Communication methods, network device, terminal, communication device, communication system, computer program product, and storage medium

Abstract

Provided in the embodiments of the present disclosure are communication methods, a network device, a terminal, a communication device, a communication system, a computer program product, and a storage medium. A communication method comprises: sending first information to a terminal, the first information being used for indicating a mapping mode used between random access channel occasions (ROs) and synchronization signal blocks (SSBs), wherein the ROs include at least two different types of ROs, and the mapping mode includes at least one of the following: a first mapping mode, which is an independent mapping mode in which the different types of ROs respectively establish a mapping relationship with the SSBs; and a second mapping mode, which is a joint mapping mode in which the different types of ROs jointly establish a mapping relationship with the SSBs. The communication mechanism in the technical solution provided in the embodiments of the present disclosure can be adapted to communication scenarios following the introduction of SBFD.

Description

Communication methods, network devices, terminals, communication equipment, communication systems, computer program products, and storage media Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a communication method, network device, terminal, communication equipment, communication system, computer program product, and storage medium. Background Technology

[0002] In the field of communication technology, Subband Full Duplex (SBFD) is a new duplex standard researched by the 3rd Generation Partnership Project (3GPP). This standard achieves full-duplex communication at the base station side by dividing a single carrier of Time Division Duplexing (TDD) into non-overlapping uplink or downlink subbands and transmitting and receiving data on the subbands separately.

[0003] Summary of the Invention

[0004] After the introduction of SBFD, the communication mechanism needs to be adjusted.

[0005] According to a first aspect of the present disclosure, a communication method is provided, the method being executed by a network device, the method comprising:

[0006] Send the first message to the terminal;

[0007] The first information is used to indicate the mapping method between the random access channel timing (RO) and the synchronization signal block (SSB); the RO includes at least two different types of ROs; the mapping method includes at least one of the following:

[0008] The first mapping method is an independent mapping method that establishes a mapping relationship between different types of RO and SSB respectively;

[0009] The second mapping method is a joint method that establishes a mapping relationship between different types of ROs and SSBs.

[0010] According to a second aspect of the present disclosure, a communication method is provided, the method being executed by a terminal, the method comprising:

[0011] Receive the first information sent by the network device;

[0012] The first information is used to indicate the mapping method between the random access channel timing (RO) and the synchronization signal block (SSB); the RO includes at least two different types of ROs; the mapping method includes at least one of the following:

[0013] The first mapping method is an independent mapping method that establishes a mapping relationship between different types of RO and SSB respectively;

[0014] The second mapping method is a joint mapping method that establishes a mapping relationship between different types of ROs and SSBs.

[0015] According to a third aspect of the present disclosure, a communication method is provided, the method comprising:

[0016] The network device sends the first information to the terminal;

[0017] The first information is used to indicate the mapping method between the random access channel timing (RO) and the synchronization signal block (SSB); the RO includes at least two different types of ROs; the mapping method includes at least one of the following:

[0018] The first mapping method is an independent mapping method that establishes a mapping relationship between different types of RO and SSB respectively;

[0019] The second mapping method is a joint mapping method that establishes a mapping relationship between different types of ROs and SSBs.

[0020] According to a fourth aspect of the present disclosure, a communication device is provided, the communication device being configured to perform the communication method described in the first or second aspect.

[0021] According to a fifth aspect of the present disclosure, a communication system is provided, wherein the communication system includes a network device and a terminal; the network device is configured to implement the method of the first aspect, and the terminal is configured to implement the method of the second aspect.

[0022] According to a sixth aspect of the present disclosure, a computer program product is provided, including a computer program or instructions, which, when executed by a processor, implement the steps of the method described in the first aspect and / or the second aspect.

[0023] According to a seventh aspect of the present disclosure, a storage medium is provided, wherein the storage medium stores instructions that, when executed on a communication device, cause the communication device to perform the methods provided in the first aspect and / or the second aspect.

[0024] The communication mechanism of the technical solution provided in this disclosure can be adapted to the communication mechanism after the introduction of SBFD.

[0025] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the embodiments of this disclosure. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings required for the description of the embodiments are introduced below. The following drawings are only some embodiments of this disclosure and do not impose specific limitations on the protection scope of this disclosure.

[0027] Figure 1a is a schematic diagram of a communication system architecture according to an exemplary embodiment;

[0028] Figure 1b is a schematic diagram of an SBFD according to an exemplary embodiment;

[0029] Figure 2a is a schematic diagram of a communication method flow according to an exemplary embodiment;

[0030] Figure 3a is a schematic diagram of a communication method flow according to an exemplary embodiment;

[0031] Figure 4a is a schematic diagram of a communication method flow according to an exemplary embodiment;

[0032] Figure 5a is a schematic diagram of a communication method flow according to an exemplary embodiment;

[0033] Figure 6a is a schematic diagram of a communication method flow according to an exemplary embodiment;

[0034] Figure 7a is a schematic diagram illustrating a mapping method according to an exemplary embodiment;

[0035] Figure 7b is a schematic diagram illustrating a mapping method according to an exemplary embodiment;

[0036] Figure 8a is a schematic diagram of the structure of a terminal according to an exemplary embodiment;

[0037] Figure 8b is a schematic diagram of the structure of a network device according to an exemplary embodiment;

[0038] Figure 9a is a schematic diagram of the structure of a UE according to an exemplary embodiment;

[0039] Figure 9b is a schematic diagram of the structure of a communication device according to an exemplary embodiment. Detailed Implementation

[0040] This disclosure provides a communication method, network device, terminal, communication equipment, communication system, computer program product, and storage medium.

[0041] In a first aspect, embodiments of this disclosure provide a communication method, the method being executed by a network device, the method comprising:

[0042] Send the first message to the terminal;

[0043] The first information is used to indicate the mapping method between the random access channel timing (RO) and the synchronization signal block (SSB); the RO includes at least two different types of ROs; the mapping method includes at least one of the following:

[0044] The first mapping method is an independent mapping method that establishes a mapping relationship between different types of RO and SSB respectively;

[0045] The second mapping method is a joint mapping method that establishes a mapping relationship between different types of ROs and SSBs.

[0046] In the above embodiments, since the first information indicates the mapping method between the random access channel timing (RO) and the synchronization signal block (SSB), after the network device sends the first information to the terminal, the terminal can clearly determine the mapping method to be used based on the first information and communicate based on the determined mapping method, making the communication more reliable.

[0047] In conjunction with some embodiments of the first aspect, in some embodiments, the RO includes a first type of RO and a second type of RO, wherein the first type of RO is a traditional legacy RO and the second type of RO is a sub-band full-duplex SBFD RO.

[0048] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0049] When the mapping method is the first mapping method, a mapping relationship between RO and SSB is established for at least two different types of RO in a first order;

[0050] The first order is the order of performing frequency domain mapping first and then time domain mapping.

