Prach determination method, communication device, communication system, and storage medium

Abstract

Embodiments of the present disclosure provide a physical random access channel resource determination method, a communication device, a communication system, a storage medium and a program product. The random access channel resource determination method is performed by a user equipment (UE), and the method comprises: receiving first information transmitted by a network device, the first information being used at least for configuring PRACH resources; determining, according to the first information, a RO set available to the UE, a RO of the RO set available to the UE associated with a synchronization signal broadcast block (SSB), and a random access preamble associated with the SSB; the RO set comprises one or more ROs available to the UE.

Description

PRACH determination method, communication device, communication system and storage medium TECHNICAL FIELD

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

[0002] In order to improve uplink (UL) coverage and throughput, a subband full duplex (SBFD) technology is introduced in a multiplexing enhancement technology. For example, a frequency domain range corresponding to a downlink (DL) or flexible symbol of a carrier component (CC) is divided into a plurality of subbands (SBs). The plurality of subbands can include one or more UL subbands. The UL subband can be used for uplink transmission.

[0003] SUMMARY

[0004] Embodiments of the present disclosure provide a PRACH resource determination method, a communication device, a communication system, a storage medium and a program product.

[0005] According to a first aspect of embodiments of the present disclosure, a PRACH resource determination method is provided, wherein the method is performed by a user equipment (UE), and the method comprises: receiving first information sent by a network device, wherein the first information is used at least for configuring PRACH resources; determining, according to the first information, a set of ROs that the UE can use, an RO of a set of ROs associated with a synchronisation signal physical broadcast channel block (SSB) that the UE can use, and a random access preamble associated with each RO of the set of ROs associated with the SSB, wherein the set of ROs includes one or more ROs that the UE can use.

[0006] According to a second aspect of embodiments of the present disclosure, a PRACH resource determination method is provided, wherein the method is performed by a network device, and the method comprises: sending, to a user equipment (UE), first information, wherein the first information is used at least for configuring PRACH resources; determining, according to the first information, a set of ROs that the UE can use, an RO of a set of ROs associated with a synchronisation signal physical broadcast channel block (SSB) that the UE can use, and a random access preamble associated with the SSB, wherein the set of ROs includes one or more ROs that the UE can use.

[0007] According to a third aspect of the embodiments of the present disclosure, a user equipment (UE) is provided, wherein the UE includes: a receiving module configured to receive first information transmitted by a network device, the first information being used at least for configuring PRACH resources; and a processing module configured to determine, according to the first information, a set of ROs available to the UE, an RO of the set of ROs available to the UE associated with a synchronization signal block (SSB), and a random access preamble associated with the SSB; the set of ROs including one or more ROs available to the UE.

[0008] According to a fourth aspect of the embodiments of the present disclosure, a network device is provided, wherein the network device includes: a sending module configured to send first information to a user equipment (UE), the first information being used at least for configuring PRACH resources; and a processing module configured to determine, according to the first information, a set of ROs available to the UE, an RO of the set of ROs available to the UE associated with a synchronization signal block (SSB), and a random access preamble associated with the SSB; the set of ROs including one or more ROs available to the UE.

[0009] According to a fifth aspect of the embodiments of the present disclosure, a communication system is provided, wherein the communication system includes a user equipment (UE) and a network device, the UE is configured to implement the PRACH resource determination method provided in the first aspect, and the network device is configured to implement the PRACH resource determination method provided in the second aspect.

[0010] According to a sixth aspect of the embodiments of the present disclosure, a communication device is provided, wherein the communication device includes: one or more processors; and wherein the processors are configured to invoke instructions to cause the communication device to perform the PRACH resource determination method provided in the first aspect or the second aspect.

[0011] According to a seventh aspect of the embodiments of the present disclosure, a storage medium is provided, wherein the storage medium stores instructions, and when the instructions are run on a communication device, the instructions cause the communication device to perform the PRACH resource determination method provided in the first aspect or the second aspect.

[0012] According to an eighth aspect of the embodiments of the present disclosure, a program product is provided, wherein the program product includes a computer program, and when the computer program is executed by a communication device, the computer program causes the communication device to implement the PRACH resource determination method provided in the first aspect or the second aspect.

[0013] In the technical solution provided by the embodiments of the present disclosure, the network device sends first information to the UE, the first information including PRACH resource configuration, based on which the UE can determine the RO set available to the UE and the SSB associated with each RO in the RO set available to the UE and the random access preamble associated with the SSB, thus achieving simple confirmation.

[0014] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the embodiments of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which are incorporated into and form part of the specification, illustrate the embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the embodiments of the present disclosure.

[0016] FIG. 1A is a schematic diagram of an architecture of a communication system according to an exemplary embodiment;

[0017] FIG. 1B is a schematic diagram of a configuration of an SBFD symbol according to an exemplary embodiment;

[0018] FIG. 1C is a schematic diagram of a configuration of an RO and a sub-band according to an exemplary embodiment;

[0019] FIG. 1D is a schematic diagram of a configuration of an RO according to an exemplary embodiment;

[0020] FIG. 1E is a schematic diagram of a configuration of a PRACH resource containing an RO according to an exemplary embodiment;

[0021] FIG. 2A is a schematic diagram of interactions of a method for determining a physical random access channel resource according to an exemplary embodiment;

[0022] FIG. 2B is a schematic diagram of time domain distribution of an RO according to an exemplary embodiment;

[0023] FIG. 2C is a schematic diagram of time domain distribution of another RO according to an exemplary embodiment;

[0024] FIG. 2D is a schematic diagram between an association period and an association pattern period according to an exemplary embodiment;

[0025] FIG. 3 is a schematic diagram of a flow of a method for determining a physical random access channel resource according to an exemplary embodiment;

[0026] FIG. 4 is a schematic diagram of a flow of a method for determining a physical random access channel resource according to an exemplary embodiment;

[0027] FIG. 5A is a schematic diagram of distribution of an RO according to an exemplary embodiment;

[0028] FIG. 5B is a diagram illustrating an association between a RO and an SSB, according to an example embodiment;

[0029] FIG. 5C is a diagram illustrating a distribution of a RO, according to an example embodiment;

[0030] FIG. 5D is a diagram illustrating an association between a RO and an SSB, according to an example embodiment;

[0031] FIG. 5E is a diagram illustrating a distribution of a RO, according to an example embodiment;

[0032] FIG. 5F is a diagram illustrating an association between a RO and an SSB, according to an example embodiment;

[0033] FIG. 6A is a diagram illustrating a distribution of a RO, according to an example embodiment;

[0034] FIG. 6B is a diagram illustrating an association between a RO and an SSB, according to an example embodiment;

[0035] FIG. 6C is a diagram illustrating a distribution of a RO, according to an example embodiment

[0036] FIG. 6D is a diagram illustrating an association between a RO and an SSB, according to an example embodiment;

[0037] FIG. 6E is a diagram illustrating a distribution of a RO, according to an example embodiment;

[0038] FIG. 6F is a diagram illustrating an association between a RO and an SSB, according to an example embodiment;

[0039] FIG. 6G is a diagram illustrating a distribution of a RO, according to an example embodiment;

[0040] FIG. 6H is a diagram illustrating an association between a RO and an SSB, according to an example embodiment;

[0041] FIG. 7A is a diagram illustrating a distribution of a RO, according to an example embodiment;

[0042] FIG. 7B is a diagram illustrating an association between a RO and an SSB, according to an example embodiment;

[0043] FIG. 7C is a diagram illustrating a distribution of a RO, according to an example embodiment;

[0044] FIG. 7D is a diagram illustrating an interaction of a method for determining a physical random access channel resource, according to an example embodiment;

[0045] FIG. 8A is a structural schematic diagram of a UE according to an example embodiment;

[0046] FIG. 8B is a structural schematic diagram of a network device according to an example embodiment;

[0047] FIG. 9A is a structural schematic diagram of a communication device according to an example embodiment;

[0048] FIG. 9B is a structural schematic diagram of a chip according to an example embodiment. DETAILED DESCRIPTION

[0049] Embodiments of the present disclosure provide a physical random access channel resource determination method, a communication device, a communication system, a storage medium and a program product.

[0050] In a first aspect, embodiments of the present disclosure provide a physical random access channel resource determination method, wherein a user equipment (UE) performs the method, and the method comprises: determining, according to first information, a set of ROs available to the UE, an RO of the set of ROs available to the UE associated with a synchronization signal block (SSB), and a random access preamble associated with the SSB; the set of ROs comprises one or more ROs available to the UE.

[0051] In the above embodiment, the UE receives first information from a network device, and determines, according to the first information, a set of ROs available to the UE, an RO of the set of ROs available to the UE associated with a SSB, and a random access preamble associated with the SSB, which has the characteristics of simple implementation and small signaling overhead.

[0052] In some embodiments of the first aspect, the first information comprises at least one of:

[0053] a first configuration, the first configuration being used to configure a first PRACH resource;

[0054] a second configuration, the second configuration being used to configure a second PRACH resource and a third PRACH resource;

[0055] a third configuration, the third configuration being used to configure the first PRACH resource and the third PRACH resource;

[0056] a fourth configuration, the fourth configuration being used to configure the second PRACH resource;

[0057] The first PRACH resource comprises at least one of a first type of RO, a second type of RO and a third type of RO; any type of RO in the first PRACH resource can be used by a first type of UE; one or more of the first type of RO and the second type of RO in the first PRACH resource can be used by a second type of UE.

[0058] The second PRACH resource includes at least one of the first type of RO and the second type of RO; any type of RO in the second PRACH resource can be used by the first type of UE; any type of RO in the second PRACH resource can be used by the second type of UE;

[0059] The third PRACH resource includes at least one of the first type of RO, the second type of RO, and the third type of RO; any type of RO in the third PRACH resource can be used by the first type of UE; the third PRACH resource cannot be used by the second type of UE.

