Random access method and apparatus

Abstract

Disclosed in embodiments of the present disclosure are a random access method and apparatus. The random access method comprises: determining a coverage enhancement (CE) level; determining a narrowband physical random access channel (NPRACH) resource set corresponding to each feature or feature combination under the CE level, wherein there are one or more features or feature combinations; and on the basis of a capability of a terminal and a first rule, determining a first resource from at least one NPRACH resource set corresponding to the CE level, wherein the first resource is used for the terminal to initiate a random access process. Thus, when performing communication within a system supporting multiple features or feature combinations, a terminal can determine a unique resource to initiate random access, the terminal effectively improves the resource utilization and spectral efficiency while realizing uplink coverage enhancement, such that system capacity expansion can be realized, and more users can be supported to perform uplink transmission, thereby improving the system communication efficiency and system capacity, and ensuring the channel transmission performance.

Description

Random access method and apparatus TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and in particular relates to a random access method and apparatus. BACKGROUND

[0002] Non-terrestrial Network (NTN) is an important technology, which provides wireless resources through satellites (or unmanned aerial vehicles) instead of ground base stations. For Internet of Things (IoT)-NTN, due to the limited frequency band resources for NTN and the limited transmission power of terminals, in order to serve more users at the same time, uplink capacity enhancement is considered, and the main technologies used to achieve the uplink capacity enhancement can include: Orthogonal Cover Code (OCC), and Early Data Transmission (EDT) without Message 1 (Msg1) / Message 2 (Msg2) (EDT without Msg1 / 2), etc.

[0003] SUMMARY

[0004] Embodiments of the present disclosure provide a random access method and apparatus.

[0005] In a first aspect, a random access method is provided, which is performed by a terminal, and the method comprises:

[0006] determining a coverage enhancement (CE) level;

[0007] determining a resource set of a narrowband physical random access channel (NPRACH) corresponding to each characteristic or characteristic combination at the CE level, wherein the number of the characteristic or characteristic combination is one or more;

[0008] determining a first resource from at least one NPRACH resource set corresponding to the CE level based on a capability of the terminal and a first rule, wherein the first resource is used for the terminal to initiate a random access procedure.

[0009] In a second aspect, a random access method is provided, which is performed by a network device, and the method comprises:

[0010] sending a first parameter to a terminal, wherein the first parameter is used to indicate a number of coverage enhancement (CE) levels of a current serving cell;

[0011] send second information to the terminal, the second information being used for configuring a resource set of a corresponding narrowband physical random access channel (NPRACH) under each of the CE levels;

[0012] The NPRACH resource set includes a first resource, the first resource being determined by the terminal based on capability and a first rule, and the first resource being used for the terminal to initiate a random access procedure.

[0013] A third aspect of the present disclosure provides a terminal, and the terminal comprises:

[0014] a processing module configured to determine a coverage enhancement (CE) level;

[0015] The processing module is further configured to determine a resource set of a corresponding narrowband physical random access channel (NPRACH) under each of the CE levels for each of the characteristics or characteristic combinations, the number of the characteristics or characteristic combinations being one or more.

[0016] The processing module is further configured to determine a first resource from at least one of the NPRACH resource sets corresponding to the CE level based on capability of the terminal and a first rule, the first resource being used for the terminal to initiate a random access procedure.

[0017] A fourth aspect of the present disclosure provides a network device, and the network device comprises:

[0018] a transceiver configured to send a first parameter to a terminal, the first parameter being used to indicate a number of coverage enhancement (CE) levels of a current serving cell;

[0019] The transceiver is further configured to send second information to the terminal, the second information being used for configuring a resource set of a corresponding narrowband physical random access channel (NPRACH) under each of the CE levels;

[0020] The NPRACH resource set includes a first resource, the first resource being determined by the terminal based on capability and a first rule, and the first resource being used for the terminal to initiate a random access procedure.

[0021] The scheme provided by the embodiments of the present disclosure includes: determining a coverage enhancement, CE, level; determining a resource set of a narrowband physical random access channel, NPRACH, corresponding to each characteristic or characteristic combination at the CE level, the number of the characteristics or characteristic combinations being one or more; determining a first resource from at least one NPRACH resource set corresponding to the CE level based on a capability of a terminal and a first rule, the first resource being used for the terminal to initiate a random access process; and enabling the terminal to determine a unique resource to initiate random access when the terminal communicates in a system supporting multiple characteristics or characteristic combinations, effectively improving resource utilization and spectrum efficiency while enabling the terminal to implement uplink coverage enhancement, enabling system expansion, enabling more users to perform uplink transmission, improving system communication efficiency and system capacity, and ensuring channel transmission performance. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the background art, the drawings needed to be used in the embodiments of the present disclosure or the background art will be described below.

[0023] FIG. 1A is a schematic diagram of an architecture of a communication system provided by an embodiment of the present disclosure;

[0024] FIG. 2A is a schematic diagram of an interaction of a random access method provided by an embodiment of the present disclosure;

[0025] FIGS. 3A-3B are schematic diagrams of a flow of a random access method provided by an embodiment of the present disclosure;

[0026] FIGS. 4A-4B are schematic diagrams of a flow of a random access method provided by an embodiment of the present disclosure;

[0027] FIG. 5A is a schematic diagram of a structure of a terminal provided by an embodiment of the present disclosure;

[0028] FIG. 5B is a schematic diagram of a structure of a network device provided by an embodiment of the present disclosure;

[0029] FIG. 6A is a schematic diagram of a structure of a communication device provided by an embodiment of the present disclosure;

[0030] FIG. 6B is a schematic diagram of a structure of a chip provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0031] The embodiments of the present disclosure provide a random access method and device.

[0032] In a first aspect, the embodiments of the present disclosure provide a random access method, and the method includes:

[0033] determining a coverage enhancement, CE, level;

[0034] determining a resource set of a narrowband physical random access channel (NPRACH) corresponding to each feature or feature combination at the CE level, wherein the number of the features or feature combinations is one or more;

[0035] determining a first resource from the at least one NPRACH resource set corresponding to the CE level based on the capability of the terminal and the first rule, wherein the first resource is used by the terminal to initiate a random access procedure.

[0036] In the above embodiments, when the terminal communicates in a system supporting multiple features or feature combinations, a unique resource can be determined for the terminal to initiate a random access, the terminal can effectively improve resource utilization and spectral efficiency while achieving uplink coverage enhancement, system expansion can be achieved, more users can be supported for uplink transmission, system communication efficiency and system capacity can be improved, and channel transmission performance can be ensured.

[0037] In some embodiments of the first aspect, the method further comprises:

[0038] determining priority information of the at least one feature and / or feature combination based on the first information sent by the network device or based on a protocol agreement.

[0039] In some embodiments of the first aspect, the priority information satisfies at least one of the following:

[0040] The priority information of the features or feature combinations at different CE levels is independently configured;

[0041] The priority information of the features or feature combinations at different CE levels is the same.

[0042] In some embodiments of the first aspect, the method further comprises:

[0043] determining a candidate resource set from the at least one NPRACH resource set corresponding to the CE level for each feature or feature combination based on the CE level, the capability of the terminal, the features or feature combinations, and corresponding NPRACH resource set configuration parameters;

[0044] in response to the candidate resource set including NPRACH resource sets corresponding to multiple features or feature combinations, determining a target resource set from the candidate resource set based on the priority information, wherein the target resource set includes the first resource;

[0045] in response to the candidate resource set including one NPRACH resource set, determining the candidate resource set as the target resource set, wherein the target resource set includes the first resource.

[0046] In some embodiments of the first aspect, determining the first resource based on the capability of the terminal and the first rule comprises:

[0047] determining a first probability parameter, and determining, based on the first probability parameter, a first carrier in at least one carrier corresponding to the CE level for each feature or feature combination, each of the carriers being configured with an independent set of NPRACH resources; and / or,

[0048] determining, based on the first probability parameter, a first carrier in at least one carrier corresponding to the CE level for a normal random access, each of the carriers being configured with a normal set of NPRACH resources;

[0049] determining, based on the capability of the terminal, a candidate resource set from the set of NPRACH resources on the at least one first carrier corresponding to the CE level;

[0050] determining, based on the priority information, a target resource set from the candidate resource set, the target resource set including the first resource, wherein the candidate resource set includes a set of NPRACH resources corresponding to each of a plurality of features or feature combinations;

[0051] The target resource set is a set of resources corresponding to a feature or feature combination with the highest priority among at least one feature and / or feature combination supported by the terminal.

[0052] In some embodiments of the first aspect, determining the first resource based on the capability of the terminal and the first rule comprises:

[0053] determining a first probability parameter, and determining, based on the first probability parameter, a first carrier in at least one carrier corresponding to the CE level for each feature or feature combination, each of the carriers being configured with an independent set of NPRACH resources; and / or,

[0054] determining, based on the first probability parameter, a first carrier in at least one carrier corresponding to the CE level for a normal random access, each of the carriers being configured with a normal set of NPRACH resources;

[0055] determining, based on the capability of the terminal, a candidate resource set from the set of NPRACH resources on the at least one first carrier corresponding to the CE level;

[0056] determining, based on the priority information, a target resource set from the candidate resource set, the target resource set including the first resource, wherein the candidate resource set includes a set of NPRACH resources corresponding to each of a plurality of features or feature combinations;

[0057] The candidate resource set corresponds to a characteristic or a combination of characteristics supported by the terminal, and the target resource set is a NPRACH resource set on a target carrier corresponding to the characteristic or the combination of characteristics supported by the terminal.

[0058] In some embodiments of the first aspect, the method further comprises:

[0059] In response to the candidate resource set including one NPRACH resource set, the candidate resource set is determined as the target resource set, and the target resource set includes the first resource.

[0060] In some embodiments of the first aspect, the first resource is determined based on the capability of the terminal and a first rule, including:

[0061] A first carrier is determined from at least one carrier corresponding to the CE level based on the capability of the terminal and the priority information.

[0062] A first probability parameter is determined, and a target carrier is determined from the at least one first carrier based on the first probability parameter.

[0063] A target resource set configured on the target carrier is determined as the target resource set, and the target resource set includes the first resource.

[0064] The first carrier is a carrier corresponding to a characteristic or a combination of characteristics supported by the terminal and having the highest priority.

[0065] In some embodiments of the first aspect, the first resource is determined based on the capability of the terminal and a first rule, including:

[0066] A first carrier is determined from at least one carrier corresponding to the CE level, and a normal NPRACH resource is configured on each of the first carriers.

[0067] In response to the first carrier being multiple, a first probability parameter is determined, and a target carrier is determined from the first carriers based on the first probability parameter.

[0068] A candidate resource set is determined from the NPRACH resource set configured on the target carrier based on the capability of the terminal, and the candidate resource set includes: a NPRACH resource set corresponding to a characteristic or a combination of characteristics supported by the terminal, and / or a NPRACH resource set corresponding to a normal random access.

[0069] In response to the candidate resource set including multiple NPRACH resource sets and the candidate resource set not including an NPRACH resource set corresponding to normal random access, determining a target resource set from the candidate resource set based on the priority information, the target resource set including the first resource.

[0070] In response to the candidate resource set including one NPRACH resource set, determining the candidate resource set as the target resource set, the target resource set including the first resource.

[0071] In some embodiments of the first aspect, determining the first resource based on the capability of the terminal and the first rule includes:

[0072] determining, based on the capability of the terminal, a first carrier from at least one carrier corresponding to each feature or feature combination at the CE level, wherein each of the first carriers is configured with normal NPRACH resources and / or NPRACH resources corresponding to the feature or feature combination supported by the terminal;

[0073] determining a first probability parameter, and determining a target carrier from the first carriers based on the first probability parameter;

[0074] In response to the target carrier being configured with multiple NPRACH resource sets corresponding to multiple features or feature combinations, determining a target resource set from the multiple NPRACH resource sets configured on the target carrier based on the priority information, the target resource set including the first resource.

[0075] In some embodiments of the first aspect, the first probability parameter corresponding to each of the features or feature combinations is the same or different.

[0076] In some embodiments of the first aspect, the first probability parameter corresponding to each of the features or feature combinations is the same.

[0077] In some embodiments of the first aspect, the method further includes:

[0078] adjusting the first probability parameter based on the capability of the terminal; or

[0079] adjusting the first probability parameter based on the priority information.

[0080] In some embodiments of the first aspect, the terminal supports multi-tone NPUSCH transmission.

[0081] In response to the target resource set containing an NPRACH resource subset corresponding to the capability information, the terminal initiates a random access procedure based on the NPRACH resource subset; or

[0082] In response to the target resource set not containing the NPRACH resource subset corresponding to the capability information, the terminal initiates a random access procedure based on a resource in the target resource set.

[0083] The capability information is transmitted by the terminal, and the capability information is used to indicate that the terminal supports multi-tone NPUSCH transmission.

[0084] In combination with some embodiments of the first aspect, in some embodiments, the method further includes:

[0085] The terminal does not support any of the features or the combination of features, and initiates the random access procedure based on a normal NPRACH resource.

[0086] In combination with some embodiments of the first aspect, in some embodiments, the features include at least one of early data transmission (EDT) and orthogonal cover code (OCC).

[0087] The combination of features includes a combination of EDT and OCC.

[0088] The second aspect discloses a random access method, which includes:

[0089] A first parameter is transmitted to a terminal, and the first parameter is used to indicate a number of coverage enhancement (CE) levels of a current serving cell.

