Method for determining prach resource, terminal and network side device

Abstract

The application discloses a PRACH resource determination method, a terminal and a network side device, and belongs to the technical field of communication. The PRACH resource determination method of the embodiment of the application comprises the following steps: a terminal determines a physical random access channel (PRACH) resource used for first transmission according to downlink signaling configuration or a protocol predefinition rule; wherein the first transmission comprises at least one of the following characteristics: a 4-step random access procedure, a 2-step random access procedure, a message 3 (Msg3) repeated transmission random access procedure, a random access based small data transmission (SDT), a random access procedure of a first type terminal; wherein the PRACH resource comprises at least one of the following: a random access occasion (RO) and a pilot sequence (preamble).

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of communication, and particularly relates to a PRACH resource determination method, a terminal and a network side device. BACKGROUND

[0002] The New Radio (NR) Rel-15 / 16 system requires a Rel-15 / 16 terminal to support a 100MHz receiving bandwidth and 4 receiving antennas in a FR1 frequency range, and to support a 200MHz receiving bandwidth and 2 receiving antennas in a FR2 frequency range. Such capability requirements put higher requirements on the complexity, power consumption and cost of the terminal. For some special services (such as wearable devices and video monitoring), the terminal requirements of the Rel-15 / 16 system are too high for special service terminals. The Rel-17 system defines a new type of terminal for special service terminals, which is called a Reduced Capability (RedCap) terminal. The RedCap terminal only needs to support a 20MHz / 100MHz receiving bandwidth and 1 / 2 receiving antennas, thereby reducing the cost and power consumption of the terminal. The RedCap terminal follows the four-step random access and two-step random access procedures defined by the Rel-15 / 16 system, and requires reporting the RedCap terminal capability in the random access procedure to assist the terminal in subsequent procedure scheduling. The Rel-17 system uses a dedicated uplink initial part bandwidth (Bandwidth Part, BWP) and a dedicated physical random access channel (Physical Random Access Channel, PRACH) resource to realize the RedCap terminal capability reporting.

[0003] In Rel-15 / 16 systems, the transmission of message 3 (Msg3) in the random access procedure is specified as a single transmission. Since the terminal can only transmit according to the synchronization signal block (SSB) beam in the initial access stage, but the SSB beam is a cell-level beam, the SSB beam gain is smaller than the user-level beam gain. This leads to the coverage performance of the Msg3 physical uplink shared channel (PUSCH) being relatively poor compared to other channels, affecting the success rate of random access. Especially for cell edge users or users in coverage hole areas, the performance bottleneck of Msg3 PUSCH will seriously affect the success rate of these users accessing the cell. The Rel-17 NR system supports the Msg3 PUSCH repetition transmission mode to improve the success rate of random access of these users. The random access procedure supporting Msg3 PUSCH repetition transmission needs to follow the sending rules of message 1 (Msg1) of the 4-step random access (4-step RACH) procedure to minimize the impact on Msg1; at the same time, by configuring dedicated Msg1 resources, the base station is provided with the need for Msg3 PUSCH repetition transmission.

[0004] In addition, the Rel-16 NR system defines a 2-step random access (2-step RACH) procedure, and the corresponding message A (MsgA) PRACH configuration scheme; other features of small data transmission (SDT) being discussed in the Rel-17 NR system also need to occupy a part of PRACH to implement the request of SDT. Therefore, when the limited PRACH resources are allocated to each feature (4-step random access procedure, 2-step random access procedure, SDT, MsgA PUSCH repetition request, RedCap terminal), the PRACH resource configuration scheme needs to be designed to ensure the fair and efficient allocation and utilization of PRACH resources. SUMMARY

[0005] Embodiments of the present application provide a PRACH resource determination method, a terminal and a network side device, which can solve the problem of allocating limited PRACH resources to each feature.

[0006] In a first aspect, a PRACH resource determination method is provided, which includes:

[0007] The terminal determines a physical random access channel (PRACH) resource for a first transmission according to downlink signaling configuration or a protocol predefined rule.

[0008] The first transmission includes at least one of the following characteristics:

[0009] A 4-step random access procedure;

[0010] A 2-step random access procedure;

[0011] A random access procedure of message 3 (Msg3) repetition transmission;

[0012] Small data transmission (SDT) based on random access;

[0013] A random access procedure of a first type terminal;

[0014] The PRACH resource includes at least one of the following:

[0015] A random access occasion (RO);

[0016] A pilot sequence (preamble).

[0017] In a second aspect, a method for determining a PRACH resource is provided, and the method includes:

[0018] A network device sends downlink signaling to a terminal, and the downlink signaling is used by the terminal to determine a physical random access channel (PRACH) resource for a first transmission;

[0019] The first transmission includes at least one of the following characteristics:

[0020] A 4-step random access procedure;

[0021] A 2-step random access procedure;

[0022] A random access procedure of message 3 (Msg3) repetition transmission;

[0023] Small data transmission (SDT) based on random access;

[0024] A random access procedure of a first type terminal;

[0025] The PRACH resource includes at least one of the following:

[0026] A random access occasion (RO);

[0027] A pilot sequence (preamble).

[0028] In a third aspect, a device for determining a PRACH resource is provided, and the device includes:

[0029] determining unit, configured to determine, according to downlink signaling configuration or a protocol predefined rule, a physical random access channel (PRACH) resource used for first transmission;

[0030] wherein the first transmission comprises at least one of the following characteristics:

[0031] a 4-step random access procedure;

[0032] a 2-step random access procedure;

[0033] a random access procedure with message 3 (Msg3) repetition transmission;

[0034] a random access based small data transmission (SDT);

[0035] a random access procedure for a first type of terminal;

[0036] wherein the PRACH resource comprises at least one of the following:

[0037] a random access occasion (RO);

[0038] a preamble.

[0039] In a fourth aspect, a PRACH resource determining apparatus is provided, and the apparatus comprises:

[0040] a sending unit, configured to send, to a terminal, downlink signaling used by the terminal to determine a PRACH resource used for first transmission;

[0041] wherein the first transmission comprises at least one of the following characteristics:

[0042] a 4-step random access procedure;

[0043] a 2-step random access procedure;

[0044] a random access procedure with Msg3 repetition transmission;

[0045] a random access based SDT;

[0046] a random access procedure for a first type of terminal;

[0047] wherein the PRACH resource comprises at least one of the following:

[0048] a RO;

[0049] a preamble.

[0050] In a fifth aspect, a terminal is provided, which comprises a processor, a memory, and a program or instructions stored in the memory and executable on the processor, and the program or instructions, when executed by the processor, implement the steps of the method for determining PRACH resource according to the first aspect.

[0051] In a sixth aspect, a terminal is provided, which comprises a processor and a communication interface, wherein the processor is configured to determine, according to downlink signaling configuration or a protocol predefined rule, a physical random access channel (PRACH) resource for a first transmission, and the first transmission comprises at least one of the following characteristics: a 4-step random access procedure, a 2-step random access procedure, a random access procedure with message 3 (Msg3) repetition transmission, a small data transmission (SDT) based on random access, a random access procedure for a first type terminal, and the PRACH resource comprises at least one of the following: a random access occasion (RO) and a preamble.

[0052] In a seventh aspect, a network side device is provided, which comprises a processor, a memory, and a program or instructions stored in the memory and executable on the processor, and the program or instructions, when executed by the processor, implement the steps of the method for determining PRACH resource according to the second aspect.

[0053] In an eighth aspect, a network side device is provided, which comprises a processor and a communication interface, wherein the communication interface is configured to send, to a terminal, downlink signaling for the terminal to determine a physical random access channel (PRACH) resource for a first transmission, and the first transmission comprises at least one of the following characteristics: a 4-step random access procedure, a 2-step random access procedure, a random access procedure with message 3 (Msg3) repetition transmission, a small data transmission (SDT) based on random access, a random access procedure for a first type terminal, and the PRACH resource comprises at least one of the following: a random access occasion (RO) and a preamble.

[0054] In a ninth aspect, a readable storage medium is provided, which stores a program or instructions, and the program or instructions, when executed by a processor, implement the steps of the method for determining PRACH resource according to the first aspect, or implement the steps of the method for determining PRACH resource according to the second aspect.

[0055] In a tenth aspect, a chip is provided, which comprises a processor and a communication interface, and the communication interface is coupled to the processor, and the processor is configured to run a program or instructions to implement the method for determining PRACH resource according to the first aspect, or implement the method for determining PRACH resource according to the second aspect.

[0056] In a 11th aspect, a computer program / program product is provided, which is stored in a non-transitory storage medium, and the program / program product is executed by at least one processor to implement the steps of the PRACH resource determination method according to the first aspect, or to implement the steps of the PRACH resource determination method according to the second aspect.

[0057] In the embodiments of the present application, the PRACH resource used to implement the new feature is determined according to the downlink signaling configuration or the protocol predefined rule, the division of the PRACH resource is implemented, the PRACH resources of different functions can share the PRACH resource, the PRACH resource fragmentation can be avoided, the fair and efficient allocation and utilization of the PRACH resource is ensured, and the resource utilization efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0058] Figure 1 A structure diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0059] Figure 2 One of the flowcharts of the PRACH resource determination method provided by the embodiments of the present application;

[0060] Figure 3 The flowchart of determining the PRACH resource used for the first transmission provided by the embodiments of the present application;

[0061] Figure 4 The determination rule diagram of the available RO when the RO is mapped to multiple SSBs provided by the embodiments of the present application;

[0062] Figure 5 The diagram of the minimum mask when the RedCap uplink initial BWP overlaps with the existing uplink initial BWP provided by the embodiments of the present application;

[0063] Figure 6 The preamble division example diagram when the 4-step random access flow and the 2-step random access flow share the RO provided by the embodiments of the present application;

[0064] Figure 7 The preamble division example diagram when the 2-step RACH independently configures the RO provided by the embodiments of the present application;

[0065] Figure 8 The second flowchart of the PRACH resource determination method provided by the embodiments of the present application;

[0066] Figure 9 The structure diagram of the PRACH resource determination apparatus provided by the embodiments of the present application;

[0067] Figure 10 Structure diagram of a PRACH resource determination device provided by an embodiment of the present application;

[0068] Figure 11 Structure diagram of a communication device provided by an embodiment of the present application;

[0069] Figure 12 Hardware structure diagram of a terminal for implementing an embodiment of the present application;

[0070] Figure 13 Structure diagram of a network device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0071] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0072] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second" are generally of a kind, and are not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the front and rear associated objects are in an "or" relationship.

[0073] It is worth noting that the technology described in the embodiments of the present application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these technologies can also be applied outside the NR system application, such as in a 6th Generation (6G) communication system. th

[0074] Figure 1 ​A structure diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network side device 12. The terminal 11 can also be referred to as a terminal device or a user terminal or a user equipment (UE). The terminal 11 can be a terminal side device such as a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a palm computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, a vehicle-mounted device (VUE), a pedestrian terminal (PUE), a smart home (a home device with a wireless communication function such as a refrigerator, a television, a washing machine, or furniture, etc.), and the like. The wearable device includes a smart watch, a smart bracelet, a smart earphone, smart glasses, smart jewelry (a smart bracelet, a smart necklace, a smart ring, a smart necklace, a smart anklet, a smart necklace, etc.), a smart wristband, smart clothing, a game machine, and the like. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network side device 12 can be a base station or a core network. The base station can be referred to as a node B, an evolved node B, an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access point, a WiFi node, a transmitting receiving point (TRP), or some other appropriate terminology in the art, as long as the same technical effect is achieved. The base station is not limited to a specific technical term, and it should be noted that only a base station in an NR system is taken as an example in the embodiments of the present application, but the specific type of the base station is not limited.

[0075] New features being studied in Rel-17, e.g., Msg3 repetition, early reporting of RedCap terminal capability, small data transmission SDT, need to configure corresponding Msg1 transmission resources in random access procedure for each new feature to implement the new feature. Rel-17 system needs to determine resource subsets in the existing random access occasion (RO) and preamble set to support the above multiple new features on the basis of the configuration of 4-step RACH RO and 2-step RACH RO defined in NR Rel-15 / 16.

[0076] The PRACH resource determination method provided by the embodiments of the present application will be described in detail below in combination with the accompanying drawings and some embodiments and application scenarios thereof.

[0077] Figure 2 One of the flowcharts of the PRACH resource determination method provided by the embodiments of the present application is shown in FIG. 1, which comprises the following steps: Figure 2

[0078] Step 200: The terminal determines the physical random access channel (PRACH) resource used for the first transmission according to the downlink signaling configuration or the protocol pre-defined rule.

[0079] The first transmission comprises at least one of the following features:

[0080] 4-step random access procedure (4-step RACH);

[0081] 2-step random access procedure (2-step RACH);

[0082] Random access procedure of message 3 (Msg3) repetition;

[0083] Small data transmission (SDT) based on random access;

[0084] Random access procedure of the first type terminal.

