Random access method, communication node and storage medium

Abstract

The invention provides a random access method, a communication node and a storage medium. The method comprises the following steps: executing at least one of a first random access process and a second random access process; the first random access process comprises a first type of message set, the first type of message set comprises at least one first type of message, and the at least one first type of message adopts a first processing mode; the second random access process comprises a second type of message set, the second type of message set comprises at least one second type of message, and the at least one second type of message adopts the first processing mode or the second processing mode.

Description

Technical Field

[0001] 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

[0002] In the fifth generation mobile communication system (5G) wireless network (New Radio, NR), during the random access process, the terminal can only select a random access channel (Physical Random Access Channel, PRACH) resource corresponding to a beam direction to send a random access signal to start the random access process. This will greatly limit the performance of the terminal device. When the PRACH resource is limited or the number of terminal devices selecting the same beam direction is too large, the random access signal sequence of the same beam direction will collide, which will cause the terminal device to fail to successfully access the system or increase the access delay of the terminal device.

[0003] In the typical application scenarios of the 6th Generation Mobile Communication System (6G), represented by smart cities, smart transportation, and smart homes, there are a large number of terminal devices, and the capabilities of these terminal devices vary greatly, increasing the communication requirements for extremely low latency, extremely high reliability, ultra-large bandwidth, and massive access. In the 6G era, the types of terminal devices accessing the system will become very numerous. The use of NR as an access solution will greatly reduce the success rate of terminal devices accessing the communication system, leading to a very serious increase in access latency. At the same time, it will also lead to huge system resource overhead for random access, seriously affecting the spectrum efficiency of the communication system. Summary of the invention

[0004] The present application provides a random access method, a communication node and a storage medium.

[0005] The 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;

[0006] 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;

[0007] 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.

[0008] An embodiment of the present application also provides a communication node, including: 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.

[0009] An embodiment of the present application further provides a storage medium, on which a computer program is stored. When the computer program is executed by a processor, the random access method described above is implemented.

[0010] With regard 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

[0011] Figure 1 A flowchart of a random access method provided by an embodiment;

[0012] Figure 2 A schematic diagram of the structure of a random access device provided by an embodiment;

[0013] Figure 3 A schematic diagram of the hardware structure of a communication node provided by an embodiment. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the present application more clear, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

[0015] The steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions. Also, although a logical sequence is shown in the flowchart, in some cases, the steps shown or described can be performed in a sequence different from that shown here.

[0016] The large-scale commercial use of the fifth-generation mobile communication system wireless network is accelerating the transformation of the economy and society to digitalization, networking, and intelligence, and promoting the network to enter a new era of the Internet of Everything. The rapidly emerging application needs in smart cities, smart transportation, smart industrial production, etc. have led to the continuous strengthening of the development trend of differentiated network equipment capabilities, diversified network functions, and intelligent network management and control, further promoting the arrival of the sixth-generation mobile communication system of the Internet of Everything. In the typical 6G application scenarios represented by smart cities, smart transportation, and smart homes, there are a large number of intelligent automation devices with highly differentiated capabilities. The communication requirements for extremely low latency, extremely high reliability, ultra-large bandwidth, and massive access are becoming more and more stringent. Intelligent automation applications also put forward high-precision and high-resolution requirements for perception capabilities. On the one hand, the surge in the number of wireless communication and perception devices has made the contradiction between the endless growth of business needs and the limited wireless resources and computing power more prominent; on the other hand, the realization of the 6G vision requires the acquisition of environmental perception information, information interaction and sharing, intelligent information processing, and closed-loop information flow processing from the distribution of control information (including control information of the communication network and control instructions of application execution devices) layer by layer. The existing wireless network architecture and related technologies can no longer 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.

[0017] The rise of artificial intelligence (AI) technology represented by deep learning, reinforcement learning, and distributed learning has had a broad and profound impact on various fields such as communication network optimization, intelligent perception, and control applications, and has greatly promoted the possibility of deep integration in the fields of communication, perception, and computing. Based on this, if 6G can achieve the integration and symbiosis of communication capabilities and perception capabilities under the empowerment of intelligent computing technology, it will give the 6G network the ability to intelligently perceive the physical world and mirror the digital world at all times and everywhere. The massive new intelligent terminals connected will rely on the ever-increasing computing power to learn, communicate, cooperate, and compete, so as to achieve self-learning, self-operation, and self-maintenance of the network, and then realize the vision of a 6G integrated network of inter-sensing computing.

[0018] Figure 1 A flowchart of a random access method provided by an embodiment is shown in FIG. Figure 1 As shown, the method provided in this embodiment can be applied to a communication node, which may include a terminal device, a base station or other network devices, including step 110.

[0019] In step 110, at least one of a first random access procedure and a second random access procedure is performed;

[0020] 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;

[0021] 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.

[0022] 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.

[0023] 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:

[0024] Used to achieve uplink synchronization between the first communication node and the second communication node;

[0025] Realize the transition from Radio Resource Control (RRC) idle state to RRC connected state;

[0026] Mobility management in the RRC connected state of the first communication node, such as achieving uplink synchronization with a neighboring cell during a handover;

[0027] When the second communication node detects that the first communication node is out of synchronization in the uplink, it triggers the first communication node to achieve uplink resynchronization through a downlink instruction;

[0028] When the first communication node detects downlink desynchronization, resynchronization is achieved through uplink random access;

[0029] The first communication node is not scheduled in time in the connected state, and a certain number of times exceeds the threshold to initiate random access to achieve resource competition;

[0030] Get system information (SI);

[0031] Synchronization recovery after beam failure.

