Random access method and apparatus, and device, chip and storage medium

Abstract

Provided in the present application are a random access method and apparatus, and a device, a chip and a storage medium. The method comprises: receiving a first random access channel (RACH) configuration and / or a second RACH configuration, wherein the first RACH configuration and / or the second RACH configuration are used for configuring a plurality of physical random access channel (PRACH) resources; and sending a PRACH on a target PRACH resource, wherein the target PRACH resource is one of the plurality of PRACH resources configured by using the first RACH configuration and / or the second RACH configuration.

Description

Random access method, device, equipment, chip and storage medium Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a random access method, apparatus, device, chip and storage medium. Background Art

[0002] New Radio (NR) supports two types of random access: contention-based random access and non-contention-based random access. During the random access process corresponding to either type of random access, the terminal device needs to send a Physical Random Access Channel (PRACH) to the network device. However, how the terminal device determines the PRACH resource to use when sending the PRACH is an urgent problem that needs to be solved.

[0003] Summary of the Invention

[0004] The present application provides a random access method, apparatus, device, chip and storage medium.

[0005] In a first aspect, the random access method provided by the present application includes:

[0006] receiving a first random access channel (RACH) configuration and / or a second RACH configuration, where the first RACH configuration and / or the second RACH configuration are used to configure multiple physical random access channel (PRACH) resources;

[0007] A PRACH is sent on a target PRACH resource, where the target PRACH resource is one of the multiple PRACH resources configured by the first RACH configuration and / or the second RACH configuration.

[0008] In a second aspect, the random access method provided by this application includes:

[0009] Sending a first random access channel RACH configuration and / or a second RACH configuration, where the first RACH configuration and / or the second RACH configuration are used to configure multiple physical random access channel PRACH resources;

[0010] A PRACH is received on a target PRACH resource, where the target PRACH resource is one of the multiple PRACH resources configured by the first RACH configuration and / or the second RACH configuration.

[0011] In a third aspect, the random access device provided by the present application is applied to a terminal device, and the device includes:

[0012] A first receiving unit is configured to receive a first random access channel RACH configuration and / or a second RACH configuration, where the first RACH configuration and / or the second RACH configuration are used to configure multiple physical random access channel PRACH resources;

[0013] The first sending unit is configured to send a PRACH on a target PRACH resource, where the target PRACH resource is one of the multiple PRACH resources configured by the first RACH configuration and / or the second RACH configuration.

[0014] In a fourth aspect, the random access device provided by the present application is applied to a network device, and the device includes:

[0015] A second sending unit is configured to send a first random access channel RACH configuration and / or a second RACH configuration, where the first RACH configuration and / or the second RACH configuration are used to configure multiple physical random access channel PRACH resources;

[0016] The second receiving unit is configured to receive a PRACH on a target PRACH resource, where the target PRACH resource is one of the multiple PRACH resources configured by the first RACH configuration and / or the second RACH configuration.

[0017] In a fifth aspect, the present application provides a communication device comprising a memory, a processor, and a transceiver. The memory is used to store computer programs; the processor is connected to the memory and is used to retrieve and execute the computer programs from the memory to implement the method of the first or second aspect described above; and the transceiver is used to receive and send information during the process of transmitting and receiving information with other external devices.

[0018] In a sixth aspect, the present application provides a chip comprising a memory, a processor, and a transceiver. The memory is used to store computer programs; the processor is connected to the memory and is used to retrieve and execute the computer programs from the memory, causing a device equipped with the chip to perform the method of the first or second aspect described above; and the transceiver is used to receive and send information during the process of transmitting and receiving information to and from the device or chip.

[0019] In a seventh aspect, the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by at least one processor, it implements the method of the first aspect or the second aspect mentioned above.

[0020] In an eighth aspect, the computer program product provided in the present application includes a computer program or instructions, which, when executed by a processor, implements the method of the first or second aspect above.

[0021] In a ninth aspect, the present application provides a computer program, which enables a computer to execute the method of the first or second aspect above.

[0022] The present application provides a random access method in which a terminal device can receive a first RACH configuration and / or a second RACH configuration, where the first RACH configuration and / or the second RACH configuration are used to configure multiple PRACH resources; and transmit a PRACH on a target PRACH resource, where the target PRACH resource is one of the multiple PRACH resources configured by the first RACH configuration and / or the second RACH configuration. In this way, the terminal device can select the target PRACH resource from the multiple PRACH resources configured by the network device to transmit the PRACH. This ensures the reliability of random access, reduces random access contention conflicts between different terminal devices, and improves the success rate of random access. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] FIG1 is a schematic diagram of a communication architecture;

[0025] FIG2A is a schematic diagram of an uplink subband;

[0026] FIG2B is a second schematic diagram of an uplink subband;

[0027] FIG3 is a schematic diagram of a PRACH resource;

[0028] FIG4 is a second schematic diagram of a PRACH resource;

[0029] FIG5 is a third schematic diagram of a PRACH resource;

[0030] FIG6 is a schematic diagram of a PRACH resource provided in an embodiment of the present application;

[0031] FIG7 is a schematic diagram of a flow chart of a random access method provided in an embodiment of the present application;

[0032] FIG8 is a schematic diagram of the structure of a random access device 800 provided in an embodiment of the present application;

[0033] FIG9 is a schematic diagram of the structure of a random access device 900 provided in an embodiment of the present application;

[0034] FIG10 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0035] FIG11 is a schematic structural diagram of a chip provided in an embodiment of the present application;

[0036] FIG12 is a schematic block diagram of a communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0037] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0038] FIG1 is a schematic diagram of an application scenario of an embodiment of the present application.

[0039] As shown in Figure 1, a communication system 100 may include a terminal device 110 and a network device 120. The network device 120 may communicate with the terminal device 110 via an air interface. The terminal device 110 and the network device 120 support multi-service transmission.

[0040] It should be understood that the embodiments of the present application are only illustrative of the communication system 100, but the embodiments of the present application are not limited thereto. That is, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Internet of Things (IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine-Type Communications (eMTC) system, 5G communication system (also known as NR communication system), or future communication systems.

[0041] In the communication system 100 shown in Figure 1, the network device 120 may be an access network device that communicates with the terminal device 110. The access network device may provide communication coverage for a specific geographical area and may communicate with the terminal device 110 located within the coverage area.

[0042] The network device 120 may be an evolved Node B (eNB or eNodeB) in an LTE system, or a Next Generation Radio Access Network (NG RAN) device, or a base station (gNB) in an NR system, or a wireless controller in a Cloud Radio Access Network (CRAN), or the network device 120 may be a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, or a network device in a future evolved Public Land Mobile Network (PLMN), etc.

[0043] The terminal device 110 may be any terminal device, including but not limited to a terminal device connected to the network device 120 or other terminal devices by wire or wireless connection.

[0044] For example, the terminal device 110 may refer to an access terminal, user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user apparatus. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, an IoT device, a satellite handheld terminal, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolution network, etc.

[0045] The terminal device 110 can be used for device-to-device (D2D) communication.

[0046] FIG1 exemplarily shows a network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in this embodiment of the present application.

[0047] It should be noted that FIG1 is only an example of a system to which this application is applicable. Of course, the method shown in the embodiment of this application can also be applied to other systems. In addition, the terms "system" and "network" are often used interchangeably in this article.

[0048] In the following description, reference is made to “some embodiments”, which describes a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0049] It should be understood that the terms "first\second\third" involved in the embodiments of the present application are only used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged with a specific order or sequence where permitted, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0050] It should also be understood that the term "and / or" as used herein simply describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " as used herein generally indicates that the associated objects are in an "or" relationship.

[0051] It should also be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0052] It should also be understood that the "correspondence" mentioned in the embodiments of the present application may indicate a direct or indirect correspondence between the two, or an association between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0053] It should also be understood that the “predefined” or “predefined rules” mentioned in the embodiments of the present application can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices), and the present application does not limit its specific implementation method. For example, predefined can refer to what is defined in the protocol. It should also be understood that in the embodiments of the present application, the “protocol” may refer to a standard protocol in the field of communications, for example, it may include LTE protocols, NR protocols, and related protocols used in future communication systems, and the present application does not limit this.

[0054] To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following relevant technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application.

[0055] NR supports two types of random access: contention-based random access and non-contention-based random access. During the random access process corresponding to either type of random access, the terminal device needs to send a PRACH (i.e., Message 1 (Msg 1)) to the network device. For example, the terminal device is a subband full-duplex aware user equipment (SBFD-Aware UE).

[0056] The following uses the cell-common PRACH as an example to introduce the signaling structure of PRACH configuration:

[0057] The cell-common PRACH is configured in the common uplink bandwidth part (Bandwidth Part-Uplink Common, BWP-Uplink Common) by the common random access channel (RACH) configuration (RACH-ConfigCommon) or by the additional RACH configuration (AdditionRACH-Config). Each AdditionRACH-Config is associated with a feature or some feature combinations (Feature Combination).

[0058] In RACH-ConfigCommon, the parameters related to RACH resources are configured by the general RACH configuration (RACH-ConfigGeneric), the parameters related to the mapping of RACH to the synchronization signal and PBCH block (SSB), and the SSB in each (Per) RACH and the random access preamble (Preamble) code competing in each SSB (SSB-perRACH-OccasionAndCB-PreamblesPerSSB). The parameters related to the Feature / Feature Combination associated with RACH-ConfigCommon are configured by the feature combination Preambles list (featureCombinationPreamblesList).

[0059] The time domain / preamble resources of RACH are configured by the PRACH configuration index (PRACH-ConfigurationIndex). For example, the RACH time domain resources / preamble resources are given by three PRACH configuration tables, corresponding to different frequency bands and frequency band standards: one PRACH configuration table is the PRACH configuration for the frequency division duplex (FDD) band on frequency range 1 (Frequency Range, FR1), another PRACH configuration table is the PRACH configuration for the TDD band on FR1, and another PRACH configuration table is the PRACH configuration on FR2. The terminal device can specify the PRACH configuration table to be used when receiving the PRACH configuration based on the frequency band and frequency band standard of the cell where it is stationed. On this basis, the high-level signaling PRACH-ConfigurationIndex can indicate a serial number in the corresponding PRACH configuration table. The terminal device can obtain the PRACH time domain resource configuration information of the cell according to the corresponding PRACH configuration table. The PRACH time domain resource configuration information may include: the format of the PRACH sequence, the configuration period and the system frame number, the subframe / time slot number, the PRACH time slot, the starting symbol and the number of consecutive occurrences.

[0060] The frequency domain resources of RACH are configured by the parameters Msg 1-Frequency Division Multiplexing (FDM) (i.e., Msg1-FDM) and Msg 1-Starting frequency (FrequencyStart). For example, NR supports the configuration of 1, 2, 4, or 8 FDM PRACH resources, which are configured through the parameter Msg 1-FDM to expand the PRACH capacity. When more than one PRACH resource is configured in the frequency domain, these PRACH resources are continuously distributed in the frequency domain. The network device can use the parameter Msg1-FrequencyStart to notify the offset of the starting physical resource block (PRB) of the first random access opportunity (RACH Occasion, RO) resource in the frequency domain relative to the starting PRB of the BWP.

[0061] The RACH power parameters are configured by the preamble target received power (PreambleReceivedTargetPower) (i.e., the initial parameters configured by the Radio Resource Control (RRC)), the maximum number of preamble transmissions (PreambleTransMax), and the preamble power ramping step (Preamble_Power_Ramping_Step). For example, the terminal device can determine the transmit power of the PRACH transmission opportunity (Transmission Occasion) i on the carrier (Carrier) f and the serving cell (Serving Cell) c BWP b by the following formula: P PRACH,b,f,c (i) = min{P CMAX,f,c (i),P PRACH,target,f,c +PL b,f,c} (1)

[0062] Among them, P CMAX,f,c (i) may be the UE Configured Maximum Output Power; It can be the PRACH (preamble) target received power provided by the higher layers (ie, PRACH Target Reception Power Preamble_Received_Target_Power Provided by Higher Layers); PL b,f,c It may be the path loss corresponding to the reference signal measured by the terminal device. The reference signal may be SSB, Channel State Information-Reference Signal (CSI-RS), etc., and the embodiments of the present application are not limited to this.

[0063] During the random access process, if the terminal device sends a PRACH but does not receive a random access response (RAR) from the network device, or fails to successfully receive a conflict resolution message, the terminal device needs to resend the PRACH. If the terminal device supports multiple transmit beams, if the transmit beam remains unchanged, the transmit power of the retransmitted PRACH will be increased based on the power of the last transmitted PRACH until the random access process is successfully completed.

[0064] In addition, the protocol stipulates that for TDD spectrum, if a terminal device is provided with a TDD-uplink (UpLink, UL)-downlink (DownLink, DL)-common configuration, then it meets one or more of the following conditions as a valid (Valid) PRACH resource (or available RO), where the available PRACH resource may be a non-subband full-duplex (Subband Full Duplex, SBFD) PRACH resource:

[0065] (1) The PRACH resource is in a UL symbol; and / or,

[0066] (2) The PRACH resource does not precede the SSB in the PRACH timeslot, and the PRACH resource follows the last downlink symbol and is spaced at least N symbols from the downlink symbol, and the PRACH resource follows the last SSB symbol and is spaced at least N symbols from the last SSB (i.e., It does not Precede a SS / PBCH Block in the PRACH Slot and Starts at Least N_Gap Symbols after a Last DownLink Symbol and at Least N_Gap Symbols after a Last SS / PBCH Block Symbol).

[0067] To overcome problems such as weak uplink coverage, large uplink latency, and insufficient uplink capacity caused by insufficient uplink resource allocation in NR TDD, the 3rd Generation Partnership Project (3GPP) introduced Cross Division Duplex (XDD) technology in Release 18 (R18). This technology allows data to be sent and received simultaneously on different subbands in the same subframe / time slot / symbol. This technology is mainly used on the network equipment side, while the terminal device side still maintains the current state, that is, only data can be sent or received within a subframe / time slot / symbol.

[0068] The R19 SBFD work item (WI) stipulates that uplink transmission is within the uplink subband (UL subband) and downlink reception is within the downlink subband (DL subband); among them, the uplink subband refers to a continuous uplink frequency domain resource, and the downlink subband refers to a continuous downlink frequency domain resource.

[0069] 2A is a schematic diagram of an uplink subband 1. A middle subband of a downlink or flexible subframe / time slot / symbol can be configured as an uplink subband.

