 820 to enable the communication device 800 to implement the methods described in the embodiments of this application.

[0258] The memory 820 can be a separate device independent of the processor 810, or it can be integrated into the processor 810.

[0259] In one embodiment, the communication device 800 may further include a transceiver 830, which the processor 810 may control to communicate with other devices. Specifically, it may send information or data to other devices or receive information or data sent by other devices.

[0260] The transceiver 830 may include a transmitter and a receiver. The transceiver 830 may further include an antenna, and the number of antennas may be one or more.

[0261] In one embodiment, the communication device 800 may be a network device in the embodiments of this application, and the communication device 800 may implement the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0262] In one embodiment, the communication device 800 may be a terminal device in the embodiments of this application, and the communication device 800 may implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0263] Figure 9 is a schematic structural diagram of a chip 900 according to an embodiment of this application. The chip 900 includes a processor 910, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0264] In one embodiment, chip 900 may further include memory 920. Processor 910 can retrieve and run computer programs from memory 920 to implement the methods executed by the terminal device or network device in this embodiment.

[0265] The memory 920 can be a separate device independent of the processor 910, or it can be integrated into the processor 910.

[0266] In one embodiment, the chip 900 may further include an input interface 930. The processor 910 can control the input interface 930 to communicate with other devices or chips; specifically, it can acquire information or data sent by other devices or chips.

[0267] In one embodiment, the chip 900 may further include an output interface 940. The processor 910 can control the output interface 940 to communicate with other devices or chips; specifically, it can output information or data to other devices or chips.

[0268] In one implementation, the chip can be applied to the network device in the embodiments of this application, and the chip can implement the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0269] In one embodiment, the chip can be applied to the terminal device in the embodiments of this application, and the chip can implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0270] The chips used in network equipment and terminal equipment can be the same chip or different chips.

[0271] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0272] The processors mentioned above can be general-purpose processors, digital signal processors (DSPs), field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), or other programmable logic devices, transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processors mentioned above can be microprocessors or any conventional processor.

[0273] The aforementioned memory can be volatile memory or non-volatile memory, or a combination of both. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM).

[0274] It should be understood that the above-described memory is exemplary and not a limiting description. For example, the memory in the embodiments of this application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM), etc. That is to say, the memory in the embodiments of this application is intended to include, but is not limited to, these and any other suitable types of memory.

[0275] Figure 10 is a schematic block diagram of a communication system 1000 according to an embodiment of this application. The communication system 1000 includes a terminal device 1010 and a network device 1020.

[0276] Terminal device 1010 sends first access information to network device 1020 based on a first transmission method; wherein, the first transmission method includes controlling the power of the first access information based on the RACH format used or associated with the first access information.

[0277] Network device 1020 receives first access information sent by terminal device 1010 based on a first transmission method.

[0278] Specifically, the terminal device 1010 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1020 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, further details are omitted here.

[0279] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. This computer program product includes one or more computer instructions. When these computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state drives (SSDs)).

[0280] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0281] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0282] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An information transmission method, comprising: The terminal device sends first access information to the network device based on a first transmission method; wherein, the first transmission method includes controlling the power of the first access information based on the random access channel (RACH) format used or associated with the first access information.

2. The method of claim 1, wherein, The first transmission method includes controlling the power of the first access information based on whether the RACH format has changed.

3. The method of claim 2, wherein, The first transmission method includes one or more of the following: If the RACH format changes, the power of the first access information is adjusted; In the event of a change in the RACH format, the power of the first access information remains unchanged; If the RACH format changes, the power of the first access information is reset; The power of the first access information is adjusted without changing the RACH format; Without changing the RACH format, the power of the first access information remains unchanged; If the RACH format remains unchanged, the power of the first access information is reset.

4. The method of claim 1, wherein, The first transmission method includes controlling the power of the first access information based on whether the RACH format has changed and whether the beam used or associated with the first access information has changed.

