Synchronization signal / PBCH block (SSB) index indication methods, terminal devices, network devices and storage medium

Abstract

The present disclosure relates to synchronization signal / PBCH block (SSB) index indication methods, terminal devices, network devices and a storage medium. A method comprises: a terminal device receiving first indication information of a network device, the first indication information indicating the number of times an SSB index is mapped, wherein the terminal device can determine a binding relationship between the SSB index and an RACH occasion (RO) and / or a preamble on the basis of the indicated number of times the SSB index is mapped. Indications of different numbers of times of mapping can be facilitated when terminal devices in beam coverage areas are unevenly distributed, so that the situation of access failure of terminal devices in some beam coverage areas is avoided, and the communication efficiency is improved.

Description

Synchronous signal block (SSB) index indication method, terminal device, network device and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a method for indicating a synchronization signal block (SSB) index, a terminal device, a network device, and a storage medium. Background Art

[0002] In the New Radio Terrestrial Network (NR TN), the synchronization signal block (SSB) index is bound to the random access opportunity (RACH Occasion, RO). The network device can determine the SSB index selected by the terminal device based on the preamble sent by the terminal device and the RO resources used.

[0003] Among them, the binding relationship between the SSB index and the RO and preamble is determined based on the fair mapping rule. When the terminal devices in the beam coverage area are unbalanced, there may be access failures in some beam coverage areas due to the large number of terminal devices and fierce competition, which reduces communication efficiency.

[0004] Summary of the Invention

[0005] The embodiments of the present disclosure provide a method for indicating the SSB index of a synchronization signal block, a terminal device, a network device, and a storage medium. The terminal device receives first indication information of a network device for indicating the number of mappings of the SSB index, thereby being able to indicate more mappings for the SSB index of an area with more beam coverage of the terminal device, thereby increasing access opportunities for the SSB index, thereby increasing the possibility of successful access of the terminal device and further improving communication efficiency.

[0006] According to the first aspect of an embodiment of the present disclosure, a method for indicating a synchronization signal block SSB index is proposed, which is executed by a terminal device and includes: receiving first indication information of a network device; the first indication information indicates the number of mappings of the SSB index.

[0007] According to the second aspect of an embodiment of the present disclosure, a method for indicating a synchronization signal block SSB index is proposed. The method is executed by a network device, and the method includes: sending first indication information; the first indication information indicates the number of mappings of the SSB index.

[0008] According to the third aspect of an embodiment of the present disclosure, a method for indicating the SSB index of a synchronization signal block is proposed, which is executed by a communication system, and the method includes: a network device sends first indication information to a terminal device; the first indication information indicates the number of mappings of the SSB index; the terminal device determines the binding relationship between the SSB index and the random access opportunity RO based on the first indication information, and / or determines the binding relationship between the SSB index and the preamble code.

[0009] According to a fourth aspect of an embodiment of the present disclosure, a terminal device is provided, including:

[0010] The transceiver module is used to receive first indication information from a network device; the first indication information indicates the number of mappings of the SSB index.

[0011] According to a fifth aspect of an embodiment of the present disclosure, a network device is provided, including:

[0012] The transceiver module is used to send a first indication information; the first indication information indicates the number of mapping times of the SSB index.

[0013] According to a sixth aspect of an embodiment of the present disclosure, a terminal device is provided, including:

[0014] one or more processors;

[0015] The processor is used to call instructions so that the terminal device executes the processing method described in any aspect of the first aspect.

[0016] According to a seventh aspect of an embodiment of the present disclosure, a network device is provided, including:

[0017] one or more processors;

[0018] The processor is used to call instructions so that the network device executes the processing method described in any aspect of the second aspect.

[0019] According to the eighth aspect of an embodiment of the present disclosure, a communication system is proposed, characterized in that it includes a terminal device and a network device, wherein the terminal device is configured to implement the method for indicating the SSB index of the synchronization signal block described in the first aspect, and the network device is configured to implement the method for indicating the SSB index of the synchronization signal block described in the second aspect.

[0020] According to the ninth aspect of an embodiment of the present disclosure, a storage medium is proposed, which stores instructions, and is characterized in that when the instructions are executed on a communication device, the communication device executes the method described in any one of the first and second aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0022] FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure;

[0023] FIG2 is an interactive diagram of a method for indicating a synchronization signal block SSB index according to an embodiment of the present disclosure;

[0024] 3A-3D are flowcharts illustrating a method for indicating a synchronization signal block SSB index according to an embodiment of the present disclosure;

[0025] 4A-4C are flowcharts illustrating a method for indicating a synchronization signal block SSB index according to an embodiment of the present disclosure;

[0026] FIG5 is a schematic flow chart of a method for indicating a synchronization signal block SSB index according to an embodiment of the present disclosure;

[0027] FIG6A is a schematic diagram of a mapping relationship 1 between RO and SSB;

[0028] FIG6B is a schematic diagram of a mapping relationship 2 between RO and SSB;

[0029] FIG7A is a schematic diagram of the structure of a terminal device proposed in an embodiment of the present disclosure;

[0030] FIG7B is a schematic diagram of the structure of a network device proposed in an embodiment of the present disclosure;

[0031] FIG8A is a schematic structural diagram of a communication device proposed in an embodiment of the present disclosure;

[0032] FIG8B is a schematic diagram of the structure of the chip proposed in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0033] The embodiments of the present disclosure propose a method for indicating the synchronization signal block SSB index, a terminal device, a network device and a storage medium.

[0034] In the first aspect, an embodiment of the present disclosure proposes a method for indicating a synchronization signal block SSB index, which is executed by a terminal device and includes: receiving first indication information from a network device; the first indication information indicates the number of mappings of the SSB index.

[0035] In the above embodiment, the terminal device receives the first indication information of the network device; the first indication information indicates the mapping number of the SSB index; wherein the terminal device can determine the binding relationship between the SSB and the random access opportunity RO and / or the preamble code according to the indicated mapping number of the SSB; in the case of an imbalance of terminal devices within the beam coverage area, the indication of different mapping times can be facilitated, thereby avoiding the access failure of terminal devices in part of the beam coverage area and improving communication efficiency.

[0036] In combination with some embodiments of the first aspect, in some embodiments, the first indication information indicates the number of mappings of the SSB index and the random access opportunity RO; and / or, the first indication information indicates the number of mappings of the SSB index and the preamble code.

[0037] In combination with some embodiments of the first aspect, in some embodiments, the first indication information includes multiple bits or bit strings; wherein the value of each bit or bit string indicates the number of mappings of an SSB index.

[0038] In combination with some embodiments of the first aspect, in some embodiments, the first indication information includes at least one SSB index and the number of mappings of the SSB index.

[0039] In combination with some embodiments of the first aspect, in some embodiments, the SSB index indicated with the number of mappings in the first indication information is an SSB index of valid transmission; or, the SSB index indicated with the number of mappings in the first indication information is an SSB index of valid transmission and the number of mappings is not the default number of mappings.

[0040] In combination with some embodiments of the first aspect, in some embodiments, the number of mappings of the SSB index and the RO is indicated based on the first indication information; the number of mappings indicates the ratio between the number of ROs of the SSB index and the number of ROs of the SSB index indicated in the configuration parameters; or, the number of mappings indicates the number of ROs of the SSB index.

[0041] In combination with some embodiments of the first aspect, in some embodiments, the number of mappings of the SSB index and the preamble code is indicated based on the first indication information; the number of mappings indicates the ratio between the number of preamble codes of the SSB index and the number of preamble codes of the SSB index indicated in the configuration parameters; or, the number of mappings indicates the number of preamble codes of the SSB index.

[0042] In combination with some embodiments of the first aspect, in some embodiments, the multiple mapping times indicated in the first indication information are different, and / or the mapping times indicated in the first indication information are different from the default mapping times.

[0043] In combination with some embodiments of the first aspect, in some embodiments, the receiving first indication information of the network device includes: receiving the system information block 1 SIB1 information of the network device; the SIB1 information carries the first indication information; or, receiving the service cell configuration public information of the network device; the service cell configuration public information carries the first indication information.

[0044] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: based on the first indication information indicating the number of mappings of the SSB index to the random access opportunity RO, determining the binding relationship between the SSB index and the RO according to the first indication information; and / or, based on the first indication information indicating the number of mappings of the SSB index to the preamble, determining the binding relationship between the SSB index and the preamble according to the first indication information.

[0045] In the second aspect, an embodiment of the present disclosure proposes a method for indicating a synchronization signal block SSB index, which is executed by a network device and includes: sending first indication information; the first indication information indicates the number of mappings of the SSB index.

[0046] In combination with some embodiments of the second aspect, in some embodiments, the first indication information indicates the number of mappings of the SSB index and the random access opportunity RO; and / or, the first indication information indicates the number of mappings of the SSB index and the preamble code.

[0047] In combination with some embodiments of the second aspect, in some embodiments, the first indication information includes multiple bits or bit strings; wherein the value of each bit or bit string indicates the number of mappings of an SSB index.

[0048] In combination with some embodiments of the second aspect, in some embodiments, the first indication information includes at least one SSB index and the number of mappings of the SSB index.

[0049] In combination with some embodiments of the second aspect, in some embodiments, the SSB index indicated with the number of mappings in the first indication information is an SSB index of valid transmission; or, the SSB index indicated with the number of mappings in the first indication information is an SSB index of valid transmission and the number of mappings is not the default number of mappings.

[0050] In combination with some embodiments of the second aspect, in some embodiments, the number of mappings of the SSB index and the RO is indicated based on the first indication information; the number of mappings indicates the ratio between the number of ROs of the SSB index and the number of ROs of the SSB index indicated in the configuration parameters; or, the number of mappings indicates the number of ROs of the SSB index.

[0051] In combination with some embodiments of the second aspect, in some embodiments, the number of mappings of the SSB index and the preamble code is indicated based on the first indication information; the number of mappings indicates the ratio between the number of preamble codes of the SSB index and the number of preamble codes of the SSB index indicated in the configuration parameters; or, the number of mappings indicates the number of preamble codes of the SSB index.

[0052] In combination with some embodiments of the second aspect, in some embodiments, the multiple mapping times indicated in the first indication information are different, and / or the mapping times indicated in the first indication information are different from the default mapping times.

[0053] In combination with some embodiments of the second aspect, in some embodiments, sending the first indication information includes: sending system information block 1 SIB1 information; the SIB1 information carries the first indication information; or, sending service cell configuration public information; the service cell configuration public information carries the first indication information.

[0054] In the third aspect, an embodiment of the present disclosure proposes a method for indicating the SSB index of a synchronization signal block, which is executed by a communication system, and the method includes: a network device sends a first indication message to a terminal device; the first indication message indicates the number of mappings of the SSB index; the terminal device determines the binding relationship between the SSB index and the random access opportunity RO based on the first indication message, and / or determines the binding relationship between the SSB index and the preamble code.

[0055] In a fourth aspect, an embodiment of the present disclosure provides a terminal device, comprising:

[0056] The transceiver module is used to receive first indication information from a network device; the first indication information indicates the number of mappings of the SSB index.