[0070] 2B is a schematic diagram of an uplink subband 2. A non-middle subband of a downlink or flexible subframe / time slot / symbol can be configured as an uplink subband.

[0071] In the RRC-Connected State, SBFD symbols can also support PRACH transmission; wherein, SBFD symbols can also be called DL symbols, and non-SBFD symbols can also be called UL symbols.

[0072] Related technologies propose two types of RACH configurations: non-SBFD-related RACH configurations and SBFD-related RACH configurations. The non-SBFD-related RACH configurations are also referred to as legacy RACH configurations, and the SBFD-related RACH configurations are also referred to as additional RACH configurations. Non-SBFD-related RACH configurations can be used to configure non-SBFD PRACH resources and / or SBFD PRACH resources, while SBFD-related RACH configurations can also be used to configure non-SBFD PRACH resources and / or SBFD PRACH resources.

[0073] It should be understood that non-SBFD PRACH resources can also be referred to as legacy PRACH resources, legacy ROs, UL symbols and / or ROs in flexible symbols, or ROs that meet the validity conditions in related technologies; SBFD PRACH resources can also be referred to as SBFD ROs, DL symbols configured with SBFD subbands, and / or ROs in flexible symbols.

[0074] The following briefly describes SBFD PRACH resources and non-SBFD PRACH resources with reference to FIG. 3 .

[0075] As shown in Figure 3, three Ds represent three downlink time slots. From left to right, the last two downlink time slots are configured with an uplink subband and a downlink subband. One S represents a flexible time slot, which is configured with an uplink subband and a downlink subband. Since the last two downlink time slots and the flexible time slot are configured with uplink subband and downlink subband, they are also called SBFD time slots. One U represents an uplink time slot.

[0076] It should be understood that the non-SBFD PRACH resources may be within the uplink timeslot, or the non-SBFD PRACH resources may be within the uplink timeslot and the flexible timeslot.

[0077] It should also be understood that the SBFD PRACH resources may be within the SBFD time slot, or the SBFD PRACH resources may be within the SBFD time slot, excluding the portion of the non-SBFD PRACH resources.

[0078] Related art proposes two options: Option 1 and Option 2. These two options are described below.

[0079] Option 1: SBFD-Aware UEs and UEs that cannot perceive SBFD (non-SBFD-Aware UEs) can reuse the same set of non-SBFD-related RACH configurations. The non-SBFD-related RACH configurations can be used to configure SBFD PRACH resources and / or non-SBFD PRACH resources. Among them, non-SBFD-Aware UEs are also called legacy UEs.

[0080] Figure 4 is a second schematic diagram of a PRACH resource. As shown in Figure 4, non-SBFD related RACH configuration can be used to configure PRACH resources 401. PRACH resources 401 can include SBFD PRACH resources located in SBFD timeslots and non-SBFD PRACH resources located in uplink timeslots.

[0081] It should be understood that the four Ds in Figure 4 represent four downlink time slots. In order from left to right, the uplink subband and the downlink subband are configured in the last three downlink time slots; at this time, the last three downlink time slots can also be called SBFD time slots; one U can represent an uplink time slot.

[0082] It should also be understood that non-SBFD PRACH resources may be within an uplink timeslot, and SBFD PRACH resources may be within an SBFD timeslot.

[0083] For PRACH resources (such as SBFD PRACH resources and non-SBFD PRACH resources), the availability of the PRACH resources to non-SBFD Aware UEs and SBFD Aware UEs may include:

[0084] (1) For non-SBFD-Aware UEs: non-SBFD PRACH resources are available, and SBFD PRACH resources are invalid.

[0085] (2) For SBFD-Aware UE: SBFD PRACH resources are available, while whether non-SBFD PRACH resources are available remains to be studied further (FFS).

[0086] Option 2: A non-SBFD-Aware UE may read the non-SBFD-related RACH configuration in the System Information Block (SIB) message. The SBFD-Aware UE may read the non-SBFD-related RACH configuration and the SBFD-related RACH configuration in the SIB message. The non-SBFD-related RACH configuration may be used to configure SBFD PRACH resources and / or non-SBFD PRACH resources. The SBFD-related RACH configuration may also be used to configure SBFD PRACH resources and / or non-SBFD PRACH resources.

[0087] FIG5 is a third schematic diagram of a PRACH resource. As shown in FIG5 , a non-SBFD-related RACH configuration may be used to configure a PRACH resource 501, which may include an SBFD PRACH resource located in an SBFD timeslot and a non-SBFD PRACH resource located in an uplink timeslot. An SBFD-related RACH configuration may be used to configure a PRACH resource 502, which may include an SBFD PRACH resource located in an SBFD timeslot and a non-SBFD PRACH resource located in an uplink timeslot.

[0088] It should be understood that the four Ds in Figure 5 represent four downlink time slots. In order from left to right, the uplink subband and the downlink subband are configured in the last three downlink time slots; at this time, the last three downlink time slots can also be called SBFD time slots; one U can represent an uplink time slot.

[0089] It should also be understood that non-SBFD PRACH resources may be within an uplink timeslot, and SBFD PRACH resources may be within an SBFD timeslot.

[0090] For PRACH resources (such as SBFD PRACH resources and non-SBFD PRACH resources), the availability of the PRACH resources to non-SBFD Aware UEs and SBFD Aware UEs may include:

[0091] (1) For non-SBFD-Aware UEs: non-SBFD PRACH resources configured with non-SBFD related RACH configurations are available, and SBFD PRACH resources configured with non-SBFD related RACH configurations are unavailable;

[0092] (2) For SBFD-Aware UE: SBFD PRACH resources configured by SBFD-related RACH configuration are available, while the availability of non-SBFD PRACH resources configured by SBFD-related RACH configuration, SBFD PRACH resources configured by non-SBFD-related RACH configuration, and non-SBFD PRACH resources is still FFS.

[0093] That is, SBFD-related RACH configuration and non-SBFD-related RACH configuration can configure the following four types of PRACH resources:

[0094] Type 1: Non-SBFD PRACH resources configured with non-SBFD related RACH configuration;

[0095] Type 2: SBFD PRACH resources configured with non-SBFD related RACH configuration;

[0096] Type 3: Non-SBFD PRACH resources configured with SBFD-related RACH configuration;

[0097] Type 4: SBFD PRACH resources configured with SBFD-related RACH configuration.

[0098] Among them, for SBFD-Aware UE, Type 4 PRACH resources are available, and the availability of the other three types of PRACH resources is still FFS.

[0099] In the embodiment of the present application, for SBFD-Aware UE, in Option 1, the SBFD PRACH resources configured by the non-SBFD related RACH configuration are available, and it can be assumed that the non-SBFD PRACH resources configured by the non-SBFD related RACH configuration are available.

[0100] In an embodiment of the present application, for an SBFD-Aware UE, in Option 2, as shown in FIG6 , a non-SBFD-related RACH configuration may be used to configure a PRACH resource 601, where the PRACH resource 601 may include an SBFD PRACH resource located on an SBFD timeslot and a non-SBFD PRACH resource located on an uplink timeslot; and a SBFD-related RACH configuration may be used to configure a PRACH resource 602, where the PRACH resource 602 may include an SBFD PRACH resource located on an SBFD timeslot and a non-SBFD PRACH resource located on an uplink timeslot.

[0101] It should be understood that the 4 Ds in Figure 6 represent 4 downlink time slots. In order from left to right, the uplink subband and downlink subband are configured in the last three downlink time slots; at this time, the last three downlink time slots can also be called SBFD time slots; one U can represent an uplink time slot.

[0102] It should also be understood that non-SBFD PRACH resources may be within an uplink timeslot, and SBFD PRACH resources may be within an SBFD timeslot.

[0103] For PRACH resources (such as SBFD PRACH resources and non-SBFD PRACH resources), SBFD PRACH resources configured by SBFD-related RACH configuration (i.e., Type 4 PRACH resources) are available. It can be assumed that non-SBFD PRACH resources configured by SBFD-related RACH configuration (i.e., Type 3 PRACH resources) and non-SBFD PRACH resources configured by non-SBFD-related RACH configuration (i.e., Type 1 PRACH resources) are also available, and SBFD PRACH resources configured by non-SBFD-related RACH configuration (i.e., Type 2 PRACH resources) are unavailable. In other words, Type 1, Type 3, and Type 4 PRACH resources are all available, and Type 2 PRACH resources are unavailable.

[0104] It should be noted that, when PRACH resources are available, the PRACH resources can be used by a terminal device (such as an SBFD-Aware UE) to send PRACH; when PRACH resources are unavailable, the PRACH resources cannot be used by the terminal device to send PRACH. For example, for an SBFD-Aware UE, the SBFD PRACH resources configured with an SBFD-related RACH configuration are available, and the SBFD-Aware UE can send PRACH on the SBFD PRACH resources; for another example, for an SBFD-Aware UE, the SBFD PRACH resources configured with a non-SBFD-related RACH configuration are unavailable, and the SBFD-Aware UE cannot send PRACH on the SBFD PRACH resources.

[0105] For some types of terminal devices (such as SBFD-Aware UEs), based on the assumptions of Option 1 above, both SBFD PRACH resources configured with non-SBFD-related RACH configurations and non-SBFD PRACH resources are available. Based on the assumptions of Option 2, non-SBFD PRACH resources configured with non-SBFD-related RACH configurations (i.e., Type 1 PRACH resources), SBFD PRACH resources configured with SBFD-related RACH configurations (i.e., Type 4 PRACH resources), and non-SBFD PRACH resources (i.e., Type 3 PRACH resources) are all available. How a terminal device determines the PRACH resource to use when sending a PRACH among multiple available PRACH resources is an urgent issue that needs to be addressed.

[0106] Based on this, an embodiment of the present application provides a random access method, in which a terminal device can receive a first RACH configuration and / or a second RACH configuration, where the first RACH configuration and / or the second RACH configuration are used to configure multiple PRACH resources; and transmit a PRACH on a target PRACH resource, where the target PRACH resource is one of the multiple PRACH resources configured by the first RACH configuration and / or the second RACH configuration. In this way, the terminal device can select a target PRACH resource from the multiple PRACH resources configured by the network device to transmit the PRACH. In this way, the reliability of random access can be guaranteed, the conflict of random access contention between different terminal devices can be reduced, and the success rate of random access can be improved.

[0107] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related technologies can be combined arbitrarily with the technical solutions of the embodiments of the present application as optional solutions, and all of them fall within the scope of protection of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0108] FIG7 is a flow chart of a random access method provided in an embodiment of the present application. As shown in FIG7 , the method may include the following steps.

[0109] S710. The network device sends a first RACH configuration and / or a second RACH configuration to the terminal device, where the first RACH configuration and / or the second RACH configuration is used to configure multiple PRACH resources.

[0110] S720: The terminal device sends a PRACH to the network device on a target PRACH resource, where the target PRACH resource is one of the multiple PRACH resources configured by the first RACH configuration and / or the second RACH configuration.

[0111] Accordingly, the terminal device may receive the first RACH configuration and / or the second RACH configuration sent by the network device.

[0112] Accordingly, the network device can receive the PRACH sent by the terminal device on the target PRACH resource.

[0113] Exemplarily, the terminal device may be a terminal device that can perceive SBFD, for example, the terminal device may be an SBFD-Aware UE.

[0114] In some embodiments, the first RACH configuration is a non-SBFD related RACH configuration, and the second RACH configuration is a SBFD related RACH configuration.

[0115] It should be noted that non-SBFD-related RACH configurations can also be referred to as legacy RACH configurations, and SBFD-related RACH configurations can also be referred to as additional RACH configurations. Non-SBFD-related RACH configurations can be used to configure non-SBFD PRACH resources and / or SBFD PRACH resources, and SBFD-related RACH configurations can also be used to configure non-SBFD PRACH resources and / or SBFD PRACH resources.

[0116] Furthermore, non-SBFD PRACH resources may also be referred to as legacy PRACH resources, legacy ROs, UL symbols and / or ROs in flexible symbols, or ROs that meet the validity conditions in the relevant technology; SBFD PRACH resources may also be referred to as SBFD ROs, DL symbols configured with SBFD subbands, and / or ROs in flexible symbols.

[0117] Based on Option 1 and Option 2 in the aforementioned embodiment, the network device sends the first RACH configuration and / or the second RACH configuration to the terminal device, which may include: the network device sends the first RACH configuration (corresponding to Option 1) to the terminal device; or, the network device sends the first RACH configuration and the second RACH configuration (corresponding to Option 2) to the terminal device. Based on the different types of RACH configurations sent by the network device, the target PRACH resource can be determined in the following two ways:

[0118] Method #A (corresponding to Option 1): The network device sends a first RACH configuration to the terminal device, where the first RACH configuration is used to configure a first PRACH resource and a second PRACH resource; the target PRACH resource is the first PRACH resource or the second PRACH resource.

[0119] Through this method, the terminal device can select the target PRACH resource from the first PRACH resource or the second PRACH resource configured by the network device to send PRACH. In this way, the reliability of random access can be guaranteed, the conflict of random access between different terminal devices can be reduced, and the success rate of random access can be improved.

[0120] Method #B (corresponding to Option 2): The network device sends a first RACH configuration and a second RACH configuration to the terminal device, where the first RACH configuration is used to configure a third PRACH resource; the second RACH configuration is used to configure the first PRACH resource and / or the second PRACH resource; the target PRACH resource is one of the multiple PRACH resources configured by the first RACH configuration and the second RACH configuration.

[0121] Exemplarily, the first PRACH resource and the third PRACH resource are both non-SBFD PRACH resources, and the second PRACH resource and the fourth PRACH resource mentioned in subsequent embodiments are both SBFD PRACH resources.

[0122] It should be understood that in this embodiment of the present application, the first PRACH resource may be the first PRACH resource configured by the first RACH configuration in Option 1, or the first PRACH resource configured by the second RACH configuration in Option 2; the second PRACH resource may be the second PRACH resource configured by the first RACH configuration in Option 1, or the second PRACH resource configured by the second RACH configuration in Option 2.

[0123] Through this method, the terminal device can select the target PRACH resource from the multiple PRACH resources configured by the network device to send PRACH. In this way, the reliability of random access can be guaranteed, the conflicts of random access between different terminal devices can be reduced, and the success rate of random access can be improved.