5. The method of claim 4, wherein, The first transmission method includes one or more of the following: If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information is adjusted. If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information remains unchanged. If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information is reset. If the RACH format changes, but the beam used or associated with the first access information does not change, the power of the first access information is adjusted. If the RACH format changes, but the beam used or associated with the first access information does not change, the power of the first access information remains unchanged. If the RACH format changes but the beam used or associated with the first access information does not change, the power of the first access information is reset. If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information is adjusted. If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information remains unchanged. If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information is reset. If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information is adjusted. If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information remains unchanged. If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information is reset.

6. The method of any one of claims 1-5, wherein, The first access information includes a preamble.

7. The method of claim 6, wherein, The first access information includes the preamble in Msg1 in four-step random access or in MsgA in two-step random access.

8. The method of any one of claims 1-7, wherein, The first access information includes MsgA in two-step random access, the physical downlink control channel (PDCCH) of MsgA, the physical downlink shared channel (PDSCH) of MsgA, or the demodulation reference signal (DMRS) of MsgA.

9. The method of any one of claims 1-8, wherein, The RACH format is determined based on one or more of the following: Information characteristics of the first access information; The relationship between the RACH format and the reference signal.

10. The method of claim 9, wherein, The information features include one or more of the following: transmission format, sequence type, sequence length, time domain resources, frequency domain resources, and subcarrier spacing.

11. The method of claim 9 or 10, wherein, The reference signals include the Synchronization Signal Block (SSB) and / or the Channel State Information Reference Signal (CSI-RS).

12. The method of claim 4 or 5, wherein, The beams used or associated with the first access information include: The reference signal associated with the first access information transmission; Alternatively, the reference signal associated with the RACH format used or associated with the first access information.

13. The method of any one of claims 1-12, wherein, The power control of the first access information includes one of the following: Adjust the power of the first access information; Keep the power of the first access information unchanged; The power of the first access information is reset.

14. The method of claim 13, wherein, The adjustment of the power of the first access information includes one or more of the following: The power ramp counter used to record the first access information is incremented by a first value; Increase the power of the first access information by a first power value; The power ramp counter used to record the first access information is decremented by a second value; Control the power of the first access information to reduce the second power value.

15. The method of claim 13 or 14, wherein, Maintaining the power of the first access information unchanged includes keeping the counter used to record the power ramp-up of the first access information unchanged.

16. The method of any one of claims 13-15, wherein, The step of resetting the power of the first access information includes: resetting the counter used to record the power ramp-up of the first access information to a third value; wherein the third value is predefined by the protocol or configured by the network device.

17. The method of any one of claims 1-16, wherein, The first transmission method further includes: under a first condition, transmitting the first access information using a first RACH format associated with the first condition.

18. The method of claim 17, wherein, The association between the first condition and the first RACH format is agreed upon by the protocol or configured by the network device.

19. The method of claim 17 or 18, wherein, The first condition includes one or more of the following: Handle the primary business; The number of transmissions or retransmissions of the first access information reaches the first threshold; The power of the first access information reaches the second threshold.

20. The method of claim 19, wherein, One or more of the first service, the first threshold, and the second threshold are agreed upon by the protocol or configured by the network device.

21. An information transmission method, comprising: The network device receives first access information sent by the terminal device based on a first transmission method; wherein the first transmission method includes controlling the power of the first access information based on the RACH format used or associated with the first access information.

22. The method of claim 21, wherein, The first transmission method includes controlling the power of the first access information based on whether the RACH format has changed.

23. The method of claim 22, wherein, The first transmission method includes one or more of the following: If the RACH format changes, the power of the first access information is adjusted; If the RACH format changes, the power of the first access information remains unchanged; If the RACH format changes, the power of the first access information is reset; The power of the first access information is adjusted without changing the RACH format; Without changing the RACH format, the power of the first access information remains unchanged; If the RACH format remains unchanged, the power of the first access information is reset.

24. The method of claim 21, wherein, The first transmission method includes controlling the power of the first access information based on whether the RACH format has changed and whether the beam used or associated with the first access information has changed.

