Random access method, communication node, and storage medium

Abstract

The present application provides a random access method, a communication node, and a storage medium. The method comprises: executing at least one of a first random access procedure and a second random access procedure. The first random access procedure comprises a first-type message set. The first-type message set comprises at least one first-type message, and the at least one first-type message adopts a first processing mode. The second random access procedure comprises a second-type message set. The second-type message set comprises at least one second-type message, and the at least one second-type message adopts the first processing mode or a second processing mode.

Description

A random access method, communication node and storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on October 24, 2023, with application number 202311390824.X and invention name “A random access method, communication node and storage medium”. The entire contents of the Chinese patent application are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of communication technology, for example, to a random access method, a communication node and a storage medium. Background Art

[0004] In the fifth-generation mobile communication system (5G) wireless network (New Radio, NR), during the random access process, a terminal can only select a random access channel (PRACH) resource corresponding to a beam direction to send a random access signal to initiate the random access process. This can significantly limit the performance of the terminal device. When PRACH resources are limited or too many terminals select the same beam direction, the random access signal sequences in the same beam direction can collide, which can prevent the terminal device from successfully accessing the system or increase the terminal device's access delay.

[0005] Typical application scenarios for the sixth-generation mobile communication system (6G), represented by smart cities, smart transportation, and smart homes, involve a large number of terminal devices with vastly varying capabilities. This leads to increased demands for extremely low latency, extremely high reliability, ultra-large bandwidth, and massive access capabilities. In the 6G era, the variety of terminal devices accessing the system will be enormous. Adopting NR as an access solution will significantly reduce the success rate of terminal devices accessing the communication system, leading to significantly increased access latency. It will also lead to significant system resource overhead for random access, severely impacting the spectrum efficiency of the communication system.

[0006] Summary of the Invention

[0007] The present application provides a random access method, a communication node, and a storage medium.

[0008] An embodiment of the present application provides a random access method, including at least one of a first random access procedure and a second random access procedure; the first random access procedure includes a first-category message set, the first-category message set includes at least one first-category message, and the at least one first-category message uses a first processing manner; the second random access procedure includes a second-category message set, the second-category message set includes at least one second-category message, and the at least one second-category message uses the first processing manner or the second processing manner.

[0009] An embodiment of the present application further provides a communication node, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned random access method when executing the program.

[0010] An embodiment of the present application further provides a storage medium, wherein a computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the above-mentioned random access method is implemented.

[0011] With respect to the above embodiments and other aspects of the present application and their implementation, further description is provided in the accompanying drawings, detailed description and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] FIG1 is a flowchart of a random access method provided by an embodiment;

[0013] FIG2 is a schematic structural diagram of a random access device provided by an embodiment;

[0014] FIG3 is a schematic diagram of the hardware structure of a communication node provided by an embodiment. DETAILED DESCRIPTION

[0015] To make the purpose, technical solutions and advantages of this application more clear, the embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of this application can be combined with each other in any way.

[0016] The steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions. Also, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be performed in an order different from that shown here.

[0017] The large-scale commercial deployment of fifth-generation mobile communication systems (5G) wireless networks is accelerating the digital, networked, and intelligent transformation of the economy and society, propelling the network into a new era of the Internet of Everything. Rapidly emerging application demands in smart cities, smart transportation, and smart industrial production are driving the trend toward differentiated network device capabilities, diversified network functions, and intelligent network management and control, further driving the arrival of the sixth-generation mobile communication system, characterized by the intelligent interconnection of all things. Typical 6G application scenarios, such as smart cities, smart transportation, and smart homes, involve a large number of intelligent automation devices with highly differentiated capabilities. These devices place increasingly stringent communication demands for extremely low latency, high reliability, ultra-large bandwidth, and massive access. Intelligent automation applications also place high demands on high-precision and high-resolution perception capabilities. On the one hand, the surge in the number of wireless communication and sensing devices is exacerbating the contradiction between the endless growth of service demands and the limited availability of wireless resources and computing power. On the other hand, realizing the 6G vision requires closed-loop information flow processing, encompassing the acquisition of environmental perception information, information exchange and sharing, intelligent information processing, and the layer-by-layer distribution of control information (including control information for the communication network and control instructions for application execution devices). The existing wireless network architecture and related technologies are no longer able to meet the emerging application demands in the post-5G / 6G era. There is an urgent need to develop new network architectures and enabling technologies that can efficiently utilize resources and intelligently adapt to differentiated applications.

[0018] The rise of artificial intelligence (AI) technologies, represented by deep learning, reinforcement learning, and distributed learning, has had a profound and extensive impact on various fields, including communication network optimization, intelligent perception, and control applications. This has significantly promoted the potential for deep convergence in the communication, perception, and computing domains. Based on this, if 6G, enabled by intelligent computing, achieves the symbiotic integration of communication and perception capabilities, it will endow 6G networks with the ability to intelligently perceive the physical world and mirror the digital world at all times and in all places. The vast number of new intelligent terminals connected will rely on ever-increasing computing power to learn, communicate, cooperate, and compete, enabling the network to self-learn, operate, and maintain itself, ultimately realizing the vision of a 6G network that integrates perception and computing.

[0019] Figure 1 is a flowchart of a random access method provided by an embodiment. As shown in Figure 1, the method provided by this embodiment can be applied to a communication node, which may include a terminal device, a base station or other network device, and includes step 110.

[0020] In step 110, at least one of a first random access procedure and a second random access procedure is performed; the first random access procedure includes a first-category message set, the first-category message set includes at least one first-category message, and the at least one first-category message adopts a first processing manner; the second random access procedure includes a second-category message set, the second-category message set includes at least one second-category message, and the at least one second-category message adopts the first processing manner or the second processing manner.

[0021] In this embodiment, the first category message set may include Msg1, Msg2, Msg3 and Msg4 in the NR system, and the first category message set may also include messages such as Msg1, Msg2, Msg3 and Msg4 in other systems. A first category message may be any one of Msg1, Msg2, Msg3, and Msg4, and multiple first category messages constitute the first category message set. Msg1 is a random access signal, Msg2 is the response information of the second communication node (network device or base station) sending Msg1 to the first communication node (terminal device), Msg3 is an uplink message, and Msg4 is the response information of the second communication node (network device or base station) sending Msg3 to the first communication node (terminal device). In this embodiment, the contents of the first category message and the second category message may be the same or different, and the processing methods used by the first category message and the second category message may be the same or different. The first category message may adopt the first processing method, and the second category message may adopt the first processing method or the second processing method.

[0022] The random access process includes sending or receiving multiple messages between the first communication node and the second communication node, and its functions include at least one of the following: being used to achieve uplink synchronization between the first communication node and the second communication node; achieving the transition from the Radio Resource Control (RRC) idle state to the RRC connected state; mobility management in the RRC connected state of the first communication node, such as achieving uplink synchronization with the neighboring cell during the switching process; when the second communication node detects that the first communication node is out of uplink, it triggers the first communication node through a downlink instruction to achieve uplink resynchronization; when the first communication node detects that the downlink is out of step, it achieves resynchronization through uplink random access; when the first communication node is not scheduled in time in the connected state, random access is initiated to achieve resource competition when a certain number of times exceeds a threshold; obtaining system information (SI); and synchronization recovery after beam failure.

[0023] The random access procedure includes the following steps.

[0024] Step 1: The first communication node receives the synchronization signal / physical broadcast channel block (SSB) sent by the second communication node. Since the SSB can be sent in a multi-beam manner, that is, the SSB information can be sent through different beam directions; then, the first communication node can select the beam direction corresponding to one of the SSBs based on the received SSB, and further select the random access channel (PRACH) resource corresponding to the beam direction, and send a random access signal (Msg1) on the above-mentioned PRACH resource to start the random access process. Among them, the SSB includes the primary synchronization signal (PSS), the secondary synchronization signal (SSS) and the physical broadcast channel (PBCH).