[0057] In combination with some embodiments of the fourth aspect, in some embodiments, the first indication information indicates the number of mappings of the SSB index and the random access opportunity RO; and / or, the first indication information indicates the number of mappings of the SSB index and the preamble code.

[0058] In combination with some embodiments of the fourth aspect, in some embodiments, the first indication information includes multiple bits or bit strings; wherein the value of each bit or bit string indicates the number of mappings of an SSB index.

[0059] In combination with some embodiments of the fourth aspect, in some embodiments, the first indication information includes at least one SSB index and the number of mappings of the SSB index.

[0060] In combination with some embodiments of the fourth aspect, in some embodiments, the SSB index indicated with the number of mappings in the first indication information is an SSB index of valid transmission; or, the SSB index indicated with the number of mappings in the first indication information is an SSB index of valid transmission and the number of mappings is not the default number of mappings.

[0061] In combination with some embodiments of the fourth aspect, in some embodiments, the number of mappings of the SSB index and the RO is indicated based on the first indication information; the number of mappings indicates the ratio between the number of ROs of the SSB index and the number of ROs of the SSB index indicated in the configuration parameters; or, the number of mappings indicates the number of ROs of the SSB index.

[0062] In combination with some embodiments of the fourth aspect, in some embodiments, the number of mappings of the SSB index and the preamble code is indicated based on the first indication information; the number of mappings indicates the ratio between the number of preamble codes of the SSB index and the number of preamble codes of the SSB index indicated in the configuration parameters; or, the number of mappings indicates the number of preamble codes of the SSB index.

[0063] In combination with some embodiments of the fourth aspect, in some embodiments, the multiple mapping times indicated in the first indication information are different, and / or the mapping times indicated in the first indication information are different from the default mapping times.

[0064] In combination with some embodiments of the fourth aspect, in some embodiments, the transceiver module is specifically used to receive the system information block 1 SIB1 information of the network device; the SIB1 information carries the first indication information; or, receive the service cell configuration public information of the network device; the service cell configuration public information carries the first indication information.

[0065] In combination with some embodiments of the fourth aspect, in some embodiments, the terminal device also includes: a processing module, used to indicate the number of mappings of the SSB index and the random access opportunity RO based on the first indication information, and determine the binding relationship between the SSB index and the RO according to the first indication information; and / or, based on the number of mappings of the SSB index and the preamble indicated by the first indication information, determine the binding relationship between the SSB index and the preamble according to the first indication information.

[0066] In a fifth aspect, an embodiment of the present disclosure provides a network device, comprising:

[0067] The transceiver module is used to send a first indication information; the first indication information indicates the number of mapping times of the SSB index.

[0068] In combination with some embodiments of the fifth aspect, in some embodiments, the first indication information indicates the number of mappings of the SSB index and the random access opportunity RO; and / or, the first indication information indicates the number of mappings of the SSB index and the preamble code.

[0069] In combination with some embodiments of the fifth aspect, in some embodiments, the first indication information includes multiple bits or bit strings; wherein the value of each bit or bit string indicates the number of mappings of an SSB index.

[0070] In combination with some embodiments of the fifth aspect, in some embodiments, the first indication information includes at least one SSB index and the number of mappings of the SSB index.

[0071] In combination with some embodiments of the fifth aspect, in some embodiments, the SSB index indicated with the number of mappings in the first indication information is an SSB index of valid transmission; or, the SSB index indicated with the number of mappings in the first indication information is an SSB index of valid transmission and the number of mappings is not the default number of mappings.

[0072] In combination with some embodiments of the fifth aspect, in some embodiments, the number of mappings of the SSB index and the RO is indicated based on the first indication information; the number of mappings indicates the ratio between the number of ROs of the SSB index and the number of ROs of the SSB index indicated in the configuration parameters; or, the number of mappings indicates the number of ROs of the SSB index.

[0073] In combination with some embodiments of the fifth aspect, in some embodiments, the number of mappings of the SSB index and the preamble code is indicated based on the first indication information; the number of mappings indicates the ratio between the number of preamble codes of the SSB index and the number of preamble codes of the SSB index indicated in the configuration parameters; or, the number of mappings indicates the number of preamble codes of the SSB index.

[0074] In combination with some embodiments of the fifth aspect, in some embodiments, the multiple mapping times indicated in the first indication information are different, and / or the mapping times indicated in the first indication information are different from the default mapping times.

[0075] In combination with some embodiments of the fifth aspect, in some embodiments, the transceiver module is specifically used to send system information block 1 SIB1 information; the SIB1 information carries the first indication information; or, send service cell configuration public information; the service cell configuration public information carries the first indication information.

[0076] In the sixth aspect, an embodiment of the present disclosure proposes a terminal device, which includes: one or more processors; wherein the processor is used to execute an optional implementation method of the method for indicating the synchronization signal block SSB index proposed in the first aspect.

[0077] In a seventh aspect, an embodiment of the present disclosure proposes a network device, which includes: one or more processors; wherein the processors are used to execute an optional implementation of the method for receiving data and / or signaling proposed in the second aspect.

[0078] In an eighth aspect, an embodiment of the present disclosure proposes a communication system, which includes: a terminal device and a network device; wherein the terminal device is configured to execute the method described in the optional implementation manner of the first aspect, and the network device is configured to execute the method described in the optional implementation manner of the second aspect.

[0079] In the ninth aspect, an embodiment of the present disclosure proposes a storage medium, which stores instructions. When the instructions are executed on a communication device, the communication device executes the method described in the optional implementation of the first and second aspects.

[0080] In a tenth aspect, an embodiment of the present disclosure proposes a program product, including a computer program. When the computer program is executed by a communication device, the communication device executes the method described in the optional implementation of the first and second aspects.

[0081] In an eleventh aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first and second aspects.

[0082] In a twelfth aspect, an embodiment of the present disclosure provides a chip or a chip system, which includes a processing circuit configured to execute the method described in the optional implementation of the first and second aspects above.

[0083] It is understandable that the above-mentioned terminal devices, network devices, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to perform the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0084] The embodiments of the present disclosure provide a method for indicating a synchronization signal block SSB index. In some embodiments, the terms "method for indicating a synchronization signal block SSB index," "data transmission method," "transmission method," and "communication method" are interchangeable; the terms "device for indicating a synchronization signal block SSB index," "data transmission device," "transmission device," and "communication device" are interchangeable; and the terms "transmission system," "data transmission system," and "communication system" are interchangeable.

[0085] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0086] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0087] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0088] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0089] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0090] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0091] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0092] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0093] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0094] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0095] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0096] In some embodiments, terms such as "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 less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0097] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0098] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0099] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0100] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal device (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

[0101] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0102] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0103] FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0104] As shown in FIG1 , a communication system 100 includes a terminal device 101 and a network device 102 .

[0105] In some embodiments, the terminal device 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0106] In some embodiments, the network device 102 may include at least one of an access network device and a core network device.

[0107] In some embodiments, the access network device is, for example, a node or device that accesses a terminal device to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0108] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0109] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0110] In some embodiments, a core network device may be a device including one or more network elements, or may be multiple devices or device groups, each including all or part of the one or more network elements. The network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0111] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0112] The following embodiments of the present disclosure may be applied to the communication system shown in Figure 1, or a portion of the entities, but are not limited thereto. The entities shown in Figure 1 are illustrative only. The communication system may include all or part of the entities shown in Figure 1, or may include other entities outside of Figure 1. The number and form of the entities are arbitrary, and the entities may be physical or virtual. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, either directly or indirectly, and may be wired or wireless.

[0113] The 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 (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0114] In the New Radio Terrestrial Network (NR TN), the synchronization signal block (SSB) index is bound to the random access opportunity (RACH Occasion, RO). The network device can determine the SSB index selected by the terminal device based on the preamble sent by the terminal device and the RO resources used.

[0115] Among them, the binding relationship between the SSB index and the RO and preamble is determined based on the fair mapping rule. When the terminal devices in the beam coverage area are unbalanced, there may be access failures in some beam coverage areas due to the large number of terminal devices and fierce competition, which reduces communication efficiency.

[0116] FIG2 is an interactive diagram of a method for indicating a synchronization signal block SSB index according to an embodiment of the present disclosure. As shown in FIG2 , an embodiment of the present disclosure relates to a method for indicating a synchronization signal block SSB index, which is used in a terminal device 101 and a network device 102. The method includes:

[0117] Step S2101, the network device sends a first indication message to the terminal device; the first indication message indicates the number of mappings of the SSB index.

[0118] In some embodiments, the terminal device 101 is, for example, an NTN terminal device, a TN terminal device, an NB-IOT terminal device, etc., which is not limited in this disclosure.

[0119] In some embodiments, the terms "NTN", "Non-Terrestrial Network", "Satellite Communication", etc. can be used interchangeably.

[0120] In some embodiments, the terms "TN", "ground network", "Terrestrial Network", etc. can be used interchangeably.

[0121] In some embodiments, terms such as "NB-IOT", "Narrow Band Internet of Things", and "Narrow Band Internet of Things" may be used interchangeably.

[0122] In some embodiments, the first indication information may be carried in System Information Block 1 (SIB 1) and / or in ServingCellConfigCommon information. The SIB1 information and the ServingCellConfigCommon information may be sent at different times, and the ServingCellConfigCommon information may be sent after the SIB1 information.

[0123] In one example, the network device may send SIB1 information to the terminal device; the SIB1 information may carry the first indication information. In another example, the network device may send serving cell configuration common information to the terminal device for configuring secondary cell information; the serving cell configuration common information may carry the first indication information. In another example, the network device may send SIB information and serving cell configuration common information to the terminal device; both of the above information may carry the first indication information.

[0124] In some embodiments, the first indication information may indicate the number of mappings between the SSB index and the random access opportunity (RACHOccasion, RO); and / or, the first indication information may indicate the number of mappings between the SSB index and the preamble (Preamble).

[0125] The random access opportunity (RO) is the time-frequency resource at which the terminal device initiates a random access request to the network device. The preamble is a sequence sent by the terminal device to the network device on a specific RO for uplink synchronization.

[0126] The SSB index may be an index of an SSB in an SSB burst set, wherein the SSB burst set includes multiple SSBs that the network device needs to send to complete a beam cycle scan and corresponding SSB indexes.

[0127] In one example, the first indication information may indicate the number of mappings between the SSB index and the RO. In this example, the number of mappings may indicate the ratio between the number of ROs of the SSB index and the number of ROs of the SSB index indicated in the configuration parameter; or, the number of mappings may indicate the number of ROs of the SSB index.

[0128] The configuration parameters in this example refer to ssb-perRACH-OccasionAndCB-PreamblesPerSSB. ssb-perRACH-Occasion defines the number of SSBs corresponding to one RO, and CB-PreamblesPerSSB defines the number of preambles corresponding to one SSB.

[0129] In which, in the case where the mapping number indicates the ratio between the number of ROs of the SSB index and the number of ROs of the SSB index indicated in the configuration parameter, in one example, the SSB index indicated with the mapping number in the first indication information may be an SSB index that is effectively transmitted. In another example, the SSB index indicated with the mapping number in the first indication information may be an SSB index that is effectively transmitted and whose mapping number is not the default mapping number.