25. The method of claim 24, wherein, The first transmission method includes one or more of the following: If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information is adjusted. If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information remains unchanged. If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information is reset. If the RACH format changes, but the beam used or associated with the first access information does not change, then... The power of the first access information is adjusted; If the RACH format changes, but the beam used or associated with the first access information does not change, the power of the first access information remains unchanged. If the RACH format changes but the beam used or associated with the first access information does not change, the power of the first access information is reset. If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information is adjusted. If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information remains unchanged. If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information is reset. If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information is adjusted. If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information remains unchanged. If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information is reset.

26. The method of any one of claims 21-25, wherein, The first access information includes a preamble.

27. The method of claim 26, wherein, The first access information includes the preamble in Msg1 in four-step random access or in MsgA in two-step random access.

28. The method of any one of claims 21-27, wherein, The first access information includes MsgA in two-step random access, the PDCCH of MsgA, the PDSCH of MsgA, or the DMRS of MsgA.

29. The method of any one of claims 21-28, wherein, The RACH format is determined based on one or more of the following: Information characteristics of the first access information; The relationship between the RACH format and the reference signal.

30. The method of claim 29, wherein, The information features include one or more of the following: transmission format, sequence type, sequence length, time domain resources, frequency domain resources, and subcarrier spacing.

31. The method of claim 29 or 30, wherein, The reference signal includes SSB and / or CSI-RS.

32. The method of claim 24 or 25, wherein, The beams used or associated with the first access information include: The reference signal associated with the first access information transmission; Alternatively, the reference signal associated with the RACH format used or associated with the first access information.

33. The method of any one of claims 21-32, wherein, The power control of the first access information includes one of the following: Adjust the power of the first access information; Keep the power of the first access information unchanged; The power of the first access information is reset.

34. The method of claim 33, wherein, The adjustment of the power of the first access information includes one or more of the following: The power ramp counter used to record the first access information is incremented by a first value; Increase the power of the first access information by a first power value; The power ramp counter used to record the first access information is decremented by a second value; Control the power of the first access information to reduce the second power value.

35. The method of claim 33 or 34, wherein, Maintaining the power of the first access information unchanged includes keeping the counter used to record the power ramp-up of the first access information unchanged.

36. The method of any one of claims 33-35, wherein, The step of resetting the power of the first access information includes: resetting the counter used to record the power ramp-up of the first access information to a third value; wherein the third value is predefined by the protocol or configured by the network device.

37. The method of any one of claims 21-36, wherein, The first transmission method further includes: under a first condition, transmitting the first access information using a first RACH format associated with the first condition.

38. The method of claim 37, wherein, The association between the first condition and the first RACH format is agreed upon by the protocol or configured by the network device.

39. The method of claim 37 or 38, wherein, The first condition includes one or more of the following: Handle the primary business; The number of transmissions or retransmissions of the first access information reaches the first threshold; The power of the first access information reaches the second threshold.

40. The method of claim 39, wherein, One or more of the first service, the first threshold, and the second threshold are agreed upon by the protocol or configured by the network device.

41. A terminal device, comprising: A first communication module is configured to send first access information to a network device based on a first transmission method; wherein the first transmission method includes controlling the power of the first access information based on the RACH format used or associated with the first access information.

42. The terminal device of claim 41, wherein, The first transmission method includes controlling the power of the first access information based on whether the RACH format has changed.

43. The terminal device of claim 42, wherein, The first transmission method includes one or more of the following: If the RACH format changes, the power of the first access information is adjusted; If the RACH format changes, the power of the first access information remains unchanged; If the RACH format changes, the power of the first access information is reset; The power of the first access information is adjusted without changing the RACH format; Without changing the RACH format, the power of the first access information remains unchanged; If the RACH format remains unchanged, the power of the first access information is reset.

44. The terminal device of claim 41, wherein, The first transmission method includes controlling the power of the first access information based on whether the RACH format has changed and whether the beam used or associated with the first access information has changed.

45. The terminal device of claim 44, wherein, The first transmission method includes one or more of the following: If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information is adjusted. If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information remains unchanged. If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information is reset. If the RACH format changes, but the beam used or associated with the first access information does not change, the power of the first access information is adjusted. If the RACH format changes, but the beam used or associated with the first access information does not change, the power of the first access information remains unchanged. If the RACH format changes but the beam used or associated with the first access information does not change, the power of the first access information is reset. If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information is adjusted. If the RACH format remains unchanged and the beam used or associated with the first access information changes, the power of the first access information remains unchanged. If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information is reset. If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information is adjusted. If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information remains unchanged. If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information is reset.