[0032] The random access process includes the following steps:

[0033] 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 according to 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).

[0034] Step 2: The second communication node sends the response information Msg2 of Msg1 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 and sent in the physical downlink shared channel (PDSCH).

[0035] Msg2 includes one or more information packets, wherein the information packet includes at least one index information of a random access signal. The index information of the random access signal is used to indicate that the information packet is a response to the random access signal of the index information.

[0036] 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 according to the scheduling information carried by the DCI in the detected PDCCH.

[0037] Step 3: The first communication node sends a Msg3 message on the physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) indicated in Msg2 according to the resource allocation information of the PUSCH.

[0038] Step 4: After the second communication node receives the Msg3 message sent by the terminal device, the second communication node sends a response message Msg4 of Msg3 to the terminal device, wherein Msg4 is carried by the PDSCH scheduled by the PDCCH.

[0039] The first communication node may be a terminal, and the second communication node may be a base station.

[0040] In this embodiment, a message / signaling / channel may adopt at least two processing modes, which are defined as a first processing mode and a second processing mode, respectively. The processing mode may include at least one of the following: a sending mode; a receiving mode; a resource configuration mode; a sending format; a scheduling mode; a format of bearer information; and a transmission configuration. The message / signaling / channel (i.e., a first type of message) involved in steps 1 to 4 corresponding to the first random access process adopts the first processing mode; the message / signaling / channel (i.e., a second type of message) involved in steps 1 to 4 corresponding to the second random access process adopts the first processing mode or the second processing mode.

[0041] In this embodiment, the communication node accesses the communication system by executing the first random access process and / or the second random access process, and the second type of message in the second random access process 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.

[0042] In one embodiment, the first processing mode is a configurable processing mode, and the processing mode includes at least one of the following:

[0043] How messages or signaling or channels are generated;

[0044] The way messages or signaling or channels are sent;

[0045] the manner in which messages or signalling or channels are received;

[0046] The format of the information carried by the message or signaling or channel;

[0047] The content of the message or signaling or the information carried by the channel;

[0048] The transmission configuration of a message or signaling or channel.

[0049] 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 conditional triggering.

[0050] The first processing method may include at least one of the following:

[0051] The message or signaling or channel is generated in a pre-configured manner;

[0052] The message or signaling or channel is sent in a pre-configured manner;

[0053] The reception mode of the message or signaling or channel adopts a pre-configured mode;

[0054] The format of the information carried by the message or signaling or channel is preconfigured;

[0055] The content of the message or signaling or the information carried by the channel is preconfigured;

[0056] The transmission configuration of the message or signaling or channel adopts a pre-configured manner;

[0057] In this embodiment, the sending method may include sending antenna configuration, for example, single-antenna sending, multi-antenna sending; the receiving method may include receiving antenna configuration, for example, single-antenna receiving, 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.

[0058] 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:

[0059] How messages or signaling or channels are generated;

[0060] The way messages or signaling or channels are sent;

[0061] the manner in which messages or signalling or channels are received;

[0062] The format of the information carried by the message or signaling or channel;

[0063] The content of the message or signaling or the information carried by the channel;

[0064] The transmission configuration of a message or signaling or channel.

[0065] In this embodiment, the second processing method includes at least one of the following:

[0066] How messages / signaling / channels are generated;

[0067] How messages / signaling / channels are sent;

[0068] How messages / signaling / channels are received;

[0069] The format of the information carried by the message / signaling / channel;

[0070] The content of the information carried by the message / signaling / channel;

[0071] Transmission configuration of messages / signaling / channels.

[0072] The 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 the transmission configuration can also be named as a transmission configuration or a resource configuration, etc., and this application does not make specific restrictions on this.

[0073] 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.

[0074] In some embodiments, the transmission configuration may also 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-coded codewords, transmitter antenna port, transmitter antenna weight vector, transmitter antenna weight matrix, receiver spatial filter, receiver coding, receiver-coded codewords, receiver antenna port, receiver antenna weight vector, receiver antenna weight matrix, departure angle (angle of departure, AOD), departure zenith angle (zenith angle of departure, ZOD), arrival angle (angle of arrival, AOA), arrival zenith angle (zenith angle of arrival, ZOA), vector or vector index constructed by at least one angle of AOA, AOD, ZOD, or ZOA, and codewords in the codebook. The reference signal resources include at least one of the time domain resources, frequency domain resources, code domain resources and port information of the reference signal; 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.

[0075] 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, receive beam direction information.

[0076] In some embodiments, the transmission configuration may further include at least one of the following configuration information: a spatial filter, a spatial receiving parameter, and a spatial transmitting 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 composed of a plurality of DFT linear combinations, and a vector composed of a plurality of precoding vector linear combinations.

[0077] It should be understood that the content included in the above transmission configuration is only an example. With the change of actual needs and the evolution of network architecture, the transmission configuration may also include other possible content, and the embodiments of the present application do not impose specific limitations on this.

[0078] 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.