[0051] In the above embodiments, a mapping relationship between RO and SSB can be established for at least two different types of RO in a first order, making the mapping mechanism more flexible.

[0052] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0053] When the mapping method is the second mapping method, a mapping relationship between RO and SSB is established together for at least two different types of RO in a first order;

[0054] The first order is the order of performing frequency domain mapping first and then time domain mapping.

[0055] In the above embodiments, the mapping relationship between RO and SSB can be established based on the first order, making the mapping method more flexible.

[0056] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0057] Send the second message to the terminal;

[0058] The second information is used to indicate the period, which is the associated period configured for the mapping method.

[0059] In the above embodiments, the network device can configure the cycle by sending a second information to the terminal.

[0060] In conjunction with some embodiments of the first aspect, in some embodiments, the period is an integer multiple of the RACH period of the random access channel.

[0061] In conjunction with some embodiments of the first aspect, in some embodiments, the period configured for the first mapping method is different from the period configured for the second mapping method.

[0062] In the above embodiments, the period configuration is more flexible.

[0063] Secondly, embodiments of this disclosure provide a communication method, the method being executed by a terminal, the method comprising:

[0064] Receive the first information sent by the network device;

[0065] The first information is used to indicate the mapping method between the random access channel timing (RO) and the synchronization signal block (SSB); the RO includes at least two different types of ROs; the mapping method includes at least one of the following:

[0066] The first mapping method is an independent mapping method that establishes a mapping relationship between different types of RO and SSB respectively;

[0067] The second mapping method is a joint mapping method that establishes a mapping relationship between different types of ROs and SSBs.

[0068] In conjunction with some embodiments of the second aspect, in some embodiments, the RO includes a first type of RO and a second type of RO, wherein the first type of RO is a traditional legacy RO and the second type of RO is a sub-band full-duplex RO.

[0069] In conjunction with some embodiments of the second aspect, in some embodiments,

[0070] When the mapping method is the first mapping method, the mapping relationship between RO and SSB is established in a first order for at least two different types of RO;

[0071] The first order is the order of performing frequency domain mapping first and then time domain mapping.

[0072] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0073] When the mapping method is the second mapping method, the mapping relationship between RO and SSB is established in a first order for at least two different types of RO;

[0074] The first order is the order of performing frequency domain mapping first and then time domain mapping.

[0075] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0076] Receive the second information sent by the network device;

[0077] The second information is used to indicate the period, which is the associated period configured for the mapping method.

[0078] In conjunction with some embodiments of the second aspect, in some embodiments, the period is an integer multiple of the RACH period of the random access channel.

[0079] In conjunction with some embodiments of the second aspect, in some embodiments, the period configured for the first mapping method is different from the period configured for the second mapping method.

[0080] Thirdly, embodiments of this disclosure provide a communication method, the method comprising:

[0081] The network device sends the first information to the terminal;

[0082] The first information is used to indicate the mapping method between the random access channel timing (RO) and the synchronization signal block (SSB); the RO includes at least two different types of ROs; the mapping method includes at least one of the following:

[0083] The first mapping method is an independent mapping method that establishes a mapping relationship between different types of RO and SSB respectively;

[0084] The second mapping method is a joint method that establishes a mapping relationship between different types of ROs and SSBs.

[0085] Fourthly, embodiments of this disclosure provide a network device, the network device comprising:

[0086] The transceiver module is configured as follows:

[0087] Send the first message to the terminal;

[0088] The first information is used to indicate the mapping method between the random access channel timing (RO) and the synchronization signal block (SSB); the RO includes at least two different types of ROs; the mapping method includes at least one of the following:

[0089] The first mapping method is an independent mapping method that establishes a mapping relationship between different types of RO and SSB respectively;

[0090] The second mapping method is a joint method that establishes a mapping relationship between different types of ROs and SSBs.

[0091] Fifthly, embodiments of this disclosure provide a terminal, the terminal comprising:

[0092] The transceiver module is configured as follows:

[0093] Receive the first information sent by the network device;

[0094] The first information is used to indicate the mapping method between the random access channel timing (RO) and the synchronization signal block (SSB); the RO includes at least two different types of ROs; the mapping method includes at least one of the following:

[0095] The first mapping method is an independent mapping method that establishes a mapping relationship between different types of RO and SSB respectively;

[0096] The second mapping method is a joint method that establishes a mapping relationship between different types of ROs and SSBs.

[0097] In a sixth aspect, embodiments of this disclosure provide a communication system including a network device and a terminal; the network device is configured to implement the method described in the first aspect, and the terminal is configured to implement the method described in the second aspect.

[0098] Seventhly, embodiments of this disclosure provide a network device, the network device comprising:

[0099] One or more processors;

[0100] The network device is used to execute the method provided in the first aspect.

[0101] Eighthly, embodiments of this disclosure provide a terminal, the terminal comprising:

[0102] One or more processors;

[0103] The terminal is used to execute the method provided in the second aspect.

[0104] Ninthly, embodiments of this disclosure provide a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the method described in the optional implementations of the first and / or second aspects.

[0105] In a tenth aspect, embodiments of this disclosure provide a program product that, when executed by a communication device, causes the communication device to perform the method as described in the optional implementations of the first and / or second aspects.

[0106] Eleventhly, embodiments of this disclosure provide a computer program that, when run on a computer, causes the computer to perform the methods described in optional implementations of the first and / or second aspects.

[0107] In a twelfth aspect, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes processing circuitry configured to perform the methods described according to optional implementations of the first and / or second aspects above.

[0108] It is understood that the aforementioned terminals, network devices, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0109] This disclosure provides a communication method, a terminal, a network device, a communication system, and a storage medium. In some embodiments, the terms "communication method," "information indication method," "information processing method," and "information transmission method" can be used interchangeably, as can the terms "communication system" and "information processing system."

[0110] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0111] In each of the disclosed embodiments, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0112] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0113] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0114] In the embodiments of this disclosure, "multiple" refers to two or more.

[0115] In some embodiments, the terms “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0116] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of B); in some embodiments, B (execute B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). The same applies when there are more branches such as A, B, C, etc.

[0117] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execution of A regardless of B); in some embodiments, B (execution of B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, C, etc.

[0118] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0119] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0120] In some embodiments, the terms “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “if…”, “if…”, etc., can be used interchangeably.

[0121] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.

[0122] In some embodiments, the apparatus and device may be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they may also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "body", etc.

[0123] In some embodiments, "network" can be interpreted as devices included in the network, such as access network devices, core network devices, etc.

[0124] 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," or "fixed station." In some embodiments, it may also be understood as "node," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "antenna panel," "antenna array," "cell," "macro cell," "small cell," "femto cell," "pico cell," "sector," "cell group," "serving cell," "carrier," "component carrier," or "bandwidth part (BWP)."