[0130] Whether the SSB index of the SSB in the SSB burst set is transmitted, that is, whether the SSB index is a validly transmitted SSB index, can be determined by the second indication information of the network device. The second indication information can be SIB1 information or service cell configuration public information. The second indication information can include the SSB burst set position (ssb-PositionsInBurst), wherein an indication bit can be set for each SSB index to indicate whether the SSB index is transmitted. The value of the indication bit can be, for example, 0 or 1. When the value of the indication bit is 0, it indicates that the SSB index is not transmitted; when the value of the indication bit is 1, it indicates that the SSB index is transmitted. For example, ssb-PositionsInBurst=1111 indicates that there are 4 SSBs set in the SSB burst set, and the indexes of the 4 SSBs are all transmitted.

[0131] In the first example, the first indication information may perform a mapping number (ratio) indication process for each validly transmitted SSB index. For example, in one case, the first indication information may include multiple bits or multiple bit strings; the value of each bit or bit string indicates the ratio corresponding to an SSB index. Taking ssb-PositionsInBurst=1111 as an example, the multiple bits in the first indication information may be, for example, 00, 00, 00, 01; indicating that the ratios corresponding to SSB#0 to SSB#3 are 1 time, 1 time, 1 time, and 2 times, respectively. If the configuration parameter (ssb-perRACH-OccasionAndCB-PreamblesPerSSB) indicates that the number of SSB indexes corresponding to one RO is 1, that is, ssb-perRACH-Occasion = 1, then the number of ROs corresponding to SSB#0 to SSB#3 are 1, 1, 1, and 2, respectively. That is, in one RO and SSB mapping cycle, the number of ROs is 1, 1, 1, and 2, respectively. This mapping relationship is repeated in subsequent mapping cycles. In this example, the first indication information only includes the mapping ratio value, and the mapping ratio value has a one-to-one correspondence with the effectively transmitted SSB index.

[0132] In another case, the first indication information may include multiple SSB indexes and the corresponding ratios of the SSB indexes.

[0133] Among them, in the second example, the SSB index indicated in the first indication information is the SSB index of the SSB that is effectively transmitted in the SSB burst set and the mapping number (ratio) is not the default mapping number (default ratio, for example, 1). In this example, the first indication information may include at least one SSB index and the ratio corresponding to the SSB index. For example, the first indication information may include SSB#3 and the ratio corresponding to SSB#3. Among them, the ratio corresponding to SSB#3 is 2, and the default mapping number is a standard predefined value of 1, then the ratios corresponding to SSB#0 to SSB#3 are 1, 1, 1, and 2, respectively, that is, in one RO and SSB mapping cycle, the number of ROs is 1, 1, 1, and 2, respectively, and this mapping relationship is repeated in subsequent mapping cycles.

[0134] In the above example, the mapping times (ratio) need to be multiplied by the value indicated in the configuration parameter (ssb-perRACH-OccasionAndCB-PreamblesPerSSB) to obtain the mapping relationship between each SSB and RO.

[0135] In which, in the case where the mapping number indicates the number of ROs of the SSB index, in one example, the SSB index indicated by the mapping number in the first indication information may be an SSB index of valid transmission. In another example, the SSB index indicated by the mapping number in the first indication information may be an SSB index of valid transmission and the mapping number is not the default mapping number.

[0136] In the first example, the first indication information can perform a mapping count (RO number) indication process for each validly transmitted SSB index. For example, in one case, the first indication information may include multiple bits or multiple bit strings; the value of each bit or bit string indicates the number of ROs for an SSB index. Taking ssb-PositionsInBurst=1111 as an example, the multiple bits in the first indication information can be, for example, 00, 00, 01, 01; where 00 indicates 1 / 2, 01 indicates 1, 10 indicates 2, and 11 indicates 4, that is, 00 means that each RO corresponds to 1 / 2 SSB, and so on. The number of ROs indicating SSB#0 to SSB#3 are 1 / 2, 1 / 2, 1, and 1, respectively. That is, in one RO and SSB mapping cycle, the mapping counts (RO numbers) are 1 / 2, 1 / 2, 1, and 1, respectively, and this mapping relationship is repeated in subsequent mapping cycles.

[0137] Among them, in the second example, the SSB index indicated in the first indication information is the SSB index of the SSB that is effectively transmitted in the SSB burst set and the mapping number (RO number) is not the default mapping number (default RO number, for example, 1). In this example, the first indication information may include at least one SSB index and the RO number of the SSB index. For example, the first indication information may include SSB#3 and the RO number of SSB#3. Among them, the RO number of SSB#3 is represented by 00, that is, the RO number is 1 / 2. Then the RO numbers of SSB#0 to SSB#3 are 1, 1, 1, and 1 / 2, respectively. That is, in a mapping cycle of RO and SSB, the mapping times are 1, 1, 1, and 1 / 2, and this mapping relationship is repeated in subsequent mapping cycles. In this example, the default mapping number may be a predefined value such as 1, or a value indicated by the network device, such as the ssb-perRACH-Occasion value indicated in the configuration parameter (ssb-perRACH-OccasionAndCB-PreamblesPerSSB).

[0138] It should be noted that, when the first indication information performs mapping number indication processing for each validly transmitted SSB index, the multiple mapping numbers indicated in the first indication information may be different. When the SSB index indicated in the first indication information is the SSB index of an SSB that is validly transmitted in an SSB burst set and whose mapping number is not the default mapping number, the mapping number indicated in the first indication information may be different from the default mapping number.

[0139] In another example, the first indication information may indicate the number of mappings between the SSB index and the preamble. In this example, the number of mappings may indicate the ratio between the number of preambles of the SSB index and the number of preambles of the SSB index indicated in the configuration parameter; or the number of mappings indicates the number of preambles of the SSB index.

[0140] The preamble in this embodiment may be, for example, a contention-based preamble (CB-Preamble). The configuration parameter in this example refers to CB-PreamblesPerSSB in ssb-perRACH-OccasionAndCB-PreamblesPerSSB. CB-PreamblesPerSSB defines the number of preambles corresponding to one SSB. The number of preambles defined by CB-PreamblesPerSSB may be selected from a set of available numbers of preambles. The set of available numbers may be, for example, {n4, n8, n12, n16, n20, n28, n32}.

[0141] Generally speaking, the more SSB indexes mapped in an RO, that is, the more SSBs corresponding to each RO, for example, ssb-perRACH-Occasion = 8, the fewer preambles are available for each SSB. The specific configuration depends on the network device configuration.

[0142] In the case where the mapping number indicates the ratio between the number of preamble codes of the SSB index and the number of preamble codes of the SSB index indicated in the configuration parameter, in one example, the SSB index indicated with the mapping number in the first indication information may be an SSB index that is effectively transmitted. In another example, the SSB index indicated with the mapping number in the first indication information may be an SSB index that is effectively transmitted and whose mapping number is not the default mapping number.

[0143] In the first example, the first indication information may perform a mapping number (ratio) indication process for each validly transmitted SSB index. For example, in one case, the first indication information may include multiple bits or multiple bit strings; the value of each bit or bit string indicates the ratio corresponding to an SSB index. Taking ssb-PositionsInBurst=1111 as an example, the multiple bits in the first indication information may be, for example, 00, 00, 00, 01; indicating that the ratios corresponding to SSB#0 to SSB#3 are 1 time, 1 time, 1 time, and 2 times, respectively. If the configuration parameter (ssb-perRACH-OccasionAndCB-PreamblesPerSSB) indicates that the number of preambles corresponding to an SSB index is 8, that is, CB-PreamblesPerSSB=8, then the number of preambles corresponding to SSB#0~SSB#3 is 8, 8, 8, and 16 respectively, that is, in one SSB and preamble mapping cycle, the number of preambles is 8, 8, 8, and 16 respectively, and this mapping relationship is repeated in subsequent mapping cycles. In this example, the first indication information only includes a mapping ratio value (i.e., ratio), and the mapping ratio value has a one-to-one correspondence with the effectively transmitted SSB index.

[0144] In another case, the first indication information may include multiple SSB indexes and the corresponding ratios of the SSB indexes.

[0145] Among them, in the second example, the SSB index indicated in the first indication information is the SSB index of the SSB that is effectively transmitted in the SSB burst set and the mapping number (ratio) is not the default mapping number (default ratio, for example, 1). In this example, the first indication information may include at least one SSB index and the ratio corresponding to the SSB index. For example, the first indication information may include SSB#3 and the ratio corresponding to SSB#3. Among them, the ratio corresponding to SSB#3 is 2, and the default mapping number is a standard predefined value of 1, then the ratios corresponding to SSB#0 to SSB#3 are 1, 1, 1, and 2, respectively, that is, in one mapping cycle of SSB and preamble code, the number of preamble codes is divided into 8, 8, 8, and 16, and this mapping relationship is repeated in subsequent mapping cycles.

[0146] In the above example, the mapping times (ratio) need to be multiplied by the value indicated in the configuration parameter (ssb-perRACH-OccasionAndCB-PreamblesPerSSB) to obtain the mapping relationship between each SSB and RO.

[0147] In which case, when the mapping number indicates the number of preamble codes of the SSB index, in one example, the SSB index indicated by the mapping number in the first indication information may be an SSB index of valid transmission. In another example, the SSB index indicated by the mapping number in the first indication information may be an SSB index of valid transmission and whose mapping number is not the default mapping number.

[0148] Among them, in the first example, the first indication information can perform a mapping number (number of preamble codes) indication process for each validly transmitted SSB index. For example, in one case, the first indication information may include multiple bits or multiple bit strings; the value of each bit or bit string indicates the number of preamble codes of an SSB index. Among them, taking ssb-PositionsInBurst=1111 as an example, the multiple bits in the first indication information can be, for example, 0111, 0111, 0111, 1111; indicating that the number of preamble codes of SSB#0 to SSB#3 are 8, 8, 8, and 16 respectively. That is, in one mapping cycle of SSB and preamble code, the mapping times (number of preamble codes) are 8, 8, 8, and 16 respectively, and this mapping relationship is repeated in subsequent mapping cycles.

[0149] Among them, in the second example, in the second example, the SSB index indicated in the first indication information is the SSB index of the SSB that is effectively transmitted in the SSB burst set and the mapping number (number of preambles) is not the default mapping number (default number of preambles, for example, 8). In this example, the first indication information may include at least one SSB index and the number of preambles of the SSB index. For example, the first indication information may include SSB#3 and the number of preambles of SSB#3. Among them, the number of preambles of SSB#3 is 16. Then, the number of preambles of SSB#0 to SSB#3 is 8, 8, 8, and 16, respectively, and this mapping relationship is repeated in subsequent mapping cycles. In this example, the default mapping number can be a predefined value such as 8, or it can be a value indicated by the network device, such as the CB-PreamblesPerSSB value indicated in the configuration parameter (ssb-perRACH-OccasionAndCB-PreamblesPerSSB).