[0085] Optionally, the features contained in the first transmission are new features of Rel-17, e.g., Msg3 repetition, early reporting of RedCap terminal capability, small data packet transmission SDT, which need to configure corresponding Msg1 transmission resources in the random access procedure for each new feature to implement the new feature. Rel-17 system needs to determine resource subsets in the RO and preamble set defined in NR Rel-15 / 16 to support the above multiple new features on the basis of the configuration of 4-step RACH RO and 2-step RACH RO defined in NR Rel-15 / 16.

[0086] ​It should be noted that the terminal in the embodiments of the present application is a new feature terminal, that is, a terminal supporting the above new features, which can be a first type terminal, or a coverage enhancement terminal, or a small data transmission terminal.

[0087] The conventional / ordinary terminal specifically refers to a terminal defined in NR Rel-15 / 16.

[0088] Optionally, the first type terminal is a RedCap terminal. The RedCap terminal needs to be distinguished from the terminal defined in NR Rel-15 / 16, and the distinction is achieved by using Msg1 time-frequency resource configuration or preamble configuration. The RedCap terminal can be configured with an independent uplink initial part bandwidth (Bandwidth Part, BWP) or downlink initial BWP, or share the initial BWP of the ordinary terminal. When the RedCap terminal shares the initial BWP with the ordinary terminal, the RO resource of the ordinary terminal can be shared. The RedCap terminal can also support Msg3 repeated transmission, 2-step RACH, SDT and other features, so for the RedCap terminal, more resource division needs to be performed on the basis of the RACH resource configuration of the RedCap terminal.

[0089] Optionally, the first transmission is a transmission for implementing a new feature, which can be a random access process of a terminal supporting a new feature.

[0090] The PRACH resource includes at least one of the following:

[0091] A random access occasion (RO);

[0092] A pilot sequence (preamble).

[0093] Optionally, the downlink signaling includes at least one of the following: a system message, high-layer signaling, or a combination of a system message and physical layer signaling.

[0094] Optionally, the high-layer signaling includes at least one of the following: a radio resource control (RRC) message and a media access control control element (MAC CE) signaling.

[0095] In the embodiments of the present application, the terminal determines the physical random access channel (PRACH) resource for the new feature according to the downlink signaling configuration or the protocol predefined rule, which achieves the division of the PRACH resource, avoids PRACH resource fragmentation, ensures the fair and efficient allocation and utilization of the PRACH resource, and improves the resource utilization efficiency.

[0096] Optionally, the first type of terminal supports at least one of the following features:

[0097] Supporting a bandwidth lower than a preset threshold;

[0098] Supporting a number of receive antennas lower than a preset number;

[0099] The preset threshold is a working bandwidth defined in NR Rel-15 / 16, and the preset number is a number of receive antennas defined in NR Rel-15 / 16.

[0100] Figure 3 A flowchart for determining a physical random access channel (PRACH) resource for a first transmission is provided in the embodiments of the present application.

[0101] Optionally, as shown in Figure 3 The determining of the PRACH resource for the first transmission includes at least one of the following:

[0102] Step 300: determining an RO resource in an initial uplink bandwidth BWP;

[0103] Step 301: determining an available RO resource corresponding to the first transmission in the RO resource in the initial uplink BWP;

[0104] Step 302: determining a preamble set associated with the first transmission in the available RO resource.

[0105] Optionally, when a RedCap or Msg3 repetition or a Msg1 of an SDT feature adopts a shared 4-step RO or a 2-step RO, the network device explicitly configures an available RO for the above features through a system message, and then the terminal can determine the available RO according to the system message. Alternatively, the terminal determines the available RO according to a protocol pre-defined implicit rule.

[0106] In the embodiments of the present application, the terminal determining the PRACH resource for the first transmission includes first determining an RO resource in an initial uplink bandwidth BWP, then determining an available RO resource in the RO resource, and further determining a preamble set in the available RO resource, thereby achieving the division of the PRACH resource. PRACHs with different functions can share the PRACH resource, which can avoid PRACH resource fragmentation and improve resource utilization efficiency.

[0107] In addition, after sending the Msg1 or the MsgA, the terminal needs to receive downlink information, and needs to determine a reception rule of a downlink signal, for example, a dedicated radio network temporary identity (RNTI) or a control resource set (CORESET) / search space (SS).

[0108] Optionally, on the basis of each of the above embodiments, after the PRACH resource used for the first transmission is determined, the method further includes:

[0109] The terminal sends a message 1 (Msg1) using the PRACH resource, and calculates a radio network temporary identity (RNTI).

[0110] In the embodiments of the present application, after the PRACH resource used for the first transmission is determined, the terminal sends the Msg1 using the PRACH resource, and calculates the RNTI, which can facilitate the terminal to receive the downlink information and avoid the Msg2 of the new feature terminal from being confused with the Msg2 of the traditional / ordinary terminal.

[0111] Optionally, before the step 300 determines the RO resource in the uplink initial bandwidth part (BWP), the method further includes:

[0112] The uplink initial BWP is determined according to a system message or a protocol predefined rule.

[0113] The uplink initial BWP is a dedicated uplink initial BWP or multiplexes a first uplink initial BWP.

[0114] The first uplink initial BWP is an uplink initial BWP defined in NR Rel-15 / 16.

[0115] It can be understood that the new feature terminal determines a dedicated uplink initial BWP according to a system message or a protocol predefined rule, or multiplexes a first uplink initial BWP.

[0116] In the embodiments of the present application, the first uplink initial BWP is an uplink initial BWP defined in the existing NR Rel-15 / 16 protocol.

[0117] Optionally, the dedicated uplink initial BWP can overlap in a frequency domain with the first uplink initial BWP or be part of the first uplink initial BWP.

[0118] Optionally, the new feature terminal determines the RO resource in the uplink initial BWP according to a system message configuration, or multiplexes the RO resource in the first uplink initial BWP.

[0119] Optionally, the determining the RO resource in the uplink initial part bandwidth BWP comprises:

[0120] In a case where the uplink initial BWP multiplexes a first uplink initial BWP, the terminal multiplexes the RO resource in the first uplink initial BWP and a first configuration parameter corresponding to the RO resource in the first uplink initial BWP; or,

[0121] In a case where the uplink initial BWP is a dedicated uplink initial BWP and the dedicated uplink initial BWP and the first uplink initial BWP exist frequency domain overlap, the terminal takes the RO resource of the first uplink initial BWP in the frequency domain overlap region as the RO resource of the dedicated uplink initial BWP, and multiplexes the configuration result of the RO resource of the first uplink initial BWP; or,

[0122] In a case where the uplink initial BWP is a dedicated uplink initial BWP, the terminal determines the RO resource in the dedicated uplink initial BWP according to the system message configuration, calculates a second configuration parameter of the RO resource in the dedicated uplink initial BWP according to a first configuration parameter of the RO resource in the first uplink initial BWP, and ensures that the SSB associated with the RO of the first uplink initial BWP and the SSB associated with the RO of the dedicated uplink initial BWP are the same on the same time resource.

[0123] The RO resource in the first uplink initial BWP comprises at least one of the following: RO resource of a 4-step random access procedure, RO resource of a 2-step random access procedure.

[0124] The first configuration parameter or the second configuration parameter comprises a mapping relationship between a synchronization signal block (SSB) and the RO.

[0125] Optionally, in a case where the uplink initial BWP of the new feature terminal multiplexes a first uplink initial BWP, the new feature terminal multiplexes the RO resource in the existing uplink initial BWP, which comprises at least one of the following: RO of a 4-step RACH and RO resource of a 2-step RACH (if an independent 2-step RO is configured), and related configuration parameters of the RO resource in the existing uplink initial BWP, for example, comprising a mapping relationship between an SSB and the RO.

[0126] In particular, optionally, for a RedCap terminal, whether the RedCap terminal can perform the 2-step RACH procedure of the RedCap terminal can be determined according to whether a configuration parameter of the system message contains a configuration parameter of a 2-step RACH RO or whether the system supports / permits the 2-step random access procedure of a normal terminal; whether the RedCap terminal can perform Msg3 repetition transmission can be determined according to whether a configuration parameter of the system message contains a configuration parameter of Msg3 repetition transmission; and whether the RedCap terminal can perform SDT can be determined according to whether a configuration parameter of the system message contains a configuration parameter of SDT.

[0127] Optionally, in a case where the uplink initial BWP of the new feature terminal is a dedicated uplink initial BWP and the dedicated uplink initial BWP overlaps with the first uplink initial BWP in the frequency domain, the new feature terminal takes the RO resource of the first uplink initial BWP in the frequency domain overlap region as the RO resource of the dedicated uplink initial BWP, and multiplexes the configuration result of the RO resource of the first uplink initial BWP, for example, multiplexes the mapping relationship between the SSB and the RO determined in the first uplink initial BWP.

[0128] Optionally, in a case where the uplink initial BWP is a dedicated uplink initial BWP, the terminal determines the RO resource in the dedicated uplink initial BWP according to the system message configuration, and calculates the second configuration parameter of the RO resource in the dedicated uplink initial BWP according to the first configuration parameter of the RO resource of the first uplink initial BWP.

[0129] Alternatively, the RO resource in the dedicated uplink initial BWP is determined according to the explicit configuration of the system message.

[0130] Optionally, the RO resource in the dedicated uplink initial BWP multiplexes the time domain resource configuration of the existing uplink initial BWP.

[0131] Optionally, the second configuration parameter of the RO resource of the dedicated uplink initial BWP is determined based on a protocol definition criterion.

[0132] Optionally, the second configuration parameter of the RO resource of the dedicated uplink initial BWP is determined based on a protocol definition criterion.

[0133] Optionally, the first configuration parameter or the second configuration parameter includes a mapping relationship between a synchronization signal block (SSB) and an RO.

[0134] The SSB mapping relationship of the dedicated RO is calculated according to the RO and SSB mapping relationship of the first uplink initial BWP, so as to ensure that the ROs in different BWPs in one time resource contain the same SSB index, that is, the RO and SSB mapping relationship of the dedicated uplink initial BWP is calculated according to the RO and SSB mapping relationship of the existing uplink initial BWP.

[0135] For example, the RO msg1-FDM (Frequency Division Multiplexing) frequency domain multiplexing parameter of the existing uplink initial BWP is equal to the RO msg1-FDM frequency domain multiplexing parameter of the dedicated uplink initial BWP, so the RO and SSB mapping relationship (N) in the above two BWPs is the same; for another example, the RO msg1-FDM frequency domain multiplexing parameter of the existing uplink initial BWP is equal to 8 and the RO and SSB mapping relationship is N, and the RO msg1-FDM frequency domain multiplexing parameter of the dedicated uplink initial BWP is equal to 4, so the RO and SSB mapping relationship of the dedicated uplink initial BWP is N' = N*msg1-FDM (BWP1) / msg1-FDM (BWP2), BWP1 is the first uplink initial BWP, and BWP2 is the dedicated uplink initial BWP.

[0136] Further optionally, for a RedCap terminal, if independent 2-step RO and 4-step RO are configured, the RedCap terminal multiplexes the existing 2-step RO as the 2-step RO of the RedCap terminal and multiplexes the existing 4-step RO as the 4-step RO of the RedCap terminal.

[0137] Optionally, the step 301 determines the available RO resource corresponding to the first transmission in the RO resource in the uplink initial BWP, including:

[0138] The terminal acquires a third configuration parameter in the system message, and determines the available RO resource corresponding to the first transmission from the RO resource in the uplink initial BWP according to the third configuration parameter; or

[0139] In the case that the third configuration parameter is not in the system message, the RO resource in the uplink initial BWP is determined as the available RO resource corresponding to the first transmission.

[0140] Optionally, the new feature terminal determines the available RO resource corresponding to the first transmission from the RO resource in the uplink initial BWP according to the explicit configuration parameter in the system message. The explicit configuration parameter is the third configuration parameter.

[0141] The third configuration parameter is used to indicate the available RO resource.

[0142] Optionally, if there is no third configuration parameter in the system message, the new feature terminal takes the RO resource in the uplink initial BWP as the available RO resource corresponding to the first transmission.

[0143] Optionally, the new feature terminal determines the available RO resource corresponding to the first transmission from the RO resource in the uplink initial BWP according to a protocol predefined rule.

[0144] Optionally, the third configuration parameter is a first mask, and the interpretation manner of the first mask is determined according to the mapping relationship between the RO and the SSB.

[0145] Optionally, in the case that one SSB is associated with multiple ROs in one mapping period, the interpretation manner of the first mask includes one of the following:

[0146] Interpretation according to a first mask table;

[0147] Interpretation according to a bit map form;

[0148] Interpretation according to a special mask table;

[0149] The first mask table is a mask table defined in NR Rel-15 / 16.