46. The terminal device of any one of claims 41-45, wherein, The first access information includes a preamble.

47. The terminal device of claim 46, wherein, The first access information includes the preamble in Msg1 in four-step random access or in MsgA in two-step random access.

48. The terminal device of any one of claims 41-47, wherein, The first access information includes MsgA in two-step random access, the PDCCH of MsgA, the PDSCH of MsgA, or the DMRS of MsgA.

49. The terminal device of any one of claims 41-48, wherein, The RACH format is determined based on one or more of the following: Information characteristics of the first access information; The relationship between the RACH format and the reference signal.

50. The terminal device of claim 49, wherein, The information features include one or more of the following: transmission format, sequence type, sequence length, time domain resources, frequency domain resources, and subcarrier spacing.

51. The terminal device of claim 49 or 50, wherein, The reference signal includes SSB and / or CSI-RS.

52. The terminal device of claim 44 or 45, wherein, The beams used or associated with the first access information include: The reference signal associated with the first access information transmission; Alternatively, the reference signal associated with the RACH format used or associated with the first access information.

53. The terminal device of any one of claims 41-52, wherein, The power control of the first access information includes one of the following: Adjust the power of the first access information; Keep the power of the first access information unchanged; The power of the first access information is reset.

54. The terminal device of claim 53, wherein, The adjustment of the power of the first access information includes one or more of the following: The power ramp counter used to record the first access information is incremented by a first value; Increase the power of the first access information by a first power value; The power ramp counter used to record the first access information is decremented by a second value; Control the power of the first access information to reduce the second power value.

55. The terminal device of claim 53 or 54, wherein, Maintaining the power of the first access information unchanged includes keeping the counter used to record the power ramp-up of the first access information unchanged.

56. The terminal device of any one of claims 53-55, wherein, The step of resetting the power of the first access information includes: resetting the counter used to record the power ramp-up of the first access information to a third value; wherein the third value is predefined by the protocol or configured by the network device.

57. The terminal device of any one of claims 41-56, wherein, The first transmission method further includes: under a first condition, transmitting the first access information using a first RACH format associated with the first condition.

58. The terminal device of claim 57, wherein, The association between the first condition and the first RACH format is agreed upon by the protocol or configured by the network device.

59. The terminal device of claim 57 or 58, wherein, The first condition includes one or more of the following: Handle the primary business; The number of transmissions or retransmissions of the first access information reaches the first threshold; The power of the first access information reaches the second threshold.

60. The terminal device of claim 59, wherein, One or more of the first service, the first threshold, and the second threshold are agreed upon by the protocol or configured by the network device.

61. A network device, comprising: The second communication module is used to receive first access information sent by the terminal device based on a first transmission method; wherein the first transmission method includes controlling the power of the first access information based on the RACH format used or associated with the first access information.

62. The network device of claim 61, wherein, The first transmission method includes controlling the power of the first access information based on whether the RACH format has changed.

63. The network device of claim 62, wherein, The first transmission method includes one or more of the following: If the RACH format changes, the power of the first access information is adjusted; In the event of a change in the RACH format, the power of the first access information remains unchanged; If the RACH format changes, the power of the first access information is reset; The power of the first access information is adjusted without changing the RACH format; Without changing the RACH format, the power of the first access information remains unchanged; If the RACH format remains unchanged, the power of the first access information is reset.

64. The network device of claim 61, wherein, The first transmission method includes controlling the power of the first access information based on whether the RACH format has changed and whether the beam used or associated with the first access information has changed.

65. The network device of claim 64, wherein, The first transmission method includes one or more of the following: If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information is adjusted. If the RACH format changes and the beam used or associated with the first access information changes, maintain The power of the first access information remains unchanged; If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information is reset. If the RACH format changes, but the beam used or associated with the first access information does not change, the power of the first access information is adjusted. If the RACH format changes, but the beam used or associated with the first access information does not change, the power of the first access information remains unchanged. If the RACH format changes but the beam used or associated with the first access information does not change, the power of the first access information is reset. If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information is adjusted. If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information remains unchanged. If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information is reset. If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information is adjusted. If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information remains unchanged. If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information is reset.