[0125] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)," "user terminal," "mobile station (MS)," "mobile terminal (MT)," "subscriber station," "mobile unit," "subscriber unit," "wireless unit," "remote unit," "mobile device," "wireless device," "wireless communication device," "remote device," "mobile subscriber station," "access terminal," "mobile terminal," "wireless terminal," "remote terminal," "handset," "user agent," "mobile client," "client," etc.

[0126] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0127] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0128] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0129] Figure 1a is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.

[0130] As shown in Figure 1a, the communication system 100 includes a terminal 101 and a network device 102.

[0131] In some embodiments, network devices include access network devices and core network devices.

[0132] In some embodiments, the terminal includes, but is not limited to, at least one of the following: mobile phone, wearable device, Internet of Things device, car with communication function, smart car, tablet computer, computer with wireless transceiver function, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device in industrial control, wireless terminal device in self-driving, wireless terminal device in remote medical surgery, wireless terminal device in smart grid, wireless terminal device in transportation safety, wireless terminal device in smart city, and wireless terminal device in smart home.

[0133] In some embodiments, the access network device may be a node or device that connects a terminal to a wireless network. The access network device may include, but is not limited to, at least one of the following in a 5G communication system: evolved Node B (eNB), next-generation eNB (ng-eNB), next-generation Node B (gNB), node B (NB), home node B (HNB), home evolved node B (HeNB), radio backhaul device, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in a 6G communication system, open RAN, cloud RAN, base station in other communication systems, and access node in a Wi-Fi system.

[0134] In some embodiments, the technical solutions of this disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within access network devices involved in the embodiments of this disclosure can be transformed into internal interfaces of Open RAN. The processes and information interactions between these internal interfaces can be implemented by software or programs.

[0135] In some embodiments, the access network device may be composed of a central unit (CU) and a distributed unit (DU). The CU may also be called a control unit. The CU-DU structure can separate the protocol layer of the access network device. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU and centrally controlled by the CU. However, this is not the only possibility.

[0136] In some embodiments, a core network device may be a single device comprising one or more network elements, or it may be multiple devices or a group of devices, each comprising all or part of the aforementioned one or more network elements. Network elements 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), or a Next Generation Core (NGC).

[0137] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions provided in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in this disclosure are also applicable to similar technical problems.

[0138] The following embodiments of this disclosure can be applied to the communication system 100 shown in FIG1a, or to some of the main bodies, but are not limited thereto. The main bodies shown in FIG1a are illustrative. The communication system may include all or some of the main bodies in FIG1a, or it may include other main bodies outside of FIG1a. The number and form of each main body are arbitrary. The connection relationship between the main bodies is illustrative. The main bodies may not be connected or may be connected. The connection can be in any way, it can be a direct connection or an indirect connection, it can be a wired connection or a wireless connection.

[0139] The embodiments disclosed herein 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), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, Ultra-Wideband (UWB), Bluetooth (a 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, systems utilizing other communication methods, and next-generation systems built upon them, etc. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).

[0140] In some embodiments, the 5G network TDD configuration includes both semi-static configuration and dynamic indication. The semi-static configuration includes the cell-level TDD configuration tdd-UL-DL-ConfigurationCommon and the UE-specific configuration TDD-UL-DL-ConfigDedicated. tdd-UL-DL-ConfigurationCommon is configured per cell in ServingCellConfigCommonSIB via system broadcast. TDD-UL-DL-ConfigDedicated is also configured per cell and per UE in ServingCellConfig via dedicated Radio Resource Control (RRC) signaling. TDD-UL-DL-ConfigDedicated can configure certain flexible slots in tdd-UL-DLConfigurationCommon as downlink slots (DL slots), uplink slots (UL slots), or a combination of both.

[0141] In some embodiments, the semi-static configuration selection is based on statistical analysis of network downlink and uplink traffic during network design. High uplink requirements, such as those from sporting events and concerts, necessitate higher uplink traffic, while high downlink requirements exist for activities like uploading videos and images to social media, such as streaming high-definition video content.

[0142] In some embodiments, Dynamic TDD uses the Physical Downlink Control Channel (PDCCH) Downlink Control Information (DCI) format 2-0 to change flexible slots to DL slots or UL slots (except 255) within a certain time window. This method of dynamically allocating resources according to traffic demand can improve system performance and spectral efficiency. However, it can introduce cross-link interference (CLI) problems.

[0143] In some embodiments, for asymmetric spectrum during TDD operation, SBFD technology is discussed to improve UL coverage, reduce latency, increase system capacity, and enhance configuration flexibility. This SBFD technology allows simultaneous transmission and reception on the gNB side, while the UE side remains half-duplex.

[0144] In some embodiments, under subband full-duplex mode, an SBFD subband consists of one or more consecutive resource blocks used to transmit data in the same link direction (downlink or uplink). An SBFD symbol refers to the symbol of the subband containing the SBFD operation. In the Rel-18 study, a TDD carrier's SBFD symbol contains at most one uplink subband for SBFD operation. This uplink subband can be located on one side or in the middle of the carrier in the frequency domain. The network configures the time and frequency domain resources of the SBFD subband.

[0145] In some embodiments, see Figure 1b, which shows an example of Subband Full-Duplex (SBFD), where “D” indicates downlink and “U” indicates uplink. SBFD symbols containing uplink subbands are configured in the second, third, and fourth time slots.

[0146] In some embodiments, DL public information is transmitted using a beam sweeping method. The UE measures different beam directions within the cell to determine its optimal beam direction.

[0147] In some embodiments, in DL common signals or information, the UE receives downlink common signals or information under the measured good beam. When the UE initially accesses the network side, the UE needs to notify the network side of the good beam so that the network side can send UE-specific data to the UE under the good beam. In order to notify the network side of the uplink good beam direction, the New Radio (NR) system, in the design of the Random Access Channel (RACH), associates the Random Access Channel Occasion (RO) and / or preamble with the Synchronization Signaling Block (SSB), and the UE sends MSG1 (that is, the selected RO resource and / or preamble) to indicate which SSB the good beam is on the network side.

[0148] In some embodiments, the SSB-per-RO parameter configuration is used to configure a ratio between an SSB and a RO. For example, this parameter configuration is ssb-perRACH-OccasionAndCB-PreamblesPerSSB.

[0149] In some embodiments, the mapping relationship between RO and SSB is independent between legacy RO and SSB and between SBFD RO and SSB. After selecting an RO, the UE needs to go through several steps before it can fallback to the legacy RO.

[0150] In some embodiments, for handover scenarios, if the legacy ROs are more densely distributed than the SBFD ROs, then choosing legacy ROs is beneficial for HO latency; otherwise, SBFD ROs are chosen. Therefore, based on the current approach, the introduction of SBFD ROs does not significantly improve handover latency unless DLs constitute the majority of the DL / UL ratio and a denser SBFD RO configuration is used. To further reduce handover latency and improve the gain of SBFD, a joint mapping between legacy ROs and SBFD ROs and the SSB can be considered.

