Random access method and device, and storage medium

Abstract

Provided are a random access method and device, and a storage medium. The random access method comprises: sending a random access request message to multiple base stations; and receiving a first message, wherein the first message comprises respective random access response messages from the multiple base stations to the terminal.

Description

Random access method, device and storage medium

[0001] This disclosure claims priority to Chinese patent application No. 202311115047.8, filed on August 29, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the field of communication technologies, and in particular to a random access method, device, and storage medium. Background Art

[0003] In the evolution of new scenarios, for the sake of fast multi-point coordination, terminal devices or user equipment (UE) need to use resources of multiple cells or base stations at an earlier time.

[0004] Summary of the Invention

[0005] In one aspect, an embodiment of the present disclosure provides a random access method, applied to a terminal. The random access method includes:

[0006] Sending random access request messages to multiple base stations;

[0007] A first message is received, where the first message includes random access response messages from multiple base stations to the terminal.

[0008] On the other hand, an embodiment of the present disclosure provides a random access method, applied to a first base station. The random access method includes:

[0009] Obtaining random access response messages from multiple base stations;

[0010] A first message is sent to the terminal, where the first message includes random access response messages of multiple base stations to the terminal.

[0011] In another aspect, an embodiment of the present disclosure provides a random access device, applied to a terminal. The random access device includes: a sending module and a receiving module;

[0012] A sending module, configured to send random access request messages to multiple base stations;

[0013] The receiving module is configured to receive a first message, where the first message includes random access response messages from multiple base stations to the terminal.

[0014] In another aspect, an embodiment of the present disclosure provides a random access device, applied to a first base station. The random access device includes: an acquisition module and a sending module;

[0015] An acquisition module, configured to acquire random access response messages from multiple base stations;

[0016] The sending module is configured to send a first message to the terminal, where the first message includes random access response messages of multiple base stations to the terminal.

[0017] In another aspect, an embodiment of the present disclosure provides a communication device comprising: a memory and a processor; the memory and the processor are coupled; the memory is configured to store a computer program; and the processor implements the random access method described in any of the above embodiments when executing the computer program.

[0018] In another aspect, an embodiment of the present disclosure provides a computer-readable storage medium having computer program instructions stored thereon, which, when executed by a processor, implement the random access method described in any of the above embodiments.

[0019] In another aspect, an embodiment of the present disclosure provides a computer program product, which includes computer program instructions, and when executed by a processor, implements the random access method described in any of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present disclosure, the following briefly introduces the drawings required for use in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] FIG1 is a schematic diagram of an architecture of a mobile communication network according to some embodiments.

[0022] FIG2 is a schematic diagram of a data structure according to some embodiments.

[0023] FIG3 is a schematic diagram of another data structure according to some embodiments.

[0024] FIG4 is a schematic diagram of another data structure according to some embodiments.

[0025] FIG5 is a flowchart of a random access method according to some embodiments.

[0026] FIG6 is a schematic diagram of another data structure according to some embodiments.

[0027] FIG7 is a schematic diagram of another data structure according to some embodiments.

[0028] FIG8 is a schematic diagram of another data structure according to some embodiments.

[0029] FIG9 is a flowchart of another random access method according to some embodiments.

[0030] FIG10 is a schematic structural diagram of a random access device according to some embodiments.

[0031] FIG11 is a schematic structural diagram of another random access apparatus according to some embodiments.

[0032] FIG12 is a schematic structural diagram of a communication device according to some embodiments. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions of this disclosure in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of this disclosure, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0034] It should be noted that in this disclosure, expressions such as "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described in this disclosure as "exemplarily" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of expressions such as "exemplarily" or "for example" is intended to present the relevant concepts in a detailed manner.

[0035] In the following, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first," "second," etc. may explicitly or implicitly include one or more of the features.

[0036] In the description of this disclosure, unless otherwise specified, " / " means "or." For example, A / B can mean A or B. "And / or" herein is simply a description of an association relationship between associated objects, indicating that three possible relationships exist. For example, A and / or B can mean: only A, only B, and A and B. Furthermore, "at least one" means one or more, and "a plurality" means two or more.