[0090] Second information is transmitted to the terminal, and the second information is used to configure a resource set of a narrowband physical random access channel (NPRACH) corresponding to each CE level.

[0091] The NPRACH resource set includes a first resource, and the first resource is determined by the terminal based on capability and a first rule, and the first resource is used by the terminal to initiate a random access procedure.

[0092] In the above embodiments, when the terminal communicates in a system supporting multiple features or combinations of features, the terminal can determine a unique resource to initiate a random access, the terminal can effectively improve resource utilization and spectral efficiency while achieving uplink coverage enhancement, can achieve system expansion, can support more users for uplink transmission, and can improve system communication efficiency and system capacity while ensuring channel transmission performance.

[0093] In some embodiments of the second aspect, in some embodiments, the resource set of the NPRACH corresponding to each of the CE levels comprises: a resource set of the NPRACH corresponding to at least one characteristic or combination of characteristics, and / or a common resource set of the NPRACH.

[0094] In some embodiments of the second aspect, in some embodiments, the method further comprises:

[0095] sending first information to the terminal, the first information being used to determine priority information of the at least one characteristic and / or combination of characteristics.

[0096] In some embodiments of the second aspect, in some embodiments, the method further comprises:

[0097] sending a first probability parameter to the terminal, the first probability parameter being used by the terminal to determine one carrier from at least one carrier corresponding to a current CE level.

[0098] In some embodiments of the second aspect, in some embodiments, the first probability parameter corresponding to each characteristic or combination of characteristics is the same or different.

[0099] In a third aspect, the embodiments of the present disclosure provide a random access method, the method comprising:

[0100] sending, by a network device, a first parameter to a terminal, the first parameter being used to indicate a number of coverage enhancement (CE) levels of a current serving cell;

[0101] determining, by the terminal, a current CE level;

[0102] sending, by the network device, second information to the terminal, the second information being used to configure a resource set of a narrowband physical random access channel (NPRACH) corresponding to each of the CE levels;

[0103] determining, by the terminal, a resource set of the NPRACH corresponding to each characteristic or combination of characteristics in the CE level, the number of the characteristic or combination of characteristics being one or more;

[0104] determining, by the terminal, a first resource from at least one resource of the NPRACH corresponding to the CE level based on a capability of the terminal and a first rule, the first resource being used by the terminal to initiate a random access procedure.

[0105] In the above embodiments, the terminal can determine a unique resource to initiate random access when communicating in a system supporting multiple features or feature combinations, the terminal can effectively improve resource utilization and spectral efficiency while achieving uplink coverage enhancement, system expansion can be achieved, more users can be supported for uplink transmission, system communication efficiency and system capacity can be improved, and channel transmission performance is guaranteed.

[0106] In a fourth aspect, the embodiments of the present disclosure provide a terminal, the terminal comprising a transceiver module and a processing module; wherein the terminal is configured to perform the first aspect and the optional implementation manners of the first aspect.

[0107] In a fifth aspect, the embodiments of the present disclosure provide a network device, the network device comprising a transceiver module and a processing module; wherein the network device is configured to perform the second aspect and the optional implementation manners of the second aspect.

[0108] In a sixth aspect, the embodiments of the present disclosure provide a terminal, the terminal comprising one or more processors; wherein the terminal is configured to perform the first aspect and the optional implementation manners of the first aspect.

[0109] In a seventh aspect, the embodiments of the present disclosure provide a network device, the network device comprising one or more processors; wherein the network device is configured to perform the second aspect and the optional implementation manners of the second aspect.

[0110] In an eighth aspect, the embodiments of the present disclosure provide a communication system, the communication system comprising a terminal and a network device; wherein the terminal is configured to perform the method described in the first aspect and the optional implementation manners of the first aspect, and the network device is configured to perform the method described in the second aspect and the optional implementation manners of the second aspect.

[0111] In a ninth aspect, the embodiments of the present disclosure provide a storage medium, the storage medium storing instructions, when the instructions are executed on a communication device, causing the communication device to perform the method described in the first aspect and the optional implementation manners of the first aspect, the second aspect and the optional implementation manners of the second aspect.

[0112] In a tenth aspect, the embodiments of the present disclosure provide a program product, when the program product is executed by a communication device, causing the communication device to perform the method described in the first aspect and the optional implementation manners of the first aspect, the second aspect and the optional implementation manners of the second aspect.

[0113] In an eleventh aspect, the embodiments of the present disclosure provide a computer program, when the computer program is executed on a computer, causing the computer to perform the method described in the first aspect and the optional implementation manners of the first aspect, the second aspect and the optional implementation manners of the second aspect.

[0114] In a twelfth aspect, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes processing circuitry configured to perform the methods described according to the first aspect and its optional implementations, the second aspect, and its optional implementations.

[0115] It is understood that the aforementioned terminals, network devices, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0116] This disclosure provides a random access method and apparatus. In some embodiments, the terms "random access method" and "information processing method," "communication method," etc., can be used interchangeably; the terms "random access apparatus" and "information processing apparatus," "communication apparatus," etc., can be used interchangeably; and the terms "information processing system," "communication system," etc., can be used interchangeably.

[0117] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0118] In each of the disclosed embodiments, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0119] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0120] In this disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the aforementioned," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular or a plural expression.

[0121] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0122] In some embodiments, the terms “at least one of”, “one or more of”, “a plurality of”, “multiple”, and the like can be replaced with each other.

[0123] In some embodiments, the description of “at least one of A, B”, “A and / or B”, “in one case A, in another case B”, “in response to a case A, in response to a case B”, and the like can include the following technical solutions according to the case: in some embodiments A (A is executed regardless of B); in some embodiments B (B is executed regardless of A); in some embodiments, A and B are selectively executed (A and B are selected from A and B); in some embodiments, A and B (A and B are executed). When there are more branches such as A, B, C, and the like, it is similar to the above.

[0124] In some embodiments, the description of “A or B” and the like can include the following technical solutions according to the case: in some embodiments A (A is executed regardless of B); in some embodiments B (B is executed regardless of A); in some embodiments, A and B are selectively executed (A and B are selected from A and B). When there are more branches such as A, B, C, and the like, it is similar to the above.

[0125] The prefix words "first", "second", etc. in the embodiments of the present disclosure are merely used to distinguish different description objects, and do not constitute limitation on the position, sequence, priority, quantity or content of the description objects. The description of the description objects should refer to the description in the context of the claims or embodiments, and should not constitute redundant limitation because of the use of the prefix words. For example, the description objects are "fields", and the ordinal words before "fields" in "first field" and "second field" do not limit the position or sequence between "fields". "First" and "second" do not limit whether the "fields" modified thereby are in the same message, nor do they limit the sequence of "first field" and "second field". For another example, the description objects are "levels", and the ordinal words before "levels" in "first level" and "second level" do not limit the priority between "levels". For another example, the quantity of the description objects is not limited by the ordinal words, and can be one or more. For example, "first device", wherein the quantity of "devices" can be one or more. In addition, the objects modified by different prefix words can be the same or different. For example, the description objects are "devices", and "first device" and "second device" can be the same device or different devices, and their types can be the same or different. For another example, the description objects are "information", and "first information" and "second information" can be the same information or different information, and their contents can be the same or different.

[0126] In some embodiments, "including A", "containing A", "for indicating A", "carrying A" can be interpreted as directly carrying A, or indirectly indicating A.

[0127] In some embodiments, the terms "time / frequency", "time / frequency domain" and the like refer to the time domain and / or the frequency domain.

[0128] In some embodiments, the terms "in response to", "in response to determining", "in the case of", "when", "when", "if", "if" and the like can be replaced with each other.

[0129] In some embodiments, the terms "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not lower than", "above" and the like can be replaced with each other, and the terms "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", "below" and the like can be replaced with each other.

[0130] In some embodiments, the apparatuses and devices can be interpreted as physical, as well as virtual, whose names are not limited to the names described in the embodiments, and in some cases can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0131] In some embodiments, "network" can be interpreted as an apparatus contained in the network, such as an access network device, a core network device, etc.

[0132] In some embodiments, "access network device (AN device)" can also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments can also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0133] In some embodiments, a "terminal" or "terminal device" can be referred to as a "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

[0134] In some embodiments, an access network device, a core network device, or a network device can be replaced with a terminal. For example, the embodiments of the present disclosure can also be applied to a structure in which communication between an access network device, a core network device, or a network device and a terminal is replaced with communication between a plurality of terminals (e.g., device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, the terminal can also be configured to have all or part of the functions of the access network device. In addition, the terms "uplink", "downlink", etc. can also be replaced with terms corresponding to the inter-terminal communication (e.g., "side"). For example, an uplink channel, a downlink channel, etc. can be replaced with a side channel, and an uplink, a downlink, etc. can be replaced with a side link.

[0135] In some embodiments, a terminal can be replaced with an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device can also be configured to have all or part of the functions of the terminal.

[0136] In some embodiments, the data, information, etc. can be obtained in compliance with the laws and regulations of the country in which the location is situated.

[0137] In some embodiments, the data, information, etc. can be obtained after obtaining the consent of the user.

[0138] In addition, each element, each row, or each column in the table of the embodiments of the present disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0139] FIG. 1A is a schematic diagram of an architecture of a communication system according to an embodiment of the present disclosure.

[0140] As shown in FIG. 1A, the communication system 100 includes a terminal 101 and a network device 102.

[0141] In some embodiments, the terminal 101 includes at least one of a mobile phone, a wearable device, an Internet of Things (IoT) device, a Narrow Band-Internet of Things (NB-IoT) device, a communication-capable automobile, a smart automobile, a Pad, an Ambient Internet of Things (A-IoT) device, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, a wireless terminal device in a smart home, a RedCap terminal, and the like, but is not limited thereto.

[0142] In some embodiments, the network device 102 is, for example, a node or device that accesses a terminal to a wireless network, and the access network device can include at least one of a satellite or a drone in a non-terrestrial communication network, an evolved node B (eNB) in a 5G communication system, a next generation eNB (ng-eNB), a next generation node B (gNB), a next generation RAN node (NG-RAN node), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, an access node in a Wi-Fi system, but is not limited thereto.

[0143] In some embodiments, the technical solutions of the present disclosure can be applied to an Open RAN architecture, at this time, the interfaces between or within the network devices involved in the embodiments of the present disclosure can become internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be realized through software or programs.

[0144] In some embodiments, the network device can be composed of a central unit (CU) and a distributed unit (DU), wherein the CU can also be referred to as a control unit (control unit). The CU-DU structure can split the protocol layers of the network device, and part of the protocol layer functions are controlled by the CU, and the remaining part or all of the protocol layer functions are distributed in the DU and controlled by the CU, but the present disclosure is not limited thereto.

[0145] It can be understood that the communication system described in the embodiments of the present disclosure is for more clearly illustrating the technical solutions of the embodiments of the present disclosure, and does not constitute a limitation on the technical solutions proposed in the embodiments of the present disclosure. It can be known by those skilled in the art that, with the evolution of system architecture and the appearance of new business scenarios, the technical solutions proposed in the embodiments of the present disclosure are also applicable to similar technical problems.

[0146] The following embodiments of the present disclosure can be applied to the communication system 100 shown in FIG. 1A or part of the subjects, but are not limited thereto. The subjects shown in FIG. 1A are illustrative, and the communication system can include all or part of the subjects in FIG. 1A, or other subjects other than those in FIG. 1A. The number and form of each subject is arbitrary, each subject can be physical or virtual, the connection relationship between each subject is illustrative, each subject can not be connected or can be connected, the connection can be in any way, can be direct connection or indirect connection, can be wired connection or wireless connection.

[0147] Embodiments of the present disclosure can be applied to a Non-terrestrial Network (NTN), an IoT-NTN, Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, a 4th generation mobile communication system (4G), a 5th generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (Bluetooth (registered trademark)), a Public Land Mobile Network (PLMN) network, a Device-to-Device (D2D) system, a Machine to Machine (M2M) system, an Internet of Things (IoT) system, a Narrow Band-IoT (NB-IoT) system, a Vehicle-to-Everything (V2X), a system using other communication methods, a next-generation system expanded based on them, or the like. Further, a plurality of systems can be combined (for example, a combination of LTE or LTE-A and 5G, or the like).

[0148] In some embodiments, a non-terrestrial (also referred to as non-terrestrial) network (NTN) is an important technology introduced by the 5th generation mobile communication system (5G) to provide wireless resources through satellites (or unmanned aircraft systems (UAS) platforms) rather than ground base stations, as shown in FIG. 1A.

[0149] In IoT-NTN, uplink capacity enhancement is considered to be performed in order to be able to serve more users at the same time for the following reasons:

[0150] 1. The frequency band resources for NTN are limited;

[0151] 2. The cell radius covered by the satellite is larger, and the number of users in a cell is more than that in a terrestrial network;

[0152] 3. The transmission distance between the terminal and the satellite is relatively long. In order to improve the cell coverage and transmission performance under the premise of limited terminal transmission power, the NTN network often needs to perform more blind retransmissions, which will greatly waste spectrum resources and reduce spectrum efficiency.

[0153] Therefore, the following technologies can be considered to achieve uplink capacity enhancement:

[0154] Orthogonal Cover Code (OCC);

[0155] Early Data Transmission (EDT) without Message 1 (Msg1) / Message 2 (Msg2) (EDT without Msg1 / Msg2).

[0156] In addition, the channels that can be involved in the communication process of the above system include: Physical Uplink Shared Channel (PUSCH), Narrow-band Physical Uplink Shared Channel (NPUSCH), Narrow-band Physical Random Access Channel (NPRACH), etc.