[0150] The special mask table multiplexes part of the code words of the mask table defined in NR Rel-15 / 16, and the remaining code words in the mask table are configured by the system message. The code words configured by the system message indicate the starting number of the available RO and the number of the continuous available RO or the last available RO number.

[0151] Optionally, if one SSB is associated with 1 / N ROs (N<1) in one mapping period, the available RO can be determined according to the first mask.

[0152] Optionally, the first mask is interpreted by multiplexing a first mask table, wherein the first mask table is also called an existing Mask table, i.e., a mask table defined in NR Rel-15 / 16.

[0153] Optionally, the first mask is interpreted by a special mask table. The special mask table multiplexes part of the code words of the mask table defined in NR Rel-15 / 16, and the remaining code words in the mask table are configured by the system message. For example, the existing Mask table is extended to add new masks based on the existing Mask table, as shown in Table 1, 0-10 are masks defined in the existing protocol, and 11-14 are new masks (the new masks are an example, and the masks defined in the future may be different), to obtain a special mask table.

[0154] Table 1 Example of dedicated mask table after adding configuration entries on existing mask table

[0155]

[0156] Optionally, the first mask is interpreted in the form of a bit map.

[0157] Optionally, the interpretation method of the mask field (PRACH Mask), which is the first mask, is determined according to the association configuration (ssb-perRACH-OccasionAndCB-PreamblesPerSSB) of SSB and RO in the system message. For example, when an SSB is associated with 8 ROs, the mask table defined in the existing protocol NR Rel-15 / 16 is interpreted, that is, the first mask table is interpreted; when an SSB is associated with 4 ROs, the bit map method is interpreted; when an SSB is associated with 2 ROs, the mask indication information has only 2 bits of valid information, and the 2-bit bit map is interpreted; further, it can be defined that 1 represents that the corresponding RO is a valid RO, and 0 represents that the corresponding RO is an invalid RO. Here, the valid RO is the available RO.

[0158] Optionally, the available RO resource is determined by the newly defined mask information contained in the system message. For example, the newly defined mask is placed in entries 11-15 of the mask table. One possible mask indication method is a bit map, or indicates the starting number of available ROs and the number of consecutive available ROs or the label of the last available RO.

[0159] It can be understood that, according to the starting number of available ROs and the number of consecutive available ROs, or according to the starting number of available ROs and the label of the last available RO, the available RO resource can also be determined.

[0160] Optionally, in the case where one RO maps at least one SSB in one mapping period, the first mask is used to indicate whether the RO associated with the same SSB in multiple consecutive mapping periods is an available RO.

[0161] Optionally, if one RO maps N SSBs (N >= 1) in one mapping period, the first mask is used to indicate whether the RO associated with the same SSB in multiple consecutive mapping periods is an available RO. Figure 4 A determination rule diagram of available ROs in the case of an RO mapping multiple SSBs provided by an embodiment of the present application is shown in FIG. 1. Figure 4As shown, the frequency domain multiplexing FDM defining the RO is 4, the association relationship between the RO and the SSB is 1, and the total number of SSBs is 4, that is, 4 ROs on one time resource can complete the RO-SSB mapping once. Assuming that the field of the first mask is 4 bits, according to the bitmap representation (for example, Mask = 0010) corresponding to the RO of the SSB contained in the mapping period of the continuous 4 SSBs to ROs, it is determined whether the above-mentioned 4 ROs can be used as available ROs of the new feature. Further, it can be defined that 1 represents that the corresponding RO is a valid RO, and 0 represents that the corresponding RO is an invalid RO. Alternatively, the effective range of the first mask does not exceed the PRACH association period, and the starting position of the first mask is the same as the starting boundary of the PRACH association period.

[0162] That is, the effective range of the first mask does not exceed the system-defined PRACH association period (the association period starts from radio frame 0, and the maximum period is 160 ms), and the starting position of the first mask is the same as the starting boundary of the PRACH association period.

[0163] Alternatively, different SSB indexes are configured with different first masks. Alternatively, different new feature terminals are respectively configured with different first masks.

[0164] Alternatively, the third configuration parameter further includes: a second mask; and the second mask is used to indicate that part of the RO resources in the available RO resources are used for the random access process of the first type terminal.

[0165] Alternatively, the second mask is configured on the basis of the configuration of the first mask, the first RO set is indicated by the first mask to be used for the first feature, and part of the ROs in the first RO set are indicated by the second mask to be used for the second feature.

[0166] Here, the first feature can be a RedCap terminal, the second feature can be a 4-step random access procedure of a RedCap terminal, a 2-step random access procedure of a RedCap terminal, a random access procedure of Msg3 repetition of a RedCap terminal, and a random access procedure of SDT of a RedCap terminal.

[0167] Alternatively, the random access process of the first type terminal includes at least one of:

[0168] a message 3 (Msg3) repetition transmission random access procedure of the first type terminal;

[0169] a small data transmission (SDT) based on random access of the first type terminal;

[0170] a 4-step random access procedure of the first type terminal;

[0171] The 2-step random access procedure of the first type terminal.

[0172] Optionally, the plurality of first masks correspond to a plurality of different Msg3 repetition numbers or different coverage levels. One of the first masks corresponds to one of the Msg3 repetition numbers or coverage levels. Illustratively, a Msg3 repetition terminal determines the coverage level of the terminal according to the measurement result (e.g., SSB-RSRP) of the signal quality of the downlink signal (e.g., SSB), for example, if the measurement result is higher than a first threshold, a first configuration of the first mask is used to determine the available RO, if the measurement result is lower than the first threshold and higher than a second threshold, a second configuration of the first mask is used to determine the available RO, and so on. The first threshold, the second threshold, and the like are configured by the system message or predefined by the protocol.

[0173] Optionally, the third configuration parameter is a PRACH period and an offset corresponding to the available RO.

[0174] The third configuration parameter is a PRACH period and an offset corresponding to the available RO.

[0175] According to the PRACH period and the offset corresponding to the available RO, the RO in the PRACH period is determined as the available RO resource.

[0176] For example, the available RO is configured in the granularity of the PRACH period, the PRACH period (an integer multiple of the existing PRACH period) and the offset relative to a certain reference point (the reference point is defined by the protocol, for example, the first PRACH starting from the 0th wireless frame) corresponding to the valid RO are configured by the system message, the RO in the PRACH period determined by the configuration parameter is the available RO of the new feature, and the mapping relationship between the SSB and the available RO remains the mapping result between the SSB and the existing RO.

[0177] Optionally, the step 301 determines the available RO resource corresponding to the first transmission in the RO resource in the uplink initial BWP, including:

[0178] According to the reference signal receiving power (RSRP) of the downlink signal, the coverage level of the terminal is determined.

[0179] According to the mask corresponding to the coverage level, the available RO resource corresponding to the first transmission is determined.

[0180] The correspondence between the coverage level and the mask is predefined by the system message or the protocol.

[0181] Optionally, the network device configures different coverage levels through different masks. For example, the base station configures the PRACH RO of the RedCap terminal or coverage enhancement terminal (for example, the configuration of the 4-step RO of the normal terminal is the same, and one SSB corresponds to 4 SSBs), the base station configures multiple masks corresponding to different coverage levels of the RedCap terminal or coverage enhancement terminal (the coverage level is associated with the RSRP based on the downlink signal measurement), mask0 represents coverage level 0, mask1 represents coverage level 1, and so on, wherein the coverage level is defined by the protocol or configured by the system message. Then the RedCap terminal or coverage enhancement terminal determines the coverage level according to the reference signal receiving power RSRP of the downlink signal; and determines the available RO resource corresponding to the first transmission according to the mask corresponding to the coverage level.

[0182] Optionally, in the case where the uplink initial BWP is a dedicated uplink initial BWP and the dedicated uplink initial BWP exists frequency domain overlap with the first uplink initial BWP and multiplexes the RO resource of the first uplink initial BWP, the step 301 determines the available RO resource corresponding to the first transmission in the RO resource in the uplink initial BWP, including:

[0183] determining the available RO resource of the dedicated uplink initial BWP according to the frequency relative offset relationship between the first uplink initial BWP and the dedicated uplink initial BWP and the available RO set corresponding to the RO resource of the first uplink initial BWP; or,

[0184] taking the intersection of the association result of the RO of the first uplink initial BWP and the SSB and the RO in the dedicated uplink initial BWP, determining the mask corresponding to each SSB, taking the intersection of all SSB masks as the mask of the dedicated uplink initial BWP, and applying the mask of the dedicated uplink initial BWP on the RO associated with all SSBs to determine the available RO.

[0185] It can be understood that in the case where the uplink initial BWP is a dedicated uplink initial BWP and the dedicated uplink initial BWP exists frequency domain overlap with the first uplink initial BWP and multiplexes the RO resource of the first uplink initial BWP, a way of determining the available RO resource is: determining the available RO resource of the dedicated uplink initial BWP according to the frequency relative offset relationship between the first uplink initial BWP and the dedicated uplink initial BWP and the available RO set corresponding to the RO resource of the first uplink initial BWP.

[0186] Another way to determine the available RO resources is to determine the ROs in the overlapping area. The association result of the ROs of the first uplink initial BWP and the SSBs is intersected with the ROs in the range of the dedicated uplink initial BWP to determine the mask corresponding to each SSB (as shown in Figure 5 Mask (SSB0) ∩ Mask (SSB1) ∩ … as the mask of the dedicated uplink initial BWP, and the available ROs are determined by applying this mask to the ROs associated with all SSBs (the specific mask mapping method can be sequential mapping or reverse mapping, which is determined according to the protocol definition). Figure 5 The figure shows the minimum mask in the case where the RedCap uplink initial BWP overlaps with the existing uplink initial BWP.

[0187] Optionally, the RO resources determined to be available ROs in the dedicated uplink initial BWP cannot be used for transmission of other signals (PUCCH, PUSCH, SRS) of the new features.

[0188] In the embodiment of the present application, the terminal determines the physical random access channel PRACH resource used for the first transmission according to the system message or the protocol pre-defined rule, realizes the division of the PRACH resource, guarantees that PRACHs with different functions can share the PRACH resource, can avoid PRACH resource fragmentation, and improves the resource utilization efficiency.

[0189] Optionally, the step 302 determines the preamble set associated with the first transmission in the available RO resource, including:

[0190] The number of preambles of the contention-based random access of each feature indicated in the system message and the preamble division order of each feature pre-defined by the protocol are used to determine the number of preambles of the contention-based random access of each feature supported by the available RO resource, to obtain the preamble set associated with the first transmission.

[0191] In the prior art, the PRACH resource configuration of the 4-step RACH is provided in the system message SIB1. The configuration parameters include the format of the preamble of the PRACH, the time-frequency resource location of the RO, the mapping relationship between the RO and the SSB, etc.

[0192] Among them, msg1-FDM in RACH-ConfigGeneric takes values of 1, 2, 4, 8, indicating that there are several different frequency resource ROs in one time domain location.

[0193] Wherein, totalNumberOfRA-Preambles in RACH-ConfigCommon represents the total number of preambles in one RO (contention based and contention free 4-step and 2-step RACH preambles, but does not include preambles for other purposes such as preamble for system message request), the value is 1~63, if this parameter is default, then 64 preambles are used for RACH.

[0194] The parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB represents the mapping relationship between SSB and RO and the number of contention-based (CB) preambles, one RO is associated with N SSBs, N < 1 represents that one SSB is associated with 1 / N continuous ROs, N ≥ 1 represents that one RO is associated with N SSBs, the value of N is 1 / 8, 1 / 4, 1 / 2, 1, 2, 4, 8, 16. The above parameter configures the number of CB 4-step RA preambles of SSB in RO at the same time. The preambles not configured as CB 4-step RA or 2-step RA are used as contention-free (CF) RA preambles.

[0195] The RO of 2-step RACH has two configuration forms, independently configured 2-step RACH RO and shared 4-step RACH RO. The configuration method of independently configured 2-step RACH RO is similar to that of 4-step RACH RO, which will not be described again.

[0196] In the case of 4-step RACH and 2-step RACH sharing RO, msgA-CB-PreamblesPerSSB-PerSharedRO in RACH-ConfigCommonTwoStepRA configures the number of CB 2-step RACH preambles corresponding to one SSB, one RO is associated with N SSBs (N is the same as the configuration of 4-step RACH RO), containing Preambles. For SSB n, the division rule of preambles is: according to preamble number, continuous to The preambles are associated with SSB n. Among them, the first R preambles are 4-step RACH CBRA, the next Q preambles are 2-step RACH CBRA, and the last preambles are contention free random access (CFRA).

[0197] In the embodiments of the present application, the number of preambles of the new features indicated in the system message is determined according to the number of preambles of the features (4-step RACH, 2-step RACH, RedCap, Msg3 repetition, SDT, RedCap+2-step if needed, RedCap+Msg3 repetition, RedCap+SDT) supported by the network to configure the set of preambles of the new features.