[0037] In some technologies, as new scenarios evolve, user equipment (UE) needs to utilize resources from multiple cells or base stations simultaneously at an earlier time for the sake of rapid multi-point coordination. However, current protocols only support configuring multiple carrier resources via carrier aggregation or dual connectivity after the UE enters the connected state, which cannot meet the requirements of these new scenarios.

[0038] Based on this, an embodiment of the present disclosure provides a random access method.

[0039] The technical solutions provided in the embodiments of the present disclosure can be applied to various mobile communication networks, for example, 5G New Radio (NR) mobile communication networks, future mobile communication networks, or multiple communication convergence systems, etc., and the embodiments of the present disclosure are not limited to this.

[0040] The network architecture of the mobile communication network (including but not limited to 3G, 4G, 5G and future mobile communication networks) in the embodiment of the present disclosure may include at least a first communication node and a second communication node. It should be understood that in this example, the first communication node in the downlink may be a network side device (for example, including but not limited to a base station), and the second communication node may be a terminal side device (for example, including but not limited to a terminal). Of course, the first communication node in the uplink may also be a terminal side device, and the second communication node may also be a network side device. In the case where the two communication nodes are device-to-device communications, the first communication node and the second communication node may both be base stations or terminals.

[0041] For example, taking the first communication node as a base station and the second communication node as a terminal, Figure 1 shows a schematic diagram of a network architecture of a mobile communication network provided by an embodiment of the present disclosure. As shown in Figure 1 , the mobile communication network includes a base station 110 and a terminal 120.

[0042] In some embodiments, base station 110 is configured to provide wireless access services to multiple terminals 120. For example, a base station provides a service coverage area (also referred to as a cell). Terminals 120 that enter this area can communicate with base station 110 via wireless signals to receive the wireless access services provided by base station 110.

[0043] In some embodiments, the base station 110 may be a base station or an evolved base station (eNB or eNodeB) in long term evolution (LTE), long term evolution advanced (LTEA), a base station device in a 5G network, or a base station in a future communication system. The base station may include various network-side devices such as various macro base stations, micro base stations, home base stations, wireless remote stations, reconfigurable intelligent surfaces (RIS), routers, and wireless fidelity (WIFI) devices.

[0044] In some embodiments, the terminal 120 can be a device with wireless transceiver capabilities, which can be deployed on land (including indoors or outdoors, handheld, wearable, or vehicle-mounted); the terminal 120 can also be deployed on the water (such as a ship); the terminal 120 can also be deployed in the air (for example, on an airplane, a balloon, and a satellite). The terminal can be a mobile phone, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical care, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, and the like. The embodiments of the present disclosure do not limit the application scenarios. The terminal may sometimes also be referred to as a user, UE, access terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal, mobile device, UE terminal, wireless communication device, UE agent or UE device, etc., which is not limited in the embodiments of the present disclosure.

[0045] It should be noted that Figure 1 is only an exemplary framework diagram. The number of devices included in Figure 1 and the names of each device are not restricted. In addition to the devices shown in Figure 1, the communication system may also include other devices (such as core network devices).

[0046] The application scenarios of the embodiments of the present disclosure are not limited. The system architecture and business scenarios described in the embodiments of the present disclosure are intended to more clearly illustrate the technical solutions of the embodiments of the present disclosure and do not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. It is known to those skilled in the art that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems.

[0047] In some embodiments, in the mobile communication network shown in FIG1 , the terminal 120 may establish a connection with the base station 110 through a random access procedure. For example, the terminal 120 may initiate a random access request (RAP) message to the base station 110, where the RAP message includes an index of a random access preamble. Accordingly, after receiving the RAP message from the terminal 120, the base station 110 may send a random access response (RAR) message to the terminal 120.

[0048] The random access response message may include a MAC subheader and a MAC RAR.

[0049] In some embodiments, the random access response message may be carried in a media access control (MAC) protocol data unit (PDU). For example, as shown in FIG2 , a MAC PDU may include one or more MAC subPDUs and padding.

[0050] Exemplarily, the MAC subPDU may include at least one of the following structures.

[0051] Structure 1. MAC subPDU includes three header fields.

