Threshold configuration method, characteristic selection method and communication equipment

Abstract

The embodiment of the invention provides a threshold configuration method, a characteristic selection method and communication equipment, and relates to the field of communication. The network side equipment can reasonably set the threshold for the repetition times of each MSG1 according to the resource configuration condition on the BWP through the threshold configuration method. And the user terminal can reasonably select the random access characteristic according to the measured link quality parameter and the threshold value through a characteristic selection method. The threshold configuration method is applied to a network device, and the method comprises: sending a first threshold and a second threshold, the first threshold being used for distinguishing whether to perform MSG1 repetition, and the second threshold being used for distinguishing the number of MSG1 repetition times.

Description

A threshold configuration method, characteristic selection method and communication equipment

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on August 10, 2023, with application number 202311007079.6 and invention name “A threshold configuration method, feature selection method and communication equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present application relate to the field of communications, and in particular to a threshold configuration method, a feature selection method, and a communications device. Background Art

[0003] Random access is a necessary process for establishing a wireless link between a user terminal (UE) and a network device in a communication system. Network devices refer to access network equipment, such as base stations. Through random access, a UE can establish a wireless link with a network device. Before initiating random access with a network device, the UE first receives configuration information broadcast by the network device and completes initialization based on this information. This configuration information may include thresholds for parameters representing link quality. This threshold allows the UE to determine the number of times MSG1 (Message 1) is repeated during the random access process.

[0004] The number of MSG1 repetitions is one of the important characteristics of the random access process. The user terminal can determine the number of MSG1 repetitions based on the measured link quality parameters and the threshold value. It then selects resources based on the determined number of MSG1 repetitions and other possible random access characteristics.

[0005] The resources required for the random access process are usually configured in the BWP (Bandwidth Part), and there may be multiple resource configurations on the BWP. Therefore, the network-side equipment needs to reasonably set a threshold for the number of MSG1 repetitions based on the resource configuration on the BWP. The user terminal needs to reasonably select the random access characteristics based on the measured link quality parameters and the threshold value.

[0006] Summary of the Invention

[0007] Embodiments of the present application provide a threshold configuration method, a feature selection method, and a communications device. Using the threshold configuration method, a network device can properly set a threshold for each MSG1 repetition count based on resource configuration on a BWP. Using the feature selection method, a user terminal can properly select a random access feature based on measured link quality parameters and threshold values.

[0008] In a first aspect, a threshold configuration method is provided, which is applied to a network device. The method includes sending a first threshold and a second threshold, wherein the first threshold is used to distinguish whether MSG1 is repeated, and the second threshold is used to distinguish the number of MSG1 repetitions.

[0009] In one possible implementation, the first threshold and the second threshold are configured via a first configuration parameter. The first configuration parameter includes corresponding thresholds configured for different MSG1 repetition numbers, wherein the first threshold is a threshold corresponding to a lowest number of repetitions or a lowest coverage level number of repetitions among different MSG1 repetition numbers. The second threshold is a threshold for repetition numbers other than the lowest number of repetitions among different MSG1 repetition numbers.

[0010] In a possible implementation, the first threshold is configured by a second configuration parameter, and the second threshold is configured by a third configuration parameter.

[0011] In a possible implementation, the first threshold is configured only when a non-MSG1 repeated RA resource set is available.

[0012] In a possible implementation, when the configured number of repetitions of MSG1 is n, the second threshold number is n-1.

[0013] In a second aspect, a threshold configuration method is provided, which is applied to a network device. The method further includes: sending a third threshold, where the third threshold is a corresponding threshold configured for different MSG1 repetition times.

[0014] In a possible implementation, when the configured number of repetitions of MSG1 is n, the number of the third threshold is n.

[0015] In a third aspect, a feature selection method is provided, applied to a terminal device, comprising: receiving a first threshold and a second threshold, determining whether to repeat MSG1 based on the first threshold, and determining the number of repetitions of MSG1 based on the second threshold.

[0016] In a fourth aspect, an electronic device is provided, comprising one or more processors and one or more memories. The one or more memories are coupled to the one or more processors, and the one or more memories store a computer program. When the one or more processors execute the computer program, the electronic device performs the threshold configuration method provided in the embodiments of the present application.

[0017] In a fifth aspect, a computer-readable storage medium is provided, which includes a computer program. When the computer instructs the program, the threshold configuration method provided in the embodiment of the present application is executed.

[0018] In a sixth aspect, a computer program product is provided, which includes instructions. When the computer program product runs on a computer, the computer can execute the threshold configuration method provided in the embodiment of the present application according to the instructions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic diagram of a four-step random access process;

[0020] FIG2 is a schematic diagram of a resource configuration provided in an embodiment of the present application;

[0021] FIG3 is a schematic diagram of a communication system provided in an embodiment of the present application;

[0022] FIG4 is a flowchart of a first threshold configuration method provided in an embodiment of the present application;

[0023] FIG5 is a flow chart of a first characteristic selection method provided in an embodiment of the present application;

[0024] FIG6 is a flowchart of a resource set selection method provided in an embodiment of the present application;

[0025] FIG7 is a schematic diagram of a scenario of resource set selection provided in an embodiment of the present application;

[0026] FIG8 is a schematic diagram of selection results of a resource set selection method provided in an embodiment of the present application;

[0027] FIG9 is a structural diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0028] In the embodiments of the present application, the terms "first," "second," and "third" are used to distinguish different objects rather than to define a specific order. In addition, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way.

[0029] The following first introduces the application scenarios of the threshold configuration method and feature selection method provided in the embodiments of the present application.

[0030] In a communications system, a user equipment (UE) initiates a random access (RA) to a network device (such as a base station) to achieve uplink synchronization or obtain an UL grant (uplink scheduling grant). Uplink synchronization refers to the synchronization of uplink signals sent by UEs at different locations in the same cell using the same timeslot when they arrive at the network device. The UL grant determines the format of the UE's uplink signal, which can include resource allocation information, transmission format, and more.

[0031] After completing random access, the user terminal will obtain uplink synchronization or UL grant.

[0032] Based on the service triggering method, random access can be divided into contention-based random access (CBRA) and non-contention-free random access (CFRA). In contention-based random access, different user terminals share a preamble pool, so different user terminals may select the same preamble, resulting in contention between different user terminals. In non-contention-based random access, the preamble is allocated to each user terminal by the network device, so there is no contention between different user terminals. Generally speaking, non-contention-based random access is suitable for scenarios such as handover, receiving downlink data in the RRC (Radio Resource Control) connection state, and positioning in the RRC connection state. Contention-based random access is suitable for scenarios such as the initial RRC connection process and the RRC connection re-establishment process. Because contention-based random access requires time to resolve contention, the access latency is higher than that of non-contention-based random access, and the access success rate is lower than that of non-contention-based random access.

[0033] It should be noted that the random access in the embodiment of the present application can be either the above-mentioned contention-based random access or the non-contention-based random access, which is not specifically limited here.

[0034] Depending on the execution process, random access can be divided into 4-step random access (4-step RA) and 2-step random access (2-step RA). It should be understood that 4-step random access completes the random access process through 4 steps, while 2-step random access completes the random access process through 2 steps.

[0035] It should be noted that the random access provided in the embodiment of the present application can be either 4-step random access or 2-step random access, which is not specifically limited here.

[0036] The following takes 4-step random access as an example to illustrate the random access process.

[0037] Please refer to Figure 1, which is a schematic diagram of a four-step random access process. As shown in Figure 1, the process may include the following steps.

[0038] S101. A user terminal sends MSG1 (message 1) to a network device.

[0039] MSG1 may include a preamble code (preamble) for initiating a random access request to a network-side device.

[0040] S102 : In response to receiving MSG1 , the network-side device sends MSG2 (message 2) to the user terminal.

[0041] MSG2 may also be referred to as a random access response (Random Access Response), and may include scheduling information of MSG3 (message 3). Specifically, MSG2 may be used to instruct the UE on how to send MSG3.

[0042] S103 : In response to receiving MSG2 , the user terminal sends MSG3 to the network side device.

[0043] MSG3 may carry an RRC connection establishment message (RRC Connection Request), an RRC connection re-establishment message (RRC Connection Re-establishment Request), and the like.

[0044] S104 . In response to receiving MSG3 , the network-side device sends MSG4 (message 4 ) to the user terminal.

[0045] MSG4 may include a response message determined by the network side device to MSG3, and the response message may include relevant information for resolving contention between user terminals.

[0046] Through the above steps S101 to S104, the user terminal can complete four steps of random access.

[0047] It should be noted that before the user terminal initiates random access to the network device, it will first receive the configuration information broadcast by the network device and complete initialization based on the configuration information. This configuration information may include SSB (PSS (Primary Synchronization Signal), SSS (Secondary Synchronization Signal), PBCH (Physical Broadcast Channel)) information, etc. This configuration information can be used to align the frequency and time between the user terminal and the network device, and can also be used by the user terminal to obtain the parameters required for random access.

[0048] In the embodiment of the present application, the parameters required for random access may also be referred to as random access parameters. The random access parameters may include a threshold. The threshold may be used by the user terminal to determine the number of MSG1 repetitions (MSG1 repetitions) during the random access process. Exemplarily, the threshold may be a link quality threshold, such as an RSRP (Reference Signal Received Power) threshold, an RSSI (Received Signal Strengthen Indicator) threshold, an SINR (Signal to Interference & Noise Ratio) threshold, etc. For ease of explanation, in the following embodiments, the threshold in the configuration information broadcast by the network-side device is referred to as a threshold configured by the network-side device, and the RSRP threshold is used as an example for explanation, and no further details will be given later.

[0049] The MSG1 repetition count is a random access feature. The process of a user terminal sending MSG1 to a network device involves multiple attempts. The MSG1 repetition count refers to the number of times MSG1 is repeated in each attempt. In NR (New Radio), the MSG1 repetition count can be 2, 4, 8, and so on. A MSG1 repetition count of 2 can be written as MSG1 repetition 2, a MSG1 repetition count of 4 can be written as MSG1 repetition 4, and a MSG1 repetition count of 8 can be written as MSG1 repetition 8.

[0050] During user terminal initialization, the user terminal determines the number of MSG1 repetitions based on the relationship between the currently measured RSRP and the thresholds. For example, the MSG1 repetitions include MSG1 repetition 2 and MSG1 repetition 4. The threshold corresponding to MSG1 repetition 2 is A, and the threshold corresponding to MSG1 repetition 4 is B. The user terminal's currently measured RSRP is C, where A is greater than B. In this scenario, when C is less than A and greater than B, the user terminal can determine the number of MSG1 repetitions to be MSG1 repetition 2. When C is less than B, the user terminal can determine the number of MSG1 repetitions to be MSG1 repetition 4.

[0051] When the user terminal is initialized, the user terminal selects a resource associated with the MSG1 repetition number characteristic according to the determined MSG1 repetition number, and performs a subsequent random access process through the determined resource.

[0052] It should be noted that the resources required during the random access process are usually configured on a BWP (Bandwidth Part). Before selecting resources, the user terminal needs to first determine the BWP, and then select the resources configured on the BWP based on the MSG1 repetition number determined by the threshold and the currently measured RSRP, as well as other possible random access features. Among them, other possible random access features may include MSG3 repetition number, SDT (Small Data Transmission), RedCap (Reduced Capability), Slice, etc. A BWP is a continuous section of RBs (Resource Blocks) on a given carrier. Because the bandwidth covered by NR (New Radio) is relatively large, the network-side equipment can configure different BWPs for different user terminals as the corresponding user terminal's working bandwidth to reduce the power consumption of the user terminal.

[0053] Please refer to Figure 2. The resource configuration on the BWP may be the following three situations.

[0054] Case 1: Only duplicate resources of MSG1 are configured on the BWP.

[0055] It should be understood that the resources for MSG1 repetition may include resources with different MSG1 repetitions. For example, the resource set configured by the network device for the random access process of the terminal includes at least n resource sets with MSG1 repetitions, where n is an integer greater than or equal to 1. That is, not only one MSG1 repetition resource set but also two or more MSG1 repetition resources may be configured, so that the terminal selects the MSG1 repetition to initiate random access based on the configured resource set and the threshold corresponding to the n MSG1 repetitions.

[0056] For example, taking the case where the number of MSG1 repetitions includes 2, 4, and 8, as shown in Figure 2, in case 1, the BWP can be configured with resources for MSG1 repetition 2, MSG1 repetition 4, and MSG1 repetition 8. Case 2: The BWP is configured with both MSG1 repetition resources and non-MSG1 repetition resources.

[0057] Among them, non-MSG1 repeated resources are resources of other random access characteristics that may exist in the above embodiment. Non-MSG1 repeated resources may include MSG3 repeated resources, SDT resources, RedCap resources, Slice resources, etc.

[0058] As shown in FIG2 , in case 2, resources of MSG1 repetition 2, resources of MSG1 repetition 4, resources of MSG1 repetition 8, and resources other than MSG1 repetition can be configured on the BWP.

[0059] In this application, resources that are repeated in MSG1 may be replaced by resources used for MSG1 repetition or MSG1 repetition resources. Resources that are not repeated in MSG1 may be replaced by resources used for non-MSG1 repetition or non-MSG1 repetition resources. Resources that are repeated in MSG3 may be replaced by resources used for MSG3 repetition or MSG3 repetition resources, without limitation.

[0060] Case 3: Only resources that are not duplicated in MSG1 are configured on the BWP.

[0061] As shown in FIG2 , in case 3, only resources that are not repeated in MSG1 can be configured on the BWP.

[0062] On this basis, an embodiment of the present application provides a threshold configuration method: in case 1, the threshold configured by the network-side device should be able to distinguish different MSG1 repetition times. In case 2, the threshold in the configuration information broadcast by the network-side device should be able to distinguish between MSG1 repetition times and non-MSG1 repetition times. The network side can configure a threshold for the user terminal based on the resource configuration on the BWP, so that the user terminal can better select the resources configured on the BWP according to the random access characteristics determined by the threshold, thereby improving the success rate of random access. Correspondingly, an embodiment of the present application also provides a feature selection method, which is applied to the user terminal and can determine the random access characteristics according to the threshold configured by the network-side device, so that the user terminal can better select the resources configured on the BWP according to the determined random access characteristics, thereby improving the success rate of random access.

[0063] The threshold configuration method and feature selection method provided in the embodiments of the present application can be applicable to a variety of communication systems. Exemplarily, the communication system can be a third generation partnership project (3GPP) communication system, a fourth generation (4G) long term evolution (LTE) system, a fifth generation (5G) new radio (NR) system, a vehicle to everything (V2X) system, a system of LTE and NR hybrid networking, or a device-to-device (D2D) system, a machine to machine (M2M) communication system, an Internet of Things (IoT), and other next generation communication systems.

[0064] Among them, the above-mentioned communication system applicable to the present application is only an example, and the communication system applicable to the present application is not limited to this. It is uniformly described here and will not be repeated below.

[0065] Please refer to FIG3 , which is a schematic diagram of a communication system provided in an embodiment of the present application. The communication system includes at least one network-side device 301 and at least one user terminal 302 .

[0066] Optionally, user terminals 302 and user terminals 302, and network devices 301 and network devices 301, can communicate with each other via wired or wireless means. Figure 3 is merely a schematic diagram. The communication system may also include other network devices 301, such as wireless relay devices, wireless backhaul devices, core network devices, etc., which are not shown in Figure 3. The number of network devices 301 and user terminals 302 in Figure 3 is merely an example. The communication system may include more or fewer network devices 301 or user terminals 302 than shown in Figure 3.

