Communication method, terminal, network device, system, and storage medium

Abstract

The present disclosure relates to a communication method, a terminal, a network device, a system, and a storage medium. The method comprises: receiving first information sent by a network device, the first information comprising frequency domain information of a synchronization signal block (SSB) beam; determining a target SSB beam from among the SSB beams according to the first information; and determining a random access resource of a terminal according to the target SSB beam. This enables a terminal to determine frequency domain positions of different SSB beams on the basis of frequency domain information, and detect SSB beams on the basis of the frequency domain positions so as to determine random access resources of the terminal, thereby improving the accuracy of a random access process in a communication system and ensuring communication performance.

Description

Communication method, terminal, network device, system and storage medium TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and particularly relates to a communication method, a terminal, a network device, a system and a storage medium. BACKGROUND

[0002] In application scenarios such as AR (Augmented Reality) / VR (Virtual Reality), vehicle network, Internet of Things, holographic communication, and ultra-high-definition video transmission, ultra-high rate, ultra-low latency, and ultra-large bandwidth communication become the norm. The bandwidth of existing FR1 (Frequency Range 1) and FR2 (Frequency Range 2) is limited and cannot support service data transmission in the above application scenarios. Therefore, higher frequency bands, such as sub-THz and THz, need to be used. According to the electromagnetic wave space loss model, the free space loss of high frequency is higher, and the same transmission power results in a shorter radiation distance. Therefore, a large-scale MIMO (Multiple Input Multiple Output) beamforming method is needed to solve the problem of short transmission distance.

[0003] SUMMARY

[0004] To overcome the technical problem of unclear beam indication in the related art, the present disclosure provides a communication method, a terminal, a network device, a system and a storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a communication method is provided, which is performed by a terminal, and the method comprises:

[0006] receiving first information sent by a network device, wherein the first information comprises frequency domain information of a synchronization signal block (SSB) beam;

[0007] determining a target SSB beam from the SSB beam according to the first information;

[0008] determining a random access resource of the terminal according to the target SSB beam.

[0009] According to a second aspect of an embodiment of the present disclosure, a communication method is provided, which is performed by a network device, and the method comprises:

[0010] sending first information to a terminal, wherein the first information comprises frequency domain information of a SSB beam, and the first information is used to instruct the terminal to determine a random access resource according to the first information.

[0011] According to a third aspect of embodiments of the present disclosure, a terminal is provided, comprising:

[0012] a transceiver configured to receive first information transmitted by a network device, the first information comprising frequency domain information of synchronization signal block, SSB, beams;

[0013] a processor configured to determine a target SSB beam from the SSB beams according to the first information;

[0014] the processor is further configured to determine a random access resource of the terminal according to the target SSB beam.

[0015] According to a fourth aspect of embodiments of the present disclosure, a network device is provided, comprising:

[0016] a transceiver configured to transmit first information to a terminal, the first information comprising frequency domain information of SSB beams, the first information being used to instruct the terminal to determine a random access resource according to the first information.

[0017] According to a fifth aspect of embodiments of the present disclosure, a terminal is provided, comprising:

[0018] one or more processors;

[0019] wherein the terminal is configured to perform the communication method of any one of the first aspect of the present disclosure.

[0020] According to a sixth aspect of embodiments of the present disclosure, a network device is provided, comprising:

[0021] one or more processors;

[0022] wherein the network device is configured to perform the communication method of any one of the second aspect of the present disclosure.

[0023] According to a seventh aspect of embodiments of the present disclosure, a communication system is provided, comprising a terminal and a network device;

[0024] wherein the terminal is configured to receive first information transmitted by a network device, the first information comprising frequency domain information of synchronization signal block, SSB, beams, and determine a target SSB beam from the SSB beams according to the first information; and the network device is configured to transmit first information to the terminal, the first information comprising frequency domain information of SSB beams, the first information being used to instruct the terminal to determine a random access resource according to the first information.

[0025] According to an eighth aspect of the embodiments of the present disclosure, a storage medium is provided, which stores instructions. When the instructions are executed on a communication device, the communication device performs the communication method according to any one of the first aspect of the present disclosure, or the communication device performs the communication method according to any one of the second aspect of the present disclosure.

[0026] According to a ninth aspect of the embodiments of the present disclosure, a computer program product is provided, which includes a computer program and / or instructions. When the computer program and / or instructions are executed on a communication device, the communication method according to any one of the first aspect of the present disclosure is implemented, or the communication method according to any one of the second aspect of the present disclosure is implemented.

[0027] With the above technical solutions, at least the following beneficial technical effects can be achieved:

[0028] The first information transmitted by the network device is received, the first information including frequency domain information of a synchronization signal block (SSB) beam, a target SSB beam is determined from the SSB beam according to the first information, and a random access resource of the terminal is determined according to the target SSB beam. Thus, the terminal determines the frequency domain positions of different SSB beams based on the frequency domain information, detects the SSB beams based on the frequency domain positions, determines the random access resource of the terminal, improves the accuracy of the random access process in the communication system, speeds up the random access process, and guarantees the communication performance. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following describes the drawings required for the embodiments, and the following drawings are only some embodiments of the present disclosure, and do not specifically limit the protection scope of the present disclosure.

[0030] FIG. 1A is a schematic diagram of an architecture of a communication system according to an embodiment of the present disclosure.

[0031] FIG. 1B is a schematic diagram of a beam squint according to an embodiment of the present disclosure.

[0032] FIG. 1C is a schematic diagram of a radio frequency chain according to an embodiment of the present disclosure.

[0033] FIG. 1D is a schematic diagram of a beam representation mode 1 according to an embodiment of the present disclosure.

[0034] FIG. 1E is a schematic diagram of a beam representation mode 2 according to an embodiment of the present disclosure.

[0035] FIG. 1F is a simulation effect diagram according to an embodiment of the present disclosure.

[0036] FIG. 2A is an interaction diagram of a communication method according to an embodiment of the present disclosure.

[0037] FIG. 2B is a schematic diagram of random access resources according to an embodiment of the present disclosure.

[0038] FIG. 2C is a schematic diagram of random access resources according to an embodiment of the present disclosure.

[0039] FIG. 3 is a flow diagram of a communication method according to an embodiment of the present disclosure.

[0040] FIG. 4 is a flow diagram of a communication method according to an embodiment of the present disclosure.

[0041] FIG. 5A is a schematic diagram of a communication method according to an embodiment of the present disclosure.

[0042] FIG. 5B is a schematic diagram of a communication method according to an embodiment of the present disclosure.

[0043] FIG. 6 is a schematic diagram of a structure of a terminal according to an embodiment of the present disclosure.

[0044] FIG. 7 is a schematic diagram of a structure of a network device according to an embodiment of the present disclosure.

[0045] FIG. 8 is a schematic diagram of a structure of a communication device 8100 according to an embodiment of the present disclosure.

[0046] FIG. 9 is a schematic diagram of a structure of a chip 8200 according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0047] Embodiments of the present disclosure provide a communication method, a terminal, a network device, a system and a storage medium.

[0048] In a first aspect, embodiments of the present disclosure provide a communication method performed by a terminal, the method comprising:

[0049] receiving first information sent by a network device, the first information comprising frequency domain information of synchronization signal block (SSB) beams;

[0050] determining a target SSB beam from the SSB beams according to the first information;

[0051] determining random access resources of the terminal according to the target SSB beam.

[0052] In the above embodiments, the frequency domain position of the SSB beam is determined based on the frequency domain information, the SSB beam is detected through the frequency domain position, and the random access resources of the terminal are determined, thereby improving the accuracy of the random access process in the communication system and guaranteeing the communication performance.

[0053] In some embodiments in combination with the first aspect, in some embodiments, the frequency domain information comprises frequency domain index information of the SSB beam.

[0054] In the above embodiment, the frequency domain position of the SSB beam is indicated by the frequency domain index information, so that the network device can send multiple SSB beams at the same time, speed up the random access process, and ensure the performance of the communication system.

[0055] In some embodiments of the first aspect, the frequency domain index information includes subcarrier index information and / or subband index information.

[0056] In the above embodiment, the frequency domain position of the SSB beam is indicated by indicating the subcarrier index and / or the subband index, providing multiple ways of indicating frequency domain information. On the premise of ensuring correct indication, the terminal can use multiple ways to indicate the frequency domain information, improving the robustness of the indication method.

[0057] In some embodiments of the first aspect, the frequency domain index information includes subband index information, and the subband index information includes bit information, where the bit information is used to indicate the frequency domain subband index of the SSB beam.

[0058] In the above embodiment, the bit information is added in the subband width index to indicate the frequency domain subband index of different beams. On the premise of ensuring the accuracy of SSB beam indication, the random access process is speeded up, and the system performance is improved.

