An access method and device

Abstract

The present application discloses an access method and apparatus. It relates to the field of wireless communication. The network device determines the type of the terminal according to the RO where the pilot is located; wherein, if the RO belongs to the first RO set, the terminal is a first type of terminal, and if the RO belongs to the second RO set, the terminal is a second type of terminal, and the first RO set and the second RO set have no intersection, or the configuration information of the first RO set is different from the configuration information of the second RO set.

Description

Technical Field

[0001] This application relates to the field of wireless communication technologies, and in particular, to an access method and apparatus. Background Art

[0002] In the development of 5G NR technology, a type of terminal with reduced capabilities has emerged, called a RedCap terminal. Compared with a general terminal (which can also be called a non-RedCap terminal), a RedCap terminal aims to reduce the implementation complexity and cost of the terminal. The maximum bandwidth supported by a RedCap terminal is less than that supported by a general terminal. For example, when the carrier frequency is below 6 GHz, the maximum bandwidth of a general terminal is 100 MHz, while the maximum bandwidth of a RedCap terminal is only 20 MHz. The minimum number of receiving antennas of a RedCap terminal is less than or equal to that of a general terminal, and its receiving ability is lower than that of a general terminal. For example, the minimum number of receiving antennas of a general terminal is 4 or 2, while the minimum number of receiving antennas of a RedCap terminal is 2 or 1.

[0003] Regardless of the type of terminal, it needs to initiate random access to the network device in order to obtain the communication service of the network device. If the network device can know the type of the terminal in advance, it can perform uplink or downlink scheduling in a targeted manner to make up for the loss of the receiving ability of the RedCap terminal, thereby improving the utilization rate of network resources.

[0004] Therefore, how to identify the type of the terminal in the access phase to improve transmission reliability is a problem that needs to be solved currently. Summary of the Invention

[0005] Embodiments of this application provide an access method and apparatus for identifying the type of a terminal.

[0006] In a first aspect, an access method is provided, including:

[0007] The network device receives a pilot sent by the terminal;

[0008] The network device determines the type of the terminal according to the RO where the pilot is located; wherein, if the RO belongs to the first RO set, the terminal is a first type of terminal, and if the RO belongs to the second RO set, the terminal is a second type of terminal. The first RO set and the second RO set have no intersection, or the configuration information of the first RO set is different from the configuration information of the second RO set.

[0009] Optionally, the first type of terminal initiates random access in the first uplink bandwidth part (BWP), and the second type of terminal initiates random access in the second uplink BWP. The configuration information of the first uplink BWP includes the configuration information of the first RO set, and the configuration information of the second uplink BWP includes the configuration information of the second RO set;

[0010] Alternatively, the first type of terminal and the second type of terminal initiate random access in a third uplink BWP, where the third uplink BWP is an uplink BWP shared by the first type of terminal and the second type of terminal. The configuration information of the third uplink BWP includes the configuration information of the first RO set and the configuration information of the second RO set.

[0011] Optionally, the network device determines the type of random access initiated by the terminal according to the pilot sent by the terminal. Among them, if the pilot belongs to the first pilot set, the random access initiated by the terminal is 4-step random access; if the pilot belongs to the second pilot set, the random access initiated by the terminal is 2-step random access, and the first pilot set and the second pilot set have no intersection.

[0012] Optionally, the first pilot set includes a first pilot subset and a second pilot subset. The first pilot subset corresponds to terminals with coverage enhancement, and the second pilot subset corresponds to terminals without coverage enhancement. The method further includes:

[0013] If the pilot sent by the terminal belongs to the first pilot subset, the network device determines that the terminal is a terminal with coverage enhancement and the random access initiated is 4-step random access; if the pilot sent by the terminal belongs to the second pilot subset, the terminal is a terminal without coverage enhancement and the random access initiated is 4-step random access;

[0014] Alternatively, the first pilot set includes a first pilot subset and a second pilot subset, and the second pilot set includes a third pilot subset and a fourth pilot subset. The first pilot subset and the third pilot subset correspond to terminals with coverage enhancement, and the second pilot subset and the fourth pilot subset correspond to terminals without coverage enhancement. The method further includes:

[0015] If the pilot sent by the terminal belongs to the first pilot subset, the network device determines that the terminal is a coverage enhancement terminal and the random access initiated is 4-step random access; if the pilot sent by the terminal belongs to the second pilot subset, the network device determines that the terminal is a non-coverage enhancement terminal and the random access initiated is 4-step random access; if the pilot sent by the terminal belongs to the third pilot subset, the network device determines that the terminal is a coverage enhancement terminal and the random access initiated is 2-step random access; if the pilot sent by the terminal belongs to the fourth pilot subset, the network device determines that the terminal is a non-coverage enhancement terminal and the random access initiated is 2-step random access.

[0016] Optionally, the first RO set includes a first RO subset and a second RO subset, the first RO subset corresponds to a coverage enhancement terminal, and the second RO subset corresponds to a non-coverage enhancement terminal; the method further includes:

[0017] If the RO where the pilot sent by the terminal is located belongs to the first RO subset, the network device determines that the terminal is the first type of terminal and is a coverage enhancement terminal; if the RO where the pilot sent by the terminal is located belongs to the second RO subset, the network device determines that the terminal is the first type of terminal and is a non-CE terminal;

[0018] Alternatively, the first RO set includes a first RO subset and a second RO subset, the second RO set includes a third RO subset and a fourth RO subset, the first RO subset and the third RO subset correspond to coverage enhancement terminals, and the second RO subset and the fourth RO subset correspond to non-coverage enhancement terminals; the method further includes:

[0019] If the RO where the pilot sent by the terminal is located belongs to the first RO subset, the network device determines that the terminal is the first type of terminal and is a coverage enhancement terminal; if the RO where the pilot sent by the terminal is located belongs to the second RO subset, the network device determines that the terminal is the first type of terminal and is a non-coverage enhancement terminal; if the RO where the pilot sent by the terminal is located belongs to the third RO subset, the network device determines that the terminal is the second type of terminal and is a coverage enhancement terminal; if the RO where the pilot sent by the terminal is located belongs to the fourth RO subset, the network device determines that the terminal is the second type of terminal and is a non-coverage enhancement terminal.

[0020] Optionally, the maximum bandwidth supported by the first type of terminal is different from the maximum bandwidth supported by the second type of terminal, and the minimum number of receiving antennas of the first type of terminal is different from the minimum number of receiving antennas of the second type of terminal.

[0021] In a second aspect, an access method is provided, including:

[0022] The terminal sends a pilot to the network device in a random access channel opportunity RO corresponding to the type of the terminal.

[0023] Wherein, if the terminal is a first type of terminal, the pilot is sent in an RO in a first RO set; if the terminal is a second type of terminal, the pilot is sent in an RO in a second RO set, and the first RO set and the second RO set have no intersection, or the configuration information of the first RO set is different from the configuration information of the second RO set.

[0024] Optionally, the first type of terminal initiates random access in a first uplink bandwidth part BWP, and the second type of terminal initiates random access in a second uplink BWP. The configuration information of the first uplink BWP includes the configuration information of the first RO set, and the configuration information of the second uplink BWP includes the configuration information of the second RO set.

[0025] Or, the first type of terminal and the second type of terminal initiate random access in a third uplink BWP. The third uplink BWP is an uplink BWP shared by the first type of terminal and the second type of terminal, and the configuration information of the third uplink BWP includes the configuration information of the first RO set and the configuration information of the second RO set.

[0026] Optionally, before the terminal sends a pilot to the network device according to an RO corresponding to the type of the terminal, the method further includes:

[0027] The terminal selects a corresponding pilot according to the type of random access to be initiated. Wherein, if the random access to be initiated is 4-step random access, a pilot is selected from a first pilot set; if the random access to be initiated is 2-step random access, a pilot is selected from a second pilot set, and the first pilot set and the second pilot set have no intersection.

[0028] Optionally, the first pilot set includes a first pilot subset and a second pilot subset. The first pilot subset corresponds to a terminal with coverage enhancement, and the second pilot subset corresponds to a terminal without coverage enhancement. The terminal selecting a corresponding pilot includes:

[0029] If the random access to be initiated by the terminal is 4-step random access and the terminal is a terminal with coverage enhancement, the terminal selects a pilot from the first pilot subset; if the random access to be initiated by the terminal is 4-step random access and the terminal is a terminal without coverage enhancement, the terminal selects a pilot from the second pilot subset.

[0030] Alternatively, the first pilot set includes a first pilot subset and a second pilot subset, the second pilot set includes a third pilot subset and a fourth pilot subset, the first pilot subset and the third pilot subset correspond to enhanced coverage terminals, and the second pilot subset and the fourth pilot subset correspond to non-enhanced coverage terminals; the terminal selects a corresponding pilot, including:

[0031] If the random access to be initiated by the terminal is a 4-step random access and the terminal is an enhanced coverage terminal, the terminal selects a pilot from the first pilot subset; if the random access to be initiated by the terminal is a 4-step random access and the terminal is a non-enhanced coverage terminal, the terminal selects a pilot from the second pilot subset; if the random access to be initiated by the terminal is a 2-step random access and the terminal is an enhanced coverage terminal, the terminal selects a pilot from the third pilot subset; if the random access to be initiated by the terminal is a 2-step random access and the terminal is a non-enhanced coverage terminal, the terminal selects a pilot from the fourth pilot subset.

[0032] Optionally, the first RO set includes a first RO subset and a second RO subset, the first RO subset corresponds to enhanced coverage terminals, and the second RO subset corresponds to non-enhanced coverage terminals; the terminal sends a pilot to the network device in an RO corresponding to the type of the terminal, including:

[0033] If the terminal is a first type of terminal and the terminal is an enhanced coverage terminal, the terminal selects an RO from the first RO subset; if the terminal is a second type of terminal and the terminal is a non-enhanced coverage terminal, the terminal selects an RO from the second RO subset;

[0034] Alternatively, the first RO set includes a first RO subset and a second RO subset, the second RO set includes a third RO subset and a fourth RO subset, the first RO subset and the third RO subset correspond to enhanced coverage terminals, and the second RO subset and the fourth RO subset correspond to non-enhanced coverage terminals; the terminal sends a pilot to the network device in an RO corresponding to the type of the terminal, including:

[0035] If the terminal is the first type of terminal and the terminal is a coverage-enhanced terminal, the terminal selects an RO from the first RO subset; if the terminal is the first type of terminal and the terminal is a non-coverage-enhanced terminal, the terminal selects an RO from the second RO subset; if the terminal is the second type of terminal and the terminal is a coverage-enhanced terminal, the terminal selects an RO from the third RO subset; if the terminal is the second type of terminal and the terminal is a non-coverage-enhanced terminal, the terminal selects an RO from the fourth RO subset.

[0036] In the above embodiments of the present application, since the first RO set corresponds to the first type of terminal and the second RO set corresponds to the second type of terminal, the network device can determine the type of the terminal according to the RO where the pilot sent by the terminal is located, and thus can perform uplink or downlink scheduling on the terminal in a targeted manner, improving the utilization rate of network resources.

[0037] Optionally, the maximum bandwidth supported by the first type of terminal is different from the maximum bandwidth supported by the second type of terminal, and / or the minimum number of receiving antennas of the first type of terminal is different from the minimum number of receiving antennas of the second type of terminal.

[0038] In a third aspect, an access method is provided, including:

[0039] The network device receives a pilot sent by a terminal, and the random access channel opportunity RO where the pilot is located belongs to the RO set shared by the first type of terminal and the second type of terminal;

[0040] The network device determines the type of the terminal according to the pilot set to which the pilot belongs; wherein, if the pilot belongs to the first pilot set, the terminal is the first type of terminal, and if the pilot belongs to the second pilot set, the terminal is the second type of terminal, and the first pilot set and the second pilot set have no intersection.