[0067] Optionally, the user terminal 302 may refer to a user-side device with wireless transceiver functions. The user terminal 302 may also be referred to as user equipment (UE), user terminal equipment, access user terminal, user unit, user station, mobile station (MS), remote station, remote user terminal, mobile user terminal (MT), user terminal, wireless communication device, user agent or user device, etc. The user terminal may be, for example, a user terminal in IoT, V2X, D2D, M2M, 5G network, or a future evolved public land mobile network (PLMN). The user terminal 302 may be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; it may also be deployed on water (such as a ship, etc.); it may also be deployed in the air (such as an airplane, balloon, and satellite, etc.).

[0068] Exemplarily, the user terminal 302 can be a drone, an IoT device (e.g., a sensor, an electricity meter, a water meter, etc.), a V2X device, a station (ST) in a wireless local area network (WLAN), a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device (also referred to as a wearable smart device), a tablet computer or a computer with wireless transceiver capabilities, a virtual reality (VR) user terminal 302, a wireless user terminal in industrial control, a wireless user terminal in self-driving, a wireless user terminal in remote medical, a wireless user terminal in a smart grid, a wireless user terminal in transportation safety, a wireless user terminal in a smart city, a smart home, or a similar device. The user terminal 302 may be a wireless user terminal in a home, a vehicle-mounted user terminal, a vehicle with vehicle-to-vehicle (V2V) communication capability, an intelligent connected car, a drone with unmanned aerial vehicle (UAV) to unmanned aerial vehicle (UAV to UAV, U2U) communication capability, and the like. The user terminal 302 may be mobile or fixed, and this application does not specifically limit this.

[0069] Optionally, the network side device 301 is a device that connects the user terminal 302 to the wireless network, which can be a next generation node B (gNodeB or gNB) in a 5G system; or a transmission reception point (TRP); or a base station in a future evolved PLMN; or a broadband network gateway (BNG), an aggregation switch or a non-3GPP access device; or a wireless controller in a cloud radio access network (CRAN); or an access point (AP) in a WiFi system; or a wireless relay node or a wireless backhaul node; or a device that implements base station functions in IoT, V2X, D2D, or M2M, and the embodiments of the present application are not specifically limited to this. For example, the base station in the embodiments of the present application may include various forms of base stations, such as: macro base stations, micro base stations (also known as small stations), relay stations, access points, etc., and the embodiments of the present application are not specifically limited to this.

[0070] In some possible scenarios, the network side device 301 may also be a module or unit that can implement some or all of the functions of the base station. For example, the network side device 301 may be a centralized unit (CU), a distributed unit (DU), a CU and a DU, a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and DU may be configured separately or included in the same network element, such as a baseband unit (BBU). The RU may be included in a radio frequency device or radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0071] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, the network side device 301 may be a network side device or a module of a network side device in an open radio access network (open RAN, ORAN) system. In the ORAN system, CU may also be referred to as open (open, O)-CU, DU may also be referred to as O-DU, CU-CP may also be referred to as O-CU-CP, CU-UP may also be referred to as O-CU-UP, and RU may also be referred to as O-RU. Any of the CU (or CU-CP, CU-UP), DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0072] It should be noted that the communication system described in the embodiment of the present application is intended to more clearly illustrate the technical solution of the embodiment of the present application, and does not constitute a limitation on the technical solution provided in the embodiment of the present application. Ordinary technicians in this field can know that with the evolution of network architecture and the emergence of new business scenarios, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

[0073] Based on the above description of the application scenarios and applicable communication systems of this application, the following describes the threshold configuration method and feature selection method provided in the embodiments of this application. The embodiments of this application provide two threshold configuration methods, both of which are applied to network-side devices. For ease of description, these two threshold configuration methods may be referred to as the first threshold configuration method and the second threshold configuration method, respectively. The following first describes the first threshold configuration method.

[0074] The first threshold configuration method can be described as: configuring a first threshold and a second threshold, wherein the first threshold is used to distinguish MSG1 repetitions or can be alternatively described as the first threshold is used to distinguish whether MSG1 repetitions are performed or can be alternatively described as the first threshold is used to determine whether MSG1 repetitions are selected, and the second threshold is used to distinguish the number of MSG1 repetitions.

[0075] Optionally, the second threshold may be called rsrp-ThresholdMsg1-RepetitionNumX.

[0076] In one implementation, the first threshold and the second threshold can be configured via a configuration parameter that configures a threshold corresponding to the number of MSG1 repetitions. The threshold corresponding to the minimum number of repetitions or the minimum coverage level repetitions configured by the configuration parameter can be the first threshold; the threshold corresponding to the number of MSG1 repetitions other than the minimum number of repetitions can be the second threshold. In this application, there may be multiple different numbers of MSG1 repetitions. For example, if the number of MSG1 repetitions is n, where n is an integer greater than 1, the smallest number of MSG1 repetitions among the multiple different numbers of MSG1 repetitions can be referred to as the minimum number of repetitions or the minimum coverage level repetitions. For example, if the number of MSG1 repetitions includes 2, 4, and 8, the number of repetitions 2 can be referred to as the minimum number of repetitions, while the numbers 4 and 8 can be referred to as the numbers of repetitions other than the minimum number of repetitions. Specifically, in this implementation, configuring the threshold corresponding to the number of MSG1 repetitions in the configuration parameters may include: if only MSG1 repetition resources are configured, or in other words, only MSG1 repetition resources are configured on the BWP, configuring a corresponding second threshold for each MSG1 repetition number other than the minimum repetition number or the minimum coverage level repetition number. If both MSG1 repetition resources and non-MSG1 repetition resources are configured, or in other words, both MSG1 repetition resources and non-MSG1 repetition resources are configured on the BWP, configuring a corresponding second threshold for each different number of MSG1 repetitions, wherein the second threshold configured for the minimum repetition number or the minimum coverage level repetition number is the first threshold.

[0077] In this application, the configuration parameters may also be referred to as configuration information, and the configuration information may be rach-ConfigDedicated.

[0078] Among them, in addition to the configuration threshold, the configuration information can be used to configure a random access resource set (Random Access resource set) (or referred to as resource set / random access resource) for the terminal. The random access resource set can be used for the random access process, and the terminal can select an available resource set from the resource set configured by the network device for the random access process to initiate random access.

[0079] For example, if n MSG1 repetitions are configured, the order of the different MSG1 repetitions, from lowest to highest, is A1, A2, ..., An. If only MSG1 repetition resources are configured, or in other words, only MSG1 repetition resources are configured on the BWP, the network device can configure corresponding thresholds for A2 through An using a single configuration parameter. This threshold is the aforementioned second threshold. If both MSG1 repetition resources and non-MSG1 repetition resources are configured, the network device can configure corresponding second thresholds for A1 through An. The second threshold configured for A1 is the first threshold.

[0080] That is, when only MSG1 repetition resources are configured on the BWP, the network-side device can configure only n-1 second thresholds. These n-1 second thresholds correspond to the thresholds A2 through An, excluding the minimum number of repetitions A1. When both MSG1 repetition resources and non-MSG1 repetition resources are configured on the BWP, the network-side device can configure one first threshold and n-1 second thresholds. The n-1 second thresholds correspond to the thresholds A2 through An, and the one first threshold corresponds to A1 or is used to distinguish whether MSG1 repetition is to be performed.

[0081] It should be understood that in this implementation, the network-side device configures the first threshold only when both MSG1 duplicate resources and non-MSG1 duplicate resources are configured on the BWP. In this case, the first threshold configuration method can be stated as follows: when both MSG1 duplicate resources and non-MSG1 duplicate resources are configured on the BWP, the first threshold and the second threshold are configured. When only MSG1 duplicate resources are configured on the BWP, the first threshold configuration method can be stated as follows: the first threshold is not configured, and only the second threshold is configured.

[0082] The specific implementation process of this implementation method can refer to the embodiment corresponding to Figure 4 below.

[0083] In another implementation, the first threshold and the second threshold are configured using two different configuration parameters. The first configuration parameter configures the first threshold, which is used to distinguish whether MSG1 repetition is performed, and further used to distinguish whether MSG1 repetition is performed when MSG1 repetition resources and non-MSG1 repetition resources are configured. The second configuration parameter configures the second threshold, which is used to distinguish the number of MSG1 repetitions. When the configured number of MSG1 repetitions is n, the second threshold number is n-1.

[0084] Specifically, in this other implementation, the first threshold and the second threshold are configured using two different configuration parameters, respectively, and may include: if only MSG1 repeated resources are configured, or in other words, only MSG1 repeated resources are configured on the BWP, respectively configuring a corresponding second threshold for each MSG1 repetition number other than the minimum repetition number or the minimum coverage level repetition number; if both MSG1 repeated resources and non-MSG1 repeated resources are configured, or in other words, configuring both MSG1 repeated resources and non-MSG1 repeated resources on the BWP, respectively configuring a corresponding second threshold for each different MSG1 repetition number, and configuring the corresponding first threshold for selecting whether to perform MSG1 repetition.

[0085] It is understandable that when only MSG1 repetition resources are configured on the BWP, the network-side device can also configure n-1 second thresholds and 1 first threshold, where the n-1 second thresholds correspond to the thresholds A2 to An. In this scenario, the user terminal will only use the n-1 second thresholds when performing feature selection based on the thresholds and measured RSRP, and will not use the first threshold. Therefore, the first threshold can be any threshold and is not specifically limited here.

[0086] In another implementation, the first threshold is configured only when a non-MSG1 duplicate RA resource set is available. That is, the first threshold is configured when non-MSG1 duplicate resources are configured or when non-MSG1 duplicate resources are configured on a BWP and the non-MSG1 duplicate resources are available. Specifically, the first threshold is used to determine whether to select MSG1 duplication.

[0087] Alternatively, when only non-MSG1 duplicate resources are configured on the BWP, the network-side device may not configure thresholds, such as not configuring the first threshold and / or the second threshold. Specifically, when only non-MSG1 duplicate resources are configured on the BWP and the RA resource set in the non-MSG1 duplicate resources is available, the first threshold may be configured, but the second threshold may not be configured. When only non-MSG1 duplicate resources are configured on the BWP and the RA resource set in the non-MSG1 duplicate resources is unavailable, the first threshold and the second threshold may not be configured.

[0088] It should be noted that a second threshold must be met for each MSG1 repetition count. This second threshold enables the user terminal to distinguish whether to select that MSG1 repetition count. For example, a threshold T1 must be met for MSG1 repetition 4. The user terminal can determine whether to select MSG1 repetition 4 based on this threshold and the measured RSRP. For example, if the measured RSRP is less than T1, MSG1 repetition 4 may be selected; if the measured RSRP is greater than T1, MSG1 repetition 4 is not selected.

[0089] Different MSG1 repetitions refer to MSG1 repetitions with different repetition times. For example, the repetition time of MSG1 repetition 2 is 2, and the repetition time of MSG1 repetition 4 is 4. Therefore, MSG1 repetition 2 and MSG1 repetition 4 are different MSG1 repetition times.

[0090] The following describes the first threshold configuration method and its corresponding first feature selection method provided in embodiments of the present application, respectively, in conjunction with Figures 4 and 5. Figure 4 illustrates a specific implementation of the first threshold configuration method provided in embodiments of the present application. It should be understood that this specific implementation is merely exemplary and provides one possible implementation of the first threshold configuration method. Therefore, this specific implementation should not be construed as limiting the first threshold configuration method provided in embodiments of the present application.

[0091] Please refer to Figure 4, which is a flow chart of a first threshold configuration method provided in an embodiment of the present application. As shown in Figure 4, the process may include the following steps:

[0092] S401. Determine the resource configuration on the BWP. If only MSG1 duplicate resources are configured or only MSG1 duplicate resources are configured on the BWP, execute S402a. If both MSG1 duplicate resources and non-MSG1 duplicate resources are configured on the BWP, execute S402b.

[0093] Among them, the resource configuration on BWP can be shown in Figure 2. There are three situations: only MSG1 repeated resources are configured on BWP, both MSG1 repeated resources and non-MSG1 repeated resources are configured on BWP, and only non-MSG1 repeated resources are configured on BWP.

[0094] S402a: Configure a second threshold. For example, configure a corresponding second threshold for each of the MSG1 repetition times except for the MSG1 repetition time with the lowest repetition time.

[0095] The second threshold is as described above, and is used to distinguish the number of repetitions of MSG1.

[0096] Take the configuration of n types of MSG1 repetition resources on BWP as an example:

[0097] In one example, a network device configures thresholds corresponding to n types of MSG1 repetitions for a terminal, with each MSG1 repetition corresponding to a threshold, i.e., n thresholds are configured. The thresholds corresponding to MSG1 repetitions are used by the terminal to determine whether to select a MSG1 repetition for random access based on the relationship between signal quality and the thresholds. If the signal quality is less than the second threshold corresponding to the i-th MSG1 repetition among the n MSG1 repetitions sorted in ascending order, the i-th MSG2 repetition is selected, where i ranges from [1 to n]. If the signal quality is not less than the second threshold corresponding to any MSG1 repetition, the lowest MSG1 repetition is selected, i.e., the first MSG1 repetition among the n MSG1 repetitions sorted in ascending order.

[0098] In another example, the network device configures thresholds corresponding to n-1 types of MSG1 repetitions other than the lowest MSG1 repetition count for the terminal, that is, configures n-1 thresholds. The thresholds can be used by the terminal to determine whether to select the MSG1 repetition count corresponding to the threshold to initiate random access based on the relationship between signal quality and the threshold value. If the signal quality is less than the second threshold corresponding to the i-th type of MSG1 repetition count among the n types of MSG1 repetition counts sorted from smallest to largest, the i-th type of MSG2 repetition count is selected, where i ranges from [2, n]. If the signal quality is not less than the second threshold corresponding to any MSG1 repetition count or not less than the threshold corresponding to the second type of MSG1 repetition count, the lowest MSG1 repetition count, that is, the first type of MSG1 repetition count among the n types of MSG1 repetition counts sorted from smallest to largest, is selected.

[0099] It should be understood that in this example, when one type of MSG1 repetition number of resources is configured on the BWP, that is, when n=1, the network device may not configure the threshold corresponding to the MSG1 repetition number. Here, the MSG1 repetition number related to the resource configured on the BWP is selected to initiate random access.

[0100] For example, as shown in Case 1 in Figure 2, the resources configured on the BWP only include the resources repeated by MSG1. These resources repeated by MSG1 can be used for MSG1 repetition 2, MSG1 repetition 4, and MSG1 repetition 8. S402a then means configuring a corresponding second threshold for MSG1 repetition 4 and a corresponding second threshold for MSG1 repetition 8, but not configuring a corresponding threshold for MSG1 repetition 2. The thresholds configured for MSG1 repetition 4 and MSG1 repetition 8 are both the aforementioned second thresholds. At this point, the network device configures three third thresholds for the terminal: rsrp-ThresholdMsg1-RepetitionNum2 for MSG1 repetition 2, rsrp-ThresholdMsg1-RepetitionNum4 for MSG1 repetition 4, and rsrp-ThresholdMsg1-RepetitionNum8 for MSG1 repetition 8. The threshold rsrp-ThresholdMsg1-RepetitionNum8 is used to select MSG1 repetition 8. If the signal quality is lower than the threshold rsrp-ThresholdMsg1-RepetitionNum8, MSG1 repetition 8 is selected. The threshold rsrp-ThresholdMsg1-RepetitionNum4 is used to select MSG1 repetition 4. If the signal quality is lower than the threshold rsrp-ThresholdMsg1-RepetitionNum4, MSG1 repetition 4 is selected. The threshold rsrp-ThresholdMsg1-RepetitionNum2 is used to select MSG1 repetition 2. If the signal quality is lower than the threshold rsrp-ThresholdMsg1-RepetitionNum2, MSG1 repetition 2 is selected.