[0079] The second processing method may be determined in at least one of the following ways:

[0080] The message / signaling / channel generation mode is determined by the first communication node or by the second communication node or jointly by the first communication node and the second communication node;

[0081] The message / signaling / channel transmission mode is determined by the first communication node or by the second communication node or jointly by the first communication node and the second communication node;

[0082] The receiving mode of the message / signaling / channel is determined by the first communication node or by the second communication node or jointly by the first communication node and the second communication node;

[0083] The format of the bearer information of the message / signaling / channel is determined by the first communication node or by the second communication node or jointly by the first communication node and the second communication node;

[0084] The content of the bearer information of the message / signaling / channel is determined by the first communication node or by the second communication node or jointly by the first communication node and the second communication node;

[0085] The transmission configuration of the message / signaling / channel is determined by the first communication node or by the second communication node or jointly by the first communication node and the second communication node.

[0086] 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 through the first reference information set. The first reference information set includes at least one of the following: configuration information of downlink reference signal / channel; configuration information of uplink reference signal / channel; configuration information of downlink signal / channel; configuration information of uplink signal / channel; measurement or detection information of downlink reference signal / channel; measurement or detection information of uplink reference signal / channel; measurement or detection information of uplink signal / channel; measurement or detection information of downlink signal / channel.

[0087] 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 through the first functional module. Among them, the first functional module may also be named as a learning module, an artificial intelligence module (artificial intelligence, AI), a configuration estimation module, or a resource allocation module, etc., and the embodiments of the present application do not impose specific restrictions on this. As an example, the output information of the first functional module may include one or more second processing modes of messages / signalings / channels. When multiple second processing modes of messages / signalings / channels are included, a second processing mode is selected as the second processing mode of the message / signaling / channel.

[0088] 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), and the neural network includes multiple layers, each layer includes 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 using 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 (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 referred to as a network model, and the neural network parameters can be referred to as network parameters. A network model defines the network architecture, including the number of neural network layers, the size of each layer, the activation function, the connection status, the convolution kernel and the size of the convolution step, the convolution type (such as 1D convolution, 2D convolution, 3D convolution, hollow convolution, transposed convolution, separable convolution, grouped convolution, dilated convolution, etc.), and the network parameters are the weights and / or biases of each layer of the network in the network model and their values. A network model can correspond to multiple sets of different neural network parameter values ​​to adapt to different scenarios. The network parameter values ​​can be obtained through offline training and / or online training. A neural network model can correspond to multiple different neural network parameter values.

[0089] In one embodiment, the second type of message includes a second type of message A and a second type of message B, and the processing method of the second type of message A includes at least one of the following:

[0090] The same processing method as the second type of message B;

[0091] Determined by the processing method of the second type of message B;

[0092] Indicated by the second type of message B;

[0093] 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.

[0094] In this embodiment, the second-category message A and the second-category message B are messages in a second-category message set, the second-category message B is located before the second-category message A in the second-category message set, and the second-category message B may include at least one second-category message.

[0095] 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.

[0096] In one embodiment, the second type message A and the second type message B are uplink messages or downlink messages.

[0097] 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.

[0098] In one embodiment, the processing method of the second type of message includes at least one of the following:

[0099] The same processing method as the third type of message or signaling or channel;

[0100] Determined by the way the third type of message or signaling or channel is handled;

[0101] Indicated by a third type of message or signaling or channel;

[0102] The third type of message or signaling or channel is sent or received before the second type of message set.

[0103] In one embodiment, the processing method of the second type of message includes at least one of the following:

[0104] The processing method is the same as that of the fourth type of message or signaling or channel;

[0105] Determined by the way the fourth type of message or signaling or channel is handled;

[0106] Through the fourth type of message or signaling or channel indication;

[0107] The fourth type of message includes at least one of the following:

[0108] 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.

[0109] System messages include at least one of the following:

[0110] First type system message; second type system message.

[0111] In this embodiment, the first type of system information may be a master information block (Master Information Block, MIB), and the channel of the MIB may be a physical broadcast channel; the second type of system information may be a system information block (System Information Block, SIB), and the channel of the SIB may be a physical downlink shared channel; the channel of the SIB scheduling information may be a physical downlink control channel.

[0112] Among them, MIB is the main information block of the system, which is generally broadcast periodically by the first node to all second nodes. MIB contains basic system configuration information, such as system bandwidth, frame structure, etc. The second node can obtain key system parameters by parsing MIB, so that it can correctly access the system.

[0113] SIB is a block that carries additional system information. Compared with MIB, SIB contains more detailed system information, such as cell parameters, neighboring cell information, system broadcast messages, etc. The information contained in SIB is relatively fixed but changes over time, so the second node needs to obtain the latest SIB information regularly.

[0114] 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.

[0115] 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.

[0116] 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, respectively, wherein:

[0117] The first processing method includes at least one of the following:

[0118] The generation method of messages / signaling / channels adopts a pre-configured method;

[0119] The message / signaling / channel is sent in a pre-configured manner;

[0120] The reception method of messages / signaling / channels adopts a pre-configured method;

[0121] The format of the bearer information of the message / signaling / channel is pre-configured;

[0122] The content of the bearer information of the message / signaling / channel is pre-configured;

[0123] The transmission configuration of messages / signaling / channels adopts pre-configuration mode;

[0124] The second processing method may be determined in at least one of the following ways:

[0125] The message / signaling / channel generation mode is determined by the terminal or by the base station or jointly by the base station and the terminal;

[0126] The message / signaling / channel transmission mode is determined by the terminal or by the base station or jointly by the base station and the terminal;

[0127] The reception mode of the message / signaling / channel is determined by the terminal or by the base station or jointly by the base station and the terminal;

[0128] 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;

[0129] 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;

[0130] 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.