[0025] Step 2: The second communication node sends a response message, Msg2, to the first communication node. The scheduling information of Msg2 is carried in the downlink control information (DCI) in the Physical Downlink Control Channel (PDCCH), and Msg2 is carried in the Physical Downlink Shared Channel (PDSCH).

[0026] Msg2 includes one or more information packets, wherein the information packet includes at least one random access signal index information. The random access signal index information is used to indicate that the information packet is a response to the random access signal of the index information.

[0027] After sending Msg1, the first communication node will detect the PDCCH containing the scheduling information of Msg2 sent by the second communication node within a time window, and then detect Msg2 based on the scheduling information carried by the DCI in the detected PDCCH.

[0028] Step 3: The first communication node sends a Msg3 message on the physical uplink shared channel (PUSCH) indicated by the PUSCH according to the resource allocation information of the PUSCH in Msg2.

[0029] Step 4: After receiving the Msg3 message sent by the terminal device, the second communication node sends a response message Msg4 to the terminal device. The Msg4 is carried by the PDSCH scheduled by the PDCCH.

[0030] The first communication node may be a terminal, and the second communication node may be a base station.

[0031] In this embodiment, a message / signaling / channel can be processed in at least two ways, defined as a first processing way and a second processing way. The processing way may include at least one of the following: a sending way; a receiving way; a resource configuration way; a sending format; a scheduling way; a bearer information format; or a transmission configuration. The message / signaling / channel involved in steps 1 through 4 of the first random access procedure (i.e., a first-type message) is processed in the first way; the message / signaling / channel involved in steps 1 through 4 of the second random access procedure (i.e., a second-type message) is processed in either the first or second way.

[0032] In this embodiment, the communication node accesses the communication system by executing the first random access procedure and / or the second random access procedure, and the second type of message in the second random access procedure adopts the first processing method or the second processing method, which can greatly improve the success rate of the communication node accessing the communication system.

[0033] In one embodiment, the first processing mode is a configurable processing mode, and the processing mode includes at least one of the following: a method for generating a message or signaling or channel; a method for sending a message or signaling or channel; a method for receiving a message or signaling or channel; a format of information carried by the message or signaling or channel; a content of information carried by the message or signaling or channel; and a transmission configuration of the message or signaling or channel.

[0034] In this embodiment, the configurable processing mode may include one configuration or multiple configurations. When there are multiple configurations, the configurable processing mode to be used may be indicated by indication information, or determined by condition triggering.

[0035] The first processing method may include at least one of the following: the generation method of the message or signaling or channel adopts a preconfigured method; the sending method of the message or signaling or channel adopts a preconfigured method; the receiving method of the message or signaling or channel adopts a preconfigured method; the format of the bearer information of the message or signaling or channel adopts a preconfigured method; the content of the bearer information of the message or signaling or channel adopts a preconfigured method; the transmission configuration of the message or signaling or channel adopts a preconfigured method.

[0036] In this embodiment, the sending mode may include the sending antenna configuration, for example, single-antenna sending and multi-antenna sending; the receiving mode may include the receiving antenna configuration, for example, single-antenna receiving and multi-antenna receiving; the information carried by the message / signaling / channel corresponding to different information-carrying formats has different functions or the application scenarios of the information carried by the corresponding message / signaling / channel are different.

[0037] In one embodiment, the second processing mode is a processing mode determined by at least one of the first communication node and the second communication node, and the processing mode includes at least one of the following: a method for generating a message or signaling or a channel; a method for sending a message or signaling or a channel; a method for receiving a message or signaling or a channel; a format of information carried by the message or signaling or the channel; a content of information carried by the message or signaling or the channel; and a transmission configuration of the message or signaling or the channel.

[0038] In this embodiment, the second processing method includes at least one of the following: a method for generating a message / signaling / channel; a method for sending a message / signaling / channel; a method for receiving a message / signaling / channel; a format of the information carried by the message / signaling / channel; a content of the information carried by the message / signaling / channel; and a transmission configuration of the message / signaling / channel.

[0039] A transmission configuration set includes at least one transmission configuration; a transmission configuration includes at least the following configuration information: time domain resources and / or frequency domain resources. It should be understood that a transmission configuration can also be named a transmission configuration or a resource configuration, etc., which is not limited in this application.

[0040] In some embodiments, a transmission configuration corresponds to a sending mode and / or receiving mode, and the configuration information in the transmission configuration is the configuration information required to support the sending mode and / or receiving mode.

[0041] In some embodiments, the transmission configuration may further include at least one of the following configuration information: reference signal resources, discrete Fourier transformation (DFT) vectors, signal multiplexing mode, transmitter spatial filter, transmitter coding, transmitter-encoded codewords, transmitter antenna port, transmitter antenna weight vector, transmitter antenna weight matrix, receiver spatial filter, receiver coding, receiver-encoded codewords, receiver antenna port, receiver antenna weight vector, receiver antenna weight matrix, angle of departure (AOD), zenith angle of departure (ZOD), angle of arrival (AOA), zenith angle of arrival (ZOA), a vector or vector index constructed from at least one of AOA, AOD, ZOD, or ZOA, and a codeword in a codebook. The reference signal resources include at least one of time domain resources, frequency domain resources, code domain resources, and port information of the reference signal; and the reference signal includes a sounding reference signal (SRS). The signal multiplexing method includes at least one of the following: space division multiplexing; time division multiplexing; frequency division multiplexing.

[0042] In some embodiments, the transmission configuration may also include at least one of the following configuration information: transmit beam, transmit beam group, transmit beam index information, transmit beam group index, transmit beam pair, transmit beam number information, transmit beam direction information, receive beam, receive beam group, receive beam index information, receive beam group index, receive beam pair, receive beam index information, receive beam number information, and receive beam direction information.

[0043] In some embodiments, the transmission configuration may further include at least one of the following configuration information: a spatial filter, a spatial receive parameter, and a spatial transmit parameter. The spatial filter may be at least one of the following: a DFT vector, a precoding vector, a DFT matrix, a precoding matrix, a vector formed by a linear combination of multiple DFTs, or a vector formed by a linear combination of multiple precoding vectors.

[0044] It should be understood that the content included in the above transmission configuration is only an example. As actual needs change and network architecture evolves, the transmission configuration may also include other possible content, and the embodiments of the present application do not limit this.

[0045] In this embodiment, the first communication node may include a terminal, and the second communication node may include a base station or other network equipment.

[0046] The determination method of the second processing method includes at least one of the following: the generation method of the message / signaling / channel is determined by the first communication node or determined by the second communication node or determined jointly by the first communication node and the second communication node; the sending method of the message / signaling / channel is determined by the first communication node or determined by the second communication node or determined jointly by the first communication node and the second communication node; the receiving method of the message / signaling / channel is determined by the first communication node or determined by the second communication node or determined jointly by the first communication node and the second communication node; the format of the bearer information of the message / signaling / channel is determined by the first communication node or determined by the second communication node or determined jointly by the first communication node and the second communication node; the content of the bearer information of the message / signaling / channel is determined by the first communication node or determined by the second communication node or determined jointly by the first communication node and the second communication node; the transmission configuration of the message / signaling / channel is determined by the first communication node or determined by the second communication node or determined jointly by the first communication node and the second communication node.

[0047] In some embodiments, the first communication node and / or the second communication node may further determine the second processing mode of the message / signaling / channel based on a first reference information set. The first reference information set includes at least one of the following: configuration information of a downlink reference signal / channel; configuration information of an uplink reference signal / channel; configuration information of a downlink signal / channel; configuration information of an uplink signal / channel; measurement or detection information of a downlink reference signal / channel; measurement or detection information of an uplink reference signal / channel; measurement or detection information of an uplink signal / channel; or measurement or detection information of a downlink signal / channel.