[0151] Figure 2a is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 2a, the present disclosure relates to a communication method for a communication system 100, the method comprising:

[0152] Step S2101: Network devices establish mapping relationships.

[0153] In some embodiments, the mapping relationship is a mapping relationship established based on a first mapping method and / or a second mapping method.

[0154] In some embodiments, the first mapping method is an independent mapping method that establishes a mapping relationship between different types of Random Access Channel Occasions (ROs) and Synchronization Signaling Blocks (SSBs).

[0155] In some embodiments, the second mapping method is a joint mapping method that establishes a mapping relationship between different types of ROs (jointly or jointly) and SSBs.

[0156] In some embodiments, the RO includes at least two different types of RO.

[0157] In some embodiments, the RO includes a first type of RO and a second type of RO.

[0158] In some embodiments, the first type of RO is a legacy RO.

[0159] In some embodiments, the first type of RO is a non-subband full-duplex (SBFD) RO, which may also be referred to as a legacy RO.

[0160] In some embodiments, the second type of RO is SBFD RO.

[0161] For example, a relationship A is established between the first type of RO and SSB1, and a relationship B is established between the second type of RO and SSB2. This scenario can be understood as an independent mapping method.

[0162] For example, a C relationship is established between the first type of RO, the second type of RO, and SSB1. This scenario can be understood as a joint mapping method.

[0163] In some embodiments, when the mapping method is the first mapping method, the mapping relationship between RO and SSB is established in a first order for at least two different types of RO.

[0164] In some embodiments, when the mapping method is the first mapping method, the mapping relationship between SBFD RO and SSB is established for SBFD RO in a first order.

[0165] In some embodiments, when the mapping method is the first mapping method, a mapping relationship between non-SBFD RO and SSB is established in a first order for non-SBFD RO.

[0166] In some embodiments, when the mapping method is the second mapping method, a mapping relationship between RO and SSB is established together for at least two different types of RO in a first order.

[0167] In some embodiments, when the mapping method is the second mapping method, a mapping relationship between RO and SSB is established for RO in a first order, wherein RO includes SBFD RO and non-SBFD RO.

[0168] In some embodiments, the first order is the order of performing frequency domain mapping first and then time domain mapping, but it is not limited to this.

[0169] Step S2102: The network device sends the first information to the terminal.

[0170] In some embodiments, the terminal receives first information sent by the network device.

[0171] In some embodiments, the terminal may be a terminal in an RRC idle state or an RRC inactive state.

[0172] In some embodiments, the first information is used to indicate the mapping method between the random access channel timing (RO) and the synchronization signal block (SSB).

[0173] In some embodiments, the RO includes at least two types of RO.

[0174] In some embodiments, the network device sends first information to the terminal after determining the mapping method to be used.

[0175] In some embodiments, the network device determines that the mapping method used is a first mapping method, and the network device sends first information to the terminal to indicate that the first mapping method is used.

[0176] In some embodiments, the network device determines that the mapping method used is a second mapping method, and the network device sends first information to the terminal to indicate that the second mapping method is used.

[0177] In some embodiments, the network device sends a Radio Resource Control (RRC) message to the terminal, the RRC message containing the first information.

[0178] In some embodiments, the network device sends downlink control information (DCI) to the terminal, the DCI containing the first information.

[0179] In some embodiments, the network device sends a Media Access Control (MAC) control element (CE) to the terminal, the MAC CE containing the first information.

[0180] In some embodiments, a system broadcast message is sent to the terminal, the system broadcast message containing the first information.

[0181] In some embodiments, the first information may be included in the common RACH configuration information.

[0182] Step S2103: The network device sends the second information to the terminal.

[0183] In some embodiments, the terminal receives second information sent by the network device.

[0184] In some embodiments, the second information is used to indicate a period, which is an associated period configured for the mapping method.

[0185] In some embodiments, the period is an integer multiple of the RACH period of the random access channel. For example, N times, where N is greater than 0.

[0186] In some embodiments, the association period configured for the first mapping method is different from the association period configured for the second mapping method. That is, each uses an independent period configuration.

[0187] In some embodiments, when the mapping method is a first mapping method, second information is sent to the terminal. The second information is used to indicate a first period, which is an association period configured for the first mapping method.

[0188] In some embodiments, when the mapping method is a first mapping method, second information is sent to the terminal. The second information is used to indicate a first period, which is an associated period configured for the second mapping method.

[0189] In some embodiments, when the mapping method is a second mapping method, second information is sent to the terminal. The second information is used to indicate a second period, which is an associated period configured for the second mapping method.

[0190] In some embodiments, when the mapping method is a second mapping method, second information is sent to the terminal. The second information is used to indicate a second period, which is an association period configured for the first mapping method.

[0191] In some embodiments, the association period can be an association pattern period. Each association period can correspond to a time length.

[0192] Step S2104: The terminal performs random access.

[0193] In some embodiments, when the first information indicates that a first mapping method is used, the terminal performs random access based on the resources determined by the first mapping method.

[0194] In some embodiments, when the first information indicates the use of a second mapping method, the terminal performs random access based on the resources determined by the second mapping method.

[0195] In some embodiments, when the first information indicates the use of a first mapping method and a second mapping method, the terminal performs random access based on the resources determined by the first mapping method or the second mapping method. For example, the terminal may choose to perform random access based on the resources determined by the first mapping method.

[0196] In some embodiments, during cell handover scenarios, the terminal performs random access based on the first information, which is not limited here.

[0197] In some embodiments, the term "information" may be used interchangeably with terms such as "message," "signal," "signaling," "report," "configuration," "indication," "instruction," "command," "channel," "parameter," "field," and "data."

[0198] In some embodiments, the term "send" may be used interchangeably with terms such as "transmit," "report," or "transmit."

[0199] The information indication method involved in the embodiments of this disclosure may include at least one of steps S2101 to S2104. For example, step S2101 may be implemented as a standalone embodiment, step S2102 may be implemented as a standalone embodiment, step S2103 may be implemented as a standalone embodiment, and step S2104 may be implemented as a standalone embodiment. For example, step S2102 combined with step S2104 may be implemented as a standalone embodiment, step S2101 combined with steps S2102 and S2104 may be implemented as a standalone embodiment, and step S2101 combined with steps S2102, S2103, and S2104 may be implemented as a standalone embodiment, but is not limited thereto. Steps S2102 and S2103 may be executed in an interchangeable order, but is not limited thereto.

[0200] Figure 3a is a flowchart illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 3a, the present disclosure relates to a communication method, which includes:

[0201] Step S3101: Establish mapping relationship between network devices.