[0041] Optionally, the first type of terminal initiates random access in the first uplink bandwidth part BWP, and the second type of terminal initiates random access in the second uplink BWP. The configuration information of the first uplink BWP or the configuration information of the second uplink BWP includes the configuration information of the RO set;

[0042] Alternatively, the first type of terminal and the second type of terminal initiate random access in the third uplink BWP. The third uplink BWP is the uplink BWP shared by the first type of terminal and the second type of terminal, and the configuration information of the third uplink BWP includes the configuration information of the RO set.

[0043] Optionally, the RO set includes a first RO set and a second RO set, where the first RO set and the second RO set have no intersection, or the configuration information of the first RO set is different from the configuration information of the second RO set;

[0044] The method further includes:

[0045] The network device determines the type of random access initiated by the terminal according to the RO where the pilot is located; where, if the RO where the pilot is located belongs to the first RO set, the random access initiated by the terminal is 4-step random access, and if the RO where the pilot is located belongs to the second RO set, the random access initiated by the terminal is 2-step random access.

[0046] Optionally, the first pilot set includes a first pilot subset and a second pilot subset, the second pilot set includes a third pilot subset and a fourth pilot subset, the first pilot subset and the third pilot subset correspond to terminals with coverage enhancement, and the second pilot subset and the fourth pilot subset correspond to terminals without coverage enhancement;

[0047] The method further includes:

[0048] If the RO where the pilot sent by the terminal is located belongs to the first RO set, the network device determines the type of the terminal and whether it is a terminal with coverage enhancement according to the pilot subset to which the pilot belongs, where, if the pilot belongs to the first pilot subset, the terminal is a first type of terminal and a terminal with coverage enhancement; if the pilot belongs to the second pilot subset, the terminal is a first type of terminal and a terminal without coverage enhancement; if the pilot belongs to the third pilot subset, the terminal is a second type of terminal and a terminal with coverage enhancement; if the pilot belongs to the fourth pilot subset, the terminal is a second type of terminal and a terminal without coverage enhancement.

[0049] Optionally, the method further includes:

[0050] If the RO where the pilot sent by the terminal is located belongs to the second RO set, the network device determines the type of the terminal and whether it is a terminal with coverage enhancement according to the pilot subset to which the pilot belongs, where, if the pilot belongs to the first pilot subset, the terminal is a first type of terminal and a terminal with coverage enhancement; if the pilot belongs to the second pilot subset, the terminal is a first type of terminal and a terminal without coverage enhancement; if the pilot belongs to the third pilot subset, the terminal is a second type of terminal and a terminal with coverage enhancement; if the pilot belongs to the fourth pilot subset, the terminal is a second type of terminal and a terminal without coverage enhancement.

[0051] Optionally, the first RO set includes a first RO subset and a second RO subset. The first RO subset corresponds to terminals with coverage enhancement, and the second RO subset corresponds to terminals without coverage enhancement. The method further includes:

[0052] If the RO where the pilot sent by the terminal is located belongs to the first RO subset, the network device determines that the terminal is a terminal with coverage enhancement and the random access initiated is 4-step random access; if the RO where the pilot sent by the terminal is located belongs to the second RO subset, the network device determines that the terminal is a terminal without coverage enhancement and the random access initiated is 2-step random access.

[0053] Alternatively, the first RO set includes a first RO subset and a second RO subset, and the second RO set includes a third RO subset and a fourth RO subset. The first RO subset and the third RO subset correspond to terminals with coverage enhancement, and the second RO subset and the fourth RO subset correspond to terminals without coverage enhancement. The method further includes:

[0054] If the RO where the pilot sent by the terminal is located belongs to the first RO subset, the network device determines that the terminal is a terminal with coverage enhancement and the random access initiated is 4-step random access; if the RO where the pilot sent by the terminal is located belongs to the second RO subset, the network device determines that the terminal is a terminal without coverage enhancement and the random access initiated is 4-step random access; if the RO where the pilot sent by the terminal is located belongs to the third RO subset, the network device determines that the terminal is a terminal with coverage enhancement and the random access initiated is 2-step random access; if the RO where the pilot sent by the terminal is located belongs to the fourth RO subset, the network device determines that the terminal is a terminal without coverage enhancement and the random access initiated is 2-step random access.

[0055] Optionally, the maximum bandwidth supported by the first type of terminal is less than the maximum bandwidth supported by the second type of terminal, and / or the minimum number of receiving antennas of the first type of terminal is less than the number of receiving antennas of the second type of terminal.

[0056] Optionally, the maximum bandwidth supported by the first type of terminal is different from the maximum bandwidth supported by the second type of terminal, and / or the minimum number of receiving antennas of the first type of terminal is different from the minimum number of receiving antennas of the second type of terminal.

[0057] In a fourth aspect, an access method is provided, including:

[0058] The terminal sends a pilot corresponding to the type of the terminal to the network device, and the random access channel opportunity (RO) where the pilot is located belongs to the RO set shared by the first type of terminal and the second type of terminal;

[0059] Among them, if the terminal is the first type of terminal, the pilot belongs to the first pilot set; if the terminal is the second type of terminal, the pilot belongs to the second pilot set, and the first pilot set and the second pilot set have no intersection.

[0060] Optionally, the first type of terminal initiates random access in the first uplink bandwidth part (BWP), and the second type of terminal initiates random access in the second uplink BWP. The configuration information of the first uplink BWP or the configuration information of the second uplink BWP includes the configuration information of the RO set.

[0061] Alternatively, the first type of terminal and the second type of terminal initiate random access in the third uplink BWP. The third uplink BWP is the uplink BWP shared by the first type of terminal and the second type of terminal, and the configuration information of the third uplink BWP includes the configuration information of the RO set.

[0062] Optionally, the RO set includes a first RO set and a second RO set. The first RO set and the second RO set have no intersection, or the configuration information of the first RO set is different from the configuration information of the second RO set.

[0063] Before the terminal sends the pilot corresponding to the type of the terminal to the network device, the method further includes:

[0064] The terminal selects an RO from the first RO set or the second RO set according to the type of random access to be initiated by the terminal. Among them, if the random access to be initiated is 4-step random access, the RO is selected from the first RO set; if the random access to be initiated is 2-step random access, the RO is selected from the second RO set.

[0065] Optionally, the first pilot set includes a first pilot subset and a second pilot subset, and the second pilot set includes a third pilot subset and a fourth pilot subset. The first pilot subset and the third pilot subset correspond to terminals with coverage enhancement, and the second pilot subset and the fourth pilot subset correspond to terminals without coverage enhancement.

[0066] Before the terminal sends the pilot corresponding to the type of the terminal to the network device, the method further includes:

[0067] If the random access initiated by the terminal is a 4-step random access, the terminal is a first-type terminal, and the terminal is a coverage-enhanced terminal, then a pilot is selected from the first pilot subset; if the random access initiated by the terminal is a 4-step random access, the terminal is a first-type terminal, and the terminal is a non-coverage-enhanced terminal, then a pilot is selected from the second pilot subset; if the random access initiated by the terminal is a 4-step random access, the terminal is a second-type terminal, and the terminal is a coverage-enhanced terminal, then a pilot is selected from the third pilot subset; if the random access initiated by the terminal is a 4-step random access, the terminal is a second-type terminal, and the terminal is a non-coverage-enhanced terminal, then a pilot is selected from the fourth pilot subset.

[0068] Optionally, the method further includes:

[0069] If the random access initiated by the terminal is a 2-step random access, the terminal is a first-type terminal, and the terminal is a coverage-enhanced terminal, then a pilot is selected from the first pilot subset; if the random access initiated by the terminal is a 2-step random access, the terminal is a first-type terminal, and the terminal is a non-coverage-enhanced terminal, then a pilot is selected from the second pilot subset; if the random access initiated by the terminal is a 2-step random access, the terminal is a second-type terminal, and the terminal is a coverage-enhanced terminal, then a pilot is selected from the third pilot subset; if the random access initiated by the terminal is a 2-step random access, the terminal is a second-type terminal, and the terminal is a non-coverage-enhanced terminal, then a pilot is selected from the fourth pilot subset.

[0070] Optionally, the first RO set includes a first RO subset and a second RO subset. The first RO subset corresponds to a coverage-enhanced terminal, and the second RO subset corresponds to a non-coverage-enhanced terminal. The terminal sending a pilot corresponding to the type of the terminal to the network device includes:

[0071] If the random access to be initiated by the terminal is a 4-step random access and the terminal is a coverage-enhanced terminal, then the terminal selects an RO from the first RO subset; if the random access to be initiated by the terminal is a 4-step random access and the terminal is a non-coverage-enhanced terminal, then the terminal selects an RO from the second RO subset;

[0072] Alternatively, the first RO set includes a first RO subset and a second RO subset, and the second RO set includes a third RO subset and a fourth RO subset. The first RO subset and the third RO subset correspond to coverage-enhanced terminals, and the second RO subset and the fourth RO subset correspond to non-coverage-enhanced terminals. The terminal sending a pilot corresponding to the type of the terminal to the network device includes:

[0073] If the random access to be initiated by the terminal is a 4-step random access and the terminal is a coverage-enhanced terminal, the terminal selects an RO from the first RO subset; if the random access to be initiated by the terminal is a 4-step random access and the terminal is a non-coverage-enhanced terminal, the terminal selects an RO from the second RO subset; if the random access to be initiated by the terminal is a 2-step random access and the terminal is a coverage-enhanced terminal, the terminal selects an RO from the third RO subset; if the random access to be initiated by the terminal is a 2-step random access and the terminal is a non-coverage-enhanced terminal, the terminal selects an RO from the fourth RO subset.

[0074] Optionally, the maximum bandwidth supported by the first type of terminal is different from the maximum bandwidth supported by the second type of terminal, and / or the minimum number of receiving antennas of the first type of terminal is different from the minimum number of receiving antennas of the second type of terminal.

[0075] In a fifth aspect, a communication device is provided, including: a processor and a memory;

[0076] The memory stores computer instructions;

[0077] The processor is configured to read the computer instructions and execute the method according to any one of the first aspect to the fourth aspect as described above.

[0078] In a sixth aspect, a readable computer storage medium is provided, including: the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to cause a computer to execute the method according to any one of the first aspect to the fourth aspect as described above.

[0079] In a seventh aspect, a computer program product is provided, including: when the computer program product is called by a computer, the computer is caused to execute the method according to any one of the first aspect to the fourth aspect as described above.

[0080] In the above embodiments of the present application, since the first pilot set corresponds to the first type of terminal and the second pilot set corresponds to the second type of terminal, the network device can determine the type of the terminal according to the pilot set to which the pilot sent by the terminal belongs, thereby realizing the identification of the terminal type in the access stage, and then can perform uplink or downlink scheduling on the terminal specifically, improving the utilization rate of network resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0081] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the embodiments of the present application. Obviously, the accompanying drawings introduced below are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0082] Figure 1 Exemplarily shows a schematic diagram of the system architecture applicable to the embodiments of the present application;

[0083] Figure 2 Exemplarily shows a schematic diagram of the process of the 4-step random access method;

[0084] Figure 3 Exemplarily shows a schematic diagram of the process of the 2-step random access method;

[0085] Figure 4 Exemplarily shows a block diagram of the access process provided by the embodiments of the present application;

[0086] Figure 5 Exemplarily shows based on Figure 4 The schematic diagram of the 4-step random access signaling interaction implemented;

[0087] Figure 6 Exemplarily shows based on Figure 4 The schematic diagram of the 2-step random access signaling interaction implemented;

[0088] Figure 7 Exemplarily shows a block diagram of the access process provided by another embodiment of the present application;

[0089] Figure 8 Exemplarily shows based on Figure 6 The schematic diagram of the 4-step random access signaling interaction implemented;

[0090] Figure 9 Exemplarily shows based on Figure 6 The schematic diagram of the 2-step random access signaling interaction implemented;

[0091] Figure 10 Exemplarily shows a schematic diagram of the structure of the network device provided by the embodiments of the present application;

[0092] Figure 11 Exemplarily shows a schematic diagram of the structure of the terminal provided by the embodiments of the present application;

[0093] Figure 12 Exemplarily shows a schematic diagram of the structure of the communication device provided by the embodiments of the present application. Detailed implementation manners

[0094] To make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings. Apparently, the described embodiments are only a part rather than all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0095] Some terms in the embodiments of the present application are explained below to facilitate the understanding of those skilled in the art.