[0157] In some embodiments, a terminal in an IoT-NTN can support multiple features or possible feature combinations. One issue to be considered is that if the terminal supports multiple features and the network device configures NPRACH resources corresponding to each feature, which set of resources should the terminal perform NPRACH transmission based on.

[0158] The random access method and apparatus provided by the present disclosure will be described in detail below with reference to the accompanying drawings.

[0159] FIG. 2A is an interaction diagram of a random access method according to an embodiment of the present disclosure. As shown in FIG. 2A, the present embodiment relates to a random access method, and the method comprises:

[0160] In step S2101, the terminal 101 determines the current coverage enhancement (CE) level.

[0161] In some embodiments, the terminal 101 can determine the current coverage enhancement (CE) level in which it is located.

[0162] In some embodiments, the terminal 101 can determine the number of CE levels configured by the current serving cell based on the first parameter configured by the network device 102.

[0163] In some embodiments, the network device 102 sends the first parameter to the terminal 101.

[0164] In some embodiments, the first parameter is used to indicate the number of CE levels of the current serving cell.

[0165] In some embodiments, the terminal 101 can determine the current CE level based on the measurement result of the signal.

[0166] In some embodiments, the terminal 101 can determine the current CE level based on the comparison between the measurement result of the signal and the preset threshold.

[0167] In some embodiments, the measurement result of the signal can be the Reference Signal Receiving Power (RSRP).

[0168] In some embodiments, the terminal 101 can compare the measured RSRP with the preset threshold to determine the current CE level.

[0169] In some embodiments, the terminal 101 can determine the current CE level based on a comparison between the RSRP measurement value of the anchor carrier and a preset threshold.

[0170] Optionally, the preset threshold can be predefined by a protocol or configured by the network device 102.

[0171] Optionally, the network device 102 can send a second parameter, which is used to configure the preset threshold.

[0172] Optionally, the number of preset thresholds can be one or more.

[0173] Optionally, the number of preset thresholds can match the number of CE levels of the current serving cell.

[0174] Optionally, as a possible implementation, the number of preset thresholds = the number of CE levels of the serving cell - 1.

[0175] In step S2102, the terminal 101 acquires at least one NPRACH resource set corresponding to the CE level.

[0176] In some embodiments, after determining the current CE level, the terminal 101 can further determine at least one NPRACH resource set corresponding to the CE level.

[0177] In some embodiments, the terminal 101 determines the NPRACH resource set corresponding to the current CE level configured by the network device 102 based on the configuration of the network device 102.

[0178] In some embodiments, the NPRACH resource set corresponding to the current CE level refers to the NPRACH resource set corresponding to each characteristic or characteristic combination under the current CE level.

[0179] In some embodiments, the terminal 101 can determine the NPRACH resource set corresponding to each characteristic or characteristic combination under the current CE level.

[0180] In some embodiments, the network device 102 can configure the NPRACH resource set corresponding to each characteristic or characteristic combination. The NPRACH resource set corresponding to each characteristic or characteristic combination is used for NPRACH transmission with the corresponding characteristic or characteristic combination.

[0181] In some embodiments, the network device 102 sends second information to the terminal 101, which is used to configure the NPRACH resource set corresponding to each CE level.

[0182] Optionally, the NPRACH resource set corresponding to each CE level comprises at least one of the following: a NPRACH resource set corresponding to at least one feature or feature combination; a NPRACH resource set corresponding to a normal random access (normal NPRACH resource set).

[0183] Optionally, the NPRACH resource set configured by the network device 102 comprises a first resource determined by the terminal based on the capability and the first rule.

[0184] Optionally, the first resource is a NPRACH resource used by the terminal 101 to initiate a random access procedure.

[0185] In some embodiments, the network device 102 can configure a NPRACH resource set corresponding to each feature or feature combination at each CE level of the current serving cell. That is, as an example, the network device 102 can configure a NPRACH resource set corresponding to each feature or feature combination at CE level 1, and a NPRACH resource set corresponding to each feature or feature combination at CE level 2, and so on, wherein the CE level 1 and the CE level 2 are the CE levels supported by the serving cell configured by the network device.

[0186] In some embodiments, the network device 102 can also configure a NPRACH resource set corresponding to at least one feature or feature combination at CE level 1, and a NPRACH resource set corresponding to at least one feature or feature combination at CE level 2, and so on, wherein the CE level 1 and the CE level 2 are the CE levels supported by the serving cell configured by the network device.

[0187] In some embodiments, for one feature or feature combination, it is not necessarily configured with a corresponding NPRACH resource at each CE level.

[0188] In some embodiments, the number of the features or feature combinations is one or more.

[0189] In some embodiments, the NPRACH resource set corresponding to each feature or feature combination can be independently configured.

[0190] In some embodiments, the features or feature combinations configured at different CE levels can also be independent. As an example, the NPRACH resources corresponding to feature A and feature combination C can be configured at CE level 1, the NPRACH resources corresponding to feature A and feature B can be configured at CE level 2, and the NPRACH resources corresponding to different features can also be independently configured.

[0191] In some embodiments, the above-mentioned features can include, but are not limited to, at least one of the following: early data transmission (EDT) and orthogonal cover code (OCC).

[0192] In some embodiments, the above-mentioned feature combination can include, but is not limited to, a combination of EDT and OCC.

[0193] In some embodiments, other features, etc. can also be included, which are not limited herein.

[0194] In some embodiments, the name of the above-mentioned second information is not limited, which is, for example, "configuration information", "resource configuration", "NPRACH resource configuration", "random access configuration", "random access resource configuration", etc.

[0195] In some embodiments, the network device 102 can detect on the configured NPRACH resource.

[0196] In some embodiments, the network device 102 can detect on all configured NPRACH resources.

[0197] In some embodiments, the network device 102 can detect on each configured NPRACH resource.

[0198] In some embodiments, the network device 102 can detect NPRACH on a first resource. The first resource is the resource used by the terminal 101 to initiate the random access procedure, i.e. the terminal 101 transmits NPRACH on the first resource.

[0199] Further, the network device 102 can obtain the capability of the terminal 101 (e.g. performing transmission based on which feature corresponding NPRACH resource) based on the first resource on which the NPRACH is detected, so as to be able to obtain the terminal capability indication information, and further perform corresponding scheduling, resource allocation, etc.

[0200] In some embodiments, the above-mentioned NPRACH resource set corresponding to the current CE level also includes a legacy NPRACH resource set corresponding to the current CE level. The legacy NPRACH resource set can be understood as a resource set that is independent of the feature or feature combination, and the terminal that does not support the above-mentioned feature or feature combination uses the legacy NPRACH resource set to initiate random access.

[0201] Step S2103, the terminal 101 obtains the priority information of the feature and / or feature combination.

[0202] In some embodiments, the terminal 101 can determine the priority information of the above-mentioned at least one feature and / or feature combination based on the first information sent by the network device.

[0203] In some embodiments, the first information is used to indicate the priority information of the at least one characteristic and / or characteristic combination.

[0204] In some embodiments, the first information can be included in a system information block 2 (SIB2), or the first information can be included in a narrowband SIB2 (SIB2-NB).

[0205] In some embodiments, the first information can be carried by at least one of the following: a narrowband random access common configuration (RACH-configCommon-NB); a narrowband uplink common configuration (UL-ConfigCommon-NB); a narrowband physical random access channel configuration system information (NPRACH-ConfigSIB); a characteristic parameter set; an OCC parameter set; an EDT parameter set.

[0206] In some embodiments, the first information is not limited in name, for example, it is “indication information”, “priority indication”, “configuration information”, “priority configuration”, “characteristic parameter”, “priority parameter”, “characteristic priority”, “characteristic combination priority”, and the like.

[0207] In some embodiments, the terminal 101 can determine the priority information of the at least one characteristic and / or characteristic combination based on the agreement of the protocol.

[0208] In some embodiments, the priority information of each characteristic or characteristic combination between different CE levels is independently configured.

[0209] In some embodiments, the priority information of each characteristic or characteristic combination between different CE levels is the same.

[0210] In some embodiments, for the same characteristic or characteristic combination, it can have different priorities at different CE levels.

[0211] As an example, the characteristics configured by the network device 102 for CE level 1 and CE level 2 both include characteristic A and characteristic B, and the characteristic combinations both include characteristic combination C (for example, C can be the combination of A and B). The terminal 101 can determine the priority at the current CE level (CE level 1) as: characteristic combination C > characteristic A > characteristic B. The terminal 101 can determine the priority at CE level 2 as: characteristic A > characteristic B > characteristic combination C. It can be understood that the number of characteristics is not limited, and the number of characteristic combinations is also not limited.

[0212] In some embodiments, the network device 102 can also indicate the priority of a proper subset of the above-mentioned features and / or feature combinations. As an example, the network device 102 only indicates the priority of one or two features or feature combinations.

[0213] As an example, still taking the case that the features configured by the network device 102 for the current CE level include feature A and feature B, and the feature combination includes feature combination C (for example, C can be the combination of A and B), a possible implementation is as follows: for example, assuming that the above-mentioned features and / or feature combinations have three priorities 1>2>3, the network device 102 only indicates that the transmission priority of feature A is 2, in this way, by default, feature A+feature B has the highest priority.

[0214] Further, if the terminal 101 needs to perform feature B and feature A, there is no resource corresponding to feature combination C under the current CE level, but there are NPRACH resources of feature B only and feature A only, then the terminal performs NPRACH transmission based on the NPRACH resource corresponding to feature A. Or there is a resource corresponding to feature combination C, then the terminal performs NPRACH based on feature A and feature B based on the NPRACH resource corresponding to feature combination C.

[0215] Step S2104, the terminal 101 determines the first resource.

[0216] In some embodiments, the terminal 101 can determine the first resource from the NPRACH resource set corresponding to the current CE level.

[0217] In some embodiments, the above-mentioned first resource is used for the terminal 101 to initiate a random access procedure.

[0218] In some embodiments, the above-mentioned first resource is used for the terminal 101 to perform NPRACH transmission.

[0219] In some embodiments, the terminal 101 can determine the above-mentioned first resource based on its own capability and the first rule.

[0220] In some embodiments, the capability of the terminal refers to the features or feature combinations supported by the terminal.

[0221] In some embodiments, the terminal 101 can determine a candidate resource set in at least one NPRACH resource set corresponding to the current CE level based on the above-mentioned CE level, the capability of the terminal, the above-mentioned features or feature combinations, and the corresponding NPRACH resource set configuration parameters, the general NPRACH resource set configuration parameters.

[0222] The legacy NPRACH resource set (or referred to as a traditional NPRACH resource set, or referred to as a normal resource set, or referred to as a traditional resource set, or referred to as a normal random access corresponding NPRACH resource set, etc.) refers to a NPRACH resource corresponding to a normal random access initiated by a terminal, that is, a resource corresponding to a random access initiated by the terminal based on no feature or feature combination; or the terminal is a normal terminal and does not support any feature or feature combination, and the resource is a resource corresponding to a random access initiated by the normal terminal.

[0223] As an example, for example, the terminal 101 first determines that the current CE level is CE level 1, and determines that the NPRACH resource set configured on the CE level 1 includes: a NPRACH resource set corresponding to feature A, a NPRACH resource set corresponding to feature B, and a NPRACH resource set corresponding to feature combination C. The terminal 101 can determine that the NPRACH transmission corresponding to feature A can be currently executed or supported according to the capability of the terminal (which features or feature combinations are supported, and whether the condition for performing transmission based on the feature or feature combination is currently met), and then the terminal 101 only selects the NPRACH resource set corresponding to feature A as the candidate resource set.

[0224] Optionally, the candidate resource set includes a plurality of NPRACH resource sets corresponding to features or feature combinations, and the terminal 101 can determine a target resource set from the candidate resource set based on priority information, and the target resource set includes the first resource. The target resource set is a resource set corresponding to a feature or feature combination with the highest priority in at least one feature and / or feature combination supported by the terminal 101.

[0225] Optionally, the candidate resource set includes one NPRACH resource set, and the terminal 101 can take the candidate resource set as the target resource set, and the target resource set includes the first resource. The one NPRACH resource set included in the candidate resource set is a NPRACH resource set corresponding to one feature or feature combination. Alternatively, the one NPRACH resource set included in the candidate resource set is a normal NPRACH resource set.

[0226] In some embodiments, the terminal 101 can determine a first probability parameter. Based on the first probability parameter, the terminal 101 can determine a first carrier for each feature or feature combination in the at least one carrier corresponding to the current CE level, each carrier being configured with a set of independent NPRACH resources; and / or determine a first carrier for normal random access in the at least one carrier corresponding to the current CE level, each carrier being configured with a set of normal NPRACH resources.

[0227] Further, the terminal 101 can determine a candidate resource set from the set of NPRACH resources on the at least one first carrier corresponding to the current CE level based on its capability (which features or feature combinations are supported, and / or whether the conditions for performing transmission based on the features or feature combinations are met at present). The candidate resource set is the set of NPRACH resources on the first carrier corresponding to the features or feature combinations supported by the terminal 101.

[0228] Optionally, the network device 102 can configure the terminal 101 with multiple carriers under the current CE level, at least one of which can be configured with a set of NPRACH resources corresponding to at least one feature or feature combination.

[0229] Optionally, the features or feature combinations configured on different carriers can be independent (i.e., different carriers can support different features or feature combinations) or the same (i.e., different carriers support the same features or feature combinations). Where a carrier supports a feature or feature combination, it means that the carrier is configured with a set of NPRACH resources corresponding to the feature or feature combination.