[0060] In the above embodiments, the first information can provide one or more of the first configuration, the second configuration, and the third configuration. The first configuration, the second configuration, and the third configuration correspond to one or more PRACH resources. Therefore, the network device can flexibly configure the PRACH resources as needed.

[0061] In some embodiments of the first aspect, the time unit in which the first type of RO is located is a non-sub-band duplex (SBFD) time unit; and / or, the time unit in which the second type of RO is located is at least partially an SBFD time unit within a flexible F time unit, and the time unit in which the second type of RO is located does not include an SBFD time unit within a downlink (DL) time unit; and / or, the time unit in which the third type of RO is located is at least partially an SBFD time unit within a DL time unit.

[0062] Based on the above scheme, the first type of RO, the second type of RO, and the third type of RO are defined, and these ROs have different distribution characteristics in the time domain, which can meet the random access needs of UEs in different scenarios. For example, the second type of RO and the third type of RO can be distributed in the SBFD time units of the flexible time units and / or the DL time units. In this way, when a UE has a random access request in this vicinity, the UE can complete the random access in time.

[0063] In some embodiments, the set of ROs that the UE can use includes at least one of: a first set including a full set or a subset of the first ROs; and a second set including a full set or a subset of the second ROs.

[0064] Based on the above scheme, the set of ROs that the UE can use can be the first set or the second set. The first set can be a full set or a subset of all the first ROs configured by the first information. The second set can be a full set or a subset of the second ROs.

[0065] In some embodiments of the first aspect, the first RO comprises at least one of: the first type RO in the first PRACH resource; the second type RO in the first PRACH resource; the first type RO in the second PRACH resource; the second type RO in the second PRACH resource.

[0066] The type of ROs that the first RO can comprise is exemplified in the above embodiments.

[0067] In some embodiments of the first aspect, the second RO comprises at least one of:

[0068] the third type RO in the first PRACH resource;

[0069] the first type RO in the third PRACH resource;

[0070] the second type RO in the third PRACH resource;

[0071] the third type RO in the third PRACH resource.

[0072] In some embodiments, the second RO can comprise any of the above ROs.

[0073] In some embodiments of the first aspect, the determining, according to the first information, of the set of ROs available to the UE, the RO of the set of ROs available to the UE associated with a synchronization signal block (SSB), and the random access preamble associated with the SSB, comprises at least one of:

[0074] determining the first set according to a first parameter comprised in the first information and whether the first information contains a second parameter;

[0075] determining the second set according to a first parameter comprised in the first information and whether the first information contains a second parameter;

[0076] determining the second set according to a first parameter comprised in the first information and whether the first information contains a third parameter;

[0077] determining the second set according to a fourth parameter comprised in the first information and whether the first information contains a second parameter;

[0078] determining the second set according to a fourth parameter comprised in the first information and whether the first information contains a third parameter.

[0079] In the foregoing solution, the first set and the second set are determined according to the parameter values of the first parameter, the second parameter, the third parameter and the fourth parameter in the first information and configuration, so that the network device can flexibly configure the first set and the second set as needed.

[0080] In some embodiments of the first aspect, the first set is determined according to the first parameter included in the first information and whether the first information contains the second parameter, including one of the following:

[0081] The first parameter indicates N1, and the first information does not contain the second parameter, and the first set is determined as the full set of the first RO.

[0082] The first parameter indicates N1, and the first information contains the second parameter, and the first set is determined according to the value of the second parameter.

[0083] In the foregoing embodiments, how to determine the first set according to the size of N1 and whether the second parameter is contained in the first information or the value of the first information is limited, which has the beneficial effects of simple implementation and convenient configuration.

[0084] In some embodiments of the first aspect, the first parameter indicates N1, and the first information contains the second parameter, and the first set is determined according to the value of the second parameter, including:

[0085] The N1 is greater than 1, M1 first ROs in N1 first ROs associated with the SSB are determined according to the value of the second parameter, and the first set is determined according to the M1 first ROs; the M1 is a positive integer less than or equal to the N1, and the N1 is less than or equal to 1, and the first set is determined as the full set of the first RO.

[0086] Based on the foregoing solution, the first set is determined simply according to the N1 indicated by the first parameter and whether the first information contains the second parameter.

[0087] In some embodiments of the first aspect, the second set is determined according to the first parameter included in the first information and whether the first information contains the second parameter, including one of the following:

[0088] The first parameter indicates N1, and the first information does not contain the second parameter, and the second set is determined as the full set of the second RO.

[0089] The first parameter indicates N1, and the first information contains the second parameter, and the second set is determined according to the value of the second parameter.

[0090] Based on the above scheme, the determination of the second set can share the first parameter and the second parameter determined by the determination of the first set, and has the characteristics of simple implementation.

[0091] In some embodiments of the first aspect, the first parameter indicates N1, and the first information includes the second parameter, and the second set is determined according to a value of the second parameter, including one of the following:

[0092] The N1 is greater than 1, M2 second ROs in N1 second ROs associated with one SSB are determined according to a value of the third parameter, and the second set is determined according to the M2 second ROs; the M2 is a positive integer less than or equal to the N1.

[0093] The N1 is less than or equal to 1, and the second set is determined as a full set of the second RO.

[0094] In the above embodiments, specific ways of determining the second set according to the second parameter are given, which have the characteristics of simple implementation.

[0095] In some embodiments of the first aspect, the second set is determined according to at least one of the following:

[0096] The first parameter indicates N1, and the first information does not include the third parameter, and the second set is determined as a full set of the second RO.

[0097] The first parameter indicates N1, and the first information includes the third parameter, and the second set is determined according to a value of the third parameter.

[0098] Based on the above scheme, the second set will be determined according to the first parameter and the third parameter, which can share the first parameter with the determination of the first set, and at the same time, through the introduction of the third parameter, the configuration of the first set and the second set can be decoupled.

[0099] In some embodiments of the first aspect, the first parameter indicates N1, and the first information includes the third parameter, and the second set is determined according to a value of the third parameter, including one of the following:

[0100] The N1 is greater than 1, M3 second ROs in N1 second ROs associated with one SSB are determined according to a value of the third parameter, and the second set is determined according to the M3 second ROs; the M3 is a positive integer less than or equal to the N1.

[0101] The N1 is less than or equal to 1, and the second set is determined as a full set of the second RO.

[0102] The manner of determining the second set according to the third parameter is specifically given in the above embodiment, and has the characteristics of simple implementation.

[0103] In some embodiments of the first aspect, the determining the second set according to the fourth parameter of the first information and whether the first information contains the second parameter comprises one of the following: the fourth parameter indicates N2 and the first information does not contain the second parameter, determining the second set as the full set of the second RO; the fourth parameter indicates N2 and the first information contains the second parameter, determining the second set according to the value of the second parameter.

[0104] Based on the above scheme, the fourth parameter is introduced to realize decoupling of the configuration of the first set and the second set, and has the characteristics of simple implementation.

[0105] In some embodiments of the first aspect, the fourth parameter indicates N2 and the first information contains the second parameter, and the determining the second set according to the value of the second parameter comprises: the N2 is greater than 1, determining M4 second ROs in the N2 second ROs associated with the SSB according to the value of the second parameter, and determining the second set according to the M4 second ROs; the M4 is a positive integer less than or equal to the N2; the N2 is less than or equal to 1, and determining the second set as the full set of the second RO.

[0106] In some embodiments, the second set is determined according to the fourth parameter and the second parameter, so that the first set and the second set share the second parameter, but do not share the parameter indicating the maximum number of ROs that can be associated with one SSB, so that the configuration of the first set and the second set can be decoupled.

[0107] In some embodiments of the first aspect, the determining the second set according to the fourth parameter of the first information and whether the first information contains the third parameter comprises at least one of the following: the fourth parameter indicates N2 and the first information does not contain the third parameter, determining the second set as the full set of the second RO; the fourth parameter indicates N2 and the first information contains the third parameter, determining the second set according to the value of the third parameter.

[0108] In the above scheme, the parameters used by the first set and the second set are completely independent, so that the configuration of the first set and the second set can be completely decoupled, and the configuration flexibility of the first set and the second set can be realized.

[0109] In some embodiments of the first aspect, the determining the second set according to the fourth parameter of the first information and whether the first information contains the third parameter comprises at least one of the following: when the fourth parameter indicates N2 and the first information does not contain the third parameter, determining the second set as the full set of the second RO; when the fourth parameter indicates N2 and the first information contains the third parameter, determining the second set according to the value of the third parameter.

[0110] In some embodiments of the first aspect, the determining the set of ROs available to the UE, the RO of the set of ROs available to the UE associated with a synchronization signal broadcast block (SSB), and the random access preamble associated with the SSB according to the first information comprises: determining the SSB associated with each RO in the set of ROs available to the UE according to the number of ROs associated with one SSB; and determining the random access preamble associated with each SSB according to the number and index of the random access preamble associated with one SSB.

[0111] Based on the above scheme, after the first set and the second set are determined, the SSB associated with each RO in the set of ROs available to the UE is determined according to the number of ROs associated with one SSB, and the associated random access preamble is determined.

[0112] In some embodiments of the first aspect, the first type of UE and the second type of UE share the first set and are configured with the same set of random access preambles, the first type of UE uses the first set to send a PRACH signal of random access, and the first type of UE cannot use an uplink (UL) sub-band of a SBFD time unit in a downlink (DL) time unit to send physical uplink shared channel (PUSCH) information of Msg3 or MsgA of random access; or,

[0113] The first type of UE and the second type of UE share the first set and are configured with the same set of random access preambles, the first type of UE uses the first set to send a PRACH signal of random access, and the first type of UE can use an uplink (UL) sub-band of a SBFD time unit in a downlink (DL) time unit to send physical uplink shared channel (PUSCH) information of Msg3 or MsgA of random access; or,

[0114] The first type of UE and the second type of UE share the first set and are configured with different sets of random access preambles, the first type of UE uses the first set to send a PRACH signal of random access, and the first type of UE can use an uplink (UL) sub-band of a SBFD time unit in a downlink (DL) time unit to send physical uplink shared channel (PUSCH) information of Msg3 or MsgA of random access; or,

[0115] The first type of UE and the second type of UE share the first set and are configured with different random access preamble sets, the first type of UE uses the first set to send a PRACH signal of random access, and the first type of UE cannot use the uplink sub-band of the SBFD time unit in the downlink time unit to send the physical uplink shared channel (PUSCH) information of Msg3 or MsgA of random access.