66. The network device of any of claims 61-65, wherein, The first access information includes a preamble.

67. The network device of claim 66, wherein, The first access information includes the preamble in Msg1 in four-step random access or in MsgA in two-step random access.

68. The network device of any of claims 61-67, wherein, The first access information includes MsgA in two-step random access, the PDCCH of MsgA, the PDSCH of MsgA, or the DMRS of MsgA.

69. The network device of any of claims 61-68, wherein, The RACH format is determined based on one or more of the following: Information characteristics of the first access information; The relationship between the RACH format and the reference signal.

70. The network device of claim 69, wherein, The information features include one or more of the following: transmission format, sequence type, sequence length, time domain resources, frequency domain resources, and subcarrier spacing.

71. The network device of claim 69 or 70, wherein, The reference signal includes SSB and / or CSI-RS.

72. The network device of claim 64 or 65, wherein, The beams used or associated with the first access information include: The reference signal associated with the first access information transmission; Alternatively, the reference signal associated with the RACH format used or associated with the first access information.

73. The network device of any of claims 61-72, wherein, The power control of the first access information includes one of the following: Adjust the power of the first access information; Keep the power of the first access information unchanged; The power of the first access information is reset.

74. The network device of claim 73, wherein, The adjustment of the power of the first access information includes one or more of the following: The power ramp counter used to record the first access information is incremented by a first value; Increase the power of the first access information by a first power value; The power ramp counter used to record the first access information is decremented by a second value; Control the power of the first access information to reduce the second power value.

75. The network device of claim 73 or 74, wherein, Maintaining the power of the first access information unchanged includes keeping the counter used to record the power ramp-up of the first access information unchanged.

76. The network device of any of claims 73-75, wherein, The step of resetting the power of the first access information includes: resetting the counter used to record the power ramp-up of the first access information to a third value; wherein the third value is predefined by the protocol or configured by the network device.

77. The network device of any of claims 61-76, wherein, The first transmission method further includes: under a first condition, transmitting the first access information using a first RACH format associated with the first condition.

78. The network device of claim 77, wherein, The association between the first condition and the first RACH format is agreed upon by the protocol or configured by the network device.

79. The network device of claim 77 or 78, wherein, The first condition includes one or more of the following: Handle the primary business; The number of transmissions or retransmissions of the first access information reaches the first threshold; The power of the first access information reaches the second threshold.

80. The network device of claim 79, wherein, One or more of the first service, the first threshold, and the second threshold are agreed upon by the protocol or configured by the network device.

81. A terminal device comprising: The transceiver, processor, and memory, wherein the memory stores computer programs, the transceiver communicates with other devices, and the processor invokes and runs the computer programs stored in the memory to cause the terminal device to perform the following: Based on a first transmission method, first access information is sent to a network device; wherein, the first transmission method includes controlling the power of the first access information based on the RACH format used or associated with the first access information.

82. The terminal device of claim 81, wherein, The first transmission method includes controlling the power of the first access information based on whether the RACH format has changed.

83. The terminal device of claim 82, wherein, The first transmission method includes one or more of the following: If the RACH format changes, the power of the first access information is adjusted; In the event of a change in the RACH format, the power of the first access information remains unchanged; If the RACH format changes, the power of the first access information is reset; The power of the first access information is adjusted without changing the RACH format; Without changing the RACH format, the power of the first access information remains unchanged; If the RACH format remains unchanged, the power of the first access information is reset.

84. The terminal device of claim 81, wherein, The first transmission method includes controlling the power of the first access information based on whether the RACH format has changed and whether the beam used or associated with the first access information has changed.

85. The terminal device of claim 84, wherein, The first transmission method includes one or more of the following: If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information is adjusted. If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information remains unchanged. If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information is reset. If the RACH format changes, but the beam used or associated with the first access information does not change, the power of the first access information is adjusted. If the RACH format changes, but the beam used or associated with the first access information does not change, the power of the first access information remains unchanged. If the RACH format changes but the beam used or associated with the first access information does not change, the power of the first access information is reset. If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information is adjusted. If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information remains unchanged. If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information is reset. If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information is adjusted. If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information remains unchanged. If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information is reset.