[0230] It can be understood that different carriers can support different features or feature combinations means that carrier #1 can be configured with a set of NPRACH resources corresponding to feature A, and carrier #2 can be configured with a set of NPRACH resources corresponding to feature combination C. Different carriers supporting the same features or feature combinations means that carrier #1 and carrier #2 can both be configured with a set of NPRACH resources corresponding to feature A. However, the set of NPRACH resources corresponding to feature A on carrier #1 is independent of the set of NPRACH resources corresponding to feature A on carrier #2, that is, the NPRACH resources of feature A on carrier #1 and carrier #2 can be different (because the frequency domain positions of carrier #1 and carrier #2 are different, it cannot be guaranteed that the NPRACH resources on the two carriers are the same).

[0231] Optionally, the candidate resource set includes a plurality of NPRACH resource sets corresponding to a plurality of features or feature combinations, and the terminal 101 can determine a target resource set from the candidate resource set based on the priority information, the target resource set including the first resource. The target resource set corresponds to a feature or feature combination with the highest priority among the features or feature combinations supported by the terminal 101.

[0232] Optionally, the candidate resource set includes one NPRACH resource set, and the terminal 101 can take the candidate resource set as the target resource set, the target resource set including the first resource. The one NPRACH resource set included in the candidate resource set is an NPRACH resource set corresponding to one feature or feature combination. Alternatively, the one NPRACH resource set included in the candidate resource set is a common NPRACH resource set.

[0233] Optionally, the first probability parameter is configured by the network device 102.

[0234] Optionally, the network device 102 sends the first probability parameter.

[0235] Optionally, the terminal 101 receives the first probability parameter sent by the network device 102.

[0236] Optionally, the first probability parameter corresponding to each feature or feature combination is the same or different.

[0237] Optionally, the first carrier selected for each feature or feature combination can be the same or different.

[0238] Optionally, the first carrier selected for each feature or feature combination can be different, and the priority information of the corresponding feature or feature combination on each carrier is the same.

[0239] As an example, carrier#1 is configured with resources for feature A and feature B, and carrier#2 is configured with resources for feature A. The terminal 101 can select carrier#1 as the first carrier for feature A and select carrier#1 as the first carrier for feature B. Alternatively, the terminal 101 can select carrier#2 as the first carrier for feature A and select carrier#1 as the first carrier for feature B, where the priority information of each feature or feature combination on carrier#1 and carrier#2 is the same.

[0240] As an example, the characteristics configured by the network device 102 for the current CE level include: characteristic A, characteristic B, and the characteristic combination includes: characteristic combination C (for example, C can be the combination of A and B). For example, the terminal 101 supports characteristic A and characteristic B, and the current condition for performing random access based on characteristic A and characteristic B is met, and there are a set of NPRACH resources corresponding to characteristic A and a set of NPRACH resources corresponding to characteristic B on the current CE level, then the set of NPRACH resources corresponding to characteristic A and the set of NPRACH resources corresponding to characteristic B are taken as the candidate resource set. Further according to the priority information, determine a unique resource set (the resource set corresponding to the characteristic or characteristic combination with the highest priority) in the candidate resource set as the final selected NPRACH resource set, and select one NPRACH from the resource set to initiate random access.

[0241] As an example, for example, the terminal 101 determines that the selected at least one first carrier includes NPRACH resources corresponding to characteristic B and legacy NPRACH resources. If the terminal 101 does not support characteristic B, or the terminal 101 supports characteristic B but does not currently meet the execution condition corresponding to characteristic B, the terminal 101 can select the legacy resource set included in the at least one first carrier as the candidate resource set (the candidate resource set only includes the legacy resource set); if the terminal 101 supports characteristic B and currently meets the execution condition corresponding to characteristic B, the terminal 101 can select the set of NPRACH resources corresponding to characteristic B included in the at least one first carrier as the candidate resource set (the candidate resource set only includes the set of resources corresponding to characteristic B, and does not include the legacy resource set).

[0242] Optionally, if the capability of the terminal 101 does not match all characteristics or characteristic combinations on the current CE level, the terminal 101 directly selects the Normal NPRACH resource set as the selected resource to initiate RACH.

[0243] As another example, the terminal 101 selects the first carrier corresponding to the characteristic A as carrier#1 for the characteristic A, selects the first carrier corresponding to the characteristic B as carrier#2 for the characteristic B, and selects the first carrier corresponding to the normal NPRACH for the normal random access as carrier#3. If the terminal 101 only supports the transmission based on the characteristic A, then further, the terminal 101 can select the NPRACH resource set corresponding to the characteristic A on the carrier#1 as the candidate resource set; if the terminal 101 supports the transmission based on the characteristics A and B, then further, the terminal 101 can select the NPRACH resource corresponding to the characteristic A on the carrier#1 and the NPRACH resource corresponding to the characteristic B on the carrier#2 as the candidate resource set; or, the terminal 101 does not support any characteristic or does not perform the NPRACH transmission based on any characteristic, but initiates the normal random access, then the terminal 101 can select the normal NPRACH resource set on the carrier#3 as the candidate resource set.

[0244] It should be noted that in this way, if different carriers have independent priority configurations (that is, for the same characteristic / characteristic combination, different carriers can have different priorities), a problem that can be caused is that the priorities corresponding to different characteristics or characteristic combinations in the candidate resource set are the same. Therefore, this way is more suitable for the scheme in which different carriers correspond to the same priority configuration. Or, if the priorities corresponding to different characteristics or characteristic combinations are the same, the resource set corresponding to one of the characteristics is determined as the selected resource for the NPRACH transmission based on the default rule of the protocol.

[0245] In some embodiments, the terminal 101 can determine a first probability parameter. The terminal 101 can determine, based on the first probability parameter, a first carrier in at least one carrier corresponding to each characteristic or characteristic combination at the current CE level, each carrier being configured with an independent NPRACH resource set; and / or, based on the first probability parameter, a first carrier in at least one carrier corresponding to the normal random access at the current CE level, each carrier being configured with a normal NPRACH resource set (legacy NPRACH resource set).

[0246] Further, the terminal 101 can determine a candidate resource set from the NPRACH resource set on the at least one first carrier corresponding to the current CE level based on its own capability (which characteristic or characteristic combination is supported and whether the condition for performing the transmission based on the characteristic or characteristic combination is met at present). The candidate resource set is the NPRACH resource set on the first carrier corresponding to the characteristic or characteristic combination supported by the terminal 101.

[0247] Optionally, the candidate resource set includes a plurality of NPRACH resource sets corresponding to the characteristics or the characteristic combinations, and the terminal 101 can determine a target resource set from the candidate resource set based on the priority information, the target resource set including the first resource. The target carrier on which the target resource set is located is the carrier corresponding to the characteristic or the characteristic combination with the largest number of the characteristics or the characteristic combinations in the at least one first carrier.

[0248] Optionally, the candidate resource set includes one NPRACH resource set, and the terminal 101 can take the candidate resource set as the target resource set, the target resource set including the first resource. The one NPRACH resource set included in the candidate resource set is an NPRACH resource set corresponding to one characteristic or one characteristic combination. Alternatively, the one NPRACH resource set included in the candidate resource set is a traditional NPRACH resource set.

[0249] Optionally, the first probability parameter is configured by the network device 102.

[0250] Optionally, the network device 102 sends the first probability parameter.

[0251] Optionally, the terminal 101 receives the first probability parameter sent by the network device 102.

[0252] Optionally, the first probability parameters corresponding to each characteristic or characteristic combination are the same or different.

[0253] As an example, the features configured by the network device 102 for the current CE level include: feature A, feature B, and the feature combination includes: feature combination C (for example, C can be the combination of A and B). For example, carrier #1 configures resources of feature A and feature B, and carrier #2 configures resources of feature A, and then carrier #1 and carrier #2 can be selected at the same time based on the probability. That is, carrier #1 is selected as the first carrier for feature B based on the feature B, and carrier #2 can be selected as the first carrier for feature A based on the feature A. Further, the terminal selects a candidate resource set from the NPRACH resource set on carrier #1 and carrier #2 according to its own capability (which features or feature combinations it supports and whether the current conditions for performing transmission based on the features or feature combinations are met). Among them, the terminal can select the NPRACH resource set on the carrier containing the most features or feature combinations that the terminal can perform from the above carriers as the candidate resource set. For example, among the above carrier #1 and carrier #2, if the terminal supports both feature A and feature B, the NPRACH resource set corresponding to feature A and feature B on carrier #1 is selected as the candidate resource set.

[0254] Alternatively, if the terminal only supports feature A, further, the terminal can select carrier #1 containing the most features or feature combinations as the candidate resource set, or select carrier #2 containing the least features or feature combinations as the candidate resource set; or carrier #1 and carrier #2 are both candidate resources, and the terminal further determines the selected target carrier according to the different priorities of the same features on the two carriers, if the priorities are the same, the target carrier and the target resource set are determined based on the ascending or descending carrier number, or the carrier containing the most or least features or feature combinations is selected as the candidate resource, or the target carrier is randomly determined according to the probability parameter again.

[0255] As an example, for example, the terminal 101 determines that the selected carrier (such as carrier #1 containing the most features or feature combinations) includes the NPRACH resource set corresponding to feature A, the NPRACH resource corresponding to feature B, and the general NPRACH resource. If the terminal 101 does not support feature A and feature B, or the terminal 101 supports the feature but does not currently meet the execution condition corresponding to the feature, the terminal 101 can select the general resource set included in the carrier #1 as the candidate resource set (only the general resource set is included in the candidate resource set).

[0256] As an example, the terminal 101 determines the NPRACH resource set corresponding to feature B and the legacy NPRACH resource set on a selected carrier (e.g., carrier #1 including the feature B with the largest number of features or feature combinations). If the terminal 101 supports the feature B and currently satisfies the execution condition corresponding to the feature B, the terminal 101 can select the NPRACH resource set corresponding to the feature B included in the carrier #1 as the candidate resource set (the candidate resource set only includes the resource set corresponding to the feature B, and does not include the legacy resource set).

[0257] As another example, the features configured by the network device 102 for the current CE level include: feature A, feature B, and feature C. For example, the terminal 101 selects the first carrier based on the first probability parameter for the feature A as carrier #1 (the carrier #1 includes the NPRACH resource corresponding to the features A and B, and the legacy NPRACH resource), selects the first carrier for the feature B as carrier #2 (the carrier #2 includes the NPRACH resource corresponding to the features A, B, and C), and selects the first carrier for the legacy random access as carrier #3 (the carrier #3 includes the NPRACH resource corresponding to the feature C and the legacy random access). If the terminal 101 only supports the transmission based on the feature A, the NPRACH resource corresponding to the feature A on the carrier #1 is selected as the candidate resource set; if the terminal 101 supports the transmission based on the feature A and the feature C, the NPRACH resource corresponding to the feature A and the NPRACH resource corresponding to the feature C on the carrier #2 are selected as the candidate resource set; and if the terminal 101 does not support any feature, the legacy NPRACH resource set on the carrier #3 is selected as the candidate resource set.

[0258] Optionally, when the candidate resource set selected by the terminal includes multiple NPRACH resource sets corresponding to features or feature combinations, one of the candidate resource sets (the resource set corresponding to the feature or feature combination with the highest priority) is determined as the final selected NPRACH resource set according to the priority information, and one of the NPRACH resources in the resource set is selected to initiate the random access.

[0259] In some embodiments, the terminal 101 can determine a first carrier from at least one carrier corresponding to the current CE level based on its own capability (which features or feature combinations are supported, and whether the conditions for performing transmission based on the features or feature combinations are currently met) and the priority information described above. The first carrier is the carrier corresponding to the feature or feature combination supported by the terminal 101 and having the highest priority. The first carrier determined by the terminal 101 can be one or more.

[0260] Further, for the case where the determined first carrier is multiple, the terminal 101 can determine a first probability parameter and determine a target carrier from the multiple first carriers based on the first probability parameter. For the case where the determined first carrier is one, the terminal 101 can directly determine the first carrier as the target carrier; or the terminal 101 can also determine the first carrier as the target carrier based on the first probability parameter. It is conceivable that in this case, the number of first carriers is one, and the corresponding first probability parameter is also 1.

[0261] Further, the terminal 101 can determine the NPARCH resource set configured on the target carrier as a target resource set, and the target resource set includes the first resource.

[0262] Optionally, under the current CE level, the network device 102 can configure multiple carriers for the terminal 101, and at least one carrier can be configured with at least one feature or feature combination corresponding NPRACH resource set.

[0263] Optionally, the features or feature combinations configured between different carriers can be independent (i.e., different carriers can support different features or feature combinations), or can be the same (i.e., different carriers support the same feature or feature combination). Where a carrier supports a feature or feature combination means that the carrier is configured with the NPRACH resource set corresponding to the feature or feature combination.

[0264] It can be understood that different carriers can support different features or feature combinations means that carrier#1 can be configured with a set of NPRACH resources corresponding to feature A, and carrier#2 can be configured with a set of NPRACH resources corresponding to feature combination C. Different carriers supporting the same feature or feature combination means that carrier#1 and carrier#2 can be configured with a set of NPRACH resources corresponding to feature A. However, the NPRACH resources corresponding to feature A on carrier#1 are independent of the NPRACH resources corresponding to feature A on carrier#2, that is, the NPRACH resources corresponding to feature A on carrier#1 and carrier#2 can be different (because the frequency domain positions of carrier#1 and carrier#2 are different, so it cannot be guaranteed that the NPRACH resources on the two carriers are the same).