[0202] In some embodiments, the mapping relationship is a mapping relationship established based on a first mapping method.

[0203] In some embodiments, the mapping relationship is a mapping relationship established based on a second mapping method.

[0204] In some embodiments, the first mapping method is an independent mapping method that establishes a mapping relationship between different types of Random Access Channel Occasions (ROs) and Synchronization Signaling Blocks (SSBs).

[0205] In some embodiments, the second mapping method is a joint mapping method that establishes a mapping relationship between different types of ROs (jointly or jointly) and SSBs.

[0206] In some embodiments, when the mapping method is the first mapping method, the mapping relationship between RO and SSB is established in a first order for at least two different types of RO.

[0207] In some embodiments, when the mapping method is the first mapping method, the mapping relationship between SBFD RO and SSB is established for SBFD RO in a first order.

[0208] In some embodiments, when the mapping method is the first mapping method, a mapping relationship between non-SBFD RO and SSB is established in a first order for non-SBFD RO.

[0209] In some embodiments, when the mapping method is the second mapping method, a mapping relationship between RO and SSB is established together for at least two different types of RO in a first order.

[0210] In some embodiments, when the mapping method is the second mapping method, a mapping relationship between RO and SSB is established for RO in a first order, wherein RO includes SBFD RO and non-SBFD RO.

[0211] In some embodiments, optional implementations of step S3101 can be found in other related parts of the embodiment involving step S2101 in FIG2a, which will not be repeated here.

[0212] Step S3102: The network device sends the first information to the terminal.

[0213] In some embodiments, the first information is used to indicate the use of a first mapping method.

[0214] In some embodiments, the first information is used to indicate the use of a second mapping method.

[0215] In some embodiments, the network device determines that the mapping method used is a first mapping method, and the network device sends first information to the terminal to indicate that the first mapping method is used.

[0216] In some embodiments, the network device determines that the mapping method used is a second mapping method, and the network device sends first information to the terminal to indicate that the second mapping method is used.

[0217] In some embodiments, optional implementations of step S3102 can be found in other related parts of the embodiment involving step S2102 in FIG2a, which will not be repeated here.

[0218] Step S3103: The network device sends the second information to the terminal.

[0219] In some embodiments, the second information is used to indicate a period, which is an associated period configured for the mapping method.

[0220] In some embodiments, the period is an integer multiple of the random access channel (RACH) period.

[0221] In some embodiments, the association period configured for the first mapping method is different from the association period configured for the second mapping method.

[0222] In some embodiments, optional implementations of step S3103 can be found in other related parts of the embodiment involving step S2103 in FIG2a, which will not be repeated here.

[0223] Step S3104: The terminal performs random access.

[0224] In some embodiments, when the first information indicates that a first mapping method is used, the terminal performs random access based on the resources determined by the first mapping method.

[0225] In some embodiments, when the first information indicates the use of a second mapping method, the terminal performs random access based on the resources determined by the second mapping method.

[0226] In some embodiments, optional implementations of step S3104 can be found in other related parts of the embodiment involving step S2104 in FIG2a, which will not be repeated here.

[0227] The information indication method involved in the embodiments of this disclosure may include at least one of steps S3101 to S3104. For example, step S3101 may be implemented as a standalone embodiment, step S3102 may be implemented as a standalone embodiment, step S3103 may be implemented as a standalone embodiment, and step S3104 may be implemented as a standalone embodiment. For example, step S3102 combined with step S3104 may be implemented as a standalone embodiment, step S3101 combined with steps S3102 and S3104 may be implemented as a standalone embodiment, and step S3101 combined with steps S3102, S3103, and S3104 may be implemented as a standalone embodiment, but is not limited thereto. Steps S3102 and S3103 may be executed in an interchangeable order, but is not limited thereto.

[0228] Figure 4a is a flowchart illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 4a, the present disclosure relates to a communication method, which includes:

[0229] Step S4101: Network devices establish mapping relationships.

[0230] In some embodiments, the mapping relationship is a mapping relationship established based on a first mapping method.

[0231] In some embodiments, the first mapping method is an independent mapping method that establishes a mapping relationship between different types of Random Access Channel Occasions (ROs) and Synchronization Signaling Blocks (SSBs).

[0232] In some embodiments, the RO includes at least two different types of RO.

[0233] In some embodiments, the RO includes a first type of RO and a second type of RO.

[0234] In some embodiments, the first type of RO is a legacy RO.

[0235] In some embodiments, the first type of RO is a non-subband full-duplex (SBFD) RO, which may also be referred to as a legacy RO.

[0236] In some embodiments, the second type of RO is SBFD RO.

[0237] For example, a relationship A is established between the first type of RO and SSB1, and a relationship B is established between the second type of RO and SSB2. This scenario can be understood as a first mapping method, namely an independent mapping relationship.

[0238] In some embodiments, when the mapping method is the first mapping method, the mapping relationship between RO and SSB is established in a first order for at least two different types of RO.

[0239] In some embodiments, when the mapping method is the first mapping method, the mapping relationship between SBFD RO and SSB is established for SBFD RO in a first order.

[0240] In some embodiments, when the mapping method is the first mapping method, a mapping relationship between non-SBFD RO and SSB is established in a first order for non-SBFD RO.

[0241] In some embodiments, the first order is the order of performing frequency domain mapping first and then time domain mapping, but it is not limited to this.

[0242] In some embodiments, optional implementations of step S4101 can be found in other related parts of the embodiment involving step S2101 in FIG2a, which will not be repeated here.

[0243] Step S4102: The network device sends the first information to the terminal.

[0244] In some embodiments, the terminal may be a terminal in an RRC idle state or an RRC inactive state.

[0245] In some embodiments, the first information is used to indicate: a first mapping method.

[0246] In some embodiments, the RO includes at least two types of RO.

[0247] In some embodiments, the network device sends first information to the terminal after determining that a first mapping method is to be used.

[0248] In some embodiments, the network device determines that the mapping method used is a first mapping method, and the network device sends first information to the terminal to indicate that the first mapping method is used.

[0249] In some embodiments, the network device sends a Radio Resource Control (RRC) message to the terminal, the RRC message containing the first information.

[0250] In some embodiments, the network device sends downlink control information (DCI) to the terminal, the DCI containing the first information.

[0251] In some embodiments, the network device sends a Media Access Control (MAC) control element (CE) to the terminal, the MAC CE containing the first information.

[0252] In some embodiments, a system broadcast message is sent to the terminal, the system broadcast message containing the first information.

[0253] In some embodiments, the first information may be included in the common RACH configuration information.

[0254] In some embodiments, optional implementations of step S4102 can be found in other related parts of the embodiment involving step S2102 in FIG2a, which will not be repeated here.

[0255] Step S4103: The network device sends the second information to the terminal.

[0256] In some embodiments, the terminal receives second information sent by the network device.