[0096] (1) In the embodiments of the present application, the nouns "network" and "system" are often used interchangeably, but those skilled in the art can understand their meanings.

[0097] (2) In the embodiments of the present application, the term "a plurality of" means two or more, and other quantifiers are similar.

[0098] (3) "And / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0099] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0100] Figure 1 An exemplary system architecture diagram applicable to the embodiments of the present application is shown. As shown in the figure, the system architecture diagram includes: a network device 101, terminals (102a, 102b). The network device 101 and the terminals (102a, 102b) interact through a wireless communication network. The number of terminals can be more. Figure 1 Only two terminals are taken as an example for description.

[0101] The network device 101 is a device that provides wireless communication functions for the terminal, including but not limited to: gNB in 5G, radio network controller (RNC), node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (for example, home evolved nodeB, or home node B, HNB), BaseBand Unit (BBU), transmitting and receiving point (TRP), transmitting point (TP), mobile switching center, etc. The base station in this application can also be a device that provides wireless communication functions for the terminal in other future possible communication systems. In the embodiments of this application, "base station (gNB)" is used as an example for description.

[0102] The terminal (102a, 102b) is a device that can provide voice and / or data connectivity to users. For example, terminal devices include handheld devices with wireless connection functions, in-vehicle devices, etc. Currently, terminal devices can be: mobile phones, tablet computers, laptop computers, palmtop computers, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, or wireless terminals in smart home, etc.

[0103] Among them, the terminal 102a and the terminal 102b belong to different types of terminals. The terminal 102a is a first-type terminal, and the terminal 102b is a second-type terminal. Compared with the second-type terminal, the first-type terminal can be a terminal with different transmission capabilities. For example, the maximum bandwidth supported by the first-type terminal is different from the maximum bandwidth supported by the second-type terminal, and / or the minimum number of receiving antennas of the first-type terminal is different from the minimum number of receiving antennas of the second-type terminal. Further, the maximum bandwidth supported by the first-type terminal is less than the maximum bandwidth supported by the second-type terminal, and / or the minimum number of receiving antennas of the first-type terminal is less than or equal to the minimum number of receiving antennas of the second-type terminal. Exemplarily, the first-type terminal can be called a RedCap terminal, and the second-type terminal can be called a general terminal or a non-RedCap terminal. Different types of terminals can also be terminals that are different in other aspects. For example, they can be terminals of different service types, such as terminals for small data transmission (SDT) services and non-small data transmission type terminals, or terminals that support random access network service slicing and terminals that do not support service slicing. Different types of terminals can also be terminals that are combinations of the above-mentioned various different bandwidths, antenna numbers, and service types. In the following description, RedCap terminals and general terminals are taken as examples for illustration.

[0104] The above-mentioned first-type terminals can be further divided into terminals with coverage enhancement (CE) and terminals without coverage enhancement. The above-mentioned second-type terminals can also be further divided into terminals with coverage enhancement and terminals without coverage enhancement. Terminals with coverage enhancement can also be called terminals that support coverage enhancement or terminals with coverage enhancement capabilities. In 4-step random access (4-step RACH), terminals with coverage enhancement capabilities may repeat the transmission of Msg3 to carry RRC establishment request information. Terminals without coverage enhancement capabilities do not support the repeated transmission of Msg3. Therefore, terminals with coverage enhancement can also be considered as terminals that support the repeated transmission of Msg3, or terminals that require / trigger the repeated transmission of Msg3; terminals without coverage enhancement can also be considered as terminals that do not support the repeated transmission of Msg3, or terminals that do not require / trigger the repeated transmission of Msg3.

[0105] Whether it is the terminal 102a or the terminal 102b, it is necessary to initiate random access to the network device 101. After accessing the network device 101, it can obtain the communication service provided by the network device 101. Both the terminal 102a and the terminal 102b can initiate 4-step random access, where RACH is the English abbreviation of Random Access CHannel, that is, random access channel access and 2-step random access (2-step RACH access).

[0106] Figure 2 An exemplary schematic diagram of the 4-step random access process is shown. The gNB broadcasts the configuration information of the 4-step random access to the terminal (User Equipment, UE). The UE sends a preamble to the gNB on the Physical Random Access Channel (PRACH) according to this configuration information, that is, it sends Message 1 (Msg1); the gNB sends Msg2 to the terminal according to the received Msg1, and Msg2 carries a Random Access Response (RAR); the terminal sends Msg3 to the gNB according to the received Msg2, and Msg3 carries a Radio Resource Control (RRC) request, and the gNB sends Msg4 to the terminal according to Msg3 to notify the terminal whether the random access is successful.

[0107] Figure 3 An exemplary schematic diagram of the 2-step random access process is shown.

[0108] The gNB broadcasts the configuration information of the 2-step random access (2-step RACH) to the terminal. The terminal sends Message MsgA to the gNB according to this configuration information, and MsgA includes a preamble and a Physical Uplink Shared Channel (PUSCH); the gNB sends MsgB to the terminal according to MsgA. If MsgB contains a successful RAR (that is, successRAR), the random access process ends; if MsgB contains a fallback RAR (that is, fallbackRAR), the random access process falls back to the 4-step random access. At this time, the function of MsgB is similar to Msg2 (including RAR) in the 4-step random access, and the terminal will send Msg3 according to the scheduling of fallbackRAR and receive Msg4.

[0109] In the terminal access stage of the embodiments of the present application, the identification of the terminal type is realized, so that uplink scheduling or downlink scheduling can be carried out targeted, the network resource utilization rate is improved, and thus the system performance and / or system reliability are improved. For example, if the network device identifies that the terminal initiating the random access in the terminal access stage (also called the RACH stage) is a RedCap terminal, the transmission reliability can be improved when scheduling downlink transmission (such as RAR in the 4-step random access or MsgB in the 2-step random access), so as to make up for the loss of the receiving ability of the RedCap UE.

[0110] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0111] Figure 4 The block diagram of the access process provided by the embodiments of the present application is exemplarily shown. Based on this process, the network device can identify the type of the terminal according to the random access channel occasion (RACH Occasion, RO) where the pilot sent by the terminal is located, that is, determine whether the terminal is a first-type terminal or a second-type terminal.

[0112] Among them, a random access channel occasion (RO), also known as a physical random access channel occasion (PRACH Occasion), is the time-frequency resource for the terminal to send a random access pilot and for the base station to receive / detect a random access pilot. The base station can indicate the time-frequency resources of multiple ROs to the terminal device, that is, the RO set. For example, the base station can indicate the RO set by indicating the time domain period of the RO, the starting position in a time domain period, the starting position in the frequency domain, and the number of ROs in the frequency domain. A certain terminal device sending a random access pilot in a certain RO can also be considered as the terminal device initiating random access in this RO.

[0113] As Figure 4 shown, this process includes:

[0114] S401: The terminal sends a pilot to the network device.

[0115] In this step, the terminal may send the pilot to the network device through the PRACH in the 4-step random access, that is, send Msg1, or may send the pilot to the network device through the PRACH in the 2-step random access, that is, the pilot part of MsgA.

[0116] In the embodiments of the present application, the first-type terminal and the second-type terminal correspond to different RO sets. Among them, the first-type terminal corresponds to the first RO set, and the second-type terminal corresponds to the second RO set. The terminal can send a pilot to the network device in the RO corresponding to the type of the terminal. That is to say, the first-type terminal sends a pilot in the RO in the first RO set, and the second-type terminal sends a pilot in the RO in the second RO set, so that the base station can identify the type of the terminal based on the RO set to which the RO where the pilot is located belongs. In order to enable the base station to identify the terminal type through the RO set to which the received / detected pilot belongs, the first RO set and the second RO set have no intersection, that is, the ROs in the first RO set are different from the ROs in the second RO set. For example, the base station indicates the time-frequency resources of the first RO set and the second RO set through different configuration information, that is, the configuration information of the first RO set is different from the configuration information of the second RO set.

[0117] The configuration information of the above-mentioned first RO set and second RO set can be sent by the network device to the terminal. Optionally, the embodiments of the present application provide the following two methods to enable the network device to configure different RO sets for different types of terminals:

[0118] Method 1: If the first type of terminal initiates random access in the first uplink bandwidth part (Bandwidth Part, BWP), and the second type of terminal initiates random access in the second uplink BWP, then the configuration information of the first uplink BWP includes the configuration information of the first RO set, and the configuration information of the second uplink BWP includes the configuration information of the second RO set.

[0119] Exemplarily, the base station configures different initial UL BWPs for the RedCap UE and the ordinary UE respectively. In this case, the base station can configure the RO set used by the ordinary UE (i.e., the above-mentioned second RO set) in the initial UL BWP of the ordinary UE. For example, the RO configuration information of the ordinary UE is included in the configuration information of the initial UL BWP of the ordinary UE. The base station can also configure the RO set used by the RedCap UE (i.e., the above-mentioned first RO set) in the initial UL BWP of the RedCap UE. For example, the RO configuration information of the RedCap UE is included in the configuration information of the initial UL BWP of the RedCap UE.

[0120] Optionally, the configuration information of the initial UL BWP of the ordinary UE and the configuration information of the initial UL BWP of the RedCap UE can be broadcast by the base station in the system information.

[0121] Method 2: If the first type of terminal and the second type of terminal initiate random access in the third uplink BWP, and the third uplink BWP is the uplink BWP shared by the first type of terminal and the second type of terminal, then the configuration information of the third uplink BWP includes the configuration information of the first RO set and the configuration information of the second RO set.

[0122] Exemplarily, the base station configures a shared initial UL BWP for the RedCap UE and the ordinary UE. In this case, the base station can configure both the RO set of the ordinary UE and the RO set of the RedCap UE in the shared initial UL BWP. For example, the RO configuration information of the ordinary UE and the RO configuration information of the RedCap UE are included in the configuration information of the initial UL BWP.

[0123] Optionally, the configuration information of the shared initial UL BWP can be broadcast by the base station in the system information.

[0124] Optionally, in some embodiments of the present application, the type of random access initiated by the terminal may also be distinguished based on a pilot, for example, to distinguish whether the random access initiated by the terminal is 4-step random access or 2-step random access. The network device may respectively configure available pilot sets for 4-step random access and 2-step random access, where the 4-step random access corresponds to a first pilot set, and the 2-step random access corresponds to a second pilot set. The first pilot set and the second pilot set have no intersection, that is, the pilots in the first pilot set are different from the pilots in the second pilot set.

[0125] Correspondingly, before the terminal sends a pilot to the network device according to the RO corresponding to the type of the terminal, the terminal may select a corresponding pilot according to the type of random access to be initiated. If the terminal is to initiate 4-step random access, the pilot is selected from the first pilot set; if the terminal is to initiate 4-step random access, the pilot is selected from the second pilot set.

[0126] The method of distinguishing pilots involves the mapping relationship between the Synchronization Signal Block (SSB) and the RO. In the NR system, N (N is an integer greater than or equal to 1) SSBs can be mapped to 1 RO; if the terminal measures that the signal strength of a certain SSB is greater than a threshold, random access can be initiated from the RO corresponding to the SSB.

[0127] Exemplarily, it may specifically include the following two cases:

[0128] Case 1: If N < 1, one SSB is mapped to 1 / N ROs. In this case, in each RO corresponding to each SSB, it includes:

[0129] The preamble index corresponding to 4-step random access is R, and the starting point of the preamble index is 0, that is, these R pilots belong to the above-mentioned first pilot set;

[0130] The preamble index corresponding to 2-step random access is Q, and the starting point of the preamble index is R, that is, these Q pilots belong to the above-mentioned second pilot set.