[0116] Based on the above scheme, when the first type of UE and the second type of UE share the random access preamble set, whether the first type of UE and the second type of UE can specifically send the PUSCH information of Msg3 or MsgA of random access in the uplink sub-band of the SBFD time unit in the downlink time unit is given, and the specific implementation is simple and convenient.

[0117] In some embodiments of the first aspect, the first type of UE uses the second set to send a PRACH signal of random access, and the first type of UE can use the uplink sub-band of the SBFD time unit in the downlink time unit to send the PUSCH information of the third message (Msg3 or MsgA).

[0118] Based on the above scheme, if the first type of UE uses the second set to send the PRACH signal, the PUSCH information of Msg3 or MsgA in the uplink sub-band of the SBFD time unit in the downlink time unit can be used, which can improve the efficiency of random access.

[0119] In some embodiments of the first aspect, the method further comprises:

[0120] According to the criterion that each SSB is mapped to an RO at least once in an associated period and the configuration period of the PRACH resource, at least one associated period is determined; any one of the associated periods is X times the configuration period of the PRACH resource, and X is a positive integer; the values of X of different associated periods are the same or different;

[0121] According to the at least one associated period, an association pattern period is determined; the distribution of the at least one associated period of any two association pattern periods is the same.

[0122] Based on the above scheme, according to the configuration period of the PRACH resource of the SSB, the associated period and / or the association pattern period can be determined simply, the periodic distribution of the RO in the time domain is realized, and the periodic association between the SSB and the RO is realized.

[0123] The second aspect provides a physical random access channel (PRACH) resource determination method, wherein the method is performed by a network device, and the method comprises:

[0124] transmitting, to a user equipment (UE), first information, the first information being used at least for configuring PRACH resources;

[0125] determining, according to the first information, a set of ROs available to the UE, a RO of the set of ROs available to the UE associated with a synchronization signal block (SSB), and a random access preamble associated with the SSB; the set of ROs comprising one or more ROs available to the UE.

[0126] In some embodiments of the second aspect, the first information comprises at least one of:

[0127] a first configuration, the first configuration being used for configuring first PRACH resources;

[0128] a second configuration, the second configuration being used for configuring second PRACH resources and third PRACH resources;

[0129] a third configuration, the third configuration being used for configuring first PRACH resources and third PRACH resources;

[0130] a fourth configuration, the fourth configuration being used for configuring second PRACH resources;

[0131] the first PRACH resources comprise at least one of first type ROs, second type ROs, and third type ROs; any of the ROs in the first PRACH resources are available to first type UEs; one or more of the first type ROs and the second type ROs in the first PRACH resources are available to second type UEs;

[0132] the second PRACH resources comprise at least one of the first type ROs and the second type ROs; any of the ROs in the second PRACH resources are available to first type UEs; any of the ROs in the second PRACH resources are available to second type UEs;

[0133] the third PRACH resources comprise at least one of the first type ROs, the second type ROs, and the third type ROs; any of the ROs in the third PRACH resources are available to first type UEs; the third PRACH resources are not available to second type UEs.

[0134] In some embodiments of the second aspect, a time unit in which the first type ROs are located is a sub-band duplex (SBFD) time unit; and / or,

[0135] a time unit in which the second type ROs are located is at least partially an SBFD time unit within a flexible (F) time unit, and the time unit in which the second type ROs are located does not comprise an SBFD time unit within a downlink (DL) time unit; and / or,

[0136] The time unit where the third type of RO is located is at least partially a SBFD time unit within a downlink, DL, time unit.

[0137] In some embodiments of the second aspect, the set of ROs available to the UE comprises at least one of:

[0138] a first set comprising a full set or a subset of first ROs;

[0139] a second set comprising a full set or a subset of second ROs.

[0140] In some embodiments of the second aspect, the first ROs comprise at least one of:

[0141] the first type of ROs in the first PRACH resource;

[0142] the second type of ROs in the first PRACH resource;

[0143] the first type of ROs in the second PRACH resource;

[0144] the second type of ROs in the second PRACH resource.

[0145] In some embodiments of the second aspect, the second ROs comprise at least one of:

[0146] the third type of ROs in the first PRACH resource;

[0147] the first type of ROs in the third PRACH resource;

[0148] the second type of ROs in the third PRACH resource;

[0149] the third type of ROs in the third PRACH resource.

[0150] In some embodiments of the second aspect, the determining, according to the first information, the set of ROs available to the UE, the SSB associated with each RO of the set of ROs available to the UE, and the random access preamble associated with the SSB, comprises at least one of:

[0151] determining the first set according to a first parameter comprised in the first information and whether the first information contains a second parameter;

[0152] determining the second set according to a first parameter comprised in the first information and whether the first information contains a second parameter;

[0153] determining the second set according to a first parameter included in the first information and whether the first information includes a third parameter;

[0154] determining the second set according to a fourth parameter included in the first information and whether the first information includes a second parameter;

[0155] determining the second set according to a fourth parameter included in the first information and whether the first information includes a third parameter.

[0156] In some embodiments of the second aspect, the determining the first set according to the first parameter included in the first information and whether the first information includes a second parameter comprises at least one of:

[0157] when the first parameter indicates N1 and the first information does not include the second parameter, determining the first set as a full set of the first ROs;

[0158] when the first parameter indicates N1 and the first information includes the second parameter, determining the first set according to a value of the second parameter.

[0159] In some embodiments of the second aspect, when the first parameter indicates N1 and the first information includes the second parameter, the determining the first set according to the value of the second parameter comprises: when the N1 is greater than 1, determining one of the SSBs to be associated with M1 first ROs in the N1 first ROs according to the value of the second parameter, and determining the first set according to the M1 first ROs; the M1 is a positive integer less than or equal to the N1; and when the N1 is less than or equal to 1, determining the first set as a full set of the first ROs.

[0160] In some embodiments of the second aspect, the determining the second set according to the first parameter included in the first information and whether the first information includes a second parameter comprises at least one of:

[0161] when the first parameter indicates N1 and the first information does not include the second parameter, determining the second set as a full set of the second ROs;

[0162] when the first parameter indicates N1 and the first information includes the second parameter, determining the second set according to a value of the second parameter.

[0163] In some embodiments of the second aspect, when the first parameter indicates N1 and the first information includes the second parameter, the determining the second set according to the value of the second parameter comprises:

[0164] N1 is greater than 1, M2 second ROs in the N1 second ROs associated with the SSB are determined according to a value of the second parameter, and a second set is determined according to the M2 second ROs; M2 is a positive integer less than or equal to N1.

[0165] In some embodiments of the second aspect, the second set is determined according to at least one of the following:

[0166] The first parameter indicates N1, and the first information does not contain the third parameter, and the second set is determined as the full set of the second ROs;

[0167] The first parameter indicates N1, and the first information contains the third parameter, and the second set is determined according to a value of the third parameter.

[0168] In some embodiments of the second aspect, the first parameter indicates N1, and the first information contains the third parameter, and the second set is determined according to a value of the third parameter, including:

[0169] N1 is greater than 1, M3 second ROs in the N1 second ROs associated with the SSB are determined according to a value of the third parameter, and a second set is determined according to the M3 second ROs; M3 is a positive integer less than or equal to N1;

[0170] N1 is less than or equal to 1, and the second set is determined as the full set of the second ROs.

[0171] In some embodiments of the second aspect, the second set is determined according to at least one of the following:

[0172] The fourth parameter indicates N2, and the first information does not contain the second parameter, and the second set is determined as the full set of the second ROs;

[0173] The fourth parameter indicates N2, and the first information contains the second parameter, and the second set is determined according to a value of the second parameter.

[0174] In some embodiments of the second aspect, the fourth parameter indicates N2, and the first information contains the second parameter, and the second set is determined according to a value of the second parameter, including:

[0175] N2 is greater than 1, M4 second ROs in the N2 second ROs associated with one SSB are determined according to a value of the fourth parameter, and a second set is determined according to the M4 second ROs; M4 is a positive integer less than or equal to N2;

[0176] N2 is less than or equal to 1, and the second set is determined as a full set of the second ROs.

[0177] In some embodiments of the second aspect, the determining the second set according to the fourth parameter of the first information and whether the first information contains a third parameter includes at least one of the following:

[0178] The fourth parameter indicates N2, and the first information does not contain a third parameter, the second set is determined as a full set of the second ROs;

[0179] The fourth parameter indicates N2, and the first information contains a third parameter, and the second set is determined according to a value of the third parameter.

[0180] In some embodiments of the second aspect, the fourth parameter indicates N2, and the first information contains a third parameter, and the second set is determined according to a value of the third parameter, including:

[0181] N2 is greater than 1, M5 second ROs in the N2 second ROs associated with one SSB are determined according to a value of the third parameter, and a second set is determined according to the M5 second ROs; M5 is a positive integer less than or equal to N2;

[0182] N2 is less than or equal to 1, and the second set is determined as a full set of the second ROs.

[0183] In some embodiments of the second aspect, the determining the second set according to the first information includes:

[0184] According to a number of ROs associated with one SSB, determining SSBs associated with each RO in the set of ROs that the UE can use;

[0185] According to a number and an index of random access preambles associated with one SSB, determining random access preambles associated with each SSB.