[0265] Optionally, the first probability parameter is configured by the network device 102.

[0266] Optionally, the network device 102 sends the first probability parameter.

[0267] Optionally, the terminal 101 receives the first probability parameter sent by the network device 102.

[0268] Optionally, the first probability parameter corresponding to each feature or feature combination is the same or different.

[0269] In some embodiments, for example, the network device 102 configures a set of NPRACH resources corresponding to feature B and a set of legacy NPRACH resources for the current CE level, if the terminal 101 does not support feature B, or the terminal 101 supports feature B but does not currently meet the execution condition corresponding to feature B, the terminal 101 can select the set of legacy NPRACH resources as the candidate resource set (the candidate resource set only includes the set of legacy resources). It can be understood that in this case, the terminal 101 does not need to perform resource selection based on the priority information of the feature or feature combination. It can be envisaged that the carrier configured with the normal resource set can be one or more.

[0270] In some embodiments, for example, the network device 102 configures, for the current CE level, a NPRACH resource set corresponding to feature B and a legacy NPRACH resource set. If the terminal 101 supports feature B and currently meets the execution condition corresponding to feature B, the terminal 101 can select the NPRACH resource set corresponding to feature B as the candidate resource set (the candidate resource set only includes the resource set corresponding to feature B, and does not include the legacy resource set). It is conceivable that the carrier configured with the NPRACH resource set corresponding to feature B can be one or more.

[0271] In some embodiments, if the network device 102 does not configure any feature or feature combination corresponding NPRACH resource for the current CE level, only configures a legacy NPRACH resource set, the terminal 101 (regardless of whether the terminal 101 supports any feature, and whether any condition for executing transmission based on the feature is met) selects the legacy NPRACH resource set as the candidate resource set (the candidate resource set only includes the legacy resource set), and further, can perform carrier and NPRACH resource determination based on the traditional manner. It can be understood that in this case, the terminal 101 also does not need to select the resource based on the priority information of the feature or feature combination.

[0272] As an example, the features configured by the network device 102 for the current CE level include: feature A, feature B, feature combination: feature combination C (for example, C can be the combination of A and B). Based on the configuration of the network device 102, the terminal 101 first determines that the supported features under the current CE level include feature A, feature B, and the supported feature combination includes feature combination C. Further, the terminal 101 determines the NPRACH resource set corresponding to the feature or feature combination to be executed under the current CE level. Specifically, the terminal 101 selects a unique feature or feature combination from the multiple carriers configured by the network device 102 and the NPRACH resource set corresponding to each feature or feature combination on each carrier based on its own capabilities (which features or feature combinations are supported and whether the conditions for executing the transmission based on the features or feature combinations are met at present) and the priority information of the features or feature combinations. For example, the network device 102 configures the priority as: feature A > feature B > feature combination C, where feature A has the highest priority. Further, the terminal 101 selects feature A, feature B and feature combination C as candidate features or FCs according to its own supported capabilities and whether to execute the transmission based on some features (there may be certain judgment conditions for executing the transmission based on certain features, such as EDT transmission). If the terminal supports both feature A and feature B, for example, the terminal will select all of feature A, feature B and feature combination C as candidate features or FCs. Further, the terminal selects the feature or feature combination with the highest priority from the three according to the priority information, that is, the feature A with the highest priority is selected in the example. Further, there can be N carriers configured with feature A, and further, the terminal selects one of the carriers as a target carrier according to the first probability parameter, and then selects the NPRACH resource set corresponding to feature A on the target carrier as a target resource set to initiate random access.

[0273] It is contemplated that the N carriers can include 1 anchor carrier and N-1 non-anchor carriers, in which case the terminal 101 can select the anchor carrier as the target carrier based on the first probability parameters (e.g., the anchor carrier corresponds to a probability parameter of 1 / 3, and each of the remaining N-1 non-anchor carriers corresponds to a probability parameter of (2 / 3)*(1 / (N-1)), and initiate the random access using the NPRACH resource set corresponding to the feature A on the anchor carrier as the target resource set. Or the N carriers can include N non-anchor carriers, in which case the terminal 101 can select one of the non-anchor carriers as the target carrier based on the first probability parameters (e.g., each non-anchor carrier corresponds to a probability of 1 / N), and initiate the random access based on the NPRACH resource set corresponding to the feature A on the non-anchor carrier as the target resource set.

[0274] In addition, the first probability parameters for carrier selection corresponding to different features or FCs can be independently configured. Alternatively, the network device 102 can configure the first probability parameters for each feature or FC only when there is a corresponding feature or FC on the anchor carrier. If there is no feature or feature combination on the anchor carrier, the terminal selects one of the non-anchor carriers configured with the feature or FC based on a uniform random distribution.

[0275] In some embodiments, the terminal 101 can determine a first carrier from at least one carrier corresponding to the current CE level. Each of the determined first carriers is configured with a legacy NPRACH resource.

[0276] Further, if the number of the determined first carriers is multiple, the terminal 101 can determine the first probability parameters and determine a target carrier from the at least one first carrier based on the first probability parameters.

[0277] Further, the terminal 101 can determine a candidate resource set from the NPARCH resource sets configured on the target carrier based on its capability (which feature or feature combination is supported and whether the condition for performing transmission based on the feature or feature combination is met at present), wherein the candidate resource set includes: the NPRACH resource set corresponding to the feature or feature combination supported by the terminal 101, and / or the NPRACH resource set corresponding to the legacy random access.

[0278] As an example, assuming that the terminal 101 supports feature A and feature B, there are NPRACH resource sets corresponding to feature A, NPRACH resource sets corresponding to feature B and legacy NPRACH resource sets on the target carrier, the terminal 101 can take the NPRACH resource sets corresponding to feature A and feature B as the candidate resource set (the candidate resource set does not include legacy resource).

[0279] As an example, assuming that the terminal does not support feature A and feature B, there are NPRACH resource sets corresponding to feature A, NPRACH resource sets corresponding to feature B and legacy NPRACH resource sets on the target carrier, the terminal 101 takes the legacy NPRACH resource set as the candidate resource set, and the candidate resource set only includes one resource set (i.e. only includes the legacy resource set, and does not include any feature corresponding resource set).

[0280] As an example, assuming that the terminal supports feature A, but there is only legacy NPRACH resource set on the target carrier, the terminal 101 takes the legacy NPRACH resource set as the candidate resource set, and the candidate resource set only includes one resource set (i.e. only includes the legacy resource set).

[0281] As an example, assuming that the terminal supports feature A, there are NPRACH resource sets corresponding to feature A, NPRACH resource sets corresponding to feature B and legacy NPRACH resource sets on the target carrier, the terminal takes the NPRACH resource set corresponding to feature A as the candidate resource set, and the candidate resource set only includes one resource set (i.e. only includes the resource set corresponding to feature A).

[0282] Alternatively, in each of the above examples, instead of not supporting a feature, the terminal can support the feature, but does not meet the condition for performing transmission based on the feature at present.

[0283] Optionally, the candidate resource set includes a plurality of NPRACH resource sets corresponding to the characteristics or the characteristic combinations, and does not include a NPRACH resource set corresponding to the normal random access, and the terminal 101 can determine a target resource set from the candidate resource set based on the priority information, the target resource set including the first resource. The target carrier on which the target resource set is located is the carrier corresponding to the characteristics or the characteristic combinations with the largest number in the at least one first carrier.

[0284] Optionally, the candidate resource set includes one NPRACH resource set, and the terminal 101 can take the candidate resource set as the target resource set, the target resource set including the first resource. The one NPRACH resource set included in the candidate resource set is a NPRACH resource set corresponding to one characteristic or one characteristic combination. Alternatively, the one NPRACH resource set included in the candidate resource set is a legacy NPRACH resource set.

[0285] Optionally, the first probability parameter is configured by the network device 102.

[0286] Optionally, the network device 102 sends the first probability parameter.

[0287] Optionally, the terminal 101 receives the first probability parameter sent by the network device 102.

[0288] Optionally, the first probability parameter corresponding to each characteristic or characteristic combination is the same or different.

[0289] It should be noted that in the case described in the embodiment, as long as the network device 102 configures a non-anchor carrier and there is at least one non-anchor carrier including a legacy NPRACH resource, the first probability parameter will exist.

[0290] In some embodiments, the terminal 101 can determine a first carrier from at least one carrier corresponding to each characteristic or characteristic combination at the current CE level based on its own capability, wherein each first carrier is configured with: a normal NPRACH resource (legacy NPRACH resource), and / or a NPRACH resource set corresponding to a characteristic or a characteristic combination supported by the terminal 101.

[0291] As an example, for example, carrier #A, B, C contains a legacy NPRACH resource set and a NPRACH resource set corresponding to feature B, carrier #D, E, F contains a NPRACH resource set corresponding to feature A and a NPRACH resource set corresponding to feature B, carrier #H contains a NPRACH resource set corresponding to feature B, the terminal 101 supports feature A and supports feature B, then the terminal 101 will determine carrier #A, B, C, D, E, F, H as the first carrier.

[0292] Further, the terminal 101 determines a first probability parameter, and determines a target carrier from the above first carrier based on the first probability parameter.

[0293] As an example, for example, the first probability parameter is 1 / 3, and the above first carrier (carrier #A, B, C, D, E, F, H) includes an anchor carrier, then the terminal 101 will have a probability of 1 / 3 to select the anchor carrier as the target carrier, or with a probability of (2 / 3)*(1 / 6) to select one of the six non-anchor carriers as the target carrier in a uniform random distribution manner.

[0294] Optionally, a plurality of NPRACH resource sets corresponding to a plurality of features or feature combinations are configured on the above target carrier, a target resource set is determined from the plurality of NPRACH resource sets configured on the above target carrier based on the above priority information, and the target resource set includes the first resource. Wherein, the target resource set is a NPRACH resource set corresponding to a feature or feature combination with the highest priority among the plurality of features or feature combinations configured on the above target carrier.

[0295] As an example, if the terminal 101 selects one of carrier #A / B / C as the target carrier, the above target carrier is configured with a legacy NPRACH resource set and a NPRACH resource set corresponding to feature B, and the terminal 101 can determine the NPRACH resource set corresponding to feature B as the target resource set (the terminal 101 supports feature A and supports feature B).

[0296] As an example, if the terminal 101 selects one of the carriers #D / E / F as the target carrier, the target carrier is configured with the NPRACH resource set corresponding to the feature A and the NPRACH resource set corresponding to the feature B, the terminal 101 can determine the NPRACH resource set corresponding to the feature A as the target resource set based on the priority information of the features (e.g., the network device 102 configures the priority of the features corresponding to the target carrier as: feature A > feature B > feature combination C), since the terminal 101 supports the feature A and the feature B.

[0297] Optionally, the priority information of the features can also be specified by the protocol, e.g., the protocol specifies that the priority of the feature combination C is the highest.

[0298] As an example, if the terminal 101 selects the carrier #H as the target carrier, the target carrier is configured with only the NPRACH resource set corresponding to the feature B, the terminal 101 can directly determine the NPRACH resource set corresponding to the feature B as the target resource set (the terminal 101 supports the feature A and the feature B).

[0299] As another example, for example, the carriers #A, B, C contain the legacy NPRACH resource set and the NPRACH resource set corresponding to the feature A, the carriers #D, E, F contain the NPRACH resource set corresponding to the feature A and the NPRACH resource set corresponding to the feature B, and the carrier #H contains the NPRACH resource set corresponding to the feature B, if the terminal 101 only supports the feature A, the terminal 101 will determine the carriers #A, B, C, D, E, F as the first carriers.

[0300] Further, the terminal 101 determines the target carrier from the first carriers (carriers #A, B, C, D, E, F) based on the first probability parameter. For example, if the terminal 101 selects one of the carriers #A / B / C as the target carrier, the target carrier is configured with the legacy NPRACH resource set and the NPRACH resource set corresponding to the feature A, the terminal 101 can determine the NPRACH resource set corresponding to the feature A as the target resource set (the terminal 101 only supports the feature A). If the terminal 101 selects one of the carriers #D / E / F as the target carrier, the target carrier is configured with the NPRACH resource set corresponding to the feature A and the NPRACH resource set corresponding to the feature B, the terminal 101 can determine the NPRACH resource set corresponding to the feature A as the target resource set (the terminal 101 only supports the feature A).

[0301] As another example, for example, carrier #A, B, C contains a legacy NPRACH resource set and a NPRACH resource set corresponding to feature A, carrier #D, E, F contains a NPRACH resource set corresponding to feature A and a NPRACH resource set corresponding to feature B, and carrier #H contains a legacy NPRACH resource set, if the terminal 101 does not support feature A and feature B, the terminal 101 will determine carrier #A, B, C, H as the first carrier.

[0302] Further, the terminal 101 determines a target carrier from the above-mentioned first carrier (carrier #A, B, C, H) based on the first probability parameter. For example, if the terminal 101 selects one of carrier #A / B / C as the target carrier, the above-mentioned target carrier is configured with a legacy NPRACH resource set and a NPRACH resource set corresponding to feature A, and the terminal 101 can determine the legacy NPRACH resource set as the target resource set (the terminal 101 does not support feature A and feature B). If the terminal 101 selects carrier #H as the target carrier, the above-mentioned target carrier is configured with a legacy NPRACH resource set, and the terminal 101 can directly determine the legacy NPRACH resource set as the target resource set (the terminal 101 does not support feature A and feature B).