[0052] For example, as shown in (a) of FIG3 , the three header fields include:

[0053] Extension field (E), used to indicate whether the current MAC subPDU includes other fields (i.e., whether the current MAC subPDU is the last one in the MAC PDU);

[0054] The type field (type, T) is used to indicate the type of the MAC subheader. For example, when T is set to 0, it indicates that the MAC subheader includes a backoff indicator (BI); when T is set to 1, it indicates that the MAC subheader includes a RAP identifier (ID). In the structure shown in (a) of Figure 3, T should be set to 0.

[0055] The RAPID corresponds to the preamble index carried in the random access request message sent by terminal 120. Thus, terminal 120 can determine whether the corresponding RAR has been successfully received based on the RAPID. For example, if the RAPID is the same as the index carried in the random access request message sent by terminal 120, the corresponding RAR is considered to have been successfully received.

[0056] Structure 2: MAC subPDU includes five header fields.

[0057] Exemplarily, as shown in (b) of FIG3 , the five header fields include.

[0058] Extension domain E;

[0059] Type field T; in the structure shown in (b) of Figure 3, T should be set to 1.

[0060] Two reserved (R) bits;

[0061] BI is used to instruct the terminal 120 to postpone initiating a random access process when the cell is overloaded.

[0062] Structure 3, as shown in Figure 4, includes RAP ID (three header fields) and MAC RAR.

[0063] Exemplarily, as shown in FIG4 , the MAC RAR includes at least one of the following items.

[0064] Uplink Grant (UL Grant) information configured by the base station 110 for the terminal 120;

[0065] A cellular radio network temporary identifier (C-RNTI) configured by the base station 110 for the terminal 120;

[0066] A timing advance (TA) command configured by the base station 110 .

[0067] The above Figures 2 to 4 are the structures of the MAC subPDU provided in some technologies. It can be seen that the structure of the MAC subPDU provided in some technologies cannot meet the requirements of the new scenarios described in the background technology, that is, the terminal cannot establish connections with multiple base stations or cells at the same time and use the resources of multiple base stations or cells.

[0068] To address the above technical issues, embodiments of the present disclosure provide a random access method. The method involves: a terminal sends random access request messages to multiple base stations, and then receives a first message through a first base station among the multiple base stations. The first message includes random access response messages from each of the multiple base stations to the terminal. In this way, the terminal can simultaneously receive random access response messages from multiple base stations, and further, establish connections with multiple base stations simultaneously to exchange data.

[0069] The random access method provided by the embodiment of the present disclosure is introduced below. For example, the random access method provided by the embodiment of the present disclosure can be applied to the mobile communication network shown in FIG1 .

[0070] As shown in FIG5 , the random access method provided by the embodiment of the present disclosure may include the following steps.

[0071] S101: A terminal sends a random access request message to multiple base stations. Correspondingly, the multiple base stations receive the random access request message sent by the terminal.

[0072] In some embodiments, after receiving a random access request message sent by a terminal, multiple base stations each generate a random access response message for the terminal. Exemplarily, the random access request message includes a random access preamble index; accordingly, the random access response message may include identification information corresponding to the random access preamble. Exemplarily, the random access response message may carry a RAPID, which corresponds to the preamble index carried by the terminal in the random access request message.

[0073] In some embodiments, a terminal may use the same or different resources (resources include at least one of the following: time domain resources, frequency domain resources, and spatial domain resources) to send random access request messages to multiple base stations. For example, the terminal may use the same resources to send random access request messages to multiple base stations; or the terminal may send random access request messages to multiple base stations on random access channels (RACHs) associated with the multiple base stations.

[0074] In some embodiments, the terminal may send random access request messages to multiple base stations in any of the following states.

[0075] Radio resource control (RRC) idle state (RRC_IDLE);

[0076] RRC inactive state (RRC_INACTIVE);

[0077] RRC connection state (RRC_CONNECTED).

[0078] It can be understood that compared to the method in which the terminal can only initiate random access in the RRC connected state in some technologies, the embodiment of the present disclosure can enable the terminal to initiate a random access request before entering the RRC connected state (for example, when the terminal is in the RRC idle state or the RRC inactive state), so that the terminal can use the base station resources earlier.

[0079] S102. The first base station obtains random access response messages from multiple base stations.

[0080] The first base station is one of the multiple base stations.

[0081] Exemplarily, the first base station can obtain random response messages from other base stations among multiple base stations except the first base station through the core network; or, the first base station can obtain random response messages from other base stations among multiple base stations except the first base station through the Xn interface (air interface).