[0131] In this embodiment, two access procedures are configured in the wireless communication system, namely the first access procedure and the second access procedure. The message / signaling / channel in the first access procedure adopts the first processing method; the processing method of the message / signaling / channel in the second access procedure is the same as the processing method of the fourth type of message / signaling / channel;

[0132] The fourth type of message is at least one of the following:

[0133] Master Information Block (MIB)

[0134] Messages / signaling / channels that carry master information blocks;

[0135] Messages / signalling / channels carrying scheduling information of master information blocks;

[0136] System Information Block (SIB)

[0137] Messages / signalling / channels carrying system information blocks;

[0138] Messages / signalling / channels carrying scheduling information of system information blocks;

[0139] System synchronization information;

[0140] 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); the message / signaling / channel carrying the scheduling information of the system information block is the physical downlink control channel (PDCCH).

[0141] Embodiment 2: Based on Embodiment 1, two access procedures are configured in the wireless communication system, namely, a first access procedure and a second access procedure. The message / signaling / channel in the first access procedure adopts the first processing method; the processing method of the message / signaling / channel in the second access procedure is the same as the processing method of the fourth category message / signaling / channel most recently detected in the fourth category message / signaling / channel;

[0142] The fourth type of message is at least one of the following:

[0143] Master Information Block (MIB)

[0144] Messages / signaling / channels that carry master information blocks;

[0145] Messages / signalling / channels carrying scheduling information of master information blocks;

[0146] System Information Block (SIB)

[0147] Messages / signalling / channels carrying system information blocks;

[0148] Messages / signalling / channels carrying scheduling information of system information blocks;

[0149] System synchronization information;

[0150] 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.

[0151] Embodiment 3: Based on Embodiment 1, two access procedures are configured in the wireless communication system, namely the first access procedure and the second access procedure. The message / signaling / channel in the first access procedure adopts the first processing method; the message / signaling / channel in the second access procedure is indicated by the fourth type of message / signaling / channel;

[0152] The fourth type of message is at least one of the following:

[0153] Master Information Block (MIB)

[0154] Messages / signaling / channels that carry master information blocks;

[0155] Messages / signalling / channels carrying scheduling information of master information blocks;

[0156] System Information Block (SIB)

[0157] Messages / signalling / channels carrying system information blocks;

[0158] Messages / signalling / channels carrying scheduling information of system information blocks;

[0159] System synchronization information.

[0160] Embodiment 4: Based on Embodiment 1, two access procedures are configured in the wireless communication system, namely, a first access procedure and a second access procedure. The message / signaling / channel in the first access procedure adopts a first processing method. The processing method of the message / signaling / channel in the second access procedure is consistent with the latest detected fourth-category message / signaling / channel indication in the fourth-category message / signaling / channel;

[0161] The fourth type of message is at least one of the following:

[0162] Master Information Block (MIB)

[0163] Messages / signaling / channels that carry master information blocks;

[0164] Messages / signalling / channels carrying scheduling information of master information blocks;

[0165] System Information Block (SIB)

[0166] Messages / signalling / channels carrying system information blocks;

[0167] Messages / signalling / channels carrying scheduling information of system information blocks;

[0168] System synchronization information;

[0169] 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.

[0170] 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:

[0171] 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;

[0172] 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.

[0173] In this embodiment, if the number of times the second random access procedure fails to be executed is greater than or equal to the first threshold and / or the number of times a second-type message fails to be sent or received 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.

[0174] In one embodiment, 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:

[0175] Indication information indicating failure of the second random access procedure;

[0176] The number of times the second random access procedure fails;

[0177] The number of retransmissions of the second type of message due to failure to send or receive in the second random access process;

[0178] Resource configuration information used when sending or receiving of the second type of message in the second random access procedure fails.

[0179] In this embodiment, the number of failures of the second random access procedure may be the number of first transmissions or the sum of the number of first transmissions and the number of retransmissions.

[0180] The resource configuration information may include at least one of the following:

[0181] Time domain resources;

[0182] Frequency domain resources;

[0183] The sequence information sent;

[0184] The precoding information used;

[0185] Information about the code used.

[0186] 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;

[0187] The second condition includes at least one of the following:

[0188] 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;

[0189] 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;

[0190] 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.

[0191] In this embodiment, during the execution of the second random access procedure, if the number of failures in executing the second random access procedure is greater than or equal to the third threshold and / or the number of failures in sending or receiving the second type of message is greater than or equal to the third threshold, the number of times the second type of message is sent or received or the number of times it is retransmitted is reconfigured.