[0124] Based on method #B, the second RACH configuration can be configured with different types of PRACH resources. In this case, the target PRACH resource can be determined in the following ways:

[0125] Mode #B1: The first RACH configuration is used to configure the third PRACH resource; the second RACH configuration is used to configure the second PRACH resource; the target PRACH resource is the third PRACH resource or the second PRACH resource.

[0126] Through this method, the terminal device can select the target PRACH resource from the third PRACH resource or the second PRACH resource configured by the network device to send PRACH. In this way, the reliability of random access can be guaranteed, the conflict of random access between different terminal devices can be reduced, and the success rate of random access can be improved.

[0127] Mode #B2: The first RACH configuration is used to configure the third PRACH resource; the second RACH configuration is used to configure the first PRACH resource and the second PRACH resource; the target PRACH resource is one of the third PRACH resource, the first PRACH resource, and the second PRACH resource.

[0128] Through this method, the terminal device can select the target PRACH resource from the third PRACH resource, the first PRACH resource, and the second PRACH resource configured by the network device to send the PRACH. This can not only ensure the reliability of random access, but also reduce the conflicts caused by random access between different terminal devices, thereby improving the success rate of random access.

[0129] Based on method #B2, the target PRACH resource can be determined in the following ways:

[0130] Method #B21: The network device can send second information to the terminal device; wherein the second information is used to indicate the priority of the first PRACH resource, the second PRACH resource, and the third PRACH resource, and the target PRACH resource is the PRACH resource with the highest priority among the first PRACH resource, the second PRACH resource, and the third PRACH resource; or, the second information is used to instruct the terminal device to select one of the first PRACH resource, the second PRACH resource, and the third PRACH resource as the target PRACH resource.

[0131] Correspondingly, the terminal device can receive the second information sent by the network device.

[0132] Through this method, the network device can directly configure the three PRACH resources as the same dimension priority without distinguishing the types of RACH configurations, thereby making the selection of the target PRACH resource simpler and improving the efficiency of determining the target PRACH resource.

[0133] Method #B22: The target PRACH resource is specified by the protocol or configured by the network device, and the target PRACH resource is the first PRACH resource or the second PRACH resource.

[0134] That is, the target PRACH resource is the PRACH resource configured by the second RACH configuration. Further, the target PRACH resource may be the first PRACH resource or the second PRACH resource.

[0135] By using this method, when selecting a target PRACH resource, the RACH configuration can be selected first, thereby reducing the types of RACH configurations, simplifying the complexity of terminal devices selecting different types of RACH configurations, and simplifying the implementation of terminal devices / network devices.

[0136] An embodiment of the present application provides a random access method, in which a terminal device can receive a first RACH configuration and / or a second RACH configuration, where the first RACH configuration and / or the second RACH configuration are used to configure multiple PRACH resources; and transmit a PRACH on a target PRACH resource, where the target PRACH resource is one of the multiple PRACH resources configured by the first RACH configuration and / or the second RACH configuration. In this way, the terminal device can select the target PRACH resource from the multiple PRACH resources configured by the network device to transmit the PRACH. This ensures the reliability of random access, reduces conflicts in random access contention between different terminal devices, and improves the success rate of random access.

[0137] Based on approach #A and approach #B22, the target PRACH resource is the first PRACH resource or the second PRACH resource. There are several possible implementations for determining the target PRACH resource from the first PRACH resource and the second PRACH resource.

[0138] In a possible implementation manner, the target PRACH resource is specified by a protocol, and the target PRACH resource is a second PRACH resource.

[0139] Through this method, since certain types of terminal devices (such as non-SBFD-Aware UEs) cannot send PRACH on the second PRACH resource, other types of terminal devices (such as SBFD-Aware UEs) preferentially select the second PRACH resource as the target PRACH resource, which can reduce the probability of conflict between the first PRACH resource and certain types of terminal devices. In addition, the network device can identify the type of terminal device (for example, whether the terminal device is an SBFD-Aware UE) by receiving the PRACH on the second PRACH resource, thereby enabling the network device to provide guidance for scheduling subsequent steps of random access.

[0140] Another possible implementation method is that the network device sends first information to the terminal device; wherein the first information is used to indicate the priority of the first PRACH resource and the second PRACH resource, and the target PRACH resource is the PRACH resource with the highest priority among the first PRACH resource and the second PRACH resource; or, the first information is used to instruct the terminal device to select the first PRACH resource or the second PRACH resource as the target PRACH resource.

[0141] Accordingly, the terminal device can receive the first information sent by the network device.

[0142] Through this method, the network device can instruct the terminal device to select the target PRACH resource according to the different situations of different terminal devices. For example, when the terminal device is located in the center of the cell, the network device can instruct the terminal device to use the second PRACH resource to send PRACH, so as to reduce the conflict on the first PRACH resource; when the terminal device is located at the edge of the cell, the network device can instruct the terminal device to use the first PRACH resource to send PRACH, so as to avoid the PRACH transmission power of the second PRACH resource being too high, causing excessive cross-link interference (Cross Link Interference, CLI) to the uplink transmission of the uplink subband. In addition, by indicating the target PRACH resource selected by the terminal device through the network device, a load balancing effect can be achieved.

[0143] In another possible implementation, the target PRACH resource is determined based on one or more of the following:

[0144] received power or energy of the first reference signal;

[0145] a path loss corresponding to the first reference signal;

[0146] Cross-link interference levels measured by terminal equipment;

[0147] The frequency domain position of the second PRACH resource.

[0148] It should be noted that the first reference signal may be associated with the PRACH.

[0149] Exemplarily, the first reference signal may be SSB, CSI-RS, etc., which is not limited in the embodiments of the present application.

[0150] In some embodiments, when the received power or energy of a first reference signal (RS) is greater than or equal to a first threshold, the target PRACH resource is a second PRACH resource; and / or, when the received power or energy of the first reference signal is less than or equal to the first threshold, the target PRACH resource is the first PRACH resource.

[0151] It should be noted that the first threshold may be specified by the protocol or configured on the network side, or may be set in other ways, and the embodiments of the present application do not limit this.

[0152] It should also be noted that the first threshold can be a critical value. When the received power or energy of the first reference signal is equal to the first threshold, the target PRACH resource can be the first PRACH resource or the second PRACH resource. This embodiment of the present application does not limit this.

[0153] Exemplarily, when the received power or energy of the first reference signal is greater than or equal to a first threshold, the target PRACH resource is the second PRACH resource; and / or, when the received power or energy of the first reference signal is less than the first threshold, the target PRACH resource is the first PRACH resource.

[0154] Exemplarily, when the received power or energy of the first reference signal is greater than a first threshold, the target PRACH resource is the second PRACH resource; and / or, when the received power or energy of the first reference signal is less than or equal to the first threshold, the target PRACH resource is the first PRACH resource.

[0155] Through this method, when the received power or energy of the first reference signal is high (such as greater than the first threshold), the terminal device may be located in a relatively central position of the cell. At this time, the power used by the terminal device to send PRACH is also low, so using the second PRACH resource to send PRACH will not generate a large CLI; when the received power or energy of the first reference signal is low (such as less than the first threshold), the terminal device may be located in a relatively edge position of the cell. At this time, the power used by the terminal device to send PRACH is also large, so the first PRACH resource is used to send PRACH to avoid generating a large CLI.

[0156] In some embodiments, when the path loss corresponding to the first reference signal is less than or equal to the second threshold, the target PRACH resource is the second PRACH resource; and / or, when the path loss corresponding to the first reference signal is greater than or equal to the second threshold, the target PRACH resource is the first PRACH resource.

[0157] It should be noted that the second threshold may be specified by the protocol or configured on the network device side, or may be set in other ways, and the embodiments of the present application do not limit this.

[0158] It should also be noted that the second threshold can be a critical value. When the path loss corresponding to the first reference signal is equal to the second threshold, the target PRACH resource can be the first PRACH resource or the second PRACH resource. This embodiment of the present application does not limit this.

[0159] Exemplarily, when the path loss corresponding to the first reference signal is less than or equal to the second threshold, the target PRACH resource is the second PRACH resource; and / or, when the path loss corresponding to the first reference signal is greater than the second threshold, the target PRACH resource is the first PRACH resource.

[0160] Exemplarily, when the path loss corresponding to the first reference signal is less than a second threshold, the target PRACH resource is the second PRACH resource; and / or, when the path loss corresponding to the first reference signal is greater than or equal to the second threshold, the target PRACH resource is the first PRACH resource.

[0161] Through this method, when the path loss corresponding to the first reference signal is low (such as less than the second threshold), the terminal device may be located in a relatively central position of the cell. At this time, the power used by the terminal device to send PRACH is also low, and thus using the second PRACH resource to send PRACH will not generate a large CLI; when the path loss corresponding to the first reference signal is high (such as greater than the second threshold), the terminal device may be located in a relatively edge position of the cell. At this time, the power used by the terminal device to send PRACH is also large, and thus using the first PRACH resource to send PRACH can avoid generating a large CLI.

[0162] In some embodiments, when the cross-link interference (CLI) measured by the terminal device is less than or equal to a third threshold, the target PRACH resource is the second PRACH resource; and / or, when the cross-link interference (CLI) measured by the terminal device is greater than or equal to the third threshold, the target PRACH resource is the first PRACH resource.

[0163] It should be noted that the third threshold may be specified by the protocol or configured on the network device side, or may be set in other ways, and this embodiment of the present application does not limit this.

[0164] It should also be noted that the third threshold can be a critical value. When the CLI measured by the terminal device is equal to the third threshold, the target PRACH resource can be the first PRACH resource or the second PRACH resource. This embodiment of the present application does not limit this.

[0165] Exemplarily, when the CLI measured by the terminal device is less than or equal to a third threshold, the target PRACH resource is the second PRACH resource; and / or, when the CLI measured by the terminal device is greater than the third threshold, the target PRACH resource is the first PRACH resource.

[0166] Exemplarily, when the CLI measured by the terminal device is less than a third threshold, the target PRACH resource is the second PRACH resource; and / or, when the CLI measured by the terminal device is greater than or equal to the third threshold, the target PRACH resource is the first PRACH resource.

[0167] Through this method, when the CLI measured by the terminal device is small (such as less than the third threshold), using the second PRACH resource to send PRACH will not generate a larger CLI; when the CLI measured by the terminal device is large (such as greater than the third threshold), the first PRACH resource is used to send PRACH to avoid generating a larger CLI.

[0168] In some embodiments, when the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is greater than or equal to a fourth threshold, the target PRACH resource is the second PRACH resource; and / or, when the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is less than or equal to the fourth threshold, the target PRACH resource is the first PRACH resource.

[0169] The downlink subband refers to a continuous downlink frequency domain resource. The downlink subband is located in an SBFD symbol (time slot). The SBFD symbol is a DL symbol and / or Flexible symbol configured with an uplink subband and / or a downlink subband.

[0170] It should be noted that the fourth threshold may be specified by the protocol or configured on the network device side, or may be set in other ways, and this embodiment of the present application does not limit this.

[0171] It should also be noted that the fourth threshold can be a critical value. When the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is equal to the fourth threshold, the target PRACH resource can be the first PRACH resource or the second PRACH resource. This embodiment of the present application does not limit this.

[0172] Exemplarily, when the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is greater than or equal to a fourth threshold, the target PRACH resource is the second PRACH resource; and / or, when the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is less than the fourth threshold, the target PRACH resource is the first PRACH resource.

[0173] Exemplarily, when the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is greater than a fourth threshold, the target PRACH resource is the second PRACH resource; and / or, when the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is less than or equal to the fourth threshold, the target PRACH resource is the first PRACH resource.

[0174] Furthermore, in some embodiments, the frequency domain offset between the second PRACH resource and the boundary of the downlink subband includes one or more of the following:

[0175] A frequency domain offset between a starting position of the second PRACH resource and a starting position of the downlink subband;

[0176] A frequency domain offset between an end position of the second PRACH resource and an end position of the downlink subband;

[0177] The frequency domain offset between the starting position of the second PRACH resource and the ending position of the downlink subband;

[0178] The frequency domain offset between the end position of the second PRACH resource and the start position of the downlink subband.

[0179] Through this method, when the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is greater than or equal to the fourth threshold, the CLI generated by the second PRACH resource for the downlink subband is relatively small, and using the second PRACH resource to send PRACH will not generate a large CLI; when the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is less than or equal to the fourth threshold, the CLI generated by the second PRACH resource for the downlink subband is relatively large, and the first PRACH resource is used to send PRACH to avoid generating a larger CLI.

[0180] In another possible implementation, the target PRACH resource is determined based on a first preset condition; wherein the first preset condition includes: whether there is a first PRACH resource and / or a second PRACH resource within a first time window after the random access process is started.

[0181] It should be noted that the first time window may be specified by a protocol or configured by a network device, or may be set in other ways, and this embodiment of the present application does not limit this.

[0182] Further, in some embodiments, in the presence of a first PRACH resource and a second PRACH resource, the target PRACH resource is the second PRACH resource; and / or, in the presence of a first PRACH resource and no second PRACH resource, the target PRACH resource is the first PRACH resource; and / or, in the presence of a second PRACH resource and no first PRACH resource, the target PRACH resource is the second PRACH resource.

[0183] That is, when there are first and second PRACH resources, the target PRACH resource is the second PRACH resource; and / or, when there is only the first PRACH resource, the target PRACH resource is the first PRACH resource; and / or, when there is only the second PRACH resource, the target PRACH resource is the second PRACH resource.

[0184] Through this method, based on the introduction of the first time window, the second PRACH resource can be selected as the target PRACH resource within a certain delay range, thereby reducing the conflict with the first PRACH resource and ensuring the delay requirement.

[0185] In another possible implementation, the network device may send first information to the terminal device, and the target PRACH resource may be determined based on the first information and one or more of the following:

[0186] received power or energy of the first reference signal;

[0187] a path loss corresponding to the first reference signal;

[0188] Cross-link interference levels measured by terminal equipment;

[0189] The frequency domain position of the second PRACH resource;

[0190] The first information is used to indicate the priority of the first PRACH resource and the second PRACH resource; or, the first information is used to instruct the terminal device to select the first PRACH resource or the second PRACH resource as the target PRACH resource.

[0191] Accordingly, the terminal device can receive the first information sent by the network device.

[0192] In some embodiments, the target PRACH resource may be determined based on the first information and the received power or energy of the first reference signal.