[0186] In some embodiments of the second aspect, the first type of UE and the second type of UE share the first set, and the first information is further used to configure the first type of UE and the second type of UE with a same set of random access preambles in the first set.

[0187] The first type of UE and the second type of UE share the first set, and the first information is further used to configure the first type of UE and the second type of UE with different sets of random access preambles in the first set.

[0188] In some embodiments of the second aspect, the first type of UE and the second type of UE share the first set and are configured with the same set of random access preambles, the first type of UE uses the first set to send a PRACH signal of random access, and the first type of UE cannot use the uplink sub-band of the SBFD time unit within the downlink time unit to send the physical uplink shared channel PUSCH information of Msg3 or MsgA of random access; or,

[0189] The first type of UE and the second type of UE share the first set and are configured with the same set of random access preambles, the first type of UE uses the first set to send a PRACH signal of random access, and the first type of UE can use the uplink sub-band of the SBFD time unit within the downlink time unit to send the physical uplink shared channel PUSCH information of Msg3 or MsgA of random access; or,

[0190] The first type of UE and the second type of UE share the first set and are configured with different sets of random access preambles, the first type of UE uses the first set to send a PRACH signal of random access, and the first type of UE can use the uplink sub-band of the SBFD time unit within the downlink time unit to send the physical uplink shared channel PUSCH information of Msg3 or MsgA of random access; or,

[0191] The first type of UE and the second type of UE share the first set and are configured with different sets of random access preambles, the first type of UE uses the first set to send a PRACH signal of random access, and the first type of UE cannot use the uplink sub-band of the SBFD time unit within the downlink time unit to send the physical uplink shared channel PUSCH information of Msg3 or MsgA of random access.

[0192] In some embodiments of the second aspect, the first type of UE uses the second set to send a PRACH signal of random access, and the first type of UE can use the uplink sub-band of the SBFD time unit within the downlink time unit to send the physical uplink shared channel PUSCH information of the third message Msg3 or MsgA.

[0193] In some embodiments of the second aspect, the method further comprises:

[0194] at least one association period is determined according to a criterion that each SSB is mapped to an RO at least once in an association period and a configuration period of the PRACH resource; any one of the association periods is X times of the configuration period of the PRACH resource, where X is a positive integer; values of X of different ones of the association periods are the same or different;

[0195] An association pattern period is determined according to the at least one association period; any two of the association pattern periods are the same.

[0196] A third aspect provides a user equipment (UE), and the UE includes:

[0197] A receiving module configured to receive first information sent by a network device, the first information being used at least for configuring PRACH resources;

[0198] A processing module configured to determine, according to the first information, a set of ROs available to the UE, an RO of the set of ROs available to the UE associated with a synchronization signal block (SSB), and a random access preamble associated with the SSB; the set of ROs includes one or more ROs available to the UE.

[0199] A fourth aspect provides a network device, and the network device includes:

[0200] A sending module configured to send first information to a user equipment (UE), the first information being used at least for configuring PRACH resources;

[0201] A processing module configured to determine, according to the first information, a set of ROs available to the UE, an RO of the set of ROs available to the UE associated with a synchronization signal block (SSB), and a random access preamble associated with the SSB; the set of ROs includes one or more ROs available to the UE.

[0202] A fifth aspect, the embodiments of the present disclosure provide a communication system, and the communication system includes a UE and a network device, the UE is configured to implement the physical random access channel resource determination method provided in the first aspect, and the network device is configured to implement the physical random access channel resource determination method provided in the second aspect.

[0203] A sixth aspect, the embodiments of the present disclosure provide a communication device, and the communication device includes one or more processors; the processor is used to call instructions to make the communication device execute the physical random access channel resource determination method provided in the first aspect or the second aspect.

[0204] In a seventh aspect, the embodiments of the present disclosure provide a storage medium, wherein the storage medium stores instructions, when the instructions are executed on a communication device, the communication device executes the physical random access channel resource determination method provided in the first aspect or the second aspect.

[0205] In an eighth aspect, the embodiments of the present disclosure provide a program product, wherein the program product comprises a program and / or instructions, when the program and / or instructions are executed by a communication device, the communication device can implement the physical random access channel resource determination method provided in the first aspect or the second aspect.

[0206] In a ninth aspect, the embodiments of the present disclosure provide a computer program, when the computer program is executed on a computer, the computer executes the physical random access channel resource determination method provided in the first aspect or the second aspect.

[0207] In a tenth aspect, the embodiments of the present disclosure provide a chip or a chip system. The chip or the chip system comprises processing circuitry configured to execute the physical random access channel resource determination method provided in the first aspect or the second aspect.

[0208] It can be understood that the UE, the network device, the communication device, the communication system, the storage medium, the program product, and the computer program are used to execute the method provided by the embodiments of the present disclosure. Therefore, the beneficial effects achieved thereby can refer to the beneficial effects in the corresponding method, which will not be described here.

[0209] The embodiments of the present disclosure provide a physical random access channel resource determination method, a communication device, a communication system, a storage medium, and a program product. In some embodiments, the physical random access channel resource determination method, the information processing method, and the information transmission method can be replaced with each other, and the communication system and the information processing system can be replaced with each other.

[0210] The embodiments of the present disclosure are not exhaustive, but are only a part of the embodiments, and are not specific limitations on the protection scope of the present disclosure. In the case of no contradiction, each step in an embodiment can be implemented as an independent embodiment, and the steps can be combined arbitrarily, for example, the scheme after removing some steps in an embodiment can also be implemented as an independent embodiment, and the order of the steps in an embodiment can be exchanged arbitrarily, in addition, the optional implementation manners in an embodiment can be combined arbitrarily; in addition, the embodiments can be combined arbitrarily, for example, the steps of different embodiments or part or all of the steps of different embodiments can be combined arbitrarily, an embodiment can be combined with the optional implementation manners of other embodiments.

[0211] In the embodiments of the present disclosure, the terms and / or descriptions among the embodiments are consistent and can be referred to each other if there is no special description and logical conflict, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0212] The terms used in the embodiments of the present disclosure are only for the purpose of describing particular embodiments and are not used as limitations of the present disclosure.

[0213] In the embodiments of the present disclosure, unless otherwise specified, the elements expressed in singular form, such as "one", "a", "the", "above", "said", "preceding", "this", etc., can represent "one and only one", or "one or more", "at least one", etc. For example, in the case of using articles such as "a", "an", "the" in English, the noun after the article can be understood as singular expression, or as plural expression.

[0214] In the embodiments of the present disclosure, "plurality" refers to two or more.

[0215] In some embodiments, the terms "at least one of", "one or more", "a plurality of", "multiple", and the like can be replaced with each other.

[0216] In some embodiments, the description manner such as "at least one of A, B", "A and / or B", "A in one case, B in another case", "one case A, another case B", and the like can include the following technical solutions according to the case: A in some embodiments (A is executed regardless of B); B in some embodiments (B is executed regardless of A); A and B are selectively executed in some embodiments (A and B are selected from A and B); A and B are executed in some embodiments (A and B are executed). When there are more branches such as A, B, C, etc., it is similar to the above.

[0217] In some embodiments, the description manner such as "A or B" and the like can include the following technical solutions according to the case: A in some embodiments (A is executed regardless of B); B in some embodiments (B is executed regardless of A); A and B are selectively executed in some embodiments (A and B are selected from A and B). When there are more branches such as A, B, C, etc., it is similar to the above.

[0218] The prefix words "first", "second", etc. in the embodiments of the present disclosure are merely used to distinguish different description objects, and do not constitute limitation on the position, sequence, priority, quantity or content of the description objects. The description objects are described in the claims or embodiments in the context of the description, and should not be construed as redundant limitation because of the use of the prefix words. For example, the description objects are "fields", and the ordinal words before "fields" in "first field" and "second field" do not limit the position or sequence between "fields". "First" and "second" do not limit whether the "fields" modified thereby are in the same message, nor do they limit the sequence of "first field" and "second field". For another example, the description objects are "levels", and the ordinal words before "levels" in "first level" and "second level" do not limit the priority between "levels". For another example, the quantity of the description objects is not limited by the ordinal words, and can be one or more. For example, "first device", wherein the quantity of "devices" can be one or more. In addition, the objects modified by different prefix words can be the same or different. For example, the description objects are "devices", and "first device" and "second device" can be the same device or different devices, and their types can be the same or different. For another example, the description objects are "information", and "first information" and "second information" can be the same information or different information, and their contents can be the same or different.

[0219] In some embodiments, "including A", "containing A", "for indicating A", "carrying A" can be interpreted as directly carrying A, or indirectly indicating A.

[0220] In some embodiments, the terms "time / frequency", "time / frequency domain" and the like refer to the time domain and / or the frequency domain.

[0221] In some embodiments, the terms "in response to", "in response to determining", "in the case of", "when", "when", "if", "if" and the like can be replaced with each other. These descriptions all refer to the objective situation that the device will make corresponding processing, and are not limited by time. It does not require the device to have a judgment action when it is implemented, nor does it mean that there are other limitations.

[0222] In some embodiments, the terms "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not lower than", "above" and the like can be replaced with each other. The terms "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", "below" and the like can be replaced with each other.

[0223] In some embodiments, an apparatus or the like can be interpreted as an entity, and can also be interpreted as virtual, and the name thereof is not limited to the name described in the embodiments. The terms "apparatus", "equipment", "device", "circuit", "network element", "network function", "network device", "function", "node", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject" and the like can be replaced with each other.

[0224] In some embodiments, a "network" can be interpreted as an apparatus (for example, an access network device, a core network device, and the like) included in the network.

[0225] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)" and the like can be replaced with each other.

[0226] In some embodiments, the terms "terminal," "terminal device," "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," and so on can be replaced with each other.