[0059] In some embodiments of the first aspect, the terminal includes a set mapping relationship, which is used to indicate a one-to-one correspondence between multiple subband index information and multiple bit numbers on the bit information. According to the first information, the target SSB beam is determined from the SSB beam, including:

[0060] According to the number of bits on the bit information, the frequency domain position information corresponding to the SSB beam is determined based on the set mapping relationship.

[0061] According to the frequency domain position information, the target SSB beam is determined from the SSB beam.

[0062] In the above embodiment, the correspondence between the number of bits on the bit information and the subband index is configured, and the frequency domain position information of the SSB beam is determined, so as to speed up the random access process and improve the system performance.

[0063] In some embodiments of the first aspect, the SSB beam is multiple SSB beams, and the frequency domain information includes multiple frequency domain index information of the multiple SSB beams, where the SSB indexes of the multiple SSB beams are the same.

[0064] In the above embodiment, when the SSB indexes of the plurality of SSB beams are the same, the plurality of SSB beams are respectively indicated by the newly added frequency domain indexes, so as to avoid identification confusion among the plurality of SSB beams, and ensure the identification performance of the terminal.

[0065] In combination with some embodiments of the first aspect, in some embodiments, the first information is carried by a management information block (MIB).

[0066] In the above embodiment, the frequency domain information is transmitted based on the MIB, so as to reduce the signal search time in the terminal, reduce the energy consumption of the terminal, and improve the spectrum efficiency.

[0067] In combination with some embodiments of the first aspect, in some embodiments, the frequency domain information includes a demodulation reference signal (DMRS) sequence of the SSB beam.

[0068] In the above embodiment, the frequency domain index of the SSB beam is indicated by the DMRS sequence, so as to reduce the beam scanning process in the terminal, reduce the energy consumption in the terminal, improve the accuracy of beamforming, and enhance the directivity and coverage range of the signal.

[0069] In combination with some embodiments of the first aspect, in some embodiments, the random access resource includes a random access resource block (RO) and / or a random access (RA) preamble set.

[0070] In the above embodiment, the terminal can determine the SSB beam according to the frequency domain information, select different random access resources according to different target SSB beams to report the beam information, and improve the flexibility of the random access resource in the terminal, so as to adapt to different service requirements and network conditions.

[0071] In combination with some embodiments of the first aspect, in some embodiments, the frequency information includes a plurality of frequency domain index information of the SSB beam, the random access resource includes the RO, and the determination of the random access resource of the terminal according to the target SSB beam includes:

[0072] The ROs associated with the plurality of frequency domain index information are determined to be different;

[0073] According to the target frequency domain index information of the target SSB beam, target frequency domain position information of the target SSB beam is determined.

[0074] According to the target frequency domain position information, the corresponding target RO is determined as the random access resource.

[0075] In the above embodiment, when the ROs associated with the frequency domain index information are different, the random access is initiated on the target RO corresponding to the target SSB beam, so as to ensure the accurate identification of the SSB beam corresponding to the random access resource.

[0076] In some embodiments of the first aspect, in some embodiments, the frequency information comprises a plurality of frequency domain index information of the SSB beam, the random access resource comprises the RO and the set of RA preambles, and the determining, according to the target SSB beam, of the random access resource of the terminal comprises:

[0077] determining that the ROs associated with the plurality of frequency domain index information are the same;

[0078] determining, according to target frequency domain index information of the target SSB beam, target frequency domain position information of the target SSB beam;

[0079] determining, according to the target frequency domain position information, a target RO corresponding to the target RA as the random access resource.

[0080] In the above embodiments, when the ROs associated with the frequency domain index information are the same, different RAs are used as the random access resource to initiate the random access process, thereby ensuring accurate identification of the random access resource corresponding to the SSB beam.

[0081] In some embodiments of the first aspect, in some embodiments, the method further comprises:

[0082] sending, to the network device, random access information based on the random access resource.

[0083] In the above embodiments, the terminal initiates the random access to the network device according to the determined random access resource, thereby ensuring the accuracy of the random access process and guaranteeing the communication performance.

[0084] In a second aspect, the embodiments of the present disclosure provide a communication method, performed by a network device, the method comprising:

[0085] sending, to a terminal, first information, the first information comprising frequency domain information of an SSB beam, the first information being used to instruct the terminal to determine a random access resource according to the first information.

[0086] In some embodiments of the second aspect, in some embodiments, the frequency domain information comprises frequency domain index information of the SSB beam.

[0087] In some embodiments of the second aspect, in some embodiments, the frequency domain index information comprises subcarrier index information and / or subband index information.

[0088] In some embodiments of the second aspect, in some embodiments, the frequency domain index information comprises subband index information, and the subband index information comprises bit information, wherein the bit information is used to indicate a frequency domain subband index of the SSB beam.

[0089] In some embodiments of the second aspect, in some embodiments, the SSB beam comprises a plurality of SSB beams, and the frequency domain information comprises a plurality of frequency domain index information of the plurality of SSB beams, wherein SSB indexes of the plurality of SSB beams are the same.

[0090] In some embodiments of the second aspect, in some embodiments, the first information is carried by a master information block (MIB).

[0091] In some embodiments of the second aspect, in some embodiments, the frequency domain information comprises a DMRS sequence of the SSB beam.

[0092] In some embodiments of the second aspect, in some embodiments, the method further comprises:

[0093] receiving random access information sent by the terminal based on the random access resource.

[0094] In a third aspect, the embodiments of the present disclosure provide a terminal, comprising:

[0095] a transceiver module, configured to receive first information sent by a network device, the first information comprising frequency domain information of a synchronization signal block (SSB) beam;

[0096] a processing module, configured to determine a target SSB beam from the SSB beam according to the first information;

[0097] the processing module is further configured to determine a random access resource of the terminal according to the target SSB beam.

[0098] In a fourth aspect, the embodiments of the present disclosure provide a network device, comprising:

[0099] a transceiver module, configured to send first information to a terminal, the first information comprising frequency domain information of an SSB beam, the first information being used to instruct the terminal to determine a random access resource according to the first information.

[0100] In a fifth aspect, the embodiments of the present disclosure provide a terminal, comprising:

[0101] one or more processors;

[0102] The terminal is configured to perform the communication method of any one of the first aspect of the present disclosure.

[0103] In a sixth aspect, the embodiments of the present disclosure provide a network device, comprising:

[0104] one or more processors;

[0105] The network device is configured to perform the communication method of any one of the second aspect of the present disclosure.

[0106] In a seventh aspect, an embodiment of the present disclosure provides a communication system, including a terminal and a network device;

[0107] The terminal is configured to receive first information sent by the network device, the first information including frequency domain information of a synchronization signal block (SSB) beam, determine a target SSB beam from the SSB beam according to the first information, and determine a random access resource of the terminal according to the target SSB beam. The network device is configured to send the first information to the terminal, the first information including frequency domain information of an SSB beam, and the first information being used to instruct the terminal to determine a random access resource according to the first information.

[0108] In an eighth aspect, an embodiment of the present disclosure provides a storage medium, which stores instructions, when the instructions are executed on a communication device, cause the communication device to perform the communication method according to any one of the first aspect of the present disclosure, or cause the communication device to perform the communication method according to any one of the second aspect of the present disclosure.

[0109] In a ninth aspect, an embodiment of the present disclosure provides a computer program product, including a computer program and / or instructions, when the computer program and / or instructions are executed on a communication device, implement the communication method according to any one of the first aspect of the present disclosure, or when the computer program and / or instructions are executed on a communication device, implement the communication method according to any one of the second aspect of the present disclosure.

[0110] In a tenth aspect, an embodiment of the present disclosure provides a computer program, when executed on a computer, causes the computer to perform the method described in the optional implementation of the first aspect and / or the second aspect.

[0111] In an eleventh aspect, an embodiment of the present disclosure provides a chip or chip system. The chip or chip system includes processing circuitry configured to perform the method described in the first aspect and / or the optional implementation of the second aspect.

[0112] It can be understood that the terminal, the network device, the communication device, the communication system, the storage medium, the program product, the computer program, the chip or the chip system are all used to execute the method proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved are referred to the beneficial effects in the corresponding method, which will not be described here.

[0113] The embodiments of the present disclosure provide a communication method, a terminal, a network device, a system and a storage medium. In some embodiments, the terms of beam indication method, information processing method, communication method, and the like can be replaced with each other, the terms of beam indication apparatus, information processing apparatus, communication apparatus, and the like can be replaced with each other, and the terms of communication system, information processing system, beam indication system, and the like can be replaced with each other.