[0048] In some embodiments, the first communication node and / or the second communication node may further determine a second processing mode for a message / signaling / channel through a first functional module. The first functional module may also be named a learning module, an artificial intelligence module (AI), a configuration estimation module, or a resource allocation module, etc., and the embodiments of the present application are not limited thereto. As an example, the output information of the first functional module may include a second processing mode for one or more messages / signalings / channels. When multiple second processing modes for messages / signalings / channels are included, one second processing mode is selected as the second processing mode for the message / signaling / channel.

[0049] In some embodiments, artificial intelligence (AI) includes self-learning devices, components, software, and modules such as machine learning (ML), deep learning, reinforcement learning, transfer learning, deep reinforcement learning, and meta-learning. In some embodiments, artificial intelligence is implemented through an artificial intelligence network (or neural network), which includes multiple layers, each layer including at least one node. In one example, the neural network includes an input layer, an output layer, and at least one hidden layer, wherein each layer of the neural network includes, but is not limited to, at least one of a fully connected layer, a dense layer, a convolutional layer, a transposed convolutional layer, a direct connection layer, an activation function, a normalization layer, and a pooling layer. In some embodiments, each layer of the neural network may include a sub-neural network, such as a residual network block (Residual Network Block or ResNet Block), a dense network (DenseNet Block), a recurrent neural network (RNN), etc. The artificial intelligence network includes a neural network model and / or neural network parameters corresponding to the neural network model, wherein the neural network model can be simply referred to as the network model, and the neural network parameters can be simply referred to as the network parameters. A network model defines the network architecture, including the number of layers, the size of each layer, the activation function, the connectivity, the convolution kernel and stride, and the convolution type (e.g., 1D convolution, 2D convolution, 3D convolution, atrous convolution, transposed convolution, separable convolution, grouped convolution, and dilated convolution). Network parameters are the weights and / or biases of each layer in the network model and their values. A network model can correspond to multiple different sets of neural network parameter values ​​to suit different scenarios. These values ​​can be obtained through offline and / or online training. A neural network model can correspond to multiple different neural network parameter values.

[0050] In one embodiment, the second category of messages includes a second category of messages A and a second category of messages B, and the processing method of the second category of messages A includes at least one of the following: the same processing method as the second category of messages B; determined by the processing method of the second category of messages B; indicated by the second category of messages B; wherein the second category of messages B are one or more second category messages in the second category of messages set and before the second category of messages A.

[0051] In this embodiment, the second-category message A and the second-category message B are messages in the second-category message set. The second-category message B is located before the second-category message A in the second-category message set. The second-category message B may include at least one second-category message.

[0052] The sending time of the second type message B is before the sending time of the second type message A or the receiving time of the second type message B is before the receiving time of the second type message A.

[0053] In one embodiment, the second type message A and the second type message B are uplink messages or downlink messages.

[0054] In this embodiment, a message sent by a first communication node to a second communication node is called an uplink message; a message sent by a second communication node to a first communication node is called a downlink message. For example, a message sent by a terminal device to a base station is called an uplink message; a message sent by a base station to a terminal device is called a downlink message.

[0055] In one embodiment, the processing method of the second category of messages includes at least one of the following: the same as the processing method of the third category of messages or signaling or channels; determined by the processing method of the third category of messages or signaling or channels; indicated by the third category of messages or signaling or channels; wherein the third category of messages or signaling or channels are sent or received before the second category of messages.

[0056] In one embodiment, the processing method of the second category message includes at least one of the following: the same as the processing method of the fourth category message or signaling or channel; determined by the processing method of the fourth category message or signaling or channel; indicated by the fourth category message or signaling or channel.

[0057] Among them, the fourth type of message includes at least one of the following: first type system information; message or signaling or channel carrying first type system information; message or signaling or channel carrying scheduling information of first type system information; second type system information; message or signaling or channel carrying second type system information; message or signaling or channel carrying scheduling information of second type system information; system synchronization information.

[0058] The system message includes at least one of the following: a first type of system message; a second type of system message.

[0059] In this embodiment, the first type of system information can be a master information block (MIB), and the channel of the MIB can be a physical broadcast channel; the second type of system information can be a system information block (SIB), and the channel of the SIB can be a physical downlink shared channel; the channel of the SIB scheduling information can be a physical downlink control channel.

[0060] The MIB is the system's primary information block, typically broadcast periodically by the primary node to all secondary nodes. The MIB contains basic system configuration information, such as system bandwidth and frame structure. Secondary nodes can parse the MIB to obtain key system parameters, enabling them to correctly access the system.

[0061] The SIB is a block that carries additional system information. Compared to the MIB, the SIB contains more detailed system information, such as cell parameters, neighbor information, and system broadcast messages. The information contained in the SIB is relatively fixed but changes over time, so the second node needs to regularly obtain the latest SIB information.

[0062] In some embodiments, the system message includes at least one first-type system message, and information carried by each first-type system message is independently configured or different.

[0063] In some embodiments, the system message includes at least one second-type system message, and information carried by each second-type system message is independently configured or different.

[0064] Embodiment 1: In a wireless communication system, a message / signaling / channel can be processed in at least two ways, which are defined as a first processing way and a second processing way, wherein the first processing way includes at least one of the following: a message / signaling / channel is generated in a preconfigured way; a message / signaling / channel is sent in a preconfigured way; a message / signaling / channel is received in a preconfigured way; a format of information carried by the message / signaling / channel is preconfigured; a content of information carried by the message / signaling / channel is preconfigured; a transmission configuration of the message / signaling / channel is preconfigured; and a second processing way is determined including at least one of the following: a message / signaling / channel is generated in a preconfigured way; a message / signaling / channel is sent in a preconfigured way; a message / signaling / channel is received in a preconfigured way; a format of information carried by the message / signaling / channel is preconfigured; a content of information carried by the message / signaling / channel is preconfigured; a transmission configuration of the message / signaling / channel is preconfigured; and The signaling / channel generation method is determined by the terminal or by the base station or jointly by the base station and the terminal; the message / signaling / channel transmission method is determined by the terminal or by the base station or jointly by the base station and the terminal; the message / signaling / channel reception method is determined by the terminal or by the base station or jointly by the base station and the terminal; the format of the bearer information of the message / signaling / channel is determined by the terminal or by the base station or jointly by the base station and the terminal; the content of the bearer information of the message / signaling / channel is determined by the terminal or by the base station or jointly by the base station and the terminal; the transmission configuration of the message / signaling / channel is determined by the terminal or by the base station or jointly by the base station and the terminal.

[0065] In this embodiment, the wireless communication system is configured with two access procedures: a first access procedure and a second access procedure. Messages / signaling / channels in the first access procedure are processed in the first manner; messages / signaling / channels in the second access procedure are processed in the same manner as the fourth type of messages / signaling / channels.

[0066] Among them, the fourth type of message is at least one of the following: Master Information Block (MIB): message / signaling / channel carrying the master information block; message / signaling / channel carrying the scheduling information of the master information block; System Information Block (SIB): message / signaling / channel carrying the system information block; message / signaling / channel carrying the scheduling information of the system information block; system synchronization information.

[0067] In this embodiment, the message / signaling / channel carrying the main information block is the physical broadcast channel (PBCH); the message / signaling / channel carrying the system information block is the physical downlink shared channel (PDSCH); and the message / signaling / channel carrying the scheduling information of the system information block is the physical downlink control channel (PDCCH).

[0068] Example 2: Based on Example 1, two access procedures are configured in the wireless communication system: a first access procedure and a second access procedure. Messages / signaling / channels in the first access procedure are processed in the first manner; messages / signaling / channels in the second access procedure are processed in the same manner as the most recently detected fourth-category messages / signaling / channels.