[0150] In another example, the first indication information may indicate the number of mappings between the SSB index and the RO, and the number of mappings between the SSB index and the preamble code.

[0151] In this example, in one case, the number of mappings of the SSB index to the RO and the number of mappings of the SSB index to the preamble can be indicated simultaneously by one first indication information. In another case, the number of mappings of the SSB index to the RO can be indicated by one first indication information, and the number of mappings of the SSB index to the preamble can be indicated by another first indication information.

[0152] Additionally, in the correspondence between SSB and RO, when the first indication information is introduced, the consistency of the correspondence between the number of ROs and the SSB index is ensured, that is, there should be no situation where some ROs cannot be mapped to the SSBindex, such as SSB#0 corresponds to 1 / 2 ROs, and SSB#1, 2, and 3 all correspond to 1 RO. At this time, in each mapping cycle between RO and SSB, the indication of 1 / 2RO becomes meaningless.

[0153] Additionally, in the correspondence between SSBs and preambles, when the first indication information is introduced, the number of preambles in an RO is guaranteed not to exceed the maximum number of preambles in each RO. For example, if the maximum number of preambles in an RO is 56, and there are 8 SSB indices in an RO, and each SSB index corresponds to 8 preambles, then the total number of preambles corresponding to an RO is 64, which exceeds the maximum value of 56. This situation is not allowed.

[0154] In some embodiments, terms such as "SIB1", "System Information Block 1", and "System Information Block 1" may be used interchangeably.

[0155] In some embodiments, terms such as "serving cell configuration common information" and "ServingCellConfigCommon" can be used interchangeably.

[0156] In some embodiments, the terms "RO", "Random Access Opportunity", "RACH Occasion" and the like may be used interchangeably.

[0157] In some embodiments, the terms "preamble" and "preamble" can be used interchangeably.

[0158] In some embodiments, terms such as "SSB", "Synchronization Signal Block", "Synchronization Signal / PBCH Block" can be used interchangeably.

[0159] In some embodiments, terms such as "SSB burst concentration position", "ssb-PositionsInBurst", etc. can be used interchangeably.

[0160] Step S2102: The terminal device determines the binding relationship between the SSB index and the random access opportunity RO based on the first indication information, and / or determines the binding relationship between the SSB index and the preamble code.

[0161] In some embodiments, in one example, the first indication information may indicate the number of mappings between the SSB index and the RO. Correspondingly, the terminal device may determine the number of ROs for each SSB index based on the number of mappings between each SSB index and the RO indicated in the first indication information, and then select an RO for each SSB index based on the number of ROs for each SSB index, thereby obtaining a binding relationship between the SSB index and the RO.

[0162] In another example, the first indication information may indicate the number of mappings between the SSB index and the preamble. Correspondingly, the terminal device may first determine the number of ROs of each SSB index; for each SSB index, when the number of ROs of the SSB index is less than or equal to 1, select an RO for the SSB index; the terminal device may determine the number of preambles of the SSB index based on the number of mappings between the SSB index and the preamble indicated in the first indication information; and then select a preamble from the RO based on the number of preambles of the SSB index to obtain a binding relationship between the SSB index and the preamble; when the number of ROs of the SSB index is greater than 1, select multiple ROs for the SSB index based on the number of ROs; the terminal device may determine the number of preambles of the SSB index based on the number of mappings between the SSB index and the preamble indicated in the first indication information; and then select the number of preambles from each RO based on the number of preambles of the SSB index to obtain a binding relationship between the SSB index and the preamble.

[0163] In another example, the first indication information may indicate the number of mappings between the SSB index and the RO, and the number of mappings between the SSB index and the preamble. Correspondingly, for each SSB index, the terminal device may determine the number of ROs of the SSB index based on the number of mappings between the SSB index and the RO indicated in the first indication information; the terminal device may determine the number of preambles of the SSB index based on the number of mappings between the SSB index and the preamble indicated in the first indication information; the terminal device selects an SSB index based on the measurement result, and sends the corresponding preamble on the RO corresponding to the SSB index; in this example, the first indication information for indicating the number of mappings between the SSB index and the RO and the first indication information for indicating the number of mappings between the SSB index and the preamble may be a parameter or different parameters respectively.

[0164] In this example, for a certain SSB index, assuming that the default number of ROs for the SSB index is 1, and assuming that the default number of preamble codes for the SSB index is 8; the number of ROs determined by combining the number of mappings of the SSB index and the RO is 2, and the number of preamble codes determined by combining the number of mappings of the SSB index and the preamble code is 16, then the total number of preamble codes that can be used for the SSB index is 32 (16 repeated, but located on different RO resources), which is four times the total number of 8 preamble codes that can be used for the previous SSB index (8 non-repeated, and only one RO resource).

[0165] Among them, the determination of the binding relationship between the SSB index and the RO, and / or the binding relationship between the SSB index and the preamble code, makes it convenient for the network device to determine the SSB index selected by the terminal device in combination with the above binding relationship when receiving the preamble code sent by the terminal device.

[0166] Among them, the relationship between SSB, RO and preamble is defined in the network device through two parameters. The two parameters are msg1-FDM and ssb-perRACH-OccasionAndCB-PreamblesPerSSB. Among them, msg1-FDM defines the number of ROs on the same time resources and different frequency domain resources. ssb-perRACH-OccasionAndCB-PreamblesPerSSB defines the number of SSBs corresponding to one RO and the number of preambles corresponding to one SSB. Among them, when the number of SSBs corresponding to the RO is 1, the first indication information sent by the network device to the terminal device can be used to indicate the number of mappings between the SSB index and the RO, and / or to indicate the number of mappings between the SSB index and the preamble. In this case, the network device can determine the SSB index that has a binding relationship with the preamble based on the preamble sent by the terminal device; or, the network device can determine the RO based on the preamble sent by the terminal device, and then determine the SSB index that has a binding relationship with the RO.

[0167] Among them, when the number of SSBs corresponding to the RO is greater than 1, the first indication information sent by the network device to the terminal device can be used to indicate the number of mappings of the SSB index to the preamble code, or to indicate the number of mappings of the SSB index to the RO and the number of mappings of the SSB index to the preamble code. In this case, the network device can determine the SSB index that has a binding relationship with the preamble code based on the preamble code sent by the terminal device.

[0168] For example, assuming the number of times SSBs are mapped to ROs is the number of ROs in the SSB, and in the case of msg1-FDM = one and ssb-perRACH-Occasion = one in ssb-perRACH-OccasionAndCB-PreamblesPerSSB, one RO corresponds to one SSB. Assume that the SSB burst set includes SSB#0 to SSB#3, that is, four SSBs. In this case, based on the fair mapping rule, the number of times each SSB is mapped to an RO is 1. The mapping result, that is, the binding relationship, can be, for example, RO#1 corresponds to SSB#0; RO#2 corresponds to SSB#1; RO#3 corresponds to SSB#2; RO#4 corresponds to SSB#3; RO#5 corresponds to SSB#0; RO#6 corresponds to SSB#1; and so on.

[0169] In this case, it is assumed that the first indication information sent by the network device to the terminal device is used to indicate the number of mappings between SSB and RO, wherein the number of mappings between SSB#0 to SSB#2 and RO is 1, and the number of mappings between SSB#3 and RO is 2. Then the mapping relationship, that is, the binding relationship can be, for example, RO#1 corresponds to SSB#0; RO#2 corresponds to SSB#1; RO#3 corresponds to SSB#2; RO#4 corresponds to SSB#3; RO#5 corresponds to SSB#3; RO#6 corresponds to SSB#0;...

[0170] In this embodiment, the network device sends a first indication message to the terminal device; the first indication message indicates the number of mappings of the SSB index; the terminal device determines the binding relationship between the SSB index and the random access opportunity RO based on the first indication message, and / or determines the binding relationship between the SSB index and the preamble code; wherein, the indication of the number of mappings of the SSB can facilitate the indication of different mapping times when the terminal devices are unbalanced within the beam coverage area, thereby avoiding the access failure of terminal devices in part of the beam coverage area and improving communication efficiency.

[0171] FIG3A is a flow chart of a method for indicating a synchronization signal block SSB index according to an embodiment of the present disclosure. As shown in FIG3A , the embodiment of the present disclosure relates to a method for indicating a synchronization signal block SSB index, which is used in a terminal device 101 and includes:

[0172] Step S3101, receiving first indication information from a network device; the first indication information indicates the number of mappings of the SSB index.

[0173] In some embodiments, the first indication information may indicate the number of mappings between the SSB index and the random access opportunity RO; and / or the first indication information may indicate the number of mappings between the SSB index and the preamble. The number of mappings between the SSB index and the random access opportunity RO is used by the terminal device to determine the binding relationship between the SSB index and the RO; the number of mappings between the SSB index and the preamble is used by the terminal device to determine the binding relationship between the SSB index and the preamble.

[0174] In some embodiments, the first indication information may include multiple bits or bit strings; wherein the value of each bit or bit string indicates the number of mappings of an SSB index. The value of each bit or bit string may indicate the number of mappings of an SSB index to an RO, or the number of mappings of an SSB index to a preamble.

[0175] In some embodiments, the first indication information may include at least one SSB index and the number of mappings of the SSB index, wherein the number of mappings of the SSB index may include, for example, the number of mappings of the SSB index to the RO and / or the number of mappings of the SSB index to the preamble.

[0176] In some embodiments, the SSB index indicated with the number of mappings in the first indication information is an SSB index that is effectively transmitted; or, the SSB index indicated with the number of mappings in the first indication information is an SSB index that is effectively transmitted and the number of mappings is not the specified number of mappings.

[0177] It should be noted that, when the SSB index indicated by the first indication information with the number of mappings is a validly transmitted SSB index, in one example, the first indication information may include multiple bits or bit strings; wherein the value of each bit or bit string indicates the number of mappings of an SSB index. In another example, the first indication information may include at least one SSB index and the number of mappings of the SSB index.

[0178] In which, when the SSB index indicated with the mapping number in the first indication information is an SSB index that is effectively transmitted and the mapping number is not the specified mapping number, the first indication information may include at least one SSB index and the mapping number of the SSB index.

[0179] In some embodiments, the number of mappings between the SSB index and the RO is indicated based on the first indication information; the number of mappings indicates the ratio between the number of ROs of the SSB index and the number of ROs of the SSB index indicated in the configuration parameter; or, the number of mappings indicates the number of ROs of the SSB index.

[0180] In some embodiments, the number of mappings between the SSB index and the preamble code is indicated based on the first indication information; the mapping times indicates the ratio between the number of preamble codes of the SSB index and the number of preamble codes of the SSB index indicated in the configuration parameter; or, the mapping times indicates the number of preamble codes of the SSB index.

[0181] In some embodiments, the multiple mapping times indicated in the first indication information are different, and / or the mapping times indicated in the first indication information is different from the default mapping times.

[0182] Among them, the multiple mapping times indicated in the first indication information are different, which may be applicable to the case where the mapping times of the SSB index indicated in the first indication information are validly transmitted; or applicable to the case where the SSB index indicated with a mapping time in the first indication information is a SSB index that is validly transmitted and the mapping time is not the specified mapping time. The mapping time indicated in the first indication information is different from the default mapping time, which may be applicable to the case where the SSB index indicated with a mapping time in the first indication information is a SSB index that is validly transmitted and the mapping time is not the specified mapping time.