[0114] The embodiments of the present disclosure are not exhaustive, but only illustrate some embodiments, and are not specific limitations on the protection scope of the present disclosure. In the case of no contradiction, each step in an embodiment can be implemented as an independent embodiment, and the steps can be combined arbitrarily, for example, the scheme after removing some steps in an embodiment can also be implemented as an independent embodiment, and the order of the steps in an embodiment can be exchanged arbitrarily, in addition, the optional implementation manners in an embodiment can be combined arbitrarily; in addition, the embodiments can be combined arbitrarily, for example, the steps of different embodiments or part or all of the steps of different embodiments can be combined arbitrarily, an embodiment can be combined with the optional implementation manners of other embodiments.

[0115] In the embodiments of the present disclosure, the terms and / or descriptions between the embodiments are consistent and can be referred to each other if there is no special description and logical conflict, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0116] The terms used in the embodiments of the present disclosure are only for the purpose of describing the specific embodiments, and not as a limitation on the present disclosure.

[0117] In the embodiments of the present disclosure, unless otherwise specified and logically contradictory, the elements expressed in singular form, such as "one", "one", "the", "the above", "the", "the above", "this" and the like, can represent "one and only one", and can also represent "one or more", "at least one" and the like. For example, in the case of using articles such as "a", "an", "the" and the like in English, the noun after the article can be understood as singular expression, and can also be understood as plural expression.

[0118] In the embodiments of the present disclosure, "plurality" means two or more.

[0119] In some embodiments, the terms "at least one of", "one or more", "a plurality of", "multiple" and the like can be replaced with each other.

[0120] In some embodiments, "at least one of A, B", "A and / or B", "in one case A, in another case B", "responsive to case A, responsive to case B" and the like, can be interpreted to include both cases, A and B, in some embodiments, A (A is performed regardless of B), in some embodiments, B (B is performed regardless of A), in some embodiments, selected from the group consisting of A and B (the selection between A and B is an option), in some embodiments, A and B (both A and B are performed).

[0121] In some embodiments, "A or B" and the like, can be interpreted to include both cases, A and B, in some embodiments, A (A is performed regardless of B), in some embodiments, B (B is performed regardless of A), in some embodiments, selected from the group consisting of A and B (the selection between A and B is an option).

[0122] In some embodiments, the prefix words "first", "second", and the like, are used only to distinguish different description objects, and do not limit the position, order, priority, quantity, or content of the description objects, and the description objects are described in the claims or embodiments according to the context, and should not be construed as redundant limitations because of the use of prefix words. For example, the description object is "field", and the ordinal words before "field" in "first field" and "second field" do not limit the position or order between "fields", and "first" and "second" do not limit whether the "fields" modified by them are in the same message or not, nor limit the order of "first field" and "second field". For another example, the description object is "level", and the ordinal words before "level" in "first level" and "second level" do not limit the priority between "levels". For another example, the quantity of the description object is not limited by the ordinal words, and can be one or more, for example, "first device", where the quantity of "device" can be one or more. In addition, the objects modified by different prefix words can be the same or different, for example, the description object is "device", 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 object is "information", and "first information" and "second information" can be the same information or different information, and their contents can be the same or different.

[0123] In some embodiments, "including A", "containing A", "for indicating A", "carrying A", can be interpreted as directly carrying A, or indirectly indicating A.

[0124] 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.

[0125] 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", "fewer than", "fewer 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.

[0126] In some embodiments, the apparatuses and devices can be interpreted as physical or virtual, and their 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", and the like.

[0127] In some embodiments, "network" can be interpreted as an apparatus included in the network, such as an access network device, a core network device, and the like.

[0128] In some embodiments, an “access network device (AN device)” can also be referred to as a “radio access network device (RAN device),” a “base station (BS),” a “radio base station,” a “fixed station,” and in some embodiments can also be understood as a “node,” an “access point,” a “transmission point (TP),” a “reception point (RP),” a “transmission / reception point (TRP),” a “panel,” an “antenna panel,” an “antenna array,” a “cell,” a “macro cell,” a “small cell,” a “femto cell,” a “pico cell,” a “sector,” a “cell group,” a “serving cell,” a “carrier,” a “component carrier,” a “bandwidth part (BWP),” and the like.

[0129] In some embodiments, a "terminal" or "terminal device" can be referred to as a "user equipment" (UE), a "user terminal," a "mobile station" (MS), a "mobile terminal" (MT), a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, and / or the like.

[0130] In some embodiments, data, information and / or the like can be obtained in compliance with laws and regulations of a country in which a location is situated.

[0131] In some embodiments, data, information and / or the like can be obtained after consent of a user is obtained.

[0132] In addition, each element, each row, or each column in a table of embodiments of the present disclosure can be implemented as an independent embodiment, and a combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0133] FIG. 1A is an architecture diagram of a communication system, according to an embodiment of the present disclosure. As shown in FIG. 1A, the communication system 100 includes a terminal 101 and a network device 102.

[0134] In some embodiments, the terminal 101 includes at least one of a mobile phone, a wearable device, an Internet of Things device, a communication-capable automobile, a smart automobile, a tablet (Pad), a wireless transceiver-equipped computer, 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, or the like, but is not limited thereto.

[0135] In some embodiments, the network device 102 is at least one of an evolved NodeB (eNB) in a 5G communication system, a next generation eNB (ng-eNB), a next generation NodeB (gNB), 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 RAN, a Cloud RAN, a base station in another communication system, an access node in a Wi-Fi system, or the like, but is not limited thereto.

[0136] In some embodiments, the technical solutions of the present disclosure can be applied to an Open RAN architecture, in which case, the interfaces between or within the access 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 implemented through software or programs.

[0137] In some embodiments, the access network device can be composed of a central unit (CU) and a distributed unit (DU), where the CU can also be referred to as a control unit. The CU-DU structure can split the protocol layers of the access network device, with some protocol layer functions being centrally controlled by the CU and the remaining protocol layer functions being distributed in the DUs, which are centrally controlled by the CU, but the present disclosure is not limited thereto.

[0138] 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, as the system architecture evolves and new service scenarios appear, the technical solutions proposed in the embodiments of the present disclosure are also applicable to similar technical problems.

[0139] The following embodiments of the present disclosure can be applied to the communication system 100 shown in FIG. 1 or part of the subjects, but are not limited thereto. The subjects shown in FIG. 1 are exemplary, and the communication system can include all or part of the subjects in FIG. 1, or other subjects other than FIG. 1. The number and form of each subject is arbitrary, each subject can be real or virtual, the connection relationship between each subject is exemplary, 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.

[0140] Embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 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)), Public Land Mobile Network (PLMN) network, Device-to-Device (D2D) system, Machine to Machine (M2M) system, Internet of Things (IoT) system, Vehicle-to-Everything (V2X), system using other communication methods, next-generation system expanded based thereon, and the like. Further, a plurality of systems can be applied in combination (for example, combination of LTE or LTE-A and 5G, and the like).

[0141] In some embodiments, the width of the beam is related to the size of the antenna array and the frequency, i.e. the higher the frequency, the narrower the beam, and the larger the antenna array, the narrower the beam. This results in the beam of high-frequency large-scale MIMO being extremely narrow, so when covering the same cell, the high-frequency large-scale MIMO system needs more beams than the NR (New Radio) system, and because the high-frequency electromagnetic wave has poor reflection and diffraction ability, the propagation path of the high-frequency electromagnetic wave can be equivalent to the Los (Line of Sight) path.

[0142] FIG. 1B is a schematic diagram illustrating a beam squint, according to an embodiment of the present disclosure. As shown in FIG. 1B, in a high-frequency system, the bandwidth is generally large, and because the wavelengths of different subcarriers are greatly different, the beam squint phenomenon occurs under the action of the same analog beamforming vector, i.e. the beam deviates from the aiming line and spreads to other directions like the dispersion of light, and the angle of deviation of the beam from the aiming line changes with the change of the signal frequency. This phenomenon causes the loss of the gain of the transmitting antenna array, and changes the original narrow beam into a wide beam related to the subcarrier.

[0143] In some embodiments, for the beam squint phenomenon, on the one hand, the beam squint may cause the loss of the array gain, and research shows that a layer of TTD (true-time-delay) or DPP (delay-phase-precoding) network can be added before the phase shifter of the antenna array, and the array gain loss caused by the beam squint can be compensated by designing the TTD or DPP parameters. On the other hand, the beam squint expands the width of the single analog beam, and changes it from a narrow beam to a wide beam. Based on this, the gNB (the next Generation Node B) can cover more users at the same time, and by designing the TTD or DPP parameters, the direction of the beam offset of different subcarriers can be controlled, so that the beam is aligned with the direction of the target user.