[0192] In some embodiments, the first type of message set in the first access process includes at least one of the following:

[0193] Access message 1, Msg1,

[0194] Control channel carrying Msg2 scheduling information;

[0195] A control channel that carries Msg2 retransmission scheduling information;

[0196] Access message 2, Msg2;

[0197] Control channel that carries Msg3 scheduling information;

[0198] Control channel that carries Msg3 retransmission scheduling information;

[0199] Access message 3, Msg3;

[0200] Control channel carrying Msg4 scheduling information;

[0201] Control channel that carries Msg4 retransmission scheduling information;

[0202] Access message 4, Msg4.

[0203] The second type of message set in the second access process includes at least one of the following:

[0204] Access message 1, Msg1,

[0205] Control channel carrying Msg2 scheduling information;

[0206] Control channel that carries Msg2 retransmission scheduling information;

[0207] Access message 2, Msg2;

[0208] Control channel that carries Msg3 scheduling information;

[0209] Control channel that carries Msg3 retransmission scheduling information;

[0210] Access message 3, Msg3;

[0211] Control channel carrying Msg4 scheduling information;

[0212] Control channel that carries Msg4 retransmission scheduling information;

[0213] Access message 4, Msg4.

[0214] In one embodiment, in the second random access procedure, a processing method adopted by the first physical downlink control channel is the same as a processing method adopted by the second physical downlink control channel;

[0215] The first physical downlink control channel includes at least one of the following:

[0216] Control channel carrying Msg2 scheduling information;

[0217] Control channel that carries Msg2 retransmission scheduling information;

[0218] Control channel that carries Msg3 scheduling information;

[0219] Control channel that carries Msg3 retransmission scheduling information;

[0220] Control channel carrying Msg4 scheduling information;

[0221] Control channel that carries Msg4 retransmission scheduling information;

[0222] The second physical downlink control channel includes a control channel before the second access procedure is performed.

[0223] 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.

[0224] 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:

[0225] Information carried in the first physical downlink control channel;

[0226] Demodulation reference signal configuration in the first physical downlink control channel;

[0227] A coding method of the first physical downlink control channel;

[0228] A modulation mode of the first physical downlink control channel;

[0229] Coding mode and modulation mode of the first physical downlink control channel;

[0230] A code rate of the first physical downlink control channel.

[0231] In one embodiment, the processing manner adopted by Msg2 in the second random access procedure is determined by at least one of the following:

[0232] Determine the processing method of Msg2 according to the system load size;

[0233] The processing method is the same as that of the control channel carrying Msg2 scheduling information;

[0234] The processing method is the same as that of the control channel carrying Msg2 retransmission scheduling information;

[0235] Indicated by the control channel carrying Msg2 scheduling information;

[0236] Indicated by the control channel carrying Msg2 retransmission scheduling information;

[0237] 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;

[0238] 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.

[0239] 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.

[0240] In one embodiment, the processing manner adopted by Msg3 in the second random access process is determined by at least one of the following:

[0241] Determine the processing method of Msg3 according to the system load size;

[0242] The processing method is the same as that of the control channel carrying Msg3 scheduling information;

[0243] The processing method is the same as that of the control channel carrying Msg3 retransmission scheduling information;

[0244] Control channel indication carrying Msg3 scheduling information;

[0245] Control channel indication carrying Msg3 retransmission scheduling information;

[0246] 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;

[0247] 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.

[0248] In one embodiment, the processing method of Msg4 in the second random access process is determined by at least one of the following:

[0249] Determine the processing method of Msg4 according to the system load size;

[0250] The processing method is the same as that of the control channel carrying Msg4 scheduling information;

[0251] The processing method is the same as that of the control channel carrying Msg4 retransmission scheduling information;

[0252] Control channel indication carrying Msg4 scheduling information;

[0253] Control channel indication carrying Msg4 retransmission scheduling information;

[0254] 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 mode;

[0255] 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.

[0256] 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.

[0257] In one embodiment, in the second random access procedure, the processing method of the second type of message sent later or received later is the same as the processing method of the second type of message sent earlier or received earlier;

[0258] Among them, at least one of the second type of messages in the second access process includes:

[0259] The first access message, Msg1;

[0260] Control channel carrying Msg2 scheduling information;

[0261] Control channel that carries Msg2 retransmission scheduling information;

[0262] The second access message, Msg2;

[0263] Control channel that carries Msg3 scheduling information;

[0264] Control channel that carries Msg3 retransmission scheduling information;

[0265] The third access message, Msg3;

[0266] Control channel carrying Msg4 scheduling information;

[0267] Control channel that carries Msg4 retransmission scheduling information;

[0268] The fourth access message, Msg4.

[0269] 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.

[0270] Embodiment 5: In a wireless communication system, a random access process includes the following steps:

[0271] 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 in different beam directions; then, the terminal can select the beam direction corresponding to one of the SSBs according to 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).

[0272] In this embodiment, the configuration information of the Msg1 is carried in the SIB and sent. The configuration information of the Msg1 includes at least one of the following:

[0273] Configuration of random access signal

[0274] The time-frequency resources occupied by random access signals, that is, the configuration of PRACH resources

[0275] Timing Advance (TA) of random access signal transmission configuration

[0276] Step 2: The base station sends the response information Msg2 of Msg1 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.

[0277] Msg2 includes one or more information packets, wherein the information packet includes at least one index information of a random access signal. The index information of the random access signal is used to indicate that the information packet is a response to the random access signal of the index information.

[0278] 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 according to the scheduling information carried by the DCI in the detected PDCCH.

[0279] 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.