86. The terminal device of any one of claims 81-85, wherein, The first access information includes a preamble.

87. The terminal device of claim 86, wherein, The first access information includes the preamble in Msg1 in four-step random access or in MsgA in two-step random access.

88. The terminal device of any one of claims 81-87, wherein, The first access information includes MsgA in two-step random access, the PDCCH of MsgA, the PDSCH of MsgA, or the DMRS of MsgA.

89. The terminal device of any one of claims 81-88, wherein, The RACH format is determined based on one or more of the following: Information characteristics of the first access information; The relationship between the RACH format and the reference signal.

90. The terminal device of claim 89, wherein, The information features include one or more of the following: transmission format, sequence type, sequence length, time domain resources, frequency domain resources, and subcarrier spacing.

91. The terminal device of claim 89 or 90, wherein, The reference signal includes SSB and / or CSI-RS.

92. The terminal device of claim 84 or 85, wherein, The beams used or associated with the first access information include: The reference signal associated with the first access information transmission; Alternatively, the reference signal associated with the RACH format used or associated with the first access information.

93. The terminal device of any one of claims 81-92, wherein, The power control of the first access information includes one of the following: Adjust the power of the first access information; Keep the power of the first access information unchanged; The power of the first access information is reset.

94. The terminal device of claim 93, wherein, The adjustment of the power of the first access information includes one or more of the following: The power ramp counter used to record the first access information is incremented by a first value; Increase the power of the first access information by a first power value; The power ramp counter used to record the first access information is decremented by a second value; Control the power of the first access information to reduce the second power value.

95. The terminal device of claim 93 or 94, wherein, Maintaining the power of the first access information unchanged includes keeping the counter used to record the power ramp-up of the first access information unchanged.

96. The terminal device of any one of claims 93-95, wherein, The step of resetting the power of the first access information includes: resetting the counter used to record the power ramp-up of the first access information to a third value; wherein the third value is predefined by the protocol or configured by the network device.

97. The terminal device of any of claims 81-96, wherein, The first transmission method further includes: under a first condition, transmitting the first access information using a first RACH format associated with the first condition.

98. The terminal device of claim 97, wherein, The association between the first condition and the first RACH format is agreed upon by the protocol or configured by the network device.

99. The terminal device of claim 97 or 98, wherein, The first condition includes one or more of the following: Handle the primary business; The number of transmissions or retransmissions of the first access information reaches the first threshold; The power of the first access information reaches the second threshold.

100. The terminal device of claim 99, wherein, One or more of the first service, the first threshold, and the second threshold are agreed upon by the protocol or configured by the network device.

101. A network device comprising: The network device includes a transceiver, a processor, and a memory. The memory stores computer programs. The transceiver communicates with other devices. The processor invokes and runs the computer programs stored in the memory to cause the network device to perform the following: The receiving terminal device sends first access information based on a first transmission method; wherein the first transmission method includes controlling the power of the first access information based on the RACH format used or associated with the first access information.

102. The network device of claim 101, wherein, The first transmission method includes controlling the power of the first access information based on whether the RACH format has changed.

103. The network device of claim 102, wherein, The first transmission method includes one or more of the following: If the RACH format changes, the power of the first access information is adjusted; In the event of a change in the RACH format, the power of the first access information remains unchanged; If the RACH format changes, the power of the first access information is reset; The power of the first access information is adjusted without changing the RACH format; Without changing the RACH format, the power of the first access information remains unchanged; If the RACH format remains unchanged, the power of the first access information is reset.

104. The network device of claim 101, wherein, The first transmission method includes controlling the power of the first access information based on whether the RACH format has changed and whether the beam used or associated with the first access information has changed.