[0082] S103: The first base station sends a first message to the terminal. The first message includes random access response messages of multiple base stations to the terminal. Accordingly, the terminal receives the first message.

[0083] In some embodiments, the above method may also be implemented as multiple base stations each sending a random access response message to the terminal.

[0084] It can be understood that compared with the method in which multiple base stations each send a random access response message to the terminal, the method in which the first base station among multiple base stations obtains the random access response messages of multiple base stations and sends them to the terminal in a unified manner can save channel resources and improve communication efficiency.

[0085] Illustratively, the structure of the first information may include the following.

[0086] Structure 1: The first message includes multiple MAC subPDUs.

[0087] Each MAC subPDU is used to carry a random access response message of a base station.

[0088] Exemplarily, the MAC subPDU includes a MAC subheader and a MAC RAR.

[0089] As an implementation, for a MAC subPDU among multiple MAC subPDUs, the MAC subheader of the MAC subPDU includes a node identification field. The node identification field is used to indicate the identifier of the base station corresponding to the MAC subPDU. The MAC RAR of the MAC subPDU includes at least one of the following items:

[0090] Uplink authorization information configured by the base station corresponding to the MAC subPDU;

[0091] Temporary authentication identifier configured by the base station corresponding to the MAC subPDU;

[0092] The timing advance command configured by the base station corresponding to the MAC subPDU.

[0093] Exemplarily, as shown in FIG6 , a node identification field (NodeIndex) may be added on the basis of the original fields of the MAC subheader to indicate the identification of the base station corresponding to the MAC subPDU.

[0094] It is understandable that in the above implementation, the first message may include multiple MAC subPDUs, each used to carry random access response messages from multiple base stations. The MAC subheader of each MAC subPDU is marked with the identifier of the base station to which the MAC subPDU corresponds, and the MAC RAR carries information configured by the base station for the terminal. In this way, the terminal can receive random access responses from different base stations to the terminal, thereby establishing connections with multiple base stations and sending and receiving data simultaneously.

[0095] Structure 2: The first message includes a MAC subPDU.

[0096] The MAC subPDU includes a MAC subheader and a MAC RAR, and the MAC RAR is used to carry random access response messages of multiple base stations.

[0097] In some embodiments, the MAC RAR may include multiple node identification fields, each of which includes an identification of a base station.

[0098] In some embodiments, the MAC RAR may also include uplink authorization information, temporary authentication identifiers, and timing advance commands configured by multiple base stations.

[0099] As an implementation method, MAC RAR includes multiple field sets; a field set includes a first field, a second field and a third field; the first field is used to carry uplink authorization information configured by a base station, the second field is used to carry a temporary authentication identifier configured by the base station, and the third field is used to carry a timing advance command configured by the base station.

[0100] For example, see Figure 7, which is a schematic diagram of the structure of a MAC RAR provided in an embodiment of the present disclosure. As shown in Figure 7, the MAC RAR may include multiple field sets, each field set corresponding to a random access response message of a base station. The field sets may include: a first field for carrying a UL Grant, a second field for carrying a Temporary C-RNTI, and a third field for carrying a TA Command.

[0101] In addition, the N field shown in FIG. 7 is a node identification field (NodeIndex), which is used to indicate the identifier of the base station corresponding to the MAC subPDU.

[0102] It can be understood that in the MAC RAR structure shown in FIG7 , the configuration parameters of each base station are independent fields, so that the user can independently schedule each base station as needed.

[0103] As another implementation, the MAC RAR includes a fourth field, a fifth field, and a sixth field.

[0104] The fourth field is used to carry uplink authorization information configured by multiple base stations; the fifth field is used to carry temporary authentication identifiers configured by multiple base stations; and the sixth field is used to carry timing advance commands configured by multiple base stations.

[0105] For example, referring to Figure 8, which is a schematic diagram of another MAC RAR structure provided by an embodiment of the present disclosure, as shown in Figure 8, UL Grants configured by multiple base stations can be coupled into a UL Grant Group and carried in the fourth field; Temporary C-RNTIs configured by multiple base stations can be coupled into a Temporary C-RNTI Group and carried in the fifth field; and Timing Advance Commands configured by multiple base stations can be coupled into a TA Command Group and carried in the sixth field.