[0193] Exemplarily, when the first information indicates that the priority of the second PRACH resource is higher than the priority of the first PRACH resource, if the received power or energy of the first reference signal is greater than or equal to the first threshold, the target PRACH resource is the second PRACH resource; if the received power or energy of the first reference signal is less than or equal to the first threshold, the target PRACH resource is the first PRACH resource.

[0194] Exemplarily, when the first information indicates that the terminal device selects the first PRACH resource as the target PRACH resource, if the received power or energy of the first reference signal is less than or equal to the first threshold, the target PRACH resource is the first PRACH resource; if the received power or energy of the first reference signal is greater than or equal to the first threshold, the target PRACH resource is the second PRACH resource.

[0195] In some embodiments, the target PRACH resource may be determined based on the first information and a path loss corresponding to the first reference signal.

[0196] Exemplarily, when the first information indicates that the priority of the second PRACH resource is higher than the priority of the first PRACH resource, if the path loss corresponding to the first reference signal is less than or equal to the second threshold, the target PRACH resource is the second PRACH resource; if the path loss corresponding to the first reference signal is greater than or equal to the second threshold, the target PRACH resource is the first PRACH resource.

[0197] Exemplarily, when the first information indicates that the terminal device selects the first PRACH resource as the target PRACH resource, if the path loss corresponding to the first reference signal is greater than or equal to the second threshold, the target PRACH resource is the first PRACH resource; if the path loss corresponding to the first reference signal is less than or equal to the second threshold, the target PRACH resource is the second PRACH resource.

[0198] In some embodiments, the target PRACH resource may be determined based on the first information and a cross-link interference level measured by the terminal device.

[0199] Exemplarily, when the first information indicates that the priority of the second PRACH resource is higher than the priority of the first PRACH resource, if the CLI measured by the terminal device is less than or equal to the third threshold, the target PRACH resource is the second PRACH resource; if the CLI measured by the terminal device is greater than or equal to the third threshold, the target PRACH resource is the first PRACH resource.

[0200] Exemplarily, when the first information indicates that the terminal device selects the first PRACH resource as the target PRACH resource, if the CLI measured by the terminal device is greater than or equal to the third threshold, the target PRACH resource is the first PRACH resource; if the CLI measured by the terminal device is less than or equal to the third threshold, the target PRACH resource is the second PRACH resource.

[0201] In some embodiments, the target PRACH resource may be determined based on the first information and the frequency domain location of the second PRACH resource.

[0202] Exemplarily, when the first information indicates that the priority of the second PRACH resource is higher than the priority of the first PRACH resource, if the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is greater than or equal to a fourth threshold, the target PRACH resource is the second PRACH resource; if the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is less than or equal to the fourth threshold, the target PRACH resource is the first PRACH resource.

[0203] Exemplarily, when the first information indicates that the terminal device selects the first PRACH resource as the target PRACH resource, if the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is less than or equal to the fourth threshold, the target PRACH resource is the first PRACH resource; if the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is greater than or equal to the fourth threshold, the target PRACH resource is the second PRACH resource.

[0204] In another possible implementation, the network device may send first information to the terminal device, and the target PRACH resource may be determined based on the first information and a first preset condition; wherein the first information is used to indicate the priority of the first PRACH resource and the second PRACH resource; or, the first information is used to instruct the terminal device to select the first PRACH resource or the second PRACH resource as the target PRACH resource; the first preset condition includes: whether there is a first PRACH resource and / or a second PRACH resource within a first time window after the random access process is started.

[0205] Accordingly, the terminal device can receive the first information sent by the network device.

[0206] Exemplarily, when the first information indicates that the priority of the second PRACH resource is higher than the priority of the first PRACH resource, if the first PRACH resource and the second PRACH resource exist in the first time window, the target PRACH resource is the second PRACH resource; if the first PRACH resource exists in the first time window and the second PRACH resource does not exist, the target PRACH resource is the first PRACH resource; if the second PRACH resource exists in the first time window and the first PRACH resource does not exist, the target PRACH resource is the second PRACH resource.

[0207] Exemplarily, when the first information indicates that the terminal device selects the first PRACH resource as the target PRACH resource, if the first PRACH resource and the second PRACH resource exist in the first time window, the target PRACH resource is the first PRACH resource; if the first PRACH resource exists in the first time window and the second PRACH resource does not exist, the target PRACH resource is the first PRACH resource; if the second PRACH resource exists in the first time window and the first PRACH resource does not exist, the target PRACH resource is the second PRACH resource.

[0208] In another possible implementation, the target PRACH resource is determined based on the first preset condition and one or more of the following:

[0209] received power or energy of the first reference signal;

[0210] a path loss corresponding to the first reference signal;

[0211] Cross-link interference levels measured by terminal equipment;

[0212] The frequency domain position of the second PRACH resource;

[0213] The first preset condition includes: whether there is a first PRACH resource and / or a second PRACH resource within a first time window after the random access process is started.

[0214] In some embodiments, the target PRACH resource may be determined based on a first preset condition and received power or energy of a first reference signal.

[0215] Exemplarily, when the received power or energy of the first reference signal is greater than or equal to the first threshold, if there are first PRACH resources and second PRACH resources in the first time window, the target PRACH resource is the second PRACH resource; if there are first PRACH resources in the first time window and there are no second PRACH resources, the target PRACH resource is the first PRACH resource; if there are second PRACH resources in the first time window and there are no first PRACH resources, the target PRACH resource is the second PRACH resource.

[0216] Exemplarily, when the received power or energy of the first reference signal is less than or equal to the first threshold, if there are first PRACH resources and second PRACH resources in the first time window, the target PRACH resource is the first PRACH resource; if there are first PRACH resources in the first time window and there are no second PRACH resources, the target PRACH resource is the first PRACH resource; if there are second PRACH resources in the first time window and there are no first PRACH resources, the target PRACH resource is the second PRACH resource.

[0217] In some embodiments, the target PRACH resource may be determined based on a first preset condition and a path loss corresponding to the first reference signal.

[0218] Exemplarily, when the path loss corresponding to the first reference signal is less than or equal to the second threshold, if there are a first PRACH resource and a second PRACH resource in the first time window, the target PRACH resource is the second PRACH resource; if there is a first PRACH resource in the first time window and there is no second PRACH resource, the target PRACH resource is the first PRACH resource; if there is a second PRACH resource in the first time window and there is no first PRACH resource, the target PRACH resource is the second PRACH resource.

[0219] Exemplarily, when the path loss corresponding to the first reference signal is greater than or equal to the second threshold, if there are a first PRACH resource and a second PRACH resource in the first time window, the target PRACH resource is the first PRACH resource; if there is a first PRACH resource in the first time window and there is no second PRACH resource, the target PRACH resource is the first PRACH resource; if there is a second PRACH resource in the first time window and there is no first PRACH resource, the target PRACH resource is the second PRACH resource.

[0220] In some embodiments, the target PRACH resource may be determined based on a first preset condition and a cross-link interference level measured by the terminal device.

[0221] Exemplarily, when the CLI measured by the terminal device is less than or equal to a third threshold, if there are a first PRACH resource and a second PRACH resource in the first time window, the target PRACH resource is the second PRACH resource; if there is a first PRACH resource in the first time window and there is no second PRACH resource, the target PRACH resource is the first PRACH resource; if there is a second PRACH resource in the first time window and there is no first PRACH resource, the target PRACH resource is the second PRACH resource.

[0222] Exemplarily, when the CLI measured by the terminal device is greater than or equal to a third threshold, if there are a first PRACH resource and a second PRACH resource in the first time window, the target PRACH resource is the first PRACH resource; if there is a first PRACH resource in the first time window and there is no second PRACH resource, the target PRACH resource is the first PRACH resource; if there is a second PRACH resource in the first time window and there is no first PRACH resource, the target PRACH resource is the second PRACH resource.

[0223] In some embodiments, the target PRACH resource may be determined based on the first preset condition and the frequency domain location of the second PRACH resource.

[0224] Exemplarily, when the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is greater than or equal to a fourth threshold, if the first PRACH resource and the second PRACH resource exist in the first time window, the target PRACH resource is the second PRACH resource; if the first PRACH resource exists in the first time window and the second PRACH resource does not exist, the target PRACH resource is the first PRACH resource; if the second PRACH resource exists in the first time window and the first PRACH resource does not exist, the target PRACH resource is the second PRACH resource.

[0225] Exemplarily, when the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is less than or equal to a fourth threshold, if the first PRACH resource and the second PRACH resource exist in the first time window, the target PRACH resource is the first PRACH resource; if the first PRACH resource exists in the first time window and the second PRACH resource does not exist, the target PRACH resource is the first PRACH resource; if the second PRACH resource exists in the first time window and the first PRACH resource does not exist, the target PRACH resource is the second PRACH resource.

[0226] In another possible implementation, the network device may send first information to the terminal device, and the target PRACH resource may be determined based on the first information, the first preset condition, and one or more of the following:

[0227] received power or energy of the first reference signal;

[0228] a path loss corresponding to the first reference signal;

[0229] Cross-link interference levels measured by terminal equipment;

[0230] The frequency domain position of the second PRACH resource;

[0231] The first information is used to indicate the priority of the first PRACH resource and the second PRACH resource; or, the first information is used to instruct the terminal device to select the first PRACH resource or the second PRACH resource as the target PRACH resource; the first preset condition includes: whether there is a first PRACH resource and / or a second PRACH resource within the first time window after the random access process is started.

[0232] Accordingly, the terminal device can receive the first information sent by the network device.

[0233] In some embodiments, the target PRACH resource may be determined based on the first information, the first preset condition, and the received power or energy of the first reference signal.

[0234] Exemplarily, when the first information indicates that the priority of the second PRACH resource is higher than the priority of the first PRACH resource, if the received power or energy of the first reference signal is greater than or equal to the first threshold, and the first PRACH resource and the second PRACH resource exist in the first time window, then the target PRACH resource is the second PRACH resource; if the received power or energy of the first reference signal is greater than or equal to the first threshold, and the first PRACH resource exists in the first time window and the second PRACH resource does not exist, then the target PRACH resource is the first PRACH resource; if the received power or energy of the first reference signal is greater than or equal to the first threshold, and the second PRACH resource exists in the first time window and the first PRACH resource does not exist, then the target PRACH resource is the second PRACH resource.

[0235] Exemplarily, when the first information indicates that the priority of the second PRACH resource is higher than the priority of the first PRACH resource, if the received power or energy of the first reference signal is less than or equal to the first threshold, and the first PRACH resource and the second PRACH resource exist in the first time window, then the target PRACH resource is the first PRACH resource; if the received power or energy of the first reference signal is less than or equal to the first threshold, and the first PRACH resource exists in the first time window and the second PRACH resource does not exist, then the target PRACH resource is the first PRACH resource; if the received power or energy of the first reference signal is less than or equal to the first threshold, and the second PRACH resource exists in the first time window and the first PRACH resource does not exist, then the target PRACH resource is the second PRACH resource.

[0236] Exemplarily, when the first information indicates that the terminal device selects the first PRACH resource as the target PRACH resource, if the received power or energy of the first reference signal is less than or equal to the first threshold, and the first PRACH resource and the second PRACH resource exist in the first time window, then the target PRACH resource is the first PRACH resource; if the received power or energy of the first reference signal is less than or equal to the first threshold, and the first PRACH resource exists in the first time window and the second PRACH resource does not exist, then the target PRACH resource is the first PRACH resource; if the received power or energy of the first reference signal is less than or equal to the first threshold, and the second PRACH resource exists in the first time window and the first PRACH resource does not exist, then the target PRACH resource is the second PRACH resource.

[0237] Exemplarily, when the first information indicates that the terminal device selects the first PRACH resource as the target PRACH resource, if the received power or energy of the first reference signal is greater than or equal to the first threshold, and the first PRACH resource and the second PRACH resource exist in the first time window, then the target PRACH resource is the second PRACH resource; if the received power or energy of the first reference signal is greater than or equal to the first threshold, and the first PRACH resource exists in the first time window and the second PRACH resource does not exist, then the target PRACH resource is the first PRACH resource; if the received power or energy of the first reference signal is greater than or equal to the first threshold, and the second PRACH resource exists in the first time window and the first PRACH resource does not exist, then the target PRACH resource is the second PRACH resource.

[0238] In some embodiments, the target PRACH resource may be determined based on the first information, the first preset condition, and the path loss corresponding to the first reference signal.

[0239] Exemplarily, when the first information indicates that the priority of the second PRACH resource is higher than the priority of the first PRACH resource, if the path loss corresponding to the first reference signal is less than or equal to the second threshold, and the first PRACH resource and the second PRACH resource exist in the first time window, then the target PRACH resource is the second PRACH resource; if the path loss corresponding to the first reference signal is less than or equal to the second threshold, and the first PRACH resource exists in the first time window and the second PRACH resource does not exist, then the target PRACH resource is the first PRACH resource; if the path loss corresponding to the first reference signal is less than or equal to the second threshold, and the second PRACH resource exists in the first time window and the first PRACH resource does not exist, then the target PRACH resource is the second PRACH resource.

[0240] Exemplarily, when the first information indicates that the priority of the second PRACH resource is higher than the priority of the first PRACH resource, if the path loss corresponding to the first reference signal is greater than or equal to the second threshold, and the first PRACH resource and the second PRACH resource exist in the first time window, then the target PRACH resource is the first PRACH resource; if the path loss corresponding to the first reference signal is greater than or equal to the second threshold, and the first PRACH resource exists in the first time window and the second PRACH resource does not exist, then the target PRACH resource is the first PRACH resource; if the path loss corresponding to the first reference signal is greater than or equal to the second threshold, and the second PRACH resource exists in the first time window and the first PRACH resource does not exist, then the target PRACH resource is the second PRACH resource.

[0241] Exemplarily, when the first information indicates that the terminal device selects the first PRACH resource as the target PRACH resource, if the path loss corresponding to the first reference signal is greater than or equal to the second threshold, and the first PRACH resource and the second PRACH resource exist in the first time window, then the target PRACH resource is the first PRACH resource; if the path loss corresponding to the first reference signal is greater than or equal to the second threshold, and the first PRACH resource exists in the first time window and the second PRACH resource does not exist, then the target PRACH resource is the first PRACH resource; if the path loss corresponding to the first reference signal is greater than or equal to the second threshold, and the second PRACH resource exists in the first time window and the first PRACH resource does not exist, then the target PRACH resource is the second PRACH resource.