[0227] In some embodiments, the access network device, the core network device, or the network device can be replaced with a terminal. For example, the embodiments of the present disclosure can also be applied to a structure in which communication between the access network device, the core network device, or the network device and the terminal is replaced with communication between a plurality of terminals (e.g., device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, the terminal can also be configured to have all or part of the functions of the access network device. In addition, the terms "uplink," "downlink," and the like can also be replaced with terms corresponding to the inter-terminal communication (e.g., "side"). For example, the uplink channel, the downlink channel, and the like can be replaced with the side channel, and the uplink, the downlink, and the like can be replaced with the sidelink.

[0228] In some embodiments, the terminal can be replaced with the access network device, the core network device, or the network device. In this case, the access network device, the core network device, or the network device can also be configured to have all or part of the functions of the terminal.

[0229] In some embodiments, obtaining data, information, and the like can comply with laws and regulations of the country in which the location is situated.

[0230] In some embodiments, data, information, and the like can be obtained after obtaining consent from a user.

[0231] In addition, each element, each row, or each column in the table of the embodiments of the present disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0232] FIG. 1A is a schematic diagram illustrating an architecture of a communication system according to an exemplary embodiment.

[0233] As shown in FIG. 1A, the communication system 100 includes a terminal 101 and a network device 102. The network device 102 can include an access network device and / or a core network device. In some embodiments, the terminal 101 includes at least one of a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a Pad, 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 smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, a wireless terminal device in smart home, and the like, but is not limited thereto.

[0234] In some embodiments, the access network device may, for example, be at least one of a node or a device that accesses a terminal to a wireless network, and the access network device may include at least one of an evolved node B (eNB) in a 5G communication system, a next generation eNB (ng-eNB), a next generation node B (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, an access node in a Wi-Fi system, but is not limited thereto.

[0235] In some embodiments, the technical solutions of the present disclosure can be applied to an Open RAN architecture, at which time the interfaces between or within the access network devices involved in the embodiments of the present disclosure can become internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0236] In some embodiments, the access network device can be composed of a central unit (CU) and a distributed unit (DU), where the CU can also be referred to as a control unit. The CU-DU structure can split the protocol layers of the access network device, and some of the protocol layers are controlled by the CU, and the rest or all of the protocol layers are distributed in the DU and controlled by the CU, but is not limited thereto.

[0237] In some embodiments, the core network device can be one device including the first network element, etc., or a plurality of devices or device groups each including the first network element. The network element can be virtual or physical. The core network may, for example, include at least one of an evolved packet core (EPC), a 5G core network (5GCN), and a next generation core (NGC).

[0238] It can be understood that the communication system described in the embodiments of the present disclosure is for more clearly illustrating the technical solutions of the embodiments of the present disclosure, and does not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. Those skilled in the art can know that, with the evolution of system architecture and the appearance of new business scenarios, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems.

[0239] The following embodiments of the present disclosure can be applied to the communication system 100 shown in FIG. 1A or part of the subject, but are not limited thereto. The subjects shown in FIG. 1A are exemplary, and the communication system can include all or part of the subjects in FIG. 1A, or other subjects other than FIG. 1A. The number and form of each subject is arbitrary, and the connection relationship between the subjects is exemplary. The subjects can not be connected or can be connected, and the connection can be in any way, can be direct connection or indirect connection, can be wired connection or wireless connection.

[0240] Embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (Bluetooth (registered trademark)), Public Land Mobile Network (PLMN) network, Device-to-Device (D2D) system, Machine to Machine (M2M) system, Internet of Things (IoT) system, Vehicle-to-Everything (V2X), system using other communication methods, next-generation system expanded based thereon, and the like. Further, a plurality of systems can be applied in combination (for example, combination of LTE or LTE-A and 5G, and the like).

[0241] To improve UL coverage and throughput, subband full duplex (SBFD) will be studied in the duplex enhancement project. Specifically, a carrier component (CC) is divided into multiple subbands (SBs) in the frequency domain on the downlink (DL) or flexible (F) symbols. Multiple SBs, including one uplink (UL) SB and at least one DL SB, can be used by the base station to transmit DL signals in the DL SB and receive UL signals in the UL SB at the same time. The DL symbol or the F symbol is configured by the time division duplex uplink-downlink common configuration (TDD-UL-DL-ConfigCommon) or the time division duplex uplink-downlink dedicated configuration (TDD-UL-DL-ConfigDedicated) or the down control information (DCI) format 2-0 to be a DL or F symbol. A symbol that simultaneously contains a DL SB and a UL SB in the frequency domain can be referred to as an SBFD symbol. Similarly, a time slot that includes at least one SBFD symbol in the multiple symbols included in the time slot can be referred to as an SBFD time slot. As shown in FIG. 1B, time slot #0 is a DL time slot, including 14 DL symbols, and time slots #1-3 are SBFD time slots, each including 14 SBFD symbols. Time slot #4 is a UL time slot and includes 14 UL symbols. Between the DL SB and the UL SB, there can also be a guard band (GB) to reduce interference between the DL signals in the DL SB and the UL signals in the UL SB through frequency domain isolation.

[0242] In a subband full duplex (SBFD) symbol, the GB and the DL SB are not available for UL transmission, and the UL SB is available for UL transmission. In an SBFD symbol, the frequency domain range available for UL transmission can be referred to as the UL available frequency domain range, and the frequency domain range unavailable for UL transmission can be referred to as the UL unavailable frequency domain range. According to the above analysis, the UL frequency domain range of the non-SBFD symbol and the SBFD symbol is different. The UL available frequency domain range is the UL frequency domain range on the CC. In an SBFD symbol, the UL available frequency domain range on the UL BWP refers to the frequency domain range overlapping the UL available frequency domain range on the CC. Unless otherwise specified, the UL available frequency domain range in the following refers to the UL available frequency domain range on the BWP. As shown in FIG. 1C, the DL time slot is divided into a DL subband (SB), a UL SB, and a DL SB. The UL SB can be configured with an RO.

[0243] There can also be a guard band (GB) between the DL subband and the UL subband to isolate the DL subband from the UL subband in the frequency domain to reduce interference between the DL signals in the DL subband and the UL signals in the UL subband.

[0244] In an SBFD symbol, the frequency domain range available for UL transmission can not be continuous, including the following two cases: the GB and the DL subband are not available for UL transmission, and the UL subband is available for UL transmission; the DL subband is not available for UL transmission, and the UL subband and the GB are available for UL transmission.

[0245] The frequency domain range available for UL transmission in an SBFD symbol can be referred to as an UL frequency domain range, and the frequency domain range not available for UL transmission in an SBFD symbol can be referred to as outside the UL frequency domain range. As known from the above, the UL frequency domain range of a non-SBFD symbol and the UL frequency domain range of an SBFD symbol are different. The UL frequency domain range is the UL frequency domain range on a CC. In an SBFD symbol, the UL frequency domain range on a BWP refers to the frequency domain range overlapping the UL frequency domain range on the CC. Unless otherwise specified, the UL frequency domain range in the following refers to the UL frequency domain range on a BWP.

[0246] In an idle state, a UE measures the received signal strength of a synchronization signal and (Physical Bradcast Channne, PBCH) block (SSB) beam and other information during initial access to a cell, and selects an optimal SSB beam. In the direction of the optimal SSB beam, a PRACH signal is sent in a valid random access channel occasion (RO) to perform random access. A valid RO refers to an RO configured according to the criteria in the protocol. In addition, in other states, a UE can also send a PRACH signal in a valid RO to perform random access. Random access includes CBRA (Contention-Based Random Access) and CFRA (Contention-Free Random Access), where there are multiple UE cases using the same preamble sequence in CBRA, i.e., 2 UE PRACH signals collide, which will cause random access failure.

[0247] The time domain location of the RO can be determined according to the index prach-ConfigurationIndex and Table 1.

[0248] prach-ConfigurationIndex INTEGER (0..255);

[0249] PRACH configuration index: prach-ConfigurationIndex configured in RRC;

[0250] Preamble format: preamble format B4 is used;

[0251] nf mod x = y: The PRACH configuration period (PRACH configuration period) of the RO is 2 frames (x = 2), and the RO is on the odd frame (y = 1) in the 2 frames.

[0252] Subframe number: The RO is on subframes 2, 3, 4, 7, 8, 9 in the odd frame.

[0253] Starting Symbol: The starting symbol of the RO in the PRACH slot is 0.

[0254] Number of PRACH slots within a subframe: The number of PRACH slots in a subframe is 1 (the length of the subframe is 1 ms, and the corresponding SCS is 15 KHz, at this time, the length of the PRACH slot is 1 ms, and the SCS is 15 KHz).

[0255] Number of time-domain PRACH occasions within a PRACH slot: In the time domain, one PRACH slot contains 1 RO.

[0256] PRACH duration: The symbol length of one RO is 12 symbols.

[0257] The frequency domain where the RO is located is determined according to the following parameters:

[0258] msg1-FDM ENUMERATED {one, two, four, eight};

[0259] msg1-FrequencyStart INTEGER (0..maxNrofPhysicalResourceBlocks-1);

[0260] msg1-FDM: In the frequency domain, the number of ROs that are Frequency Division Multiplexing (FDM) in one PRACH slot.

[0261] msg1-FrequencyStart: the starting RB of the first RO in frequency domain of FDM, which is the offset of the first RB relative to the UL BWP;

[0262] Number of RBs occupied by one RO: determined according to the sequence length of PRACH signal and SCS.

[0263] The sequence length of PRACH signal can be determined according to prach-ConfigurationIndex to determine Preamble format, and the sequence length of PRACH signal is determined according to the sequence length of Preamble format agreed by the protocol.

[0264] The SCS of PRACH signal can be determined according to the number of slots of RO included in a subframe indicated by prach-ConfigurationIndex.