[0106] It should be noted that the structure of the MAC RAR shown in FIG8 is for illustration only and does not represent the final number of bits of each field.

[0107] It can be understood that, in the structure shown in FIG8 , coupling the configuration parameters of multiple base stations and then jointly sending them can reduce bit overhead.

[0108] In another embodiment, the structure shown in FIG. 7 and the structure shown in FIG. 8 may be combined, that is, some configuration parameters may be sent independently, and some configuration parameters may be coupled together and sent jointly.

[0109] It is understood that, based on the method provided in the embodiments of the present disclosure, a terminal can send random access request messages to multiple base stations, and then receive a first message through a first base station among the multiple base stations. The first message includes random access response messages from each of the multiple base stations to the terminal. In this way, the terminal can simultaneously receive random access response messages from multiple base stations, and then, the terminal can simultaneously establish connections with multiple base stations to exchange data.

[0110] For ease of understanding, the random access method provided by the embodiment of the present disclosure is described below using a scenario as an example.

[0111] Exemplarily, the random access method provided in the embodiments of the present disclosure can be applied to the scenario of "artificial intelligence (AI) model training requiring multi-point collaboration".

[0112] For example, the sixth-generation mobile communication network (6G) is committed to realizing "endogenous AI", that is, providing an end-to-end operating environment for AI within the network to meet its operational needs throughout its life cycle.

[0113] The entire life cycle of AI includes data collection, model selection, model training, and inference. When distributed AI model training is performed in a wireless network where a terminal collaborates with multiple base stations, the training process generates a large number of intermediate calculation results, which may have the following impacts on the access network: 1. The data of the radio access network (RAN) is not sent by the user plane function (UPF) network element, but may be generated directly by the base station or the terminal; 2. The interaction requirements between multiple base stations and terminals increase. According to existing standards, if multiple base stations need to send training results to the terminal or the terminal needs to transmit data to multiple base stations at the same time, the terminal first needs to access the master anchor base station (master eNodeB, MeNB), and then add a secondary eNodeB (SeNB) to perform uplink and downlink duplex communication before the terminal can transmit data with multiple base stations; alternatively, multiple base stations first transmit data to the anchor base station, and then the anchor base station sends the data to the terminal in a unified manner. It is understandable that in the above process, a delay of tens or even hundreds of milliseconds may be generated, resulting in the inability to transmit intermediate results in a timely manner, which affects the training results.

[0114] Therefore, in order to enable a terminal to transmit data to multiple base stations and multiple base stations to send training results to the terminal, etc., an embodiment of the present disclosure provides a random access method. As shown in FIG9 , the random access method can be implemented as the following steps.

[0115] Sa1: The terminal sends a message (MSG) 1 to multiple base stations using the same or different resources (time domain, frequency domain or spatial domain). MSG1 includes a random access request message.

[0116] The random access request message includes a random access preamble (or an identifier of a random access preamble).

[0117] Exemplarily, the terminal may use the same resources to send random access request messages to multiple base stations; or, the terminal may send the random access request message on RACH resources associated with multiple base stations.

[0118] Exemplarily, the terminal may send random access request messages to multiple base stations in RRC_IDLE, RRC_INACTIVE, and RRC_CONNECTED states. For example, the above steps may also be applicable to RRC connection recovery, small data transmission (SDT) procedures, and handover procedures when the terminal is in the RRC_INACTIVE state.

[0119] Sa2. Multiple base stations send MSG2 to the terminal. MSG2 includes a random access response message.

[0120] Exemplarily, a first base station among the multiple base stations may uniformly send a first message to the terminal, where the first message includes random access response messages of the multiple base stations to the terminal.

[0121] Exemplarily, the random access response message includes the identifier of the base station, the UL Grant configured by the base station for the terminal, the TC-RNTI, and the TA Command.

[0122] Exemplarily, the terminal may receive random access response messages sent by multiple base stations in RRC_IDLE, RRC_INACTIVE, and RRC_CONNECTED states. For example, the above steps may also be applied to RRC connection recovery, small data transmission (SDT) procedures, and handover procedures when the terminal is in the RRC_INACTIVE state.