[0242] Exemplarily, when the first information indicates that the terminal device selects the first PRACH resource as the target PRACH resource, if the path loss corresponding to the first reference signal is less than or equal to the second threshold, and the first PRACH resource and the second PRACH resource exist in the first time window, then the target PRACH resource is the second PRACH resource; if the path loss corresponding to the first reference signal is less than or equal to the second threshold, and the first PRACH resource exists in the first time window and the second PRACH resource does not exist, then the target PRACH resource is the first PRACH resource; if the path loss corresponding to the first reference signal is less than or equal to the second threshold, and the second PRACH resource exists in the first time window and the first PRACH resource does not exist, then the target PRACH resource is the second PRACH resource.

[0243] In some embodiments, the target PRACH resource may be determined based on the first information, the first preset condition, and the cross-link interference level measured by the terminal device.

[0244] Exemplarily, when the first information indicates that the priority of the second PRACH resource is higher than the priority of the first PRACH resource, if the CLI measured by the terminal device is less than or equal to the third threshold, and the first PRACH resource and the second PRACH resource exist in the first time window, then the target PRACH resource is the second PRACH resource; if the CLI measured by the terminal device is less than or equal to the third threshold, and the first PRACH resource exists in the first time window and the second PRACH resource does not exist, then the target PRACH resource is the first PRACH resource; if the CLI measured by the terminal device is less than or equal to the third threshold, and the second PRACH resource exists in the first time window and the first PRACH resource does not exist, then the target PRACH resource is the second PRACH resource.

[0245] Exemplarily, when the first information indicates that the priority of the second PRACH resource is higher than the priority of the first PRACH resource, if the CLI measured by the terminal device is greater than or equal to the third threshold, and the first PRACH resource and the second PRACH resource exist in the first time window, then the target PRACH resource is the first PRACH resource; if the CLI measured by the terminal device is greater than or equal to the third threshold, and the first PRACH resource exists in the first time window and the second PRACH resource does not exist, then the target PRACH resource is the first PRACH resource; if the CLI measured by the terminal device is greater than or equal to the third threshold, and the second PRACH resource exists in the first time window and the first PRACH resource does not exist, then the target PRACH resource is the second PRACH resource.

[0246] Exemplarily, when the first information indicates that the terminal device selects the first PRACH resource as the target PRACH resource, if the CLI measured by the terminal device is greater than or equal to the third threshold, and the first PRACH resource and the second PRACH resource exist in the first time window, then the target PRACH resource is the first PRACH resource; if the CLI measured by the terminal device is greater than or equal to the third threshold, and the first PRACH resource exists in the first time window and the second PRACH resource does not exist, then the target PRACH resource is the first PRACH resource; if the CLI measured by the terminal device is greater than or equal to the third threshold, and the second PRACH resource exists in the first time window and the first PRACH resource does not exist, then the target PRACH resource is the second PRACH resource.

[0247] Exemplarily, when the first information indicates that the terminal device selects the first PRACH resource as the target PRACH resource, if the CLI measured by the terminal device is less than or equal to the third threshold, and the first PRACH resource and the second PRACH resource exist in the first time window, then the target PRACH resource is the second PRACH resource; if the CLI measured by the terminal device is less than or equal to the third threshold, and the first PRACH resource exists in the first time window and the second PRACH resource does not exist, then the target PRACH resource is the first PRACH resource; if the CLI measured by the terminal device is less than or equal to the third threshold, and the second PRACH resource exists in the first time window and the first PRACH resource does not exist, then the target PRACH resource is the second PRACH resource.

[0248] In some embodiments, the target PRACH resource may be determined based on the first information, the first preset condition, and the frequency domain position of the second PRACH resource.

[0249] Exemplarily, when the first information indicates that the priority of the second PRACH resource is higher than the priority of the first PRACH resource, if the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is greater than or equal to a fourth threshold, and the first PRACH resource and the second PRACH resource exist in the first time window, then the target PRACH resource is the second PRACH resource; if the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is greater than or equal to the fourth threshold, and the first PRACH resource exists in the first time window and the second PRACH resource does not exist, then the target PRACH resource is the first PRACH resource; if the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is greater than or equal to the fourth threshold, and the second PRACH resource exists in the first time window and the first PRACH resource does not exist, then the target PRACH resource is the second PRACH resource.

[0250] Exemplarily, when the first information indicates that the priority of the second PRACH resource is higher than the priority of the first PRACH resource, if the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is less than or equal to a fourth threshold, and the first PRACH resource and the second PRACH resource exist in the first time window, then the target PRACH resource is the first PRACH resource; if the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is less than or equal to the fourth threshold, and the first PRACH resource exists in the first time window and the second PRACH resource does not exist, then the target PRACH resource is the first PRACH resource; if the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is less than or equal to the fourth threshold, and the second PRACH resource exists in the first time window and the first PRACH resource does not exist, then the target PRACH resource is the second PRACH resource.

[0251] Exemplarily, when the first information indicates that the terminal device selects the first PRACH resource as the target PRACH resource, if the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is less than or equal to the fourth threshold, and the first PRACH resource and the second PRACH resource exist in the first time window, then the target PRACH resource is the first PRACH resource; if the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is less than or equal to the fourth threshold, and the first PRACH resource exists in the first time window and the second PRACH resource does not exist, then the target PRACH resource is the first PRACH resource; if the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is less than or equal to the fourth threshold, and the second PRACH resource exists in the first time window and the first PRACH resource does not exist, then the target PRACH resource is the second PRACH resource.

[0252] Exemplarily, when the first information indicates that the terminal device selects the first PRACH resource as the target PRACH resource, if the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is greater than or equal to the fourth threshold, and the first PRACH resource and the second PRACH resource exist in the first time window, then the target PRACH resource is the second PRACH resource; if the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is greater than or equal to the fourth threshold, and the first PRACH resource exists in the first time window and the second PRACH resource does not exist, then the target PRACH resource is the first PRACH resource; if the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is greater than or equal to the fourth threshold, and the second PRACH resource exists in the first time window and the first PRACH resource does not exist, then the target PRACH resource is the second PRACH resource.

[0253] Based on approach #B1, the target PRACH resource is the third PRACH resource or the second PRACH resource. The method for determining the target PRACH resource from the third PRACH resource and the second PRACH resource may be similar to the method for determining the target PRACH resource from the first PRACH resource and the second PRACH resource, or similar to the method for prioritizing the first RACH configuration or the second RACH configuration.

[0254] Exemplarily, the target PRACH resource is specified by the protocol, and the target PRACH resource is the second PRACH resource. That is, the second PRACH resource configured by the second RACH configuration may be preferentially selected as the target PRACH resource.

[0255] Exemplarily, the network device indicates the priority of the third PRACH resource and the second PRACH resource, and the target PRACH resource is the PRACH resource with the highest priority among the third PRACH resource and the second PRACH resource; or, the network device instructs the terminal device to select the third PRACH resource or the second PRACH resource as the target PRACH resource.

[0256] It should be noted that, for other methods of determining the target PRACH resource in the third PRACH resource and the second PRACH resource, reference may be made to the description in the aforementioned embodiment, which will not be described in detail here.

[0257] Through this method, the terminal device can select the target PRACH resource from the third PRACH resource or the second PRACH resource configured by the network device to send PRACH. In this way, the reliability of random access can be guaranteed, the conflict of random access between different terminal devices can be reduced, and the success rate of random access can be improved.

[0258] Based on method #B21, there are several ways to determine the target PRACH resource based on the second information.

[0259] In a possible implementation manner, when the first PRACH resource, the second PRACH resource, and the third PRACH resource are all available, the target PRACH resource may be directly determined based on the second information.

[0260] Exemplarily, when the first PRACH resource, the second PRACH resource and the third PRACH resource are all available, if the second information indicates that the second PRACH resource has the highest priority, the target PRACH resource is the second PRACH resource; if the second information instructs the terminal device to select the first PRACH resource, the target PRACH resource is the first PRACH resource; if the second information instructs the terminal device to select the third PRACH resource, the target PRACH resource is the third PRACH resource.

[0261] Through this method, the network device can directly configure the three PRACH resources as the same dimension priority without distinguishing the types of RACH configurations, thereby making the selection of the target PRACH resource simpler and improving the efficiency of determining the target PRACH resource.

[0262] In another possible implementation, one or more of the first PRACH resource, the second PRACH resource, and the third PRACH resource are available under certain conditions; the terminal device may select a target PRACH resource from the one or more available PRACH resources based on the second information.

[0263] Exemplarily, when the sum of the number of first PRACH resources and the number of second PRACH resources is less than or equal to the fifth threshold, it indicates that the third PRACH resource is available; when the second information indicates that the third PRACH resource has the highest priority, the target PRACH resource can be the third PRACH resource.

[0264] Among them, the fifth threshold can be specified by the protocol or configured by the network device, or can be set in other ways, and the embodiments of the present application are not limited to this.

[0265] Exemplarily, when the received power or energy of the first reference signal is greater than or equal to the first threshold, the second PRACH resource is available; when the second information indicates that the second PRACH resource has the highest priority, the target PRACH resource may be the second PRACH resource.

[0266] Exemplarily, when the path loss corresponding to the first reference signal is less than or equal to the second threshold, the second PRACH resource is available; when the second information indicates that the second PRACH resource has the highest priority, the target PRACH resource can be the second PRACH resource.

[0267] Exemplarily, when the CLI measured by the terminal device is greater than or equal to a third threshold, the first PRACH resource and the third PRACH resource are available; when the second information indicates that the third PRACH resource has the highest priority, the target PRACH resource can be the third PRACH resource.

[0268] Exemplarily, when the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is less than or equal to a fourth threshold, the first PRACH resource and the third PRACH resource are available; when the second information indicates that the first PRACH resource has the highest priority, the target PRACH resource can be the first PRACH resource.

[0269] Exemplarily, when the first PRACH resource and the third PRACH resource exist in the first time window, the first PRACH resource and the third PRACH resource are available; when the second information indicates that the first PRACH resource has the highest priority, the target PRACH resource can be the first PRACH resource.

[0270] Through this method, the network device can directly configure the three PRACH resources as the same dimension priority without distinguishing the types of RACH configurations, thereby making the selection of the target PRACH resource simpler and improving the efficiency of determining the target PRACH resource.

[0271] It should be understood that the target PRACH resource selection method proposed in the above embodiment can be applied to the entire random access process. In other words, the target PRACH resource selection method proposed in the above embodiment is applicable to both the initial transmission and retransmission of random access, thereby simplifying the PRACH power control mechanism and the modification of the Radio Access Network 2 (RAN2) protocol to a certain extent.

[0272] It should also be understood that the target PRACH resource selection method proposed in the above embodiment can also be applied to the initial transmission of PRACH but not to the retransmission of PRACH. The retransmission of PRACH can use the nearest available PRACH resource, thereby reducing the delay and improving the transmission efficiency of PRACH.

[0273] In some embodiments, the first RACH configuration is further used to configure a fourth PRACH resource;

[0274] wherein the fourth PRACH resource is unavailable; and / or,

[0275] The terminal device expects that the fourth PRACH resource is not within the uplink subband; and / or,

[0276] The terminal device does not expect the fourth PRACH resource to be in the uplink subband;

[0277] The uplink subband refers to a continuous uplink frequency domain resource. The uplink subband is located in an SBFD symbol (time slot). The SBFD symbol is a DL symbol and / or Flexible symbol configured with an uplink subband and / or a downlink subband.

[0278] Exemplarily, the fourth PRACH resource is a SBFD PRACH resource.

[0279] It should be noted that the terminal device may not expect the first RACH to be configured with PRACH resources in the uplink subband of the SBFD symbol.

[0280] It should also be noted that, for a network device, the network device may not configure a PRACH resource in the uplink subband of the SBFD symbol; for example, the network device may not configure the fourth PRACH resource in the uplink subband.

[0281] Furthermore, in the case where the network device configures PRACH resources in the uplink subband of the SBFD symbol, the terminal device may consider that the PRACH resources are unavailable.

[0282] Through this method, the fourth PRACH resource cannot be used to send PRACH, thereby reducing the types of PRACH resources that can be used to send PRACH and simplifying the complexity of the terminal device's selection of PRACH resources.

[0283] The following embodiment takes the terminal device being an SBFD-Aware UE as an example, and describes in detail the random access method provided in the embodiment of the present application in combination with a specific application scenario.

[0284] In the following embodiments, the Legacy RACH configuration is equivalent to the non-SBFD related RACH configuration in the aforementioned embodiment, the Additional RACH configuration is equivalent to the SBFD related RACH configuration in the aforementioned embodiment, and the Legacy PRACH resources are equivalent to the non-SBFD PRACH resources in the aforementioned embodiment.

[0285] In the random access method provided in the embodiments of the present application, for SBFD-Aware UEs, in Option 1, it can be assumed that the Legacy PRACH resources configured by the Legacy RACH configuration are available; in Option 2, it can be assumed that both Type 1 and Type 3 PRACH resources are available. In other words, in Option 1, both the SBFD PRACH resources and the Legacy PRACH resources configured by the Legacy RACH configuration are available; in Option 2, all Type 1, Type 3, and Type 4 PRACH resources are available.

[0286] An SBFD-Aware UE can receive Legacy RACH configurations and / or Additional RACH configurations, and can therefore select a target PRACH resource to transmit PRACH based on multiple PRACH resources configured by the Legacy RACH configurations and / or Additional RACH configurations. The following describes how to determine the target PRACH resource in Option 1 and Option 2, in conjunction with Embodiment 1 and Embodiment 2.

[0287] Embodiment 1: A method for determining target PRACH resources in Option 1.

[0288] The SBFD-Aware UE can receive the Legacy RACH configuration and select the target PRACH resource from the Legacy PRACH resources and SBFD PRACH resources configured in the Legacy RACH configuration to send PRACH. The target PRACH resource selection method may include:

[0289] (1) The protocol specifies that the SBFD PRACH resource be selected as the target PRACH resource.

[0290] This method reduces the probability of conflicts between legacy PRACH resources and non-SBFD-Aware UEs, as non-SBFD-Aware UEs cannot transmit PRACH on SBFD PRACH resources. Furthermore, the base station can identify SBFD-Aware UEs by receiving PRACH on SBFD PRACH resources, thereby providing guidance for scheduling subsequent steps in random access.