[0265] Table 1

[0266] The frequency domain where the RO is located is determined according to the following parameters

[0267] msg1-FDM ENUMERATED{one,two,four,eight},

[0268] msg1-FrequencyStart INTEGER(0..maxNrofPhysicalResourceBlocks-1)

[0269] msg1-FDM, which can be used to configure the number of ROs in one PRACH slot in frequency domain

[0270] msg1-FrequencyStart, which can be used to configure the starting RB of frequency domain.

[0271] In SBFD symbols, the UE can send uplink signals in UL SB, so the RO can be configured in SBFD symbols, compared with configuring the RO only in UL or F symbols, the number of ROs can be increased. The SBFD-aware UE (UE that can identify SBFD symbol configuration) can configure the RO in SBFD symbols for random access, which can reduce the access delay, and also can reduce the collision probability of PRACH signals of different UEs in CBRA.

[0272] In view of the UL available frequency domain range on SBFD symbols and non-SBFD symbols, in order to enable the use of RO on SBFD symbols, it is necessary to ensure that the RO on SBFD symbols is within the UL sub-band in the RACH resource configuration. The non-SBFD symbol can be any symbol other than the SBFD symbol. For example, the non-SBFD symbol can include an UL symbol and / or a DL symbol. The UL symbol can be dedicated to UL transmission. The DL symbol can be dedicated to DL transmission. FIG. 1D shows the RO configuration in one PRACH configuration period. Exemplarily, the RO is in subframes #2, 3, 4, 7, 8, and 9. In the time domain, one PRACH slot contains 1 RO, and the symbol range of the first RO in one subframe is OFDM symbol OS#0-11. In the frequency domain, one PRACH slot contains 2 ROs. For the SBFD-aware UE, there are 8 additional ROs and 4 original ROs. For the non-SBFD-aware UE, there are 4 original ROs. The 8 additional ROs are RO#0-3 and 6-9, respectively. The 4 original ROs are RO#4-5 and 10-11, respectively. The SBFD-aware UE can identify the additional RO and the original RO. The non-SBFD-aware UE can identify the original RO.

[0273] FIG. 2A is an interaction diagram 1 illustrating a physical random access channel resource determination method according to an exemplary embodiment. As shown in FIG. 2A, the embodiments of the present disclosure relate to a physical random access channel resource determination method, for a communication system 100, the method comprising:

[0274] S2101: The network device sends first information to the UE.

[0275] The communication system can be as shown in FIG. 1A. The UE is the terminal 101 shown in FIG. 1A. The network device can be one of the network devices 102 shown in FIG. 1A. In some embodiments, the network device can be an access network device and / or a core network device. Exemplarily, the network device can be a base station.

[0276] In some embodiments, the first information can comprise configuration information of the PRACH resource. Exemplarily, the configuration information can comprise PRACH configuration index in Table 1 and other parameters of the PRACH resource. Exemplarily, the configuration parameter can comprise frequency domain parameter and / or time domain parameter of one or more ROs comprised in the PRACH resource. The PRACH resource can be used for random access of the UE. The random access can comprise 4-step random access and / or 2-step random access. The random access can comprise contention-based random access and / or non-contention-based random access.

[0277] In some embodiments, the first information can comprise ssb-perRACH-OccasionAndCB-PreamblesPerSSB. The parameter can have two element values, one element value can be used to indicate the number of ROs associated with one SSB, and the other element value is used to indicate the number of random access preambles that can be used by one SSB. For example, if ssb-perRACH-OccasionAndCB-PreamblesPerSSB has a value of CHOICE{one n64}, it can represent that one SSB is associated with one RO, and the number of random access preambles that can be used by one SSB is 64, i.e., one SSB is associated with 64 random access preambles.

[0278] In some embodiments, the network device can configure one or more random access preambles for the RO through the configuration information of the PRACH resource, and the random access preambles can be used by the UE when initiating random access on the RO.

[0279] In some embodiments, the network device can send the first information through an RRC message, a MAC message, or downlink control information (DCI).

[0280] In some embodiments, the network device can broadcast, multicast, or unicast the first information.

[0281] In some embodiments, the network device sends the first information, and the UE receives the first information.

[0282] In some embodiments, the first information comprises at least one of:

[0283] a first configuration, the first configuration being used to configure a first PRACH resource;

[0284] a second configuration, the second configuration being used to configure a second PRACH resource and a third PRACH resource;

[0285] a third configuration, the third configuration being used for configuring a first PRACH resource and a third PRACH resource;

[0286] a fourth configuration, the fourth configuration being used for configuring a second PRACH resource.

[0287] In some embodiments, the first PRACH resource comprises at least one of a first type of RO, a second type of RO, and a third type of RO; any type of RO in the first PRACH resource is available to a first type of UE; one or more of the first type of RO and the second type of RO in the first PRACH resource is available to a second type of UE;

[0288] the second PRACH resource comprises at least one of the first type of RO and the second type of RO; any type of RO in the second PRACH resource is available to a first type of UE; any type of RO in the second PRACH resource is available to a second type of UE;

[0289] the third PRACH resource comprises at least one of the first type of RO, the second type of RO, and the third type of RO; any type of RO in the third PRACH resource is available to a first type of UE; the third PRACH resource is unavailable to a second type of UE.

[0290] In some embodiments, the time unit in which the first type of RO is located is a non-sub-band duplex (SBFD) time unit; and / or,

[0291] at least part of the time unit in which the second type of RO is located is an SBFD time unit within a flexible (F) time unit, and the time unit in which the second type of RO is located is not an SBFD time unit within a downlink (DL) time unit; and / or,

[0292] the time unit in which the third type of RO is located is at least part of an SBFD time unit within a DL time unit.

[0293] In some embodiments, as shown in FIG. 2B and FIG. 2C, RO#1 is a first type of RO; RO#2 and RO#3 are a second type of RO; RO#4, RO#5, and RO#6 are a third type of RO.

[0294] In some embodiments, the set of ROs available to the UE comprises at least one of:

[0295] a first set, the first set comprising a full set or a subset of first ROs;

[0296] a second set, the second set comprising a full set or a subset of second ROs.

[0297] In some embodiments, the first type of UE can use the first RO and / or the second RO. The second type of UE can not use the second RO. Illustratively, the first type of UE can use the first set and / or the second set. In some embodiments, the second type of UE can not use the second set.

[0298] In some embodiments, the first RO can be an original RO. Illustratively, the first RO can be an RO not configured on the SBFD time unit. In other embodiments, the second RO can be an extra RO. Illustratively, the second RO can include an RO configured on the SBFD time unit.

[0299] In some embodiments, the first RO includes at least one of: the first type of RO in the first PRACH resource; the second type of RO in the first PRACH resource; the first type of RO in the second PRACH resource; the second type of RO in the second PRACH resource.

[0300] In some embodiments, the second RO includes at least one of: the third type of RO in the first PRACH resource; the first type of RO in the third PRACH resource; the second type of RO in the third PRACH resource; the third type of RO in the third PRACH resource.

[0301] In some embodiments, the first information can include one or more of the first parameter, the second parameter, the third parameter, and the fourth parameter. Illustratively, the second parameter, the third parameter, and the fourth parameter can all be optional parameters. For example, the first information can only include the first parameter, in which case the first RO and / or the second RO associated with one SSB can be determined according to the first parameter.

[0302] In some embodiments, the first parameter can include, but is not limited to, ssb-perRACH-OccasionAndCB-PreamblesPerSSB. The ssb-perRACH-OccasionAndCB-PreamblesPerSSB can be a type of association relationship, illustratively, the ssb-perRACH-OccasionAndCB-PreamblesPerSSB can be used to indicate the number of ROs associated with one SSB, the number of random access preambles associated with one SSB.

[0303] In some embodiments, the fourth parameter can include, but is not limited to, ssb-perRACH-OccasionAndCB-PreamblesPerSSB-Ext. Similarly, the ssb-perRACH-OccasionAndCB-PreamblesPerSSB-Ext can be an extended parameter of ssb-perRACH-OccasionAndCB-PreamblesPerSSB. In other embodiments, ssb-perRACH-OccasionAndCB-PreamblesPerSSB-Ext and ssb-perRACH-OccasionAndCB-PreamblesPerSSB can be the same type of parameter. However, assuming that ssb-perRACH-OccasionAndCB-PreamblesPerSSB indicates the number of first ROs (N1) associated with one SSB and the number of random access preambles associated with one SSB when the random access preambles are transmitted in the first RO, ssb-perRACH-OccasionAndCB-PreamblesPerSSB-Ext can be used to indicate the number of second ROs (N2) associated with one SSB and the number of random access preambles associated with one SSB when the random access preambles are transmitted in the second RO.

[0304] In some embodiments, the second parameter can include, but is not limited to, msgA-SSB-SharedRO-Maskindex-r16. The msgA-SSB-SharedRO-Maskindex-r16 can be used to indicate the number of ROs associated with a corresponding SSB in the plurality of ROs indicated by the first parameter. The third parameter can include, but is not limited to, msgA-SSB-SharedRO-Maskindex-r16-additional RO. The msgA-SSB-SharedRO-Maskindex-r16-additional RO can be an extended parameter of msgA-SSB-SharedRO-Maskindex-r16, or msgA-SSB-SharedRO-Maskindex-r16 and msgA-SSB-SharedRO-Maskindex-r16-additional RO belong to the same type of parameter, but respectively act on the first RO and the second RO.

[0305] S2102: The UE and the network device determine the set of ROs that the UE can use.

[0306] In some embodiments, the third set is determined according to the first information and the capability of the UE. In some embodiments, the third set can include the full set of the first ROs and / or the full set of the second ROs. In some embodiments, the first information can configure the full set of the first ROs and the UE is the first type of UE or the second type of UE, and the third set can be considered as the full set of the first ROs. In other embodiments, the first information can configure the full set of the first ROs and the full set of the second ROs, and if the UE is the first type of UE, the third set can be the full set of the first ROs and the full set of the second ROs. If the UE is the second type of UE, the third set can be considered as the full set of the first ROs.