[0131] Case 2: If N >= 1, one RO contains the mapping of N SSBs. In this case, in each RO, corresponding to the nth SSB:

[0132] The preamble index corresponding to 4-step random access is R, and the starting point of the preamble index is That is, these R pilots belong to the above-mentioned first pilot set;

[0133] The number of pilot indexes corresponding to two-step random access is Q, and the starting point of the pilot index is That is, the Q pilots belong to the above-mentioned second pilot set.

[0134] Among them, the above parameters N, R, Q, and can be indicated by the network device or predefined. It should be noted that the above parameters of the second type of terminal and the above parameters of the first type of terminal can be the same, for example, the above parameters are shared by the first type of terminal and the second type of terminal; they can also be different, for example, the network device independently configures two sets of different parameters for the first type of terminal and the second type of terminal.

[0135] Furthermore, in this embodiment, different pilot subsets can be further divided from the first pilot set and / or the second pilot set to distinguish between terminals with coverage enhancement and terminals without coverage enhancement, or to distinguish between terminals that support Msg3 retransmission in the random access phase and terminals that do not support Msg3 retransmission, or to distinguish between terminals that require / trigger Msg3 retransmission in the random access phase and terminals that do not require / do not trigger Msg3 retransmission.

[0136] In the embodiment of the present application, the division of the pilot set can include the following two methods:

[0137] Method 1: Only the first pilot set corresponding to four-step random access is divided into subsets, so that the first pilot set includes a first pilot subset and a second pilot subset. Among them, the first pilot subset corresponds to terminals with coverage enhancement, and the second pilot subset corresponds to terminals without coverage enhancement. That is, it is indicated that a part of the pilots in the first pilot set are only used by terminals that support coverage enhancement, and it is indicated that another part of the pilots are only used by terminals that do not support coverage enhancement. Correspondingly, before the terminal sends a pilot, if the random access to be initiated by the terminal is four-step random access and the terminal is a terminal with coverage enhancement, the terminal selects a pilot from the first pilot subset; if the random access to be initiated by the terminal is four-step random access and the terminal is a terminal without coverage enhancement, the terminal selects a pilot from the second pilot subset.

[0138] Considering that two-step random access is usually used by terminals with better coverage conditions, there is generally no need for coverage enhancement in the random access phase. Therefore, it is only necessary to identify terminals that support or do not support enhanced coverage in four-step random access.

[0139] Taking the example that the first pilot set corresponding to the above four-step random access includes R pilots, assuming that the first R1 of the R four-step random access pilots are used by terminals that do not support coverage enhancement, and the last R - R1 of the R four-step random access pilots are used by terminals that support coverage enhancement, then the following two situations are included:

[0140] Case 1: If N < 1, one SSB is mapped to 1 / N ROs. In this case, in each RO corresponding to each SSB:

[0141] The number of preamble indices that do not support coverage enhancement and use 4-step random access is R1, and the starting point of the preamble index is 0, that is, these R1 preambles belong to the above-mentioned second pilot subset;

[0142] The number of preamble indices that support coverage enhancement and use 4-step random access is R - R1, and the starting point of the preamble index is R1, that is, these R - R1 preambles belong to the above-mentioned first pilot subset;

[0143] The number of preamble indices corresponding to 2-step random access is Q, and the starting point of the preamble index is R, that is, the second pilot set corresponding to 2-step RACH is not divided into subsets.

[0144] Case 2: If N >= 1, at this time one RO contains the mapping of N SSBs. In this case, in each RO, corresponding to the nth SSB:

[0145] The number of preamble indices that do not support coverage enhancement and use 4-step random access is R1, and the starting point of the preamble index is That is, these R1 preambles belong to the above-mentioned second pilot subset;

[0146] The number of preamble indices that support coverage enhancement and use 4-step random access is R - R1, and the starting point of the preamble index is That is, these R - R1 preambles belong to the above-mentioned first pilot subset;

[0147] The number of preamble indices corresponding to 2-step random access is Q, and the starting point of the available preamble index is That is, the second pilot set corresponding to 2-step RACH is not divided into subsets.

[0148] Method 2: Subset partitioning is performed on the first pilot set corresponding to 4-step random access and also on the second pilot set corresponding to 2-step random access, such that the first pilot set includes a first pilot subset and a second pilot subset, and the second pilot set includes a third pilot subset and a fourth pilot subset. Among them, the first pilot subset and the third pilot subset correspond to terminals with coverage enhancement, and the second pilot subset and the fourth pilot subset correspond to terminals without coverage enhancement. That is, it is indicated that a part of the pilots in the first pilot set and a part of the pilots in the second pilot set are only used by terminals that support coverage enhancement, and it is indicated that another part of the pilots in the first pilot set and another part of the pilots in the second pilot set are only used by terminals that do not support coverage enhancement. Correspondingly, before the terminal sends a pilot, if the random access to be initiated by the terminal is 4-step random access and the terminal is a terminal with coverage enhancement, the terminal selects a pilot from the first pilot subset; if the random access to be initiated by the terminal is 4-step random access and the terminal is a terminal without coverage enhancement, the terminal selects a pilot from the second pilot subset; if the random access to be initiated by the terminal is 2-step random access and the terminal is a terminal with coverage enhancement, the terminal selects a pilot from the third pilot subset; if the random access to be initiated by the terminal is 2-step random access and the terminal is a terminal without coverage enhancement, the terminal selects a pilot from the fourth pilot subset.

[0149] Considering that 2-step random access may fallback to 4-step random access through a fallback RAR, if the base station identifies that the terminal has the ability of coverage enhancement, it can schedule the terminal to retransmit Msg3 in the case of fallback of 2-step random access. Therefore, it is necessary to identify terminals that support or do not support coverage enhancement in 4-step random access and 2-step random access.

[0150] Taking the first pilot set corresponding to the above 4-step random access including R pilots as an example, the terminals that do not support coverage enhancement use the first R1 of these 4-step random access pilots, and the terminals that support coverage enhancement use the last R - R1 of these R 4-step random access pilots; taking the second pilot set corresponding to the above 2-step random access including Q pilots as an example, the terminals that do not support coverage enhancement use the first Q1 of these Q 2-step random access pilots, and the terminals that support coverage enhancement use the last Q - Q1 of these Q 2-step random access pilots.

[0151] Case 1: If N < 1, at this time one SSB is mapped to 1 / N ROs. In this case, in each RO corresponding to each SSB:

[0152] The pilot indices (preamble index) of the terminals that do not support coverage enhancement and use 4-step random access are R1, and the starting point of the pilot index is 0, that is, these R1 pilots belong to the above-mentioned second pilot subset;

[0153] The number of preamble indices that support coverage enhancement and use 4-step random access is R - R1, and the starting point of the preamble indices is R1. That is, these R - R1 preambles belong to the first preamble subset mentioned above;

[0154] The number of preamble indices that do not support coverage enhancement and use 2-step random access is Q1, and the starting point of the preamble indices is R. That is, these Q1 preambles belong to the fourth preamble subset mentioned above;

[0155] The number of preamble indices that support coverage enhancement and use 2-step random access is Q - Q1, and the starting point of the preamble indices is R + Q1. That is, these Q - Q1 preambles belong to the third preamble subset mentioned above.

[0156] Case 2: If N >= 1, in this case, one RO contains the mapping of N SSBs. In this situation, in each RO, corresponding to the nth SSB (0 <= n <= N - 1):

[0157] The number of preamble indices that do not support coverage enhancement and use 4-step random access is R1, and the starting point of the preamble indices is That is, these R1 preambles belong to the second preamble subset mentioned above;

[0158] The number of preamble indices that support coverage enhancement and use 4-step random access is R - R1, and the starting point of the preamble indices is That is, these R - R1 preambles belong to the first preamble subset mentioned above;

[0159] The number of preamble indices that do not support coverage enhancement and use 2-step random access is Q1, and the starting point of the preamble indices is That is, these Q1 preambles belong to the fourth preamble subset mentioned above;

[0160] The number of preamble indices that support coverage enhancement and use 2-step random access is Q - Q1, and the starting point of the preamble indices is That is, these Q - Q1 preambles belong to the third preamble subset mentioned above.

[0161] Taking the above example where the terminal that does not support coverage enhancement uses the first R1 of R preambles (or the first Q1 of Q preambles), in fact, it can also be that the terminal that supports coverage enhancement uses the first R1 of R preambles (or the first Q1 of Q preambles). The technical effects of the two are the same; in addition, other parameters can also be used to represent the combined parameters. For example, using R2 to replace R - R1, or using Q2 to replace Q - Q1, also has the same technical effect.

[0162] Optionally, in this embodiment, different RO subsets may be further divided from the first RO set and / or the second RO set to distinguish between terminals with coverage enhancement and terminals without coverage enhancement.

[0163] In the embodiments of the present application, the division of the RO set may include the following two methods:

[0164] Method 1: Only the first RO set corresponding to the first type of terminal is divided into subsets, so that the first RO set includes a first RO subset and a second RO subset, where the first RO subset corresponds to a terminal with coverage enhancement, and the second RO subset corresponds to a terminal without coverage enhancement. That is, it is indicated that a part of the ROs in the first RO set are only used by terminals that support coverage enhancement, and it is indicated that another part is only used by terminals that do not support coverage enhancement.

[0165] Correspondingly, before the terminal sends a pilot to the network device in the RO corresponding to the type of the terminal, if the terminal is a first type of terminal and a terminal with coverage enhancement, the terminal selects an RO from the first RO subset; if the terminal is a second type of terminal and a terminal without coverage enhancement, the terminal selects an RO from the second RO subset.

[0166] Method 2: The first RO set corresponding to the first type of terminal is divided into subsets and the second RO set corresponding to the second type of terminal is divided into subsets, so that the first RO set includes a first RO subset and a second RO subset, and the second RO set includes a third RO subset and a fourth RO subset, where the first RO subset and the third RO subset correspond to terminals with coverage enhancement, and the second RO subset and the fourth RO subset correspond to terminals without coverage enhancement. That is, it is indicated that a part of the ROs in the first RO set are only used by terminals that support coverage enhancement, it is indicated that another part is only used by terminals that do not support coverage enhancement, it is indicated that a part of the ROs in the second RO set are only used by terminals that support coverage enhancement, and it is indicated that another part is only used by terminals that do not support coverage enhancement.

[0167] Correspondingly, before the terminal sends a pilot to the network device in the RO corresponding to the type of the terminal, if the terminal is a first type of terminal and a terminal with coverage enhancement, the terminal selects an RO from the first RO subset; if the terminal is a first type of terminal and a terminal without coverage enhancement, the terminal selects an RO from the second RO subset; if the terminal is a second type of terminal and a terminal with coverage enhancement, the terminal selects an RO from the third RO subset; if the terminal is a second type of terminal and a terminal without coverage enhancement, the terminal selects an RO from the fourth RO subset.

[0168] S402: The network device determines the terminal type according to the RO where the pilot is located.

[0169] Among them, if the RO where the pilot is located belongs to the first RO set, the network device determines that the terminal is a first type of terminal; if the RO where the pilot is located belongs to the second RO set, the network device determines that the terminal is a second type of terminal. The first RO set and the second RO set have no intersection, or the configuration information of the first RO set is different from the configuration information of the second RO set.

[0170] Optionally, if the available pilots are divided into a first pilot set corresponding to 4-step random access and a second pilot set corresponding to 2-step random access, the network device can also determine the type of random access initiated by the terminal according to the pilot sent by the terminal. Among them, if the pilot belongs to the first pilot set, the random access initiated by the terminal is 4-step random access; if the pilot belongs to the second pilot set, the random access initiated by the terminal is 2-step random access.