[0280] Step 3: The terminal sends a Msg3 message on the PUSCH channel indicated by Msg2 according to the resource allocation information of the PUSCH channel. The Msg3 message includes the terminal's identification information:

[0281] Step 4: After receiving the Msg3 message sent by the UE, the base station sends a response message of Msg3, namely Msg4, to the terminal. Msg4 is carried by the PDSCH scheduled by the PDCCH.

[0282] 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, respectively.

[0283] The first processing method includes at least one of the following:

[0284] The generation method of messages / signaling / channels adopts a pre-configured method;

[0285] The message / signaling / channel is sent in a pre-configured manner;

[0286] The reception method of messages / signaling / channels adopts a pre-configured method;

[0287] The format of the bearer information of the message / signaling / channel is pre-configured;

[0288] The content of the bearer information of the message / signaling / channel is pre-configured;

[0289] The transmission configuration of messages / signaling / channels adopts pre-configuration mode;

[0290] The second processing method may be determined in at least one of the following ways:

[0291] The message / signaling / channel generation mode is determined by the terminal or by the base station or jointly by the base station and the terminal;

[0292] The message / signaling / channel transmission mode is determined by the terminal or by the base station or jointly by the base station and the terminal;

[0293] The reception mode of the message / signaling / channel is determined by the terminal or by the base station or jointly by the base station and the terminal;

[0294] 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;

[0295] 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;

[0296] 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.

[0297] In this embodiment, 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 method of the messages / signaling / channels involved in steps 1 to 4 corresponding to the second random access procedure is the same as the processing method of the fourth type of messages / signaling / channels;

[0298] The fourth type of message is at least one of the following:

[0299] Master Information Block (MIB)

[0300] Messages / signaling / channels that carry master information blocks;

[0301] Messages / signalling / channels carrying scheduling information of master information blocks;

[0302] System Information Block (SIB)

[0303] Messages / signalling / channels carrying system information blocks;

[0304] Messages / signalling / channels carrying scheduling information of system information blocks;

[0305] System synchronization information.

[0306] In this embodiment, the message / signaling / channel carrying the main information block is a physical broadcast channel (Physical Broadcast Chanel, PBCH).

[0307] In this embodiment, the message / signaling / channel carrying the system information block is a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH).

[0308] In this embodiment, the message / signaling / channel carrying the scheduling information of the system information block is a physical downlink control channel (Physical Downlink Control Channel, PDCCH).

[0309] Embodiment 6: 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 message / signaling / channel involved in the corresponding steps 1 to 4 in the first random access procedure adopts a first processing method; the message / signaling / channel processing method involved in the corresponding steps 1 to 4 in the second random access procedure includes:

[0310] In the second random access procedure, a processing method of the first PDCCH is the same as a processing method of the second PDCCH.

[0311] The first PDCCH is at least one of the following:

[0312] Control channel carrying Msg2 scheduling information;

[0313] Control channel that carries Msg2 retransmission scheduling information;

[0314] Control channel that carries Msg3 scheduling information;

[0315] Control channel that carries Msg3 retransmission scheduling information;

[0316] Control channel carrying Msg4 scheduling information;

[0317] Control channel that carries Msg4 retransmission scheduling information;

[0318] The second PDCCH is at least one of the following:

[0319] A control channel before the second random access procedure.

[0320] In this embodiment, when the first PDCCH adopts the second processing mode, at least one of the following of the PDCCH is determined by the second processing mode:

[0321] Information carried in the first PDCCH;

[0322] DM RS configuration in the first PDCCH;

[0323] A coding method of the first PDCCH;

[0324] A modulation mode of the first PDCCH;

[0325] Coding and modulation scheme of the first PDCCH;

[0326] A code rate of the first PDCCH;

[0327] 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 message / signaling / channel involved in the corresponding steps 1 to 4 in the first random access procedure adopts a first processing method; the message / signaling / channel processing method involved in the corresponding steps 1 to 4 in the second random access procedure includes:

[0328] The processing method adopted by Msg2 in the second random access process is determined by at least one of the following:

[0329] Determine the processing method of Msg2 according to the system load size;

[0330] The processing method is the same as that of the control channel carrying Msg2 scheduling information;

[0331] The processing method is the same as that of the control channel carrying Msg2 retransmission scheduling information;

[0332] Control channel indication carrying Msg2 scheduling information;

[0333] Control channel indication carrying Msg2 retransmission scheduling information;

[0334] 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 mode;

[0335] 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.

[0336] 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 message / signaling / channel involved in the corresponding steps 1 to 4 in the first random access procedure adopts a first processing method; the message / signaling / channel processing method involved in the corresponding steps 1 to 4 in the second random access procedure includes:

[0337] The processing method adopted by Msg3 in the second access process is determined by at least one of the following:

[0338] Determine the processing method of Msg3 according to the system load size;

[0339] The processing method is the same as that of the control channel carrying Msg3 scheduling information;

[0340] The processing method is the same as that of the control channel carrying Msg3 retransmission scheduling information;

[0341] Control channel indication carrying Msg3 scheduling information;

[0342] Control channel indication carrying Msg3 retransmission scheduling information;

[0343] 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 mode;

[0344] 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.