[0101] Alternatively, the network device configures two second thresholds for the terminal: rsrp-ThresholdMsg1-RepetitionNum4 for MSG1 repetition 4, and rsrp-ThresholdMsg1-RepetitionNum8 for MSG1 repetition 8. Threshold rsrp-ThresholdMsg1-RepetitionNum8 is used to select MSG1 repetition 8. If the signal quality is less than threshold rsrp-ThresholdMsg1-RepetitionNum8, MSG1 repetition 8 is selected. Threshold rsrp-ThresholdMsg1-RepetitionNum4 is used to select MSG1 repetition 4. If the signal quality is less than threshold rsrp-ThresholdMsg1-RepetitionNum4, MSG1 repetition 4 is selected. If the signal quality is greater than or equal to threshold rsrp-ThresholdMsg1-RepetitionNum4, MSG1 repetition 2 is selected.

[0102] When both MSG1 repetition resources and non-MSG1 repetition resources are configured on the BWP, the network side device may configure corresponding thresholds for different MSG1 repetition times, ie, S402b described below.

[0103] S402b: Configure a first threshold and a second threshold.

[0104] Specifically, S402b may include configuring a first threshold for the minimum number of repetitions, and configuring corresponding second thresholds for other numbers of repetitions except the minimum number of repetitions.

[0105] In this case, because both MSG1 repetition resources and non-MSG1 repetition resources are configured on the BWP, the MSG1 repetition feature can be selected to initiate random access, or the non-MSG1 repetition feature can be selected to initiate random access. In order to distinguish whether the MSG1 repetition feature or the non-MSG1 repetition feature is selected, and which MSG1 repetition number is selected when the MSG1 repetition feature is selected, the network device can configure n thresholds corresponding to MSG1 repetition numbers for the terminal, one MSG1 repetition number corresponds to one threshold, that is, n thresholds are configured, and the threshold corresponding to the MSG1 repetition number is used by the terminal to determine whether to select the MSG1 repetition number to initiate random access based on the relationship between the signal quality and the threshold size.

[0106] In one example, the n thresholds configured by the network device for the terminal may include n second thresholds. The description of the second thresholds is similar to that in Case 1 above and can be used to distinguish MSG1 repetitions. If the signal quality is less than the second threshold corresponding to the i-th MSG1 repetition among n MSG1 repetitions sorted from smallest to largest, the i-th MSG2 repetition is selected, where i ranges from [1 to n]. If the signal quality is not less than the second threshold corresponding to any MSG1 repetition or the second threshold corresponding to the lowest MSG1 repetition, a non-MSG1 repetition is selected.

[0107] In another example, the n thresholds configured by the network device for the terminal may include a first threshold and n-1 second thresholds. The first threshold can be used to determine whether to select the MSG1 repetition feature. The second threshold, similar to the description in Case 1 above, can be used to distinguish the number of MSG1 repetitions. If the signal quality is not less than the first threshold, non-MSG1 repetition is selected. If the signal quality is less than the first threshold, MSG1 repetition is selected. If MSG1 repetition is selected, if the signal quality is less than the second threshold corresponding to the i-th type of MSG1 repetition among n types of MSG1 repetitions sorted from smallest to largest, the i-th type of MSG2 repetition is selected, where the value of i ranges from [2, n].

[0108] For example, as shown in Case 2 in Figure 2 , both MSG1 repetition resources and non-MSG1 repetition resources are configured on the BWP. The MSG1 repetition resources can be used for MSG1 repetition 2, MSG1 repetition 4, and MSG1 repetition 8. S402b then involves configuring a corresponding threshold for MSG1 repetition 2, MSG1 repetition 4, and MSG1 repetition 8. The threshold configured for MSG1 repetition 2 is the first threshold described above, and the thresholds configured for MSG1 repetition 4 and MSG1 repetition 8 are both the second threshold described above. In this case, the network device can configure the threshold rsrp-ThresholdMsg1-RepetitionNum2 corresponding to MSG1 repetition 2, the threshold rsrp-ThresholdMsg1-RepetitionNum4 corresponding to MSG1 repetition 4, and the threshold rsrp-ThresholdMsg1-RepetitionNum8 corresponding to MSG1 repetition 8 for the terminal. rsrp-ThresholdMsg1-RepetitionNum8 and rsrp-ThresholdMsg1-RepetitionNum4 are the second thresholds, and rsrp-ThresholdMsg1-RepetitionNum2 can be called the first threshold. Threshold rsrp-ThresholdMsg1-RepetitionNum8 is used to select MSG1 repetition 8. If the signal quality is less than threshold rsrp-ThresholdMsg1-RepetitionNum8, MSG1 repetition 8 is selected. The threshold rsrp-ThresholdMsg1-RepetitionNum4 is used to select MSG1 repetition 4. If the signal quality is less than the threshold rsrp-ThresholdMsg1-RepetitionNum4, MSG1 repetition 4 is selected.The threshold rsrp-ThresholdMsg1-RepetitionNum2 is used to select MSG1 repetition 2. If the signal quality is less than the threshold rsrp-ThresholdMsg1-RepetitionNum2, MSG1 repetition 2 is selected. If the signal quality is greater than or equal to the threshold rsrp-ThresholdMsg1-RepetitionNum2, a non-MSG1 repetition is selected.

[0109] It can be seen that the threshold configured by the first threshold configuration method provided in the embodiment of the present application can facilitate the user terminal to distinguish between MSG1 repetition and non-MSG1 repetition based on the threshold (such as the first threshold), which is beneficial for the terminal side to perform the selection of MSG1 repetition and non-MSG1 repetition, and in the case of MSG1 repetition, select the appropriate number of MSG1 repetitions based on the threshold (such as the second threshold).

[0110] Optionally, when only non-MSG1 repetition resources are configured on the BWP, such as when only other features except MSG1 repetition are configured including RedCap as an example, when only RedCap resources are configured on the BWP, the random access process does not apply to MSG1 repetition, but applies to non-MSG1 repetition, that is, random access is initiated using non-MSG1 repetition. At this time, the network device does not configure the first threshold for distinguishing whether MSG1 repetition is applicable and / or the second threshold for distinguishing the number of MSG1 repetitions for the terminal. The characteristic is a non-MSG1 repetition characteristic related to the resources configured on the BWP.

[0111] After the network side device configures the threshold for the user terminal according to the above threshold configuration method, the user terminal can perform feature selection based on the threshold and the currently measured RSRP.

[0112] The following describes the first feature selection method provided in an embodiment of the present application. It should be understood that, corresponding to the two threshold configuration methods provided in an embodiment of the present application, the embodiment of the present application provides two feature selection methods, both of which are applied to user terminals. These two feature selection methods can be referred to as the first feature selection method and the second feature selection method, respectively. The first feature selection method corresponds to the first threshold configuration method, and the second feature selection method corresponds to the second threshold configuration method. That is, when the network-side device executes the first threshold configuration method, the user terminal can execute the first feature selection method. When the network-side device executes the second threshold configuration method, the user terminal can execute the second feature selection method.

[0113] The first characteristic selection method is first introduced below. The first characteristic selection method can be described as follows: based on the currently measured RSRP, MSG1 repetition or non-MSG1 repetition is selected according to a first threshold, and the number of MSG1 repetitions is selected according to a second threshold.

[0114] Specifically, when only MSG1 repetition resources are configured on the BWP, the number of MSG1 repetitions is selected based on the currently measured RSRP and the second thresholds. When both MSG1 repetition and non-MSG1 repetition resources are configured on the BWP, MSG1 repetition or non-MSG1 repetition is selected based on the currently measured RSRP and the first threshold, and the number of MSG1 repetitions is selected based on the second threshold. When only non-MSG1 repetition resources are configured on the BWP, non-MSG1 repetition is selected.

[0115] Specifically, when only MSG1 repeated resources are configured on the BWP, or when both MSG1 repeated resources and non-MSG1 repeated resources are configured on the BWP, and the currently measured RSRP is less than or equal to the first threshold, the user terminal can select the number of repetitions of MSG1 repetitions based on the currently measured RSRP and each second threshold.

[0116] When only non-MSG1 repetition resources are configured on the BWP, or when both MSG1 repetition resources and non-MSG1 repetition resources are configured on the BWP and the currently measured RSRP is greater than the first threshold, non-MSG1 repetition is selected.

[0117] For example, a BWP is configured with MSG1 repetition resources, with n MSG1 repetitions. The different MSG1 repetitions are designated A1, A2, ..., An, in ascending order. The network device configures a threshold B2 for A2, B3 for A3, ..., and Bn for An. If non-MSG1 repetition resources are also configured on the BWP, the threshold is B1. It should be understood that B1 through Bn are in descending order. Thus, the lower the currently measured RSRP, the greater the probability of selecting MSG1 repetitions. If MSG1 repetitions are selected, a higher number of MSG1 repetitions will be selected.

[0118] For example, if the number of repetitions of MSG1 is n: A1, A2, ..., An, A2, ..., An, and the corresponding second thresholds are B2, ..., Bn respectively, the first feature selection method can be stated as follows:

[0119] 1) When only MSG1 repetition resources are configured, or when only multiple MSG1 repetition resources are configured on the selected BWP; or when both MSG1 repetition resources and non-MSG1 repetition resources are configured, or when both MSG1 repetition resources and non-MSG1 repetition resources are configured on the selected BWP, and the currently measured RSRP is less than or equal to a first threshold, MSG1 repetition is selected. Furthermore, an appropriate number of MSG1 repetitions is selected based on a comparison of the currently measured RSRP with a second threshold B corresponding to each number of MSG1 repetitions.

[0120] Among them, according to the comparison of the currently measured RSRP with the second threshold B corresponding to each MSG1 repetition number, selecting the appropriate MSG1 repetition number may include the following a)-e):

[0121] a) If the threshold Bn corresponding to An is configured and the currently measured RSRP is less than Bn, An is selected, that is, the number of MSG1 repetitions corresponding to An.

[0122] In one implementation, if the currently measured RSRP is greater than or equal to the threshold Bn, step b) is performed.

[0123] b) If the threshold Bn-1 corresponding to An-1 is configured and the currently measured RSRP is less than Bn-1, An-1 is selected.

[0124] In one implementation, if the currently measured RSRP is greater than or equal to the threshold Bn-1, execute c).

[0125] c) If the threshold Bn-2 corresponding to An-2 is configured and the currently measured RSRP is less than Bn-2, An-2 is selected.

[0126] In one implementation, if the currently measured RSRP is greater than or equal to the threshold Bn-2, and so on, the threshold corresponding to the next number of repetitions of MSG1 is continuously compared with the currently measured RSRP.

[0127] d) If the threshold B2 corresponding to A2 is configured and the currently measured RSRP is less than B2, A2 is selected.

[0128] e) Otherwise, if none of the above a)-d) cases have resulted in a good number of repetitions for MSG1, select A1.

[0129] The sequential execution of the above processes from a) to e) ensures that only one MSG1 repetition number can be selected by comparing the measured link quality with the threshold.

[0130] 2) When only non-MSG1 repetition resources are configured or only non-MSG1 repetition resources are configured on the selected BWP, non-MSG1 repetition is selected; or, when both MSG1 repetition resources and non-MSG1 repetition resources are configured or both MSG1 repetition resources and non-MSG1 repetition resources are configured on the selected BWP, and the currently measured RSRP is greater than the first threshold, non-MSG1 repetition is selected; or, in the otherwise case in 1), that is, when no MSG1 repetition number is selected in cases a) to d) in 1), non-MSG1 repetition is selected.

[0131] From the descriptions of 1) and 2) above, if the currently measured RSRP is less than or equal to the first threshold, MSG1 repetition is selected; if the currently measured RSRP is greater than the first threshold, non-MSG1 repetition is selected. Since the currently measured RSRP represents link quality, it can be seen that if the link quality is less than the first threshold, MSG1 repetition is selected; if the link quality is greater than the first threshold, non-MSG1 repetition is selected.

[0132] It should be understood that the currently measured RSRP being less than Bn-1 above means that the currently measured RSRP is less than Bn-1 and greater than Bn-2. The currently measured RSRP being less than Bn-2 means that the currently measured RSRP is less than Bn-2 and greater than Bn-3. The same applies to other less-than relationships. The currently measured RSRP being less than B2 means that the currently measured RSRP is less than B2 and greater than B1. Based on this, the otherwise condition above means that the currently measured RSRP is less than B1 and greater than B2.

[0133] It should be noted that the RSRP used to characterize link quality is merely an example. When RSRP is used to characterize link quality, the threshold compared with RSRP can be referred to as the RSRP threshold. For example, the first threshold described above can also be alternatively described as the first RSRP threshold, and the second threshold can also be described as the second RSRP threshold. Furthermore, in some possible designs, the parameters used to characterize link quality include, but are not limited to, RSRP, and may also include RSSI, SINR, and the like. When RSSI is used to characterize link quality, the configured threshold can also be referred to as the RSSI threshold, and the currently measured RSRP can be replaced by the currently measured RSSI. When SINR is used to characterize link quality, the configured threshold can also be referred to as the SINR threshold. In this case, the currently measured RSRP in the above statement can be replaced by the currently measured SINR. That is, when the threshold is a threshold of a parameter characterizing link quality, the currently measured RSRP in the above statement can be replaced by the currently measured parameter characterizing link quality.

[0134] The following provides a specific implementation process of the first feature selection method provided in an embodiment of the present application. It should be understood that this specific implementation process is merely exemplary and is used to provide a possible execution process of the first feature selection method. Therefore, this specific implementation process should not be understood as limiting the first feature selection method provided in an embodiment of the present application.

[0135] Please refer to Figure 5, which is a flow chart of a first feature selection method provided in an embodiment of the present application. As shown in Figure 5, the process may include the following steps.

[0136] S501: Receive a threshold configured by a network-side device.

[0137] It should be understood that the network side device configures the threshold for the user terminal through the first threshold configuration method in the above embodiment. For details, please refer to the above embodiment and will not be described in detail here.

[0138] As mentioned above, the threshold is carried in the configuration information or configuration parameters.

[0139] Further optionally, the configuration information or configuration parameters can also be used to configure random access resources for the random access process, so that the terminal also receives configuration information from the network side device and obtains the resource set configured for the random access process (or called random access resources or resource set).

[0140] Further optionally, the terminal determines the configuration of the resource set configured for the random access process, and selects the random access feature according to the configuration of the resource set configured for the random access process and the threshold configured by the network device for the terminal. For example, when receiving the threshold configured by the network device for each MSG1 repetition number other than the minimum repetition (which can be called the second threshold), select MSG1 repetition and execute S502a.

[0141] If the thresholds configured by the network device for various MSG1 repetition times are received, such as a first threshold configured for the minimum repetition time and a second threshold configured for MSG1 repetition times other than the minimum repetition time, S502b is executed. If the thresholds configured by the network device are empty or unconfigured, S502c is executed: non-MSG1 repetition is selected.

[0142] Optionally, when only random access resources for MSG1 repetition are configured on the selected BWP, if the threshold corresponding to the number of MSG repetitions is not configured (such as the first threshold and / or the second threshold is not configured), the number of MSG1 repetitions configured for the BWP is selected.

[0143] S502a: Determine the number of repetitions of MSG1 according to the currently measured RSRP and each second threshold.