[0303] Optionally, the above-mentioned first probability parameter is configured by the network device 102.

[0304] Optionally, the network device 102 sends the above-mentioned first probability parameter.

[0305] Optionally, the terminal 101 receives the above-mentioned first probability parameter sent by the network device 102.

[0306] Optionally, the first probability parameter corresponding to each feature or feature combination is the same.

[0307] As an example, taking the case that the features include EDT, OCC, and the feature combination includes the combination of EDT and OCC (denoted as EDT+OCC), the terminal first determines the candidate carriers (i.e., the first carrier in the foregoing embodiments) available to the terminal based on the FC or Feature supported by the terminal and the configuration of the network device, and the candidate carriers can be multiple; in response to the candidate carriers being multiple, the target carrier can be determined based on a first probability parameter; in response to the target carrier containing more than one NPRACH resource set corresponding to the Feature or FC, the target NPRACH resource set is determined based on the Feature or FC priority information. Among the candidate carriers, at least one NPRACH resource is included: the NPRACH resource set corresponding to the Feature or FC supported by the terminal capability; the legacy NPRACH resource set (non-Feature or FC corresponding resource set).

[0308] Optionally, if the candidate carriers include an anchor carrier, the probability parameter, such as 1 / 3, means that there is a 1 / 3 probability of selecting the anchor carrier, and a 2 / 3 probability of selecting one of the remaining M candidate carriers (assuming that the total number of carriers configured for the terminal to support one feature is M+1); or a 2 / 3 probability of selecting the anchor and a 1 / 3 probability of selecting a non-anchor carrier; if the candidate carriers do not include an anchor carrier, the total probability of the non-anchor carriers is 1, and one of the non-anchor carriers is selected by uniform random distribution.

[0309] In some embodiments, for each of the foregoing embodiments, the terminal 101 can adjust the first probability parameter corresponding to each feature or feature combination based on the capability of the terminal 101 or the priority information described above.

[0310] Optionally, the terminal 101 can adjust the first probability parameter corresponding to each feature or feature combination based on the capability of the terminal 101.

[0311] Optionally, the terminal 101 can adjust the first probability parameter corresponding to each feature or feature combination based on the priority information described above.

[0312] Optionally, the terminal 101 can determine the probability value on the current optional carrier based on a certain scaling factor (which can be greater than 1 or less than 1).

[0313] As an example, taking EDT, OCC as the features, EDT+OCC as the feature combination (denoted as EDT+OCC) for example, carrier#1 is configured with EDT NPRACH resource, carrier#2 is configured with EDT NPRACH resource and OCC NPRACH resource, anchor carrier is configured with EDT NPRACH resource, and the probability of anchor carrier is 1 / 3. If terminal 101 only supports EDT, assuming the scaling factor for carrier#2 is 1 / 2, then the probability ratio of the three carriers (carrier#2, carrier#1 and anchor carrier) can be changed from 1:1:1 to 1 / 2:1:1 (i.e. 1:2:2).

[0314] Optionally, terminal 101 can make the probability of the selection of the corresponding carrier greater if the terminal 101 supports and is capable of performing more features or feature combinations.

[0315] As an example, terminal determines the carrier based on a scaling factor. For example, terminal supports EDT+OCC, carrier#1 is configured with EDT, carrier#2 is configured with OCC, and carrier#3 is configured with EDT only and OCC only, then the probability of the selection of carrier#3 is the greatest.

[0316] Optionally, terminal 101 can make the probability of the selection of the carrier for the current feature greater if the priority of the same feature or feature combination on different carriers is higher.

[0317] In some embodiments, for each of the foregoing embodiments, terminal 101 does not support any feature or feature combination corresponding to the current CE level, or terminal 101 is unable to perform any feature or feature combination corresponding to the current CE level based on the condition, and terminal 101 is capable of initiating a random access procedure based on the normal NPRACH resource.

[0318] In some embodiments, for each of the foregoing embodiments, terminal 101 can support multi-tone NPUSCH transmission.

[0319] In some embodiments, for terminal 101 supporting multi-tone NPUSCH transmission, if the target resource set contains the NPRACH resource subset corresponding to the capability information, terminal 101 initiates a random access procedure based on the NPRACH resource subset corresponding to the capability information.

[0320] In some embodiments, for a terminal 101 supporting multi-tone NPUSCH transmission, if the target resource set does not contain the NPRACH resource subset corresponding to the capability information, the terminal 101 initiates a random access procedure based on the resources in the target resource set;

[0321] wherein the capability information is sent by the terminal 101, and the capability information is used to indicate that the terminal 101 supports multi-tone NPUSCH transmission.

[0322] In some embodiments, the capability information is sent by the terminal 101 to the network device 102.

[0323] In some embodiments, the network device 102 receives the capability information.

[0324] In some embodiments, the terms “eNB”, “gNB”, “base station”, “NG-RAN node” and the like can be replaced with each other.

[0325] In some embodiments, the terms “bearer”, “Protocol Data Unit (PDU) session”, “Evolved Radio Access Bearer (E-RAB)”, “EPS bearer”, “QoS flow” and the like can be replaced with each other.

[0326] In some embodiments, the terms “Next Generation Application Proposal (NGAP)”, “S1 Application Proposal (S1AP)” and the like can be replaced with each other.

[0327] In some embodiments, the terms “Xn Application Proposal (XnAP)”, “X2 Application Proposal (X2AP)” and the like can be replaced with each other.

[0328] In some embodiments, the terms “carrier”, “band”, “frequency” and the like can be replaced with each other.

[0329] In some embodiments, the names of information and the like are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "field", "symbol", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", "chip", and the like can be replaced with each other.

[0330] In some embodiments, terms such as "physical downlink shared channel (PDSCH)", "DL data", and the like can be replaced with each other, and terms such as "physical uplink shared channel (PUSCH)", "UL data", and the like can be replaced with each other.

[0331] In some embodiments, terms such as "radio", "wireless", "radio access network (RAN)", "access network (AN)", "RAN-based", and the like can be replaced with each other.

[0332] In some embodiments, terms such as "resource block (RB)", "physical resource block (PRB)", "sub-carrier group (SCG)", "resource element group (REG)", "PRB pair", "RB pair", "resource element (RE)", "sub-carrier", and the like can be replaced with each other.

[0333] In some embodiments, “acquire”, “obtain”, “get”, “receive”, “transmit”, “bidirectionally transmit”, “send and / or receive” can be replaced by each other, which can be interpreted as receiving from other subjects, acquiring from protocols, acquiring from higher layers, obtaining by self-processing, implementing autonomously, and the like.

[0334] In some embodiments, the terms “send”, “transmit”, “report”, “issue”, “transmit”, “bidirectionally transmit”, “send and / or receive” can be replaced by each other.

[0335] In some embodiments, the terms “certain”, “preseted”, “preset”, “set”, “indicated”, “certain”, “arbitrary”, “first” and the like can be replaced by each other. “Certain A”, “preset A”, “preset A”, “set A”, “indicated A”, “certain A”, “arbitrary A”, “first A” can be interpreted as A specified in advance in protocols and the like, can be interpreted as A obtained by setting, configuring, or indicating, and the like, can be interpreted as certain A, certain A, arbitrary A, or first A, and the like, but is not limited thereto.

[0336] In some embodiments, the determination or judgment can be made by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values (for example, comparison with a predetermined value), but is not limited thereto.

[0337] The communication method related to the embodiments of the present disclosure can include at least one of steps S2101-S2104. For example, step 2101 can be implemented as an independent embodiment, step 2102 can be implemented as an independent embodiment, steps 2101+2102 can be implemented as an independent embodiment, step 2103 can be implemented as an independent embodiment, steps 2101+2102+2103 can be implemented as an independent embodiment, steps 2101+2102+2104 can be implemented as an independent embodiment, steps 2103+2104 can be implemented as an independent embodiment, steps 2101+2102+2103+2104 can be implemented as an independent embodiment, and the like, but is not limited thereto.

[0338] In some embodiments, the order of steps S2102 and S2103 can be exchanged or executed simultaneously.

[0339] In some embodiments, other optional implementations described before or after the description corresponding to FIG. 2A can be referred to.

[0340] FIG. 3A is a flow diagram of a random access method according to an embodiment of the present disclosure. As shown in FIG. 3A, the embodiment of the present disclosure relates to a random access method, the method is performed by the terminal 101, and the method comprises the following steps.

[0341] In step S3101, a coverage enhancement (CE) level is determined.

[0342] The optional implementation of step S3101 can refer to the optional implementation of step S2101 in FIG. 2A and other associated parts in the embodiments related to FIG. 2A, which will not be repeated here.

[0343] In step S3102, at least one NPRACH resource set corresponding to the CE level is obtained.

[0344] The optional implementation of step S3102 can refer to the optional implementation of step S2102 in FIG. 2A and other associated parts in the embodiments related to FIG. 2A, which will not be repeated here.

[0345] In step S3103, priority information of the characteristic and / or the characteristic combination is obtained.

[0346] The optional implementation of step S3103 can refer to the optional implementation of step S2103 in FIG. 2A and other associated parts in the embodiments related to FIG. 2A, which will not be repeated here.

[0347] In step S3104, a first resource is determined.

[0348] The optional implementation of step S3104 can refer to the optional implementation of step S2104 in FIG. 2A and other associated parts in the embodiments related to FIG. 2A, which will not be repeated here.

[0349] The communication method related to the embodiments of the present disclosure can comprise at least one of steps S3101-S3104. For example, step 3101 can be implemented as an independent embodiment, step 3102 can be implemented as an independent embodiment, steps 3101+3102 can be implemented as an independent embodiment, step 3103 can be implemented as an independent embodiment, steps 3101+3102+3103 can be implemented as an independent embodiment, steps 3101+3102+3104 can be implemented as an independent embodiment, steps 3103+3104 can be implemented as an independent embodiment, steps 3101+3102+3103+3104 can be implemented as an independent embodiment, and the like, but are not limited thereto.

[0350] In some embodiments, the order of steps S3102 and S3103 can be exchanged or performed simultaneously.

[0351] FIG. 3B is a flowchart of a random access method according to an embodiment of the present disclosure. As shown in FIG. 3B, the embodiment of the present disclosure relates to a random access method, the method is performed by the terminal 101, and the method comprises the following steps.

[0352] Step S3201: determining a coverage enhancement (CE) level.

[0353] The optional implementation of step S3201 can refer to the optional implementation of step S2101 in FIG. 2A, the optional implementation of step S3101 in FIG. 3A, and other associated parts in the embodiments related to FIG. 2A and FIG. 3A, which will not be repeated here.

[0354] Step S3202: obtaining at least one NPRACH resource set corresponding to the CE level.

[0355] The optional implementation of step S3202 can refer to the optional implementation of step S2102 in FIG. 2A, the optional implementation of step S3102 in FIG. 3A, and other associated parts in the embodiments related to FIG. 2A and FIG. 3A, which will not be repeated here.

[0356] Step S3203: determining a first resource.

[0357] The optional implementation of step S3203 can refer to the optional implementation of step S2104 in FIG. 2A, the optional implementation of step S3104 in FIG. 3A, and other associated parts in the embodiments related to FIG. 2A and FIG. 3A, which will not be repeated here.

[0358] The communication method related to the embodiments of the present disclosure can include at least one of steps S3201-S3203. For example, step 3201 can be implemented as an independent embodiment, steps 3201+3202 can be implemented as an independent embodiment, steps 3201+3203 can be implemented as an independent embodiment, steps 3201+3202+3203 can be implemented as an independent embodiment, and the like, but are not limited thereto.

[0359] FIG. 4A is a flowchart of a random access method according to an embodiment of the present disclosure. As shown in FIG. 4A, the embodiment of the present disclosure relates to a random access method, the method is performed by the network device 102, and the method comprises the following steps.

[0360] Step S4101: sending a first parameter to the terminal 101.

[0361] The optional implementation of step S4101 can refer to the optional implementation of step S2101 in FIG. 2A and other associated parts in the embodiments related to FIG. 2A, which will not be repeated here.

[0362] Step S4102: sending second information to the terminal 101.

[0363] The optional implementation of step S4102 can refer to the optional implementation of step S2102 in FIG. 2A and other associated parts in the embodiments related to FIG. 2A, which are not described here again.

[0364] Optionally, the second information is used to configure a set of NPRACH resources corresponding to each CE level, the set of NPRACH resources includes the first resource, the first resource is determined by the terminal 101 based on the capability and the first rule, and the first resource is used for the terminal 101 to initiate a random access process. The optional implementation of the terminal 101 determining the first resource can refer to the optional implementation of step S2104 in FIG. 2A and other associated parts in the embodiments related to FIG. 2A, which are not described here again.

[0365] In step S4103, the first information is sent to the terminal 101.

[0366] The optional implementation of step S4103 can refer to the optional implementation of step S2103 in FIG. 2A and other associated parts in the embodiments related to FIG. 2A, which are not described here again.

[0367] The communication method related to the embodiments of the present disclosure can include at least one of steps S3201-S3203. For example, step 3201 can be implemented as an independent embodiment, steps 3201+3202 can be implemented as an independent embodiment, steps 3201+3203 can be implemented as an independent embodiment, steps 3201+3202+3203 can be implemented as an independent embodiment, and the like, but are not limited thereto.

[0368] FIG. 4B is a flow diagram of a random access method according to an embodiment of the present disclosure. As shown in FIG. 4B, the embodiments of the present disclosure relate to a random access method, the method is performed by the network device 102, and the method includes the following steps.