[0198] Optionally, the respective features supported by the available RO resources are determined according to the mask or protocol predefined rule of the respective features.

[0199] Optionally, the features supported in the available RO according to the mask of the respective features are determined. The CBRA preamble of the respective features is determined according to the preamble division order of the respective features defined by the protocol. For example, the mapping order can be as shown in Figure 6 Figure 6 The preamble division example diagram in the configuration case of sharing RO for 4-step random access process and 2-step random access process), SSB#i has N_preamble (SSB#i) preambles in one RO, which are divided into P 4-step RACH CB, Q 2-step RACH CB, R Msg3 repetition CB preamble, S RedCap CB, T SDT CB, and contention free preamble in turn, wherein the values of P, Q, R, S, and T are configured by the system message.

[0200] ​Optionally, the contention-based preamble of the RedCap feature includes RedCap 4-step RACH, RedCap 2-step RACH, RedCap Msg3 repetition, RedCap SDT, and the corresponding preamble quantity is S1, S2, S3, S4, respectively, S1+S2+S3+S4=S, which is configured by the system message. Alternatively, the system message uses a mask or a protocol-defined rule to determine the corresponding sub-features of the RedCap available RO. For example, the Red Cap sub-features corresponding to the RedCap available RO are determined according to the mask. The Red Cap sub-features include at least one of the following: RedCap 4-step RACH, RedCap 2-step RACH, RedCap Msg3 repetition transmission, and SDT.

[0201] Optionally, when the RO of the 2-step RACH is an independently configured RO, the RO of the new feature is respectively mapped to the RO of the 4-step RACH and the RO of the 2-step RACH according to the protocol-defined rule or the system message configuration. For example, the functions mapped on the 4-step RACH RO are 4-step RACH, Msg3 repetition, and RedCap 4-step RACH; the functions mapped on the 2-step RACH RO are 2-step RACH, RedCap 2-step RACH, SDT, and RedCap SDT. Figure 7 The preamble division example diagram provided by the embodiment of the present application in the case of independently configuring the RO of the 2-step RACH.

[0202] Optionally, the calculation of the radio network temporary identifier RNTI includes:

[0203] The radio network temporary identifier RNTI is calculated according to the identifier id of the uplink initial BWP; or,

[0204] The radio network temporary identifier RNTI is calculated according to the RO frequency multiplexing parameter of the terminal and the identifier id of the uplink initial BWP; or,

[0205] The radio network temporary identifier RNTI is calculated according to the total number of the uplink initial BWP.

[0206] When the new feature terminal is configured with independent RO or independent uplink initial BWP, in order to avoid the RA-RNTI or MSGB-RNTI of the new feature terminal from being conflicted with the RA-RNTI or MSGB-RNTI of the traditional / ordinary terminal, a CORESET or SS or RNTI independent of and different from that of the traditional / ordinary terminal can be configured for the new feature terminal to avoid confusion of whether the Msg2 is sent to the ordinary terminal or the new feature terminal by the base station. However, additional downlink overhead will be introduced.

[0207] Optionally, if the new feature terminal and the traditional / ordinary terminal share the same SS for sending the PDCCH scrambled by the RA-RNTI or the MSGB-RNTI, the calculation of the existing RA-RNTI or the MSGB-RNTI can be enhanced to avoid the confusion of the terminal on whether the Msg2 is sent to the ordinary terminal or the new feature terminal.

[0208] For the RedCap terminal, multiple uplink initial BWPs are configured by the system, and the terminal selects one of the uplink initial BWPs to send the Msg1 according to the system configuration or the protocol definition rule. The id of the uplink initial BWP is introduced as one of the input parameters for calculating the RNTI when calculating the RNTI.

[0209] The calculation formula of the RNTI of the RedCap 4-step RACH process is as follows:

[0210] RNTI = 1 + s_id1 + 14 × t_id1 + 14 × 80 × f_id1 + 14 × 80 × 8 × ul_bwp_id

[0211] Wherein, s_id1 = mod(s_id + Δ1, 14), t_id1 = mod(t_id + Δ2, 80), f_id1 = mod(f_id + Δ3, 8). Δ1, Δ2, Δ3 are integers greater than or equal to zero, which are configured by the system message or predefined by the protocol; ul_bwp_id (ul_carrier_id in the original RNTI formula) represents the id of the uplink initial BWP of the RedCap.

[0212] The calculation formula of the RNTI of the RedCap 2-step RACH process is as follows

[0213] RNTI = 1 + s_id1 + 14 × t_id1 + 14 × 80 × f_id1 + 14 × 80 × 8 × ul_bwp_id + 14 × 80 × 8 × 2;

[0214] wherein s_id1 = mod(s_id + Δ1, 14), t_id1 = mod(t_id + Δ2, 80), f_id1 = mod(f_id + Δ3, 8). Δ1, Δ2, Δ3 are integers greater than or equal to zero, configured by system message or predefined by protocol; ul_bwp_id represents the id of the RedCap uplink initial BWP.

[0215] Another RNTI calculation method, the dedicated uplink initial BWP of the RedCap terminal is smaller than the existing uplink initial BWP, and the frequency multiplexing parameter FDM of the RO of the former is smaller than that of the latter, for example, the maximum frequency multiplexing parameter of the RO of the RedCap terminal is 4 or smaller.

[0216] The calculation formula of the RNTI of the RedCap 4-step RACH is:

[0217] RNTI = 1 + s_id1 + 14 × t_id1 + 14 × 80 × f_id1 + 14 × 80 × FDM × ul_bwp_id + 14 × 80 × 8 × 4;

[0218] wherein FDM represents the maximum frequency domain multiplexing number of the RedCap terminal, and ul_bwp_id represents the id of the RedCap uplink initial BWP.

[0219] The calculation formula of the RNTI of the RedCap 2-step RACH is:

[0220] RNTI = 1 + s_id1 + 14 × t_id1 + 14 × 80 × f_id1 + 14 × 80 × FDM × ul_bwp_id + 14 × 80 × 8 × 4 + 14 × 80 × FDM × N_ul_bwp

[0221] wherein N_ul_bwp represents the total number of the RedCap uplink initial BWP.

[0222] In the above formulas, s_id represents the first OFDM symbol number of PRACH, t_id represents the first time slot number of PRACH, f_id is the frequency domain number of PRACH, and ul_carrier_id represents the type of uplink carrier (0 for NUL and 1 for SUL).

[0223] In the embodiment of the present application, after the terminal determines the PRACH resource for the first transmission according to the system message or the protocol predefined rule, the terminal transmits Msg1 using the PRACH resource and calculates the RNTI, thereby achieving the division of the PRACH resource, the PRACH resources of different functions can share the PRACH resource, the PRACH resource fragmentation can be avoided, the RNTI of the new feature terminal does not conflict with the RNTI of the traditional / ordinary terminal, and the resource utilization efficiency is improved.

[0224] Figure 8 A flowchart of a second method for determining PRACH resource provided in the embodiment of the present application is shown in FIG. 2, which includes the following steps: Figure 8

[0225] Step 800, the network device sends downlink signaling to the terminal, and the downlink signaling is used for the terminal to determine the PRACH resource for the first transmission.

[0226] Optionally, the downlink signaling includes at least one of the following: system message, high layer signaling, or a combination of system message and physical layer signaling.

[0227] Optionally, the high layer signaling includes at least one of the following: RRC message, MAC CE signaling.

[0228] The first transmission includes at least one of the following features:

[0229] 4-step random access procedure;

[0230] 2-step random access procedure;

[0231] Msg3 repetition transmission random access procedure;

[0232] Random access based small data transmission (SDT);

[0233] Random access procedure of the first type terminal;

[0234] The PRACH resource includes at least one of the following:

[0235] Random access occasion (RO);

[0236] Pilot sequence (preamble).

[0237] In the embodiment of the present application, the network device sends downlink signaling to the terminal, and the downlink signaling is used for the terminal to determine the PRACH resource for the first transmission, thereby achieving the division of the PRACH resource, avoiding the PRACH resource fragmentation, and improving the resource utilization efficiency.

[0238] ​It should be noted that the method for determining PRACH resources provided in the embodiments of the present application takes the network device as the execution subject. For understanding of the embodiments of the present application, reference can be made to the description in the foregoing embodiments taking the terminal as the execution subject, which will not be repeated here.

[0239] Optionally, the determining the PRACH resource for the first transmission comprises at least one of the following:

[0240] determining the RO resource in an uplink initial bandwidth part (BWP);

[0241] determining an available RO resource corresponding to the first transmission in the RO resource in the uplink initial BWP;

[0242] determining a preamble set associated with the first transmission in the available RO resource.

[0243] Optionally, the downlink signaling carries first configuration information, and the first configuration information is used to indicate the uplink initial BWP.

[0244] wherein the uplink initial BWP is a dedicated uplink initial BWP or a multiplexed first uplink initial BWP.

[0245] wherein the first uplink initial BWP is an uplink initial BWP defined in NR Rel-15 / 16.

[0246] Optionally, the downlink signaling carries third configuration parameters, and the third configuration parameters are used to indicate the available RO resource.

[0247] Optionally, the third configuration parameters are first masks, and the interpretation manner of the first masks is determined according to the mapping relationship between RO and SSB.

[0248] Optionally, in the case that one SSB is associated with multiple ROs in one mapping period, the interpretation manner of the first masks comprises one of the following:

[0249] interpreting according to a first mask table;

[0250] interpreting according to a bit map form;

[0251] interpreting according to a dedicated mask table;

[0252] wherein the first mask table is a mask table defined in NR Rel-15 / 16.

[0253] The special mask table reuses part of the code words of the mask table defined in NR Rel-15 / 16, and the downlink signaling further includes second configuration information for configuring the remaining code words in the mask table, wherein the code words configured in the second configuration information indicate the available RO starting number, and the number of consecutive available ROs or the last available RO number.

[0254] Optionally, in the case of mapping at least one SSB to one RO in one mapping period, the first mask is used to indicate whether the ROs associated with the same SSB in multiple consecutive mapping periods are available ROs.

[0255] Optionally, the effective range of the first mask does not exceed the PRACH associated period, and the starting position of the first mask is the same as the starting boundary of the PRACH associated period.

[0256] Optionally, the third configuration parameter further includes a second mask, and the second mask is used to indicate that part of the available RO resources are used for the random access process of the first type of terminal.

[0257] Optionally, the random access process of the first type of terminal includes at least one of the following:

[0258] The random access process of the first type of terminal for message 3 Msg3 repetition transmission;

[0259] The random access-based small data transmission SDT of the first type of terminal;

[0260] The 4-step random access process of the first type of terminal;

[0261] The 2-step random access process of the first type of terminal.

[0262] Optionally, the multiple first masks correspond to multiple different Msg3 repetition numbers or different coverage levels.

[0263] Optionally, the third configuration parameter is the PRACH period and offset corresponding to the available RO.

[0264] Optionally, the downlink signaling carries the correspondence between the coverage level and the mask.

[0265] Optionally, the downlink signaling carries the number of preambles for contention-based random access of each feature.

[0266] Optionally, the downlink signaling further carries the mask of each feature.

[0267] In the embodiment of the present application, the network device sends downlink signaling to the terminal, and the terminal determines the PRACH resource for the first transmission according to the downlink signaling, thereby achieving division of the PRACH resource, ensuring that PRACHs with different functions can share the PRACH resource, avoiding fragmentation of the PRACH resource, and improving resource utilization efficiency.

[0268] It should be noted that the method for determining the PRACH resource provided in the embodiment of the present application can be executed by a PRACH resource determining device or a control module in the PRACH resource determining device for executing the method for determining the PRACH resource. In the embodiment of the present application, the PRACH resource determining device is taken as an example to illustrate the PRACH resource determining device provided in the embodiment of the present application.

[0269] Figure 9 FIG. 1 shows a structure of the PRACH resource determining device provided in the embodiment of the present application. As shown in FIG. 1, the PRACH resource determining device 900 includes: Figure 9

[0270] A determining unit 910 configured to determine, according to a downlink signaling configuration or a protocol predefined rule, a physical random access channel (PRACH) resource for a first transmission.

[0271] The first transmission includes at least one of the following characteristics:

[0272] a 4-step random access procedure;

[0273] a 2-step random access procedure;

[0274] a random access procedure with message 3 (Msg3) repetition transmission;

[0275] a small data transmission (SDT) based on random access;

[0276] a random access procedure for a first type of terminal;

[0277] The PRACH resource includes at least one of the following:

[0278] a random access occasion (RO);

[0279] a preamble.

[0280] In the embodiment of the present application, the PRACH resource for implementing a new feature is determined according to a downlink signaling configuration or a protocol predefined rule, thereby achieving division of the PRACH resource, avoiding fragmentation of the PRACH resource, ensuring fair and efficient allocation and utilization of the PRACH resource, and improving resource utilization efficiency. ​

[0281] Optionally, the first type of terminal supports at least one of the following features:

[0282] Supporting a bandwidth lower than a preset threshold;

[0283] Supporting a number of receive antennas lower than a preset number;

[0284] The preset threshold is a working bandwidth defined in NR Rel-15 / 16, and the preset number is a number of receive antennas defined in NR Rel-15 / 16.