[0257] In some embodiments, the second information is used to indicate a period, which is an associated period configured for the mapping method.

[0258] In some embodiments, the period is an integer multiple of the RACH period of the random access channel. For example, N times, where N is greater than 0.

[0259] In some embodiments, when the mapping method is a first mapping method, second information is sent to the terminal. The second information is used to indicate a first period, which is an association period configured for the first mapping method.

[0260] In some embodiments, when the mapping method is a first mapping method, second information is sent to the terminal. The second information is used to indicate a first period, which is an associated period configured for the second mapping method.

[0261] In some embodiments, the association period can be an association pattern period. Each association period can correspond to a time length.

[0262] In some embodiments, optional implementations of step S4103 can be found in other related parts of the embodiment involving step S2103 in FIG2a, which will not be repeated here.

[0263] Step S4104: The terminal performs random access.

[0264] In some embodiments, when the first information indicates that a first mapping method is used, the terminal performs random access based on the resources determined by the first mapping method.

[0265] In some embodiments, during cell handover scenarios, the terminal performs random access based on the first information, which is not limited here.

[0266] In some embodiments, optional implementations of step S4104 can be found in other related parts of the embodiment involving step S2104 in FIG2a, which will not be repeated here.

[0267] The information indication method involved in the embodiments of this disclosure may include at least one of steps S4101 to S4104. For example, step S4101 may be implemented as a standalone embodiment, step S4102 may be implemented as a standalone embodiment, step S4103 may be implemented as a standalone embodiment, and step S4104 may be implemented as a standalone embodiment. For example, step S4102 combined with step S4104 may be implemented as a standalone embodiment, step S4101 combined with steps S4102 and S4104 may be implemented as a standalone embodiment, and step S4101 combined with steps S4102, S4103, and S4104 may be implemented as a standalone embodiment, but is not limited thereto. Steps S4102 and S4103 may be executed in an interchangeable order, but is not limited thereto.

[0268] Figure 5a is a flowchart illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 5a, the present disclosure relates to a communication method, which includes:

[0269] Step S5101: Establish mapping relationship between network devices.

[0270] In some embodiments, the mapping relationship is a mapping relationship established based on a second mapping method.

[0271] In some embodiments, the second mapping method is a joint mapping method that establishes a mapping relationship between different types of ROs (jointly or jointly) and SSBs.

[0272] In some embodiments, the RO includes at least two different types of RO.

[0273] In some embodiments, the RO includes a first type of RO and a second type of RO.

[0274] In some embodiments, the first type of RO is a legacy RO.

[0275] In some embodiments, the first type of RO is a non-subband full-duplex (SBFD) RO, which may also be referred to as a legacy RO.

[0276] In some embodiments, the second type of RO is SBFD RO.

[0277] For example, a C relationship is established between the first type of RO, the second type of RO, and SSB1. This scenario can be understood as a joint mapping method.

[0278] In some embodiments, when the mapping method is the second mapping method, a mapping relationship between RO and SSB is established together for at least two different types of RO in a first order.

[0279] In some embodiments, when the mapping method is the second mapping method, a mapping relationship between RO and SSB is established for RO in a first order, wherein RO includes SBFD RO and non-SBFD RO.

[0280] In some embodiments, the first order is the order of performing frequency domain mapping first and then time domain mapping, but it is not limited to this.

[0281] In some embodiments, optional implementations of step S5101 can be found in other related parts of the embodiment involving step S2101 in FIG2a, which will not be repeated here.

[0282] Step S5102: The network device sends the first information to the terminal.

[0283] In some embodiments, the terminal may be a terminal in an RRC idle state or an RRC inactive state.

[0284] In some embodiments, the first information is used to indicate a second mapping method.

[0285] In some embodiments, the RO includes at least two types of RO.

[0286] In some embodiments, the network device sends first information to the terminal after determining that the second mapping method is adopted.

[0287] In some embodiments, the network device determines that the mapping method used is a second mapping method, and the network device sends first information to the terminal to indicate that the second mapping method is used.

[0288] In some embodiments, the network device sends a Radio Resource Control (RRC) message to the terminal, the RRC message containing the first information.

[0289] In some embodiments, the network device sends downlink control information (DCI) to the terminal, the DCI containing the first information.

[0290] In some embodiments, the network device sends a Media Access Control (MAC) control element (CE) to the terminal, the MAC CE containing the first information.

[0291] In some embodiments, a system broadcast message is sent to the terminal, the system broadcast message containing the first information.

[0292] In some embodiments, the first information may be included in the common RACH configuration information.

[0293] In some embodiments, optional implementations of step S5102 can be found in other related parts of the embodiment involving step S2102 in FIG2a, which will not be repeated here.

[0294] Step S5103: The network device sends the second information to the terminal.

[0295] In some embodiments, the terminal receives second information sent by the network device.

[0296] In some embodiments, the second information is used to indicate a period, which is an associated period configured for the mapping method.

[0297] In some embodiments, the period is an integer multiple of the RACH period of the random access channel. For example, N times, where N is greater than 0.

[0298] In some embodiments, when the mapping method is a second mapping method, second information is sent to the terminal. The second information is used to indicate a second period, which is an associated period configured for the second mapping method.

[0299] In some embodiments, when the mapping method is a second mapping method, second information is sent to the terminal. The second information is used to indicate a second period, which is an association period configured for the first mapping method.

[0300] In some embodiments, the association period can be an association pattern period. Each association period can correspond to a time length.

[0301] In some embodiments, optional implementations of step S5103 can be found in other related parts of the embodiment involving step S2103 in FIG2a, which will not be repeated here.

[0302] Step S5104: The terminal performs random access.

[0303] In some embodiments, when the first information indicates the use of a second mapping method, the terminal performs random access based on the resources determined by the second mapping method.

[0304] In some embodiments, during cell handover scenarios, the terminal performs random access based on the first information, which is not limited here.

[0305] In some embodiments, optional implementations of step S5104 can be found in other related parts of the embodiment involving step S2104 in FIG2a, which will not be repeated here.

[0306] The information indication method involved in the embodiments of this disclosure may include at least one of steps S5101 to S5104. For example, step S5101 may be implemented as a standalone embodiment, step S5102 may be implemented as a standalone embodiment, step S5103 may be implemented as a standalone embodiment, and step S5104 may be implemented as a standalone embodiment. For example, step S5102 combined with step S5104 may be implemented as a standalone embodiment, step S5101 combined with steps S5102 and S5104 may be implemented as a standalone embodiment, and step S5101 combined with steps S5102, S5103, and S5104 may be implemented as a standalone embodiment, but is not limited thereto. Steps S5102 and S5103 may be executed in an interchangeable order, but is not limited thereto.