[0291] (2) Based on the first information configured on the base station side, select the SBFD PRACH resource or the legacy PRACH resource as the target PRACH resource; wherein the first information is used to instruct the SBFD-Aware UE to select the SBFD PRACH resource or the legacy PRACH resource as the target PRACH resource, or the first information is used to indicate the priority of the SBFD PRACH resource and the legacy PRACH resource, and the target PRACH resource is the PRACH resource with the highest priority among the SBFD PRACH resource and the legacy PRACH resource.

[0292] Through this method, the base station can instruct the SBFD-Aware UE to select target PRACH resources based on the different situations of different SBFD-Aware UEs. For example, when the SBFD-Aware UE is located at the center of the cell, the base station can instruct the SBFD-Aware UE to use the SBFD PRACH resources as the target PRACH resources to send PRACH, thereby reducing conflicts on the legacy PRACH resources. When the SBFD-Aware UE is located at the edge of the cell, the base station can instruct the SBFD-Aware UE to use the legacy PRACH resources as the target PRACH resources to send PRACH, thereby avoiding excessive PRACH transmit power of the SBFD PRACH resources and generating excessive CLI for uplink transmission of the uplink subband. In addition, by indicating the target PRACH resources selected by the SBFD-Aware UE by the base station, a load balancing effect can be achieved.

[0293] (3) When the received power (e.g., reference signal received power (RSRP)) or energy of the PRACH-associated RS (i.e., the first reference signal) measured by the SBFD-Aware UE is greater than or equal to a first threshold, the target PRACH resource is an SBFD PRACH resource; and / or, when the received power or energy of the RS is less than or equal to the first threshold, the target PRACH resource is a legacy PRACH resource.

[0294] Through this method, when the received power or energy of the RS is high (such as greater than the first threshold), the SBFD-Aware UE may be located in a relatively central position of the cell. At this time, the power used by the SBFD-Aware UE to send PRACH is also low, so using SBFD PRACH resources to send PRACH will not generate a large CLI; when the received power or energy of the RS is low (such as less than the first threshold), the SBFD-Aware UE may be located in a relatively edge position of the cell. At this time, the power used by the SBFD-Aware UE to send PRACH is also large, so Legacy PRACH resources are used to send PRACH to avoid generating a large CLI.

[0295] (4) When the path loss corresponding to the RS is less than or equal to the second threshold, the target PRACH resource is an SBFD PRACH resource; and / or, when the path loss corresponding to the RS is greater than or equal to the second threshold, the target PRACH resource is a legacy PRACH resource.

[0296] Through this method, when the path loss corresponding to the RS is low (such as less than the second threshold), the SBFD-Aware UE may be located in a relatively central position of the cell. At this time, the power used by the SBFD-Aware UE to send PRACH is also low, so using SBFD PRACH resources to send PRACH will not generate a large CLI; when the path loss corresponding to the RS is high (such as greater than the second threshold), the SBFD-Aware UE may be located in a relatively edge position of the cell. At this time, the power used by the SBFD-Aware UE to send PRACH is also large, so Legacy PRACH resources are used to send PRACH to avoid generating a large CLI.

[0297] (5) When the CLI measured by the SBFD-Aware UE is less than or equal to a third threshold, the target PRACH resource is an SBFD PRACH resource; and / or, when the CLI measured by the SBFD-Aware UE is greater than or equal to the third threshold, the target PRACH resource is a legacy PRACH resource.

[0298] Through this method, when the CLI measured by the SBFD-Aware UE is small (such as less than the third threshold), using the SBFD PRACH resources to send PRACH will not generate a large CLI; when the CLI measured by the SBFD-Aware UE is large (such as greater than the third threshold), using the Legacy PRACH resources to send PRACH to avoid generating a larger CLI.

[0299] (6) When the frequency domain offset between the SBFD PRACH resource and the boundary of the downlink subband is greater than or equal to a fourth threshold, the target PRACH resource is the SBFD PRACH resource; and / or, when the frequency domain offset between the SBFD PRACH resource and the boundary of the downlink subband is less than or equal to the fourth threshold, the target PRACH resource is the legacy PRACH resource.

[0300] The frequency domain offset between the SBFD PRACH resource and the downlink subband boundary includes one or more of the following:

[0301] The frequency domain offset between the starting position of the SBFD PRACH resource and the starting position of the downlink subband;

[0302] The frequency domain offset between the end position of the SBFD PRACH resource and the end position of the downlink subband;

[0303] The frequency domain offset between the starting position of the SBFD PRACH resource and the ending position of the downlink subband;

[0304] The frequency domain offset between the end position of the SBFD PRACH resource and the start position of the downlink subband.

[0305] Through this method, when the frequency domain offset between the SBFD PRACH resource and the boundary of the downlink subband is greater than or equal to the fourth threshold, the CLI generated by the SBFD PRACH resource for the downlink subband is relatively small, and using the SBFD PRACH resource to send PRACH will not generate a large CLI; when the frequency domain offset between the SBFD PRACH resource and the boundary of the downlink subband is less than or equal to the fourth threshold, the CLI generated by the SBFD PRACH resource for the downlink subband is relatively large, and legacy PRACH resources are used to send PRACH to avoid generating a larger CLI.

[0306] (7) Within the first time window after the random access procedure is initiated, when both legacy PRACH resources and SBFD PRACH resources exist, the target PRACH resource is the SBFD PRACH resource; and / or, when both legacy PRACH resources exist and SBFD PRACH resources do not exist, the target PRACH resource is the legacy PRACH resource; and / or, when both SBFD PRACH resources exist and legacy PRACH resources do not exist, the target PRACH resource is the SBFD PRACH resource.

[0307] The length of the first time window is specified by the protocol or configured on the base station side.

[0308] Through this method, based on the introduction of the first time window, the SBFD PRACH resource can be selected as the target PRACH resource within a certain delay range, thereby reducing the conflict with the Legacy PRACH resource and ensuring the delay requirement.

[0309] (8) The above selection methods (2) to (7) can be used in combination.

[0310] Exemplarily, method (2) can be used in combination with methods (3) to (6). The base station side instructs the SBFD-Aware UE to select the target PRACH resource through the first information, and the SBFD-Aware UE can select the target PRACH resource based on the instruction of the base station side and one or more conditions in (3) to (6). For example, the base station side instructs the SBFD-Aware UE to select the SBFD PRACH resource as the target PRACH resource through the first information, and the SBFD-Aware UE can determine whether one or more conditions in (3) to (6) are met. If so, the SBFD PRACH resource is selected; if not, the PRACH resource is selected based on the SBFD-Aware UE implementation, or the Legacy PRACH resource is selected.

[0311] Exemplarily, method (2) can be used in combination with method (7). The base station side instructs the SBFD-Aware UE to select the target PRACH resource through the first information, and the SBFD-Aware UE can select the target PRACH resource based on the instruction of the base station side and the first time window constraint. For example, the base station side instructs the SBFD-Aware UE to select the SBFD PRACH resource as the target PRACH resource through the first information, and the SBFD-Aware UE can determine whether there is an SBFD PRACH resource within the first time window. If so, the SBFD PRACH resource is selected; if not, the Legacy PRACH resource is selected.

[0312] Embodiment 2: Method for determining target PRACH resources in Option 2.

[0313] SBFD-Aware UE can receive Legacy RACH configuration and Additional RACH configuration.

[0314] For SBFD-Aware UE, the SBFD PRACH resources configured by the Legacy RACH configuration are unavailable, that is, the SBFD-Aware UE does not expect the PRACH resources (or RO) configured by the Legacy RACH configuration to be within the uplink subband of the SBFD symbol.

[0315] By using this method, the types (or categories) of PRACH resources (or ROs) are reduced, and the complexity of the SBFD-Aware UE's selection of PRACH resources (or ROs) is simplified.

[0316] SBFD-Aware UE can select the target PRACH resource to transmit PRACH from the Legacy PRACH resources (Type 1 PRACH resources) configured in the Legacy RACH configuration, the SBFD PRACH resources (Type 4 PRACH resources) configured in the Additional RACH configuration, and the Legacy PRACH resources (Type 3 PRACH resources) configured in the Additional RACH configuration (corresponding to three types of PRACH resources). The target PRACH resource selection method may include:

[0317] (a) First, SBFD PRACH resources and Legacy PRACH resources configured in the Additional RACH configuration are selected. Different types of PRACH resources are selected from the SBFD PRACH resources and Legacy PRACH resources configured in the Additional RACH configuration. The method for selecting different types of PRACH resources in the Additional RACH configuration can be referred to the description in Option 1 and is not repeated here.

[0318] (b) The base station side can configure the priorities of the three PRACH resources. The SBFD-Aware UE can select the target PRACH resource to send PRACH based on the availability and priority of the three PRACH resources (for example, the SBFD-Aware UE selects the PRACH resource with the highest priority among the three available PRACH resources).

[0319] This method does not distinguish between RACH configuration types and directly configures the three PRACH resources as the same dimension priority. Using this solution in Option 2 can simplify the selection of target PRACH resources.

[0320] The availability of three types of PRACH resources may include:

[0321] (i) All three PRACH resources are available;

[0322] (ii) The three types of PRACH resources are available under certain conditions. For example, Type 1 PRACH resources are available only when one or more of the conditions (3) to (6) mentioned in Option 1 are met. For another example, Type 3 PRACH resources are available only when the number of Type 1 PRACH resources and the number of Type 4 PRACH resources are both less than or equal to a certain threshold.

[0323] An embodiment of the present application provides a random access method, in which an SBFD-Aware UE can receive a Legacy RACH configuration and / or an Additional RACH configuration, which are used to configure multiple PRACH resources; and transmit a PRACH on a target PRACH resource, where the target PRACH resource is one of the multiple PRACH resources configured by the Legacy RACH configuration and / or the Additional RACH configuration. In this way, the SBFD-Aware UE can select a target PRACH resource from the multiple PRACH resources configured by the base station to transmit the PRACH. This ensures the reliability of random access, reduces conflicts in random access contention between different terminal devices, and improves the success rate of random access.

[0324] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, the technical solution of the present application can be subjected to a variety of simple modifications, and these simple modifications all fall within the scope of protection of the present application. For example, the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present application will no longer describe the various possible combinations separately. For another example, the various different embodiments of the present application can also be arbitrarily combined, as long as they do not violate the idea of ​​the present application, they should also be regarded as the contents disclosed in the present application. For another example, under the premise of no conflict, the various embodiments and / or the technical features in each embodiment described in the present application can be arbitrarily combined with the prior art, and the technical solution obtained after the combination should also fall within the scope of protection of the present application.

[0325] It should also be understood that in the various method embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0326] FIG8 is a schematic diagram of the structure of a random access device 800 provided in an embodiment of the present application, which is applied to a terminal device. As shown in FIG8 , the random access device 800 may include:

[0327] The first receiving unit 810 is configured to receive a first random access channel RACH configuration and / or a second RACH configuration, where the first RACH configuration and / or the second RACH configuration are used to configure multiple physical random access channel PRACH resources;

[0328] The first sending unit 820 is configured to send a PRACH on a target PRACH resource, where the target PRACH resource is one of the multiple PRACH resources configured by the first RACH configuration and / or the second RACH configuration.

[0329] In some embodiments, the first RACH configuration is used to configure a first PRACH resource and a second PRACH resource; and the target PRACH resource is the first PRACH resource or the second PRACH resource.

[0330] In some embodiments, the first RACH configuration is used to configure the third PRACH resource; the second RACH configuration is used to configure the first PRACH resource and / or the second PRACH resource; and the target PRACH resource is one of the multiple PRACH resources configured by the first RACH configuration and the second RACH configuration.

[0331] In some embodiments, the target PRACH resource is specified by a protocol or configured by a network device, and the target PRACH resource is one of one or more PRACH resources configured by the second RACH configuration.

[0332] In some embodiments, the first receiving unit 810 is further configured to receive first information; wherein the first information is used to indicate the priority of the first PRACH resource and the second PRACH resource, and the target PRACH resource is the PRACH resource with the highest priority among the first PRACH resource and the second PRACH resource; or, the first information is used to instruct the terminal device to select the first PRACH resource or the second PRACH resource as the target PRACH resource.

[0333] In some embodiments, the target PRACH resource is determined based on one or more of the following:

[0334] received power or energy of the first reference signal;

[0335] a path loss corresponding to the first reference signal;

[0336] Cross-link interference levels measured by terminal equipment;

[0337] The frequency domain position of the second PRACH resource.

[0338] In some embodiments, when the received power or energy of the first reference signal is greater than or equal to a first threshold, the target PRACH resource is the second PRACH resource; and / or, when the received power or energy of the first reference signal is less than or equal to the first threshold, the target PRACH resource is the first PRACH resource.

[0339] In some embodiments, when the path loss corresponding to the first reference signal is less than or equal to the second threshold, the target PRACH resource is the second PRACH resource; and / or, when the path loss corresponding to the first reference signal is greater than or equal to the second threshold, the target PRACH resource is the first PRACH resource.

[0340] In some embodiments, when the cross-link interference measured by the terminal device is less than or equal to a third threshold, the target PRACH resource is the second PRACH resource; and / or, when the cross-link interference measured by the terminal device is greater than or equal to the third threshold, the target PRACH resource is the first PRACH resource.

[0341] In some embodiments, when the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is greater than or equal to a fourth threshold, the target PRACH resource is the second PRACH resource; and / or, when the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is less than or equal to the fourth threshold, the target PRACH resource is the first PRACH resource; wherein the downlink subband refers to a continuous section of downlink frequency domain resources.

[0342] In some embodiments, the frequency domain offset between the second PRACH resource and the boundary of the downlink subband includes one or more of the following:

[0343] A frequency domain offset between a starting position of the second PRACH resource and a starting position of the downlink subband;

[0344] A frequency domain offset between an end position of the second PRACH resource and an end position of the downlink subband;

[0345] The frequency domain offset between the starting position of the second PRACH resource and the ending position of the downlink subband;

[0346] The frequency domain offset between the end position of the second PRACH resource and the start position of the downlink subband.

[0347] In some embodiments, the target PRACH resource is determined based on a first preset condition; wherein the first preset condition includes: whether the first PRACH resource and / or the second PRACH resource exists within a first time window after the random access process is started.