[0144] FIG. 1C is a schematic diagram of a radio frequency link according to an embodiment of the present disclosure, FIG. 1D is a schematic diagram of a beam behavior mode 1 according to an embodiment of the present disclosure, and FIG. 1E is a schematic diagram of a beam behavior mode 2 according to an embodiment of the present disclosure. Referring to FIGS. 1C, 1D, and 1E, by designing the values of the respective delay elements, the beam behavior 1 in FIG. 1D and the beam behavior 2 in FIG. 1E can be achieved. The beam behavior 1 means that the beams corresponding to different subcarriers cover a continuous angle range, and the beam behavior 2 means that the beam directions corresponding to different subcarriers are independent and irrelevant. The simulation effect diagram is shown in FIG. 1F. In FIG. 1C, t 1～N denotes the value of the delay element, denotes the phase value, and 1-M denotes the antenna.

[0145] In some embodiments, as the array size and the communication frequency increase, the beam becomes narrower and narrower, and more beams are needed to cover the same area. Therefore, more SSB (Synchronization Signal / PBCH Block) beams are needed to cover the entire cell in the initial access stage. Considering the above-mentioned TTD-based technology, multiple analog beams can be transmitted simultaneously, thereby shortening the time of beam scanning in the initial access process. However, only one SSB beam is supported to be transmitted simultaneously at present, which corresponds to one SSB index, meaning that the SSB index is associated with only one beam. However, two analog beams are transmitted simultaneously by using the TTD technology, meaning that one SSB index needs to be associated with two analog beams. Therefore, the base station needs to perform frequency domain indication on the transmitted SSB beam, so as to facilitate the terminal to distinguish the multiple analog beams under the same SSB beam when performing beam indication based on the TTD technology.

[0146] FIG. 2A is an interaction schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 2A, the present disclosure relates to a communication method, and the method comprises the following steps:

[0147] In step S2101, the network device 102 sends first information to the terminal 101.

[0148] In some embodiments, the present embodiment is applicable to a MIMO scenario, and a network device designs a TTD or DPP parameter based on the above TTD or DPP network to compensate for the array gain loss caused by beam squint, controls the direction of different subcarrier velocity offsets through the TTD parameter or the DPP parameter, and aligns the beams to the target user direction. Through the TTD technology, simultaneous propagation of multiple analog beams corresponding to one SSB beam is realized to shorten the time of beam scanning in the initial access process of a terminal. In the present embodiment, a network device sends one or more analog beams corresponding to one SSB beam to a terminal based on the TTD technology, and indicates the frequency domain position information of the one or more analog beams based on first information.

[0149] The SSB beam is used to provide a time synchronization reference for the terminal, help the terminal maintain time synchronization with the network device, and calibrate the receiving frequency in the terminal based on the frequency calibration information of the SSB beam to ensure the accuracy of signal reception in the terminal. In the initial access process of the terminal, the terminal needs to perform cell search based on the SSB beam sent by the network device to determine the random access resource in the random access process and the cell accessible by the current terminal. The terminal scans the SSB beam based on the received first information, and when a target SSB beam whose beam measurement result is greater than a set threshold is scanned, sends random access information to the network device based on the random access resource corresponding to the target SSB beam.

[0150] In some embodiments, the first information includes frequency domain information of the SSB beam.

[0151] For example, the frequency domain information can be frequency domain index information of the SSB beam, and can also be frequency domain position information of the SSB beam. The SSB beam can include one or more SSB beams, and when the network device sends multiple SSB beams to the terminal, the frequency domain positions of the multiple SSB beams need to be indicated respectively based on the frequency domain information in the first information. For example, the first information includes multiple frequency domain index information corresponding to multiple SSB beams, the frequency domain index information corresponding to each SSB beam is different, and the network device indicates the frequency domain positions of the multiple SSB beams sent respectively based on different frequency domain index information.

[0152] In some embodiments, the first information is used to indicate the frequency domain information of one or more SSB beams sent by the network device, where the frequency domain information can be frequency domain index information of the SSB beam, and can also be frequency domain position information of the SSB beam.

[0153] In some embodiments, the first information can also be used to indicate the frequency domain position information of the SSB beam.

[0154] In some embodiments, the name of the first information is not limited, which is, for example, "index information", "position information", "frequency domain position information", "SSB beam position indication information", and the like.

[0155] In some embodiments, the frequency domain information includes frequency domain index information of the SSB beam.

[0156] For example, the first information is frequency domain index information of the SSB beam, and the network device indicates the frequency domain position of the SSB beam through the first information. Based on the frequency domain index, the network device can accurately indicate the frequency domain resource of the terminal receiving signal, thereby improving the accuracy of SSB beamforming. Through dynamic allocation of SSB beam resources based on the frequency domain index, the resource utilization of the communication system is improved, thereby reducing the interference between different beams and improving the clarity and communication quality of the SSB beam. Based on the frequency domain index information, the SSB beam is indicated, thereby reducing the energy consumption of beam searching and switching in the terminal.

[0157] In some embodiments, the frequency domain index information includes subcarrier index information and / or subband index information.

[0158] For example, the network device indicates the frequency domain information of the SSB beam through the frequency domain index information, which can be subcarrier index information or subband index information. The subcarrier is a basic frequency unit in the OFDM (Orthogonal Frequency Division Multiplexing) system, and the position information of the SSB beam in the frequency domain can be accurately indicated through the subcarrier index. There is a one-to-one correspondence between the subband index and the SSB beam, so the frequency domain position information of the SSB beam can be indicated based on the subband index on the SSB beam.

[0159] The frequency domain index information can also be subcarrier index information and subband width index information. For example, if the network device sends multiple SSB beams to the terminal, based on the above TTD technology, the multiple SSB beams are multiple analog beams in different directions corresponding to one SSB beam. The network device can use different frequency domain information indication methods to indicate the multiple analog beams. Based on a first analog beam, the frequency domain position of the first analog beam can be indicated by indicating the subcarrier index. Based on a second analog beam, the frequency domain position of the second analog beam can be indicated by subband width index information. The corresponding frequency domain index information includes subcarrier index information and subband width index information.

[0160] In some embodiments, the frequency domain index information includes subband index information, and the subband index information includes bit information.

[0161] In some embodiments, the bit information is used to indicate the frequency domain subband index of the SSB beam.

[0162] For example, the first information is frequency domain index information, and an index type of the frequency domain index information is a sub-band index, which is used to indicate different SSB beams. In this embodiment, a bit information bit is added to the SSB index, and different sub-band index is indicated based on the number of bits in the bit information bit. For example, for the case of associating two analog beams with one SSB beam, the first information is used to indicate the frequency domain information of the two analog beams, and one bit information bit is added to the high / low bit of the SSB index corresponding to the SSB beam. Different sub-band index corresponding to different analog beams is indicated based on different bit numbers in the bit information bit. When the bit information number in the bit information bit is 1, it is determined that the SSB beam indicated by the current SSB index is the beam corresponding to sub-band 1. When the bit information number in the bit information bit is 0, it is determined that the SSB beam indicated by the current SSB index is the beam corresponding to sub-band 2.

[0163] The number of bits corresponding to the bit information bit added to the SSB index is related to the number of analog beams corresponding to the SSB beam. If one SSB beam is associated with two analog beams, one bit information bit is added to the SSB index. If one SSB beam is associated with four analog beams, two bit information bits are added to the SSB index. If one SSB beam is associated with two analog beams, N bit information bits are added to the SSB index. N

[0164] In some embodiments, the first information is carried by the MIB.

[0165] For example, the MIB is sent to the terminal through the broadcast channel, so that the terminal can quickly obtain the key system information without decoding any other control signaling. The network device carries the first information through the MIB, provides the frequency domain information of the SSB beam to the terminal based on the MIB, and can help the terminal quickly determine the access point. The terminal implements signal synchronization in the time and frequency domains based on the information in the MIB, reduces the time of searching for effective signals of the terminal, and improves the response efficiency in the communication system.

[0166] In some embodiments, the network device sends multiple SSB beams to the terminal, and the frequency domain information indicated in the first information is multiple frequency domain index information of the multiple SSB beams, wherein the SSB indexes of the multiple SSB beams are the same.

[0167] ​In an example, the first information is carried by the MIB in the embodiment, when the network device indicates multiple SSB beams, a frequency domain information indication field is added in the MIB information field on the basis, the indication field indicates the frequency domain information of each SSB beam separately, wherein the indication field indicates different SSB beams based on different frequency domain index information only when the network device simultaneously transmits multiple SSB beams and the multiple SSB beams correspond to the same SSB index.

[0168] In some embodiments, the frequency domain information includes a DMRS sequence of the SSB beam.