[0123] Sa3: The terminal establishes connections with the multiple base stations in response to random access response messages from the multiple base stations, and then receives configurations of the terminal from the multiple base stations. The multiple base stations can configure dedicated resources and bearers for the terminal.

[0124] Sa4: The terminal and multiple base stations can exchange training data or perception data based on the established connections.

[0125] Exemplarily, the terminal may send training sample data, perception requests, or perception data, etc. to multiple base stations based on the established connections. Multiple base stations may send AI training results to the terminal based on the established connections.

[0126] The above mainly introduces the solution of the embodiment of the present disclosure from the perspective of method. It can be understood that in order to realize the above functions, the random access device includes at least one of the hardware structure and software modules corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiment disclosed herein, the embodiment of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in hardware or in a computer software-driven hardware manner depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the embodiment of the present disclosure.

[0127] It is understandable that, in order to implement the above functions, the random access device includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should readily appreciate that, in conjunction with the algorithmic steps of the various examples described in the embodiments of the present disclosure, the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in hardware or in a manner driven by computer software depends on the specific application and design constraints of the technical solution. Professional and technical personnel may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present disclosure.

[0128] The embodiments of the present disclosure can divide the random access device into functional modules based on the above-mentioned method embodiments. For example, each functional module can be divided into corresponding modules for each function, or two or more functions can be integrated into a single functional module. The above-mentioned integrated modules can be implemented in either hardware or software. It should be noted that the module division in the embodiments of the present disclosure is illustrative and only represents a logical functional division. In actual implementation, other division methods may be used. The following description uses the example of dividing each functional module into corresponding modules for each function.

[0129] FIG10 is a schematic diagram of the structure of a random access device provided by an embodiment of the present disclosure. The random access device 300 is applied to a terminal and can execute the random access method provided by the above method embodiment. As shown in FIG10 , the random access device 300 includes: a sending module 301 and a receiving module 302.

[0130] The sending module 301 sends a random access request message to multiple base stations.

[0131] The receiving module 302 receives a first message, where the first message includes random access response messages from multiple base stations to the terminal.

[0132] In some embodiments, the first message includes multiple media access control sub-protocol data units (MAC subPDUs); each MAC subPDU is used to carry a random access response message of a base station.

[0133] In some embodiments, the MAC subPDU includes a MAC subheader and a MAC random access response RAR; the MAC subheader includes a node identification field, and the node identification field is used to indicate an identifier of a base station corresponding to the MAC subPDU.

[0134] In some embodiments, the MAC RAR includes at least one of the following.

[0135] Uplink authorization information configured by the base station corresponding to the MAC subPDU;

[0136] Temporary authentication identifier configured by the base station corresponding to the MAC subPDU;

[0137] The timing advance command configured by the base station corresponding to the MAC subPDU.

[0138] In some embodiments, the first message includes a MAC subPDU, the MAC subPDU includes a MAC subheader and a MAC RAR, and the MAC RAR is used to carry random access response messages of multiple base stations.

[0139] In some embodiments, the MAC RAR includes multiple node identification fields, each of which includes an identification of a base station.

[0140] In some embodiments, the MAC RAR also includes uplink authorization information, temporary authentication identifiers, and timing advance commands configured by multiple base stations.

[0141] In some embodiments, MAC RAR includes multiple field sets; a field set includes a first field, a second field and a third field; the first field is used to carry uplink authorization information configured by a base station, the second field is used to carry a temporary authentication identifier configured by the base station, and the third field is used to carry a timing advance command configured by the base station.

[0142] In some embodiments, the MAC RAR includes a fourth field, a fifth field and a sixth field; the fourth field is used to carry the uplink authorization information configured by multiple base stations; the fifth field is used to carry the temporary authentication identifier configured by multiple base stations; and the sixth field is used to carry the timing advance command configured by multiple base stations.

[0143] FIG11 is a schematic diagram of the structure of another random access device provided by an embodiment of the present disclosure. The random access device 400 is applied to a first base station and can execute the random access method provided by the above method embodiment. As shown in FIG11 , the random access device 400 includes: an acquisition module 401 and a sending module 402.

[0144] The acquisition module 401 is configured to acquire random access response messages from multiple base stations.

[0145] The sending module 402 is configured to send a first message to the terminal, where the first message includes random access response messages of multiple base stations to the terminal.