[0348] In some embodiments, in the presence of a first PRACH resource and a second PRACH resource, the target PRACH resource is the second PRACH resource; and / or, in the presence of a first PRACH resource and no second PRACH resource, the target PRACH resource is the first PRACH resource; and / or, in the presence of a second PRACH resource and no first PRACH resource, the target PRACH resource is the second PRACH resource.

[0349] In some embodiments, the first receiving unit 810 is further configured to receive first information, and the target PRACH resource is determined based on the first information and one or more of the following:

[0350] received power or energy of the first reference signal;

[0351] a path loss corresponding to the first reference signal;

[0352] Cross-link interference levels measured by terminal equipment;

[0353] The frequency domain position of the second PRACH resource;

[0354] The first information is used to indicate the priority of the first PRACH resource and the second PRACH resource; or, the first information is used to instruct the terminal device to select the first PRACH resource or the second PRACH resource as the target PRACH resource.

[0355] In some embodiments, the first receiving unit 810 is further configured to receive first information, and the target PRACH resource is determined based on the first information and a first preset condition;

[0356] The first information is used to indicate the priority of the first PRACH resource and the second PRACH resource; or, the first information is used to instruct the terminal device to select the first PRACH resource or the second PRACH resource as the target PRACH resource;

[0357] The first preset condition includes: whether there is a first PRACH resource and / or a second PRACH resource within a first time window after the random access process is started.

[0358] In some embodiments, the target PRACH resource is determined based on a first preset condition and one or more of the following:

[0359] received power or energy of the first reference signal;

[0360] a path loss corresponding to the first reference signal;

[0361] Cross-link interference levels measured by terminal equipment;

[0362] The frequency domain position of the second PRACH resource;

[0363] The first preset condition includes: whether there is a first PRACH resource and / or a second PRACH resource within a first time window after the random access process is started.

[0364] In some embodiments, the target PRACH resource is specified by a protocol, and the target PRACH resource is a second PRACH resource.

[0365] In some embodiments, the first receiving unit 810 is further configured to receive second information; wherein the second information is used to indicate the priority of the first PRACH resource, the second PRACH resource, and the third PRACH resource, and the target PRACH resource is the PRACH resource with the highest priority among the first PRACH resource, the second PRACH resource, and the third PRACH resource; or,

[0366] The second information is used to instruct the terminal device to select one of the first PRACH resource, the second PRACH resource and the third PRACH resource as the target PRACH resource.

[0367] In some embodiments, the first RACH configuration is further used to configure a fourth PRACH resource;

[0368] wherein the fourth PRACH resource is unavailable; and / or,

[0369] The terminal device expects that the fourth PRACH resource is not within the uplink subband; and / or,

[0370] The terminal device does not expect the fourth PRACH resource to be within the uplink subband; wherein the uplink subband refers to a continuous uplink frequency domain resource.

[0371] In some embodiments, the first RACH configuration is a non-subband full-duplex (SBFD)-related RACH configuration, and the second RACH configuration is a SBFD-related RACH configuration.

[0372] An embodiment of the present application provides a random access apparatus that can receive a first RACH configuration and / or a second RACH configuration, where the first RACH configuration and / or the second RACH configuration are used to configure multiple PRACH resources; and transmit a PRACH on a target PRACH resource, where the target PRACH resource is one of the multiple PRACH resources configured by the first RACH configuration and / or the second RACH configuration. In this way, the apparatus can select a target PRACH resource from the multiple PRACH resources configured by a network device to transmit the PRACH. This ensures the reliability of random access, reduces random access contention conflicts between different terminal devices, and improves the success rate of random access.

[0373] Those skilled in the art should understand that the relevant description of the above-mentioned random access device in the embodiment of the present application can be understood with reference to the relevant description of the random access method in the embodiment of the present application.

[0374] FIG9 is a schematic diagram of the structure of a random access device 900 provided in an embodiment of the present application, which is applied to a network device. As shown in FIG9 , the random access device 900 may include:

[0375] The second sending unit 910 is configured to send a first random access channel RACH configuration and / or a second RACH configuration, where the first RACH configuration and / or the second RACH configuration are used to configure multiple physical random access channel PRACH resources;

[0376] The second receiving unit 920 is configured to receive a PRACH on a target PRACH resource, where the target PRACH resource is one of the multiple PRACH resources configured by the first RACH configuration and / or the second RACH configuration.

[0377] In some embodiments, the first RACH configuration is used to configure a first PRACH resource and a second PRACH resource; and the target PRACH resource is the first PRACH resource or the second PRACH resource.

[0378] In some embodiments, the first RACH configuration is used to configure the third PRACH resource; the second RACH configuration is used to configure the first PRACH resource and / or the second PRACH resource; and the target PRACH resource is one of the multiple PRACH resources configured by the first RACH configuration and the second RACH configuration.

[0379] In some embodiments, the target PRACH resource is specified by a protocol or configured by a network device, and the target PRACH resource is one of one or more PRACH resources configured by the second RACH configuration.

[0380] In some embodiments, the second sending unit 910 is further configured to send first information; wherein the first information is used to indicate the priority of the first PRACH resource and the second PRACH resource, and the target PRACH resource is the PRACH resource with the highest priority among the first PRACH resource and the second PRACH resource; or, the first information is used to instruct the terminal device to select the first PRACH resource or the second PRACH resource as the target PRACH resource.

[0381] In some embodiments, the target PRACH resource is determined based on one or more of the following:

[0382] received power or energy of the first reference signal;

[0383] a path loss corresponding to the first reference signal;

[0384] Cross-link interference levels measured by terminal equipment;

[0385] The frequency domain position of the second PRACH resource.

[0386] In some embodiments, when the received power or energy of the first reference signal is greater than or equal to a first threshold, the target PRACH resource is the second PRACH resource; and / or, when the received power or energy of the first reference signal is less than or equal to the first threshold, the target PRACH resource is the first PRACH resource.

[0387] In some embodiments, when the path loss corresponding to the first reference signal is less than or equal to the second threshold, the target PRACH resource is the second PRACH resource; and / or, when the path loss corresponding to the first reference signal is greater than or equal to the second threshold, the target PRACH resource is the first PRACH resource.

[0388] In some embodiments, when the cross-link interference measured by the terminal device is less than or equal to a third threshold, the target PRACH resource is the second PRACH resource; and / or, when the cross-link interference measured by the terminal device is greater than or equal to the third threshold, the target PRACH resource is the first PRACH resource.

[0389] In some embodiments, when the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is greater than or equal to a fourth threshold, the target PRACH resource is the second PRACH resource; and / or, when the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is less than or equal to the fourth threshold, the target PRACH resource is the first PRACH resource; wherein the downlink subband refers to a continuous section of downlink frequency domain resources.

[0390] In some embodiments, the frequency domain offset between the second PRACH resource and the boundary of the downlink subband includes one or more of the following:

[0391] A frequency domain offset between a starting position of the second PRACH resource and a starting position of the downlink subband;

[0392] A frequency domain offset between an end position of the second PRACH resource and an end position of the downlink subband;

[0393] The frequency domain offset between the starting position of the second PRACH resource and the ending position of the downlink subband;

[0394] The frequency domain offset between the end position of the second PRACH resource and the start position of the downlink subband.

[0395] In some embodiments, the target PRACH resource is determined based on a first preset condition; wherein the first preset condition includes: whether the first PRACH resource and / or the second PRACH resource exists within a first time window after the random access process is started.

[0396] In some embodiments, in the presence of a first PRACH resource and a second PRACH resource, the target PRACH resource is the second PRACH resource; and / or, in the presence of a first PRACH resource and no second PRACH resource, the target PRACH resource is the first PRACH resource; and / or, in the presence of a second PRACH resource and no first PRACH resource, the target PRACH resource is the second PRACH resource.

[0397] In some embodiments, the second sending unit 910 is further configured to send first information, where the target PRACH resource is determined based on the first information and one or more of the following:

[0398] received power or energy of the first reference signal;

[0399] a path loss corresponding to the first reference signal;

[0400] Cross-link interference levels measured by terminal equipment;

[0401] The frequency domain position of the second PRACH resource;

[0402] The first information is used to indicate the priority of the first PRACH resource and the second PRACH resource; or, the first information is used to instruct the terminal device to select the first PRACH resource or the second PRACH resource as the target PRACH resource.

[0403] In some embodiments, the second sending unit 910 is further configured to send first information, and the target PRACH resource is determined based on the first information and a first preset condition;

[0404] The first information is used to indicate the priority of the first PRACH resource and the second PRACH resource; or, the first information is used to instruct the terminal device to select the first PRACH resource or the second PRACH resource as the target PRACH resource;

[0405] The first preset condition includes: whether there is a first PRACH resource and / or a second PRACH resource within a first time window after the random access process is started.

[0406] In some embodiments, the target PRACH resource is determined based on a first preset condition and one or more of the following:

[0407] received power or energy of the first reference signal;

[0408] a path loss corresponding to the first reference signal;

[0409] Cross-link interference levels measured by terminal equipment;

[0410] The frequency domain position of the second PRACH resource;

[0411] The first preset condition includes: whether there is a first PRACH resource and / or a second PRACH resource within a first time window after the random access process is started.

[0412] In some embodiments, the target PRACH resource is specified by a protocol, and the target PRACH resource is a second PRACH resource.

[0413] In some embodiments, the second sending unit 910 is further configured to send second information; wherein the second information is used to indicate the priority of the first PRACH resource, the second PRACH resource, and the third PRACH resource, and the target PRACH resource is the PRACH resource with the highest priority among the first PRACH resource, the second PRACH resource, and the third PRACH resource; or,

[0414] The second information is used to instruct the terminal device to select one of the first PRACH resource, the second PRACH resource and the third PRACH resource as the target PRACH resource.

[0415] In some embodiments, the first RACH configuration is further used to configure a fourth PRACH resource; wherein the fourth PRACH resource is unavailable; and / or the fourth PRACH resource is not within an uplink subband; wherein an uplink subband refers to a continuous uplink frequency domain resource.

[0416] In some embodiments, the first RACH configuration is a non-subband full-duplex (SBFD)-related RACH configuration, and the second RACH configuration is a SBFD-related RACH configuration.

[0417] An embodiment of the present application provides a random access apparatus that can send a first RACH configuration and / or a second RACH configuration, where the first RACH configuration and / or the second RACH configuration are used to configure multiple PRACH resources; and receive a PRACH on a target PRACH resource, where the target PRACH resource is one of the multiple PRACH resources configured by the first RACH configuration and / or the second RACH configuration. In this way, the apparatus can configure multiple PRACH resources for a terminal device, thereby enabling the terminal device to select a target PRACH resource from the multiple PRACH resources to send the PRACH, thereby ensuring the reliability of random access, reducing conflicts in random access contention between different terminal devices, and improving the success rate of random access.

[0418] Those skilled in the art should understand that the relevant description of the above-mentioned random access device in the embodiment of the present application can be understood with reference to the relevant description of the random access method in the embodiment of the present application.

[0419] FIG10 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. The communication device 1000 may be a terminal device or a network device. The communication device 1000 shown in FIG10 may include a processor 1010, a memory 1020, and a transceiver 1030, wherein:

[0420] Memory 1020, for storing computer programs;

[0421] The processor 1010 is connected to the memory 1020 and is configured to call and execute a computer program from the memory 1020 to implement the method in the embodiment of the present application;

[0422] The transceiver 1030 is also called a communication interface, and is used to send and receive information when sending and receiving information with other external devices.

[0423] In some embodiments, the memory 1020 may be a separate device independent of the processor 1010 , or may be integrated into the processor 1010 .

[0424] In some embodiments, the transceiver 1030 may include an input interface, wherein the processor 1010 may control the input interface to communicate with other external devices, specifically, to receive information or data sent by other external devices.

[0425] In some embodiments, the transceiver 1030 may include an output interface, wherein the processor 1010 may control the output interface to communicate with other external devices, specifically, to send information or data to other external devices.

[0426] In some embodiments, the transceiver 1030 may include a transmitter and a receiver. The transceiver 1030 may further include an antenna, which may be one or more.

[0427] In some embodiments, the communication device 1000 can be applied to the network device of the embodiment of the present application, and the communication device 1000 can implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0428] In some embodiments, the communication device 1000 can be applied to the terminal device of the embodiment of the present application, and the communication device 1000 can implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0429] Figure 11 is a schematic structural diagram of a chip provided in an embodiment of the present application. The chip 1100 shown in Figure 11 includes a processor 1110, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0430] In some embodiments, as shown in FIG11 , the chip 1100 may further include a memory 1120. The processor 1110 may call and execute a computer program from the memory 1120 to implement the method in the embodiment of the present application.

[0431] The memory 1120 may be a separate device independent of the processor 1110 , or may be integrated into the processor 1110 .

[0432] In some embodiments, the chip 1100 may further include an input interface 1130. The processor 1110 may control the input interface 1130 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0433] In some embodiments, the chip 1100 may further include an output interface 1140. The processor 1110 may control the output interface 1140 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0434] In some embodiments, the chip can be applied to the terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0435] In some embodiments, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, it is not described here. It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system, or a system-on-chip chip, etc.

[0436] FIG12 is a schematic block diagram of a communication system provided in an embodiment of the present application. As shown in FIG12 , the communication system 1200 includes a terminal device 1210 and a network device 1220 .

[0437] Among them, the terminal device 1210 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1220 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they will not be repeated here.

[0438] It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by hardware integrated logic circuits in the processor or software instructions. The above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly implemented as a hardware decoding processor, or can be implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0439] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0440] An embodiment of the present application further provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by at least one processor, the method in the embodiment of the present application is implemented.

[0441] In some embodiments, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0442] In some embodiments, the computer-readable storage medium can be applied to the terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0443] An embodiment of the present application also provides a computer program product, which includes a computer storage medium, the computer storage medium storing a computer program, and the computer program including instructions that can be executed by at least one processor. When the instructions are executed by at least one processor, the method in the embodiment of the present application is implemented.

[0444] In some embodiments, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0445] In some embodiments, the computer program product can be applied to the terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0446] The embodiments of the present application also provide a computer program, which enables a computer to execute the method in the embodiments of the present application.

[0447] In some embodiments, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0448] In some embodiments, the computer program can be applied to the terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0449] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0450] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0451] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0452] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0453] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0454] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

[0455] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A random access method, applied to a terminal device, comprising: receiving a first random access channel (RACH) configuration and / or a second RACH configuration, where the first RACH configuration and / or the second RACH configuration are used to configure multiple physical random access channel (PRACH) resources; A PRACH is sent on a target PRACH resource, where the target PRACH resource is one of the multiple PRACH resources configured by the first RACH configuration and / or the second RACH configuration.