[0183] In some embodiments, in one example, the terminal device may receive system information block 1 (SIB1) information from the network device, wherein the SIB1 information carries the first indication information. In another example, the terminal device may receive serving cell configuration public information from the network device, wherein the serving cell configuration public information carries the first indication information.

[0184] In some embodiments, based on the first indication information indicating the number of mappings of the SSB index to the random access opportunity RO, the terminal device can determine the binding relationship between the SSB index and the RO based on the first indication information; based on the first indication information indicating the number of mappings of the SSB index to the preamble, the terminal device can determine the binding relationship between the SSB index and the preamble based on the first indication information.

[0185] For a detailed description of step S3101, please refer to steps S2101 to S2102 in the embodiment shown in FIG2 , which will not be repeated here.

[0186] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0187] In the embodiments of the present disclosure, each step and its optional implementation method can also be implemented independently.

[0188] In this embodiment, the terminal device receives the first indication information from the network device; the first indication information indicates the mapping number of the SSB index; wherein, the terminal device can determine the binding relationship between the SSB and the random access opportunity RO and / or the preamble code according to the indicated mapping number of the SSB; in the case of an imbalance of terminal devices within the beam coverage area, the indication of different mapping times can be facilitated, thereby avoiding the access failure of terminal devices in part of the beam coverage area and improving communication efficiency.

[0189] FIG3B is a flow chart of a method for indicating a synchronization signal block SSB index according to an embodiment of the present disclosure. As shown in FIG3B , the embodiment of the present disclosure relates to a method for indicating a synchronization signal block SSB index, which is used in a terminal device 101 and includes:

[0190] Step S3201, receiving the first indication information of the network device; the first indication information indicates the number of mappings between the SSB index and the RO; the number of mappings indicates the ratio between the number of ROs of the SSB index and the number of ROs of the SSB index indicated in the configuration parameters; or, the number of mappings indicates the number of ROs of the SSB index.

[0191] In some embodiments, the first indication information may include multiple bits or bit strings; wherein the value of each bit or bit string indicates the number of mappings between an SSB index and an RO.

[0192] In some embodiments, the first indication information may include at least one SSB index and the number of mappings of the SSB index, wherein the number of mappings of the SSB index, for example, the number of mappings of the SSB index to the RO.

[0193] In some embodiments, the SSB index indicated with the number of mappings in the first indication information is an SSB index that is effectively transmitted; or, the SSB index indicated with the number of mappings in the first indication information is an SSB index that is effectively transmitted and the number of mappings is not the specified number of mappings.

[0194] It should be noted that, when the SSB index indicated by the mapping count in the first indication information is a validly transmitted SSB index, in one example, the first indication information may include multiple bits or bit strings; wherein the value of each bit or bit string indicates the mapping count between an SSB index and an RO. In another example, the first indication information may include at least one SSB index and the mapping count between the SSB index and the RO.

[0195] Among them, when the SSB index indicated with the mapping number in the first indication information is an SSB index that is effectively transmitted and the mapping number is not the specified mapping number, the first indication information may include at least one SSB index and the mapping number of the SSB index and the RO.

[0196] In some embodiments, the multiple mapping times indicated in the first indication information are different, and / or the mapping times indicated in the first indication information is different from the default mapping times.

[0197] Among them, the multiple mapping times indicated in the first indication information are different, which may be applicable to the case where the mapping times of the SSB index indicated in the first indication information are validly transmitted; or applicable to the case where the SSB index indicated with a mapping time in the first indication information is a SSB index that is validly transmitted and the mapping time is not the specified mapping time. The mapping time indicated in the first indication information is different from the default mapping time, which may be applicable to the case where the SSB index indicated with a mapping time in the first indication information is a SSB index that is validly transmitted and the mapping time is not the specified mapping time.

[0198] In some embodiments, in one example, the terminal device may receive system information block 1 (SIB1) information from the network device, wherein the SIB1 information carries the first indication information. In another example, the terminal device may receive serving cell configuration public information from the network device, wherein the serving cell configuration public information carries the first indication information.

[0199] In some embodiments, based on the first indication information indicating the number of mappings of the SSB index and the random access opportunity RO, the terminal device can determine the binding relationship between the SSB index and the RO according to the first indication information.

[0200] For a detailed description of step S3201, please refer to steps S2101 to S2102 in the embodiment shown in FIG2 , which will not be repeated here.

[0201] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0202] In the embodiments of the present disclosure, each step and its optional implementation method can also be implemented independently.

[0203] In this embodiment, the terminal device receives the first indication information of the network device; the first indication information indicates the number of mappings of the SSB index and the RO; the number of mappings indicates the ratio between the number of ROs of the SSB index and the number of ROs of the SSB index indicated in the configuration parameters; or, the number of mappings indicates the number of ROs of the SSB index; wherein, the terminal device can determine the binding relationship between the SSB and the RO based on the indicated number of mappings of the SSB and the RO; in the case of an imbalance of terminal devices within the beam coverage area, the indication of different mapping times can be facilitated, thereby avoiding the access failure of terminal devices in part of the beam coverage area and improving communication efficiency.

[0204] FIG3C is a flow chart of a method for indicating a synchronization signal block SSB index according to an embodiment of the present disclosure. As shown in FIG3C , the embodiment of the present disclosure relates to a method for indicating a synchronization signal block SSB index, which is used in a terminal device 101 and includes:

[0205] Step S3301, receiving the first indication information of the network device; the first indication information indicates the number of mappings of the SSB index and the preamble code; the number of mappings indicates the ratio between the number of preamble codes of the SSB index and the number of preamble codes of the SSB index indicated in the configuration parameters; or, the number of mappings indicates the number of preamble codes of the SSB index.

[0206] In some embodiments, the first indication information may include multiple bits or bit strings; wherein the value of each bit or bit string indicates the number of mappings of an SSB index to a preamble code.

[0207] In some embodiments, the first indication information may include at least one SSB index and the number of mappings of the SSB index, wherein the number of mappings of the SSB index, for example, the number of mappings of the SSB index to the preamble.

[0208] In some embodiments, the SSB index indicated with the number of mappings in the first indication information is an SSB index that is effectively transmitted; or, the SSB index indicated with the number of mappings in the first indication information is an SSB index that is effectively transmitted and the number of mappings is not the specified number of mappings.

[0209] It should be noted that, when the SSB index indicated by the mapping count in the first indication information is a validly transmitted SSB index, in one example, the first indication information may include multiple bits or bit strings; wherein the value of each bit or bit string indicates the mapping count of an SSB index to a preamble. In another example, the first indication information may include at least one SSB index and the mapping count of the SSB index to the preamble.

[0210] In which, when the SSB index indicated with the mapping number in the first indication information is an SSB index that is effectively transmitted and the mapping number is not the specified mapping number, the first indication information may include at least one SSB index and the mapping number of the SSB index and the preamble code.

[0211] In some embodiments, the multiple mapping times indicated in the first indication information are different, and / or the mapping times indicated in the first indication information is different from the default mapping times.

[0212] Among them, the multiple mapping times indicated in the first indication information are different, which may be applicable to the case where the mapping times of the SSB index indicated in the first indication information are validly transmitted; or applicable to the case where the SSB index indicated with a mapping time in the first indication information is a SSB index that is validly transmitted and the mapping time is not the specified mapping time. The mapping time indicated in the first indication information is different from the default mapping time, which may be applicable to the case where the SSB index indicated with a mapping time in the first indication information is a SSB index that is validly transmitted and the mapping time is not the specified mapping time.

[0213] In some embodiments, in one example, the terminal device may receive system information block 1 (SIB1) information from the network device, wherein the SIB1 information carries the first indication information. In another example, the terminal device may receive serving cell configuration public information from the network device, wherein the serving cell configuration public information carries the first indication information.

[0214] In some embodiments, based on the first indication information indicating the number of mappings of the SSB index and the preamble, the terminal device can determine the binding relationship between the SSB index and the preamble based on the first indication information.

[0215] For a detailed introduction to step S3301, please refer to steps S2101 to S2102 in the embodiment shown in FIG2 , which will not be repeated here.

[0216] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0217] In the embodiments of the present disclosure, each step and its optional implementation method can also be implemented independently.

[0218] In this embodiment, the terminal device receives first indication information from the network device; the first indication information indicates the number of mappings of the SSB index and the preamble code; the mapping number indicates the ratio between the number of preamble codes of the SSB index and the number of preamble codes of the SSB index indicated in the configuration parameters; or, the mapping number indicates the number of preamble codes of the SSB index; wherein, the terminal device can determine the binding relationship between the SSB and the preamble code according to the indicated mapping number of the SSB; in the case of an imbalance of terminal devices within the beam coverage area, the indication of different mapping numbers can be facilitated, thereby avoiding the access failure of terminal devices in part of the beam coverage area and improving communication efficiency.

[0219] FIG3D is a flow chart of a method for indicating a synchronization signal block SSB index according to an embodiment of the present disclosure. As shown in FIG3D , the embodiment of the present disclosure relates to a method for indicating a synchronization signal block SSB index, which is used in a terminal device 101 and includes:

[0220] Step S3401, receiving first indication information from a network device; the first indication information indicates the number of mappings between the SSB index and the RO; and / or, the first indication information indicates the number of mappings between the SSB index and the preamble code.

[0221] In some embodiments, the first indication information may include multiple bits or bit strings; wherein the value of each bit or bit string indicates the number of mappings of an SSB index. The value of each bit or bit string may indicate the number of mappings of an SSB index to an RO, or the number of mappings of an SSB index to a preamble.

[0222] In some embodiments, the first indication information may include at least one SSB index and the number of mappings of the SSB index, wherein the number of mappings of the SSB index may include, for example, the number of mappings of the SSB index to the RO and / or the number of mappings of the SSB index to the preamble.

[0223] In some embodiments, the SSB index indicated with the number of mappings in the first indication information is an SSB index that is effectively transmitted; or, the SSB index indicated with the number of mappings in the first indication information is an SSB index that is effectively transmitted and the number of mappings is not the specified number of mappings.

[0224] In some embodiments, the number of mappings between the SSB index and the RO is indicated based on the first indication information; the number of mappings indicates the ratio between the number of ROs of the SSB index and the number of ROs of the SSB index indicated in the configuration parameter; or, the number of mappings indicates the number of ROs of the SSB index.

[0225] In some embodiments, the number of mappings of the SSB index and the preamble code is indicated based on the first indication information; the number of mappings indicates the ratio between the number of preamble codes of the SSB index and the number of preamble codes of the SSB index indicated in the configuration parameter; or, the number of mappings indicates the number of preamble codes of the SSB index.

[0226] In some embodiments, the multiple mapping times indicated in the first indication information are different, and / or the mapping times indicated in the first indication information is different from the default mapping times.