[0069] Among them, the fourth type of message is at least one of the following: Master Information Block (MIB): message / signaling / channel carrying the master information block; message / signaling / channel carrying the scheduling information of the master information block; System Information Block (SIB): message / signaling / channel carrying the system information block; message / signaling / channel carrying the scheduling information of the system information block; system synchronization information.

[0070] In this embodiment, the most recently detected fourth-category message / signaling / channel means the fourth-category message / signaling / channel that is closest to the second access process.

[0071] Example 3: Based on Example 1, two access procedures are configured in the wireless communication system, namely a first access procedure and a second access procedure. Messages / signaling / channels in the first access procedure are processed using the first processing method; messages / signaling / channels in the second access procedure are processed using the fourth type of messages / signaling / channels.

[0072] Among them, the fourth type of message is at least one of the following: Master Information Block (MIB): message / signaling / channel carrying the master information block; message / signaling / channel carrying the scheduling information of the master information block; System Information Block (SIB): message / signaling / channel carrying the system information block; message / signaling / channel carrying the scheduling information of the system information block; system synchronization information.

[0073] Example 4: Based on Example 1, the wireless communication system is configured with two access procedures, namely a first access procedure and a second access procedure. Messages / signaling / channels in the first access procedure are processed in the first manner. Messages / signaling / channels in the second access procedure are processed in the manner corresponding to the most recently detected fourth-category message / signaling / channel indication.

[0074] Among them, the fourth type of message is at least one of the following: Master Information Block (MIB): message / signaling / channel carrying the master information block; message / signaling / channel carrying the scheduling information of the master information block; System Information Block (SIB): message / signaling / channel carrying the system information block; message / signaling / channel carrying the scheduling information of the system information block; system synchronization information.

[0075] In this embodiment, the most recently detected fourth-category message / signaling / channel means the fourth-category message / signaling / channel that is closest to the second access process.

[0076] In one embodiment, when executing the second random access procedure, switching to the first random access procedure occurs when a first condition is met; the first condition includes at least one of the following: the number of execution failures of the second random access procedure is greater than or equal to a first threshold, where the first threshold is an integer greater than or equal to 1; the number of transmission failures or reception failures of a second-type message during the execution of the second random access procedure is greater than or equal to a second threshold, where the second threshold is an integer greater than or equal to 1.

[0077] In this embodiment, if the number of execution failures of the second random access procedure is greater than or equal to the first threshold and / or the number of transmission failures or reception failures of a second-type message is greater than or equal to the second threshold during the execution of the second random access procedure, the first random access procedure is switched to be executed.

[0078] In one embodiment, the second communication node receives a fifth type of message sent by the first communication node, and the fifth type of message includes at least one of the following: indication information of the failure of the second random access process; the number of failures of the second random access process; the number of retransmissions of the second type of message in the second random access process when the sending or receiving fails; resource configuration information used when the sending or receiving of the second type of message in the second random access process fails.

[0079] In this embodiment, the number of times the second random access procedure fails may be the number of first transmissions or the sum of the number of first transmissions and the number of retransmissions.

[0080] The resource configuration information may include at least one of the following: time domain resources; frequency domain resources; transmitted sequence information; used precoding information; used code information.

[0081] In one embodiment, when the second random access procedure is used, the number of times the second type of message is sent, received, or retransmitted is reconfigured when the second condition is met.

[0082] The second condition includes at least one of the following: the number of failed executions of the second random access procedure is greater than or equal to a third threshold, and the third threshold is an integer greater than or equal to 1; the number of failed transmissions of the second type of message is greater than or equal to the third threshold, and the third threshold is an integer greater than or equal to 1; the number of failed receptions of the second type of message is greater than or equal to the third threshold, and the third threshold is an integer greater than or equal to 1.

[0083] In this embodiment, during execution of the second random access procedure, if the number of execution failures of the second random access procedure is greater than or equal to a third threshold and / or the number of sending failures or the number of receiving failures of the second-type message is greater than or equal to the third threshold, the number of sending, receiving, or retransmission times of the second-type message is reconfigured.

[0084] In some embodiments, the first type of message set in the first access process includes at least one of the following: access message 1, Msg1, a control channel carrying Msg2 scheduling information; a control channel carrying Msg2 retransmission scheduling information; access message 2, Msg2; a control channel carrying Msg3 scheduling information; a control channel carrying Msg3 retransmission scheduling information; access message 3, Msg3; a control channel carrying Msg4 scheduling information; a control channel carrying Msg4 retransmission scheduling information; access message 4, Msg4.

[0085] The second type of message set in the second access process includes at least one of the following: access message 1, Msg1, a control channel carrying Msg2 scheduling information; a control channel carrying Msg2 retransmission scheduling information; access message 2, Msg2; a control channel carrying Msg3 scheduling information; a control channel carrying Msg3 retransmission scheduling information; access message 3, Msg3; a control channel carrying Msg4 scheduling information; a control channel carrying Msg4 retransmission scheduling information; access message 4, Msg4.

[0086] In one embodiment, in the second random access procedure, the processing manner adopted by the first physical downlink control channel is the same as the processing manner adopted by the second physical downlink control channel.

[0087] The first physical downlink control channel includes at least one of the following: a control channel carrying Msg2 scheduling information; a control channel carrying Msg2 retransmission scheduling information; a control channel carrying Msg3 scheduling information; a control channel carrying Msg3 retransmission scheduling information; a control channel carrying Msg4 scheduling information; a control channel carrying Msg4 retransmission scheduling information; the second physical downlink control channel includes a control channel before the second access process is executed.

[0088] Among them, Msg1 is a random access signal, Msg2 is the response information of the second communication node sending Msg1 to the first communication node, Msg3 is an uplink message, and Msg4 is the response information of the second communication node sending Msg3 to the first communication node.

[0089] In one embodiment, when the first physical downlink control channel adopts the second processing mode, at least one of the following of the first physical downlink control channel is determined by the second processing mode: information carried in the first physical downlink control channel; demodulation reference signal configuration in the first physical downlink control channel; coding mode of the first physical downlink control channel; modulation mode of the first physical downlink control channel; coding mode and modulation mode of the first physical downlink control channel; and code rate of the first physical downlink control channel.

[0090] In one embodiment, the processing method adopted for Msg2 in the second random access process is determined by at least one of the following: determining the processing method of Msg2 according to the system load size; being the same as the processing method of the control channel carrying Msg2 scheduling information; being the same as the processing method of the control channel carrying Msg2 retransmission scheduling information; being indicated by the control channel carrying Msg2 scheduling information; being indicated by the control channel carrying Msg2 retransmission scheduling information; when the Msg2 resources indicated by multiple control channels carrying Msg2 scheduling information are the same or the resources overlap or the resources partially overlap, the Msg2 adopts the first processing method; when the Msg2 resources indicated by multiple control channels carrying Msg2 retransmission scheduling information are the same or the resources overlap or the resources partially overlap, the Msg2 adopts the first processing method.

[0091] Among them, Msg1 is a random access signal, and Msg2 is the response information of Msg1 sent by the second communication node to the first communication node.

[0092] In one embodiment, the processing method adopted for Msg3 in the second random access process is determined by at least one of the following: determining the processing method of Msg3 according to the system load size; the same as the processing method of the control channel carrying Msg3 scheduling information; the same as the processing method of the control channel carrying Msg3 retransmission scheduling information; control channel indication carrying Msg3 scheduling information; control channel indication carrying Msg3 retransmission scheduling information; when the Msg3 resources indicated by multiple control channels carrying Msg3 scheduling information are the same or the resources overlap or part of the resources overlap, the Msg3 adopts the first processing method; when the Msg3 resources indicated by multiple control channels carrying Msg3 retransmission scheduling information are the same or the resources overlap or part of the resources overlap, the Msg3 adopts the first processing method.