[0146] In some embodiments, the first base station is one of a plurality of base stations.

[0147] In some embodiments, the first message includes multiple MAC subPDUs; each MAC subPDU is used to carry a random access response message of a base station.

[0148] In some embodiments, the MAC subPDU includes a MAC subheader and a MAC RAR; the MAC subheader includes a node identification field, and the node identification field is used to indicate an identifier of a base station corresponding to the MAC subPDU.

[0149] In some embodiments, the MAC RAR includes at least one of the following.

[0150] Uplink grant information allocated by the MAC subPDU configuration;

[0151] Temporary authentication identifier configured by the base station corresponding to the MAC subPDU;

[0152] The timing advance command configured by the base station corresponding to the MAC subPDU.

[0153] In some embodiments, the first message includes a MAC subPDU, the MAC subPDU includes a MAC subheader and a MAC RAR, and the MAC RAR is used to carry random access response messages of multiple base stations.

[0154] In some embodiments, the MAC RAR includes multiple node identification fields, each of which includes an identification of a base station.

[0155] In some embodiments, the MAC RAR also includes uplink authorization information, temporary authentication identifiers, and timing advance commands configured by multiple base stations.

[0156] In some embodiments, MAC RAR includes multiple field sets; a field set includes a first field, a second field and a third field; the first field is used to carry uplink authorization information configured by a base station, the second field is used to carry a temporary authentication identifier configured by the base station, and the third field is used to carry a timing advance command configured by the base station.

[0157] In some embodiments, the MAC RAR includes a fourth field, a fifth field and a sixth field; the fourth field is used to carry the uplink authorization information configured by multiple base stations; the fifth field is used to carry the temporary authentication identifier configured by multiple base stations; and the sixth field is used to carry the timing advance command configured by multiple base stations.

[0158] In the case of implementing the functions of the above-mentioned integrated modules in hardware, the embodiments of the present disclosure provide a structure of the communication device involved in the above-mentioned embodiments. As shown in Figure 12, the communication device 500 includes: a processor 502 and a bus 504. In some embodiments, the communication device 500 may also include a memory 501; in some embodiments, the communication device 500 may also include a communication interface 503.

[0159] The processor 502 may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the embodiments of the present disclosure. The processor 502 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. The processor 502 may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the embodiments of the present disclosure. The processor 502 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

[0160] The communication interface 503 is used to connect to other devices via a communication network, such as Ethernet, wireless access network, wireless local area network (WLAN), etc.

[0161] The memory 501 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0162] As an implementation, the memory 501 may exist independently of the processor 502. The memory 501 may be connected to the processor 502 via a bus 504 and used to store instructions or program codes. When the processor 502 calls and executes the instructions or program codes stored in the memory 501, the random access method provided in the embodiment of the present disclosure can be implemented. In another implementation, the memory 501 may also be integrated with the processor 502.

[0163] Bus 504 can be an Extended Industry Standard Architecture (EISA) bus, etc. Bus 504 can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, FIG12 shows only one thick line, but this does not mean that there is only one bus or only one type of bus.

[0164] Some embodiments of the present disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium) having computer program instructions stored therein. When the computer program instructions are executed on a computer, the computer performs the random access method described in any of the above embodiments. Exemplarily, the above-mentioned computer-readable storage medium may include, but is not limited to: a magnetic storage device (e.g., a hard disk, a floppy disk, or a magnetic tape, etc.), an optical disk (e.g., a compact disk (CD), a digital versatile disk (DVD), etc.), a smart card, and a flash memory device (e.g., an erasable programmable read-only memory (EPROM), a card, a stick, or a key drive, etc.). The various computer-readable storage media described in the present disclosure may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0165] An embodiment of the present disclosure provides a computer program product comprising instructions. When the computer program product is run on a computer, the computer is enabled to execute the random access method described in any one of the above embodiments.

[0166] The above is only a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or replacements within the technical scope disclosed in the present disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A random access method, wherein: The method is applied to a terminal and includes: Sending a random access request message to multiple base stations; A first message is received, where the first message includes a random access response message from each of the multiple base stations to the terminal.

2. The method according to claim 1, characterized in that The first message includes a plurality of media access control sub-protocol data units MAC subPDU; each MAC subPDU is used to carry a random access response message of a base station.