[0227] In some embodiments, in one example, the terminal device may receive system information block 1 (SIB1) information from the network device, wherein the SIB1 information carries the first indication information. In another example, the terminal device may receive serving cell configuration public information from the network device, wherein the serving cell configuration public information carries the first indication information.

[0228] Step S3402: Based on the first indication information indicating the number of mappings of the SSB index to the random access opportunity RO, the binding relationship between the SSB index and the RO is determined according to the first indication information; and / or, based on the first indication information indicating the number of mappings of the SSB index to the preamble, the binding relationship between the SSB index and the preamble is determined according to the first indication information.

[0229] For a detailed description of steps S3401 and S3402, reference may be made to steps S2101 and S2102 in the embodiment shown in FIG2 , which will not be repeated here.

[0230] The method for indicating the synchronization signal block SSB index involved in the embodiments of the present disclosure may include at least one of steps S3401 and S3402. For example, step S3401 may be implemented as an independent embodiment, step S3402 may be implemented as an independent embodiment, etc., but is not limited thereto.

[0231] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0232] In the embodiments of the present disclosure, each step and its optional implementation method can also be implemented independently.

[0233] In this embodiment, the terminal device receives the first indication information of the network device; the first indication information indicates the number of mappings of the SSB index and the RO; and / or, the first indication information indicates the number of mappings of the SSB index and the preamble; based on the first indication information indicating the number of mappings of the SSB index and the random access opportunity RO, the binding relationship between the SSB index and the RO is determined according to the first indication information; and / or, based on the first indication information indicating the number of mappings of the SSB index and the preamble, the binding relationship between the SSB index and the preamble is determined according to the first indication information; in the case of an imbalance of terminal devices within the beam coverage area, the indication of different mapping times can be facilitated, thereby avoiding the access failure of terminal devices in part of the beam coverage area and improving communication efficiency.

[0234] FIG4A is a flow chart of a method for indicating a synchronization signal block SSB index according to an embodiment of the present disclosure. As shown in FIG4A , an embodiment of the present disclosure relates to a method for indicating a synchronization signal block SSB index, which is used in a network device 102 and includes:

[0235] Step S4101, send the first indication information; the first indication information indicates the number of mapping times of the SSB index.

[0236] In some embodiments, the first indication information may indicate the number of mappings between the SSB index and the random access opportunity RO; and / or the first indication information may indicate the number of mappings between the SSB index and the preamble. The number of mappings between the SSB index and the random access opportunity RO is used by the terminal device to determine the binding relationship between the SSB index and the RO; the number of mappings between the SSB index and the preamble is used by the terminal device to determine the binding relationship between the SSB index and the preamble.

[0237] In some embodiments, the first indication information may include multiple bits or bit strings; wherein the value of each bit or bit string indicates the number of mappings of an SSB index. The value of each bit or bit string may indicate the number of mappings of an SSB index to an RO, or the number of mappings of an SSB index to a preamble.

[0238] In some embodiments, the first indication information may include at least one SSB index and the number of mappings of the SSB index, wherein the number of mappings of the SSB index may include, for example, the number of mappings of the SSB index to the RO and / or the number of mappings of the SSB index to the preamble.

[0239] In some embodiments, the SSB index indicated with the number of mappings in the first indication information is an SSB index that is effectively transmitted; or, the SSB index indicated with the number of mappings in the first indication information is an SSB index that is effectively transmitted and the number of mappings is not the specified number of mappings.

[0240] It should be noted that, when the SSB index indicated by the first indication information with the number of mappings is a validly transmitted SSB index, in one example, the first indication information may include multiple bits or bit strings; wherein the value of each bit or bit string indicates the number of mappings of an SSB index. In another example, the first indication information may include at least one SSB index and the number of mappings of the SSB index.

[0241] In which, when the SSB index indicated with the mapping number in the first indication information is an SSB index that is effectively transmitted and the mapping number is not the specified mapping number, the first indication information may include at least one SSB index and the mapping number of the SSB index.

[0242] In some embodiments, the number of mappings between the SSB index and the RO is indicated based on the first indication information; the number of mappings indicates the ratio between the number of ROs of the SSB index and the number of ROs of the SSB index indicated in the configuration parameter; or, the number of mappings indicates the number of ROs of the SSB index.

[0243] In some embodiments, the number of mappings of the SSB index and the preamble code is indicated based on the first indication information; the number of mappings indicates the ratio between the number of preamble codes of the SSB index and the number of preamble codes of the SSB index indicated in the configuration parameter; or, the number of mappings indicates the number of preamble codes of the SSB index.

[0244] In some embodiments, the multiple mapping times indicated in the first indication information are different, and / or the mapping times indicated in the first indication information is different from the default mapping times.

[0245] Among them, the multiple mapping times indicated in the first indication information are different, which may be applicable to the case where the mapping times of the SSB index indicated in the first indication information are validly transmitted; or applicable to the case where the SSB index indicated with a mapping time in the first indication information is a SSB index that is validly transmitted and the mapping time is not the specified mapping time. The mapping time indicated in the first indication information is different from the default mapping time, which may be applicable to the case where the SSB index indicated with a mapping time in the first indication information is a SSB index that is validly transmitted and the mapping time is not the specified mapping time.

[0246] In some embodiments, in one example, the network device may send system information block 1 SIB1 information; the SIB1 information carries the first indication information; or, send serving cell configuration public information; the serving cell configuration public information carries the first indication information.

[0247] For a detailed description of step S4101, please refer to steps S2101 to S2102 in the embodiment shown in FIG2 , which will not be repeated here.

[0248] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0249] In the embodiments of the present disclosure, each step and its optional implementation method can also be implemented independently.

[0250] In this embodiment, the network device sends a first indication message; the first indication message indicates the mapping number of the SSB index; wherein the terminal device determines the binding relationship between the SSB and the random access opportunity RO and / or the preamble code according to the mapping number of the SSB indicated in the received first indication message; in the case of an imbalance of terminal devices within the beam coverage area, the indication of different mapping times can be facilitated, thereby avoiding the access failure of terminal devices in part of the beam coverage area and improving communication efficiency.

[0251] FIG4B is a flow chart of a method for indicating a synchronization signal block SSB index according to an embodiment of the present disclosure. As shown in FIG4B , the embodiment of the present disclosure relates to a method for indicating a synchronization signal block SSB index, which is used in a network device 102 and includes:

[0252] Step S4201, sending a first indication message; the first indication message indicates the number of mappings between the SSB index and the RO; the number of mappings indicates the ratio between the number of ROs of the SSB index and the number of ROs of the SSB index indicated in the configuration parameter; or, the number of mappings indicates the number of ROs of the SSB index.

[0253] In some embodiments, the first indication information may include multiple bits or bit strings; wherein the value of each bit or bit string indicates the number of mappings between an SSB index and an RO.

[0254] In some embodiments, the first indication information may include at least one SSB index and the number of mappings of the SSB index, wherein the number of mappings of the SSB index, for example, the number of mappings of the SSB index to the RO.

[0255] In some embodiments, the SSB index indicated with the number of mappings in the first indication information is an SSB index that is effectively transmitted; or, the SSB index indicated with the number of mappings in the first indication information is an SSB index that is effectively transmitted and the number of mappings is not the specified number of mappings.

[0256] It should be noted that, when the SSB index with the mapping count indicated in the first indication information is a validly transmitted SSB index, in one example, the first indication information may include multiple bits or bit strings; wherein the value of each bit or bit string indicates the mapping count between an SSB index and an RO. In another example, the first indication information may include at least one SSB index and the mapping count between the SSB index and the RO.

[0257] Among them, when the SSB index indicated with the mapping number in the first indication information is an SSB index that is effectively transmitted and the mapping number is not the specified mapping number, the first indication information may include at least one SSB index and the mapping number of the SSB index and the RO.

[0258] In some embodiments, the multiple mapping times indicated in the first indication information are different, and / or the mapping times indicated in the first indication information is different from the default mapping times.

[0259] Among them, the multiple mapping times indicated in the first indication information are different, which may be applicable to the case where the mapping times of the SSB index indicated in the first indication information are validly transmitted; or applicable to the case where the SSB index indicated with a mapping time in the first indication information is a SSB index that is validly transmitted and the mapping time is not the specified mapping time. The mapping time indicated in the first indication information is different from the default mapping time, which may be applicable to the case where the SSB index indicated with a mapping time in the first indication information is a SSB index that is validly transmitted and the mapping time is not the specified mapping time.

[0260] In some embodiments, in one example, the network device may send system information block 1 (SIB1) information, which carries the first indication information. In another example, the network device may send serving cell configuration common information, which carries the first indication information.

[0261] For a detailed description of step S4201, please refer to steps S2101 to S2102 in the embodiment shown in FIG2 , which will not be repeated here.

[0262] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0263] In the embodiments of the present disclosure, each step and its optional implementation method can also be implemented independently.

[0264] In this embodiment, the network device sends a first indication message; the first indication message indicates the number of mappings between the SSB index and the RO; the number of mappings indicates the ratio between the number of ROs of the SSB index and the number of ROs of the SSB index indicated in the configuration parameters; or, the number of mappings indicates the number of ROs of the SSB index; so that the terminal device can determine the binding relationship between the SSB and the RO based on the indicated number of mappings between the SSB and the RO; in the case of an imbalance of terminal devices within the beam coverage area, the indication of different mapping times can be facilitated, thereby avoiding the access failure of terminal devices in part of the beam coverage area and improving communication efficiency.

[0265] FIG4C is a flow chart of a method for indicating a synchronization signal block SSB index according to an embodiment of the present disclosure. As shown in FIG4C , the embodiment of the present disclosure relates to a method for indicating a synchronization signal block SSB index, which is used in a network device 102 and includes:

[0266] Step S4301, sending a first indication message; the first indication message indicates the number of mappings between the SSB index and the preamble code; the number of mappings indicates the ratio between the number of preamble codes of the SSB index and the number of preamble codes of the SSB index indicated in the configuration parameter; or, the number of mappings indicates the number of preamble codes of the SSB index.

[0267] In some embodiments, the first indication information may include multiple bits or bit strings; wherein the value of each bit or bit string indicates the number of mappings of an SSB index to a preamble code.

[0268] In some embodiments, the first indication information may include at least one SSB index and the number of mappings of the SSB index, wherein the number of mappings of the SSB index, for example, the number of mappings of the SSB index to the preamble.

[0269] In some embodiments, the SSB index indicated with the number of mappings in the first indication information is an SSB index that is effectively transmitted; or, the SSB index indicated with the number of mappings in the first indication information is an SSB index that is effectively transmitted and the number of mappings is not the specified number of mappings.

[0270] It should be noted that, when the SSB index with the mapping count indicated in the first indication information is a validly transmitted SSB index, in one example, the first indication information may include multiple bits or bit strings; wherein the value of each bit or bit string indicates the mapping count of an SSB index to a preamble. In another example, the first indication information may include at least one SSB index and the mapping count of the SSB index to the preamble.

[0271] In which, when the SSB index indicated with the mapping number in the first indication information is an SSB index that is effectively transmitted and the mapping number is not the specified mapping number, the first indication information may include at least one SSB index and the mapping number of the SSB index and the preamble code.