[0369] In step S4201, the first parameter is sent to the terminal 101.

[0370] The optional implementation of step S4201 can refer to the optional implementation of step S2101 in FIG. 2A, the optional implementation of step S4101 in FIG. 4A, and other associated parts in the embodiments related to FIG. 2A and FIG. 4A, which are not described here again.

[0371] In step S4202, the second information is sent to the terminal 101.

[0372] The optional implementation of step S4202 can refer to the optional implementation of step S2102 in FIG. 2A, the optional implementation of step S4102 in FIG. 4A, and other associated parts in the embodiments related to FIG. 2A and FIG. 4A, which are not described here again.

[0373] The communication method related to the embodiments of the present disclosure can include at least one of steps S4201-S4202. For example, step 4201 can be implemented as an independent embodiment, step 4202 can be implemented as an independent embodiment, steps 4201+4202 can be implemented as an independent embodiment, and the like, but is not limited thereto.

[0374] The embodiments of the present disclosure also propose a device for implementing any of the above methods, for example, a device including units or modules for implementing each step performed by the terminal in any of the above methods. For another example, another device is also proposed, including units or modules for implementing each step performed by the network equipment (such as access network equipment, core network function node, core network equipment, etc.) in any of the above methods.

[0375] It should be understood that the division of each unit or module in the above device is only a logical function division, and all or part of them can be integrated into one physical entity or physically separated in actual implementation. In addition, the units or modules in the device can be implemented in the form of processor calling software: for example, the device includes a processor connected with a memory, the memory stores instructions, and the processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of each unit or module of the device, wherein the processor is a general processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory in the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuit, and the functions of part or all of the units or modules can be implemented by the design of hardware circuit, and the hardware circuit can be understood as one or more processors; for example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC), and the functions of part or all of the units or modules are implemented by the design of the logical relationship of elements in the circuit; for another example, in another implementation, the hardware circuit is a programmable logic device (PLD), and a field programmable gate array (FPGA) is taken as an example, which can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by a configuration file, so as to implement the functions of part or all of the units or modules. All units or modules of the above device can be implemented in the form of processor calling software, or all units or modules can be implemented in the form of hardware circuit, or part of the units or modules can be implemented in the form of processor calling software, and the remaining part can be implemented in the form of hardware circuit.

[0376] In the embodiments of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor can be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), a digital signal processor (DSP), and the like. In another implementation, the processor can implement certain functions through a logical relationship of hardware circuits, and the logical relationship of the hardware circuits is fixed or can be reconfigured. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In the reconfigurable hardware circuit, the processor loads a configuration document to implement the configuration of the hardware circuit. It can be understood that the processor loads instructions to implement the functions of the above part or all units or modules. In addition, the hardware circuit can also be designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), and the like.

[0377] FIG. 5A is a structural schematic diagram of a network device according to an embodiment of the present disclosure. As shown in FIG. 5A, the terminal 5100 can include at least one of a transceiver module 5101, a processing module 5102, and the like. In some embodiments, the processing module is configured to determine a coverage enhancement (CE) level. The processing module is further configured to determine a set of narrowband physical random access channel (NPRACH) resources corresponding to each characteristic or characteristic combination at the CE level, wherein the number of the characteristics or characteristic combinations is one or more. The processing module is further configured to determine a first resource from at least one set of NPRACH resources corresponding to the CE level based on a capability of the terminal and a first rule, wherein the first resource is used by the terminal to initiate a random access procedure.

[0378] Optionally, the method further includes:

[0379] The priority information of the at least one characteristic and / or characteristic combination is determined based on the first information sent by the network device, or based on a protocol agreement.

[0380] Optionally, the priority information satisfies at least one of the following:

[0381] The priority information of the characteristics or the characteristic combinations is independently configured under different CE levels.

[0382] The priority information of the characteristics or the characteristic combinations is the same under different CE levels.

[0383] Optionally, the method further comprises:

[0384] Based on the CE level, the capability of the terminal, the characteristics or the characteristic combinations, and the corresponding NPRACH resource set configuration parameters, a candidate resource set is determined for each characteristic or characteristic combination in at least one NPRACH resource set corresponding to the CE level.

[0385] In response to the candidate resource set including NPRACH resource sets corresponding to multiple characteristics or characteristic combinations, a target resource set is determined from the candidate resource set based on the priority information, and the target resource set includes the first resource.

[0386] In response to the candidate resource set including one NPRACH resource set, the candidate resource set is determined as the target resource set, and the target resource set includes the first resource.

[0387] Optionally, the determination of the first resource based on the capability of the terminal and the first rule comprises:

[0388] A first probability parameter is determined, and based on the first probability parameter, a first carrier is determined for each characteristic or characteristic combination in at least one carrier corresponding to the CE level, and each of the carriers is configured with an independent NPRACH resource set; and / or,

[0389] Based on the first probability parameter, a first carrier is determined for a general random access in at least one carrier corresponding to the CE level, and each of the carriers is configured with a general NPRACH resource set.

[0390] Based on the capability of the terminal, a candidate resource set is determined from the NPRACH resource set on at least one first carrier corresponding to the CE level.

[0391] Based on the priority information, a target resource set is determined from the candidate resource set, and the target resource set includes the first resource, wherein the candidate resource set includes NPRACH resource sets corresponding to multiple characteristics or characteristic combinations.

[0392] The target resource set is a resource set corresponding to a characteristic or characteristic combination with the highest priority among at least one characteristic and / or characteristic combination supported by the terminal.

[0393] Optionally, the determining the first resource based on the capability of the terminal and the first rule comprises:

[0394] determining a first probability parameter, and determining, based on the first probability parameter, a first carrier in at least one carrier corresponding to the CE level for each characteristic or characteristic combination, each of the carriers being configured with an independent set of NPRACH resources; and / or,

[0395] determining, based on the first probability parameter, a first carrier in at least one carrier corresponding to the CE level for a normal random access, each of the carriers being configured with a set of normal NPRACH resources;

[0396] determining, based on the capability of the terminal, a candidate resource set from the set of NPRACH resources on the at least one first carrier corresponding to the CE level;

[0397] determining, based on the priority information, a target resource set from the candidate resource set, the target resource set comprising the first resource, wherein the candidate resource set comprises a set of NPRACH resources corresponding to each characteristic or characteristic combination;

[0398] wherein the candidate resource set is a set of NPRACH resources on the first carrier corresponding to the characteristic or characteristic combination supported by the terminal, and the target carrier on which the target resource set is located is a carrier corresponding to the characteristic or characteristic combination with the largest number of carriers among the at least one first carrier.

[0399] Optionally, the method further comprises:

[0400] in response to the candidate resource set comprising one set of NPRACH resources, determining the candidate resource set as the target resource set, the target resource set comprising the first resource.

[0401] Optionally, the determining the first resource based on the capability of the terminal and the first rule comprises:

[0402] determining, based on the capability of the terminal and the priority information, a first carrier from at least one carrier corresponding to the CE level;

[0403] determining a first probability parameter, and determining, based on the first probability parameter, a target carrier from the at least one first carrier;

[0404] determining a set of NPARCH resources configured on the target carrier as a target resource set, the target resource set comprising the first resource;

[0405] The first carrier corresponds to a feature or a feature combination supported by the terminal and having the highest priority.

[0406] Optionally, the first resource is determined based on the capability of the terminal and a first rule, including:

[0407] A first carrier is determined from at least one carrier corresponding to the CE level, wherein each of the first carriers is configured with a normal NPRACH resource;

[0408] In response to the first carrier being a plurality, a first probability parameter is determined, and a target carrier is determined from the first carriers based on the first probability parameter;

[0409] A candidate resource set is determined from a set of NPRACH resources configured on the target carrier based on the capability of the terminal, the candidate resource set including a set of NPRACH resources corresponding to a feature or a feature combination supported by the terminal and / or a set of NPRACH resources corresponding to a normal random access;

[0410] In response to the candidate resource set including a plurality of sets of NPRACH resources and the candidate resource set not containing a set of NPRACH resources corresponding to a normal random access, a target resource set is determined from the candidate resource set based on the priority information, the target resource set including the first resource;

[0411] In response to the candidate resource set including one set of NPRACH resources, the candidate resource set is determined as the target resource set, the target resource set including the first resource.

[0412] Optionally, the first resource is determined based on the capability of the terminal and a first rule, including:

[0413] A first carrier is determined from at least one carrier corresponding to the CE level for each feature or feature combination based on the capability of the terminal, wherein each of the first carriers is configured with a normal NPRACH resource and / or a set of NPRACH resources corresponding to a feature or feature combination supported by the terminal;

[0414] A first probability parameter is determined, and a target carrier is determined from the first carriers based on the first probability parameter;

[0415] In response to the target carrier being configured with a plurality of sets of NPRACH resources corresponding to a feature or a feature combination, a target resource set is determined from a plurality of sets of NPRACH resources configured on the target carrier based on the priority information, the target resource set including the first resource.

[0416] Optionally, the first probability parameters corresponding to each of the above-mentioned features or feature combinations are the same or different.

[0417] Optionally, the first probability parameters corresponding to each of the above-mentioned features or feature combinations are the same.

[0418] Optionally, the method further comprises:

[0419] Adjusting the first probability parameters based on the capability of the terminal; or,

[0420] Adjusting the first probability parameters based on the priority information.

[0421] Optionally, the terminal supports multi-tone NPUSCH transmission.

[0422] In response to the target resource set containing a NPRACH resource subset corresponding to the capability information, the terminal initiates a random access procedure based on the NPRACH resource subset; or,

[0423] In response to the target resource set not containing the NPRACH resource subset corresponding to the capability information, the terminal initiates a random access procedure based on the resources in the target resource set.

[0424] The capability information is transmitted by the terminal, and the capability information is used to indicate that the terminal supports multi-tone NPUSCH transmission.

[0425] Optionally, the method further comprises:

[0426] The terminal does not support any of the above-mentioned features or feature combinations, and initiates the random access procedure based on a normal NPRACH resource.

[0427] Optionally, the features include at least one of early data transmission (EDT) and orthogonal cover code (OCC).

[0428] The feature combination includes a combination of EDT and OCC.

[0429] In some embodiments, the transceiving module can include a transmitting module and / or a receiving module, which can be separate or integrated together. Optionally, the transceiving module can be mutually replaced with a transceiver.

[0430] In some embodiments, the processing module can be one module or include multiple sub-modules. Optionally, the multiple sub-modules perform all or part of the steps required to be performed by the processing module. Optionally, the processing module can be mutually replaced with a processor.

[0431] FIG. 5B is a structural schematic diagram of a network device according to an embodiment of the present disclosure. As shown in FIG. 5B, the terminal 5200 can include at least one of a transceiver module 5201, a processing module 5202, and the like. In some embodiments, the transceiver module is configured to send, to a terminal, a first parameter, the first parameter being used to indicate a number of coverage enhancement (CE) levels of a current serving cell; and the transceiver module is further configured to send, to the terminal, second information, the second information being used to configure a resource set of a corresponding narrowband physical random access channel (NPRACH) at each of the CE levels; wherein the NPRACH resource set includes a first resource, the first resource being determined by the terminal based on a capability and a first rule, and the first resource being used for the terminal to initiate a random access procedure.

[0432] Optionally, the resource set of the corresponding NPRACH at each of the CE levels includes at least one resource set of the NPRACH corresponding to each of the characteristics or characteristic combinations, and / or a common resource set of the NPRACH.

[0433] Optionally, the method further includes:

[0434] sending, to the terminal, first information, the first information being used to determine priority information of the at least one characteristic and / or characteristic combination.

[0435] Optionally, the method further includes:

[0436] sending, to the terminal, a first probability parameter, the first probability parameter being used for the terminal to determine one carrier from at least one carrier corresponding to a current CE level.

[0437] Optionally, the first probability parameter corresponding to each of the characteristics or characteristic combinations is the same or different.

[0438] In some embodiments, the transceiver module can include a sending module and / or a receiving module, which can be separate or integrated together. Optionally, the transceiver module can be replaced by a transceiver.

[0439] In some embodiments, the processing module can be one module or include multiple sub-modules. Optionally, the multiple sub-modules perform all or part of the steps required to be performed by the processing module. Optionally, the processing module can be replaced by a processor.

[0440] FIG. 6A is a structural schematic diagram of a communication device 6100 according to an embodiment of the present disclosure. The communication device 6100 can be a network device (for example, an access network device, a core network device, etc.), a terminal (for example, a user equipment, etc.), a chip, a chip system, or a processor supporting the network device to implement any of the above methods, or a chip, a chip system, or a processor supporting the terminal to implement any of the above methods. The communication device 6100 can be used to implement the methods described in the above method embodiments, and details can be referred to the descriptions in the above method embodiments.

[0441] As shown in FIG. 6A, the communication device 6100 includes one or more processors 6101. The processor 6101 can be a general purpose processor or a special purpose processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (for example, a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process data of the programs. The communication device 6100 is used to execute any of the above methods.

[0442] In some embodiments, the communication device 6100 further includes one or more memories 6102 for storing instructions. Alternatively, all or part of the memory 6102 can also be outside the communication device 6100.

[0443] In some embodiments, the communication device 6100 further includes one or more transceivers 6103. When the communication device 6100 includes one or more transceivers 6103, the transceiver 6103 performs at least one of the communication steps such as transmitting and / or receiving in the above methods, and the processor 6101 performs at least one of the other steps.