105. The network device of claim 104, wherein, The first transmission method includes one or more of the following: If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information is adjusted. If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information remains unchanged. If the RACH format changes and the beam used or associated with the first access information changes, the power of the first access information is reset. If the RACH format changes, but the beam used or associated with the first access information does not change, the power of the first access information is adjusted. If the RACH format changes, but the beam used or associated with the first access information does not change, the power of the first access information remains unchanged. If the RACH format changes but the beam used or associated with the first access information does not change, the power of the first access information is reset. If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information is adjusted. If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information remains unchanged. If the RACH format remains unchanged, but the beam used or associated with the first access information changes, the power of the first access information is reset. If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information is adjusted. If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information remains unchanged. If the RACH format remains unchanged and the beam used or associated with the first access information remains unchanged, the power of the first access information is reset.

106. The network device of any of claims 101-105, wherein, The first access information includes a preamble.

107. The network device of claim 106, wherein, The first access information includes the preamble in Msg1 in four-step random access or in MsgA in two-step random access.

108. The network device of any of claims 101-107, wherein, The first access information includes MsgA in two-step random access, the PDCCH of MsgA, the PDSCH of MsgA, or the DMRS of MsgA.

109. The network device of any of claims 101-108, wherein, The RACH format is determined based on one or more of the following: Information characteristics of the first access information; The relationship between the RACH format and the reference signal.

110. The network device of claim 109, wherein, The information features include one or more of the following: transmission format, sequence type, sequence length, time domain resources, frequency domain resources, and subcarrier spacing.

111. The network device of claim 109 or 110, wherein, The reference signal includes SSB and / or CSI-RS.

112. The network device of claim 104 or 105, wherein, The beams used or associated with the first access information include: The reference signal associated with the first access information transmission; Alternatively, the reference signal associated with the RACH format used or associated with the first access information.

113. The network device of any of claims 101-112, wherein, The power control of the first access information includes one of the following: Adjust the power of the first access information; Keep the power of the first access information unchanged; The power of the first access information is reset.

114. The network device of claim 113, wherein, The adjustment of the power of the first access information includes one or more of the following: The power ramp counter used to record the first access information is incremented by a first value; Increase the power of the first access information by a first power value; The power ramp counter used to record the first access information is decremented by a second value; Control the power of the first access information to reduce the second power value.

115. The network device of claim 113 or 114, wherein, Maintaining the power of the first access information unchanged includes keeping the counter used to record the power ramp-up of the first access information unchanged.

116. The network device of any of claims 113-115, wherein, The step of resetting the power of the first access information includes: resetting the counter used to record the power ramp-up of the first access information to a third value; wherein the third value is predefined by the protocol or configured by the network device.

117. The network device of any of claims 101-116, wherein, The first transmission method further includes: under a first condition, transmitting the first access information using a first RACH format associated with the first condition.

118. The network device of claim 117, wherein, The association between the first condition and the first RACH format is agreed upon by the protocol or configured by the network device.

119. The network device of claim 117 or 118, wherein, The first condition includes one or more of the following: Handle the primary business; The number of transmissions or retransmissions of the first access information reaches the first threshold; The power of the first access information reaches the second threshold.

120. The network device of claim 119, wherein, One or more of the first service, the first threshold, and the second threshold are agreed upon by the protocol or configured by the network device.

121. A chip comprising: A processor for retrieving and running a computer program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1 to 20.

122. A chip comprising: A processor for retrieving and running a computer program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 21 to 40.

123. A computer-readable storage medium for storing a computer program that, when run by a device, causes the device to perform the method as claimed in any one of claims 1 to 20.

124. A computer-readable storage medium for storing a computer program that, when run by a device, causes the device to perform the method as claimed in any one of claims 21 to 40.

125. A computer program product comprising computer program instructions that cause a computer to perform the method as claimed in any one of claims 1 to 20.

126. A computer program product comprising computer program instructions that cause a computer to perform the method as claimed in any one of claims 21 to 40.

127. A computer program that causes a computer to perform the method as claimed in any one of claims 1 to 20.

128. A computer program that causes a computer to perform the method as claimed in any one of claims 21 to 40.

129. A communication system, comprising: A terminal device for performing the method as described in any one of claims 1 to 20; A network device for performing the method as described in any one of claims 21 to 40.

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