[0307] Figure 6a is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 6a, the present disclosure relates to a communication method for a communication system 100, the method including one of the following steps:

[0308] Step S6101: The network device sends the first information to the terminal.

[0309] In some embodiments, the first information is used to indicate: the mapping method between the random access channel timing (RO) and the synchronization signal block (SSB); the RO includes at least two different types of ROs; the mapping method includes at least one of the following:

[0310] The first mapping method is an independent mapping method that establishes a mapping relationship between different types of RO and SSB respectively;

[0311] The second mapping method is a joint mapping method that establishes a mapping relationship between different types of ROs and SSBs.

[0312] The optional implementations of step S6101 can be found in the optional implementations of steps S2101 to S2104 in Figure 2a and other related parts in the embodiments involved in Figure 2a, which will not be repeated here.

[0313] In some embodiments, the above methods may include the methods described in the embodiments of the communication system side, network device, terminal, etc., which will not be repeated here.

[0314] To better understand the embodiments of this disclosure, the following exemplary embodiments are provided for further explanation:

[0315] In this disclosure, during handover scenarios, legacy ROs and SBFD ROs are jointly mapped to the SSB to further reduce handover latency and improve the gain of SBFD. Simultaneously, the mapping method between ROs and SSBs is determined based on network-side instructions, such as whether legacy ROs and SBFD ROs are jointly mapped to the SSB or mapped independently.

[0316] In some embodiments, the network-side configuration indicates which mapping method between RO and SSB is used (corresponding to the sending of the first information), such as whether legacy RO and SBFD RO are mapped together with SSB or mapped independently. For example, please refer to Figures 7a and 7b, where Figure 7a shows the combined method (corresponding to the first mapping method) and Figure 7b shows the independent method (corresponding to the second mapping method).

[0317] In some embodiments, the network side can configure the mapping method via RRC dedicated signaling. The mapping method can also be dynamically changed based on DCI or MAC CE.

[0318] In some embodiments, if it is an independent mapping method, the network side configures the length of the association period for SSB and SBFD RO mapping, which is the time length corresponding to several RACH cycles.

[0319] In some embodiments, if it is an independent mapping method, the valid SBFD RO is mapped to the SSB in the order of frequency domain first, then time domain. The valid Legacy RO is mapped to the SSB in the order of frequency domain first, then time domain.

[0320] In some embodiments, if a joint mapping method is used, the SSB is mapped together with the legacy RO, first in the frequency domain and then in the time domain. A significant gain of the joint mapping method is that the SSB / RO association period is shortened, thus reducing the delay during multi-terminal handover due to waiting for the corresponding beam RO. Furthermore, an independent association pattern period is employed.

[0321] In some embodiments, starting from frame 0, the association period for mapping synchronization signal and physical broadcast channel (SS / PBCH) block indices to physical random access channel (PRACH) timings is the minimum value in a set determined by the PRACH configuration period, such that the SS / PBCH block index is mapped to a PRACH timing at least once within the association period, wherein the UE obtains this value from the ssb-PositionsInBurst value in System Information Block SIB1 or ServingCellConfigCommon. If, after an integer number of SS / PBCH block index to PRACH timing mapping periods within the association period, there exists a set of PRACH timings or PRACH preambles that are not mapped to SS / PBCH block indices, then no SS / PBCH block index is mapped to that set of PRACH timings or PRACH preambles. The association pattern period comprises one or more association periods and is determined such that the pattern between PRACH timings and SS / PBCH block indices repeats at most once every 160 milliseconds. PRACH timings (if any) that are not associated with the SS / PBCH block index after an integer number of associated cycles are not used for PRACH transmission.

[0322] In some embodiments, if it is a joint mapping method, the network side configures the length of the association period for SSB and RO mapping (corresponding to the transmission of the second information), which is the time length corresponding to several RACH cycles.

[0323] In some embodiments, the technical solutions disclosed herein can also be extended to other contention-free and contention-based random access (CFRA) scenarios, such as beam failure recovery (BFR) and DL data arrival scenarios. Therefore, the aforementioned indication information can be carried in RRC signaling or DCI, i.e., in the command that triggers CFRA.

[0324] In some embodiments, for future 6G, it can also be applied in the RRC_IDLE or INACTIVE UE, in the common RACH configuration, that is, in the system broadcast information indicating the mapping method.

[0325] In the embodiments disclosed herein, 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 in other embodiments.

[0326] This disclosure also provides an apparatus for implementing any of the above methods. For example, an apparatus is provided that includes units or modules for implementing the steps performed by the terminal in any of the above methods. Alternatively, another apparatus is provided that includes units or modules for implementing the steps performed by a network device (e.g., an access network device, a core network functional node, a core network device, etc.) in any of the above methods.

[0327] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single object, or they can be separated on the object. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0328] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute 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 relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using 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 configuring the hardware circuit 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. Furthermore, 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), or a Deep Learning Processing Unit (DPU).

[0329] Figure 8a is a schematic diagram of the structure of the network device 8100 according to an embodiment of this disclosure. As shown in Figure 8a, the network device 8100 may include at least one of a transceiver module 8101, a processing module 8102, etc. In some embodiments, the transceiver module is used to send and receive information. Optionally, the transceiver module is used to perform at least one of the communication steps such as sending and / or receiving performed by the network device in any of the above methods, which will not be described in detail here. Optionally, the processing module is used to perform at least one of the other steps performed by the network device in any of the above methods, which will not be described in detail here.

[0330] Figure 8b is a schematic diagram of the structure of a terminal 8200 according to an embodiment of this disclosure. As shown in Figure 8b, the terminal 8200 may include at least one of a transceiver module 8201, a processing module 8202, etc. In some embodiments, the transceiver module is used to send and receive information. Optionally, the transceiver module is used to perform at least one of the communication steps such as sending and / or receiving performed by the terminal in any of the above methods, which will not be described in detail here. In some embodiments, the transceiver module may include a sending module and / or a receiving module, which may be separate or integrated together. Optionally, the transceiver module may be interchangeable with a transceiver.

[0331] In some embodiments, the processing module may be a single module or may include multiple sub-modules. Optionally, the multiple sub-modules may each perform all or part of the steps required by the processing module. Optionally, the processing module may be interchangeable with a processor.

[0332] Figure 9a is a schematic diagram of the structure of the communication device 9100 proposed in an embodiment of this disclosure. The communication device 9100 can be a network device (e.g., access network device, core network device, etc.), a terminal (e.g., user equipment, etc.), a chip, chip system, or processor that supports the network device in implementing any of the above methods, or a chip, chip system, or processor that supports the terminal in implementing any of the above methods. The communication device 9100 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0333] As shown in Figure 9a, the communication device 9100 includes one or more processors 9101. The processor 9101 can be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. The communication device 9100 is used to execute any of the above methods.

[0334] In some embodiments, the communication device 9100 further includes one or more memories 9102 for storing instructions. Optionally, all or part of the memories 9102 may also be located outside the communication device 9100.