[0285] Optionally, the PRACH resource for the first transmission is determined by at least one of the following:

[0286] Determining an RO resource in an initial uplink partial bandwidth BWP;

[0287] Determining an available RO resource corresponding to the first transmission in the RO resource in the initial uplink BWP;

[0288] Determining a preamble set associated with the first transmission in the available RO resource.

[0289] In the embodiments of the present application, the PRACH resource for the first transmission is determined by first determining an RO resource in an initial uplink partial bandwidth BWP, then determining an available RO resource in the RO resource, and further determining a preamble set in the available RO resource, which realizes the division of the PRACH resource, and PRACHs with different functions can share the PRACH resource, so as to avoid the fragmentation of the PRACH resource and improve the resource utilization efficiency.

[0290] Optionally, the method further comprises:

[0291] A processing unit configured to send a message 1 Msg1 using the PRACH resource and calculate a radio network temporary identifier RNTI.

[0292] In the embodiments of the present application, after the PRACH resource for the first transmission is determined, the Msg1 is sent using the PRACH resource, and the RNTI is calculated, which can facilitate the terminal to receive the downlink information and avoid the conflict between the RNTI of the new feature terminal and the RNTI of the traditional / ordinary terminal.

[0293] Optionally, before the RO resource in the initial uplink partial bandwidth BWP is determined, the method further comprises:

[0294] Determining an initial uplink partial bandwidth BWP according to a system message or a protocol predefined rule;

[0295] The uplink initial BWP is a dedicated uplink initial BWP or a multiplexed first uplink initial BWP.

[0296] The first uplink initial BWP is an uplink initial BWP defined in NR Rel-15 / 16.

[0297] Optionally, the determining of the RO resource in the uplink initial partial bandwidth BWP includes:

[0298] In a case where the uplink initial BWP is multiplexed with the first uplink initial BWP, the terminal multiplexes the RO resource in the first uplink initial BWP and the first configuration parameter corresponding to the RO resource in the first uplink initial BWP; or,

[0299] In a case where the uplink initial BWP is a dedicated uplink initial BWP and there is a frequency domain overlap between the dedicated uplink initial BWP and the first uplink initial BWP, the terminal regards the RO resource of the first uplink initial BWP in the frequency domain overlap region as the RO resource in the dedicated uplink initial BWP, and multiplexes the configuration result of the RO resource of the first uplink initial BWP; or,

[0300] In a case where the uplink initial BWP is a dedicated uplink initial BWP, the terminal determines the RO resource in the dedicated uplink initial BWP according to system message configuration, calculates the second configuration parameter of the RO resource of the dedicated uplink initial BWP according to the first configuration parameter of the RO resource of the first uplink initial BWP, and ensures that the SSB associated with the RO of the first uplink initial BWP is the same as the SSB associated with the RO of the dedicated uplink initial BWP on the same time resource.

[0301] The RO resource in the first uplink initial BWP includes at least one of the following: an RO resource of a 4-step random access procedure, an RO resource of a 2-step random access procedure.

[0302] The first configuration parameter or the second configuration parameter includes a mapping relationship between a synchronization signal block (SSB) and an RO.

[0303] Optionally, the determining of the available RO resource corresponding to the first transmission from the RO resource in the uplink initial BWP includes:

[0304] The terminal obtains a third configuration parameter in a system message, and determines the available RO resource corresponding to the first transmission from the RO resource in the uplink initial BWP according to the third configuration parameter; or,

[0305] In a case where the third configuration parameter is not in the system message, the RO resource in the uplink initial BWP is determined as the available RO resource corresponding to the first transmission.

[0306] The third configuration parameter is used to indicate the available RO resource.

[0307] Optionally, the third configuration parameter is a first mask, and a reading manner of the first mask is determined according to a mapping relationship between the RO and the SSB.

[0308] Optionally, in a case where one SSB is associated with multiple ROs in one mapping period, the reading manner of the first mask includes one of the following:

[0309] reading according to a first mask table;

[0310] reading according to a bit map form;

[0311] reading according to a special mask table;

[0312] The first mask table is a mask table defined in NR Rel-15 / 16.

[0313] The special mask table reuses part of code words of the mask table defined in NR Rel-15 / 16, and the remaining code words in the mask table are configured by a system message, and the code words configured by the system message indicate a starting number of available ROs and a number of continuous available ROs or a last available RO number.

[0314] Optionally, in a case where one RO is mapped to at least one SSB in one mapping period, the first mask is used to indicate whether ROs associated with the same SSB in multiple continuous mapping periods are available ROs.

[0315] Optionally, an effective range of the first mask does not exceed a PRACH associated period, and a starting position of the first mask is the same as a starting boundary of the PRACH associated period.

[0316] Optionally, the third configuration parameter further includes a second mask, and the second mask is used to indicate that part of the available RO resource is used for a random access process of the first type terminal.

[0317] Optionally, the random access process of the first type terminal includes at least one of the following:

[0318] a random access process of message 3 Msg3 repetition transmission of the first type terminal;

[0319] a small data transmission SDT based on random access of the first type terminal;

[0320] a 4-step random access process of the first type terminal;

[0321] The 2-step random access procedure of the first type terminal.

[0322] Optionally, the plurality of first masks correspond to a plurality of different Msg3 repetition numbers or different coverage levels.

[0323] Optionally, the third configuration parameter is a PRACH period and an offset corresponding to the available RO.

[0324] The third configuration parameter is a PRACH period and an offset corresponding to the available RO.

[0325] According to the PRACH period and the offset corresponding to the available RO, the RO in the PRACH period is determined as the available RO resource.

[0326] Optionally, the determination of the available RO resource corresponding to the first transmission in the RO resource in the uplink initial BWP comprises:

[0327] According to the reference signal receiving power (RSRP) of the downlink signal, the coverage level of the terminal is determined.

[0328] According to the mask corresponding to the coverage level, the available RO resource corresponding to the first transmission is determined.

[0329] The correspondence between the coverage level and the mask is configured by a system message or predefined by a protocol.

[0330] Optionally, in the case that the uplink initial BWP is a dedicated uplink initial BWP and the dedicated uplink initial BWP exists a frequency domain overlap with the first uplink initial BWP and multiplexes the RO resource of the first uplink initial BWP, the determination of the available RO resource corresponding to the first transmission in the RO resource in the uplink initial BWP comprises:

[0331] According to the frequency relative offset relationship between the first uplink initial BWP and the dedicated uplink initial BWP predefined by a protocol, and the available RO set corresponding to the RO resource of the first uplink initial BWP, the available RO resource of the dedicated uplink initial BWP is determined; or,

[0332] The intersection of the association result of the RO of the first uplink initial BWP and the SSB and the RO in the dedicated uplink initial BWP is determined, the mask corresponding to each SSB is determined, the intersection of all SSB masks is taken as the mask of the dedicated uplink initial BWP, and the mask of the dedicated uplink initial BWP is applied to the RO associated with all SSBs to determine the available RO.

[0333] In the embodiments of the present application, the PRACH resource used for the first transmission is determined according to system messages or protocol predefined rules, the division of PRACH resources is realized, PRACHs with different functions can share PRACH resources, PRACH resource fragmentation can be avoided, and resource utilization efficiency is improved.

[0334] Optionally, the determining of the preamble set associated with the first transmission in the available RO resource comprises:

[0335] The number of preambles of contention-based random access of each feature supported by the available RO resource is determined according to the number of preambles of contention-based random access of each feature indicated in the system message and the preamble division sequence of each feature predefined by the protocol, to obtain the preamble set associated with the first transmission.

[0336] Optionally, each feature supported by the available RO resource is determined according to a mask of each feature or a protocol predefined rule.

[0337] Optionally, the calculation of the RNTI comprises:

[0338] The RNTI is calculated according to the id of the uplink initial BWP; or

[0339] The RNTI is calculated according to the RO frequency multiplexing parameter of the terminal and the id of the uplink initial BWP; or

[0340] The RNTI is calculated according to the total number of the uplink initial BWP.

[0341] In the embodiments of the present application, after the PRACH resource used for the first transmission is determined according to system messages or protocol predefined rules, the Msg1 is sent using the PRACH resource, and the RNTI is calculated, the division of PRACH resources is realized, PRACHs with different functions can share PRACH resources, PRACH resource fragmentation can be avoided, and the RNTI of a new feature terminal does not conflict with the RNTI of a traditional / ordinary terminal, and resource utilization efficiency is improved.

[0342] The PRACH resource determination apparatus in the embodiments of the present applicationapplicationbe a device, a device with an operating system, or an electronic device, andapplicationalso be a component in a terminal, an integrated circuit, or a chip. The device or electronic deviceapplicationbe a mobile terminal or a non-mobile terminal. Exemplarily, the mobile terminalapplicationinclude, but is not limited to, the types of the terminal 11 listed above, and the non-mobile terminalapplicationbe a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a teller machine, or a self-service machine, and the like, without specific limitation in the embodiments of the present application.

[0343] The PRACH resource determination apparatus provided in the embodiments of the present applicationapplicationimplement the method embodiments Figures 2 to 7 achieve the same technical effects, and thus details are not repeated here.

[0344] Figure 10 A second structural diagram of the PRACH resource determination apparatus provided in the embodiments of the present application is shown in FIG. 10. As shown in FIG. 10, the PRACH resource determination apparatus 1000applicationinclude the following components. Figure 10

[0345] The sending unit 1010applicationbe configured to send, to a terminal, downlink signaling used by the terminal to determine a physical random access channel (PRACH) resource used for first transmission.

[0346] The first transmissionapplicationinclude at least one of the following characteristics:

[0347] a 4-step random access procedure;

[0348] a 2-step random access procedure;

[0349] a message 3 (Msg3) repetition transmission random access procedure;

[0350] a small data transmission (SDT) based on random access;

[0351] a random access procedure for a first type of terminal;

[0352] The PRACH resourceapplicationinclude at least one of the following:

[0353] a random access occasion (RO);

[0354] a preamble.

[0355] ​In the embodiment of the present application, the terminal is sent downlink signaling for determining the PRACH resource for the first transmission, the PRACH resource is divided, the PRACH resource fragmentation is avoided, and the resource utilization efficiency is improved.

[0356] Optionally, the determining the PRACH resource for the first transmission comprises at least one of the following:

[0357] determining the RO resource in the uplink initial partial bandwidth BWP;

[0358] determining the available RO resource corresponding to the first transmission in the RO resource in the uplink initial BWP;

[0359] determining the preamble set associated with the first transmission in the available RO resource.

[0360] Optionally, the downlink signaling carries first configuration information, and the first configuration information is used to indicate the uplink initial partial bandwidth BWP.

[0361] wherein the uplink initial BWP is a dedicated uplink initial BWP or a multiplexed first uplink initial BWP.

[0362] wherein the first uplink initial BWP is an uplink initial BWP defined in NR Rel-15 / 16.

[0363] Optionally, the downlink signaling carries third configuration parameters, and the third configuration parameters are used to indicate the available RO resource.

[0364] Optionally, the third configuration parameters are first masks, and the interpretation manner of the first masks is determined according to the mapping relationship between the RO and the SSB.

[0365] Optionally, in the case that one SSB is associated with multiple ROs in one mapping period, the interpretation manner of the first masks comprises one of the following:

[0366] interpreting according to a first mask table;

[0367] interpreting according to a bit map form;

[0368] interpreting according to a dedicated mask table;

[0369] wherein the first mask table is a mask table defined in NR Rel-15 / 16.

[0370] The special mask table reuses part of the code words of the mask table defined in NR Rel-15 / 16, and the downlink signaling further includes second configuration information for configuring the remaining code words in the mask table, wherein the code words configured in the second configuration information indicate the available RO starting number, and the number of consecutive available ROs or the last available RO number.

[0371] Optionally, in the case of mapping at least one SSB to one RO in one mapping period, the first mask is used to indicate whether the ROs associated with the same SSB in multiple consecutive mapping periods are available ROs.

[0372] Optionally, the effective range of the first mask does not exceed the PRACH associated period, and the starting position of the first mask is the same as the starting boundary of the PRACH associated period.

[0373] Optionally, the third configuration parameter further includes a second mask, and the second mask is used to indicate that part of the available RO resources are used for the random access process of the first type of terminal.

[0374] Optionally, the random access process of the first type of terminal includes at least one of the following:

[0375] Message 3 (Msg3) repetition transmission of the first type of terminal;

[0376] Small data transmission (SDT) based on random access of the first type of terminal;

[0377] 4-step random access process of the first type of terminal;

[0378] 2-step random access process of the first type of terminal.