[0093] Msg3 is an uplink message. In one embodiment, the processing method adopted for Msg4 in the second random access process is determined by at least one of the following: determining the processing method for Msg4 according to the system load size; the same processing method as the control channel carrying Msg4 scheduling information; the same processing method as the control channel carrying Msg4 retransmission scheduling information; a control channel indication carrying Msg4 scheduling information; a control channel indication carrying Msg4 retransmission scheduling information; when the Msg4 resources indicated by multiple control channels carrying Msg4 scheduling information are the same, or the resources overlap, or the resources partially overlap, the Msg4 adopts the first processing method; when the Msg4 resources indicated by multiple control channels carrying Msg4 retransmission scheduling information are the same, or the resources overlap, or the resources partially overlap, the Msg4 adopts the first processing method.

[0094] Among them, Msg3 is an uplink message, and Msg4 is the response information of Msg3 sent by the second communication node to the first communication node.

[0095] In one embodiment, in the second random access procedure, a second type message sent or received later is processed in the same manner as a second type message sent or received earlier.

[0096] Among them, at least one of the second-type messages in the second access process includes: a first access message, Msg1; a control channel carrying Msg2 scheduling information; a control channel carrying Msg2 retransmission scheduling information; a second access message, Msg2; a control channel carrying Msg3 scheduling information; a control channel carrying Msg3 retransmission scheduling information; a third access message, Msg3; a control channel carrying Msg4 scheduling information; a control channel carrying Msg4 retransmission scheduling information; and a fourth access message, Msg4.

[0097] Among them, Msg1 is a random access signal, Msg2 is the response information of the second communication node sending Msg1 to the first communication node, Msg3 is an uplink message, and Msg4 is the response information of the second communication node sending Msg3 to the first communication node.

[0098] Example 5: In a wireless communication system, a random access process includes the following steps.

[0099] Step 1: The terminal receives the synchronization signal / physical broadcast channel block (SSB) sent by the base station. Since the SSB can be sent in a multi-beam manner, that is, the SSB information can be sent through different beam directions; then, the terminal can select the beam direction corresponding to one of the SSBs based on the received SSB, and further select the random access channel (PRACH) resource corresponding to the beam direction, and send a random access signal (Msg1) on the above PRACH resource to start the random access process. Among them, the SSB includes the primary synchronization signal (PSS), the secondary synchronization signal (SSS) and the physical broadcast channel (PBCH).

[0100] In this embodiment, the configuration information of the Msg1 is carried in the SIB and sent, and the configuration information of the Msg1 includes at least one of the following: the configuration of the random access signal; the configuration of the time-frequency resources occupied by the random access signal, that is, the configuration of the PRACH resources; and the timing advance (TA) configured for sending the random access signal.

[0101] Step 2: The base station sends a response message Msg2 to the terminal. The scheduling information of Msg2 is carried in the downlink control information (DCI) in the physical downlink control channel (PDCCH), and Msg2 is carried and sent in the PDSCH.

[0102] Msg2 includes one or more information packets, wherein the information packet includes at least one random access signal index information. The random access signal index information is used to indicate that the information packet is a response to the random access signal of the index information.

[0103] After sending Msg1, the terminal will detect the PDCCH containing the scheduling information of Msg2 sent by the base station within a time window, and then detect Msg2 based on the scheduling information carried by the DCI in the detected PDCCH.

[0104] Furthermore, the information packet of Msg2 also includes resource allocation information of the PUSCH channel, which is used for the terminal to transmit an uplink message. We call this uplink message Msg3.

[0105] Step 3: The terminal sends a Msg3 message on the PUSCH channel indicated in Msg2 according to the resource allocation information of the PUSCH channel, wherein Msg3 message includes the identification information of the terminal.

[0106] Step 4: After receiving the Msg3 message sent by the UE, the base station sends a response message to the terminal, namely Msg4. Msg4 is carried by the PDSCH scheduled by the PDCCH.

[0107] In a wireless communication system, a message / signaling / channel can be processed in at least two ways, which are defined as a first processing way and a second processing way, wherein the first processing way includes at least one of the following: a message / signaling / channel generation way adopts a preconfigured way; a message / signaling / channel transmission way adopts a preconfigured way; a message / signaling / channel reception way adopts a preconfigured way; a message / signaling / channel bearer information format adopts a preconfigured way; a message / signaling / channel bearer information content adopts a preconfigured way; a message / signaling / channel transmission configuration adopts a preconfigured way; a second processing way includes at least one of the following: a message / signaling / channel transmission way adopts a preconfigured way; ... The channel generation method is determined by the terminal or by the base station or jointly by the base station and the terminal; the message / signaling / channel transmission method is determined by the terminal or by the base station or jointly by the base station and the terminal; the message / signaling / channel reception method is determined by the terminal or by the base station or jointly by the base station and the terminal; the format of the bearer information of the message / signaling / channel is determined by the terminal or by the base station or jointly by the base station and the terminal; the content of the bearer information of the message / signaling / channel is determined by the terminal or by the base station or jointly by the base station and the terminal; the transmission configuration of the message / signaling / channel is determined by the terminal or by the base station or jointly by the base station and the terminal.

[0108] In this embodiment, two sets of random access procedures are configured in the wireless communication system: a first random access procedure and a second random access procedure. The messages / signaling / channels involved in steps 1 to 4 corresponding to the first random access procedure are processed in the first manner. The messages / signaling / channels involved in steps 1 to 4 corresponding to the second random access procedure are processed in the same manner as the fourth type of messages / signaling / channels.

[0109] Among them, the fourth type of message is at least one of the following: Master Information Block (MIB): message / signaling / channel carrying the master information block; message / signaling / channel carrying the scheduling information of the master information block; System Information Block (SIB): message / signaling / channel carrying the system information block; message / signaling / channel carrying the scheduling information of the system information block; system synchronization information.

[0110] In this embodiment, the message / signaling / channel carrying the master information block is a physical broadcast channel (PBCH).

[0111] In this embodiment, the message / signaling / channel carrying the system information block is a physical downlink shared channel (PDSCH).

[0112] In this embodiment, the message / signaling / channel carrying the scheduling information of the system information block is a physical downlink control channel (PDCCH).

[0113] Example 6: Based on Example 5, two sets of random access procedures are configured in the wireless communication system, namely a first random access procedure and a second random access procedure. The messages / signaling / channels involved in steps 1 to 4 corresponding to the first random access procedure adopt a first processing manner; the message / signaling / channels involved in steps 1 to 4 corresponding to the second random access procedure are processed in the following manner: in the second random access procedure, the processing manner of the first PDCCH is the same as the processing manner of the second PDCCH.

[0114] Among them, the first PDCCH is at least one of the following: a control channel carrying Msg2 scheduling information; a control channel carrying Msg2 retransmission scheduling information; a control channel carrying Msg3 scheduling information; a control channel carrying Msg3 retransmission scheduling information; a control channel carrying Msg4 scheduling information; a control channel carrying Msg4 retransmission scheduling information.

[0115] The second PDCCH is at least one of the following: a control channel before the second random access procedure.

[0116] In this embodiment, when the first PDCCH adopts the second processing method, at least one of the following of the PDCCH is determined by the second processing method: information carried in the first PDCCH; DM RS configuration in the first PDCCH; coding method of the first PDCCH; modulation method of the first PDCCH; coding and modulation method of the first PDCCH; and code rate of the first PDCCH.