[0169] In an example, the network device uses different DMRS sequences to indicate the frequency domain information of the SSB beam, thereby indicating different SSB beams. According to 38.211, the DMRS sequence of the SSB beam is generated by two pseudo-random sequences, wherein the first pseudo-random sequence is initialized by a fixed sequence, and the second pseudo-random sequence is initialized by a positive integer C init , wherein C init may be calculated by the following formula 1:

[0170] wherein, is the initialization sequence corresponding to the SSB beam, is the cell ID information. There are multiple possible values, and the terminal can determine the DMRS used by the PBCH (Physical Broadcast Channel) in the initial cell search by blind detection, so the initialization sequence C init may be grouped based on C , and different sequence groups correspond to different frequency domain indexes of the SSB beam. For example, for the case of associating two analog beams with one SSB beam, C init needs to be divided into two groups, and the following and

[0171] wherein, is the initialization sequence corresponding to the first SSB beam, is the initialization sequence corresponding to the second SSB beam.

[0172] In some embodiments, the terminal receives the first information sent by the network device.

[0173] In step S2102, the terminal determines the target SSB beam from the SSB beam according to the first information.

[0174] In an example, the terminal determines, according to the first information, frequency domain information of the SSB beam, the frequency domain information being used to indicate a frequency domain location of the SSB beam, and the terminal performs scanning on the SSB beam at the corresponding frequency domain location according to the first information, and generates a measurement result of the SSB beam. When the measurement result is greater than a set threshold, the terminal determines that the SSB beam corresponding to the current frequency domain location is a target beam, and initiates a random access procedure to the network device based on the target SSB beam.

[0175] In some embodiments, the step S2102 includes:

[0176] The terminal determines, according to the number of bits on the bit information bit, the frequency domain location information corresponding to the SSB beam based on a set mapping relationship.

[0177] The terminal determines, according to the frequency domain location information, the target SSB beam from the SSB beam

[0178] In an example, the first information in this embodiment is frequency domain index information, and the index type corresponding to the frequency domain index information is a sub-band index. The terminal is configured with a set mapping relationship, and the set mapping relationship is used to indicate a one-to-one correspondence between a plurality of sub-band index information and a number of bits of bit information on a plurality of bit information bits. For example, the network device indicates that the SSB beam is two analog beams associated with one SSB beam, and the sub-band index information includes one bit information bit. It can be set that when the number of bits on the bit information bit is 1, the sub-band index of the first analog beam is indicated, and when the number of bits on the bit information bit is 0, the sub-band index of the second analog beam is indicated. When the network device indicates that the SSB beam is four analog beams associated with one SSB beam, the sub-band index information includes two bit information bits. It can be set that the set mapping relationship configured in the terminal is that the bit information is 00, the sub-band index of the first analog beam is corresponded, the bit information is 01, the sub-band index of the second analog beam is corresponded, the bit information is 11, the sub-band index of the third analog beam is corresponded, and the bit information is 10, the sub-band index of the fourth analog beam is corresponded. The number of bits of the bit information bit and the mapping relationship between different bit numbers and the sub-band index of the SSB beam in this embodiment are not limited, and the position of the bit information bit and the bit number can be set based on the actual network environment.

[0179] The terminal determines, according to the number of bits on the bit information bit, the sub-band index of the SSB beam by referring to the set mapping relationship, determines the frequency domain location information corresponding to the SSB beam based on the sub-band index, performs scanning on the SSB beam based on the frequency domain location information, obtains a measurement result of the SSB beam, and determines that the corresponding SSB beam is a target SSB beam when the measurement result is greater than a set threshold.

[0180] In step S2103, the terminal determines a random access resource of the terminal according to the target SSB beam.

[0181] In an example, the terminal determines, according to the target SSB beam, an access resource corresponding to the target SSB beam as a random access resource for initiating a random access procedure by the terminal.

[0182] In some embodiments, the random access resource includes an RO and / or a set of RA preambles.

[0183] In some embodiments, the frequency information includes a plurality of frequency domain index information of the SSB beam, the random access resource includes an RO and a set of RA preambles, and the step S2103 includes:

[0184] The terminal determines that the ROs associated with the plurality of frequency domain index information are the same.

[0185] The terminal determines, according to the target frequency domain index information of the target SSB beam, target frequency domain position information of the target SSB beam.

[0186] The terminal determines, according to the target frequency domain position information, a target RA corresponding to a target RO as the random access resource.

[0187] In an example, the network device sends a plurality of SSB beams in the embodiment, and the corresponding frequency domain information includes a plurality of frequency domain index information corresponding to the plurality of SSB beams. If it is determined that the ROs associated with the plurality of frequency domain index information are the same, a target RA preamble corresponding to the target SSB beam on the same RO is determined as the random access resource of the terminal according to the target frequency domain index of the target SSB beam.

[0188] FIG. 2B is a schematic diagram of a random access resource according to an embodiment of the present disclosure. As shown in FIG. 2B, the network device sends two analog beams associated with one SSB beam to the terminal, two analog beams are associated with the same SSB index, the frequency domain index corresponding to the two analog beams is indicated in the first information, the ROs associated with different frequency domain indexes are the same, the first sub-band and the second sub-band are both associated with RO#1, the two analog beams are scanned based on the frequency domain index, it is determined that the first analog beam corresponding to the first sub-band is the target SSB beam, and then the terminal calls the random access resource on the RA preamble set of RO#1 to send random access information to the network device.

[0189] In some embodiments, the frequency domain information includes a plurality of frequency domain index information of the SSB beam, and the random access resource includes an RO. The step S2103 includes:

[0190] The terminal determines that the ROs associated with the plurality of frequency domain index information are different.

[0191] The terminal determines, according to the target frequency domain index information of the target SSB beam, target frequency domain position information of the target SSB beam.

[0192] The terminal determines the corresponding target RO as the random access resource according to the target frequency domain position information.

[0193] In an example, the SSB beam sent by the network device in the embodiment includes multiple SSB beams, and the corresponding frequency domain information includes multiple frequency domain index information corresponding to the multiple SSB beams. If it is determined that the ROs associated with the multiple frequency domain index information are different, the target frequency domain position of the target SSB beam is determined according to the target frequency domain index of the target SSB beam, and the RA set on the target RO is determined for sending the random access information according to the target frequency domain position.

[0194] FIG. 2C is a schematic diagram of a random access resource according to an embodiment of the present disclosure. As shown in FIG. 2C, the network device sends two analog beams associated on one SSB beam to the terminal, two analog beams are associated on the same SSB index, the frequency domain index corresponding to the two analog beams is indicated in the first information, and the ROs associated with different frequency domain indexes are different, wherein the first sub-band is associated with RO#1, and the second sub-band is associated with RO#2. The two analog beams are scanned based on the frequency domain index, it is determined that the first analog beam corresponding to the first sub-band is the target SSB beam, and then the terminal calls the random access resource on the RA preamble set of RO#1 to send the random access information to the network device.

[0195] In step S2104, the terminal sends the random access information to the network device based on the random access resource.

[0196] In an example, after the target SSB beam corresponding random access resource is determined through the above steps, the terminal sends the random access information to the network device based on the random access resource, and performs random access.

[0197] 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”, “domain”, “field”, “symbol”, “codebook”, “codeword”, “codepoint”, “bit”, “data”, “program”, “chip”, and the like can be replaced with each other.

[0198] In some embodiments, the terms “codebook”, “codeword”, “precoding matrix”, and the like can be replaced by each other. For example, a codebook can be a collection of one or more codewords / precoding matrices.

[0199] In some embodiments, the terms “uplink”, “uplink”, “physical uplink”, and the like can be replaced by each other, the terms “downlink”, “downlink”, “physical downlink”, and the like can be replaced by each other, and the terms “side”, “sidelink”, “sidelink communication”, “sidelink communication”, “direct connection”, “direct connection link”, “direct connection communication”, “direct connection link communication”, and the like can be replaced by each other.

[0200] In some embodiments, the terms “downlink control information (DCI)”, “downlink (DL) assignment”, “DL DCI”, “uplink (UL) grant”, “UL DCI”, and the like can be replaced by each other.

[0201] In some embodiments, the terms “physical downlink shared channel (PDSCH)”, “DL data”, and the like can be replaced by each other, and the terms “physical uplink shared channel (PUSCH)”, “UL data”, and the like can be replaced by each other.

[0202] In some embodiments, the terms “radio”, “wireless”, “radio access network (RAN)”, “access network (AN)”, “RAN-based”, and the like can be replaced by each other.

[0203] In some embodiments, the terms “search space”, “search space set”, “search space configuration”, “search space set configuration”, “control resource set (CORESET)”, “CORESET configuration”, and the like can be replaced by each other.

[0204] In some embodiments, the terms “synchronization signal (SS),” “synchronization signal block (SSB),” “reference signal (RS),” “pilot,” “pilot signal,” and the like can be used interchangeably.