[0345] Embodiment 9: 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 message / signaling / channel involved in the corresponding steps 1 to 4 in the first random access procedure adopts a first processing method. The processing method of the message / signaling / channel involved in the corresponding steps 1 to 4 in the second random access procedure includes:

[0346] The processing method adopted by Msg4 in the second random access process is determined by at least one of the following:

[0347] Determine the processing method of Msg4 according to the system load size;

[0348] The processing method is the same as that of the control channel carrying Msg4 scheduling information;

[0349] The processing method is the same as that of the control channel carrying Msg4 retransmission scheduling information;

[0350] Control channel indication carrying Msg4 scheduling information;

[0351] Control channel indication carrying Msg4 retransmission scheduling information;

[0352] When the Msg4 resources indicated by multiple control channels carrying Msg4 scheduling information are the same, overlapped, or partially overlapped, the Msg4 adopts the first processing mode;

[0353] When the Msg4 resources indicated by multiple control channels carrying Msg4 retransmission scheduling information are the same, overlapped, or partially overlapped, the Msg4 adopts the first processing method.

[0354] The embodiment of the present application also provides a random access device. Figure 2 FIG. 1 is a schematic diagram of a random access device provided by an embodiment. Figure 2 As shown, the device can be configured in a communication node, including:

[0355] An access module 110, configured to execute at least one of a first random access procedure and a second random access procedure;

[0356] 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;

[0357] 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.

[0358] The random access device of this embodiment connects the communication node to the communication system by executing the first random access process and / or the second random access process. The second type of message in the second random access process 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.

[0359] In one embodiment, the first processing mode is a configurable processing mode, and the processing mode includes at least one of the following:

[0360] How messages or signaling or channels are generated;

[0361] The way in which the message or letter or channel is sent;

[0362] the manner in which messages or signalling or channels are received;

[0363] The format of the information carried by the message or signaling or channel;

[0364] The content of the message or signaling or the information carried by the channel;

[0365] The transmission configuration of a message or signaling or channel.

[0366] 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:

[0367] How messages or signaling or channels are generated;

[0368] The way messages or signaling or channels are sent;

[0369] the manner in which messages or signalling or channels are received;

[0370] The format of the information carried by the message or signaling or channel;

[0371] The content of the message or signaling or the information carried by the channel;

[0372] The transmission configuration of a message or signaling or channel.

[0373] In one embodiment, the second type of message includes a second type of message A and a second type of message B, and the processing method of the second type of message A includes at least one of the following:

[0374] The same processing method as the second type of message B;

[0375] Determined by the processing method of the second type of message B;

[0376] Indicated by the second type of message B;

[0377] 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.

[0378] In one embodiment, the second type message A and the second type message B are uplink messages or downlink messages.

[0379] In one embodiment, the processing method of the second type of message includes at least one of the following:

[0380] The same processing method as the third type of message or signaling or channel;

[0381] Determined by the way the third type of message or signaling or channel is handled;

[0382] Indicated by a third type of message or signaling or channel;

[0383] The third type of message / signaling / channel is sent or received before the second type of message set.

[0384] In one embodiment, the processing method of the second type of message includes at least one of the following:

[0385] The processing method is the same as that of the fourth type of message or signaling or channel;

[0386] Determined by the way the fourth type of message or signaling or channel is handled;

[0387] Through the fourth type of message or signaling or channel indication;

[0388] The fourth type of message includes at least one of the following:

[0389] 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.

[0390] 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:

[0391] 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;

[0392] 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.

[0393] In one embodiment, 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:

[0394] Indication information indicating failure of the second random access procedure;

[0395] The number of times the second random access procedure fails;

[0396] The number of retransmissions of the second type of message due to failure to send or receive in the second random access process;

[0397] Resource configuration information used when sending or receiving of the second type of message in the second random access procedure fails.

[0398] 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;

[0399] The second condition includes at least one of the following:

[0400] 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;

[0401] 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;

[0402] 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.

[0403] In one embodiment, in the second random access procedure, a processing method adopted by the first physical downlink control channel is the same as a processing method adopted by the second physical downlink control channel;

[0404] The first physical downlink control channel includes at least one of the following:

[0405] Control channel carrying Msg2 scheduling information;

[0406] Control channel that carries Msg2 retransmission scheduling information;

[0407] Control channel that carries Msg3 scheduling information;

[0408] Control channel that carries Msg3 retransmission scheduling information;

[0409] Control channel carrying Msg4 scheduling information;

[0410] Control channel that carries Msg4 retransmission scheduling information;

[0411] The second physical downlink control channel includes a control channel before the second access procedure is performed.

[0412] 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:

[0413] Information carried in the first physical downlink control channel;

[0414] Demodulation reference signal configuration in the first physical downlink control channel;

[0415] A coding method of the first physical downlink control channel;

[0416] A modulation mode of the first physical downlink control channel;

[0417] Coding mode and modulation mode of the first physical downlink control channel;

[0418] A code rate of the first physical downlink control channel.

[0419] In one embodiment, the processing manner adopted by Msg2 in the second random access procedure is determined by at least one of the following:

[0420] Determine the processing method of Msg2 according to the system load size;

[0421] The processing method is the same as that of the control channel carrying Msg2 scheduling information;

[0422] The processing method is the same as that of the control channel carrying Msg2 retransmission scheduling information;

[0423] Indicated by the control channel carrying Msg2 scheduling information;

[0424] Indicated by the control channel carrying Msg2 retransmission scheduling information;

[0425] 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;

[0426] 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.