[0171] Optionally, if the available first pilot set is further divided so that the first pilot set includes a first pilot subset and a second pilot subset, the network device determines whether the 4-step random access initiated by the terminal supports coverage enhancement according to the pilot sent by the terminal. Among them, if the pilot belongs to the first pilot subset, the 4-step random access initiated by the terminal corresponds to coverage enhancement; if the pilot belongs to the second pilot subset, the 4-step random access initiated by the terminal corresponds to non-coverage enhancement.

[0172] Optionally, if the available first pilot set is further divided and the available second pilot set is also further divided so that the first pilot set includes a first pilot subset and a second pilot subset, and the second pilot set includes a third pilot subset and a fourth pilot subset, the network device determines whether the 4-step random access and 2-step random access initiated by the terminal support coverage enhancement according to the pilot sent by the terminal. Among them, if the pilot belongs to the first pilot subset, the 4-step random access initiated by the terminal corresponds to coverage enhancement; if the pilot belongs to the second pilot subset, the 4-step random access initiated by the terminal corresponds to non-coverage enhancement; if the pilot belongs to the third pilot subset, the 2-step random access initiated by the terminal corresponds to coverage enhancement; if the pilot belongs to the fourth pilot subset, the 2-step random access initiated by the terminal corresponds to non-coverage enhancement.

[0173] Optionally, if the first RO set is further divided so that the first RO set includes a first RO subset and a second RO subset, if the RO where the pilot sent by the terminal is located belongs to the first RO subset, the network device determines that the terminal is a first type of terminal and is a terminal with coverage enhancement; if the RO where the pilot sent by the terminal is located belongs to the second RO subset, the network device determines that the terminal is a first type of terminal and is a terminal with non-coverage enhancement.

[0174] Optionally, if the first RO set is further divided such that the first RO set includes a first RO subset and a second RO subset, and the second RO set is further divided such that the second RO set includes a third RO subset and a fourth RO subset, if the RO where the pilot sent by the terminal is located belongs to the first RO subset, the network device determines that the terminal is a first type of terminal and a terminal with enhanced coverage; if the RO where the pilot sent by the terminal is located belongs to the second RO subset, the network device determines that the terminal is a first type of terminal and a non-enhanced coverage terminal; if the RO where the pilot sent by the terminal is located belongs to the third RO subset, the network device determines that the terminal is a second type of terminal and a terminal with enhanced coverage; if the RO where the pilot sent by the terminal is located belongs to the fourth RO subset, the network device determines that the terminal is a second type of terminal and a non-enhanced coverage terminal.

[0175] In the embodiments of the present application, the network device can identify whether the terminal is a first type of terminal or a second type of terminal according to the random RO where the pilot sent by the terminal is located, which is beneficial for the network device to perform corresponding scheduling configurations for different types of terminals and improves the utilization rate of network resources.

[0176] Figure 5 Exemplarily shows based on Figure 4 The schematic diagram of the 4-step random access signaling interaction implemented. As shown in the figure, the process includes:

[0177] S501: The terminal sends Msg1 to the network device.

[0178] S502: The network device determines the type of the terminal according to the RO where the pilot is located.

[0179] S503: The network device determines the type of random access initiated by the terminal according to the pilot set to which the pilot belongs.

[0180] S504: The network device determines whether the terminal is a terminal with enhanced coverage according to the pilot subset to which the pilot belongs.

[0181] Among them, the steps of S501, S502, S503, and S504 refer to Figure 4 The relevant description, and S503 and S504 are optional steps.

[0182] S505: The network device sends Msg2, and Msg2 carries the RAR, which is used to notify the terminal whether it can access.

[0183] S506: The terminal sends Msg3 to the network device.

[0184] In this step, the terminal sends Msg3 to the network device according to the received Msg2, where Msg3 carries the RRC request.

[0185] S507: The network device sends Msg4 to the terminal.

[0186] In this step, the network device sends Msg4 to the terminal according to the received Msg3, for notifying the terminal whether the random access is successful.

[0187] Figure 6 Exemplarily shown is based on Figure 4 the signaling interaction schematic diagram of 2-step random access implemented. As shown in the figure, this process includes:

[0188] S601: The terminal sends MsgA to the network device, where MsgA carries a pilot and a physical uplink shared channel.

[0189] S602: The network device identifies the terminal type according to the RO where the pilot is located.

[0190] S603: The network device determines the type of random access initiated by this terminal according to the pilot set to which the pilot belongs.

[0191] S604: The network device determines whether this terminal is a coverage enhanced terminal according to the pilot subset to which the pilot belongs.

[0192] Among them, for the steps of S601, S602, S603, and S604, refer to Figure 4 the relevant descriptions. S603 and S604 are optional steps.

[0193] In this step, the terminal sends MsgA to the network device, where MsgA carries a pilot and a physical uplink shared channel.

[0194] S605: The network device sends MsgB to the terminal.

[0195] In this step, the network device sends MsgB to the terminal according to the received MsgA. If the MsgB contains a successful RAR, the random access process ends. If the MsgB contains a fallback RAR, the random access process falls back to Msg2 in the 4-step random access, and the terminal sends Msg3 according to the scheduling of the fallback RAR and receives Msg4 to notify the terminal whether the random access is successful.

[0196] Figure 7 Exemplarily shown is the block diagram of the access process provided by another embodiment of the present application. Based on this process, the network device can identify the type of the terminal according to the pilot sent by the terminal, that is, determine whether this terminal is a first type terminal or a second type terminal.

[0197] Such as Figure 7 shown, this process includes:

[0198] S701: The terminal sends a pilot corresponding to the type of this terminal to the network device.

[0199] Among them, the RO where the pilot sent by the terminal is located belongs to the RO set shared by the first type of terminal and the second type of terminal.

[0200] In this step, the terminal may send the pilot to the network device through the PRACH in the 4-step random access, that is, send Msg1, or may send the pilot to the network device through the PRACH in the 2-step random access, that is, the MsgA pilot part.

[0201] In the embodiments of the present application, the first type of terminal and the second type of terminal correspond to different pilot sets. Among them, the first type of terminal corresponds to the first pilot set, and the second type of terminal corresponds to the second pilot set. The first pilot set and the second pilot set have no intersection, that is, the pilots in the first pilot set and the pilots in the second pilot set are different, so that the network device can identify the type of the terminal based on the pilot set to which the pilot belongs.

[0202] The configuration information of the RO set shared by the above-mentioned first type of terminal and the second type of terminal can be sent by the network device to the terminal.

[0203] Optionally, the embodiments of the present application provide the following two methods to implement the configuration of the shared RO set for different types of terminals:

[0204] Method 1: If the first type of terminal initiates random access in the first uplink bandwidth part BWP, and the second type of terminal initiates random access in the second uplink BWP, then the configuration information of the first uplink BWP or the configuration information of the second uplink BWP includes the configuration information of the RO set.

[0205] Exemplarily, the base station configures different initial UL BWPs for the RedCap UE and the ordinary UE respectively. In this case, the base station can configure the shared RO set only in one of the initial UL BWP of the ordinary UE and the initial UL BWP of the RedCap UE. For example, the configuration information of the shared RO set is included in the configuration information of the initial UL BWP of the ordinary UE, and both the ordinary UE and the RedCap UE determine the RO set according to the configuration information of the RO set. In a feasible embodiment, the shared RO set of the base station is within the range of the initial UL BWP of the ordinary UE and within the range of the initial UL BWP of the RedCap UE.

[0206] Optionally, the configuration information of the initial UL BWP of the ordinary UE and the configuration information of the initial UL BWP of the RedCap UE can be broadcast by the base station in the system information.

[0207] Mode 2: If the first type of terminal and the second type of terminal initiate random access in the third uplink BWP, where the third uplink BWP is the uplink BWP shared by the first type of terminal and the second type of terminal, the configuration information of the third uplink BWP includes the configuration information of the shared first RO set and the configuration information of the second RO set.

[0208] Exemplarily, the base station configures a shared initial UL BWP for the RedCap UE and the ordinary UE. In this case, the base station can configure a shared RO set in the shared initial UL BWP. For example, the RO configuration information of the ordinary UE and the RO configuration information of the RedCap UE are included in the configuration information of the initial UL BWP.

[0209] Optionally, the configuration information of the shared initial UL BWP can be broadcast by the base station in the system information.

[0210] Optionally, in some embodiments of the present application, the type of random access initiated by the terminal can also be distinguished based on the RO where the pilot is located, such as distinguishing whether the random access initiated by the terminal is 4-step random access or 2-step random access. The network device can configure RO sets for 4-step random access and 2-step random access respectively. Among them, the 4-step random access corresponds to the first RO set, and the 2-step random access corresponds to the second RO set. There is no intersection between the first RO set and the second RO set, that is, the ROs in the first RO set are different from the ROs in the second RO set. For example, the base station indicates the time-frequency resources of the first RO set and the second RO set through different configuration information, that is, the configuration information of the first RO set and the configuration information of the second RO set are different.

[0211] Correspondingly, before the terminal sends a pilot corresponding to the type of the terminal to the network device, it can select an RO from the first RO set or the second RO set according to the type of random access to be initiated by the terminal. Among them, if the random access to be initiated is 4-step random access, the RO is selected from the first RO set; if the random access to be initiated is 2-step random access, the RO is selected from the second RO set.

[0212] Taking the first type of terminal and the second type of terminal as a RedCap UE and a general UE respectively, when the base station configures a shared RO set, the RO set includes a first RO set for 4-step random access and a second RO set for 2-step random access. Therefore, regardless of whether the general UE and the RedCap UE share the initial UL BWP, the base station can determine whether the terminal that sent the pilot initiated 4-step random access H or 2-step RACH based on the ROs in which the pilot was received; correspondingly, the terminal can send a pilot on the ROs in different RO sets to indicate whether the terminal initiated 4-step random access or 2-step random access.

[0213] The method of differentiating pilots involves the mapping relationship between SSBs and ROs. In the NR system, N (N is an integer greater than or equal to 1) SSBs can be mapped to 1 RO; if the terminal measures that the signal strength of a certain SSB is greater than a threshold, it can initiate random access from the RO corresponding to the SSB.

[0214] If the base station does not identify "UEs that support coverage enhancement and UEs that do not support coverage enhancement", or does not identify "terminals that support Msg3 retransmission and terminals that do not support Msg3 retransmission", or does not identify "terminals that require / trigger Msg3 retransmission in the random access phase and terminals that do not require / do not trigger Msg3 retransmission", then:

[0215] Exemplarily, it may specifically include the following two cases:

[0216] Case 1: If N < 1, then one SSB is mapped to 1 / N ROs. In this case, in each RO corresponding to each SSB:

[0217] The pilot indices corresponding to the general UE are P, and the starting point of the pilot indices is 0, that is, these P pilots belong to the second pilot set.

[0218] The pilot indices corresponding to the RedCap UE are S, and the starting point of the pilot indices is P, that is, these S pilots belong to the first pilot set.

[0219] Case 2: If N >= 1, at this time one RO contains the mapping of N SSBs. In this case, in each RO, corresponding to the nth SSB (0 ≤ n ≤ N - 1):

[0220] The pilot indices corresponding to the general UE are P, and the starting point of the pilot indices is That is, these P pilots belong to the second pilot set;

[0221] The pilot indices corresponding to the RedCap UE are S, and the starting point of the pilot indices is That is, the S pilots belong to the first pilot set.

[0222] Among them, the above parameters N, P, S, and can be indicated or predetermined by the network device. N, P, S, and are positive integers greater than 0. It should be noted that the above parameters for 4-step random access and the above parameters for 2-step random access can be the same, for example, the parameters are shared; they can also be different, for example, the base station independently configures two different sets of parameters for 4-step random access and 2-step random access.