[0444] In some embodiments, the transceiver can include a receiver and / or a transmitter, which can be separate or integrated together. Alternatively, the terms of transceiver, transceiving unit, transceiver, transceiving circuit, etc. can be replaced with each other, the terms of transmitter, transmitting unit, transmitter, transmitting circuit, etc. can be replaced with each other, and the terms of receiver, receiving unit, receiver, receiving circuit, etc. can be replaced with each other.

[0445] In some embodiments, the communication device 6100 can include one or more interface circuits 6104. Alternatively, the interface circuit 6104 is connected with the memory 6102, and the interface circuit 6104 can be used to receive signals from the memory 6102 or other devices, and can be used to send signals to the memory 6102 or other devices. For example, the interface circuit 6104 can read the instructions stored in the memory 6102 and send the instructions to the processor 6101.

[0446] The communication device 6100 described in the above embodiments can be a network device or a terminal, but the scope of the communication device 6100 described in the present disclosure is not limited thereto, and the structure of the communication device 6100 can not be limited by FIG. 6A. The communication device can be a standalone device or can be part of a larger device. For example, the communication device can be: (1) a standalone integrated circuit (IC), or a chip, or a chip system or subsystem; (2) a set of one or more ICs, which can optionally also include storage components for storing data, programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, a smart terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, and the like; (6) other devices, and the like.

[0447] FIG. 6B is a structural diagram of a chip 6200 according to an embodiment of the present disclosure. For the case where the communication device 6100 is a chip or a chip system, the structural diagram of the chip 6200 shown in FIG. 6B can be referred to, but is not limited thereto.

[0448] The chip 6200 includes one or more processors 6201, and the chip 6200 is configured to execute any of the above methods.

[0449] In some embodiments, the chip 6200 further includes one or more interface circuits 6202. Optionally, the interface circuit 6202 is connected with the memory 6203, and the interface circuit 6202 can be configured to receive signals from the memory 6203 or other devices, and the interface circuit 6202 can be configured to send signals to the memory 6203 or other devices. For example, the interface circuit 6202 can read instructions stored in the memory 6203 and send the instructions to the processor 6201.

[0450] In some embodiments, the interface circuit 6202 performs at least one of the communication steps (such as step 2101, step 2105, but not limited thereto) in the above methods, and the processor 6201 performs at least one of the other steps (such as step 2102, step 2103, step 2104, but not limited thereto).

[0451] In some embodiments, the terms interface circuit, interface, transceiver pin, and transceiver can be replaced with each other.

[0452] In some embodiments, the chip 6200 further includes one or more memories 6203 for storing instructions. Optionally, all or part of the memory 6203 can be outside the chip 6200.

[0453] The disclosure further provides a storage medium having stored instructions which, when executed on the communication device 6100, cause the communication device 6100 to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto, and can also be a storage medium readable by other apparatuses. Optionally, the storage medium can be a non-transitory storage medium, but is not limited thereto, and can also be a transitory storage medium.

[0454] The disclosure further provides a program product which, when executed by the communication device 6100, causes the communication device 6100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0455] The disclosure further provides a computer program which, when executed on a computer, causes the computer to perform any of the above methods.

[0456] In the above embodiments, all or some of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or some of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer programs are loaded on a computer and executed, all or some of the processes or functions described in the embodiments of the disclosure are generated. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer programs can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer programs can be transferred from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) manner. The computer readable storage medium can be any available medium accessible by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media sets. The available media can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a high-density digital video disc (DVD)), or a semiconductor medium (such as a solid state disk (SSD)), etc.

[0457] Those skilled in the art can clearly understand that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software manner depends on specific application and design constraints of the technical solutions. Those skilled in the art can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present disclosure.

[0458] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0459] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A random access method, characterized in that, The method is executed by a terminal, and the method includes: Determine the coverage enhancement CE level; Determine the resource set of the Narrowband Physical Random Access Channel (NPRACH) corresponding to each feature or feature combination under the CE level, wherein the number of features or feature combinations is one or more; Based on the terminal's capabilities and the first rule, a first resource is determined from at least one NPRACH resource set corresponding to the CE level. The first resource is used by the terminal to initiate a random access procedure.

2. The method according to claim 1, characterized in that, The method further includes: Priority information for the at least one feature and / or combination of features is determined based on the first information sent by the network device, or based on the agreement of the protocol.

3. The method according to claim 2, characterized in that, The priority information satisfies at least one of the following: Under different CE levels, the priority information of the features or combinations of features is configured independently; The priority information for the features or combinations of features is the same across different CE levels.

4. The method according to claim 2 or 3, characterized in that, The method further includes: Based on the CE level, the terminal's capabilities, the feature or feature combination, and the corresponding NPRACH resource set configuration parameters, a candidate resource set is determined for each feature or feature combination in at least one NPRACH resource set corresponding to the CE level. In response to the fact that the candidate resource set includes multiple NPRACH resource sets corresponding to features or combinations of features, a target resource set is determined from the candidate resource set based on the priority information, and the target resource set includes the first resource; In response to the candidate resource set including an NPRACH resource set, the candidate resource set is determined as the target resource set, the target resource set including the first resource.

5. The method according to claim 2 or 3, characterized in that, The determination of the first resource based on the terminal's capabilities and the first rule includes: A first probability parameter is determined; based on the first probability parameter, a first carrier is determined from at least one carrier corresponding to each characteristic or combination of characteristics under the CE level, wherein each carrier is configured with an independent NPRACH resource set; and / or, Based on the first probability parameter, a first carrier is determined from at least one carrier corresponding to the CE level for ordinary random access, and each carrier is configured with an ordinary NPRACH resource set. Based on the capabilities of the terminal, a candidate resource set is determined from the NPRACH resource set on at least one first carrier corresponding to the CE level; Based on the priority information, a target resource set is determined from the candidate resource set, the target resource set including the first resource, wherein the candidate resource set includes multiple NPRACH resource sets corresponding to features or combinations of features; The target resource set is the resource set corresponding to the highest priority feature or feature combination among at least one feature and / or feature combination supported by the terminal.

6. The method according to claim 2 or 3, characterized in that, The determination of the first resource based on the terminal's capabilities and the first rule includes: A first probability parameter is determined; based on the first probability parameter, a first carrier is determined from at least one carrier corresponding to each characteristic or combination of characteristics under the CE level, wherein each carrier is configured with an independent NPRACH resource set; and / or, Based on the first probability parameter, a first carrier is determined from at least one carrier corresponding to the CE level for ordinary random access, and each carrier is configured with an ordinary NPRACH resource set. Based on the capabilities of the terminal, a candidate resource set is determined from the NPRACH resource set on at least one first carrier corresponding to the CE level; Based on the priority information, a target resource set is determined from the candidate resource set, the target resource set including the first resource, wherein the candidate resource set includes multiple NPRACH resource sets corresponding to features or combinations of features; The candidate resource set is the NPRACH resource set on the first carrier corresponding to the features or feature combinations supported by the terminal, and the target carrier where the target resource set is located is the carrier with the largest number of corresponding features or feature combinations among the at least one first carrier.

7. The method according to any one of claims 5-6, characterized in that, The method further includes: In response to the candidate resource set including an NPRACH resource set, the candidate resource set is determined as the target resource set, the target resource set including the first resource.

8. The method according to claim 2 or 3, characterized in that, The determination of the first resource based on the terminal's capabilities and the first rule includes: Based on the terminal's capabilities and the priority information, a first carrier is determined from at least one carrier corresponding to the CE level; A first probability parameter is determined, and a target carrier is determined from the at least one first carrier based on the first probability parameter; The NPARCH resource set configured on the target carrier is determined as the target resource set, and the target resource set includes the first resource; Wherein, the first carrier is the carrier corresponding to the highest priority feature or feature combination supported by the terminal.

9. The method according to claim 2 or 3, characterized in that, The determination of the first resource based on the terminal's capabilities and the first rule includes: A first carrier is determined from at least one carrier corresponding to the CE level, wherein each of the first carriers is configured with ordinary NPRACH resources; In response to the fact that there are multiple first carriers, a first probability parameter is determined, and a target carrier is determined from the first carriers based on the first probability parameter; Based on the capabilities of the terminal, a candidate resource set is determined from the NPARCH resource set configured on the target carrier. The candidate resource set includes: the NPARCH resource set corresponding to the features or feature combinations supported by the terminal, and / or the NPARCH resource set corresponding to ordinary random access. In response to the fact that the candidate resource set includes multiple NPRACH resource sets and the candidate resource set does not contain an NPRACH resource set corresponding to ordinary random access, a target resource set is determined from the candidate resource set based on the priority information, and the target resource set includes the first resource; In response to the candidate resource set including an NPRACH resource set, the candidate resource set is determined as the target resource set, the target resource set including the first resource.

10. The method according to claim 2 or 3, characterized in that, The determination of the first resource based on the terminal's capabilities and the first rule includes: Based on the capabilities of the terminal, a first carrier is determined from at least one carrier corresponding to each feature or feature combination under the CE level, wherein each first carrier is configured with ordinary NPRACH resources and / or NPRACH resources corresponding to the features or feature combinations supported by the terminal; Determine a first probability parameter, and determine a target carrier from the first carrier based on the first probability parameter; In response to the fact that multiple NPRACH resource sets corresponding to multiple features or combinations of features are configured on the target carrier, a target resource set is determined from the multiple NPRACH resource sets configured on the target carrier based on the priority information, and the target resource set includes the first resource.

11. The method according to any one of claims 5-9, characterized in that, The first probability parameter corresponding to each of the aforementioned characteristics or combinations of characteristics may be the same or different.

12. The method according to claim 10, characterized in that, The first probability parameter is the same for each of the aforementioned characteristics or combinations of characteristics.

13. The method according to any one of claims 5-12, characterized in that, The method further includes: Based on the capabilities of the terminal, adjust the first probability parameter; or... Based on the priority information, the first probability parameter is adjusted.

14. The method according to any one of claims 4-13, characterized in that, The terminal supports multi-tone NPUSCH transmission; In response to the fact that the target resource set contains a subset of NPRACH resources corresponding to the capability information, the terminal initiates a random access procedure based on the subset of NPRACH resources. or, In response to the fact that the target resource set does not contain the NPRACH resource subset corresponding to the capability information, the terminal initiates a random access procedure based on the resources in the target resource set; The capability information is sent by the terminal, and the capability information is used to indicate that the terminal supports multi-tone NPUSCH transmission.

15. The method according to any one of claims 1-14, characterized in that, The method further includes: The terminal does not support any of the features or combinations thereof, and initiates the random access procedure based on ordinary NPRACH resources.

16. The method according to any one of claims 1-15, characterized in that, The features include at least one of Data Advance Transmission (EDT) and Orthogonal Cover Code (OCC); The combination of features includes a combination of EDT and OCC.

17. A random access method, characterized in that, The method is performed by a network device, and the method includes: Send a first parameter to the terminal, the first parameter being used to indicate the number of coverage enhancement CE levels of the current serving cell; Send second information to the terminal, the second information being used to configure the resource set of the Narrowband Physical Random Access Channel (NPRACH) corresponding to each CE level; The NPRACH resource set includes a first resource, which is determined by the terminal based on its capabilities and a first rule. The first resource is used by the terminal to initiate a random access procedure.

18. The method according to claim 17, characterized in that, The resource set of NPRACH corresponding to each CE level includes: a resource set of NPRACH corresponding to at least one feature or combination of features, and / or, a general NPRACH resource set.

19. The method according to claim 18, characterized in that, The method further includes: Send first information to the terminal, the first information being used to determine priority information for the at least one feature and / or combination of features.

20. The method according to any one of claims 17-19, characterized in that, The method further includes: A first probability parameter is sent to the terminal, the first probability parameter being used by the terminal to determine a carrier from at least one carrier corresponding to the current CE level.

21. The method according to claim 20, characterized in that, The first probability parameter may be the same or different for each feature or combination of features.

22. A terminal, characterized in that, The terminal includes: The processing module is used to determine the coverage enhancement CE level; The processing module is further configured to determine the resource set of the narrowband physical random access channel NPRACH corresponding to each feature or feature combination under the CE level, wherein the number of features or feature combinations is one or more. The processing module is further configured to determine a first resource from at least one NPRACH resource set corresponding to the CE level based on the capabilities of the terminal and the first rule, wherein the first resource is used by the terminal to initiate a random access procedure.

23. A network device, characterized in that, The network device includes: The transceiver module is used to send a first parameter to the terminal, wherein the first parameter is used to indicate the number of coverage enhancement CE levels of the current serving cell; The transceiver module is further configured to send second information to the terminal, the second information being configured to set the resource set of the narrowband physical random access channel (NPRACH) corresponding to each CE level; The NPRACH resource set includes a first resource, which is determined by the terminal based on its capabilities and a first rule. The first resource is used by the terminal to initiate a random access procedure.

24. A terminal, characterized in that, The terminal includes: One or more processors; The terminal is used to execute the random access method according to any one of claims 1-16.

25. A network device, characterized in that, The network device includes: One or more processors; The terminal is used to execute the random access method according to any one of claims 17-21.

26. A communication system, characterized in that, The device includes a terminal and a network device, wherein the terminal is configured to implement the information transmission method according to any one of claims 1-16, and the network device is configured to implement the information transmission method according to any one of claims 17-21.

27. A storage medium storing instructions, characterized in that, When the instruction is executed on the communication device, the communication device performs the random access method as described in any one of claims 1-16, or performs the random access method as described in any one of claims 17-21.

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