[0307] After the third set is determined, the SSBs associated with each RO in the third set are determined according to the number of ROs associated with one SSB. Then, the SSBs associated with each RO in the set of ROs that the UE can use are determined according to the association between each RO in the third set and the SSB. In this case, after the set of ROs that the UE can use is determined, the SSBs associated with each RO in the set of ROs that the UE can use are determined according to the association between each RO in the third set and the SSB.

[0308] In some embodiments, the SSBs associated with each RO in the set of ROs that the UE can use are determined according to the first information and the capability of the UE, and according to the number of ROs associated with one SSB.

[0309] In some embodiments, the set of ROs that the UE can use can include one or more ROs that the UE can use.

[0310] After the configuration of the first information is completed, the network device determines the set of ROs that each UE can use according to the first information. After the UE receives the first information, the UE determines the set of ROs that the UE can use according to the first information. Exemplarily, the set of ROs that the UE can use includes but is not limited to the first set and / or the second set described above. Exemplarily, the full set of the first ROs can be a set of all ROs configured by the first information. The first set can be the full set of the first ROs or a subset of the full set of the first ROs. Exemplarily, the full set of the second ROs can be a set of all second ROs configured by the first information. The second set can be the full set of the second ROs or a subset of the full set of the second ROs.

[0311] In some embodiments, the first set and the second set can be sets configured by the first information. In other embodiments, the first set and the second set can be sets of ROs agreed by a protocol. In still other embodiments, the first set and the second set can be sets of ROs configured by a higher layer message. In summary, there are various ways to configure the first set and the second set, and using the first information to configure is only one of them.

[0312] In some embodiments, the UE and the network device determine the set of ROs available to the UE in a manner that includes, but is not limited to, at least one of the following.

[0313] determining the first set according to a first parameter included in the first information and whether the first information includes a second parameter;

[0314] determining the second set according to a first parameter included in the first information and whether the first information includes a second parameter;

[0315] determining the second set according to a first parameter included in the first information and whether the first information includes a third parameter;

[0316] determining the second set according to a fourth parameter included in the first information and whether the first information includes a second parameter;

[0317] determining the second set according to a fourth parameter included in the first information and whether the first information includes a third parameter.

[0318] In some embodiments, the determining the first set according to a first parameter included in the first information and whether the first information includes a second parameter includes at least one of the following:

[0319] when the first parameter indicates N1 and the first information does not include the second parameter, determining the first set as the full set of the first ROs;

[0320] when the first parameter indicates N1 and the first information includes the second parameter, determining the first set according to a value of the second parameter.

[0321] That is, when the first information does not configure the second parameter, the first set of ROs available to the UE is the full set of all the first ROs configured by the first information.

[0322] When the first information configures the second parameter, the UE determines the first set according to a value of the second parameter.

[0323] In some embodiments, the determining the first set according to a first parameter included in the first information and whether the first information includes a second parameter includes at least one of the following:

[0324] when the N1 is greater than 1, determining M1 first ROs of the N1 first ROs associated with the SSB according to the value of the second parameter, and determining the first set according to the M1 first ROs; the M1 is a positive integer less than or equal to the N1.

[0325] The N1 is less than or equal to 1, and the second set is determined as a full set of the second RO.

[0326] Exemplarily, the N1 is greater than 0. If the N1 is greater than 1, it indicates that one SSB is associated with more than one first RO. If the N1 is equal to 1, it indicates that one SSB is associated with one RO. If the N1 is less than 1, it indicates that multiple SSBs are associated with one first RO. In the N1 first ROs associated with one SSB, when the N1 is greater than 1, a second parameter is configured, and according to the second parameter, M1 first ROs in the N1 first ROs can be used by the UE; if the second parameter is not configured, N1 first ROs in the N1 first ROs can be used by the UE.

[0327] In some embodiments, the second set is determined according to the first parameter included in the first information and whether the first information includes a second parameter, including at least one of the following:

[0328] The first parameter indicates N1, and the first information does not include the second parameter, and the second set is determined as a full set of the second RO.

[0329] The first parameter indicates N1, and the first information includes the second parameter, and the second set is determined according to a value of the second parameter.

[0330] In this embodiment, the number of first ROs associated with one SSB and the number of second ROs associated with one SSB can be determined by the first parameter and the second parameter. In this way, the first information can include only the first parameter, or the first information can include the first parameter and the second parameter, which can reduce signaling overhead.

[0331] In some embodiments, the first parameter indicates N1, and the first information includes the second parameter, and the second set is determined according to a value of the second parameter, including one of the following:

[0332] The N1 is greater than 1, and according to the value of the second parameter, M2 second ROs in the N1 second ROs associated with one SSB are determined, and a second set is determined according to the M2 second ROs; the M2 is a positive integer less than or equal to the N1.

[0333] The N1 is less than or equal to 1, and the second set is determined as a full set of the second RO.

[0334] In this case, the number of the second ROs associated with one SSB is the same as the number of the first ROs associated with one SSB, both of which are N1. According to the value of the second parameter, the number of M2 second ROs in the N1 second ROs associated with one SSB is equal to the number of M1 first ROs in the N1 first ROs associated with one SSB, i.e., M2 is equal to M1.

[0335] In some embodiments, the second set is determined according to at least one of the following based on the first parameter included in the first information and whether the first information includes a third parameter:

[0336] When the first parameter indicates N1 and the first information does not include the third parameter, the second set is determined as the full set of the second ROs.

[0337] When the first parameter indicates N1 and the first information includes the third parameter, the second set is determined according to the value of the third parameter.

[0338] In some embodiments, the number of the first ROs associated with one SSB and the number of the second ROs associated with one SSB can both be indicated by the first parameter. In this case, when the second set is determined, it is also determined according to the first parameter. Meanwhile, in order to distinguish the number of the first ROs available to the UE in the first ROs associated with one SSB and the number of the second ROs available to the UE in the second ROs associated with one SSB, a third parameter is introduced in parallel with the second parameter, so that the number of the first ROs available to the UE in the first ROs associated with one SSB and the number of the second ROs available to the UE in the second ROs associated with one SSB are disengaged, so that the network device can be flexibly configured according to specific needs.

[0339] In some embodiments, when the first parameter indicates N1 and the first information includes the third parameter, the second set is determined according to the value of the third parameter, including one of the following:

[0340] When the N1 is greater than 1, M3 second ROs in the N1 second ROs associated with one SSB are determined according to the value of the third parameter, and the second set is determined according to the M3 second ROs; the M3 is a positive integer less than or equal to the N1.

[0341] When the N1 is less than or equal to 1, the second set is determined as the full set of the second ROs.

[0342] In some embodiments, the second set is determined according to at least one of the following based on the fourth parameter included in the first information and whether the first information includes a second parameter:

[0343] the fourth parameter indicates N2 and the first information does not contain the second parameter, determining the second set as the full set of the second ROs;

[0344] the fourth parameter indicates N2 and the first information contains the second parameter, determining the second set according to the value of the second parameter.

[0345] In some embodiments, the first information includes a fourth parameter, and the UE and the network device determine the second set according to the fourth parameter. Further, the second set is determined according to the fourth parameter and / or whether the first information contains a second parameter. Alternatively, the second set is determined according to the fourth parameter and the value of the second parameter.

[0346] In some embodiments, the fourth parameter indicates N2 and the first information contains the second parameter, determining the second set according to the value of the second parameter, including:

[0347] the N2 is greater than 1, determining that one of the SSBs is associated with M4 second ROs in the N2 second ROs according to the value of the second parameter, and determining the second set according to the M4 second ROs; the M4 is a positive integer less than or equal to the N2

[0348] the N2 is less than or equal to 1, determining the second set as the full set of the second ROs.

[0349] In some embodiments, the value of N2 is greater than 0. If N2 is greater than 1, it means that one SSB is associated with more than one second RO. If N2 is equal to 1, it means that one SSB is associated with one RO. If N2 is less than 1, it means that multiple SSBs are associated with one second RO.

[0350] In some embodiments, the determination of the second set according to the fourth parameter of the first information and whether the first information contains a third parameter includes at least one of:

[0351] the fourth parameter indicates N2 and the first information does not contain the third parameter, determining the second set as the full set of the second ROs;

[0352] the fourth parameter indicates N2 and the first information contains the third parameter, determining the second set according to the value of the third parameter.

[0353] In this embodiment, in order to realize the differentiated setting of the first RO and the second RO associated with one SSB, the fourth parameter and the third parameter are introduced in the first information respectively, so that the network device needs to decouple the number of the first RO associated with one SSB and the number of the second RO associated with one SSB, decouple the number of the first RO available to the UE in the first RO associated with one SSB, and decouple the number of the second RO available to the UE in the second RO associated with one SSB, and then the fourth parameter and the third parameter in the first information can be used for processing.

[0354] In some embodiments, the fourth parameter indicates N2, and the first information includes a third parameter, and the second set is determined according to the value of the third parameter, including:

[0355] The N2 is greater than 1, M5 second ROs in the N2 second ROs associated with one SSB are determined according to the value of the third parameter, and a second set is determined according to the M5 second ROs; the M5 is a positive integer less than or equal to the N2.

[0356] The N2 is less than or equal to 1, and the second set is determined as the full set of the second RO.

[0357] In some embodiments, if the set of ROs available to the UE includes the first set, each first RO in the full set of the first RO is sequentially numbered, for example, sequentially numbered in the order of time domain first and frequency domain second, if the time domain first, that is, sequentially numbered in the order of time domain from early to late, and if the first ROs in the same time domain position are sequentially numbered according to the frequency domain. The frequency domain order can be from high frequency to low frequency, or from low frequency to high frequency. In one numbering, the numbering order remains the same.