[0379] Optionally, a plurality of first masks correspond to a plurality of different Msg3 repetition numbers or different coverage levels.

[0380] Optionally, the third configuration parameter is the PRACH period and offset corresponding to the available RO.

[0381] Optionally, the downlink signaling carries the correspondence between the coverage level and the mask.

[0382] Optionally, the downlink signaling carries the number of preambles of the contention-based random access of each feature.

[0383] Optionally, the downlink signaling further carries the mask of each feature.

[0384] In the embodiments of the present application, the terminal determines the PRACH resource used for the first transmission according to the downlink signaling sent by the terminal, the division of the PRACH resource is realized, the PRACHs with different functions can share the PRACH resource, the fragmentation of the PRACH resource can be avoided, and the resource utilization efficiency is improved.

[0385] The PRACH resource determination apparatus in the embodiments of the present application can be an apparatus, an apparatus with an operating system or an electronic device, and can also be a component in a terminal, an integrated circuit or a chip. The apparatus or the electronic device can be a mobile terminal or a non-mobile terminal. Exemplarily, the mobile terminal can include, but is not limited to, the types of the terminal 11 listed above, and the non-mobile terminal can be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a cashier machine or a self-service machine, etc., and the embodiments of the present application are not limited specifically.

[0386] The PRACH resource determination apparatus provided in the embodiments of the present application can realize the processes of the method embodiments and achieve the same technical effects, and thus, details are not repeated here. Figure 8 The PRACH resource determination apparatus provided in the embodiments of the present application can realize the processes of the method embodiments and achieve the same technical effects, and thus, details are not repeated here.

[0387] Optionally, as shown in Figure 11 The present application also provides a communication device 1100, which includes a processor 1101, a memory 1102, and a program or instruction stored in the memory 1102 and executable on the processor 1101. When the program or instruction is executed by the processor 1101, the processes of the PRACH resource determination method embodiments described above are realized, and the same technical effects are achieved. When the communication device 1100 is a terminal, the processes of the PRACH resource determination method embodiments described above are realized, and the same technical effects are achieved. When the communication device 1100 is a network side device, the processes of the PRACH resource determination method embodiments described above are realized, and the same technical effects are achieved. To avoid repetition, details are not repeated here.

[0388] The embodiment of the application further provides a terminal, comprising a processor and a communication interface, the processor is configured to determine a physical random access channel (PRACH) resource used for a first transmission according to downlink signaling configuration or a protocol predefined rule, wherein the first transmission comprises at least one of the following characteristics: a 4-step random access procedure; a 2-step random access procedure; a message 3 (Msg3) repeated transmission random access procedure; a random access small data transmission (SDT); and a first type terminal random access procedure. The PRACH resource comprises at least one of the following: a random access occasion (RO); and a pilot sequence (preamble). The terminal embodiment corresponds to the terminal side method embodiment described above, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment and achieve the same technical effects. Specifically, Figure 12 A hardware structure diagram of a terminal according to an embodiment of the application.

[0389] The terminal 1200 comprises, but is not limited to, at least part of the following components: a radio frequency unit 1201, a network module 1202, an audio output unit 1203, an input unit 1204, a sensor 1205, a display unit 1206, a user input unit 1207, an interface unit 1208, a memory 1209, and a processor 1210, etc.

[0390] Those skilled in the art can understand that the terminal 1200 can further comprise a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected to the processor 1210 through a power management system, so as to realize functions such as power management, discharge, and power consumption management through the power management system. Figure 12 The terminal structure shown in the figure does not constitute a limitation on the terminal, and the terminal can comprise more or fewer components than the figure, or combine certain components, or different component arrangements, which are not described here.

[0391] It should be understood that in the embodiments of the present application, the input unit 1204 can include a graphics processing unit (GPU) 12041 and a microphone 12042. The graphics processing unit 12041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1206 can include a display panel 12061, which can be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 1207 includes a touch panel 12071 and other input devices 12072. The touch panel 12071 is also called a touch screen. The touch panel 12071 can include two parts of a touch detection device and a touch controller. The other input devices 12072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), trackballs, mice, joysticks, and the like, which will not be described here.

[0392] In the embodiments of the present application, the radio frequency unit 1201 receives the downlink data from the network side device and processes it by the processor 1210. In addition, the radio frequency unit 1201 sends the uplink data to the network side device. Generally, the radio frequency unit 1201 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0393] The memory 1209 can be used to store software programs or instructions and various data. The memory 1209 can mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area can store an operating system, at least one application program or instruction required by a function (such as a sound playing function, an image playing function, etc.), etc. In addition, the memory 1209 can include a high-speed random access memory, and can also include a non-volatile memory, which can 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. For example, at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state memory device.

[0394] The processor 1210 can include one or more processing units; optionally, the processor 1210 can integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, and an application program or instruction, etc., and the modem processor mainly processes wireless communication, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 1210.

[0395] The processor 1210 is configured to determine, according to downlink signaling configuration or protocol predefined rules, a physical random access channel (PRACH) resource for a first transmission.

[0396] The first transmission includes at least one of the following characteristics:

[0397] A 4-step random access procedure;

[0398] A 2-step random access procedure;

[0399] A random access procedure with message 3 (Msg3) repetition transmission;

[0400] Small data transmission (SDT) based on random access;

[0401] A random access procedure for a first type of terminal;

[0402] The PRACH resource includes at least one of the following:

[0403] A random access occasion (RO);

[0404] A preamble sequence.

[0405] In the embodiments of the present application, the terminal determines, according to downlink signaling configuration or protocol predefined rules, a physical random access channel (PRACH) resource for implementing a new characteristic, which realizes the division of the PRACH resource, avoids PRACH resource fragmentation, and improves resource utilization efficiency.

[0406] Optionally, the first type of terminal supports at least one of the following characteristics:

[0407] Support for a bandwidth lower than a preset threshold;

[0408] Support for a number of receive antennas lower than a preset number;

[0409] The preset threshold is a working bandwidth defined in NR Rel-15 / 16, and the preset number is a number of receive antennas defined in NR Rel-15 / 16.

[0410] Optionally, the determination of the PRACH resource for the first transmission includes at least one of the following:

[0411] Determination of an RO resource within an initial uplink bandwidth part (BWP);

[0412] Determination of an available RO resource corresponding to the first transmission from the RO resource within the initial uplink BWP;

[0413] Determination of a preamble set associated with the first transmission within the available RO resource.

[0414] In the embodiment of the present application, the terminal determines the PRACH resource for the first transmission, which includes first determining the RO resource in the uplink initial bandwidth BWP, then determining the available RO resource in the RO resource, and further determining the preamble set in the available RO resource, thereby achieving the division of the PRACH resource, the PRACH resources of different functions can share the PRACH resource, the PRACH resource fragmentation can be avoided, and the resource utilization efficiency is improved.

[0415] Optionally, the processor 1210 is further configured to: send a message 1 Msg1 using the PRACH resource, and calculate a radio network temporary identifier RNTI.

[0416] In the embodiment of the present application, after the terminal determines the PRACH resource for the first transmission, the terminal sends Msg1 using the PRACH resource and calculates the RNTI, which can facilitate the terminal to receive the downlink information and avoid the conflict between the RNTI of the new feature terminal and the RNTI of the traditional / ordinary terminal.

[0417] Optionally, the processor 1210 is further configured to:

[0418] determine the uplink initial bandwidth BWP according to a system message or a protocol predefined rule;

[0419] The uplink initial BWP is a dedicated uplink initial BWP, or multiplexes a first uplink initial BWP.

[0420] The first uplink initial BWP is an uplink initial BWP defined in NR Rel-15 / 16.

[0421] Optionally, the determination of the RO resource in the uplink initial bandwidth BWP includes:

[0422] In the case where the uplink initial BWP multiplexes the first uplink initial BWP, the terminal multiplexes the RO resource in the first uplink initial BWP and the first configuration parameter corresponding to the RO resource in the first uplink initial BWP; or,

[0423] In the case where the uplink initial BWP is a dedicated uplink initial BWP and the dedicated uplink initial BWP and the first uplink initial BWP exist frequency domain overlap, the terminal takes the RO resource of the first uplink initial BWP in the frequency domain overlap region as the RO resource in the dedicated uplink initial BWP, and multiplexes the configuration result of the RO resource of the first uplink initial BWP; or,

[0424] In a case where the uplink initial BWP is a dedicated uplink initial BWP, the terminal determines the RO resource in the dedicated uplink initial BWP according to the system message configuration, and calculates the second configuration parameter of the RO resource of the dedicated uplink initial BWP according to the first configuration parameter of the RO resource of the first uplink initial BWP, and ensures that the SSB associated with the RO of the first uplink initial BWP is the same as the SSB associated with the RO of the dedicated uplink initial BWP on the same time resource;

[0425] The RO resource in the first uplink initial BWP includes at least one of the following: RO resource of a 4-step random access procedure, RO resource of a 2-step random access procedure.

[0426] The first configuration parameter or the second configuration parameter includes a mapping relationship between a synchronization signal block (SSB) and an RO.

[0427] Optionally, the determination of the available RO resource corresponding to the first transmission from the RO resource in the uplink initial BWP includes:

[0428] The terminal obtains a third configuration parameter in a system message, and determines the available RO resource corresponding to the first transmission from the RO resource in the uplink initial BWP according to the third configuration parameter; or

[0429] In a case where the third configuration parameter is not included in the system message, the RO resource in the uplink initial BWP is determined as the available RO resource corresponding to the first transmission.

[0430] The third configuration parameter is used to indicate the available RO resource.

[0431] Optionally, the third configuration parameter is a first mask, and the interpretation manner of the first mask is determined according to a mapping relationship between an RO and an SSB.

[0432] Optionally, in a case where one SSB is associated with multiple ROs in one mapping period, the interpretation manner of the first mask includes one of the following:

[0433] Interpretation is performed according to a first mask table;

[0434] Interpretation is performed according to a bit map form;

[0435] Interpretation is performed according to a dedicated mask table;

[0436] The first mask table is a mask table defined in NR Rel-15 / 16.

[0437] The dedicated mask table reuses part of the code words of the mask table defined in NR Rel-15 / 16, and the rest of the code words in the mask table are configured by a system message, and the code words configured by the system message indicate available RO starting numbers and the number of consecutive available ROs or the last available RO number.

[0438] Optionally, in the case of mapping at least one SSB to one RO in one mapping period, the first mask is used to indicate whether the ROs associated with the same SSB in multiple consecutive mapping periods are available ROs.

[0439] Optionally, the effective range of the first mask does not exceed a PRACH associated period, and the starting position of the first mask is the same as the starting boundary of the PRACH associated period.

[0440] Optionally, the third configuration parameter further includes a second mask, and the second mask is used to indicate that part of the ROs in the available RO resources are used for the random access process of the first type of terminal.

[0441] Optionally, the random access process of the first type of terminal includes at least one of the following:

[0442] Message 3 (Msg3) repetition transmission of the first type of terminal;

[0443] Small data transmission (SDT) based on random access of the first type of terminal;

[0444] 4-step random access process of the first type of terminal;

[0445] 2-step random access process of the first type of terminal.

[0446] Optionally, a plurality of first masks correspond to a plurality of different Msg3 repetition numbers or different coverage levels.

[0447] Optionally, the third configuration parameter is a PRACH period and an offset corresponding to the available RO.

[0448] The available RO resource corresponding to the first transmission is determined from the RO resources in the uplink initial BWP according to the third configuration parameter, including:

[0449] According to the PRACH period and the offset corresponding to the available RO, the RO in the PRACH period is determined as the available RO resource.

[0450] Optionally, the determination of the available RO resource corresponding to the first transmission in the RO resources in the uplink initial BWP includes:

[0451] According to the reference signal received power (RSRP) of the downlink signal, the coverage level of the terminal is determined.

[0452] determining available RO resources corresponding to the first transmission according to a mask corresponding to the coverage level;

[0453] The correspondence between the coverage level and the mask is configured by a system message or predefined by a protocol.

[0454] Optionally, in a case where the uplink initial BWP is a dedicated uplink initial BWP, and the dedicated uplink initial BWP exists frequency domain overlap with the first uplink initial BWP and multiplexes RO resources of the first uplink initial BWP, the determining of the available RO resources corresponding to the first transmission in the RO resources in the uplink initial BWP comprises:

[0455] determining available RO resources of the dedicated uplink initial BWP according to a frequency relative offset relationship between the first uplink initial BWP and the dedicated uplink initial BWP predefined by a protocol, and available RO sets corresponding to RO resources of the first uplink initial BWP; or,

[0456] determining a mask corresponding to each SSB by taking an intersection of an association result of ROs of the first uplink initial BWP and SSBs and ROs in the dedicated uplink initial BWP, taking an intersection of all SSB masks as a mask of the dedicated uplink initial BWP, and applying the mask of the dedicated uplink initial BWP on ROs associated with all SSBs to determine available ROs.