[0427] In one embodiment, the processing manner adopted by Msg3 in the second random access process is determined by at least one of the following:

[0428] Determine the processing method of Msg3 according to the system load size;

[0429] The processing method is the same as that of the control channel carrying Msg3 scheduling information;

[0430] The processing method is the same as that of the control channel carrying Msg3 retransmission scheduling information;

[0431] Control channel indication carrying Msg3 scheduling information;

[0432] Control channel indication carrying Msg3 retransmission scheduling information;

[0433] 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;

[0434] 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.

[0435] In one embodiment, the processing method adopted by Msg4 in the second random access process is determined by at least one of the following:

[0436] Determine the processing method of Msg4 according to the system load size;

[0437] The processing method is the same as that of the control channel carrying Msg4 scheduling information;

[0438] The processing method is the same as that of the control channel carrying Msg4 retransmission scheduling information;

[0439] Control channel indication carrying Msg4 scheduling information;

[0440] Control channel indication carrying Msg4 retransmission scheduling information;

[0441] 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 mode;

[0442] 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.

[0443] In one embodiment, in the second random access procedure, the processing method of the second type of message sent later or received later is the same as the processing method of the second type of message sent earlier or received earlier;

[0444] Among them, at least one of the second type of messages in the second access process includes:

[0445] The first access message, Msg1;

[0446] Control channel carrying Msg2 scheduling information;

[0447] Control channel that carries Msg2 retransmission scheduling information;

[0448] The second access message, Msg2;

[0449] Control channel that carries Msg3 scheduling information;

[0450] Control channel that carries Msg3 retransmission scheduling information;

[0451] The third access message, Msg3;

[0452] Control channel carrying Msg4 scheduling information;

[0453] Control channel that carries Msg4 retransmission scheduling information;

[0454] The fourth access message, Msg4.

[0455] The random access device proposed in this embodiment and the random access method proposed in the above embodiment belong to the same inventive concept. The technical details not fully described in this embodiment can be referred to any of the above embodiments, and this embodiment has the same beneficial effects as the execution transmission method.

[0456] The embodiment of the present application also provides a communication node, Figure 3 A hardware structure diagram of a communication node provided by an embodiment is shown in FIG. Figure 3 As shown, the communication node provided in 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, and the processor 510 implements the above-mentioned random access method when executing the program.

[0457] The communication node may further include a memory 520; the processor 510 in the communication node may be one or more, Figure 3 A processor 510 is taken 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.

[0458] The communication node further includes: a communication device 530 , an input device 540 and an output device 550 .

[0459] 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. Figure 2 The example of connecting through bus is taken in the following.

[0460] 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.

[0461] 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.

[0462] The memory 520, as a computer-readable storage medium, may be configured to store software programs, computer executable programs, and modules, such as program instructions / modules corresponding to the random access method described in the embodiment of the present application (e.g., 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, an application required for at least one function; the data storage area may store data created according to 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 arranged 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.

[0463] 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, any random access method described in the embodiments of the present application is implemented.

[0464] The computer storage medium of the embodiment of the present application can adopt any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium can be, for example, but not limited to: an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples (non-exhaustive list) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (Random Access Memory, RAM), a read-only memory (Read Only Memory, ROM), an erasable programmable read-only memory (ErasableProgrammable Read Only Memory, EPROM), a flash memory, an optical fiber, a portable CD-ROM, an optical storage device, a magnetic storage device, or any suitable combination of the above. The computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, a device or a device or used in combination with it.

[0465] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, which carry computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to: electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0466] 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 above.

[0467] The computer program code for performing the operation 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 the remote computer, or completely on the 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 through the Internet).

[0468] The above description is merely an exemplary embodiment of the present application and is not intended to limit the protection scope of the present application.

[0469] 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.

[0470] In general, various embodiments of the present application can be implemented in hardware or dedicated circuits, software, logic or any combination thereof. For example, some aspects can be implemented in hardware, while other aspects can 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.

[0471] 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.

[0472] The block diagram of any logic flow in the drawings of the present 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 in 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 memory 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 general-purpose computers, special-purpose computers, microprocessors, digital signal processors (DSP), application-specific integrated circuits (ASIC), programmable logic devices (FPGA) and processors based on multi-core processor architectures.

[0473] By way of exemplary and non-limiting examples, a detailed description of exemplary embodiments of the present application has been provided above. However, various modifications and adjustments to the above embodiments will be apparent to those skilled in the art when considered in conjunction with the accompanying drawings and claims, but will not depart from the scope of the present application. Therefore, the proper scope of the present application will be determined according to the claims.

Claims

1. A random access method, characterized in that: The method comprises: 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, characterized in that 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, characterized in that 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, characterized in that: 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, characterized in that The second-category message A and the second-category message B are uplink messages or downlink messages.

6. The method according to claim 1, characterized in that 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, characterized in that 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, characterized in that 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, characterized in that 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, characterized in that 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, characterized in that: 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, characterized in that 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; A code rate of the first physical downlink control channel.

13. The method according to claim 1, characterized in that 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, characterized in that 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, characterized in that 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, characterized in that 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, characterized in that: include: 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, characterized in that: 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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