[0144] The specific determination method can be found in the above description 1) and will not be elaborated here.

[0145] When the BWP is configured with both MSG1-repeated and non-MSG1-repeated resources, the user terminal will receive both the first threshold and the second threshold. The user terminal can first determine whether to select the MSG1 repetition count or the non-MSG1 repetition count based on the currently measured RSRP and the first threshold. The user terminal then executes different steps based on the determination result, namely, S502b below.

[0146] S502b: Determine whether to select MSG1 repetition based on the currently measured RSRP and the first threshold. If the currently measured RSRP is less than or equal to the first threshold, select MSG1 repetition and execute S502a. If the currently measured RSRP is greater than the first threshold, execute S502c.

[0147] That is, the method shown in FIG5 can be understood as the following process:

[0148] If the configuration information indicates that contention-free random access resources are provided for the random access process, and the configuration information also indicates an MSG1 repetition number, then MSG1 repetition is applicable to this random access, and the MSG1 repetition number used in this random access is the MSG1 repetition number indicated by the configuration information.

[0149] For example, the configuration information indicates that the random access resource configured by the network device for the terminal is a CBRA resource and further indicates an MSG1 repetition number of 2. Then, the terminal uses MSG1 repetition when initiating random access this time, and the MSG1 repetition number is 2.

[0150] On the contrary, if the configuration information does not indicate that non-contention random access resources are provided for the random access process, the terminal determines whether the resource set on the selected BWP only contains resources repeated by MSG1, and selects the characteristics for the current random access process based on the determination result. Specifically, the following methods are included:

[0151] Method 1: If the BWP configured for the random access process includes MSG1 repetition resources and non-MSG1 repetition resources, non-MSG1 repetition or MSG1 repetition is selected according to the threshold configured by the network device for the terminal.

[0152] In one example, the BWP includes n types of resources with MSG1 repetition times and resources without MSG1 repetition times. The threshold configured by the network device for the terminal includes n-2 second thresholds. The second threshold is used to distinguish whether to select the MSG1 repetition resource corresponding to the second threshold. The n second thresholds correspond to n types of MSG1 repetition times X. In this example, the following may be included:

[0153] a) If the second threshold X' corresponding to MSG1 repetition number X is configured and the signal quality is less than X', MSG1 repetition number X is selected;

[0154] b) If the second threshold X-1' corresponding to the MSG1 repetition number X-1 is configured and the signal quality is less than X-1', the MSG1 repetition number X-1 is selected;

[0155] c) If the second threshold X-2' corresponding to the number of MSG1 repetitions X-2 is configured and the signal quality is less than X-2', the number of MSG1 repetitions X-2 is selected;

[0156] Similarly, the second threshold corresponding to each MSG1 repetition number is traversed until the second MSG1 repetition number is sorted from low to high according to the MSG1 repetition number. If the signal quality is less than the second MSG1 repetition number, the second MSG1 repetition number is selected. Conversely, if the signal quality is greater than or equal to the second MSG1 repetition number, step d) is executed.

[0157] d) If the second threshold 1' corresponding to the MSG1 repetition number 1 is configured and the signal quality is less than 1', the MSG1 repetition number 1 is selected.

[0158] On the contrary, if none of the above a)-d) are satisfied, that is, the signal quality is not less than the second threshold corresponding to any number of MSG1 repetitions, MSG1 repetition is not selected and a non-MSG1 repetition is selected to initiate random access; or if the signal quality is less than the second threshold 1' corresponding to the lowest number of MSG1 repetitions, MSG1 repetition is not selected and a non-MSG1 repetition is selected to initiate random access.

[0159] For example, taking the case where the number of MSG1 repetitions includes 2, 4, and 8, and the signal quality is the RSRP of the downlink path loss reference signal, if the BWP is configured with resources with a Msg1 repetition number of 8, and the RSRP of the downlink path loss reference signal is less than rsrp-ThresholdMsg1-RepetitionNum8, the terminal selects MSG1 repetition when initiating random access this time, and the number of MSG1 repetitions is 8. If the BWP is configured with resources with a Msg1 repetition number of 4, and the RSRP of the downlink path loss reference signal is less than rsrp-ThresholdMsg1-RepetitionNum4, the terminal selects MSG1 repetition when initiating random access this time, and the number of MSG1 repetitions is 4. If the BWP is configured with resources with a Msg1 repetition number of 2, and the RSRP of the downlink path loss reference signal is less than rsrp-ThresholdMsg1-RepetitionNum

[0160] rsrp-ThresholdMsg1-RepetitionNum2, the terminal selects MSG1 repetition when initiating random access this time, and the number of MSG1 repetitions is 2. Otherwise, if the RSRP of the downlink path loss reference signal is not less than the threshold rsrp-ThresholdMsg1-RepetitionNumX corresponding to any MSG1 repetition number X, the terminal determines that MSG1 repetition is not applicable to this random access initiation, that is, non-MSG1 repetition is applicable.

[0161] In another example, the BWP includes n types of resources with MSG1 repetitions and non-MSG1 repetitions. The thresholds configured by the network device for the terminal include n-1 second thresholds and a first threshold. The second threshold is used to distinguish whether to select the MSG1 repetition resource corresponding to the second threshold, and a first threshold is used to distinguish whether to select the MSG1 repetition. It should be understood that the first threshold can be regarded as the threshold corresponding to the minimum MSG1 repetition number. In this example, if the signal quality is greater than or equal to the first threshold, the non-MSG1 repetition is selected. If the signal quality is less than the first threshold, the MSG1 repetition is selected. At the same time, the MSG1 repetition number is selected based on the following processes a)-d):

[0162] a) If the second threshold X' corresponding to MSG1 repetition number X is configured and the signal quality is less than X', MSG1 repetition number X is selected;

[0163] b) If the second threshold X-1' corresponding to the MSG1 repetition number X-1 is configured and the signal quality is less than X-1', the MSG1 repetition number X-1 is selected;

[0164] c) If the second threshold X-2' corresponding to the number of MSG1 repetitions X-2 is configured and the signal quality is less than X-2', the number of MSG1 repetitions X-2 is selected;

[0165] Similarly, the second threshold corresponding to each MSG1 repetition number is traversed until the second MSG1 repetition number in the order of MSG1 repetition numbers from low to high is reached. If the signal quality is less than the second MSG1 repetition number, the second MSG1 repetition number is selected. Otherwise, if the signal quality is greater than or equal to the second MSG1 repetition number, or the signal quality is not less than any second threshold, step d) is executed.

[0166] d) Select the first MSG1 repetition number, that is, select the lowest MSG1 repetition number.

[0167] For example, taking the MSG1 repetition times including 2, 4 and 8, and the signal quality being the RSRP of the downlink path loss reference signal as an example, the thresholds configured by the network device for the terminal include a first threshold and two second thresholds: rsrp-ThresholdMsg1-RepetitionNum8 and rsrp-ThresholdMsg1-RepetitionNum4. If the RSRP of the downlink path loss reference signal is not less than (greater than or equal to) the first threshold, the terminal does not select MSG1 repetition when initiating random access this time, and selects non-MSG1 repetition. Otherwise, if the RSRP of the downlink path loss reference signal is less than the first threshold, and if resources with an Msg1 repetition time of 8 are configured on the BWP, and the RSRP of the downlink path loss reference signal is less than rsrp-ThresholdMsg1-RepetitionNum8, the terminal selects MSG1 repetition when initiating random access this time, and the MSG1 repetition time is 8 times. If the BWP is configured with a resource with an Msg1 repetition count of 4 and the RSRP of the downlink path loss reference signal is less than rsrp-ThresholdMsg1-RepetitionNum4, the terminal selects MSG1 repetition when initiating random access this time, and the MSG1 repetition count is 4 times. If the RSRP of the downlink path loss reference signal is not less than rsrp-ThresholdMsg1-RepetitionNum4, the terminal selects MSG1 repetition when initiating random access this time, and the MSG1 repetition count is 2 times.

[0168] Method 2: If the BWP configured for the random access process only includes resources for MSG1 repetition, the terminal determines that the random access process is applicable to MSG1 repetition and selects the number of MSG1 repetitions to initiate random access.

[0169] As described above, when the BWP configured for the random access process includes only resources for MSG1 repetition, it may include only one resource for MSG1 repetition times, or it may include resources for at least two MSG1 repetition times. In this case, the threshold configured by the network device for the terminal may include at least one threshold rsrp-ThresholdMsg1-RepetitionNumX, or may not include the threshold rsrp-ThresholdMsg1-RepetitionNumX. When the threshold includes at least one threshold rsrp-ThresholdMsg1-RepetitionNumX, S504 may include the following two examples:

[0170] In one example, the threshold configured by the network device for the terminal includes n second thresholds, the second threshold is used to distinguish whether to select the MSG1 repetition resource corresponding to the second threshold, and the n second thresholds correspond to n types of MSG1 repetition times X, including the following steps a)-d):

[0171] a) If the second threshold X' corresponding to MSG1 repetition number X is configured and the signal quality is less than X', random access is initiated with MSG1 repetition number X;

[0172] b) If the second threshold X-1' corresponding to the number of MSG1 repetitions X-1 is configured and the signal quality is less than X-1', random access is initiated by selecting the number of MSG1 repetitions X-1;

[0173] c) If the second threshold X-2' corresponding to the number of MSG1 repetitions X-2 is configured and the signal quality is less than X-2', random access is initiated by selecting the number of MSG1 repetitions X-2;

[0174] Similarly, the second threshold corresponding to each MSG1 repetition number is traversed until the second MSG1 repetition number is sorted from low to high according to the MSG1 repetition number. If the signal quality is less than the second MSG1 repetition number, the second MSG1 repetition number is selected. Conversely, if the signal quality is greater than or equal to the second MSG1 repetition number, step d) is executed.

[0175] d) If the second threshold 1' corresponding to the MSG1 repetition number 1 is configured and the signal quality is less than 1', the MSG1 repetition number 1 is selected.

[0176] Otherwise, if none of the above a)-d) are satisfied, that is, if the signal quality (or RSRP of the downlink path loss reference signal) is less than the threshold rsrp-ThresholdMsg1-RepetitionNumX corresponding to any MSG1 repetition number X, the terminal determines that the number of MSG1 repetitions in the random access process is the minimum MSG1 repetition number configured for the BWP.

[0177] In this application, if the network device does not configure the threshold rsrp-ThresholdMsg1-RepetitionNumX for the terminal, the number of MSG1 repetitions during this random access process is the resource-related MSG1 repetition number configured on the BWP.

[0178] For example, taking the case where the number of MSG1 repetitions includes 2, 4, and 8, and the signal quality is the RSRP of the downlink path loss reference signal, the configuration information includes a threshold rsrp-ThresholdMsg1-RepetitionNum8, and the RSRP of the downlink path loss reference signal is less than rsrp-ThresholdMsg1-RepetitionNum8, then the terminal uses MSG1 repetition when initiating random access, and the number of MSG1 repetitions is 8. If the configuration information includes a threshold rsrp-ThresholdMsg1-RepetitionNum4, and the RSRP of the downlink path loss reference signal is less than rsrp-ThresholdMsg1-RepetitionNum4, then the terminal uses MSG1 repetition when initiating random access, and the number of MSG1 repetitions is 4. If the configuration information includes a threshold rsrp-ThresholdMsg1-RepetitionNum2 and the RSRP of the downlink path loss reference signal is less than rsrp-ThresholdMsg1-RepetitionNum2, the terminal uses MSG1 repetition when initiating random access, and the number of MSG1 repetitions is 2. Otherwise, if the RSRP of the downlink path loss reference signal is not less than any threshold, the terminal selects the lowest number of MSG1 repetitions to initiate random access.

[0179] In another example, the BWP includes n types of resources with MSG1 repetition times and non-MSG1 repetition times. The threshold configured by the network device for the terminal includes n-1 second thresholds, and the second threshold is used to determine whether to select the MSG1 repetition resource corresponding to the second threshold. In this example, the following processes a)-d) may be included:

[0180] a) If the second threshold X' corresponding to MSG1 repetition number X is configured and the signal quality is less than X', MSG1 repetition number X is selected;

[0181] b) If the second threshold X-1' corresponding to the MSG1 repetition number X-1 is configured and the signal quality is less than X-1', the MSG1 repetition number X-1 is selected;

[0182] c) If the second threshold X-2' corresponding to the number of MSG1 repetitions X-2 is configured and the signal quality is less than X-2', the number of MSG1 repetitions X-2 is selected;

[0183] Similarly, the second threshold corresponding to each MSG1 repetition number is traversed until the second MSG1 repetition number in the order of MSG1 repetition numbers from low to high is reached. If the signal quality is less than the second MSG1 repetition number, the second MSG1 repetition number is selected. Otherwise, if the signal quality is greater than or equal to the second MSG1 repetition number, or the signal quality is not less than any second threshold, step d) is executed.

[0184] d) Select the first MSG1 repetition number, that is, select the lowest MSG1 repetition number.

[0185] For example, taking the MSG1 repetition times including 2, 4 and 8, and the signal quality being the RSRP of the downlink path loss reference signal as an example, the threshold configured by the network device for the terminal includes two second thresholds: rsrp-ThresholdMsg1-RepetitionNum8 and rsrp-ThresholdMsg1-RepetitionNum4. If the BWP is configured with resources of MSG1 repetition times 8, and the RSRP of the downlink path loss reference signal is less than rsrp-ThresholdMsg1-RepetitionNum8, the terminal selects MSG1 repetition when initiating random access this time, and the MSG1 repetition times are 8 times. If the BWP is configured with a resource with an MSG1 repetition count of 4 and the RSRP of the downlink path loss reference signal is less than rsrp-ThresholdMsg1-RepetitionNum4, the terminal selects MSG1 repetition when initiating random access this time, and the MSG1 repetition count is 4 times. If the RSRP of the downlink path loss reference signal is not less than rsrp-ThresholdMsg1-RepetitionNum4, the terminal selects MSG1 repetition when initiating random access this time, and the MSG1 repetition count is 2 times.

[0186] Method 3: If the resource set on the BWP includes only non-MSG1 duplicate resources, select non-MSG1 duplicate.

[0187] The following describes the first characteristic selection method provided in the embodiment of the present application by taking the three cases shown in FIG. 2 as an example.

[0188] In scenario 1 shown in Figure 2, only MSG1 repetition resources are configured on the BWP. The network-side device configures threshold 2 for MSG1 repetition 4 and threshold 3 for MSG1 repetition 8. The user terminal selects MSG1 repetition 4 when the currently measured RSRP is less than threshold 2 and greater than threshold 3; selects MSG1 repetition 8 when the currently measured RSRP is less than threshold 3; and selects MSG1 repetition 2 when the currently measured RSRP is greater than threshold 2.

[0189] In scenario 2 shown in Figure 2, the BWP is configured with both MSG1 repetition and non-MSG1 repetition resources. The network-side device configures threshold 1, which is used to select between MSG1 repetition and non-MSG1 repetition. MSG1 repetition 4 is configured with threshold 2, and MSG1 repetition 8 is configured with threshold 3. The user terminal selects non-MSG1 repetition when the currently measured RSRP is greater than threshold 1; it selects MSG1 repetition when the currently measured RSRP is less than threshold 1. Furthermore, if the currently measured RSRP is less than threshold 2 but greater than threshold 3, MSG1 repetition 4 is selected; if the currently measured RSRP is less than threshold 3, MSG1 repetition 8 is selected; otherwise, MSG1 repetition 2 is selected.