[0457] In the embodiment of the application, a terminal determines a physical random access channel (PRACH) resource for a first transmission according to a system message or a protocol predefined rule, PRACH resource division is achieved, PRACHs with different functions can share PRACH resources, PRACH resource fragmentation can be avoided, and resource utilization efficiency is improved.

[0458] Optionally, the determining of the preamble set associated with the first transmission in the available RO resources comprises:

[0459] determining the preamble set associated with the first transmission in the available RO resources according to a number of preambles of contention-based random access of each feature indicated in a system message, and a number of preambles of contention-based random access of each feature supported by the available RO resources determined according to a preamble division order of each feature predefined by a protocol.

[0460] Optionally, each feature supported by the available RO resources is determined according to a mask of the feature or a protocol predefined rule.

[0461] Optionally, the calculating of the RNTI comprises:

[0462] calculating a radio network temporary identifier (RNTI) according to the identifier id of the uplink initial BWP; or

[0463] calculating a radio network temporary identifier (RNTI) according to the RO frequency multiplexing parameter of the terminal and the identifier id of the uplink initial BWP; or

[0464] calculating a radio network temporary identifier (RNTI) according to the total number of the uplink initial BWPs.

[0465] In the embodiments of the present application, after the terminal determines the physical random access channel (PRACH) resource used for the first transmission according to the system message or the protocol predefined rule, the terminal transmits Msg1 using the PRACH resource and calculates the RNTI, which realizes the division of the PRACH resource, different functions of the PRACH can share the PRACH resource, the PRACH resource fragmentation can be avoided, and the RNTI of the new feature terminal does not conflict with the RNTI of the traditional / ordinary terminal, thereby improving the resource utilization efficiency.

[0466] The embodiments of the present application also provide a network side device, which comprises a processor and a communication interface, the communication interface is used for transmitting downlink signaling to a terminal, the downlink signaling is used for the terminal to determine a physical random access channel (PRACH) resource used for the first transmission; wherein the first transmission comprises at least one of the following features: a 4-step random access procedure; a 2-step random access procedure; a random access procedure of message 3 (Msg3) repetition transmission; a small data transmission (SDT) based on random access; a random access procedure of a first type terminal; wherein the PRACH resource comprises at least one of the following: a random access occasion (RO); a pilot sequence (preamble). The network side device embodiment is corresponding to the network side device method embodiment described above, each implementation process and implementation manner of the method embodiment can be applied to the network side device embodiment, and the same technical effects can be achieved.

[0467] Specifically, the embodiments of the present application also provide a network side device. As shown in the Figure 13 The network device 1300 comprises an antenna 1301, a radio frequency device 1302, and a baseband device 1303. The antenna 1301 is connected with the radio frequency device 1302. In the uplink direction, the radio frequency device 1302 receives information through the antenna 1301 and sends the received information to the baseband device 1303 for processing. In the downlink direction, the baseband device 1303 processes the information to be sent and sends it to the radio frequency device 1302, and the radio frequency device 1302 processes the received information and sends it out through the antenna 1301.

[0468] The above frequency band processing device can be located in the baseband device 1303, and the method performed by the network side device in the above embodiment can be implemented in the baseband device 1303, which includes a processor 1304 and a memory 1305.

[0469] The baseband device 1303 can include at least one baseband board, for example, on which a plurality of chips are arranged, such as Figure 13 as shown, one of which is a processor 1304 connected with the memory 1305 to invoke the program in the memory 1305 to perform the operations of the network device shown in the above method embodiment.

[0470] The baseband device 1303 can also include a network interface 1306 for interacting with the radio frequency device 1302, which can be a common public radio interface (CPRI).

[0471] Specifically, the network side device of the embodiment of the application further includes instructions or programs stored in the memory 1305 and executable on the processor 1304, and the processor 1304 invokes the instructions or programs in the memory 1305 to perform the method shown by the modules Figure 10 The modules shown perform the method and achieve the same technical effect, and to avoid repetition, this will not be repeated here.

[0472] The embodiment of the application also provides a readable storage medium, which stores programs or instructions, and the programs or instructions are executed by a processor to implement each process of the above-mentioned PRACH resource determination method embodiment and achieve the same technical effect. To avoid repetition, this will not be repeated here.

[0473] The processor is the processor in the terminal in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer readable memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0474] The embodiment of the application further provides a chip, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement each process of the above-mentioned PRACH resource determination method embodiment and achieve the same technical effect. To avoid repetition, this will not be repeated here.

[0475] It should be understood that the chip mentioned in the embodiment of the application can also be referred to as a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0476] It should be noted that, in the present document, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element. Furthermore, it is to be understood that the method and apparatus of the present application can be carried out by more than one process, method, article, or apparatus either simultaneously, concurrently, or with intervening action that are carried out at the same time, either in a simultaneous fashion or in a fashion that is interleaved in time. For example, the described methods can be performed in a different order from that described, and / or various steps can be combined or omitted, and / or additional steps can be added, without departing from the scope of the present application. Also, features described with respect to certain examples can be combined in other examples.

[0477] From the above description of the embodiments, it is apparent that the above-described method of the embodiments can be realized by means of software and general-purpose hardware platforms, and of course, can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such an understanding, the technical solutions of the present application can be embodied in the form of a computer software product, which is stored in a storage medium (such as a ROM / RAM, a magnetic disk, or an optical disk), and includes a plurality of instructions for causing a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the method described in each embodiment of the present application.

[0478] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-described specific embodiments, and the above-described specific embodiments are merely illustrative, rather than limiting, and those of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims, which all belong to the protection of the present application.

Claims

1. A method for determining PRACH resource, characterized in that, Comprising: A terminal determines a physical random access channel (PRACH) resource for a first transmission according to downlink signaling configuration or a protocol predefined rule; The terminal is a RedCap terminal; The determination of the PRACH resource for the first transmission comprises determining an available RO resource corresponding to the first transmission in an RO resource in an initial uplink bandwidth part (BWP); the determination of the available RO resource corresponding to the first transmission in the RO resource in the initial uplink BWP comprises: the terminal acquires a third configuration parameter in a system message, and determines the available RO resource corresponding to the first transmission from the RO resource in the initial uplink BWP according to the third configuration parameter; or, in the case where the third configuration parameter is not in the system message, the RO resource in the initial uplink BWP is determined as the available RO resource corresponding to the first transmission; wherein the third configuration parameter is used to indicate the available RO resource; The first transmission contains a new feature of Rel-17, and the first transmission comprises at least one of the following features: 4-step random access procedure; 2-step random access procedure; Random access procedure with message 3 (Msg3) repetition transmission; Random access small data transmission (SDT); Random access procedure for a first type of terminal; The PRACH resource comprises at least one of the following: Random access occasion (RO); Pilot sequence (preamble).

2. The method of claim 1, wherein, The determination of the PRACH resource for the first transmission comprises at least one of the following: Determination of the RO resource in the initial uplink BWP; Determination of a preamble set associated with the first transmission in the available RO resource. 3.The method of Claim 1, wherein, After the determination of the PRACH resource for the first transmission, the terminal further performs the following steps: The terminal transmits a message 1 (Msg1) using the PRACH resource and calculates a radio network temporary identifier (RNTI).

4. The method of claim 2, wherein, Before the determination of the RO resource in the initial uplink BWP, the terminal further performs the following steps: Determination of an initial uplink bandwidth part (BWP) according to a system message or a protocol predefined rule; The initial uplink BWP is a dedicated initial uplink BWP or a first initial uplink BWP; The first initial uplink BWP is an initial uplink BWP defined in NR Rel-15 / 16.

5. The method of determining PRACH resources according to claim 4, wherein, The determination of the RO resource in the initial uplink BWP comprises: In the case where the initial uplink BWP is multiplexed with the first initial uplink BWP, the terminal multiplexes an RO resource in the first initial uplink BWP and a first configuration parameter corresponding to the RO resource in the first initial uplink BWP; or, In the case where the initial uplink BWP is a dedicated initial uplink BWP and there is a frequency domain overlap between the dedicated initial uplink BWP and the first initial uplink BWP, the terminal takes an RO resource of the first initial uplink BWP in the frequency domain overlap region as an RO resource in the dedicated initial uplink BWP, and multiplexes a configuration result of the RO resource of the first initial uplink BWP; or, In a case that the uplink initial BWP is a dedicated uplink initial BWP, the terminal determines the RO resource in the dedicated uplink initial BWP according to the system message configuration, and calculates the second configuration parameter of the RO resource of the dedicated uplink initial BWP according to the first configuration parameter of the RO resource of the first uplink initial BWP, and ensures that the SSB associated with the RO of the first uplink initial BWP is the same as the SSB associated with the RO of the dedicated uplink initial BWP on the same time resource. The RO resource in the first uplink initial BWP includes at least one of the following: RO resource of a 4-step random access procedure, RO resource of a 2-step random access procedure. The first configuration parameter or the second configuration parameter includes a mapping relationship between a synchronization signal block (SSB) and an RO.

6. The method of determining PRACH resources according to claim 1, wherein, The third configuration parameter is a first mask, and the interpretation manner of the first mask is determined according to the mapping relationship between the RO and the SSB. 7.The method of Claim 6, wherein, In a case that one SSB is associated with multiple ROs in one mapping period, the interpretation manner of the first mask includes one of the following: Interpretation according to a first mask table; Interpretation according to a bit map form; Interpretation according to a dedicated mask table. The first mask table is a mask table defined in NR Rel-15 / 16. The dedicated mask table multiplexes part of the code words of the mask table defined in NR Rel-15 / 16, and the remaining code words of the mask table are configured by a system message, and the code words configured by the system message indicate a starting number of available ROs and a number of consecutive available ROs or a last available RO number. 8.The method of claim 6, wherein, In a case that one RO is mapped to at least one SSB in one mapping period, the first mask is used to indicate whether the ROs associated with the same SSB in multiple consecutive mapping periods are available ROs. 9.The method of Claim 8, wherein, The effective range of the first mask does not exceed a PRACH association period, and the starting position of the first mask is the same as the starting boundary of the PRACH association period.

10. The method of claim 6, wherein, The third configuration parameter further includes a second mask, and the second mask is used to indicate that part of the available RO resources are used for a random access procedure of the first type terminal.

11. The method of determining PRACH resources according to claim 1 or 10, wherein, The random access procedure of the first type terminal includes at least one of the following: Random access procedure of message 3 (Msg3) repetition transmission of the first type terminal; Small data transmission (SDT) based on random access of the first type terminal; 4-step random access procedure of the first type terminal; 2-step random access procedure of the first type terminal.

12. The method of determining PRACH resources according to claim 6, wherein, The multiple first masks correspond to multiple different Msg3 repetition numbers or different coverage levels.

13. The method of claim 5, wherein, The third configuration parameter is a PRACH period and an offset corresponding to an available RO. The third configuration parameter is a PRACH period and an offset corresponding to an available RO. According to the PRACH period and the offset corresponding to the available RO, the RO in the PRACH period is determined as the available RO resource.

14. The method of claim 3, wherein, The determining the available RO resource corresponding to the first transmission in the RO resource in the uplink initial BWP comprises: determining the coverage level of the terminal according to the reference signal receiving power (RSRP) of the downlink signal; determining the available RO resource corresponding to the first transmission according to the mask corresponding to the coverage level; The correspondence between the coverage level and the mask is configured by a system message or predefined by a protocol.

15. The method of claim 5, wherein, In the case that the uplink initial BWP is a dedicated uplink initial BWP and the dedicated uplink initial BWP exists frequency domain overlap with the first uplink initial BWP and multiplexes the configuration result of the RO resource of the first uplink initial BWP, the determining the available RO resource corresponding to the first transmission in the RO resource in the uplink initial BWP comprises: determining the available RO resource of the dedicated uplink initial BWP according to the frequency relative offset relationship between the first uplink initial BWP and the dedicated uplink initial BWP predefined by a protocol, and the available RO set corresponding to the RO resource of the first uplink initial BWP; or taking the intersection of the association result of the RO of the first uplink initial BWP and the SSB and the RO in the dedicated uplink initial BWP, determining the mask corresponding to each SSB, taking the intersection of all SSB masks as the mask of the dedicated uplink initial BWP, and applying the mask of the dedicated uplink initial BWP on the RO associated with all SSBs to determine the available RO.

16. The method of claim 2, wherein, The determining the preamble set associated with the first transmission in the available RO resource comprises: determining the number of preambles of the contention-based random access of each feature supported by the available RO resource according to the number of preambles of the contention-based random access of each feature indicated in the system message and the preamble division order of each feature predefined by a protocol, to obtain the preamble set associated with the first transmission.

17. The method of determining PRACH resources according to claim 16, wherein, The each feature supported by the available RO resource is determined according to the mask of the each feature or a protocol predefined rule.