[0117] Embodiment 7: Based on Embodiment 5, two sets of random access procedures are configured in the wireless communication system, namely a first random access procedure and a second random access procedure. The messages / signaling / channels involved in corresponding steps 1 to 4 in the first random access procedure adopt a first processing method; the message / signaling / channel processing methods involved in corresponding steps 1 to 4 in the second random access procedure include: the processing method adopted for Msg2 in the second random access procedure is determined by at least one of the following: determining the processing method of Msg2 according to the system load size; the same processing method as the control channel carrying Msg2 scheduling information; the same processing method as the control channel carrying Msg2 retransmission scheduling information; a control channel indication carrying Msg2 scheduling information; a control channel indication carrying Msg2 retransmission scheduling information; when the Msg2 resources indicated by multiple control channels carrying Msg2 scheduling information are the same, overlapped, or partially overlapped, the Msg2 adopts the first processing method; when the Msg2 resources indicated by multiple control channels carrying Msg2 retransmission scheduling information are the same, overlapped, or partially overlapped, the Msg2 adopts the first processing method.

[0118] Embodiment 8: Based on embodiment 5, two sets of random access procedures are configured in the wireless communication system, namely a first random access procedure and a second random access procedure. The messages / signaling / channels involved in corresponding steps 1 to 4 in the first random access procedure adopt the first processing method; the message / signaling / channel processing methods involved in corresponding steps 1 to 4 in the second random access procedure include: the processing method adopted by Msg3 in the second access procedure is determined by at least one of the following: determining the processing method of Msg3 according to the system load size; the same as the processing method of the control channel carrying Msg3 scheduling information; the same as the processing method of the control channel carrying Msg3 retransmission scheduling information; the control channel indication carrying Msg3 scheduling information; the control channel indication carrying Msg3 retransmission scheduling information; when the Msg3 resources indicated by multiple control channels carrying Msg3 scheduling information are the same, overlapped, or partially overlapped, the Msg3 adopts the first processing method; when the Msg3 resources indicated by multiple control channels carrying Msg3 retransmission scheduling information are the same, overlapped, or partially overlapped, the Msg3 adopts the first processing method.

[0119] Example 9: Based on Example 5, two sets of random access procedures are configured in the wireless communication system, namely a first random access procedure and a second random access procedure. The messages / signaling / channels involved in steps 1 to 4 corresponding to the first random access procedure adopt the first processing method. The processing methods of the messages / signaling / channels involved in steps 1 to 4 corresponding to the second random access procedure include: the processing method adopted for Msg4 in the second random access procedure is determined by at least one of the following: determining the processing method of Msg4 according to the system load size; the same processing method as the control channel carrying Msg4 scheduling information; the same processing method as the control channel carrying Msg4 retransmission scheduling information; a control channel indication carrying Msg4 scheduling information; a control channel indication carrying Msg4 retransmission scheduling information; when the Msg4 resources indicated by multiple control channels carrying Msg4 scheduling information are the same, overlap, or partially overlap, the Msg4 adopts the first processing method; when the Msg4 resources indicated by multiple control channels carrying Msg4 retransmission scheduling information are the same, overlap, or partially overlap, the Msg4 adopts the first processing method.

[0120] An embodiment of the present application also provides a random access device. Figure 2 is a schematic structural diagram of a random access device provided by an embodiment. As shown in Figure 2, the device can be configured in a communication node, including: an access module 110, configured to execute at least one of a first random access process and a second random access process; the first random access process includes a first type of message set, the first type of message set includes at least one first type of message, and the at least one first type of message adopts a first processing method; the second random access process includes a second type of message set, the second type of message set includes at least one second type of message, and the at least one second type of message adopts the first processing method or the second processing method.

[0121] The random access device of this embodiment connects the communication node to the communication system by executing the first random access procedure and / or the second random access procedure. The second type of message in the second random access procedure adopts the first processing method or the second processing method, which can greatly improve the success rate of the communication node accessing the communication system.

[0122] In one embodiment, the first processing mode is a configurable processing mode, and the processing mode includes at least one of the following: a method for generating a message or signaling or channel; a method for sending a message or signaling or channel; a method for receiving a message or signaling or channel; a format of information carried by the message or signaling or channel; a content of information carried by the message or signaling or channel; and a transmission configuration of the message or signaling or channel.

[0123] In one embodiment, the second processing mode is a processing mode determined by at least one of the first communication node and the second communication node, and the processing mode includes at least one of the following: a method for generating a message or signaling or a channel; a method for sending a message or signaling or a channel; a method for receiving a message or signaling or a channel; a format of information carried by the message or signaling or the channel; a content of information carried by the message or signaling or the channel; and a transmission configuration of the message or signaling or the channel.

[0124] In one embodiment, the second category of messages includes a second category of messages A and a second category of messages B, and the processing method of the second category of messages A includes at least one of the following: the same processing method as the second category of messages B; determined by the processing method of the second category of messages B; indicated by the second category of messages B; wherein the second category of messages B are one or more second category messages in the second category of messages set and before the second category of messages A.

[0125] In one embodiment, the second type message A and the second type message B are uplink messages or downlink messages.

[0126] In one embodiment, the processing method of the second category of messages includes at least one of the following: the same as the processing method of the third category of messages or signaling or channels; determined by the processing method of the third category of messages or signaling or channels; indicated by the third category of messages or signaling or channels; wherein the third category of messages / signaling / channels are sent or received before the second category of messages.

[0127] In one embodiment, the processing method of the second type of message includes at least one of the following: the same as the processing method of the fourth type of message or signaling or channel; determined by the processing method of the fourth type of message or signaling or channel; indicated by the fourth type of message or signaling or channel; wherein the fourth type of message includes at least one of the following: first type of system information; message or signaling or channel carrying first type of system information; message or signaling or channel carrying scheduling information of the first type of system information; second type of system information; message or signaling or channel carrying second type of system information; message or signaling or channel carrying scheduling information of the second type of system information; system synchronization information.

[0128] In one embodiment, when executing the second random access procedure, switching to the first random access procedure occurs when a first condition is met; the first condition includes at least one of the following: the number of execution failures of the second random access procedure is greater than or equal to a first threshold, where the first threshold is an integer greater than or equal to 1; the number of transmission failures or reception failures of a second-type message during the execution of the second random access procedure is greater than or equal to a second threshold, where the second threshold is an integer greater than or equal to 1.

[0129] In one embodiment, the second communication node receives a fifth type of message sent by the first communication node, and the fifth type of message includes at least one of the following: indication information of the failure of the second random access process; the number of failures of the second random access process; the number of retransmissions of the second type of message in the second random access process when the sending or receiving fails; resource configuration information used when the sending or receiving of the second type of message in the second random access process fails.

[0130] In one embodiment, when the second random access procedure is used, the number of times the second type of message is sent, received, or retransmitted is reconfigured when the second condition is met.

[0131] The second condition includes at least one of the following: the number of failed executions of the second random access procedure is greater than or equal to a third threshold, and the third threshold is an integer greater than or equal to 1; the number of failed transmissions of the second type of message is greater than or equal to the third threshold, and the third threshold is an integer greater than or equal to 1; the number of failed receptions of the second type of message is greater than or equal to the third threshold, and the third threshold is an integer greater than or equal to 1.

[0132] In one embodiment, in the second random access procedure, the processing manner adopted by the first physical downlink control channel is the same as the processing manner adopted by the second physical downlink control channel.

[0133] The first physical downlink control channel includes at least one of the following: a control channel carrying Msg2 scheduling information; a control channel carrying Msg2 retransmission scheduling information; a control channel carrying Msg3 scheduling information; a control channel carrying Msg3 retransmission scheduling information; a control channel carrying Msg4 scheduling information; a control channel carrying Msg4 retransmission scheduling information; the second physical downlink control channel includes a control channel before the second access process is executed.

[0134] In one embodiment, when the first physical downlink control channel adopts the second processing method, at least one of the following of the first physical downlink control channel is determined by the second processing method: information carried in the first physical downlink control channel; demodulation reference signal configuration in the first physical downlink control channel; coding method of the first physical downlink control channel; modulation method of the first physical downlink control channel; coding method and modulation method of the first physical downlink control channel; and code rate of the first physical downlink control channel.