2. The method according to claim 1, wherein The first RACH configuration is used to configure a first PRACH resource and a second PRACH resource; The target PRACH resource is the first PRACH resource or the second PRACH resource.

3. The method according to claim 1, wherein The first RACH configuration is used to configure a third PRACH resource; The second RACH configuration is used to configure the first PRACH resource and / or the second PRACH resource; The target PRACH resource is one of multiple PRACH resources configured by the first RACH configuration and the second RACH configuration.

4. The method according to claim 3, wherein: The target PRACH resource is specified by a protocol or configured by a network device, and the target PRACH resource is one of one or more PRACH resources configured by the second RACH configuration.

5. The method according to claim 2 or 4, wherein: Also includes: receiving a first message; The first information is used to indicate the priority of the first PRACH resource and the second PRACH resource, and the target PRACH resource is the PRACH resource with the highest priority between the first PRACH resource and the second PRACH resource; or, The first information is used to instruct the terminal device to select the first PRACH resource or the second PRACH resource as the target PRACH resource.

6. The method according to claim 2, 4 or 5, wherein: The target PRACH resource is determined based on one or more of the following: received power or energy of the first reference signal; a path loss corresponding to the first reference signal; a cross-link interference level measured by the terminal device; The frequency domain position of the second PRACH resource.

7. The method according to claim 6, wherein: In a case where the received power or energy of the first reference signal is greater than or equal to a first threshold, the target PRACH resource is the second PRACH resource; and / or, In a case where the received power or energy of the first reference signal is less than or equal to the first threshold, the target PRACH resource is the first PRACH resource.

8. The method according to claim 6 or 7, wherein: When the path loss corresponding to the first reference signal is less than or equal to a second threshold, the target PRACH resource is the second PRACH resource; and / or, When the path loss corresponding to the first reference signal is greater than or equal to the second threshold, the target PRACH resource is the first PRACH resource.

9. The method according to any one of claims 6 to 8, wherein In a case where the cross-link interference measured by the terminal device is less than or equal to a third threshold, the target PRACH resource is the second PRACH resource; and / or, In a case where the cross-link interference measured by the terminal device is greater than or equal to the third threshold, the target PRACH resource is the first PRACH resource.

10. The method according to any one of claims 6 to 9, wherein In a case where the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is greater than or equal to a fourth threshold, the target PRACH resource is the second PRACH resource; and / or, The frequency domain offset between the second PRACH resource and the boundary of the downlink subband is less than or equal to the fourth threshold. In this case, the target PRACH resource is the first PRACH resource; wherein the downlink subband refers to a continuous downlink frequency domain resource.

11. The method according to claim 10, wherein: The frequency domain offset between the second PRACH resource and the boundary of the downlink subband includes one or more of the following: a frequency domain offset between a starting position of the second PRACH resource and a starting position of the downlink subband; a frequency domain offset between an end position of the second PRACH resource and an end position of the downlink subband; a frequency domain offset between a starting position of the second PRACH resource and an ending position of the downlink subband; A frequency domain offset between an end position of the second PRACH resource and a start position of the downlink subband.

12. The method according to any one of claims 2, 4 to 11, wherein The target PRACH resource is determined based on a first preset condition; The first preset condition includes: whether the first PRACH resource and / or the second PRACH resource exists within a first time window after the random access process is started.

13. The method according to claim 12, wherein: In a case where the first PRACH resource and the second PRACH resource exist, the target PRACH resource is the second PRACH resource; and / or, In a case where the first PRACH resource exists and the second PRACH resource does not exist, the target PRACH resource is the first PRACH resource; and / or, In a case where the second PRACH resource exists and the first PRACH resource does not exist, the target PRACH resource is the second PRACH resource.

14. The method according to any one of claims 2, 4 to 13, wherein Also includes: receiving first information, wherein the target PRACH resource is determined based on the first information and one or more of the following: received power or energy of the first reference signal; a path loss corresponding to the first reference signal; a cross-link interference level measured by the terminal device; a frequency domain position of the second PRACH resource; The first information is used to indicate the priority of the first PRACH resource and the second PRACH resource; or, the first information is used to instruct the terminal device to select the first PRACH resource or the second PRACH resource as the target PRACH resource.

15. The method according to any one of claims 2, 4 to 14, wherein Also includes: receiving first information, wherein the target PRACH resource is determined based on the first information and a first preset condition; The first information is used to indicate the priority of the first PRACH resource and the second PRACH resource; or, the first information is used to instruct the terminal device to select the first PRACH resource or the second PRACH resource as the target PRACH resource; The first preset condition includes: whether the first PRACH resource and / or the second PRACH resource exists within a first time window after the random access process is started.

16. The method according to any one of claims 2, 4 to 15, wherein The target PRACH resource is determined based on a first preset condition and one or more of the following: received power or energy of the first reference signal; a path loss corresponding to the first reference signal; a cross-link interference level measured by the terminal device; a frequency domain position of the second PRACH resource; The first preset condition includes: whether the first PRACH resource and / or the second PRACH resource exists within a first time window after the random access process is started.

17. The method according to claim 2 or 4, wherein: The target PRACH resource is specified by a protocol, and the target PRACH resource is the second PRACH resource.

18. The method according to claim 3, wherein receiving second information; The second information is used to indicate the priorities of the first PRACH resource, the second PRACH resource, and the third PRACH resource, and the target PRACH resource is the PRACH resource with the highest priority among the first PRACH resource, the second PRACH resource, and the third PRACH resource; or, The second information is used to instruct the terminal device to select one of the first PRACH resource, the second PRACH resource and the third PRACH resource as the target PRACH resource.

19. The method according to any one of claims 3 to 18, wherein The first RACH configuration is further used to configure a fourth PRACH resource; The fourth PRACH resource is unavailable; and / or The terminal device expects that the fourth PRACH resource is not within the uplink subband; and / or, The terminal device does not expect the fourth PRACH resource to be within the uplink sub-band; wherein the uplink sub-band refers to a continuous uplink frequency domain resource.

20. The method according to any one of claims 1 to 19, wherein The first RACH configuration is a non-subband full-duplex (SBFD)-related RACH configuration, and the second RACH configuration is a SBFD-related RACH configuration.

21. A random access method, applied to a network device, comprising: Sending a first random access channel RACH configuration and / or a second RACH configuration, where the first RACH configuration and / or the second RACH configuration are used to configure multiple physical random access channel PRACH resources; A PRACH is received on a target PRACH resource, where the target PRACH resource is one of the multiple PRACH resources configured by the first RACH configuration and / or the second RACH configuration.

22. The method according to claim 21, wherein The first RACH configuration is used to configure a first PRACH resource and a second PRACH resource; The target PRACH resource is the first PRACH resource or the second PRACH resource.

23. The method according to claim 21, wherein The first RACH configuration is used to configure a third PRACH resource; The second RACH configuration is used to configure the first PRACH resource and / or the second PRACH resource; The target PRACH resource is one of multiple PRACH resources configured by the first RACH configuration and the second RACH configuration.

24. The method according to claim 23, wherein The target PRACH resource is specified by a protocol or configured by a network device, and the target PRACH resource is one of one or more PRACH resources configured by the second RACH configuration.

25. The method according to claim 22 or 24, wherein Also includes: Sending the first message; The first information is used to indicate the priority of the first PRACH resource and the second PRACH resource, and the target PRACH resource is the PRACH resource with the highest priority between the first PRACH resource and the second PRACH resource; or, The first information is used to instruct the terminal device to select the first PRACH resource or the second PRACH resource as the target PRACH resource.

26. The method of claim 22, 24 or 25, wherein: The target PRACH resource is determined based on one or more of the following: received power or energy of the first reference signal; a path loss corresponding to the first reference signal; a cross-link interference level measured by the terminal device; The frequency domain position of the second PRACH resource.

27. The method according to claim 26, wherein In a case where the received power or energy of the first reference signal is greater than or equal to a first threshold, the target PRACH resource is the second PRACH resource; and / or, In a case where the received power or energy of the first reference signal is less than or equal to the first threshold, the target PRACH resource is the first PRACH resource.

28. The method according to claim 26 or 27, wherein When the path loss corresponding to the first reference signal is less than or equal to a second threshold, the target PRACH resource is the second PRACH resource; and / or, When the path loss corresponding to the first reference signal is greater than or equal to the second threshold, the target PRACH resource is the first PRACH resource.

29. The method according to any one of claims 26 to 28, wherein In a case where the cross-link interference measured by the terminal device is less than or equal to a third threshold, the target PRACH resource is the second PRACH resource; and / or, In a case where the cross-link interference measured by the terminal device is greater than or equal to the third threshold, the target PRACH resource is the first PRACH resource.

30. The method according to any one of claims 26 to 29, wherein In a case where the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is greater than or equal to a fourth threshold, the target PRACH resource is the second PRACH resource; and / or, When the frequency domain offset between the second PRACH resource and the boundary of the downlink subband is less than or equal to the fourth threshold, the target PRACH resource is the first PRACH resource; wherein the downlink subband refers to a continuous downlink frequency domain resource.

31. The method according to claim 30, wherein The frequency domain offset between the second PRACH resource and the boundary of the downlink subband includes one or more of the following: a frequency domain offset between a starting position of the second PRACH resource and a starting position of the downlink subband; a frequency domain offset between an end position of the second PRACH resource and an end position of the downlink subband; a frequency domain offset between a starting position of the second PRACH resource and an ending position of the downlink subband; A frequency domain offset between an end position of the second PRACH resource and a start position of the downlink subband.

32. The method according to any one of claims 22, 24 to 31, wherein The target PRACH resource is determined based on a first preset condition; The first preset condition includes: whether the first PRACH resource and / or the second PRACH resource exists within a first time window after the random access process is started.

33. The method according to claim 32, wherein In a case where the first PRACH resource and the second PRACH resource exist, the target PRACH resource is the second PRACH resource; and / or, In a case where the first PRACH resource exists and the second PRACH resource does not exist, the target PRACH resource is the first PRACH resource; and / or, In a case where the second PRACH resource exists and the first PRACH resource does not exist, the target PRACH resource is the second PRACH resource.

34. The method according to any one of claims 22, 24 to 33, wherein Also includes: sending first information, where the target PRACH resource is determined based on the first information and one or more of the following: received power or energy of the first reference signal; a path loss corresponding to the first reference signal; a cross-link interference level measured by the terminal device; a frequency domain position of the second PRACH resource; The first information is used to indicate the priority of the first PRACH resource and the second PRACH resource; or, the first information is used to instruct the terminal device to select the first PRACH resource or the second PRACH resource as the target PRACH resource.

35. The method according to any one of claims 22, 24 to 34, wherein Also includes: Sending first information, where the target PRACH resource is determined based on the first information and a first preset condition; The first information is used to indicate the priority of the first PRACH resource and the second PRACH resource; or, the first information is used to instruct the terminal device to select the first PRACH resource or the second PRACH resource as the target PRACH resource; The first preset condition includes: whether the first PRACH resource and / or the second PRACH resource exists within a first time window after the random access process is started.

36. The method according to any one of claims 22, 24 to 35, wherein The target PRACH resource is determined based on a first preset condition and one or more of the following: received power or energy of the first reference signal; a path loss corresponding to the first reference signal; a cross-link interference level measured by the terminal device; a frequency domain position of the second PRACH resource; The first preset condition includes: whether the first PRACH resource and / or the second PRACH resource exists within a first time window after the random access process is started.

37. The method according to claim 22 or 24, wherein The target PRACH resource is specified by a protocol, and the target PRACH resource is the second PRACH resource.

38. The method of claim 23, wherein: sending a second message; The second information is used to indicate the priorities of the first PRACH resource, the second PRACH resource, and the third PRACH resource, and the target PRACH resource is the PRACH resource with the highest priority among the first PRACH resource, the second PRACH resource, and the third PRACH resource; or, The second information is used to instruct the terminal device to select one of the first PRACH resource, the second PRACH resource and the third PRACH resource as the target PRACH resource.

39. The method according to any one of claims 23 to 38, wherein The first RACH configuration is further used to configure a fourth PRACH resource; The fourth PRACH resource is unavailable; and / or The fourth PRACH resource is not within the uplink subband; The uplink subband refers to a continuous uplink frequency domain resource.

40. The method according to any one of claims 21 to 39, wherein The first RACH configuration is a non-subband full-duplex (SBFD)-related RACH configuration, and the second RACH configuration is a SBFD-related RACH configuration.

41. A random access device, applied to a terminal device, comprising: A first receiving unit is configured to receive a first random access channel RACH configuration and / or a second RACH configuration, where the first RACH configuration and / or the second RACH configuration are used to configure multiple physical random access channel PRACH resources; The first sending unit is configured to send a PRACH on a target PRACH resource, where the target PRACH resource is one of the multiple PRACH resources configured by the first RACH configuration and / or the second RACH configuration.

42. A random access device, applied to a network device, comprising: A second sending unit is configured to send a first random access channel RACH configuration and / or a second RACH configuration, where the first RACH configuration and / or the second RACH configuration are used to configure multiple physical random access channel PRACH resources; The second receiving unit is configured to receive a PRACH on a target PRACH resource, where the target PRACH resource is one of the multiple PRACH resources configured by the first RACH configuration and / or the second RACH configuration.

43. A communication device, comprising: memory for storing computer programs; a processor, connected to the memory, configured to call and execute the computer program from the memory to implement the method according to any one of claims 1 to 20, or to implement the method according to any one of claims 21 to 40; A transceiver is used to send and receive information when sending and receiving information with other external devices.

44. A chip, comprising: memory for storing computer programs; A processor, connected to the memory, configured to call and execute a computer program from the memory, so that a device equipped with the chip performs the method according to any one of claims 1 to 20, or performs the method according to any one of claims 21 to 40; A transceiver is used to send and receive information between a device or chip.

45. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by at least one processor, implements the method according to any one of claims 1 to 20, or implements the method according to any one of claims 21 to 40.

46. ​​A computer program product comprising a computer program or instructions, which, when executed by a processor, implement the steps of the method according to any one of claims 1 to 20; or implement the steps of the method according to any one of claims 21 to 40.

47. A computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1 to 20, or to implement the method according to any one of claims 21 to 40.

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