[0223] The above method takes the case where a common UE uses the first P pilots as an example. In fact, it can also be that a RedCap UE uses the first P pilots, and the technical effects of the two are the same. In short, through the above method, it is possible to identify whether the terminal initiating random access is a common UE or a RedCap UE according to the pilot.

[0224] Furthermore, in this embodiment, different pilot subsets can be further divided from the first pilot set and / or the second pilot set, so that the first pilot set includes a first pilot subset and a second pilot subset, and the second pilot set includes a third pilot subset and a fourth pilot subset, which are used to distinguish between terminals with enhanced coverage and terminals without enhanced coverage, or to distinguish between terminals that support Msg3 retransmission in the random access phase and terminals that do not support Msg3 retransmission, or to distinguish between terminals that require / trigger Msg3 retransmission in the random access phase and terminals that do not require / do not trigger Msg3 retransmission. Among them, the first pilot subset and the third pilot subset correspond to terminals with enhanced coverage, and the second pilot subset and the fourth pilot subset correspond to terminals without enhanced coverage.

[0225] In the embodiments of this application, the division of the pilot set can include the following two methods:

[0226] Method 1: When the random access initiated by the terminal is 4-step random access: If the terminal is a first-type terminal and a terminal with enhanced coverage, select a pilot from the first pilot subset; if the terminal is a first-type terminal and a terminal without enhanced coverage, select a pilot from the second pilot subset; if the terminal is a second-type terminal and a terminal with enhanced coverage, select a pilot from the third pilot subset; if the terminal is a second-type terminal and a terminal without enhanced coverage, select a pilot from the fourth pilot subset.

[0227] If the random access initiated by the terminal is 2-step random access, the following situations are included: If the terminal is a first-type terminal, select a pilot from the first pilot set; if the terminal is a second-type terminal, select a pilot from the second pilot set.

[0228] Considering that two-step random access is usually used by terminals with relatively good coverage conditions, and there is generally no need for coverage enhancement during the random access phase. Therefore, it is only necessary to identify terminals that support or do not support enhanced coverage during four-step random access.

[0229] Method 2: When the random access initiated by the terminal includes four-step random access: If the terminal is a first-type terminal and is a terminal with enhanced coverage, select a pilot from the first pilot subset; if the terminal is a first-type terminal and is a terminal without enhanced coverage, select a pilot from the second pilot subset; if the terminal is a second-type terminal and is a terminal with enhanced coverage, select a pilot from the third pilot subset; if the terminal is a second-type terminal and is a terminal without enhanced coverage, select a pilot from the fourth pilot subset.

[0230] If the random access initiated by the terminal is two-step random access, the following situations are included: If the terminal is a first-type terminal and is a terminal with enhanced coverage, select a pilot from the first pilot subset; if the terminal is a first-type terminal and is a terminal without enhanced coverage, select a pilot from the second pilot subset; if the terminal is a second-type terminal and is a terminal with enhanced coverage, select a pilot from the third pilot subset; if the terminal is a second-type terminal and is a terminal without enhanced coverage, select a pilot from the fourth pilot subset.

[0231] Taking the example that the second pilot set corresponding to a common UE includes P pilots, the terminal that does not support enhanced coverage uses the first P1 of the P common UE pilots, and the common UE that supports enhanced coverage uses the last P - P1 of the P common UE pilots; taking the above-mentioned first pilot set corresponding to the RedCap UE as an example, the RedCap UE that does not support enhanced coverage uses the first S1 of the S RedCap UE pilots, and the RedCap UE that supports enhanced coverage uses the last S - S1 of the S RedCap UE pilots.

[0232] Case 1: If N < 1, at this time, one SSB is mapped to 1 / N ROs. In this case, in each RO corresponding to each SSB:

[0233] The pilot index (preamble index) of the common UE that does not support enhanced coverage is P1, and the starting point of the pilot index is 0, that is, these P1 pilots belong to the above-mentioned fourth pilot subset;

[0234] The pilot index (preamble index) of the common UE that supports enhanced coverage is P - P1, and the starting point of the pilot index is P1, that is, these P - P1 pilots belong to the above-mentioned second pilot subset;

[0235] The number of preamble indices for RedCap UEs that do not support coverage enhancement is S1, and the starting point of the preamble indices is P. That is, these P preambles belong to the above-mentioned third preamble subset;

[0236] The number of preamble indices for RedCap UEs that support coverage enhancement is S - S1, and the starting point of the preamble indices is P + S1. That is, these S - S1 preambles belong to the above-mentioned first preamble subset.

[0237] Case 2: If N >= 1, in this case, one RO contains the mapping of N SSBs. In this situation, in each RO, corresponding to the nth SSB (0 ≤ n ≤ N - 1):

[0238] The number of preamble indices for ordinary UEs that do not support coverage enhancement is P1, and the starting point of the preamble indices is That is, these P1 preambles belong to the above-mentioned fourth preamble subset;

[0239] The number of preamble indices for ordinary UEs that support coverage enhancement is P - P1, and the starting point of the preamble indices is That is, these P - P1 preambles belong to the above-mentioned second preamble subset;

[0240] The number of preamble indices for RedCap UEs that do not support coverage enhancement is S1, and the starting point of the preamble indices is That is, these P preambles belong to the above-mentioned third preamble subset;

[0241] The number of preamble indices for RedCap UEs that support coverage enhancement is S - S1, and the starting point of the preamble indices is That is, these S - S1 preambles belong to the above-mentioned first preamble subset.

[0242] Among them, N, P, P1, S, S1, and can be indicated by the network device or predefined. It should be noted that the above parameters for 4-step random access and the above parameters for 2-step random access can be the same, for example, the above parameters are shared; or they can be different, for example, the network device configures two sets of different parameters independently for 4-step random access and 2-step random access.

[0243] Taking the example that a terminal that does not support coverage enhancement uses the first P1 (or the first S1 among S pilots) of P pilots, in fact, it can also be a terminal that supports coverage enhancement using the first P1 (or the first S1 among S pilots) of P pilots, and the technical effects of the two are the same; in addition, other parameters can also be used to represent the combined parameters. For example, using P2 to replace P - P1, or using S2 to replace S - S1, also has the same technical effect.

[0244] Optionally, in this embodiment, different RO subsets can also be further divided from the first RO set and / or the second RO set to distinguish between terminals with coverage enhancement and terminals without coverage enhancement.

[0245] In the embodiment of the present application, the division of the RO set can include the following two methods:

[0246] Method 1: Only divide the first RO set corresponding to the first type of terminal into subsets, so that the first RO set includes a first RO subset and a second RO subset, where the first RO subset corresponds to a terminal with coverage enhancement, and the second RO subset corresponds to a terminal without coverage enhancement. That is, it indicates that a part of the ROs in the first RO set are only used by terminals that support coverage enhancement, and it indicates that another part is only used by terminals that do not support coverage enhancement.

[0247] Correspondingly, before the terminal sends a pilot to the network device in the corresponding RO, if the terminal selects an RO from the first RO subset, the terminal is a first type of terminal and a terminal with coverage enhancement; if the terminal selects an RO from the second RO subset, the terminal is a second type of terminal and a terminal without coverage enhancement.

[0248] Method 2: Divide the first RO set corresponding to the first type of terminal into subsets and divide the second RO set corresponding to the second type of terminal into subsets, so that the first RO set includes a first RO subset and a second RO subset, and the second RO set includes a third RO subset and a fourth RO subset, where the first RO subset and the third RO subset correspond to terminals with coverage enhancement, and the second RO subset and the fourth RO subset correspond to terminals without coverage enhancement. That is, it indicates that a part of the ROs in the first RO set are only used by terminals that support coverage enhancement, it indicates that another part is only used by terminals that do not support coverage enhancement, it indicates that a part of the ROs in the second RO set are only used by terminals that support coverage enhancement, and it indicates that another part is only used by terminals that do not support coverage enhancement.

[0249] Correspondingly, before the terminal sends a pilot to the network device in the corresponding RO, if the terminal is a first-type terminal and a coverage-enhanced terminal, the terminal selects an RO from the first RO subset; if the terminal is a first-type terminal and a non-coverage-enhanced terminal, the terminal selects an RO from the second RO subset; if the terminal is a second-type terminal and a coverage-enhanced terminal, the terminal selects an RO from the third RO subset; if the terminal is a second-type terminal and a non-coverage-enhanced terminal, the terminal selects an RO from the fourth RO subset.

[0250] S702: The network device determines the type of the terminal according to the pilot set to which the pilot belongs.

[0251] Among them, if the pilot belongs to the first pilot set, the network device determines that the terminal is a first-type terminal; if the pilot belongs to the second pilot set, the network device determines that the terminal is a second-type terminal.

[0252] Optionally, if the RO set where the pilot is located is further divided, the network device can also determine the type of random access initiated by the terminal according to the RO where the pilot sent by the terminal is located. Among them, if the RO where the pilot is located belongs to the first RO set, the random access initiated by the terminal is 4-step random access; if the RO where the pilot is located belongs to the second RO set, the random access initiated by the terminal is 2-step random access.

[0253] Optionally, the available first pilot set is further divided, and the available second pilot set is also further divided, so that the first pilot set includes a first RO subset and a second RO subset, and the second pilot set includes a third RO subset and a fourth RO subset. Then the network device determines whether the first-type terminal and the second-type terminal support coverage enhancement according to the pilot sent by the terminal. Among them, if the pilot belongs to the first RO subset, the network device determines that the terminal is a first-type terminal and coverage-enhanced; if the pilot sent by the terminal belongs to the second RO subset, the network device determines that the terminal is a second-type terminal and non-coverage-enhanced; if the pilot sent by the terminal belongs to the third RO subset, the network device determines that the terminal is a second-type terminal and coverage-enhanced; if the pilot sent by the terminal belongs to the fourth RO subset, the network device determines that the terminal is a second-type terminal and non-coverage-enhanced.

[0254] Optionally, if the first RO set is further divided so that the first RO set includes a first RO subset and a second RO subset, if the RO where the pilot sent by the terminal is located belongs to the first RO subset, the network device determines that the terminal is a coverage-enhanced terminal and 4-step random access; if the RO where the pilot sent by the terminal is located belongs to the second RO subset, the network device determines that the terminal is a non-coverage-enhanced terminal and 2-step random access.

[0255] Optionally, if the first RO set is further divided such that the first RO set includes a first RO subset and a second RO subset, and the second RO set is further divided such that the second RO set includes a third RO subset and a fourth RO subset, if the RO where the pilot sent by the terminal is located belongs to the first RO subset, the network device determines that the terminal is a coverage-enhanced terminal and performs 4-step random access; if the RO where the pilot sent by the terminal is located belongs to the second RO subset, the network device determines that the terminal is a non-coverage-enhanced terminal and performs 4-step random access; if the RO where the pilot sent by the terminal is located belongs to the third RO subset, the network device determines that the terminal is coverage-enhanced and performs 2-step random access; if the RO where the pilot sent by the terminal is located belongs to the fourth RO subset, the network device determines that the terminal is non-coverage-enhanced and performs 2-step random access.

[0256] In another embodiment of the present application, the network device can identify whether the terminal is a first type of terminal or a second type of terminal according to the set of pilots sent by the terminal, which is beneficial for the network device to perform corresponding scheduling configurations for different types of terminals and improves the utilization rate of network resources.

[0257] Figure 8 Exemplarily shows the 4-step random access signaling interaction diagram based on Figure 7 implemented.

[0258] S801: The network device sends Msg1 to the terminal.

[0259] S802: The network device determines the type of the terminal according to the set of pilots to which the pilot belongs.

[0260] S803: The network device determines the type of random access initiated by the terminal according to the RO where the pilot is located.

[0261] S804: The network device determines whether the terminal is a coverage-enhanced terminal according to the pilot subset to which the pilot belongs.

[0262] Among them, for the steps of S801, S802, S803, and S804, refer to Figure Six the relevant description. S803 and S804 are optional steps.