[0205] In some embodiments, the terms “moment in time,” “point in time,” “time,” “time position,” and the like can be used interchangeably, and the terms “time duration,” “time period,” “time window,” “window,” “time,” and the like can be used interchangeably.

[0206] In some embodiments, the terms “component carrier (CC),” “cell,” “frequency carrier,” “carrier frequency,” and the like can be used interchangeably.

[0207] In some embodiments, the terms “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 used interchangeably.

[0208] In some embodiments, the terms “wireless access scheme,” “waveform,” and the like can be used interchangeably.

[0209] In some embodiments, the terms “precoding”, “precoder”, “weight”, “precoding weight”, “quasi-co-location (QCL)”, “transmission configuration indication (TCI) state”, “spatial relation”, “spatial domain filter”, “transmission power”, “phase rotation”, “antenna port”, “antenna port group”, “layer”, “the number of layers”, “rank”, “resource”, “resource set”, “resource group”, “beam”, “beam width”, “beam angular degree”, “antenna”, “antenna element”, “panel”, and the like can be replaced with each other.

[0210] In some embodiments, the terms “frame”, “radio frame”, “subframe”, “slot”, “sub-slot”, “mini-slot”, “symbol”, “symbol”, “transmission time interval (TTI)”, and the like can be replaced with each other.

[0211] In some embodiments, the terms “acquire”, “obtain”, “get”, “receive”, “transmit”, “bidirectional transmission”, “transmit and / or receive”, and the like can be replaced with each other, which can be interpreted as receiving from other subjects, acquiring from protocols, acquiring from higher layers, obtaining by oneself, implementing autonomously, and the like.

[0212] In some embodiments, the terms “transmit”, “emit”, “report”, “issue”, “transmit”, “bidirectional transmission”, “transmit and / or receive”, and the like can be replaced with each other.

[0213] In some embodiments, the terms "certain", "preset", "pre-set", "set", "indicated", "a certain", "any", "first", and the like can be replaced with each other, and "certain A", "preset A", "pre-set A", "set A", "indicated A", "a certain A", "any A", "first A" can be interpreted as A predetermined in a protocol or the like, or A obtained by setting, configuration, or indication, or a certain A, a certain A, any A, or first A, but are not limited thereto.

[0214] In some embodiments, the determination or judgment can be performed 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.

[0215] The communication method related to the embodiments of the present disclosure can include at least one of steps S2101-S2104. For example, step S2101 can be implemented as an independent embodiment, step S2102 can be implemented as an independent embodiment, steps S2102, S2103, S2104 can be implemented as independent embodiments, but are not limited thereto.

[0216] In some embodiments, the order of any two steps in steps S2101-S2104 can be exchanged or executed simultaneously. For example, steps S2102 and S2103 can be exchanged or executed simultaneously.

[0217] In some embodiments, steps S2102-S2104 are optional, and one or more of these steps can be omitted or replaced in different embodiments.

[0218] In some embodiments, steps S2101, S2102-S2104 are optional, and one or more of these steps can be omitted or replaced in different embodiments.

[0219] In some embodiments, step S2104 is optional.

[0220] In some embodiments, other optional implementations described before or after the corresponding description of FIG. 2A can be referred to.

[0221] FIG. 3 is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 3, the embodiments of the present disclosure relate to a communication method performed by a terminal, and the above method includes:

[0222] In step S3101, the first information sent by the network device is received.

[0223] In some embodiments, the first information comprises frequency domain information of a synchronization signal block (SSB) beam.

[0224] 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 involved in FIG. 2A, which will not be repeated here.

[0225] In some embodiments, the frequency domain information comprises frequency domain index information of the SSB beam.

[0226] In some embodiments, the frequency domain index information comprises subcarrier index information and / or subband index information.

[0227] In some embodiments, the frequency domain index information comprises subband index information, and the subband index information comprises bit information bits, where the bit information bits are used to indicate the frequency domain subband index of the SSB beam.

[0228] In step S3102, a target SSB beam is determined from the SSB beams according to the first information.

[0229] 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 involved in FIG. 2A, which will not be repeated here.

[0230] In some embodiments, the terminal comprises a set mapping relationship, and the set mapping relationship is used to indicate a one-to-one correspondence between a plurality of subband index information and a plurality of bit numbers on the bit information bits. The step S3102 comprises:

[0231] According to the number of bits on the bit information bits, the frequency domain position information corresponding to the SSB beam is determined based on the set mapping relationship.

[0232] According to the frequency domain position information, the target SSB beam is determined from the SSB beams.

[0233] The SSB beam comprises a plurality of SSB beams, and the frequency domain information comprises a plurality of frequency domain index information of the plurality of SSB beams, where the SSB indexes of the plurality of SSB beams are the same.

[0234] In some embodiments, the first information is carried through a management information block (MIB).

[0235] In some embodiments, the frequency domain information comprises a demodulation reference signal (DMRS) sequence of the SSB beam.

[0236] In some embodiments, the random access resource comprises a random access resource block (RO) and / or a random access (RA) preamble set.

[0237] In step S3103, a random access resource of the terminal is determined according to the target SSB beam.

[0238] 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 involved in FIG. 2A, which will not be repeated here.

[0239] In some embodiments, the frequency information includes multiple frequency domain index information of the SSB beam, and the random access resource includes an RO. In step S3103, the following steps are included:

[0240] It is determined that the ROs associated with the multiple frequency domain index information are different.

[0241] Target frequency domain position information of the target SSB beam is determined according to target frequency domain index information of the target SSB beam.

[0242] According to the target frequency domain position information, a corresponding target RO is determined as the random access resource.

[0243] In some embodiments, the frequency information includes multiple frequency domain index information of the SSB beam, and the random access resource includes an RO and a set of RA preambles. In step S3103, the following steps are included:

[0244] It is determined that the ROs associated with the multiple frequency domain index information are the same.

[0245] Target frequency domain position information of the target SSB beam is determined according to target frequency domain index information of the target SSB beam.

[0246] According to the target frequency domain position information, a target RA of the corresponding target RO is determined as the random access resource.

[0247] In step S3104, random access information is sent to the network device based on the random access resource.

[0248] 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 involved in FIG. 2A, which will not be repeated here.

[0249] The communication method involved in the embodiments of the present disclosure can include at least one of steps S3101-S3104. For example, step S3101 can be implemented as an independent embodiment, step S3102 can be implemented as an independent embodiment, and steps S3102, S3103, and S3104 can be implemented as independent embodiments, but are not limited thereto.

[0250] In some embodiments, the order of any two of steps S3101-S3104 can be exchanged or performed simultaneously. For example, step S3102 and step S3103 can be exchanged or performed simultaneously.

[0251] In some embodiments, steps S3102-S3104 are optional, and one or more of these steps can be omitted or replaced in different embodiments.

[0252] In some embodiments, steps S3101, S3102-S3104 are optional, and one or more of these steps can be omitted or replaced in different embodiments.

[0253] In some embodiments, step S3104 is optional.

[0254] In some embodiments, other optional implementations can be found before or after the description corresponding to FIG. 3.

[0255] FIG. 4 is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 4, the embodiment of the present disclosure relates to a communication method, which is performed by a network device, and the above method comprises:

[0256] Step S4101: transmitting first information to a terminal.

[0257] In some embodiments, the first information includes frequency domain information of the SSB beam, and the first information is used to instruct the terminal to determine a random access resource according to the first information.

[0258] Optional implementations of step S4101 can be found in the optional implementations of step S2101 of FIG. 2A and other related parts in the embodiments related to FIG. 2A, which will not be repeated here.

[0259] In some embodiments, the frequency domain information includes frequency domain index information of the SSB beam.

[0260] In some embodiments, the frequency domain index information includes subcarrier index information and / or subband index information.

[0261] In some embodiments, the frequency domain index information includes subband index information, and the subband index information includes bit information, wherein the bit information is used to indicate the frequency domain subband index of the SSB beam.

[0262] In some embodiments, the SSB beam includes a plurality of SSB beams, and the frequency domain information includes a plurality of frequency domain index information of the plurality of SSB beams, wherein the SSB indexes of the plurality of SSB beams are the same.

[0263] In some embodiments, the first information is carried by the MIB.

[0264] In some embodiments, the frequency domain information comprises a DMRS sequence of the SSB beam.

[0265] Step S4102: receiving, by the receiving terminal, random access information sent by the terminal based on the random access resource.

[0266] The optional implementation of step S4102 can refer to the optional implementation of step S2104 in FIG. 2A and other associated parts in the embodiments involved in FIG. 2A, which will not be repeated here.

[0267] The communication method involved in the embodiments of the present disclosure can comprise at least one of steps S4101-S4102. For example, step S4101 can be implemented as an independent embodiment, and step S4102 can be implemented as an independent embodiment, but is not limited thereto.