[0190] In case 3 shown in Figure 2, only the resources for MSG1 repetition are configured on the BWP, and the network-side device does not configure the threshold. The user terminal directly selects non-MSG1 repetition.

[0191] Based on the above description, it can be seen that the first feature selection method provided in the embodiment of the present application can select MSG1 repetition or non-MSG1 repetition based on the threshold configured on the network side (such as the first threshold). Furthermore, when MSG1 repetition is selected, the appropriate number of MSG1 repetitions is selected according to the threshold configured on the network side (such as the second threshold).

[0192] The first threshold configuration method and the first feature selection method provided in the embodiment of the present application are introduced above. The second threshold configuration method and the corresponding second feature selection method provided in the embodiment of the present application are introduced below.

[0193] The second threshold configuration method can be described as: configuring the second threshold. The second threshold is used to distinguish the number of repetitions of MSG1 or can be alternatively described as the second threshold is used to determine the number of repetitions of MSG1.

[0194] Specifically, the number of repetitions of MSG1 includes multiple numbers, and different numbers of repetitions of MSG1 are respectively configured with corresponding second thresholds.

[0195] For example, the number of configured MSG1 repetitions is n, and the different MSG1 repetitions are referred to as A1, A2, ..., An, in ascending order of repetition number. The network device can configure corresponding thresholds for A1 through An. In this embodiment, these thresholds are used to distinguish different MSG1 repetitions and are therefore referred to as second thresholds.

[0196] The second feature selection method provided by the embodiment of the present application is described below. As described in the above embodiment, the premise for the user terminal to perform the second feature selection method is that the network side device configures a threshold for the number of repetitions of each MSG1 through the second threshold configuration method.

[0197] The second characteristic selection method can be stated as follows: selecting the number of repetitions of MSG1 according to the currently measured RSRP and the second threshold.

[0198] It's important to note that the second threshold in the second feature selection method and the second threshold configuration method has a different meaning from the second threshold in the first feature selection method and the first threshold configuration method. In both the second feature selection method and the second threshold configuration method, the threshold configured for the number of MSG1 repetitions is referred to as the second threshold. For example, in both the second feature selection method and the second threshold configuration method, the threshold configured for the minimum number of repetitions is also referred to as the second threshold. In this case, the threshold configured for the minimum number of repetitions is used to select the number of MSG1 repetitions, not to select between MSG1 repetitions and non-MSG1 repetitions. This will not be discussed further below.

[0199] For example, suppose the number of MSG1 repetitions configured is n. Different MSG1 repetitions are called A1, A2, ..., An in ascending order. The threshold configured by the network side device for A1 is B1, the threshold configured for A2 is B2, the threshold configured for A3 is B3, ..., and the threshold configured for An is Bn. The second characteristic selection method can be stated as follows:

[0200] 2.1) When only MSG1 duplicate resources are configured on BWP,

[0201] a) If the threshold Bn corresponding to An is configured and the currently measured RSRP is less than Bn, select An, that is, the number of MSG1 repetitions corresponding to An. If the currently measured RSRP is greater than or equal to the threshold Bn, execute b).

[0202] b) If the threshold Bn-1 corresponding to An-1 is configured and the currently measured RSRP is less than Bn-1, select An-1. If the currently measured RSRP is greater than or equal to the threshold Bn-1, execute c).

[0203] c) If the threshold Bn-2 corresponding to An-2 is configured and the currently measured RSRP is less than Bn-2, An-2 is selected. If the currently measured RSRP is greater than or equal to the threshold Bn-2, the next threshold corresponding to the number of MSG1 repetitions is compared with the currently measured RSRP.

[0204] d) If the threshold B2 corresponding to A2 is configured and the currently measured RSRP is less than B2, A2 is selected.

[0205] e) If the threshold B1 corresponding to A1 is configured and the currently measured RSRP is less than B1, A1 is selected.

[0206] Otherwise, that is, when none of the above cases a) to e) selects the number of repetitions of MSG1, the number of repetitions of MSG1 with the smallest number of repetitions is selected.

[0207] 2.2) If both MSG1 repetition resources and non-MSG1 repetition resources are configured on the BWP, and the currently measured RSRP is less than or equal to the second threshold corresponding to the minimum repetition number, MSG1 repetition is selected. Furthermore, refer to 2.1) above to select an appropriate MSG1 repetition number.

[0208] In one example, the BWP includes n types of resources with MSG1 repetition times and resources without MSG1 repetition times. The threshold configured by the network device for the terminal includes n-2 second thresholds. The second threshold is used to distinguish whether to select the MSG1 repetition resource corresponding to the second threshold. The n second thresholds correspond to n types of MSG1 repetition times X. In this example, the following may be included:

[0209] a) If the second threshold X' corresponding to MSG1 repetition number X is configured and the signal quality is less than X', MSG1 repetition number X is selected;

[0210] b) If the second threshold X-1' corresponding to the MSG1 repetition number X-1 is configured and the signal quality is less than X-1', the MSG1 repetition number X-1 is selected;

[0211] c) If the second threshold X-2' corresponding to the number of MSG1 repetitions X-2 is configured and the signal quality is less than X-2', the number of MSG1 repetitions X-2 is selected;

[0212] Similarly, the second threshold corresponding to each MSG1 repetition number is traversed until the second MSG1 repetition number is sorted from low to high according to the MSG1 repetition number. If the signal quality is less than the second MSG1 repetition number, the second MSG1 repetition number is selected. Conversely, if the signal quality is greater than or equal to the second MSG1 repetition number, step d) is executed.

[0213] d) If the second threshold 1' corresponding to the MSG1 repetition number 1 is configured and the signal quality is less than 1', the MSG1 repetition number 1 is selected.

[0214] On the contrary, if none of the above a)-d) are satisfied, that is, the signal quality is not less than the second threshold corresponding to any number of MSG1 repetitions, MSG1 repetition is not selected and a non-MSG1 repetition is selected to initiate random access; or if the signal quality is less than the second threshold 1' corresponding to the lowest number of MSG1 repetitions, MSG1 repetition is not selected and a non-MSG1 repetition is selected to initiate random access.

[0215] 2.3) When only non-MSG1 repetition resources are configured on the BWP, or both MSG1 repetition resources and non-MSG1 repetition resources are configured on the BWP and the currently measured RSRP is greater than the second threshold corresponding to the minimum repetition number, non-MSG1 repetition is selected.

[0216] It is assumed below that the number of repetitions of MSG1 includes MSG1 repetition 2, MSG1 repetition 4, and MSG1 repetition 8. Taking the three cases shown in FIG2 as an example, the second characteristic selection method provided in the embodiment of the present application is described.

[0217] In case 1 shown in Figure 2, only resources for MSG1 repetition are configured on the BWP. The network-side device configures threshold 1 for MSG1 repetition 2, threshold 2 for MSG1 repetition 4, and threshold 3 for MSG1 repetition 8. The user terminal selects MSG1 repetition 2 when the currently measured RSRP is less than threshold 1 and greater than threshold 2; selects MSG1 repetition 4 when the currently measured RSRP is less than threshold 2 and greater than threshold 3; selects MSG1 repetition 8 when the currently measured RSRP is less than threshold 3; otherwise, selects the MSG1 repetition with the smallest number of repetitions among the configured MSG1 repetitions, namely MSG1 repetition 2.

[0218] In scenario 2 shown in Figure 2, the BWP is configured with both MSG1 repetition resources and non-MSG1 repetition resources. The network-side device configures threshold 1 for MSG1 repetition 2, threshold 2 for MSG1 repetition 4, and threshold 3 for MSG1 repetition 8. The user terminal selects MSG1 repetition 2 if the currently measured RSRP is less than threshold 1 and greater than threshold 2; selects MSG1 repetition 4 if the currently measured RSRP is less than threshold 2 and greater than threshold 3; selects MSG1 repetition 8 if the currently measured RSRP is less than threshold 3; and selects non-MSG1 repetition if the currently measured RSRP is greater than threshold 1.

[0219] That is, in case 2 shown in Figure 2, taking the case where the MSG1 repetition counts include 2, 4, and 8, and the signal quality is the RSRP of the downlink path loss reference signal as an example, if the BWP is configured with resources for an Msg1 repetition count of 8 and the RSRP of the downlink path loss reference signal is less than rsrp-ThresholdMsg1-RepetitionNum8, the terminal selects MSG1 repetition when initiating random access this time, and the MSG1 repetition count is 8. If the BWP is configured with resources for an Msg1 repetition count of 4 and the RSRP of the downlink path loss reference signal is less than srp-ThresholdMsg1-RepetitionNum4, the terminal selects MSG1 repetition when initiating random access this time, and the MSG1 repetition count is 4.

[0220] If resources with an Msg1 repetition count of 2 are configured on the BWP, and the RSRP of the downlink path loss reference signal is less than rsrp-ThresholdMsg1-RepetitionNum2, the terminal selects MSG1 repetition when initiating random access this time, and the MSG1 repetition count is 2. Otherwise, if the RSRP of the downlink path loss reference signal is not less than the threshold rsrp-ThresholdMsg1-RepetitionNumX corresponding to any MSG1 repetition count X, the terminal determines that MSG1 repetition is not applicable to this random access initiation, that is, non-MSG1 repetition is applicable.

[0221] In case 3 shown in Figure 2, only non-MSG1 repetition resources are configured on the BWP. In this case, the network-side device does not configure a threshold. The user terminal directly selects non-MSG1 repetitions.

[0222] Based on the above description, it can be seen that the second characteristic selection method provided in the embodiment of the present application enables the user terminal to distinguish between MSG1 repetition and non-MSG1 repetition based on the second threshold corresponding to the minimum number of repetitions configured on the network side, which is beneficial for the user terminal side to perform the selection of MSG1 repetition and non-MSG1 repetition, and in the case of MSG1 repetition, again select the appropriate number of MSG1 repetitions based on the second threshold.

[0223] In other possible scenarios, CFRA random access resources are configured on the BWP. The MSG1 repetition count is configured on the CFRA resource set, where the MSG1 repetition count includes one or more repetition counts. When the MSG1 repetition count includes one repetition count, all PRACH (Physical Random Access Channel) resource sets configured for the CFRA resource set apply that repetition count. When the MSG1 repetition count includes multiple repetition counts, the PRACH resource set configured for the CFRA resource set can be partitioned across multiple repetition counts. This can be done by RACH timing or preamble segmentation.

[0224] In the embodiment of the present application, when MSG1 repetition includes multiple repetition times, the first threshold and the second threshold in the above embodiment can be used to distinguish which repetition time to apply, and the RSRP can be used to determine which repetition time to apply, or whether to apply the repetition time. This is described in detail below.

[0225] Embodiments of the present application also provide a threshold configuration method and a feature selection method related to CFRA resources. The threshold configuration method related to CFRA resources includes a third threshold configuration method and a fourth threshold configuration method. Correspondingly, the feature selection method related to CFRA resources includes a third feature selection method and a fourth feature selection method. The third feature selection method corresponds to the third threshold configuration method, and the fourth feature selection method corresponds to the fourth threshold configuration method. That is, when the network-side device executes the third threshold configuration method, the user terminal can execute the third feature selection method. When the network-side device executes the fourth threshold configuration method, the user terminal can execute the fourth feature selection method.

[0226] The third threshold configuration method can be stated as: configuring a first threshold and a second threshold, wherein the first threshold is used to distinguish MSG1 repetitions or can be alternatively described as the first threshold is used to distinguish whether MSG1 repetitions are performed or can be alternatively described as the first threshold is used to determine whether MSG1 repetitions are selected, and the second threshold is used to distinguish the number of MSG1 repetitions.

[0227] It should be understood that the difference between the third threshold configuration method and the first threshold configuration method is that the third threshold configuration method is only for CFRA random access resources. Therefore, the second threshold, the first threshold, and each step in the third threshold configuration method can refer to the description of the first threshold configuration method in the aforementioned embodiment and will not be repeated here.

[0228] The fourth threshold configuration method can be stated as: configuring a second threshold, where the second threshold is used to distinguish the number of repetitions of MSG1, or can be alternatively described as the second threshold is used to determine the number of repetitions of MSG1.

[0229] It should be understood that the difference between the fourth threshold configuration method and the second threshold configuration method is that the fourth threshold configuration method is only for CFRA random access resources. Therefore, the second threshold and each step in the fourth threshold configuration method can refer to the description of the first threshold configuration method in the aforementioned embodiment and will not be repeated here.

[0230] Corresponding to the third threshold configuration method, the third characteristic selection method can be stated as follows: based on the currently measured RSRP, MSG1 repetition or non-MSG1 repetition is selected according to the first threshold, and the number of MSG1 repetitions is selected according to the second threshold.

[0231] Specifically, taking the case where the number of repetitions of MSG1 is n: A1, A2, ..., An, A2, ..., An, and the corresponding second thresholds are B2, ..., Bn respectively, the third feature selection method can be stated as follows:

[0232] 3.1) In the case where only MSG1 repetition resources are configured on CFRA or a MSG1 repetition resource set and a non-MSG1 repetition resource set are configured on CFRA and the measured RSRP is less than or equal to a first threshold.

[0233] Among them, according to the comparison of the currently measured RSRP with the second threshold B corresponding to each MSG1 repetition number, selecting the appropriate MSG1 repetition number may include the following 3.1a)-3.1e):

[0234] 3.1a) If the threshold Bn corresponding to An is configured and the currently measured RSRP is less than Bn, select An, that is, the number of MSG1 repetitions corresponding to An. If the currently measured RSRP is greater than or equal to the threshold Bn, execute 3.1b).

[0235] 3.1b) If the threshold Bn-1 corresponding to An-1 is configured and the currently measured RSRP is less than Bn-1, select An-1. If the currently measured RSRP is greater than or equal to the threshold Bn-1, proceed to 3.1c).

[0236] 3.1c) If the threshold Bn-2 corresponding to An-2 is configured and the currently measured RSRP is less than Bn-2, An-2 is selected. If the currently measured RSRP is greater than or equal to the threshold Bn-2, the threshold corresponding to the next number of MSG1 repetitions is compared with the currently measured RSRP.

[0237] 3.1d) If the threshold B2 corresponding to A2 is configured and the currently measured RSRP is less than B2, A2 is selected.

[0238] 3.1e) Otherwise, if none of the above 3.1a) to 3.1d) results in a number of repetitions for MSG1, select A1.

[0239] 3.2 When only non-MSG1 repeated resources are configured on CFRA, or both MSG1 repeated resources and non-MSG1 repeated resources are configured on CFRA, and the currently measured RSRP is greater than the first threshold, or in the otherwise case in 3.1), that is, when the MSG1 repetition number is not selected in 3.1a)-3.1d) in 3.1), execute 3.2a).

[0240] 3.2a) Select non-MSG1 repeats.

[0241] The second threshold, the first threshold and each step in the third characteristic selection method may refer to the description of the first characteristic selection method in the aforementioned embodiment, and will not be described in detail here.

[0242] The fourth characteristic selection method provided in the embodiment of the present application can be stated as follows: selecting the number of repetitions of MSG1 according to the currently measured RSRP and the second threshold.

[0243] Specifically, taking the case where the number of repetitions of MSG1 is n: A1, A2, ..., An, A2, ..., An, and the corresponding second thresholds are B2, ..., Bn respectively, the fourth feature selection method can be stated as follows:

[0244] 4.1) In the case where CFRA only configures the resources of MSG1 duplication,

[0245] 4.1a) If the threshold Bn corresponding to An is configured and the currently measured RSRP is less than Bn, select An, that is, the number of MSG1 repetitions corresponding to An. If the currently measured RSRP is greater than or equal to the threshold Bn, execute 4.1b).