[0263] S805: The network device sends Msg2, where Msg2 carries the RAR and is used to notify the terminal whether it can access.

[0264] S806: The terminal sends Msg3 to the network device.

[0265] In this step, the terminal sends Msg3 to the network device according to the received Msg2, where Msg3 carries the RRC request.

[0266] S807: The network device sends Msg4 to the terminal.

[0267] In this step, the network device sends Msg4 to the terminal according to the received Msg3, which is used to notify the terminal whether the random access is successful.

[0268] Figure 9 Exemplarily shows based on Figure 7 The schematic diagram of the two-step random access signaling interaction implemented.

[0269] S901: The terminal sends MsgA to the network device, where MsgA carries a pilot and a physical uplink shared channel.

[0270] S902: The network device identifies the terminal type according to the pilot set to which the pilot belongs.

[0271] S903: The network device distinguishes the random access type according to the RO where the pilot is located.

[0272] S904: The network device distinguishes whether the coverage is enhanced according to the pilot subset to which the pilot belongs.

[0273] Among them, for the steps of S901, S902, S903, and S904, refer to Figure Six the relevant description. S903 and S904 are optional steps.

[0274] S905: The network device sends MsgB to the terminal.

[0275] In this step, the network device sends MsgB to the terminal according to the received MsgA. If the MsgB contains a successful RAR, the random access process ends. If the MsgB contains a fallback RAR, the random access process falls back to Msg2 in the four-step random access, and the terminal sends Msg3 according to the scheduling of the fallback RAR and receives Msg4 to notify the terminal whether the random access is successful.

[0276] Figure 10 Exemplarily shows the structure of the network device in the embodiment of the present application. Based on this structure, the network device can identify the type of the terminal according to the RO where the pilot sent by the terminal is located, that is, determine whether the terminal is a first-type terminal or a second-type terminal.

[0277] As shown in the figure, the network device includes a receiving module 1001 and a processing module 1002.

[0278] The receiving module 1001 is used to receive the pilot sent by the terminal.

[0279] A processing module 1002 is configured to determine the type of the terminal according to the random access channel occasion RO where the pilot is located. Specifically, if the RO belongs to the first RO set, the terminal is a first type of terminal; if the RO belongs to the second RO set, the terminal is a second type of terminal. The first RO set and the second RO set have no intersection, or the configuration information of the first RO set is different from the configuration information of the second RO set.

[0280] It should be noted here that the above network device provided in the embodiment of the present application can implement all the method steps implemented in the above method embodiment and can achieve the same technical effect. Therefore, the same parts and beneficial effects in this embodiment as those in the method embodiment will not be specifically described herein.

[0281] Based on the same technical concept, the embodiment of the present application also provides a terminal that can implement the functions on the terminal side in the foregoing embodiment.

[0282] Figure 11 The structure of the terminal in the embodiment of the present application is exemplarily shown. Based on this structure, the network device can identify the type of the terminal according to the pilot sent by the terminal, that is, determine whether the terminal is a first type of terminal or a second type of terminal.

[0283] As shown in the figure, the network device includes a receiving module 1101 and a processing module 1102.

[0284] A sending module 1101 is configured to send a pilot to the network device in the RO corresponding to this module.

[0285] The processing module 1102 is configured to, if the terminal is a first type of terminal, send the pilot in the RO in the first RO set; if the terminal is a second type of terminal, send the pilot in the RO in the second RO set. The first RO set and the second RO set have no intersection, or the configuration information of the first RO set is different from the configuration information of the second RO set.

[0286] It should be noted here that the above terminal provided in the embodiment of the present invention can implement all the method steps implemented in the above method embodiment and can achieve the same technical effect. Therefore, the same parts and beneficial effects in this embodiment as those in the method embodiment will not be specifically described herein.

[0287] Figure 12 The structural schematic diagram of the communication device provided in the embodiment of the present application is exemplarily shown.

[0288] As shown in the figure, the device may include a processor 1201, a memory 1202, and a bus interface 1203.

[0289] The processor 1201 is responsible for managing the bus architecture and general processing, and the memory 1202 can store the data used by the processor 1203 when executing operations.

[0290] The bus architecture can include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by the processor 1201 and the memory represented by the memory 1202. The bus architecture can also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and thus will not be further described herein. The bus interface provides an interface. The processor 1201 is responsible for managing the bus architecture and general processing, and the memory 1202 can store the data used by the processor 1201 when executing operations.

[0291] The processes disclosed in the embodiments of the present disclosure can be applied to or implemented by the processor 1201. During the implementation process, each step of the signal processing process can be completed by the integrated logic circuit in the hardware of the processor 1201 or instructions in the form of software. The processor 1201 can be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present disclosure. The general-purpose processor can be a microprocessor or any conventional processor, etc. The steps of the method disclosed in combination with the embodiments of the present disclosure can be directly embodied as being executed by the hardware processor, or executed by a combination of the hardware and software modules in the processor. The software module can be located in a mature storage medium in the art such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers, etc. This storage medium is located in the memory 1202, and the processor 1201 reads the information in the memory 1202 and combines its hardware to complete the steps of the information processing process.

[0292] Specifically, the processor 1201 is used to read the computer instructions in the memory 1202 and execute the vehicle networking device management method in the embodiments of the present disclosure.

[0293] It should be noted here that the above communication device provided in the embodiments of the present disclosure can implement all the method steps implemented in the above method embodiments and can achieve the same technical effects. The same parts and beneficial effects as those in the method embodiments will not be specifically described in this embodiment.

[0294] The embodiments of the present disclosure also provide a computer-readable storage medium storing computer-executable instructions for causing a computer to execute the vehicle networking device management method in the above embodiments.

[0295] An embodiment of the present disclosure also provides a computer program product. When the computer program product is called by a computer, the computer is caused to execute the vehicle networking device management method in the above embodiment.

[0296] Those skilled in the art should understand that the embodiments of the present disclosure can be provided as a method, a system, or a computer program product. Therefore, the present disclosure can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present disclosure can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0297] The present disclosure is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the present disclosure. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of flows and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices generate means for implementing the functions specified in Figure One one or more of the processes or multiple processes and / or blocks Figure One one or more of the blocks or multiple blocks.

[0298] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device that implements the functions specified in Figure One one or more of the processes or multiple processes and / or blocks Figure One one or more of the blocks or multiple blocks.

[0299] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in Figure One one or more of the processes or multiple processes and / or blocks Figure One one or more of the blocks or multiple blocks.

[0300] Obviously, those skilled in the art can make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalent technologies, the present disclosure is also intended to include these modifications and variations.

Claims

1. An access method, characterized in that, Including: A network device receives a pilot sent by a terminal; The network device determines the type of the terminal according to the random access channel occasion RO where the pilot is located; wherein, if the RO belongs to a first RO set, the terminal is a first type of terminal, and if the RO belongs to a second RO set, the terminal is a second type of terminal, the first RO set and the second RO set have no intersection, or the configuration information of the first RO set is different from the configuration information of the second RO set; the first type of terminal initiates random access in a first uplink bandwidth part BWP, and the second type of terminal initiates random access in a second uplink BWP, the configuration information of the first uplink BWP includes the configuration information of the first RO set, and the configuration information of the second uplink BWP includes the configuration information of the second RO set; or, the first type of terminal and the second type of terminal initiate random access in a third uplink BWP, the third uplink BWP is an uplink BWP shared by the first type of terminal and the second type of terminal, and the configuration information of the third uplink BWP includes the configuration information of the first RO set and the configuration information of the second RO set; Wherein, the first RO set includes a first RO subset and a second RO subset, the first RO subset corresponds to a terminal with coverage enhancement, and the second RO subset corresponds to a terminal without coverage enhancement; the method further includes: If the RO where the pilot sent by the terminal is located belongs to the first RO subset, the network device determines that the terminal is the first type of terminal and is a terminal with coverage enhancement, and if the RO where the pilot sent by the terminal is located belongs to the second RO subset, the network device determines that the terminal is the first type of terminal and is a non-CE terminal; Or, the first RO set includes a first RO subset and a second RO subset, the second RO set includes a third RO subset and a fourth RO subset, the first RO subset and the third RO subset correspond to terminals with coverage enhancement, and the second RO subset and the fourth RO subset correspond to terminals without coverage enhancement; the method further includes: If the RO where the pilot sent by the terminal is located belongs to the first RO subset, the network device determines that the terminal is the first type of terminal and is a terminal with coverage enhancement; if the RO where the pilot sent by the terminal is located belongs to the second RO subset, the network device determines that the terminal is the first type of terminal and is a terminal without coverage enhancement; if the RO where the pilot sent by the terminal is located belongs to the third RO subset, the network device determines that the terminal is the second type of terminal and is a terminal with coverage enhancement; if the RO where the pilot sent by the terminal is located belongs to the fourth RO subset, the network device determines that the terminal is the second type of terminal and is a terminal without coverage enhancement.

2. The method according to claim 1, characterized in that, The method further includes: The network device determines the type of random access initiated by the terminal according to the pilot sent by the terminal; wherein, if the pilot belongs to the first pilot set, the random access initiated by the terminal is 4-step random access, and if the pilot belongs to the second pilot set, the random access initiated by the terminal is 2-step random access, and the first pilot set and the second pilot set have no intersection.

3. The method according to claim 2, characterized in that, The first pilot set includes a first pilot subset and a second pilot subset, the first pilot subset corresponds to a terminal with coverage enhancement, and the second pilot subset corresponds to a terminal without coverage enhancement; The method further includes: If the pilot sent by the terminal belongs to the first pilot subset, the network device determines that the terminal is a terminal with coverage enhancement and the initiated random access is 4-step random access. If the pilot sent by the terminal belongs to the second pilot subset, the terminal is a terminal without coverage enhancement and the initiated random access is 4-step random access; Alternatively, the first pilot set includes a first pilot subset and a second pilot subset, the second pilot set includes a third pilot subset and a fourth pilot subset, the first pilot subset and the third pilot subset correspond to terminals with coverage enhancement, and the second pilot subset and the fourth pilot subset correspond to terminals without coverage enhancement; the method further includes: If the pilot sent by the terminal belongs to the first pilot subset, the network device determines that the terminal is a terminal with coverage enhancement and the initiated random access is 4-step random access; if the pilot sent by the terminal belongs to the second pilot subset, the network device determines that the terminal is a terminal without coverage enhancement and the initiated random access is 4-step random access; if the pilot sent by the terminal belongs to the third pilot subset, the network device determines that the terminal is a terminal with coverage enhancement and the initiated random access is 2-step random access; if the pilot sent by the terminal belongs to the fourth pilot subset, the network device determines that the terminal is a terminal without coverage enhancement and the initiated random access is 2-step random access.

4. The method according to claim 1, characterized in that The maximum bandwidth supported by the first type of terminal is different from the maximum bandwidth supported by the second type of terminal, and / or the minimum number of receiving antennas of the first type of terminal is different from the minimum number of receiving antennas of the second type of terminal.