18. The method of determining PRACH resources according to claim 3, wherein, The calculating the radio network temporary identifier (RNTI) comprises: calculating the radio network temporary identifier (RNTI) according to the identifier (id) of the uplink initial BWP; or calculating the radio network temporary identifier (RNTI) according to the RO frequency multiplexing parameter of the terminal and the identifier (id) of the uplink initial BWP; or calculating the radio network temporary identifier (RNTI) according to the total number of the uplink initial BWP. 19.A method for determining PRACH resource, characterized in that, comprises: The network device sends downlink signaling to the terminal, and the downlink signaling is used for the terminal to determine the physical random access channel (PRACH) resource for the first transmission; The terminal is a RedCap terminal; The determining the physical random access channel (PRACH) resource for the first transmission comprises: determining an available RO resource corresponding to the first transmission in the RO resource in an initial uplink bandwidth BWP; the determining the available RO resource corresponding to the first transmission in the RO resource in the initial uplink BWP comprises: the terminal acquiring a third configuration parameter in a system message, and determining the available RO resource corresponding to the first transmission from the RO resource in the initial uplink BWP according to the third configuration parameter; or, in the case where the third configuration parameter is not included in the system message, determining the RO resource in the initial uplink BWP as the available RO resource corresponding to the first transmission; wherein the third configuration parameter is used to indicate the available RO resource. The first transmission contains a new feature of Rel-17, and the first transmission comprises at least one of the following features: 4-step random access procedure; 2-step random access procedure; Random access procedure with message 3 (Msg3) repetition transmission; Random access small data transmission (SDT); Random access procedure for a first type of terminal; The PRACH resource comprises at least one of the following: Random access occasion (RO); Pilot sequence (preamble).

20. The method of determining PRACH resources according to claim 19, wherein, The determining the PRACH resource for the first transmission comprises at least one of the following: Determining the RO resource in the initial uplink BWP; Determining a preamble set associated with the first transmission in the available RO resource.

21. The method of determining PRACH resources according to claim 20, wherein, The first configuration information is carried in the downlink signaling, and the first configuration information is used to indicate the initial uplink bandwidth BWP; The initial uplink BWP is a dedicated initial uplink BWP, or is a first initial uplink BWP. The first initial uplink BWP is an initial uplink BWP defined in NR Rel-15 / 16.

22. The method of determining PRACH resources according to claim 20, wherein, The third configuration parameter is carried in the downlink signaling, and the third configuration parameter is used to indicate the available RO resource.

23. The method of determining PRACH resources according to claim 22, wherein, The third configuration parameter is a first mask, and the interpretation manner of the first mask is determined according to the mapping relationship between the RO and the SSB.

24. The method of determining PRACH resources according to claim 23, wherein, In the case where one SSB is associated with multiple ROs in one mapping period, the interpretation manner of the first mask comprises at least one of the following: Interpreted according to a first mask table; Interpreted according to a bit map form; Interpreted according to a dedicated mask table; The first mask table is a mask table defined in NR Rel-15 / 16; The dedicated mask table reuses part of the code words of the mask table defined in NR Rel-15 / 16, and the downlink signaling further comprises second configuration information, the second configuration information is used to configure the remaining code words in the mask table, and the code words configured in the second configuration information indicate the start number of the available RO, and the number of consecutive available ROs or the last available RO number.

25. The method of claim 23, wherein, In a case that one RO maps at least one SSB in one mapping period, the first mask is used to indicate whether the ROs associated with the same SSB in multiple continuous mapping periods are available ROs.

26. The method of determining PRACH resources according to claim 25, wherein, The effective range of the first mask does not exceed a PRACH associated period, and a starting position of the first mask is the same as a starting boundary of the PRACH associated period.

27. The method of determining PRACH resources according to claim 23, wherein, The third configuration parameter further includes a second mask, and the second mask is used to indicate that part of the available RO resources is used for a random access procedure of the first type of terminal.

28. The method of determining PRACH resources according to claim 19 or 27, wherein, The random access procedure of the first type of terminal includes at least one of the following: A random access procedure of a message 3 (Msg3) repetition transmission of the first type of terminal; A small data transmission (SDT) based on random access of the first type of terminal; A 4-step random access procedure of the first type of terminal; A 2-step random access procedure of the first type of terminal.

29. The method of determining PRACH resources according to claim 23, wherein, The multiple first masks correspond to multiple different Msg3 repetition numbers or different coverage levels.

30. The method of claim 22, wherein, The third configuration parameter is a PRACH period and an offset corresponding to the available RO.

31. The method of determining PRACH resources according to claim 20, wherein, The downlink signaling carries a correspondence between a coverage level and a mask.

32. The method of determining PRACH resources according to claim 20, wherein, The downlink signaling carries a number of preambles of a contention-based random access of each feature.

33. The method of determining PRACH resources according to claim 21, wherein, The downlink signaling further carries a mask of each feature.

34. A PRACH resource determination apparatus, comprising: Comprise: A determination unit is configured to determine a physical random access channel (PRACH) resource used for a first transmission according to downlink signaling configuration or a protocol predefined rule, and the terminal is a reduced capability (RedCap) terminal. The determination unit is specifically configured to determine available RO resources corresponding to the first transmission in RO resources in an uplink initial bandwidth part (BWP), and the determination of the available RO resources corresponding to the first transmission in the RO resources in the uplink initial BWP includes that the terminal acquires a third configuration parameter in a system message, and determines the available RO resources corresponding to the first transmission from the RO resources in the uplink initial BWP according to the third configuration parameter, or in a case that the third configuration parameter is not included in the system message, determines that the RO resources in the uplink initial BWP are the available RO resources corresponding to the first transmission, wherein the third configuration parameter is used to indicate the available RO resources. The first transmission includes a new feature of Rel-17, and the first transmission includes at least one of the following features: A 4-step random access procedure; A 2-step random access procedure; A random access procedure of a message 3 (Msg3) repetition transmission; A small data transmission (SDT) based on random access; A random access procedure of the first type of terminal; The PRACH resource includes at least one of the following: A random access occasion (RO); A pilot sequence (preamble). 35.The PRACH resource determination apparatus of claim 34, wherein, The determination of the PRACH resource used for the first transmission includes at least one of the following: The determination of the RO resources in the uplink initial BWP; The determination of a preamble set associated with the first transmission in the available RO resources. 36.The PRACH resource determination apparatus of claim 34, wherein, Further comprise: The processing unit is configured to transmit a message 1 (Msg1) using the PRACH resource, and calculate a radio network temporary identifier (RNTI). 37.The PRACH resource determination apparatus of claim 35, wherein, Before determining the RO resource in the uplink initial bandwidth part (BWP), the method further includes: Determining the uplink initial bandwidth part (BWP) according to a system message or a protocol predefined rule. The uplink initial BWP is a dedicated uplink initial BWP or a multiplexed first uplink initial BWP. The first uplink initial BWP is an uplink initial BWP defined in NR Rel-15 / 16. 38.The PRACH resource determination apparatus of claim 37, wherein, The method further includes: In a case where the uplink initial BWP is multiplexed with the first uplink initial BWP, the terminal multiplexes an RO resource in the first uplink initial BWP and a first configuration parameter corresponding to the RO resource in the first uplink initial BWP; or In a case where the uplink initial BWP is a dedicated uplink initial BWP and the dedicated uplink initial BWP overlaps with the first uplink initial BWP in a frequency domain, the terminal takes an RO resource of the first uplink initial BWP in a frequency domain overlap region as an RO resource in the dedicated uplink initial BWP, and multiplexes a configuration result of the RO resource of the first uplink initial BWP; or In a case where the uplink initial BWP is a dedicated uplink initial BWP, the terminal determines an RO resource in the dedicated uplink initial BWP according to a system message configuration, calculates a second configuration parameter of the RO resource in the dedicated uplink initial BWP according to a first configuration parameter of the RO resource of the first uplink initial BWP, and ensures that a synchronization signal block (SSB) associated with the RO of the first uplink initial BWP is the same as a SSB associated with the RO of the dedicated uplink initial BWP on a same time resource. The RO resource in the first uplink initial BWP includes at least one of the following: an RO resource of a 4-step random access procedure, and an RO resource of a 2-step random access procedure. The first configuration parameter or the second configuration parameter includes a mapping relationship between a synchronization signal block (SSB) and an RO.

39. The apparatus for determining PRACH resources of claim 34, wherein, The third configuration parameter is a first mask, and a reading manner of the first mask is determined according to the mapping relationship between the RO and the SSB. 40.The PRACH resource determination apparatus of claim 39, wherein, The third configuration parameter further includes a second mask, and the second mask is used to indicate that part of the RO resources in the available RO resources are used for the random access procedure of the first type terminal. 41.The PRACH resource determination apparatus of claim 34, wherein, The third configuration parameter is a PRACH period and an offset corresponding to an available RO. The third configuration parameter is a PRACH period and an offset corresponding to an available RO. The third configuration parameter is a PRACH period and an offset corresponding to an available RO.

42. The apparatus for determining PRACH resources of claim 35, wherein, The method further includes: Determining a coverage level of the terminal according to a reference signal received power (RSRP) of a downlink signal. Determining the available RO resource corresponding to the first transmission according to a mask corresponding to the coverage level. The third configuration parameter is a PRACH period and an offset corresponding to an available RO. The correspondence between the coverage level and the mask is predefined by a system message or a protocol. 43.The PRACH resource determination apparatus of claim 38, wherein, In a case where the uplink initial BWP is a dedicated uplink initial BWP, and the dedicated uplink initial BWP exists in frequency domain overlap with the first uplink initial BWP and multiplexes the RO resource of the first uplink initial BWP, the determining of the available RO resource corresponding to the first transmission in the RO resource in the uplink initial BWP comprises: According to a frequency relative offset relationship between the first uplink initial BWP and the dedicated uplink initial BWP predefined by a protocol, and the RO resource of the first uplink initial BWP, the available RO resource of the dedicated uplink initial BWP is determined; or, The intersection of the association result of the RO of the first uplink initial BWP and the SSB and the RO in the dedicated uplink initial BWP is taken, the mask corresponding to each SSB is determined, the intersection of all SSB masks is taken as the mask of the dedicated uplink initial BWP, and the mask of the dedicated uplink initial BWP is applied to the RO associated with all SSBs to determine the available RO.

44. The apparatus for determining PRACH resources of claim 35, wherein, The determining of the preamble set associated with the first transmission in the available RO resource comprises: According to the number of preambles of the contention-based random access of each feature indicated in the system message and the preamble division order of each feature predefined by a protocol, the number of preambles of the contention-based random access of each feature supported by the available RO resource is determined, and the preamble set associated with the first transmission is obtained. 45.The PRACH resource determination apparatus of claim 36, wherein, The calculation of the radio network temporary identifier (RNTI) comprises: According to the identifier (id) of the uplink initial BWP, the radio network temporary identifier (RNTI) is calculated; or, According to the RO frequency multiplexing parameter of the terminal and the identifier (id) of the uplink initial BWP, the radio network temporary identifier (RNTI) is calculated; or According to the total number of the uplink initial BWPs, the radio network temporary identifier (RNTI) is calculated. 46.A method for determining PRACH resource, the method comprising: Comprise: The sending unit is configured to send downlink signaling to the terminal, wherein the downlink signaling is used by the terminal to determine the physical random access channel (PRACH) resource used for the first transmission. The terminal is a RedCap terminal. The determining of the physical random access channel (PRACH) resource used for the first transmission comprises determining the available RO resource corresponding to the first transmission in the RO resource in the uplink initial partial bandwidth (BWP); the determining of the available RO resource corresponding to the first transmission in the RO resource in the uplink initial BWP comprises: the terminal acquires a third configuration parameter in a system message, and determines the available RO resource corresponding to the first transmission from the RO resource in the uplink initial BWP according to the third configuration parameter; or in a case where the third configuration parameter is not in the system message, the RO resource in the uplink initial BWP is determined as the available RO resource corresponding to the first transmission; wherein the third configuration parameter is used to indicate the available RO resource. The first transmission contains a new feature of Rel-17, and the first transmission includes at least one of the following features: 4-step random access procedure; 2-step random access procedure; Random access procedure with Msg3 repetition transmission; Random access small data transmission (SDT); Random access procedure for a first type of terminal; The PRACH resource includes at least one of the following: Random access occasion (RO); Pilot sequence (preamble).

47. A terminal, characterized by A processor, a memory, and a program or instruction stored on the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the PRACH resource determination method according to any one of claims 1 to 18.

48. A network-side device, comprising: A processor, a memory, and a program or instruction stored on the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the PRACH resource determination method according to any one of claims 19 to 33.

49. A readable storage medium, characterized by, A readable storage medium stores a program or instruction, wherein the program or instruction, when executed by a processor, implements the steps of the PRACH resource determination method according to any one of claims 1 to 18, or implements the steps of the PRACH resource determination method according to any one of claims 19 to 33.

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