[0246] 4.1b) If the threshold Bn-1 corresponding to An-1 is configured and the currently measured RSRP is less than Bn-1, select An-1. If the currently measured RSRP is greater than or equal to the threshold Bn-1, go to 4.1c).

[0247] 4.1c) If the threshold Bn-2 corresponding to An-2 is configured and the currently measured RSRP is less than Bn-2, An-2 is selected. If the currently measured RSRP is greater than or equal to the threshold Bn-2, the threshold corresponding to the next number of MSG1 repetitions is compared with the currently measured RSRP.

[0248] 4.1d) If the threshold B2 corresponding to A2 is configured and the currently measured RSRP is less than B2, A2 is selected.

[0249] 4.1e) If the threshold B1 corresponding to A1 is configured and the currently measured RSRP is less than B1, A1 is selected.

[0250] 4.1f) Otherwise, that is, if none of the above cases a) to e) have selected the number of MSG1 repetitions, select the number of MSG1 repetitions with the smallest number of repetitions.

[0251] 4.2) If CFRA is configured with both MSG1 repetition resources and non-MSG1 repetition resources, and the currently measured RSRP is less than or equal to the second threshold corresponding to the minimum number of repetitions, MSG1 repetition is selected. Furthermore, refer to 4.1) above to select an appropriate number of MSG1 repetitions.

[0252] 4.3) When only non-MSG1 repetition resources are configured on the BWP, or both MSG1 repetition resources and non-MSG1 repetition resources are configured on the BWP and the currently measured RSRP is greater than the second threshold corresponding to the minimum number of repetitions, non-MSG1 repetition is selected, that is, 4.3a) is executed.

[0253] 4.3a) Selecting non-MSG1 repetitions The second threshold and each step in the fourth feature selection method can refer to the description of the second feature selection method in the above embodiment, and will not be repeated here.

[0254] The above is a description of the threshold configuration method and feature selection method provided in the embodiments of the present application.

[0255] After selecting the characteristics, that is, determining the number of MSG1 repetitions, the user terminal needs to determine the resource set corresponding to the number of MSG1 repetitions. The existing resource set determination method is described as follows:

[0256] 3.1) When no CFRA (Contention Free Random Access) resources are configured and at least one feature (or random access feature) is selected:

[0257] 3.1.a) If there is no resource set associated with the selected feature, select a resource set that is not associated with any feature.

[0258] 3.1.b) If there is a resource set associated with all selected features, select that resource set.

[0259] 3.1.c) If there is at least one resource set associated with a subset of all selected characteristics, the resource set is selected according to priority.

[0260] 3.2) When CFRA resources are configured and RedCap is applied to the current random access procedure:

[0261] 3.2.a) If there is a resource set that is configured with only RedCap resources, select this resource set.

[0262] 3.3) Otherwise, if no resource set is selected in 3.1) and 3.2) above, a resource set that is not associated with any feature is selected.

[0263] In this application, if CFRA resources are not configured, after determining the number of MSG1 repetitions, the resource set can be determined according to existing mechanisms. For example, an appropriate resource set can be selected according to 3.1)-3.3) above. When CFRA resources are configured, when CFRA falls back to CBRA (Contention Based Random Access), public resources are selected, that is, resources not associated with any features. For MSG1 repetition (MSG1 repetition), if MSG1 repetition is configured with CFRA resources, when falling back to CBRA, if CBRA has configured resources for MSG1 repetition, the resource set associated with MSG1 repetition should also be selected to increase the success rate of random access. Therefore, CFRA to CBRA fallback of MSG1 repetition should be supported. At the same time, the current protocol supports CFRA to CBRA fallback with RedCap. Based on these two points, the resource set selection process for CFRA to CBRA fallback when both MSG1 repetition and RedCap are applied to the random access process should be considered.

[0264] On this basis, embodiments of the present application provide a resource set selection method that is applicable to the MSG1 repetition feature resource set selection process in the CFRA to CBRA fallback scenario, and is also applicable to the resource set selection process when both MSG1 repetition and RedCap are used in the random access process. A detailed description is provided below.

[0265] The resource set selection method provided in the embodiments of the present application, when CFRA to CBRA fallback occurs, that is, when CFRA resources are configured, selects a resource set based on the following two principles: Principle 1: The resource set is associated only with a subset or all of the selected and fallback features. Principle 2: If multiple resource sets are available that meet Principle 1, resource set selection is performed based on feature priority.

[0266] Among them, the selected and fallback feature includes that the feature is currently selected for random access and is fallback. The feature is currently selected for random access, requiring that if the feature is not selected, the resource set associated with the feature will not be selected. The feature is fallback, which means that the feature can fallback from CFRA to CBRA, or it can be understood that the feature supports fallback from CFRA to CBRA, that is, when CFRA resources are configured, the resource set associated with the feature can be selected when selecting a resource set, and the fallback feature can be but is not limited to MSG1repetition and RedCap, to ensure that other features should not be affected in the case of resource fallback. The subset of selected and fallback features refers to one or more features among the selected and fallback features. The resource set is only associated with a subset or all sets of the selected and fallback features, which means that the selected resource set should only be associated with a subset or all sets of the selected and fallback features.

[0267] Based on this, the resource set selection method can also be stated as follows: If none of the configured resource sets meet Principle 1, select a resource set that is not associated with any features. If only one resource set meets Principle 1, select that resource set. If multiple resource sets meet Principle 1, select a resource set based on feature priority.

[0268] It should be noted that the method of selecting resource sets according to feature priority is consistent with the resource set selection method based on feature priority in version 38.321V17.2.0 of the existing technology, including the resource set selection method based on feature priority in subsequent evolved versions, which will not be repeated here.

[0269] In addition, associating a resource set with a feature means that the resource set includes resources associated with the feature or that the resource set is configured with an indication of the feature. For example, the resource set associated with MSG1 repetition 2 includes resources corresponding to MSG1 repetition 2 or that the resource set is configured with an indication of MSG1 repetition 2. When a resource set is associated with a feature, the resource set can be used for the random access procedure for the feature.

[0270] The above is the core concept of the resource set selection method provided in the embodiments of the present application. When implemented, the resource set selection method may have the following execution process. It should be understood that this specific implementation process is merely exemplary and is used to provide a possible execution process of the resource set selection method. Therefore, this specific implementation process should not be understood as limiting the resource set selection method provided in the embodiments of the present application.

[0271] Please refer to Figure 6, which is a flowchart of a resource set selection method provided in an embodiment of the present application. The resource set selection method can be executed only if CFRA resources are configured and the first fallback feature is applied to the current random access. The first fallback feature includes one or more features. For example, the first fallback feature may include one or more of MSG1 repetition and RedCap.

[0272] As shown in Figure 6, the process may include the following steps:

[0273] Optionally, determine whether CFRA resources are configured.

[0274] If no CFRA resource is configured and at least one feature is selected, perform the following steps 2a)-2c):

[0275] 2a) If no resource set associated with the selected feature is configured, a resource set not associated with any feature is selected as the (available) resource set to initiate random access.

[0276] 2b) If there is a resource set associated with all the selected characteristics, the resource set is selected as the available resource set to initiate random access.

[0277] 2c) If there is at least one resource set associated with a subset of all selected characteristics, select a resource set according to the priority of the characteristics to initiate random access. Select a resource set associated with a characteristic with a high priority to initiate random access.

[0278] For example, assuming that the priority of MSG1 repetition is higher than other characteristics, when the resource sets configured by the network device include multiple resource sets, and the multiple resource sets are used to indicate all characteristics that trigger the random access process, and MSG1 repetition is applicable to this random access process, a resource set associated with the highest number of MSG1 repetitions is selected from the multiple resource sets as the available resource set to initiate random access.

[0279] In a case where CFRA resources are configured, a first fallback characteristic is applied to a current random access, wherein the first fallback characteristic includes one or more characteristics.

[0280] S601: When CFRA resources are configured and the first fallback feature is applied to the current random access, traverse each configured resource set to determine whether there is a resource set associated only with a selected subset of the fallback feature or all resource sets. If there is one or more resource sets associated only with all features of the first fallback feature, execute S602a to select the resource set;

[0281] When CFRA resources are configured and the first fallback feature is applied to the current random access, if one or more resource sets are associated with only a subset of all features of the first fallback feature, then S602b is executed to select a resource set based on feature priority. If not, then S602c is executed.

[0282] S602a: Select the resource set.

[0283] S602b: Select a resource set based on feature priority.

[0284] If not, it means that there is no resource set associated only with the selected subset or all sets of fallback characteristics in the configured resource sets, so a resource set not associated with any characteristics can be selected, that is, S602c below.

[0285] S602c: Select a resource set that is not associated with any characteristics.

[0286] In this application, reversible features include MSG1 repetition and RedCap, and non-reversible features include SDT, etc.

[0287] In the present application, the above-mentioned threshold-based selected characteristics for random access, such as the selected non-MSG1 repetition (such as RedCap) and / or MSG1 repetition characteristics) may refer to characteristics that can be applied to the current random access process.

[0288] From S601 to S602c above, it can be seen that if CFRA resources are configured, the following steps 3a) to 3f) are executed:

[0289] 3a) If there is a resource set associated only with RedCap, and RedCap is applied to the current random access process, this resource set is selected to initiate random access.

[0290] 3b) If there is a resource set associated only with MSG1 repetition A, and MSG1 repetition A is applied to the current random access procedure, this resource set is selected to initiate random access.

[0291] 3c) If a resource set suitable for MSG1 repetition is provided for the random access procedure, and the configuration information (rach-ConfigDedated) also indicates the number of Msg1 repetitions and Redcap is applicable to this random access,

[0292] Then, a set of resource sets related to MSG1 repetition, Redcap, and the number of MSG1 repetitions is selected from the multiple sets of resource sets.

[0293] 3d) If a contention-free resource set suitable for MSG1 repetition is provided for the random access procedure and the configuration information (rach-ConfigDedated) also indicates the number of MSG1 repetitions, a resource set only for MSG1 repetition and associated with the number of MSG1 repetitions indicated by the configuration information is selected.

[0294] 3e) If the random access procedure is initiated by a system information (SI) request, and there is a resource set associated with the SI request and MSG1 repetition, and the MSG1 repetition number is provided for the random access procedure, then the resource set associated only with the MSG1 repetition number is selected. For example, if the random access procedure is initiated for an SI request and a first MSG1 repetition number is provided for the random access procedure, then the resource set associated only with the first MSG1 repetition number is selected.

[0295] 3f) If only one resource set is associated with RedCap and MSG1 repetition A, and RedCap and MSG1 repetition A are applied to the current random access procedure, then this resource set is selected to initiate random access. If multiple resource sets are associated with RedCap and MSG1 repetition A, then an available resource set is selected from these multiple resource sets based on the priority of the characteristics to initiate random access.

[0296] Otherwise, if no resource set is selected in any of the above 3a)-3f), a resource set not associated with any characteristics is selected to initiate random access.

[0297] Through the process shown in FIG6 , the user terminal can complete the resource set selection.

[0298] Taking the scenario shown in Figure 7 as an example, the resource set selection method provided in the embodiment of the present application is described here. Please refer to Figure 7, which is a schematic diagram of a scenario for resource set selection provided in the embodiment of the present application. As shown in Figure 7, when the user terminal selects a resource set based on the random access characteristics, there may be three situations for the combination of random access characteristics: case a, RedCap; case b, MSG1 repetition; case c, RedCap and MSG1 repetition. The configuration of the resource set may also have the following three situations: case d, the resource set is associated with RedCap and MSG1 repetition; case e, the resource set is only associated with RedCap; case f, the resource set is only associated with MSG1 repetition. Among them, MSG1 repetition can refer to the number of repetitions A of a certain MSG1 repetition, where A is the number of repetitions. The resource selection process in these three cases is described below:

[0299] Case 1: The resource set configured on the BWP is associated with the RedCap and MSG1 repetitions.

[0300] Scenario 1: The terminal selects the RedCap feature.

[0301] In scenario 1, the configured resource set is CFRA resources, and RedCap is applied to the current random access process. Since the resource set is associated with RedCap and the number of MSG1 repetitions, it is not only associated with the selected feature RedCap, but also with the number of MSG1 repetitions. It does not meet the principle that the resource set is only related to the selected feature as specified in principle 1 above. In this case, the resource set associated with the number of MSG1 repetitions is not selected as the available resource set. Instead, a resource set not associated with any feature is selected as the available resource set to initiate random access.

[0302] Scenario 2: The terminal selects the feature MSG1 repetition A (or MSG1 repetition number A).

[0303] In scenario 2, the configured resource set is CFRA resources, and MSG1 repetition A is applied to the current random access process. Since the resource set is associated with RedCap and the number of MSG1 repetitions, it is not only associated with the selected feature MSG1 repetition A, but also with RedCap. It does not meet the principle specified in principle 1 above that the resource set is only related to the selected feature MSG1 repetition A. In this case, the resource set associated with the number of MSG1repetitions is not selected as the available resource set. Instead, a resource set not associated with any feature is selected as the available resource set to initiate random access.

[0304] Scenario 3: The terminal selects RedCap and MSG1 repetition A as the features.

[0305] In scenario 3, the configured resource set is CFRA resources, and RedCap and MSG1 repetition A are applied to the current random access process. Since the resource set is associated with the number of RedCap and MSG1 repetitions, it is only associated with the selected features RedCap and MSG1 repetition A, and both features can perform fallback from CFRA to CBRA. The above principle 1 is met, so the resource set configured on the BWP is selected as the available resource set.

[0306] It should be understood that in Case 1, the fallback feature includes RedCap and MSG1 repetition. If the resource set configured on the BWP is associated with RedCap and MSG1 repetition A, and the configured resource set is a CFRA resource, if RedCap and MSG1 repetition A are applied to the current random access procedure, this resource set is selected as the available resource set to initiate random access. If RedCap and MSG1 repetition B are applied to the current random access procedure, because the resource set is not associated with MSG1 repetition B, this resource set cannot be selected as the available resource set to initiate random access.

[0307] If the fallback features include RedCap and MSG1 repetition A. The resource set configured on the BWP is associated with RedCap and MSG1 repetition A, and the configured resource set is a CFRA resource, if RedCap and MSG1 repetition A are applied to the current random access procedure, this resource set is selected as the available resource set to initiate random access; if RedCap and MSG1 repetition B are applied to the current random access procedure, because MSG1 repetition B cannot be fallen back, this resource set cannot be selected as the available resource set to initiate random access.

[0308] When the resource set configuration is case d in FIG. 7 , ie, the resource set is associated only with RedCap and MSG1 repetition, and the combination of random access characteristics is case a, ie, RedCap, the user terminal cannot select the resource set.

[0309] In other words, when CFRA is configured, RedCap is applied to the current random access procedure, and there is a resource set associated only with RedCap and MSG1 repetition number, this resource set cannot be selected.

[0310] This is because the currently selected and fallback feature is only RedCap, but the resource set is also associated with MSG1repetition, which cannot meet Principle 1 of the resource set selection method provided in the embodiment of this application. Therefore, this resource set cannot be selected, and a resource set that is not associated with any feature should be selected.

[0311] When the resource set configuration is case d in FIG. 7 , ie, the resource set is associated only with RedCap and MSG1 repetition, and the combination of random access characteristics is case b, ie, MSG1 repetition, the user terminal cannot select the resource set.

[0312] In other words, when CFRA is configured, MSG1 repetition is applied to the current random access procedure, and there is a resource set associated only with RedCap and MSG1 repetition number, this resource set cannot be selected.