[0268] In some embodiments, the order between any two steps of steps S4101-S4102 can be exchanged or executed simultaneously.

[0269] In some embodiments, step S4102 is optional, and one or more of these steps can be omitted or replaced in different embodiments.

[0270] In some embodiments, other optional implementations can be recorded before or after the description of FIG. 4.

[0271] FIG. 5A is a schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 5A, the embodiments of the present disclosure involve a communication method performed by a network device, and the above method comprises:

[0272] Step S5101: sending, by the network device, an SSB to a terminal, wherein the SSB comprises first information.

[0273] In some embodiments, the first information is index information or position information related to the frequency domain.

[0274] In some embodiments, the frequency domain information can be a subcarrier index or a subband index.

[0275] Example 1: Indicate the frequency domain information in MIB. Example 1: Add K bits based on the SSB index indication domain, which is used to indicate the sub-band index. For example, for the case of associating two analog beams with one SSB, add 1 bit of information to the high / low bit of the SSB index. When the information bit is 1, it means that the current SSB beam is the beam corresponding to sub-band 1, and when the information is 0, it means that the current SSB beam is the beam corresponding to sub-band 2. Example 2: Add a frequency domain information indication field based on the existing MIB information field, which separately indicates the frequency domain information. Where the indication field exists only when the base station transmits multiple SSB beams at the same time and the SSB indexes corresponding to the multiple SSB beams are the same.

[0276] Example 2: Use different DMRS sequences to indicate frequency domain information, thereby indicating different SSB beams. According to 38.211, the DMRS sequence of an SSB beam is generated by two pseudo-random sequences, where the first pseudo-random sequence is initialized by a fixed sequence, and the second pseudo-random sequence is initialized by a positive integer C init , where C init can be calculated by the following formula 1:

[0277] wherein, is the initialization sequence corresponding to the SSB beam, is the cell ID information. There are many possible values, and the terminal can determine the DMRS used by the PBCH (Physical Broadcast Channel) in the initial cell search by blind detection, so it can be based on C init Group the initialization sequences , different sequence groups correspond to different frequency domain indexes of SSB beams. For example, for the case of associating two analog beams with one SSB, C init needs to be divided into two groups, as follows and

[0278] wherein, is the initialization sequence corresponding to the first SSB beam, is the initialization sequence corresponding to the second SSB beam In some embodiments, the terminal receives first information sent by the network device.

[0279] By the above manner, the terminal determines the frequency domain positions of different SSB beams based on the frequency domain information, detects the SSB beams based on the frequency domain positions, and determines the random access resource of the terminal, thereby improving the accuracy of the random access process in the communication system and guaranteeing the communication performance.

[0280] FIG. 5B is a schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 5B, the embodiment of the present disclosure relates to a communication method, which is performed by a terminal, and the above method includes:

[0281] In step S5201, the terminal receives the SSB sent by the network device, obtains the index value of the SSB, and determines the frequency domain position information corresponding to the reference signal based on the index value or other information.

[0282] In step S5202, the terminal determines the corresponding random access RO and / or RA preamble set according to the determined frequency domain position of the reference signal.

[0283] For example, two analog beams are associated with each SSB index, and different beams correspond to different frequency domain positions. Therefore, the correspondence between the frequency domain position index and the RO and / or RA preamble set can refer to the above FIG. 2B and FIG. 2C, and will not be described here. Example 1: The random access RO associated with different frequency domain indexes is the same, but the preamble set corresponding to different frequency domain indexes is different. For example, the first sub-band corresponds to the first 32 preambles of the RO, and the second sub-band corresponds to the last 32 preambles of the RO. Example 2: The random access RO associated with different frequency domain indexes is different, for example, the first sub-band is associated with RO#1, and the second sub-band is associated with RO#2.

[0284] In step S5203, the terminal sends the random access information according to the determined RO and / or RA preamble set.

[0285] By the above manner, the terminal determines the frequency domain positions of different SSB beams based on the frequency domain information, detects the SSB beams based on the frequency domain positions, and determines the random access resource of the terminal, thereby improving the accuracy of the random access process in the communication system and guaranteeing the communication performance.

[0286] The embodiments of the present disclosure also propose a device for implementing any of the above methods, for example, a device is proposed, which includes 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, which includes units or modules for implementing each step performed by the network device (such as an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0287] It should be understood that the division of each unit or module in the above apparatus is only a logical function division, and all or part of them can be integrated into a physical entity or physically separated in actual implementation. In addition, the units or modules in the apparatus can be implemented in the form of processor calling software: for example, the apparatus 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 realize the functions of each unit or module of the above apparatus, wherein the processor is, for example, a general processor such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the apparatus or a memory outside the apparatus. Alternatively, the units or modules in the apparatus can be implemented in the form of hardware circuit, and the functions of part or all of the units or modules can be realized by the design of the hardware circuit. The above hardware circuit can be understood as one or more processors; for example, in one implementation, the above hardware circuit is an application-specific integrated circuit (ASIC), and the functions of part or all of the above units or modules are realized by the design of the logical relationship of the elements in the circuit; for example, in another implementation, the above 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 realize the functions of part or all of the above units or modules. All units or modules of the above apparatus 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 are implemented in the form of processor calling software, and the remaining part is implemented in the form of hardware circuit.

[0288] In 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), or the like. In another implementation, the processor can implement certain functions through a logical relationship of hardware circuit. The logical relationship of the hardware circuit is fixed or reconfigurable. 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 part or all of the units or modules described above. 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), or the like.

[0289] FIG. 6 is a structural schematic diagram of a terminal according to embodiments of the present disclosure. As shown in FIG. 6, the terminal 6100 can include a transceiver module 6101, a processing module 6102, and a processing module 6103. In some embodiments, the transceiver module 6101 is configured to receive first information sent by a network device, the first information including frequency domain information of a synchronization signal block (SSB) beam, the processing module 6102 is configured to determine a target SSB beam from the SSB beam according to the first information, and the processing module 6103 is configured to determine a random access resource of the terminal according to the target SSB beam. Optionally, the transceiver module 6101, the processing module 6102, and the processing module 6103 are configured to perform at least one of the determining, obtaining, and / or the like communication steps performed by the terminal 101 in any of the above methods. Details are not described herein again.

[0290] In some embodiments, the transceiver module can include a receiving module and a sending module, which can be separate or integrated together. Optionally, the sending module can be replaced by the transmitter. The receiving module can be replaced by the receiver.

[0291] In some embodiments, the processing module can be one module, or can include multiple sub-modules. Optionally, the multiple sub-modules perform all or part of the steps required to be performed by the processing module, respectively. Optionally, the processing module can be mutually replaced with the processor.

[0292] FIG. 7 is a structural schematic diagram of a network device according to an embodiment of the present disclosure. As shown in FIG. 7, the network device 7100 can include a transceiver module 7101. In some embodiments, the transceiver module 7101 is configured to send first information to a terminal, the first information including frequency domain information of an SSB beam, and the first information being used to instruct the terminal to determine a random access resource according to the first information. Optionally, the transceiver module 7101 is configured to perform at least one of the communication steps of determining and / or acquiring performed by the network device 102 in any of the above methods, which will not be described herein again.

[0293] In some embodiments, the transceiver module can include a receiving module and a sending module, which can be separate or integrated together. Optionally, the sending module can be mutually replaced with the transmitter. The receiving module can be mutually replaced with the receiver.

[0294] FIG. 8 is a structural schematic diagram of a communication device 8100 according to an embodiment of the present disclosure. The communication device 8100 can be a network device (such as an access network device, a core network device, etc.), a terminal (such as 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 8100 can be used to implement the methods described in the above method embodiments, and specific implementation can be referred to the descriptions in the above method embodiments.

[0295] As shown in FIG. 8, the communication device 8100 includes one or more third processors 8101. The third processor 8101 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 (such as 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. Optionally, the communication device 8100 is configured to perform any of the above methods. Optionally, the one or more third processors 8101 are configured to invoke instructions to cause the communication device 8100 to perform any of the above methods.

[0296] In some embodiments, the communication device 8100 further includes one or more third transceivers 8102. When the communication device 8100 includes one or more third transceivers 8102, the third transceiver 8102 performs at least one of the communication steps of sending and / or receiving in the above-described methods, and the third processor 8101 performs at least one of the other steps. In optional embodiments, a transceiver can include a receiver and / or a transmitter, which can be separate or integrated together. Optionally, the terms transceiver, transceiving unit, transceiver, transceiving circuit, interface circuit, interface, and the like can be replaced with each other, the terms transmitter, transmitting unit, transmitter, transmitting circuit, and the like can be replaced with each other, and the terms receiver, receiving unit, receiver, receiving circuit, and the like can be replaced with each other.