[0335] In some embodiments, the communication device 9100 further includes one or more transceivers 9103. When the communication device 9100 includes one or more transceivers 9103, the transceivers 9103 perform at least one of the communication steps such as sending and / or receiving in the above method (e.g., steps S2101, S3101, but not limited thereto), and the processor 9101 performs at least one of the other steps.

[0336] In some embodiments, a transceiver may include a receiver and / or a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, etc., may be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., may be used interchangeably; and the terms receiver, receiving unit, receiver, receiving circuit, etc., may be used interchangeably.

[0337] In some embodiments, the communication device 9100 may include one or more interface circuits 9104. Optionally, the interface circuit 9104 is connected to the memory 9102, and the interface circuit 9104 can be used to receive signals from the memory 9102 or other devices, and can be used to send signals to the memory 9102 or other devices. For example, the interface circuit 9104 can read instructions stored in the memory 9102 and send the instructions to the processor 9101.

[0338] The communication device 9100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 9100 described in this disclosure is not limited thereto, and the structure of the communication device 9100 may not be limited by FIG. 9a. The communication device may be a standalone device or a part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, smart terminal device, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.

[0339] Figure 9b is a schematic diagram of the structure of the chip 9200 proposed in an embodiment of this disclosure. For cases where the communication device 9100 can be a chip or a chip system, please refer to the schematic diagram of the chip 9200 shown in Figure 9b, but it is not limited thereto.

[0340] Chip 9200 includes one or more processors 9201, which are used to perform any of the above methods.

[0341] In some embodiments, chip 9200 further includes one or more interface circuits 9202. Optionally, the interface circuit 9202 is connected to memory 9203, and the interface circuit 9202 can be used to receive signals from memory 9203 or other devices, and the interface circuit 9202 can be used to send signals to memory 9203 or other devices. For example, the interface circuit 9202 can read instructions stored in memory 9203 and send the instructions to processor 9201.

[0342] In some embodiments, the interface circuit 9202 performs at least one of the communication steps such as sending and / or receiving in the above method (e.g., steps S2101, S3101, but not limited thereto), and the processor 9201 performs at least one of the other steps.

[0343] In some embodiments, the terms interface circuit, interface, transceiver pin, transceiver, etc., can be used interchangeably.

[0344] In some embodiments, chip 9200 further includes one or more memories 9203 for storing instructions. Optionally, all or part of the memories 9203 may be located outside of chip 9200.

[0345] This disclosure also proposes a storage medium storing instructions that, when executed on the communication device 9100, cause the communication device 9100 to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0346] This disclosure also provides a program product that, when executed by the communication device 9100, causes the communication device 9100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0347] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

Claims

1. A communication method, characterized in that, The method is performed by a network device, and the method includes: Send the first message to the terminal; The first information is used to indicate the mapping method between the random access channel timing (RO) and the synchronization signal block (SSB); the RO includes at least two different types of ROs; the mapping method includes at least one of the following: The first mapping method is an independent mapping method that establishes a mapping relationship between different types of RO and SSB respectively; The second mapping method is a joint mapping method that establishes a mapping relationship between different types of ROs and SSBs.

2. The method according to claim 1, characterized in that, The RO includes a first type of RO and a second type of RO. The first type of RO is a traditional legacy RO, and the second type of RO is a sub-band full-duplex SBFD RO.

3. The method according to any one of claims 1 to 2, characterized in that, The method further includes: When the mapping method is the first mapping method, a mapping relationship between RO and SSB is established for at least two different types of RO in a first order; The first order is the order of performing frequency domain mapping first and then time domain mapping.

4. The method according to any one of claims 1 to 2, characterized in that, The method further includes: When the mapping method is the second mapping method, a mapping relationship between RO and SSB is established together for at least two different types of RO in a first order; The first order is the order of performing frequency domain mapping first and then time domain mapping.

5. The method according to claim 1, characterized in that, The method further includes: Send the second message to the terminal; The second information is used to indicate the period, which is an associated period configured for the mapping method; the period is an integer multiple of the random access channel (RACH) period.

6. The method according to claim 5, characterized in that, The period configured for the first mapping method is different from the period configured for the second mapping method.

7. A communication method, characterized in that, The method is executed by a terminal, and the method includes: Receive the first message sent by the network device; The first information is used to indicate the mapping method between the random access channel timing (RO) and the synchronization signal block (SSB); the RO includes at least two different types of ROs; the mapping method includes at least one of the following: The first mapping method is an independent mapping method that establishes a mapping relationship between different types of RO and SSB respectively; The second mapping method is a joint mapping method that establishes a mapping relationship between different types of ROs and SSBs.

8. The method according to claim 7, characterized in that, The RO includes a first type of RO and a second type of RO. The first type of RO is a traditional legacy RO, and the second type of RO is a sub-band full-duplex SBFD RO.

9. The method according to any one of claims 7 to 8, characterized in that, When the mapping method is the first mapping method, the mapping relationship between RO and SSB is established in a first order for at least two different types of RO; The first order is the order of performing frequency domain mapping first and then time domain mapping.

10. The method according to any one of claims 7 to 8, characterized in that, The method further includes: When the mapping method is the second mapping method, the mapping relationship between RO and SSB is established in a first order for at least two different types of RO; The first order is the order of performing frequency domain mapping first and then time domain mapping.

11. The method according to claim 7, characterized in that, The method further includes: Receive the second information sent by the network device; The second information is used to indicate the period, which is an associated period configured for the mapping method; the period is an integer multiple of the random access channel (RACH) period.

12. The method according to claim 11, characterized in that, The period configured for the first mapping method is different from the period configured for the second mapping method.

13. A communication method, characterized in that, The method includes: The network device sends the first information to the terminal; The first information is used to indicate the mapping method between the random access channel timing (RO) and the synchronization signal block (SSB); the RO includes at least two different types of ROs; the mapping method includes at least one of the following: The first mapping method is an independent mapping method that establishes a mapping relationship between different types of RO and SSB respectively; The second mapping method is a joint mapping method that establishes a mapping relationship between different types of ROs and SSBs.

14. A communication device, characterized in that, The communication device is used to perform the communication method according to any one of claims 1 to 6 or claims 7 to 12.

15. A communication system comprising a network device and a terminal, the network device being configured to implement the method of any one of claims 1 to 6, and the terminal being configured to implement the method of any one of claims 7 to 12.

16. A computer program product, comprising a computer program or instructions, characterized in that, When the computer program or instructions are executed by a processor, they implement the steps of the method according to any one of claims 1 to 6 and claims 7 to 12.

17. A storage medium, characterized in that, The storage medium stores instructions that, when executed on a communication device, cause the communication device to perform the method of any one of claims 1 to 6 and claims 7 to 12.

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