[0313] This is because the only currently selected and reversible feature is MSG1 repetition, but the resource set is also associated with RedCap, which cannot meet Principle 1 of the resource set selection method provided in the embodiment of this application. Therefore, this resource set cannot be selected, and a resource set that is not associated with any feature should be selected.

[0314] When the resource set configuration is case d in FIG7 , ie, the resource set is associated only with RedCap and MSG1 repetition, and the combination of random access characteristics is case c, ie, RedCap and MSG1 repetition, the user terminal should select this resource set.

[0315] In other words, when CFRA is configured, and RedCap and MSG1 repetition are applied to the current random access procedure, and there is a resource set associated only with RedCap and MSG1 repetition repetition number, the user terminal should select this resource set.

[0316] This is because the currently selected and reversible features include MSG1 repetition and RedCap, and the resource set is only associated with RedCap and MSG1 repetition, which can meet Principle 1 of the resource set selection method provided in the embodiment of the present application, so this resource set should be selected.

[0317] Case 2: The resource set configured on the BWP is associated with the RedCap.

[0318] Scenario 1: The terminal selects the RedCap feature.

[0319] In this scenario 1, the configured resource set is CFRA resources, and RedCap is applied to the current random access process. Since the resource set is associated with RedCap and is only associated with the selected characteristic RedCap, the principle that the resource set is only related to the selected characteristic specified in the above principle 1 is met. At this time, the resource set associated only with RedCap is selected as the available resource set to initiate random access.

[0320] Scenario 2: The terminal selects the MSG1 repetition feature.

[0321] In scenario 2, the configured resource set is CFRA resources, and MSG1 repetition is applied to the current random access process. Since the resource set is associated with RedCap, it is not associated with the selected feature MSG1 repetition, that is, there is no resource set associated with the feature MSG1 repetition. At this time, the resource set that is not associated with any feature is selected as the available resource set to initiate random access.

[0322] Scenario 3: The terminal selects RedCap and MSG1 repetition features

[0323] In scenario 3, the configured resource set is CFRA resources, and RedCap and MSG1 repetition are applied to the current random access process. Since the resource set is associated with RedCap, the resource set is only associated with the subset RedCap in the selected characteristics. At this time, principle 1 is met, and the resource set associated only with RedCap is selected as the available resource set to initiate random access.

[0324] When the configuration of the resource set is case e in FIG. 7 , ie, the resource set is associated only with RedCap, and the combination of random access characteristics is case a, ie, RedCap, the user terminal should select this resource set.

[0325] In other words, when CFRA is configured, and RedCap is applied to the current random access procedure, and there is a resource set associated only with RedCap, this resource set should be selected.

[0326] This is because the currently selected and fallback feature is only RedCap, and the resource set is only associated with RedCap, which meets Principle 1 of the resource set selection method provided in the embodiment of the present application, so this resource set should be selected.

[0327] When the resource set configuration is case e in FIG. 7 , ie, the resource set is associated only with RedCap, and the combination of random access characteristics is case b, ie, MSG1 repetition, the user terminal cannot select the resource set.

[0328] In other words, when CFRA is configured, and MSG1 repetition is applied to the current random access procedure, and there is a resource set associated only with RedCap, this resource set cannot be selected.

[0329] This is because the currently selected and reversible feature is only MSG1 repetition, but the resource set is only associated with RedCap, which cannot meet Principle 1 of the resource set selection method provided in the embodiment of this application. Therefore, this resource set cannot be selected, and a resource set that is not associated with any feature should be selected.

[0330] When the resource set configuration is case e in FIG. 7 , ie, the resource set is associated only with RedCap, and the combination of random access characteristics is case c, ie, RedCap and MSG1 repetition, the user terminal may select the resource set.

[0331] In other words, when CFRA is configured, and RedCap and MSG1 repetition are applied to the current random access procedure, and there is a resource set associated only with RedCap, the user terminal should select this resource set.

[0332] This is because the currently selected and reversible characteristics include MSG1 repetition and RedCap, and the resource set is only associated with RedCap, that is, the resource set is only associated with a subset of the selected and reversible characteristics. Therefore, it can meet Principle 1 of the resource set selection method provided in the embodiment of the present application, and this resource set should be selected.

[0333] When the resource set configuration is case f in Figure 7, that is, the resource set is associated only with MSG1 repetition, and the combination of random access characteristics is case a, that is, RedCap, the user terminal cannot select this resource set, but should select a resource set that is not associated with any characteristics.

[0334] In other words, when CFRA is configured, RedCap is applied to the current random access procedure, and there is a resource set associated only with MSG1 repetition, this resource set cannot be selected, and a resource set not associated with any feature should be selected.

[0335] This is because the currently selected and fallback feature is only RedCap, and the resource set is only associated with MSG1 repetition, which cannot meet Principle 1 of the resource set selection method provided in the embodiment of this application. Therefore, this resource set cannot be selected, and a resource set that is not associated with any feature should be selected.

[0336] When the resource set configuration is case f in FIG. 7 , ie, the resource set is associated only with MSG1 repetition, and the combination of random access characteristics is case b, ie, MSG1 repetition, the user terminal should select this resource set.

[0337] In other words, when CFRA is configured, and MSG1 repetition is applied to the current random access procedure, and there is a resource set associated only with MSG1 repetition, this resource set should be selected.

[0338] This is because the currently selected and reversible feature is only MSG1 repetition, and the resource set is only associated with MSG1 repetition, which meets Principle 1 of the resource set selection method provided in the embodiment of the present application, so this resource set should be selected.

[0339] Case 3: The resource set configured on the BWP is only related to the MSG1 repetition.

[0340] Scenario 1: The terminal selects the RedCap feature.

[0341] In scenario 1, the configured resource set is CFRA resources, and RedCap is applied to the current random access process. Since the resource set is associated with MSG1 repetition and is not associated with the selected feature RedCap, it does not meet the principle that the resource set is only related to the selected feature as specified in principle 1 above. In this case, a resource set that is not associated with any feature is selected as the available resource set to initiate random access.

[0342] Scenario 2: The terminal selects the MSG1 repetition feature.

[0343] In scenario 2, the configured resource set is CFRA resources, and MSG1 repetition is applied to the current random access process. Since the resource set is only associated with MSG1 repetition and is associated with the selected feature MSG1 repetition, it meets the principle that the resource set is only related to the selected feature specified in the above principle 1. At this time, the resource set associated only with MSG1 repetition is selected as the available resource set to initiate random access.

[0344] Scenario 3: The terminal selects RedCap and MSG1 repetition features.

[0345] In scenario 3, the configured resource set is CFRA resources, and RedCap and MSG1 repetition are applied to the current random access process. Since the resource set is only associated with MSG1 repetition, the resource set is only associated with the subset MSG1 repetition in the selected characteristics. At this time, principle 1 is met and the resource set associated only with MSG1 repetition is selected as the available resource set to initiate random access.

[0346] From the above description, it can be seen that in the above scenario 3, when situation 2 and situation 3 exist at the same time, that is, when there are resources only associated with MSG1 repetition and resources only associated with Redcap at the same time, the resource set associated only with MSG1 repetition can be selected as the available resource set to initiate random access, or the resource set associated only with RedCap can be selected as the available resource set to initiate random access. At this time, there are two resource sets available, which can be selected according to the priority of the characteristics. For example, if the priority of RedCap is higher than the priority of MSG1 repetition, the resource set associated only with RedCap is selected as the available resource set to initiate random access. Conversely, if the priority of MSG1 repetition is higher than the priority of RedCap, the resource set associated only with MSG1 repetition is selected to initiate random access.

[0347] When the resource set configuration is case f in FIG. 7 , ie, the resource set is associated only with MSG1 repetition, and the combination of random access characteristics is case c, ie, RedCap and MSG1 repetition, the user terminal should select this resource set.

[0348] In other words, when CFRA is configured, and RedCap and MSG1 repetition are applied to the current random access procedure, and there is a resource set associated only with MSG1 repetition, the user terminal should select this resource set.

[0349] This is because the currently selected and reversible characteristics include MSG1 repetition and RedCap, and the resource set is only associated with MSG1 repetition, that is, the resource set is only associated with a subset of the selected and reversible characteristics. Therefore, it can meet Principle 1 of the resource set selection method provided in the embodiment of the present application, and this resource set should be selected.

[0350] When the configuration of the resource set includes case e and case f in Figure 7, that is, the configuration of the resource set includes resource set x associated only with MSG1repetition and resource set y associated only with RedCap, the combination of random access characteristics is case c, that is, RedCap and MSG1 repetition, resource set x and resource set y both meet principle 1 of the resource set selection method provided in the embodiment of the present application, and therefore the resource set can be selected according to principle 2 in the embodiment of the present application, that is, according to the priority of MSG1 repetition and RedCap. For example, when the priority of MSG1 repetition is higher than RedCap, resource set x should be selected. When the priority of MSG1 repetition is lower than RedCap, resource set y should be selected.

[0351] In other words, when CFRA is configured, and RedCap and MSG1 repetition are applied to the current random access procedure, and there is both a resource set x associated only with MSG1 repetition and a resource set y associated only with RedCap, the user terminal should select the resource set based on the priority of MSG1 repetition and RedCap. In Figure 7 above, MSG1 repetition can be a specific number of repetitions, for example, MSG1 repetition A, which means MSG1 is repeated A times.

[0352] Please refer to Figure 8, which is a schematic diagram of the selection results of a resource set selection method provided in an embodiment of the present application. As shown in Figure 8, when CFRA is configured and RedCap is applied to the current random access process, the user terminal should select the resource set associated only with RedCap, and if not, select the resource set that is not associated with any characteristics. When CFRA is configured and MSG1 repetition is applied to the current random access process, the user terminal should select the resource set associated only with MSG1 repetition, and if not, select the resource set that is not associated with any characteristics. When CFRA is configured and RedCap and MSG1 repetition are applied to the current random access process, the user terminal should select the resource set associated only with RedCap, or the resource set associated only with MSG1repetition, or the resource set associated only with RedCap and MSG1 repetition. If neither is available, select the resource set that is not associated with any characteristics.

[0353] It should be noted that, in some possible implementations, the fallback characteristics may include RedCap and MSG1 repetition, and MSG1 repetition includes all repetitions, that is, all repetitions can be rolled back. In this way, when RedCap and MSG1 repetition A are selected in the current random access process, and there is a resource set associated only with RedCap and MSG1 repetition A, the user terminal should select this resource set. When the RedCap and MSG1 repetition characteristics are selected in the current random access process, the repetition number is B, and there is a resource set associated with RedCap and MSG1 repetition A, since this resource set is not associated with MSG1 repetition B, the user terminal should not select this resource set.

[0354] In some other possible implementations, the fallback characteristics may include RedCap and MSG1 repetition A, that is, only MSG1 repetition A can be rolled back, and other MSG1 repetition repetitions cannot be rolled back. In this way, when RedCap and MSG1 repetition A are selected in the current random access procedure, and there is a resource set associated with RedCap and MSG1 repetition A, the user terminal should select this resource set. When RedCap and MSG1 repetition B are selected in the current random access procedure, and there is a resource set associated with RedCap and MSG1 repetition A, since MSG1 repetition B is a non-fallback characteristic, the user terminal should not select this resource set.

[0355] The above mainly introduces the solution provided by the embodiment of the present application from the perspective of interaction between various nodes. It is understandable that the method provided by the present application can also be collectively referred to as a communication method or a random access method. Specifically, according to the above, the communication method may include:

[0356] Acquire a random access resource; the random access resource includes a random access resource of MSG1 repetition, the MSG1 repetition includes n types of MSG1 repetition times, where n is an integer greater than or equal to 1;

[0357] A random access process is initiated according to the random access resource.

[0358] In a possible implementation, the acquiring of the random access resource includes: selecting a bandwidth part BWP, and configuring the random access resource repeated by the MSG1 on the selected BWP;

[0359] The initiating a random access process according to the random access resource includes: selecting a random access resource to initiate a random access process based on a threshold corresponding to the number of repetitions of MSG1.

[0360] In a possible implementation, configuring the random access resources repeated by MSG1 on the selected BWP includes: configuring the random access resources repeated by MSG1 and configuring random access resources not repeated by MSG1 on the selected BWP; or, configuring only the random access resources repeated by MSG1 on the selected BWP.

[0361] In a possible implementation, if a threshold corresponding to the number of MSG1 repetitions is configured and the measured signal quality is less than the threshold corresponding to the number of MSG1 repetitions, the random access process is initiated by selecting the number of MSG1 repetitions.

[0362] In one possible implementation, the MSG1 repetition number includes MSG1 repetition number 2, MSG1 repetition number 4, and MSG1 repetition number 8;

[0363] If the threshold corresponding to MSG1 repetition number 8 is configured and the measured signal quality is less than the threshold corresponding to MSG1 repetition number 8, the random access process is initiated by selecting the MSG1 repetition number 8;

[0364] If the threshold corresponding to MSG1 repetition number 4 is configured and the measured signal quality is less than the threshold corresponding to MSG1 repetition number 4, the random access process is initiated by selecting the MSG1 repetition number 4;

[0365] If the threshold corresponding to MSG1 repetition number 2 is configured and the measured signal quality is less than the threshold corresponding to MSG1 repetition number 2, the MSG1 repetition number 2 is selected to initiate a random access process.

[0366] In a possible implementation, when both the MSG1 repetition random access resources and non-MSG1 repetition random access resources are configured on the selected BWP, if the measured signal quality is greater than a threshold corresponding to any MSG1 repetition number, non-MSG1 repetition is selected.

[0367] In a possible implementation, when only random access resources of MSG1 repetitions are configured on the selected BWP, if the measured signal quality is greater than a threshold corresponding to any MSG1 repetition number, the MSG1 repetition number with the smallest repetition number is selected.

[0368] In one possible implementation, the initiating a random access process based on the random access resource includes: when a non-competitive random access resource is configured, selecting a random access resource based on a first fallback characteristic to initiate a random access process; wherein the first fallback characteristic includes at least one of RedCap and MSG1 repetition.

[0369] In one possible implementation, the selecting of random access resources according to the first fallback characteristic to initiate a random access process includes: when the first fallback characteristic is applied to the current random access process, selecting random access resources associated only with the first fallback characteristic to initiate a random access process.

[0370] In one possible implementation, the selecting of random access resources according to the first fallback characteristic to initiate a random access process includes: when the first fallback characteristic is applied to the current random access process, if there is no random access resource in the configured random access resources that is only associated with the first fallback characteristic, then selecting a random access resource that is not associated with any characteristic to initiate the random access process.

[0371] In one possible implementation, the random access process is initiated by selecting a random access resource based on the first fallback characteristic, including: the first fallback characteristic is RedCap and MSG1 repetition, and a random access resource associated only with the RedCap and the MSG1 repetition is selected to initiate the random access process, the random access resource is associated with the first MSG1 repetition number, and the first MSG1 repetition number is the MSG1 repetition number of the current random access process.

[0372] In one possible implementation, the random access process is initiated by selecting a random access resource based on the first fallback characteristic, including: the first fallback characteristic is the repetition of RedCap and MSG1, if there is no random access resource in the configured random access resources that is only associated with the RedCap and the MSG1 repetition, then a random access resource that is not associated with any characteristic is selected to initiate the random access process.

[0373] In one possible implementation, the selecting of random access resources to initiate a random access process according to the first fallback characteristic includes: when the first fallback characteristic is MSG1 repetition, selecting a random access resource associated only with the MSG1 repetition to initiate a random access process, the random access resource is associated with the first MSG1 repetition number, and the first MSG1 repetition number is the MSG1 repetition number of the current random access process.