3. The method according to claim 2, wherein: The MAC subPDU includes a MAC subheader and a MAC random access response RAR; the MAC subheader includes a node identification field, and the node identification field is used to indicate an identification of a base station corresponding to the MAC subPDU.

4. The method according to claim 3, wherein: The MAC RAR includes at least one of the following: Uplink authorization information configured by the base station corresponding to the MAC subPDU; A temporary authentication identifier configured by the base station corresponding to the MAC subPDU; The timing advance command configured by the base station corresponding to the MAC subPDU.

5. The method according to claim 1, wherein: The first message includes a MAC subPDU, the MAC subPDU includes a MAC subheader and a MAC RAR, and the MAC RAR is used to carry the random access response messages of the multiple base stations.

6. The method according to claim 5, wherein: The MAC RAR includes a plurality of node identification fields, and each of the plurality of node identification fields includes an identification of a base station.

7. The method according to claim 5, wherein: The MAC RAR also includes uplink authorization information, temporary authentication identifiers and timing advance commands configured by the multiple base stations.

8. The method according to claim 7, wherein: The MAC RAR includes multiple field sets; wherein a field set includes a first field, a second field and a third field; wherein the first field is used to carry uplink authorization information configured by a base station, the second field is used to carry a temporary authentication identifier configured by the base station, and the third field is used to carry a timing advance command configured by the base station.

9. The method according to claim 7, wherein: The MAC RAR includes a fourth field, a fifth field and a sixth field; The fourth field is used to carry uplink authorization information configured by each of the multiple base stations; The fifth field is used to carry temporary authentication identifiers configured by each of the multiple base stations; The sixth field is used to carry the timing advance commands configured by each of the multiple base stations.

10. A random access method, wherein: The method is applied to a first base station and includes: Obtaining random access response messages from multiple base stations; A first message is sent to a terminal, where the first message includes random access response messages of multiple base stations to the terminal respectively.

11. The method according to claim 10, wherein: The first base station is one of the multiple base stations.

12. The method according to claim 10, wherein: The first message includes multiple MAC subPDUs; each MAC subPDU is used to carry a random access response message of a base station.

13. The method according to claim 12, wherein: The MAC subPDU includes a MAC subheader and a MAC RAR; the MAC subheader includes a node identification field, and the node identification field is used to indicate an identification of a base station corresponding to the MAC subPDU.

14. The method according to claim 13, wherein: The MAC RAR includes at least one of the following: Uplink authorization information configured by the base station corresponding to the MAC subPDU; A temporary authentication identifier configured by the base station corresponding to the MAC subPDU; The timing advance command configured by the base station corresponding to the MAC subPDU.

15. The method according to claim 10, wherein: The first message includes a MAC subPDU, the MAC subPDU includes a MAC subheader and a MAC RAR, and the MAC RAR is used to carry the random access response messages of the multiple base stations.

16. The method according to claim 15, wherein: The MAC RAR includes a plurality of node identification fields, and each of the plurality of node identification fields includes an identification of a base station.

17. The method according to claim 15, wherein: The MAC RAR also includes uplink authorization information, temporary authentication identifiers and timing advance commands configured by the multiple base stations.

18. The method according to claim 17, wherein: The MAC RAR includes multiple field sets; wherein a field set includes a first field, a second field and a third field; wherein the first field is used to carry uplink authorization information configured by a base station, the second field is used to carry a temporary authentication identifier configured by the base station, and the third field is used to carry a timing advance command configured by the base station.

19. The method according to claim 17, wherein: The MAC RAR includes a fourth field, a fifth field and a sixth field; The fourth field is used to carry uplink authorization information configured by each of the multiple base stations; The fifth field is used to carry temporary authentication identifiers configured by each of the multiple base stations; The sixth field is used to carry the timing advance commands configured by each of the multiple base stations.

20. A communication device, comprising: Memory and processor; Memory and processor coupling; The memory is used to store instructions executable by the processor; When the processor executes the instructions, the random access method according to any one of claims 1 to 19 is performed.

21. A computer-readable storage medium, wherein: The computer-readable storage medium stores computer instructions, and when the computer instructions are executed on an electronic device, the electronic device executes the random access method according to any one of claims 1 to 19.

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