[0297] In some embodiments, the communication device 8100 further includes one or more third memories 8103 for storing data. Optionally, all or part of the third memory 8103 can also be outside the communication device 8100. In optional embodiments, the communication device 8100 can include one or more first interface circuits 8104. Optionally, the first interface circuit 8104 is connected to the third memory 8103, and the first interface circuit 8104 can be used to receive data from the third memory 8103 or other devices, and can be used to send data to the third processor 8101 or other devices. For example, the first interface circuit 8104 can read the data stored in the third memory 8103 and send the data to the third processor 8101.

[0298] The communication device 8100 described in the above embodiments can be a network device or a terminal, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 can not be limited by Figure 8. 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 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) others, and the like.

[0299] Figure 9 is a structural schematic diagram of a chip 8200 according to an embodiment of the present disclosure. For the case where the communication device 8100 is a chip or a chip system, reference can be made to the structural schematic diagram of the chip 8200 shown in Figure 9, but not limited thereto.

[0300] The chip 8200 includes one or more fourth processors 8201. The chip 8200 is configured to perform any of the above methods.

[0301] In some embodiments, the chip 8200 further includes one or more second interface circuits 8202. Optionally, the terms interface circuit, interface, transceiver pin, etc. can replace each other. In some embodiments, the chip 8200 further includes one or more fourth memories 8203 configured to store data. Optionally, all or part of the fourth memory 8203 can be outside the chip 8200. Optionally, the second interface circuit 8202 is connected with the fourth memory 8203, the second interface circuit 8202 can be configured to receive data from the fourth memory 8203 or other devices, and the second interface circuit 8202 can be configured to send data to the fourth memory 8203 or other devices. For example, the second interface circuit 8202 can read the data stored in the fourth memory 8203 and send the data to the fourth processor 8201.

[0302] In some embodiments, the second interface circuit 8202 performs at least one of the communication steps such as sending and / or receiving in the above methods. The second interface circuit 8202 performs the communication steps such as sending and / or receiving in the above methods, for example, means that the second interface circuit 8202 performs data interaction between the fourth processor 8201, the chip 8200, the fourth memory 8203 or the transceiver device. In some embodiments, the fourth processor 8201 performs at least one of the other steps.

[0303] The modules and / or devices described in each of the embodiments of the virtual device, the physical device, the chip, etc. can be combined or separated according to the situation. Optionally, part or all of the steps can also be performed by multiple modules and / or devices in cooperation, which is not limited here.

[0304] The disclosure also proposes a storage medium, and the above storage medium stores instructions, when the above instructions run on the communication device 8100, the communication device 8100 performs any of the above methods. Optionally, the above storage medium is an electronic storage medium. Optionally, the above storage medium is a computer readable storage medium, but is not limited to this, and it can also be a storage medium readable by other devices. Optionally, the above storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a transitory storage medium.

[0305] The disclosure also proposes a program product, and the above program product is executed by the communication device 8100, so that the communication device 8100 performs any of the above methods. Optionally, the above program product is a computer program product.

[0306] The disclosure also proposes a computer program, when it runs on a computer, so that the computer performs any of the above methods.

Claims

1. A communication method characterized by comprising: The method is performed by a terminal, and the method comprises: receiving first information sent by a network device, the first information comprising frequency domain information of a synchronization signal block (SSB) beam; determining a target SSB beam from the SSB beam according to the first information; determining a random access resource of the terminal according to the target SSB beam.

2. The method of claim 1, wherein, The frequency domain information comprises frequency domain index information of the SSB beam.

3. The method of claim 2, wherein, The frequency domain index information comprises subcarrier index information and / or subband index information.

4. The method of claim 3, wherein, The frequency domain index information comprises subband index information, and the subband index information comprises bit information, wherein the bit information is used to indicate a frequency domain subband index of the SSB beam.

5. The method of claim 4, wherein, The terminal comprises a set mapping relationship, the set mapping relationship is used to indicate a one-to-one correspondence between a plurality of subband index information and a plurality of bit numbers on the bit information, and the determining the target SSB beam from the SSB beam according to the first information comprises: determining frequency domain position information corresponding to the SSB beam based on the set mapping relationship according to the bit number on the bit information; determining the target SSB beam from the SSB beam according to the frequency domain position information.

6. The method of claim 1, wherein, The SSB beam comprises a plurality of SSB beams, and the frequency domain information comprises a plurality of frequency domain index information of the plurality of SSB beams, wherein SSB indexes of the plurality of SSB beams are the same.

7. The method according to any one of claims 2-6, characterized in that, The first information is carried by a management information block (MIB).

8. The method of claim 1, wherein, The frequency domain information comprises a demodulation reference signal (DMRS) sequence of the SSB beam.

9. The method according to any one of claims 1-8, characterized in that, The random access resource comprises a random access resource block (RO) and / or a random access (RA) preamble set.

10. The method of claim 9, wherein, The frequency information comprises a plurality of frequency domain index information of the SSB beam, and the random access resource comprises the RO, and the determining the random access resource of the terminal according to the target SSB beam comprises: determining that ROs associated with the plurality of frequency domain index information are different; determining target frequency domain position information of the target SSB beam according to target frequency domain index information of the target SSB beam; determining a corresponding target RO as the random access resource according to the target frequency domain position information.

11. The method of claim 9, wherein, The frequency information comprises a plurality of frequency domain index information of the SSB beam, and the random access resource comprises the RO and the RA preamble set, and the determining the random access resource of the terminal according to the target SSB beam comprises: determining that ROs associated with the plurality of frequency domain index information are the same; determining target frequency domain position information of the target SSB beam according to target frequency domain index information of the target SSB beam; determining a target RA of a corresponding target RO as the random access resource according to the target frequency domain position information.

12. The method according to any one of claims 1-11, characterized in that, The method further comprises: sending random access information to the network device based on the random access resource.

13. A method of communication, comprising: The method is performed by a network device, and the method comprises: sending first information to a terminal, the first information comprising frequency domain information of a synchronization signal block (SSB) beam, and the first information being used to instruct the terminal to determine a random access resource according to the first information.

14. The method of claim 13, wherein, The frequency domain information comprises frequency domain index information of the SSB beam.

15. The method of claim 14, wherein, The frequency domain index information comprises subcarrier index information and / or subband index information.

16. The method of claim 15, wherein, The frequency domain index information comprises subband index information, and the subband index information comprises bit information, where the bit information is used to indicate a frequency domain subband index of the SSB beam.

17. The method of claim 13, wherein, The SSB beam comprises a plurality of SSB beams, and the frequency domain information comprises a plurality of frequency domain index information of the plurality of SSB beams, where SSB indexes of the plurality of SSB beams are the same.

18. The method according to any one of claims 14-17, characterized by, The first information is carried by a MIB.

19. The method of claim 13, wherein, The frequency domain information comprises a DMRS sequence of the SSB beam.

20. The method of any one of claims 13-19, wherein, The method further comprises: receiving random access information sent by the terminal based on the random access resource.

21. A terminal, characterized by comprising: a transceiver module, configured to receive first information sent by a network device, the first information comprising frequency domain information of a synchronization signal block (SSB) beam; a processing module, configured to determine a target SSB beam from the SSB beam according to the first information; the processing module is further configured to determine a random access resource of the terminal according to the target SSB beam.

22. A network device, comprising: comprising: a transceiver module, configured to send first information to a terminal, the first information comprising frequency domain information of an SSB beam, the first information being used to instruct the terminal to determine a random access resource according to the first information.

23. A terminal, characterized by comprising: one or more processors; wherein the terminal is configured to perform the communication method of any one of claims 1-12.

24. A network device, comprising: comprising: one or more processors; wherein the access network device is configured to perform the communication method of any one of claims 13-19.

25. A communication system, characterized by comprising a terminal and a network device; wherein the terminal is configured to receive first information sent by a network device, the first information comprising frequency domain information of a synchronization signal block (SSB) beam, determine a target SSB beam from the SSB beam according to the first information, and determine a random access resource of the terminal according to the target SSB beam; and the network device is configured to send first information to the terminal, the first information comprising frequency domain information of an SSB beam, the first information being used to instruct the terminal to determine a random access resource according to the first information.

26. A storage medium, the storage medium storing instructions, wherein, When the instructions are run on a communication device, the communication device is caused to perform the communication method of any one of claims 1-12, or the communication device is caused to perform the communication method of any one of claims 13-19.

27. A computer program product comprising computer programs and / or instructions, characterized in that, The computer program and / or instructions, when executed by a communication device, implement the communication method of any one of claims 1-12, or the computer program and / or instructions, when executed by a communication device, implement the communication method of any one of claims 13-19.

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