[0135] In one embodiment, the processing method adopted for Msg2 in the second random access process is determined by at least one of the following: determining the processing method of Msg2 according to the system load size; being the same as the processing method of the control channel carrying Msg2 scheduling information; being the same as the processing method of the control channel carrying Msg2 retransmission scheduling information; being indicated by the control channel carrying Msg2 scheduling information; being indicated by the control channel carrying Msg2 retransmission scheduling information; when the Msg2 resources indicated by multiple control channels carrying Msg2 scheduling information are the same or the resources overlap or the resources partially overlap, the Msg2 adopts the first processing method; when the Msg2 resources indicated by multiple control channels carrying Msg2 retransmission scheduling information are the same or the resources overlap or the resources partially overlap, the Msg2 adopts the first processing method.

[0136] In one embodiment, the processing method adopted for Msg3 in the second random access process is determined by at least one of the following: determining the processing method of Msg3 according to the system load size; the same as the processing method of the control channel carrying Msg3 scheduling information; the same as the processing method of the control channel carrying Msg3 retransmission scheduling information; control channel indication carrying Msg3 scheduling information; control channel indication carrying Msg3 retransmission scheduling information; when the Msg3 resources indicated by multiple control channels carrying Msg3 scheduling information are the same or the resources overlap or part of the resources overlap, the Msg3 adopts the first processing method; when the Msg3 resources indicated by multiple control channels carrying Msg3 retransmission scheduling information are the same or the resources overlap or part of the resources overlap, the Msg3 adopts the first processing method.

[0137] In one embodiment, the processing method adopted for Msg4 in the second random access process is determined by at least one of the following: determining the processing method of Msg4 according to the system load size; the same as the processing method of the control channel carrying Msg4 scheduling information; the same as the processing method of the control channel carrying Msg4 retransmission scheduling information; a control channel indication carrying Msg4 scheduling information; a control channel indication carrying Msg4 retransmission scheduling information; when the Msg4 resources indicated by multiple control channels carrying Msg4 scheduling information are the same or the resources overlap or part of the resources overlap, the Msg4 adopts the first processing method; when the Msg4 resources indicated by multiple control channels carrying Msg4 retransmission scheduling information are the same or the resources overlap or part of the resources overlap, the Msg4 adopts the first processing method.

[0138] In one embodiment, in the second random access procedure, a second type message sent or received later is processed in the same manner as a second type message sent or received earlier.

[0139] Among them, at least one of the second-type messages in the second access process includes: a first access message, Msg1; a control channel carrying Msg2 scheduling information; a control channel carrying Msg2 retransmission scheduling information; a second access message, Msg2; a control channel carrying Msg3 scheduling information; a control channel carrying Msg3 retransmission scheduling information; a third access message, Msg3; a control channel carrying Msg4 scheduling information; a control channel carrying Msg4 retransmission scheduling information; and a fourth access message, Msg4.

[0140] The random access device proposed in this embodiment and the random access method proposed in the above embodiment belong to the same inventive concept. For technical details not fully described in this embodiment, please refer to any of the above embodiments. This embodiment has the same beneficial effects as the execution transmission method.

[0141] An embodiment of the present application also provides a communication node. Figure 3 is a schematic diagram of the hardware structure of a communication node provided by an embodiment. As shown in Figure 3, the communication node provided by the present application can be a base station, a terminal device and a network device, including a memory 520, a processor 510 and a computer program stored in the memory and executable on the processor. When the processor 510 executes the program, the above-mentioned random access method is implemented.

[0142] The communication node may also include a memory 520; the processor 510 in the communication node may be one or more, and Figure 3 takes one processor 510 as an example; the memory 520 is used to store one or more programs; the one or more programs are executed by the one or more processors 510, so that the one or more processors 510 implement the random access method as described in the embodiment of the present application.

[0143] The communication node further includes: a communication device 530 , an input device 540 and an output device 550 .

[0144] The processor 510, memory 520, communication device 530, input device 540 and output device 550 in the communication node may be connected via a bus or other means. FIG2 takes the bus connection as an example.

[0145] The input device 540 may be used to receive input digital or character information and generate key signal input related to user settings and function control of the terminal device. The output device 550 may include a display device such as a display screen.

[0146] The communication device 530 may include a receiver and a transmitter. The communication device 530 is configured to perform information transmission and reception communication according to the control of the processor 510.

[0147] The memory 520, as a computer-readable storage medium, can be configured to store software programs, computer executable programs, and modules, such as the program instructions / modules corresponding to the random access method described in the embodiments of the present application (for example, the access module 110 in the random access device). The memory 520 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created based on the use of the communication node, etc. In addition, the memory 520 may include a high-speed random access memory and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 520 may further include a memory remotely located relative to the processor 510, and these remote memories may be connected to the communication node via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0148] An embodiment of the present application further provides a storage medium, wherein the storage medium stores a computer program, and when the computer program is executed by a processor, the random access method described in any one of the embodiments of the present application is implemented.

[0149] The computer storage medium of the embodiment of the present application can adopt any combination of one or more computer-readable media.Computer-readable media can be computer-readable signal media or computer-readable storage media.Computer-readable storage media can be, for example, but not limited to: electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or devices, or any combination of the above.Examples of computer-readable storage media (non-exhaustive list) include: electrical connection with one or more wires, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM), flash memory, optical fibers, portable CD-ROMs, optical storage devices, magnetic storage devices, or any suitable combination of the above.Computer-readable storage media can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it.

[0150] A computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such a propagated data signal may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0151] The program code contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wire, optical cable, radio frequency (RF), etc., or any suitable combination of the foregoing.

[0152] The computer program code for performing the operations of the present application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and also conventional procedural programming languages ​​such as "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as an independent software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (e.g., using an Internet service provider to connect via the Internet).

[0153] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of any of the above-mentioned method embodiments and can achieve the same technical effects. To avoid repetition, it will not be described here.

[0154] An embodiment of the present application further provides a processing device, which is configured to execute the various processes of any of the above-mentioned method embodiments and can achieve the same technical effects. To avoid repetition, it will not be described here.

[0155] The above description is merely an exemplary embodiment of the present application and is not intended to limit the scope of protection of the present application.

[0156] It will be appreciated by those skilled in the art that the term user terminal covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser or a vehicle-mounted mobile station.

[0157] In general, various embodiments of the present application may be implemented in hardware or dedicated circuits, software, logic, or any combination thereof. For example, some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device, although the present application is not limited thereto.

[0158] Embodiments of the present application may be implemented by executing computer program instructions by a data processor of a mobile device, for example, in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

[0159] The block diagram of any logic flow in the drawings of this application may represent program steps, or may represent interconnected logic circuits, modules and functions, or may represent a combination of program steps and logic circuits, modules and functions. A computer program may be stored on a memory. The memory may be of any type suitable for the local technical environment and may be implemented using any suitable data storage technology, such as but not limited to read-only memory (ROM), random access memory (RAM), optical storage devices and systems (digital versatile discs (DVD) or compact disks (CD), etc.). Computer-readable media may include non-transitory storage media. The data processor may be of any type suitable for the local technical environment, such as but not limited to a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a programmable logic device (FPGA) and a processor based on a multi-core processor architecture.

[0160] The above description of exemplary embodiments of the present application has been provided by way of exemplary and non-limiting examples. However, various modifications and adaptations of the above embodiments will be apparent to those skilled in the art, when considered in conjunction with the accompanying drawings and the appended claims, without departing from the scope of the present application. Therefore, the proper scope of the present application will be determined by reference to the appended claims.

Claims

1. A random access method, the method comprising: Execute at least one of a first random access procedure and a second random access procedure; The first random access process includes a first type of message set, the first type of message set includes at least one first type of message, and the at least one first type of message adopts a first processing method; The second random access procedure includes a second type of message set, the second type of message set includes at least one second type of message, and the at least one second type of message adopts the first processing method or the second processing method.