5. An access method, characterized in that, Including: The terminal sends a pilot to the network device in a random access channel opportunity RO corresponding to the type of the terminal; Wherein, if the terminal is a first type of terminal, the pilot is sent in the ROs in the first RO set; if the terminal is a second type of terminal, the pilot is sent in the ROs in the second RO set. The first RO set and the second RO set have no intersection, or the configuration information of the first RO set is different from the configuration information of the second RO set. The first type of terminal initiates random access in the first uplink bandwidth part (BWP), and the second type of terminal initiates random access in the second uplink BWP. The configuration information of the first uplink BWP includes the configuration information of the first RO set, and the configuration information of the second uplink BWP includes the configuration information of the second RO set. Alternatively, the first type of terminal and the second type of terminal initiate random access in the third uplink BWP, and the third uplink BWP is the uplink BWP shared by the first type of terminal and the second type of terminal. The configuration information of the third uplink BWP includes the configuration information of the first RO set and the configuration information of the second RO set. Wherein, the first RO set includes a first RO subset and a second RO subset. The first RO subset corresponds to terminals with coverage enhancement, and the second RO subset corresponds to terminals without coverage enhancement. The terminal sending a pilot to the network device in the RO corresponding to the type of the terminal includes: If the terminal is the first type of terminal and the terminal has coverage enhancement, the terminal selects an RO from the first RO subset; if the terminal is the second type of terminal and the terminal has no coverage enhancement, the terminal selects an RO from the second RO subset. Alternatively, the first RO set includes a first RO subset and a second RO subset, and the second RO set includes a third RO subset and a fourth RO subset. The first RO subset and the third RO subset correspond to terminals with coverage enhancement, and the second RO subset and the fourth RO subset correspond to terminals without coverage enhancement. The terminal sending a pilot to the network device in the RO corresponding to the type of the terminal includes: If the terminal is the first type of terminal and the terminal has coverage enhancement, the terminal selects an RO from the first RO subset; if the terminal is the first type of terminal and the terminal has no coverage enhancement, the terminal selects an RO from the second RO subset; if the terminal is the second type of terminal and the terminal has coverage enhancement, the terminal selects an RO from the third RO subset; if the terminal is the second type of terminal and the terminal has no coverage enhancement, the terminal selects an RO from the fourth RO subset.

6. The method according to claim 5, characterized in that, Before the terminal sends a pilot to the network device according to the RO corresponding to the type of the terminal, the method further includes: The terminal selects a corresponding pilot according to the type of random access to be initiated. Among them, if the random access to be initiated is a 4-step random access, the pilot is selected from the first pilot set; if the random access to be initiated is a 2-step random access, the pilot is selected from the second pilot set, and the first pilot set and the second pilot set have no intersection.

7. The method according to claim 6, wherein The first pilot set includes a first pilot subset and a second pilot subset. The first pilot subset corresponds to terminals with coverage enhancement, and the second pilot subset corresponds to terminals without coverage enhancement. The terminal selects a corresponding pilot, including: If the random access to be initiated by the terminal is a 4-step random access and the terminal is a terminal with coverage enhancement, the terminal selects a pilot from the first pilot subset; if the random access to be initiated by the terminal is a 4-step random access and the terminal is a terminal without coverage enhancement, the terminal selects a pilot from the second pilot subset. Alternatively, the first pilot set includes a first pilot subset and a second pilot subset, the second pilot set includes a third pilot subset and a fourth pilot subset, the first pilot subset and the third pilot subset correspond to terminals with coverage enhancement, and the second pilot subset and the fourth pilot subset correspond to terminals without coverage enhancement. The terminal selects a corresponding pilot, including: If the random access to be initiated by the terminal is a 4-step random access and the terminal is a terminal with coverage enhancement, the terminal selects a pilot from the first pilot subset; if the random access to be initiated by the terminal is a 4-step random access and the terminal is a terminal without coverage enhancement, the terminal selects a pilot from the second pilot subset; if the random access to be initiated by the terminal is a 2-step random access and the terminal is a terminal with coverage enhancement, the terminal selects a pilot from the third pilot subset; if the random access to be initiated by the terminal is a 2-step random access and the terminal is a terminal without coverage enhancement, the terminal selects a pilot from the fourth pilot subset.

8. The method according to claim 5, characterized in that, The maximum bandwidth supported by the first type of terminal is different from the maximum bandwidth supported by the second type of terminal, and the minimum number of receiving antennas of the first type of terminal is different from the minimum number of receiving antennas of the second type of terminal.

9. An access method, characterized in that, Including: The network device receives the pilot sent by the terminal, and the random access channel opportunity RO where the pilot is located belongs to the RO set shared by the first type of terminal and the second type of terminal. The network device determines the type of the terminal according to the pilot set to which the pilot belongs. Among them, if the pilot belongs to the first pilot set, the terminal is the first type of terminal; if the pilot belongs to the second pilot set, the terminal is the second type of terminal, and the first pilot set and the second pilot set have no intersection. Among them, the first pilot set includes a first pilot subset and a second pilot subset, the second pilot set includes a third pilot subset and a fourth pilot subset, the first pilot subset and the third pilot subset correspondingly cover enhanced terminals, and the second pilot subset and the fourth pilot subset correspondingly cover non-enhanced terminals; the method further includes: The network device determines the type of the terminal and whether it is a coverage-enhanced terminal according to the pilot subset to which the pilot belongs. Among them, if the pilot belongs to the first pilot subset, the terminal is a first-type terminal and a coverage-enhanced terminal; if the pilot belongs to the second pilot subset, the terminal is a first-type terminal and a non-coverage-enhanced terminal; if the pilot belongs to the third pilot subset, the terminal is a second-type terminal and a coverage-enhanced terminal; if the pilot belongs to the fourth pilot subset, the terminal is a second-type terminal and a non-coverage-enhanced terminal.

10. The method according to claim 9, wherein The first-type terminal initiates random access in a first uplink bandwidth part (BWP), and the second-type terminal initiates random access in a second uplink BWP. The configuration information of the first uplink BWP or the configuration information of the second uplink BWP includes the configuration information of the RO set; alternatively, the first-type terminal and the second-type terminal initiate random access in a third uplink BWP. The third uplink BWP is an uplink BWP shared by the first-type terminal and the second-type terminal, and the configuration information of the third uplink BWP includes the configuration information of the RO set; the RO set includes a first RO set and a second RO set, and the first RO set and the second RO set have no intersection, or the configuration information of the first RO set is different from the configuration information of the second RO set; the method further includes: The network device determines the type of random access initiated by the terminal according to the RO where the pilot is located; among them, if the RO where the pilot is located belongs to the first RO set, the random access initiated by the terminal is 4-step random access, and if the RO where the pilot is located belongs to the second RO set, the random access initiated by the terminal is 2-step random access.

11. The method according to claim 10, wherein The first RO set includes a first RO subset and a second RO subset. The first RO subset corresponds to coverage-enhanced terminals, and the second RO subset corresponds to non-coverage-enhanced terminals; the method further includes: If the RO where the pilot sent by the terminal is located belongs to the first RO subset, the network device determines that the terminal is a coverage-enhanced terminal and the initiated random access is 4-step random access; if the RO where the pilot sent by the terminal is located belongs to the second RO subset, the network device determines that the terminal is a non-coverage-enhanced terminal and the initiated random access is 2-step random access; Alternatively, the first RO set includes a first RO subset and a second RO subset, the second RO set includes a third RO subset and a fourth RO subset, the first RO subset and the third RO subset respectively correspond to terminals with coverage enhancement, and the second RO subset and the fourth RO subset respectively correspond to terminals without coverage enhancement; the method further includes: If the RO where the pilot sent by the terminal is located belongs to the first RO subset, the network device determines that the terminal is a terminal with coverage enhancement and the random access initiated is 4-step random access; if the RO where the pilot sent by the terminal is located belongs to the second RO subset, the network device determines that the terminal is a terminal without coverage enhancement and the random access initiated is 4-step random access; if the RO where the pilot sent by the terminal is located belongs to the third RO subset, the network device determines that the terminal is a terminal with coverage enhancement and the random access initiated is 2-step random access; if the RO where the pilot sent by the terminal is located belongs to the fourth RO subset, the network device determines that the terminal is a terminal without coverage enhancement and the random access initiated is 2-step random access.

12. The method according to claim 9, characterized in that, The maximum bandwidth supported by the first type of terminal is different from the maximum bandwidth supported by the second type of terminal, and / or the minimum number of receiving antennas of the first type of terminal is different from the minimum number of receiving antennas of the second type of terminal.

13. An access method, characterized in that, Including: The terminal sends a pilot corresponding to the type of the terminal to the network device, and the random access channel occasion (RO) where the pilot is located belongs to the RO set shared by the first type of terminal and the second type of terminal; Wherein, if the terminal is the first type of terminal, the pilot belongs to the first pilot set, and if the terminal is the second type of terminal, the pilot belongs to the second pilot set, and the first pilot set and the second pilot set have no intersection; Wherein, the first pilot set includes a first pilot subset and a second pilot subset, the second pilot set includes a third pilot subset and a fourth pilot subset, the first pilot subset and the third pilot subset respectively correspond to terminals with coverage enhancement, and the second pilot subset and the fourth pilot subset respectively correspond to terminals without coverage enhancement; Before the terminal sends a pilot corresponding to the type of the terminal to the network device, the method further includes: If the terminal is the first type of terminal and the terminal has coverage enhancement, select a pilot from the first pilot subset; if the terminal is the first type of terminal and the terminal has no coverage enhancement, select a pilot from the second pilot subset; if the terminal is the second type of terminal and the terminal has coverage enhancement, select a pilot from the third pilot subset; if the terminal is the second type of terminal and the terminal has no coverage enhancement, select a pilot from the fourth pilot subset.

14. The method according to claim 13, wherein The first type of terminal initiates random access in the first uplink bandwidth part (BWP), and the second type of terminal initiates random access in the second uplink BWP. The configuration information of the first uplink BWP or the configuration information of the second uplink BWP includes the configuration information of the RO set; or, the first type of terminal and the second type of terminal initiate random access in the third uplink BWP, where the third uplink BWP is an uplink BWP shared by the first type of terminal and the second type of terminal, and the configuration information of the third uplink BWP includes the configuration information of the RO set; the RO set includes a first RO set and a second RO set, and the first RO set and the second RO set have no intersection, or the configuration information of the first RO set is different from the configuration information of the second RO set; Before the terminal sends a pilot corresponding to the type of the terminal to the network device, the method further includes: The terminal selects an RO from the first RO set or the second RO set according to the type of random access that the terminal is about to initiate; wherein, if the random access to be initiated is 4-step random access, the RO is selected from the first RO set; if the random access to be initiated is 2-step random access, the RO is selected from the second RO set.

15. The method according to claim 14, wherein The first RO set includes a first RO subset and a second RO subset. The first RO subset corresponds to a terminal with coverage enhancement, and the second RO subset corresponds to a terminal without coverage enhancement; The terminal sending a pilot corresponding to the type of the terminal to the network device includes: If the random access to be initiated by the terminal is 4-step random access and the terminal is a terminal with coverage enhancement, the terminal selects an RO from the first RO subset; if the random access to be initiated by the terminal is 4-step random access and the terminal is a terminal without coverage enhancement, the terminal selects an RO from the second RO subset; Or, the first RO set includes a first RO subset and a second RO subset, and the second RO set includes a third RO subset and a fourth RO subset. The first RO subset and the third RO subset correspond to terminals with coverage enhancement, and the second RO subset and the RO subset correspond to terminals without coverage enhancement; the terminal sending a pilot corresponding to the type of the terminal to the network device includes: If the random access to be initiated by the terminal is 4-step random access and the terminal is a terminal with coverage enhancement, the terminal selects an RO from the first RO subset; if the random access to be initiated by the terminal is 4-step random access and the terminal is a terminal without coverage enhancement, the terminal selects an RO from the second RO subset; if the random access to be initiated by the terminal is 2-step random access and the terminal is a terminal with coverage enhancement, the terminal selects an RO from the third RO subset; if the random access to be initiated by the terminal is 2-step random access and the terminal is a terminal without coverage enhancement, the terminal selects an RO from the fourth RO subset.

16. The method according to claim 13, wherein The maximum bandwidth supported by the first type of terminal is different from that supported by the second type of terminal, and / or the minimum number of receiving antennas of the first type of terminal is different from that of the second type of terminal.

17. A communication device, characterized in that, Comprising: A processor and a memory; The memory stores computer instructions; The processor is configured to read the computer instructions and execute the method according to any one of claims 1-16.

18. A readable computer storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions for causing a computer to execute the method according to any one of claims 1-16.

19. A computer program product, characterized in that, When the computer program product is called by a computer, the computer is caused to execute the method according to any one of claims 1-16.

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