[0272] In some embodiments, the multiple mapping times indicated in the first indication information are different, and / or the mapping times indicated in the first indication information is different from the default mapping times.

[0273] Among them, the multiple mapping times indicated in the first indication information are different, which may be applicable to the case where the mapping times of the SSB index indicated in the first indication information are validly transmitted; or applicable to the case where the SSB index indicated with a mapping time in the first indication information is a SSB index that is validly transmitted and the mapping time is not the specified mapping time. The mapping time indicated in the first indication information is different from the default mapping time, which may be applicable to the case where the SSB index indicated with a mapping time in the first indication information is a SSB index that is validly transmitted and the mapping time is not the specified mapping time.

[0274] In some embodiments, in one example, the network device may send system information block 1 (SIB1) information, which carries the first indication information. In another example, the network device may send serving cell configuration common information, which carries the first indication information.

[0275] For a detailed introduction to step S4301, please refer to steps S2101 to S2102 in the embodiment shown in FIG2 , which will not be repeated here.

[0276] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0277] In the embodiments of the present disclosure, each step and its optional implementation method can also be implemented independently.

[0278] In this embodiment, the network device sends a first indication message; the first indication message indicates the number of mappings between the SSB index and the preamble code; the mapping number indicates the ratio between the number of preamble codes of the SSB index and the number of preamble codes of the SSB index indicated in the configuration parameters; or, the mapping number indicates the number of preamble codes of the SSB index; so that the terminal device can determine the binding relationship between the SSB and the preamble code based on the indicated mapping number of the SSB; in the case of an imbalance of terminal devices within the beam coverage area, the indication of different mapping numbers can be facilitated, thereby avoiding the access failure of terminal devices in part of the beam coverage area and improving communication efficiency.

[0279] FIG5 is an interactive diagram of a method for indicating a synchronization signal block SSB index according to an embodiment of the present disclosure. As shown in FIG5 , an embodiment of the present disclosure relates to a method for indicating a synchronization signal block SSB index, which is used in a communication system, including: a terminal device 101 and a network device 102, and the method includes:

[0280] Step S5101, the network device sends a first indication message to the terminal device; the first indication message indicates the number of mappings of the SSB index.

[0281] Step S5102: The terminal device determines the binding relationship between the SSB index and the random access opportunity RO based on the first indication information, and / or determines the binding relationship between the SSB index and the preamble code.

[0282] For a detailed description of steps S5101 and S5102, please refer to the above embodiment description.

[0283] The method for indicating the synchronization signal block SSB index involved in the embodiment of the present disclosure may include at least one of steps S5101 and S5102. For example, step S5101 can be implemented as an independent embodiment, step S5102 can be implemented as an independent embodiment, etc., but is not limited thereto.

[0284] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0285] In the embodiments of the present disclosure, each step and its optional implementation method can also be implemented independently.

[0286] In this embodiment, the network device sends a first indication message to the terminal device; the first indication message indicates the number of mappings of the SSB index; the terminal device determines the binding relationship between the SSB index and the random access opportunity RO according to the first indication message, and / or determines the binding relationship between the SSB index and the preamble code; wherein, the indication of the number of mappings of the SSB can facilitate the indication of different mapping times when the terminal devices in the beam coverage area are unbalanced, thereby avoiding the access failure of terminal devices in part of the beam coverage area and improving communication efficiency.

[0287] The following is an exemplary introduction to the above method.

[0288] The present disclosure is used to implement the indication of different mapping times when the terminal devices are unevenly distributed within the beam coverage area, thereby avoiding the situation where the terminal devices in the partial beam coverage area fail to access and improving the communication efficiency. The optional implementation scheme is as follows:

[0289] An embodiment of the present disclosure relates to a method for indicating a synchronization signal block (SSB) index, the method comprising:

[0290] Point 1: The UE receives indication information sent by the base station (network device), which is used by the UE to determine the binding relationship between the RO and the SSB index.

[0291] Furthermore, the information may indicate that the mapping times of a specific SSB index(s) and RO are different from those of other SSB index(s).

[0292] Example 1: ssb-PositionsInBurst uses 0 or 1 to indicate whether the SSB is transmitted. The indication information indicates the number of times each SSB is bound to the RO in one mapping cycle for each valid transmitted SSB index (i.e., the SSB for which ssb-PositionsInBurst indicates 1). For example, if the number of valid transmitted SSBs is 4, and each SSB index is mapped to the RO at most 4 times (the number is indicated by 2 bits), then the number of bits in the indication information is 4*log(4,2)=8 bits.

[0293] The maximum number of mappings may be determined by a predefined number or a number indicated by a base station. The base station indication information may be SIB1 information or ServingCellConfigCommon, including the number of mappings of effectively transmitted SSBs and ROs.

[0294] Example 1 is as follows:

[0295] ssb-PositionsInBurst=1111, the maximum number of repeated mappings is 4, which is predetermined. The indication information is 00, 00, 00, 01, indicating that SSB#0 to SSB#3 are mapped to RO in the order of 1 time, 1 time, 1 time, and 2 times.

[0296] ·Example 2: 0 or 1 is used in ssb-PositionsInBurst to indicate whether the SSB is transmitted. The indication information indicates the number of RO bindings for each validly transmitted ssb index (i.e., the SSB indicated by ssb-PositionsInBurst is 1). For example, if the number of validly transmitted SSBs is 4, the indication information is SSB index + number of transmissions. If the SSB index is not indicated, the default mapping number is 1.

[0297] In some embodiments, assuming that msg1-FDM = one and ssb-perRACH-OccasionAndCB-PreamblesPerSSB = one, combined with the definitions of the above two parameters, it can be determined that one SSB index corresponds to one RO. Assume that the SSB burst set includes SSB#0 to SSB#3, that is, it includes 4 SSBs. In this case, the number of mappings between each SSB and RO is 1, and the mapping relationship 1 between RO and SSB can be shown in Figure 6A. In Figure 6A, RO#1 corresponds to SSB#0; RO#2 corresponds to SSB#1; RO#3 corresponds to SSB#2; RO#4 corresponds to SSB#3; RO#5 corresponds to SSB#0; RO#6 corresponds to SSB#1; ...

[0298] In some embodiments, assume that the first indication information sent by the network device to the terminal device indicates the number of mappings between SSBs and ROs, where the number of mappings between SSB#0 to SSB#2 and the RO is 1, and the number of mappings between SSB#3 and the RO is 2. The resulting mapping relationship 2 between ROs and SSBs is shown in FIG6B . In FIG6B , RO#1 corresponds to SSB#0; RO#2 corresponds to SSB#1; RO#3 corresponds to SSB#2; RO#4 corresponds to SSB#3; RO#5 corresponds to SSB#3; RO#6 corresponds to SSB#0; and so on.

[0299] Among them, in Figure 6A, SSB#3 corresponds to one RO, RO#4; in Figure 6B, SSB#3 corresponds to two ROs, RO#4 and RO#5; then, the number of ROs corresponding to SSB#3 increases. In the case of excessive number of terminal devices and high competition in the partial beam coverage area where SSB#3 is located, terminal device access failure can be avoided, thereby improving communication efficiency.

[0300] Point 2: The UE receives the indication information sent by the base station, which is used by the UE to determine the binding relationship between the preamble and the SSB index.

[0301] Furthermore, the information may indicate that the number of times a specific SSB index(s) and preamble are mapped is different from other SSB index(s).

[0302] Embodiment 1: 0 or 1 is used in ssb-PositionsInBurst to indicate whether the SSB is transmitted. The indication information indicates the number of available preambles for each validly transmitted SSB index (ie, the SSB indicated by ssb-PositionsInBurst as 1).

[0303] The number of available preambles is selected from the set of available numbers, such as {n4,n8,n12,n16,n20,n24,n28,n32}.

[0304] The number of available preambles varies depending on the ssb-perRACH-Occasion set. Generally, the more SSBs there are in each RO, for example, ssb-perRACH-Occasion = 8, the fewer preambles are available for each SSB.

[0305] When the base station sends the indication information to the UE, the UE shall ignore the CB-PreamblesPerSSB parameter in ssb-perRACH-OccasionAndCB-PreamblesPerSSB and instead determine the number of available preambles corresponding to each SSB index based on the indication information.

[0306] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal device in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., a RAN) in any of the above methods.

[0307] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0308] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned 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 a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit 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), etc.

[0309] FIG7A is a schematic diagram of the structure of a terminal device proposed in an embodiment of the present disclosure. As shown in FIG7A , the terminal device 7100 may include: at least one of a transceiver module 7101 and a processing module 7102. The terminal device 7100 may include:

[0310] The transceiver module 7101 is used to receive first indication information from a network device; the first indication information indicates the number of mappings of the SSB index.

[0311] Optionally, the first indication information indicates the number of mappings between the SSB index and the random access opportunity RO; and / or, the first indication information indicates the number of mappings between the SSB index and the preamble code.

[0312] Optionally, the first indication information includes multiple bits or bit strings; wherein the value of each bit or bit string indicates the number of mappings of an SSB index.

[0313] Optionally, the first indication information includes at least one SSB index and the number of mappings of the SSB index.

[0314] Optionally, the SSB index indicated with the number of mappings in the first indication information is an SSB index that is effectively transmitted; or, the SSB index indicated with the number of mappings in the first indication information is an SSB index that is effectively transmitted and the number of mappings is not the default number of mappings.

[0315] Optionally, the number of mappings between the SSB index and the RO is indicated based on the first indication information; the number of mappings indicates the ratio between the number of ROs of the SSB index and the number of ROs of the SSB index indicated in the configuration parameters; or, the number of mappings indicates the number of ROs of the SSB index.

[0316] Optionally, the number of mappings of the SSB index and the preamble code is indicated based on the first indication information; the number of mappings indicates the ratio between the number of preamble codes of the SSB index and the number of preamble codes of the SSB index indicated in the configuration parameters; or, the number of mappings indicates the number of preamble codes of the SSB index.

[0317] Optionally, the multiple mapping times indicated in the first indication information are different, and / or the mapping times indicated in the first indication information is different from the default mapping times.

[0318] Optionally, the transceiver module 7101 is specifically used to receive the system information block 1 SIB1 information of the network device; the SIB1 information carries the first indication information; or, to receive the service cell configuration public information of the network device; the service cell configuration public information carries the first indication information.

[0319] Optionally, the terminal device also includes: a processing module 7102, which is used to indicate the number of mappings of the SSB index and the random access opportunity RO based on the first indication information, and determine the binding relationship between the SSB index and the RO according to the first indication information; and / or, to indicate the number of mappings of the SSB index and the preamble based on the first indication information, and determine the binding relationship between the SSB index and the preamble according to the first indication information.

[0320] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0321] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be interchangeable with the processor.

[0322] FIG7B is a schematic diagram of the structure of a network device proposed in an embodiment of the present disclosure. As shown in FIG7B , the network device 7200 may include: at least one of a transceiver module 7201 and a processing module 7202. The network device 7200 may include:

[0323] The transceiver module 7201 is used to send first indication information; the first indication information indicates the number of mapping times of the SSB index.