[0374] In one possible implementation, the selecting of random access resources to initiate a random access process based on the first fallback characteristic includes: when the first fallback characteristic is MSG1 repetition, if there is no random access resource in the configured random access resources that is only associated with the MSG1 repetition, then selecting a random access resource that is not associated with any characteristic to initiate the random access process.

[0375] In one possible implementation, the initiating a random access process based on the random access resource includes: when non-competitive random access resources are configured, selecting random access resources based on a subset of a first fallback characteristic to initiate a random access process; the first fallback characteristic includes at least one of RedCap and MSG1 repetition.

[0376] In one possible implementation, the selecting of random access resources based on a subset of the first fallback characteristic to initiate a random access process includes: when the first fallback characteristic is applied to the current random access process, selecting random access resources associated only with a subset of the first fallback characteristic to initiate a random access process.

[0377] In a possible implementation, initiating a random access process according to the random access resource includes: when at least one random access resource is available, selecting a random access resource according to a characteristic priority to initiate a random access process.

[0378] In one possible implementation, the first fallback characteristic is RedCap and the number of repetitions of the first MSG1, and the available random access resources include at least one of the following random access resources:

[0379] A random access resource associated only with the RedCap and the first MSG1 repetition number; or

[0380] Random access resources associated only with the RedCap; or

[0381] The random access resource is associated only with the first MSG1 repetition number, where the first MSG1 repetition number is the MSG1 repetition number of the current random access process.

[0382] In one possible implementation, the selecting of random access resources according to characteristic priority to initiate a random access process includes: when the random access resources associated with the RedCap and the first MSG1 repetition number are available, selecting the random access resources associated with the RedCap and the first MSG1 repetition number to initiate a random access process.

[0383] In one possible implementation, the selecting of random access resources according to the characteristic priority to initiate a random access procedure includes: when the random access resources associated with the RedCap and the first MSG1 repetition number are unavailable, selecting only the random access resources associated with the RedCap to initiate a random access procedure; or

[0384] A random access process is initiated by selecting a random access resource associated only with the first MSG1 repetition number.

[0385] In one possible implementation, the priority of RedCap is higher than the priority of MSG1 repetition, and the selecting of random access resources according to the priority of characteristics to initiate a random access process includes:

[0386] According to the feature priority, only the random access resources associated with the RedCap are selected to initiate the random access process; or, only the random access resources associated with the first MSG1 repetition number are selected to initiate the random access process, where the first MSG1 repetition number is the MSG1 repetition number of the current random access process.

[0387] The above mainly introduces the solution provided by the embodiment of the present application from the perspective of interaction between each node. It is understandable that each node, such as a terminal, a network device, includes a hardware structure and / or software module corresponding to the execution of each function in order to realize the above functions. Those skilled in the art should easily appreciate that, in combination with the algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in a hardware or computer software driven hardware manner depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0388] In the embodiment of the present application, the user equipment can be divided into functional modules according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical functional division. In actual implementation, there may be other division methods.

[0389] Figure 9 shows a structural diagram of a communication device 900. The communication device 900 may be a user terminal, a chip within a user terminal, or a system-on-chip. The communication device 900 may be configured to perform the functions of the user terminal described in the above embodiments. As one possible implementation, the communication device 900 shown in Figure 9 includes a transmitting unit 901 and a receiving unit 902.

[0390] The sending unit 901 is configured to initiate random access to a network-side device.

[0391] The receiving unit 902 is configured to receive configuration information from a network-side device.

[0392] Specifically, all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module and will not be repeated here.

[0393] As another possible implementation, the communication device 900 shown in FIG9 includes a processing module and a communication module. The processing module is used to control and manage the operations of the communication device 900. For example, the processing module can support the communication device 900 in performing control functions. The communication module can integrate the functions of the transmitting unit 901 and the receiving unit 902, and can be used to support the communication device 900 in executing the various steps of the method embodiment and communicating with other network entities, such as with network-side devices. The communication device 900 may also include a storage module for storing program code and data of the communication device 900.

[0394] The processing module may be a processor or controller. It may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors. The communication module may be a transceiver circuit or a communication interface. The storage module may be a memory.

[0395] The embodiments of the present application also provide a computer-readable storage medium. All or part of the processes in the above-mentioned method embodiments can be completed by a computer program to instruct the relevant hardware. The program can be stored in the above-mentioned computer-readable storage medium. When the program is executed, it can include the processes of the above-mentioned method embodiments. The computer-readable storage medium can be a terminal in any of the above-mentioned embodiments, such as: an internal storage unit including a data sending end and / or a data receiving end, such as a hard disk or memory of the terminal. The above-mentioned computer-readable storage medium can also be an external storage device of the above-mentioned terminal, such as a plug-in hard disk equipped on the above-mentioned terminal, a smart memory card (smart media card, SMC), a secure digital (secure digital, SD) card, a flash card (flash card), etc. Further, the above-mentioned computer-readable storage medium can also include both the internal storage unit of the above-mentioned terminal and an external storage device. The above-mentioned computer-readable storage medium is used to store the above-mentioned computer program and other programs and data required by the above-mentioned terminal. The above-mentioned computer-readable storage medium can also be used to temporarily store data that has been output or is to be output.

[0396] It should be noted that the terms "first" and "second" in the specification, claims, and drawings of this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products, or devices.

[0397] It should be understood that in this application, "at least one (item)" refers to one or more, "more than one" refers to two or more, "at least two (items)" refers to two or three and more than three, and "and / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0398] It should be understood that in the embodiments of the present application, "B corresponding to A" means that B is associated with A. For example, B can be determined based on A. It should also be understood that determining B based on A does not mean determining B based solely on A; B can also be determined based on A and / or other information. In addition, the "connection" in the embodiments of the present application refers to various connection methods, such as direct connection and indirect connection, to achieve communication between devices, and the embodiments of the present application do not impose any limitations on this.

[0399] Unless otherwise specified, the "transmission" (transmit / transmission) appearing in the embodiments of the present application refers to bidirectional transmission, including the actions of sending and / or receiving. Specifically, the "transmission" in the embodiments of the present application includes the sending of data, the receiving of data, or the sending of data and the receiving of data. In other words, the data transmission here includes uplink and / or downlink data transmission. Data may include channels and / or signals, uplink data transmission is uplink channel and / or uplink signal transmission, and downlink data transmission is downlink channel and / or downlink signal transmission. The "network" and "system" appearing in the embodiments of the present application express the same concept, and the communication system is the communication network.

[0400] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0401] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the modules or units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0402] The units described as separate components may or may not be physically separate, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple places. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0403] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0404] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a device (which can be a single-chip microcomputer, chip, etc.) or a processor to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

[0405] The above is only a specific embodiment of the present application, but the scope of protection of this application is not limited to this. Any changes or substitutions within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: The method comprises: Acquire a random access resource; the random access resource includes a random access resource of MSG1 repetition, the MSG1 repetition includes n types of MSG1 repetition times, and n is an integer greater than or equal to 1; A random access process is initiated according to the random access resource.

2. The method according to claim 1, characterized in that The acquiring of random access resources includes: Select a bandwidth part BWP, and configure the repeated random access resources of MSG1 on the selected BWP; The initiating a random access process according to the random access resource includes: Based on the threshold corresponding to the number of repetitions of MSG1, a random access resource is selected to initiate a random access process.

3. The method according to claim 2, characterized in that The random access resource for configuring the MSG1 repetition on the selected BWP includes: The selected BWP is configured with the random access resources repeated by MSG1 and the random access resources not repeated by MSG1; or, Only the random access resources repeated by MSG1 are configured on the selected BWP.

4. The method according to any one of claims 1 to 3, characterized in that: If a threshold corresponding to the number of MSG1 repetitions is configured, and the measured signal quality is less than the threshold corresponding to the number of MSG1 repetitions, the MSG1 repetition number is selected to initiate a random access process.

5. The method according to claim 4, characterized in that The MSG1 repetition number includes MSG1 repetition number 2, MSG1 repetition number 4 and MSG1 repetition number 8; If the threshold corresponding to the number of repetitions of MSG1 of 8 is configured, and the measured signal quality is less than the threshold corresponding to the number of repetitions of MSG1 of 8, the random access process is initiated by selecting the number of repetitions of MSG1 of 8; If the threshold corresponding to MSG1 repetition number 4 is configured, and the measured signal quality is less than the threshold corresponding to MSG1 repetition number 4, the MSG1 repetition number 4 is selected to initiate the random access process; If the threshold corresponding to MSG1 repetition number 2 is configured, and the measured signal quality is less than the threshold corresponding to MSG1 repetition number 2, the MSG1 repetition number 2 is selected to initiate a random access process.

6. The method according to claim 3, characterized in that In the case where the random access resources of the MSG1 repetition and the random access resources of non-MSG1 repetition are configured on the selected BWP, if the measured signal quality is greater than a threshold corresponding to any MSG1 repetition number, non-MSG1 repetition is selected.

7. The method according to claim 3, characterized in that In the case where only random access resources of MSG1 repetitions are configured on the selected BWP, if the measured signal quality is greater than the threshold corresponding to any MSG1 repetition number, the MSG1 repetition number with the smallest repetition number is selected.

8. The method according to claim 1, characterized in that The initiating a random access process according to the random access resource includes: In a case where a non-contention random access resource is configured, selecting a random access resource according to a first fallback characteristic to initiate a random access process; Wherein, the first fallback characteristic includes at least one of RedCap and MSG1 repetition.

9. The method according to claim 8, characterized in that The selecting a random access resource according to the first fallback characteristic to initiate a random access process includes: In the case where the first fallback characteristic is applied to the current random access procedure, a random access resource associated only with the first fallback characteristic is selected to initiate a random access procedure.

10. The method according to claim 8 or 9, characterized in that: The selecting a random access resource according to the first fallback characteristic to initiate a random access process includes: In the case where the first fallback characteristic is applied to the current random access process, if there is no random access resource associated only with the first fallback characteristic in the configured random access resources, a random access resource not associated with any characteristic is selected to initiate the random access process.

11. The method according to claim 8, characterized in that The selecting a random access resource according to the first fallback characteristic to initiate a random access process includes: The first fallback feature is RedCap and MSG1 repetition, and a random access resource only associated with the RedCap and the MSG1 repetition is selected to initiate a random access process. The random access resource is associated with the first MSG1 repetition number, and the first MSG1 repetition number is the MSG1 repetition number of the current random access process.

12. The method according to claim 11, characterized in that The selecting a random access resource according to the first fallback characteristic to initiate a random access process includes: The first fallback characteristic is the repetition of RedCap and MSG1. If there is no random access resource that is only associated with the RedCap and the MSG1 repetition in the configured random access resources, a random access resource that is not associated with any characteristic is selected to initiate a random access process.

13. The method according to claim 8, characterized in that The selecting a random access resource according to the first fallback characteristic to initiate a random access process includes: When the first fallback characteristic is MSG1 repetition, a random access resource associated only with the MSG1 repetition is selected to initiate a random access process, the random access resource is associated with a first MSG1 repetition number, and the first MSG1 repetition number is the MSG1 repetition number of the current random access process.

14. The method according to claim 13, characterized in that The selecting a random access resource according to the first fallback characteristic to initiate a random access process includes: In the case where the first fallback characteristic is MSG1 repetition, if there is no random access resource associated only with the MSG1 repetition in the configured random access resources, a random access resource not associated with any characteristic is selected to initiate a random access process.

15. The method according to claim 1, characterized in that The initiating a random access process according to the random access resource includes: In a case where non-contention random access resources are configured, selecting random access resources according to a subset of the first fallback characteristic to initiate a random access procedure; Wherein, the first fallback characteristic includes at least one of RedCap and MSG1 repetition.

16. The method according to claim 15, characterized in that The selecting a random access resource according to a subset of the first fallback characteristic to initiate a random access process includes: In a case where the first fallback characteristic is applied to a current random access procedure, a random access resource associated only with a subset of the first fallback characteristic is selected to initiate a random access procedure.

17. The method according to claim 1, characterized in that The initiating a random access process according to the random access resource includes: When at least one random access resource is available, a random access resource is selected according to a characteristic priority to initiate a random access process.

18. The method according to claim 17, characterized in that The first fallback characteristic is RedCap and the number of repetitions of the first MSG1, and the available random access resources include at least one of the following random access resources: A random access resource associated only with the RedCap and the first MSG1 repetition number; or Random access resources associated only with the RedCap; or A random access resource associated only with a first MSG1 repetition number, where the first MSG1 repetition number is the MSG1 repetition number of the current random access process.

19. The method according to claim 18, characterized in that The selecting of random access resources according to the characteristic priority to initiate a random access process includes: In a case where the random access resources associated with the RedCap and the first MSG1 repetition number are available, the random access resources associated with the RedCap and the first MSG1 repetition number are selected to initiate a random access process.

20. The method according to claim 18, characterized in that The selecting random access resources according to the characteristic priority to initiate a random access process includes: In the case that the random access resource associated with the RedCap and the first MSG1 repetition number is unavailable, selecting the random access resource associated only with the RedCap to initiate a random access procedure; or, A random access process is initiated by selecting a random access resource associated only with the first MSG1 repetition number.

21. The method according to claim 17, characterized in that The priority of RedCap is higher than the priority of MSG1 repetition, and the random access resource is selected according to the characteristic priority to initiate the random access process, including: According to the feature priority, the random access resource associated only with the RedCap is selected to initiate the random access process; or, the random access resource associated only with the first MSG1 repetition number is selected to initiate the random access process, and the first MSG1 repetition number is the MSG1 repetition number of the current random access process.

22. A threshold configuration method, characterized in that: Applied to a network device, the method comprises: Sending a first threshold and a second threshold, wherein the first threshold is used to distinguish whether to repeat MSG1, and the second threshold is used to distinguish the number of repetitions of MSG1; or, A third threshold is sent, where the third threshold is a corresponding threshold configured for different numbers of repetitions of MSG1.

23. The method according to claim 22, characterized in that The first threshold and the second threshold are configured by a first configuration parameter, wherein the first configuration parameter includes corresponding thresholds configured for different MSG1 repetition times, wherein the first threshold is a threshold corresponding to the lowest repetition number or the lowest coverage level repetition number among the different MSG1 repetition numbers; The second threshold is a threshold of the repetition numbers among the different MSG1 repetition numbers except the lowest MSG1 repetition number.

24. The method according to claim 22, characterized in that The first threshold is configured by a second configuration parameter, and the second threshold is configured by a third configuration parameter.

25. The method according to any one of claims 22 to 24, characterized in that: The first threshold is configured only when a non-MSG1 repeated RA resource set is available.

26. The method according to any one of claims 22 to 24, characterized in that: When the configured number of repetitions of MSG1 is n, the second threshold number is n-1.

27. The method according to claim 22, characterized in that When the configured number of repetitions of MSG1 is n, the number of the third threshold is n.

28. A communication device, characterized in that: The communication device comprises a processor and a communication interface, and the processor and the communication interface are used to support the communication device to execute the method according to any one of claims 1-21; or to execute the method according to any one of claims 22-27.

29. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a computer, the computer executes the method according to any one of claims 1 to 21; or executes the method according to any one of claims 22 to 27.

30. A computer program product, characterized in that The computer program product comprises computer instructions, and when the computer instructions are executed on a computer, the computer is caused to execute the method according to any one of claims 1 to 21; or execute the method according to any one of claims 22 to 27.

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