2. The method according to claim 1, wherein: The first processing mode is a configurable processing mode, and the processing mode includes at least one of the following: How messages or signaling or channels are generated; The way messages or signaling or channels are sent; the manner in which messages or signalling or channels are received; The format of the information carried by the message or signaling or channel; The content of the message or signaling or the information carried by the channel; The transmission configuration of a message or signaling or channel.

3. The method according to claim 1, wherein: The second processing mode is a processing mode determined by at least one of the first communication node and the second communication node, and the processing mode includes at least one of the following: How messages or signaling or channels are generated; The way messages or signaling or channels are sent; the manner in which messages or signalling or channels are received; The format of the information carried by the message or signaling or channel; The content of the message or signaling or the information carried by the channel; The transmission configuration of a message or signaling or channel.

4. The method according to claim 1, wherein: The second-category messages include second-category messages A and second-category messages B, and the processing method of the second-category messages A includes at least one of the following: The same processing method as the second type of message B; Determined by the processing method of the second type of message B; Indicated by the second type of message B; The second-category message B is one or more second-category messages in the second-category message set and before the second-category message A.

5. The method according to claim 4, wherein: The second-category message A and the second-category message B are uplink messages or downlink messages.

6. The method according to claim 1, wherein: The processing method of the second type of message includes at least one of the following: The same processing method as the third type of message or signaling or channel; Determined by the way the third type of message or signaling or channel is handled; Indicated by a third type of message or signaling or channel; The third type of message or signaling or channel is sent or received before the second type of message set.

7. The method according to claim 1, wherein: The processing method of the second type of message includes at least one of the following: The processing method is the same as that of the fourth type of message or signaling or channel; Determined by the way the fourth type of message or signaling or channel is handled; Through the fourth type of message / signaling / channel indication; The fourth type of message includes at least one of the following: First type of system information; message or signaling or channel carrying the first type of system information; message or signaling or channel carrying scheduling information of the first type of system information; second type of system information; message or signaling or channel carrying the second type of system information; message or signaling or channel carrying scheduling information of the second type of system information; system synchronization information.

8. The method according to claim 1, wherein: When executing the second random access procedure, switching to the first random access procedure when a first condition is met; the first condition includes at least one of the following: The number of times the second random access procedure fails to be executed is greater than or equal to a first threshold, where the first threshold is an integer greater than or equal to 1; During the execution of the second random access procedure, the number of times that the second-type message fails to be sent or the number of times that the second-type message fails to be received is greater than or equal to a second threshold, and the second threshold is an integer greater than or equal to 1.

9. The method according to claim 8, wherein: The second communication node receives a fifth type of message sent by the first communication node, where the fifth type of message includes at least one of the following: Indication information indicating failure of the second random access procedure; The number of times the second random access procedure fails; The number of retransmissions of the second type of message due to failure to send or receive in the second random access process; Resource configuration information used when sending or receiving of the second type of message in the second random access procedure fails.

10. The method according to claim 1, wherein: When using the second random access procedure, reconfiguring the number of times the second type of message is sent, received, or retransmitted when the second condition is met; The second condition includes at least one of the following: The number of times the second random access procedure fails to be executed is greater than or equal to a third threshold, where the third threshold is an integer greater than or equal to 1; The number of failed transmissions of the second type of message is greater than or equal to a third threshold, where the third threshold is an integer greater than or equal to 1; The number of failed reception times of the second type of messages is greater than or equal to a third threshold, where the third threshold is an integer greater than or equal to 1.

11. The method according to claim 1, wherein: In the second random access procedure, the processing manner adopted by the first physical downlink control channel is the same as the processing manner adopted by the second physical downlink control channel; The first physical downlink control channel includes at least one of the following: Control channel carrying Msg2 scheduling information; A control channel that carries Msg2 retransmission scheduling information; Control channel that carries Msg3 scheduling information; Control channel that carries Msg3 retransmission scheduling information; Control channel carrying Msg4 scheduling information; Control channel that carries Msg4 retransmission scheduling information; The second physical downlink control channel includes a control channel before the second access procedure is performed.

12. The method according to claim 11, wherein: When the first physical downlink control channel adopts the second processing mode, at least one of the following of the first physical downlink control channel is determined by the second processing mode: Information carried in the first physical downlink control channel; Demodulation reference signal configuration in the first physical downlink control channel; A coding method of the first physical downlink control channel; A modulation mode of the first physical downlink control channel; Coding mode and modulation mode of the first physical downlink control channel; The code rate of the first physical downlink control channel.

13. The method according to claim 1, wherein: The processing method adopted by Msg2 in the second random access process is determined by at least one of the following: Determine the processing method of Msg2 according to the system load size; The processing method is the same as that of the control channel carrying Msg2 scheduling information; The processing method is the same as that of the control channel carrying Msg2 retransmission scheduling information; Indicated by the control channel carrying Msg2 scheduling information; Indicated by the control channel carrying Msg2 retransmission scheduling information; When the Msg2 resources indicated by multiple control channels carrying Msg2 scheduling information are the same or the resources overlap or the resources partially overlap, the Msg2 adopts the first processing mode; When the Msg2 resources indicated by multiple control channels carrying Msg2 retransmission scheduling information are the same, or the resources overlap, or the resources partially overlap, the Msg2 adopts the first processing method.

14. The method according to claim 1, wherein: The processing method adopted by Msg3 in the second random access process is determined by at least one of the following: Determine the processing method of Msg3 according to the system load size; The processing method is the same as that of the control channel carrying Msg3 scheduling information; The processing method is the same as that of the control channel carrying Msg3 retransmission scheduling information; Control channel indication carrying Msg3 scheduling information; Control channel indication carrying Msg3 retransmission scheduling information; When the Msg3 resources indicated by multiple control channels carrying Msg3 scheduling information are the same or the resources overlap or part of the resources overlap, the Msg3 adopts the first processing mode; When the Msg3 resources indicated by multiple control channels carrying Msg3 retransmission scheduling information are the same, or the resources overlap, or the resources partially overlap, the Msg3 adopts the first processing method.

15. The method according to claim 1, wherein: The processing method adopted by Msg4 in the second random access process is determined by at least one of the following: Determine the processing method of Msg4 according to the system load size; The processing method is the same as that of the control channel carrying Msg4 scheduling information; The processing method is the same as that of the control channel carrying Msg4 retransmission scheduling information; Control channel indication carrying Msg4 scheduling information; Control channel indication carrying Msg4 retransmission scheduling information; When the Msg4 resources indicated by multiple control channels carrying Msg4 scheduling information are the same or the resources overlap or part of the resources overlap, the Msg4 adopts the first processing mode; When the Msg4 resources indicated by multiple control channels carrying Msg4 retransmission scheduling information are the same, or the resources overlap, or the resources partially overlap, the Msg4 adopts the first processing method.

16. The method according to claim 1, wherein: In the second random access procedure, a second type of message sent later or received later is processed in the same manner as a second type of message sent earlier or received earlier; Among them, at least one of the second type of messages in the second access process includes: The first access message, Msg1; Control channel carrying Msg2 scheduling information; A control channel that carries Msg2 retransmission scheduling information; The second access message, Msg2; Control channel that carries Msg3 scheduling information; Control channel that carries Msg3 retransmission scheduling information; The third access message, Msg3; Control channel carrying Msg4 scheduling information; Control channel that carries Msg4 retransmission scheduling information; The fourth access message, Msg4.

17. A communication node, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method according to any one of claims 1 to 16 is implemented.

18. A storage medium having a computer program stored thereon, wherein when the program is executed by a processor, the method according to any one of claims 1 to 16 is implemented.

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