[0324] Optionally, the first indication information indicates the number of mappings between the SSB index and the random access opportunity RO; and / or, the first indication information indicates the number of mappings between the SSB index and the preamble code.

[0325] Optionally, the first indication information includes multiple bits or bit strings; wherein the value of each bit or bit string indicates the number of mappings of an SSB index.

[0326] Optionally, the first indication information includes at least one SSB index and the number of mappings of the SSB index.

[0327] Optionally, the SSB index indicated with the number of mappings in the first indication information is an SSB index that is effectively transmitted; or, the SSB index indicated with the number of mappings in the first indication information is an SSB index that is effectively transmitted and the number of mappings is not the default number of mappings.

[0328] Optionally, the number of mappings between the SSB index and the RO is indicated based on the first indication information; the number of mappings indicates the ratio between the number of ROs of the SSB index and the number of ROs of the SSB index indicated in the configuration parameters; or, the number of mappings indicates the number of ROs of the SSB index.

[0329] Optionally, the number of mappings of the SSB index and the preamble code is indicated based on the first indication information; the number of mappings indicates the ratio between the number of preamble codes of the SSB index and the number of preamble codes of the SSB index indicated in the configuration parameters; or, the number of mappings indicates the number of preamble codes of the SSB index.

[0330] Optionally, the multiple mapping times indicated in the first indication information are different, and / or the mapping times indicated in the first indication information is different from the default mapping times.

[0331] Optionally, the transceiver module 7201 is specifically used to send system information block 1 SIB1 information; the SIB1 information carries the first indication information; or, send service cell configuration public information; the service cell configuration public information carries the first indication information.

[0332] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0333] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be interchangeable with the processor.

[0334] Figure 8A is a schematic diagram of the structure of a communication device 8100 proposed in an embodiment of the present disclosure. Communication device 8100 can be a terminal device or a network device, or a chip, chip system, or processor that supports a terminal device in implementing any of the above methods. It can also be a chip, chip system, or processor that supports a network device in implementing any of the above methods. Communication device 8100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0335] As shown in Figure 8A, the communication device 8100 includes one or more processors 8101. The processor 8101 can be a general-purpose processor or a dedicated 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 program data. The communication device 8100 is used to perform any of the above methods.

[0336] In some embodiments, the communication device 8100 further includes one or more memories 8102 for storing instructions. Optionally, all or part of the memories 8102 may be located outside the communication device 8100.

[0337] In some embodiments, the communication device 8100 further includes one or more transceivers 8103. When the communication device 8100 includes one or more transceivers 8103, the transceiver 8103 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2101, step S3101, step S3201, step S3301, step S3401, step S4101, step S4201, step S4301, and step S5101, but not limited thereto), and the processor 8101 performs the other steps (for example, step S2102, step S3402, and step S5102).

[0338] In some embodiments, a transceiver may include a receiver and / or a transmitter. The receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0339] In some embodiments, the communication device 8100 may include one or more interface circuits 8104. Optionally, the interface circuit 8104 is connected to the memory 8102. The interface circuit 8104 may be configured to receive signals from the memory 8102 or other devices, and may be configured to send signals to the memory 8102 or other devices. For example, the interface circuit 8104 may read instructions stored in the memory 8102 and send the instructions to the processor 8101.

[0340] The communication device 8100 described in the above embodiments may be a terminal device, a network device, or a third entity, 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 may not be limited by FIG. 8A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0341] FIG8B is a schematic diagram of the structure of a chip 8200 according to an embodiment of the present disclosure. If the communication device 8100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 8200 shown in FIG8B , but the present disclosure is not limited thereto.

[0342] The chip 8200 includes one or more processors 8201 , and the chip 8200 is configured to execute any of the above methods.

[0343] In some embodiments, the chip 8200 further includes one or more interface circuits 8202. Optionally, the interface circuit 8202 is connected to the memory 8203. The interface circuit 8202 can be used to receive signals from the memory 8203 or other devices, and can be used to send signals to the memory 8203 or other devices. For example, the interface circuit 8202 can read instructions stored in the memory 8203 and send the instructions to the processor 8201.

[0344] In some embodiments, the interface circuit 8202 executes at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2101, step S3101, step S3201, step S3301, step S3401, step S4101, step S4201, step S4301, step S5101, but not limited to these), and the processor 8201 executes other steps (for example, step S2102, step S3402, step S5102).

[0345] In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.

[0346] In some embodiments, the chip 8200 further includes one or more memories 8203 for storing instructions. Alternatively, all or part of the memories 8203 may be outside the chip 8200.

[0347] The present disclosure also proposes a storage medium having instructions stored thereon, which, when executed on the communication device 8100, causes the communication device 8100 to execute any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto, and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto, and may also be a temporary storage medium.

[0348] The present disclosure also provides a program product, which, when executed by the communication device 8100, enables the communication device 8100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0349] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

Claims

1. A method for indicating a synchronization signal block (SSB) index, characterized in that: The method is executed by a terminal device, and includes: Receive first indication information from a network device; the first indication information indicates the number of mappings of the SSB index.

2. The method according to claim 1, characterized in that The first indication information indicates the number of mappings between the SSB index and the random access opportunity RO; and / or, The first indication information indicates the number of mappings of the SSB index and the preamble code.

3. The method according to claim 2, characterized in that The first indication information includes multiple bits or bit strings; wherein the value of each bit or bit string indicates the number of mappings of an SSB index.

4. The method according to claim 2, characterized in that The first indication information includes at least one SSB index and the number of mappings of the SSB index.

5. The method according to claim 2, characterized in that The SSB index indicated by the mapping number in the first indication information is the SSB index of valid transmission; or, The SSB index indicated with a mapping number in the first indication information is an SSB index that is effectively transmitted and the mapping number is not the default mapping number.

6. The method according to claim 2 or 5, characterized in that Indicating the number of mappings between the SSB index and the RO based on the first indication information; the mapping number indicates a ratio between the number of ROs of the SSB index and the number of ROs of the SSB index indicated in the configuration parameter; or, The mapping times indicates the number of ROs indexed by the SSB.

7. The method according to claim 2 or 5, characterized in that Indicating the number of mappings between the SSB index and the preamble based on the first indication information; the mapping number indicating a ratio between the number of preambles of the SSB index and the number of preambles of the SSB index indicated in the configuration parameter; or, The mapping times indicates the number of preamble codes of the SSB index.

8. The method according to claim 1, characterized in that The multiple mapping times indicated in the first indication information are different, and / or the mapping times indicated in the first indication information is different from the default mapping times.

9. The method according to claim 1 or 2, characterized in that The receiving first indication information of the network device includes: receiving system information block 1 SIB1 information of the network device; the SIB1 information carries the first indication information; or, Receive the serving cell configuration public information of the network device; the serving cell configuration public information carries the first indication information.

10. The method according to claim 2, characterized in that The method further comprises: Based on the number of mappings between the SSB index and the random access opportunity RO indicated by the first indication information, determining a binding relationship between the SSB index and the RO according to the first indication information; and / or, Based on the number of mappings of the SSB index and the preamble indicated by the first indication information, the binding relationship between the SSB index and the preamble is determined according to the first indication information.

11. A method for indicating a synchronization signal block (SSB) index, characterized in that: The method is performed by a network device, and includes: Send a first indication message; the first indication message indicates the number of mappings of the SSB index.

12. The method according to claim 11, characterized in that The first indication information indicates the number of mappings between the SSB index and the random access opportunity RO; and / or, The first indication information indicates the number of mappings of the SSB index and the preamble code.

13. The method according to claim 12, characterized in that The first indication information includes multiple bits or bit strings; wherein the value of each bit or bit string indicates the number of mappings of an SSB index.

14. The method according to claim 12, characterized in that The first indication information includes at least one SSB index and the number of mappings of the SSB index.

15. The method according to claim 12, characterized in that The SSB index indicated by the mapping number in the first indication information is the SSB index of valid transmission; or, The SSB index indicated with a mapping number in the first indication information is an SSB index that is effectively transmitted and the mapping number is not the default mapping number.

16. The method according to claim 12 or 15, characterized in that Indicating the number of mappings between the SSB index and the RO based on the first indication information; the mapping number indicates a ratio between the number of ROs of the SSB index and the number of ROs of the SSB index indicated in the configuration parameter; or, The mapping times indicates the number of ROs indexed by the SSB.

17. The method according to claim 12 or 15, characterized in that Indicating the number of mappings between the SSB index and the preamble based on the first indication information; the mapping number indicating a ratio between the number of preambles of the SSB index and the number of preambles of the SSB index indicated in the configuration parameter; or, The mapping times indicates the number of preamble codes of the SSB index.

18. The method according to claim 11, characterized in that The multiple mapping times indicated in the first indication information are different, and / or the mapping times indicated in the first indication information is different from the default mapping times.

19. The method according to claim 11 or 12, characterized in that The sending of the first indication information includes: Sending system information block 1 SIB1 information; the SIB1 information carries the first indication information; or, Sending serving cell configuration public information; the serving cell configuration public information carries the first indication information.

20. A method for indicating a synchronization signal block (SSB) index, characterized in that: The method is performed by a communication system, the communication system including a network device and a terminal device, and the method includes: The network device sends first indication information to the terminal device; the first indication information indicates the number of mappings of the SSB index; The terminal device determines the binding relationship between the SSB index and the random access opportunity RO based on the first indication information, and / or determines the binding relationship between the SSB index and the preamble code.

21. A terminal device, characterized in that: include: a transceiver module, configured to receive first indication information from a network device; The first indication information indicates the number of mappings of the SSB index.

22. A network device, characterized in that: include: A transceiver module, configured to send first indication information; The first indication information indicates the number of mappings of the SSB index.

23. A terminal device, characterized in that: include: one or more processors; The terminal device is used to execute the method for indicating the synchronization signal block SSB index as described in any one of claims 1-10.

24. A network device, characterized in that: include: one or more processors; The network device is used to execute the method for indicating the synchronization signal block SSB index as described in any one of claims 11-19.

25. A communication system, characterized in that: include: Terminal equipment and network equipment; In which, the terminal device is configured to execute the method for indicating the SSB index of the synchronization signal block described in any one of claims 1-10; the network device is configured to execute the method for indicating the SSB index of the synchronization signal block described in any one of claims 11-19.

26. A storage medium storing instructions, characterized in that: When the instruction is executed on the communication device, the communication device executes the method for indicating the synchronization signal block SSB index as described in any one of claims 1-10.

27. A storage medium storing instructions, characterized in that: When the instruction is executed on the communication device, the communication device executes the method for indicating the synchronization signal block SSB index as described in any one of claims 11-19.

28. A program product, characterized in that It includes a computer program, which, when executed by a communication device, enables the communication device to perform the method for indicating the synchronization signal block SSB index as described in any one of claims 1 to 10.

29. A program product, characterized in that It includes a computer program, which, when executed by a communication device, enables the communication device to perform the method for indicating the synchronization signal block SSB index as described in any one of claims 11 to 19.

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