[0358] In some embodiments, if the set of ROs available to the UE includes the first set, each first RO in the first set is sequentially numbered, for example, sequentially numbered in the order of time domain first and frequency domain second, if the time domain first, that is, sequentially numbered in the order of time domain from early to late, and if the first ROs in the same time domain position are sequentially numbered according to the frequency domain. The frequency domain order can be from high frequency to low frequency, or from low frequency to high frequency. In one numbering, the numbering order remains the same.

[0359] In some embodiments, if the set of ROs available for use by the UE comprises the first set, each first RO in the first set is sequentially numbered, for example, in a manner of first frequency domain and then time domain. If first frequency domain, the frequency domain order can be from low frequency to high frequency, and the ROs in FDM are sequentially numbered in ascending order of frequency domain from low to high, and then sequentially numbered in ascending order of time domain from early to late. If first frequency domain, the frequency domain order can be from high frequency to low frequency, and the ROs in FDM are sequentially numbered in ascending order of frequency domain from high to low, and then sequentially numbered in ascending order of time domain from early to late. In one numbering, the numbering order remains the same.

[0360] In some embodiments, if the set of ROs available for use by the UE comprises the first set, each first RO in the first set is sequentially numbered, for example, in a manner of first frequency domain and then time domain. If first frequency domain, the frequency domain order can be from low frequency to high frequency, and the ROs in FDM are sequentially numbered in ascending order of frequency domain from low to high, and then sequentially numbered in ascending order of time domain from early to late. If first frequency domain, the frequency domain order can be from high frequency to low frequency, and the ROs in FDM are sequentially numbered in ascending order of frequency domain from high to low, and then sequentially numbered in ascending order of time domain from early to late. In one numbering, the numbering order remains the same.

[0361] In some embodiments, if the set of ROs available for use by the UE comprises the first set, each first RO in the first set is sequentially numbered, for example, in a manner of first frequency domain and then time domain. If first frequency domain, the frequency domain order can be from low frequency to high frequency, and the ROs in FDM are sequentially numbered in ascending order of frequency domain from low to high, and then sequentially numbered in ascending order of time domain from early to late. If first frequency domain, the frequency domain order can be from high frequency to low frequency, and the ROs in FDM are sequentially numbered in ascending order of frequency domain from high to low, and then sequentially numbered in ascending order of time domain from early to late. In one numbering, the numbering order remains the same.

[0362] In some embodiments, if the set of ROs available for use by the UE comprises the first set, each first RO in the first set is sequentially numbered, for example, in a manner of first frequency domain and then time domain. If first frequency domain, the frequency domain order can be from low frequency to high frequency, and the ROs in FDM are sequentially numbered in ascending order of frequency domain from low to high, and then sequentially numbered in ascending order of time domain from early to late. If first frequency domain, the frequency domain order can be from high frequency to low frequency, and the ROs in FDM are sequentially numbered in ascending order of frequency domain from high to low, and then sequentially numbered in ascending order of time domain from early to late. In one numbering, the numbering order remains the same.

[0363] In some embodiments, if the set of ROs available to the UE includes the second set, each second RO in the full set of second ROs is sequentially numbered, for example, in the order of frequency domain first and time domain second. If frequency domain first, the frequency domain order can be from low frequency to high frequency, and the ROs in FDM are sequentially numbered in ascending order from low to high in the frequency domain, and then sequentially numbered in ascending order from early to late in the time domain. If frequency domain first, the frequency domain order can be from high frequency to low frequency, and the ROs in FDM are sequentially numbered in ascending order from high to low in the frequency domain, and then sequentially numbered in ascending order from early to late in the time domain. In one numbering, the numbering order remains the same. If the numbering of the ROs in the full set of second ROs is determined, the numbering of the ROs in the second set is also determined.

[0364] In some embodiments, if the set of ROs available to the UE includes both the first set and the second set. In one case, the first ROs in the full set of first ROs and the second ROs in the full set of second ROs can be numbered respectively. In the case of first RO and second RO numbering respectively, the aforementioned first RO and second RO numbering methods can be used.

[0365] In some embodiments, if the set of ROs available to the UE includes both the first set and the second set. In one case, the first ROs in the first set and the second ROs in the second set can be numbered respectively. In the case of first RO and second RO numbering respectively, the aforementioned first RO and second RO numbering methods can be used.

[0366] In another case, the first ROs in the full set of first ROs and the second ROs in the full set of second ROs can be numbered uniformly. In the case of uniform numbering, the first ROs and the second ROs are not distinguished, and are sequentially numbered according to the resource positions (e.g., time domain position and / or frequency domain position) of the ROs available to the UE. Of course, after completing the first RO numbering, the second RO can be numbered according to the last number of the first RO, or after completing the second RO numbering, the first RO can be numbered according to the last number of the second RO, in any case, a complete set of numbers is formed. If the numbering of the ROs in the full set of first ROs and the full set of second ROs is determined, the numbering of the ROs in the first set and the second set is also determined. In another case, the first ROs in the first set and the second ROs in the second set can be numbered uniformly. In the case of uniform numbering, the first ROs and the second ROs are not distinguished, and are sequentially numbered according to the resource positions (e.g., time domain position and / or frequency domain position) of the ROs available to the UE. Of course, after completing the first RO numbering, the second RO can be numbered according to the last number of the first RO, or after completing the second RO numbering, the first RO can be numbered according to the last number of the second RO, in any case, a complete set of numbers is formed.

[0367] In some embodiments, according to the number of ROs associated with one SSB, after the UE determines the set of available ROs, based on the sequential mapping, the UE can know the SSB associated with each RO in the set of available ROs and / or the RO in the set of available ROs associated with each SSB, or

[0368] Thus, according to the number of ROs associated with one SSB, after the UE determines the third set, based on the sequential mapping, the UE can know the SSB associated with each RO in the third set and / or the RO in the third set associated with each SSB, the third set comprising the union of the first set of ROs and / or the union of the second set of ROs.

[0369] In some embodiments, the third set comprises the union of the first set of ROs and / or the union of the second set of ROs, the third set comprising one or more fourth sets, the fourth set comprising at least one of:

[0370] the first type of RO in the first PRACH resource;

[0371] the second type of RO in the first PRACH resource;

[0372] the first type of RO in the second PRACH resource;

[0373] the second type of RO in the second PRACH resource;

[0374] the third type of RO in the first PRACH resource;

[0375] the first type of RO in the third PRACH resource;

[0376] the second type of RO in the third PRACH resource;

[0377] the third type of RO in the third PRACH resource.

[0378] Based on the first mapping criterion, sequentially map to determine the SSB associated with each RO in the fourth set and / or the RO in the fourth set associated with each SSB. The first mapping criterion is the same or different when the fourth set is different.

[0379] In some embodiments, the third set comprises the union of the first set of ROs and the union of the second set of ROs, based on the first mapping criterion, sequentially map to jointly determine the SSB associated with each RO in the third set and / or the RO in the third set associated with each SSB.

[0380] In some embodiments, the third set includes the full set of the first ROs and the full set of the second ROs, and the SSBs associated with each of the ROs in the full set of the first ROs and / or the ROs in the full set of the first ROs associated with each of the SSBs are determined based on a first mapping criterion in a sequential manner, and the SSBs associated with each of the ROs in the full set of the second ROs and / or the ROs in the full set of the second ROs associated with each of the SSBs are determined based on a second mapping criterion in a sequential manner.

[0381] In some embodiments, the third set includes the full set of the first ROs, and the SSBs associated with each of the ROs in the full set of the first ROs and / or the ROs in the full set of the first ROs associated with each of the SSBs are determined based on a first mapping criterion in a sequential manner.

[0382] In some embodiments, the third set includes the full set of the second ROs, and the SSBs associated with each of the ROs in the full set of the second ROs and / or the ROs in the full set of the second ROs associated with each of the SSBs are determined based on a first mapping criterion in a sequential manner.

[0383] The set of ROs available to the UE can be the full set or a subset of the third set, and after the set of ROs available to the UE is determined, the SSBs associated with each of the ROs in the third set and / or the ROs in the third set associated with each of the SSBs can be determined.

[0384] In some embodiments, the third set includes the full set of the first ROs and the full set of the second ROs can be determined by a protocol agreement, a higher layer configuration, or a dynamic indication.

[0385] In some embodiments, the third set includes the full set of the first ROs can be determined by a protocol agreement, a higher layer configuration, or a dynamic indication.

[0386] In some embodiments, the third set includes the full set of the second ROs can be determined by a protocol agreement, a higher layer configuration, or a dynamic indication.

[0387] In some embodiments, the ROs included in the fourth set can be determined by a protocol agreement, a higher layer configuration, or a dynamic indication.

[0388] In some embodiments, the set of ROs available to the UE includes the full set or a subset of the first set and the full set or a subset of the second set can be determined by a protocol agreement, a higher layer configuration, or a dynamic indication.

[0389] In some embodiments, the set of ROs available to the UE includes the full set or a subset of the first set can be determined by a protocol agreement, a higher layer configuration, or a dynamic indication.

[0390] In some embodiments, the set of ROs available to the UE can be determined to include a full set or a subset of the second set, through protocol agreement, higher layer configuration, or dynamic indication.

[0391] S2103: The UE and the network device determine an RO of the set of ROs available to the UE associated with the SSB, and determine a random access preamble associated with the SSB.

[0392] In some embodiments, determining the random access preamble associated with the SSB can include determining that the random access preamble associated with the SSB can be a subset of random access preambles available on the RO within the set of ROs available to the UE.

[0393] In some embodiments, S2103 can include, but is not limited to, at least one of the following:

[0394] According to a number of ROs associated with one SSB, determine the SSB associated with each RO in the third set, and determine the SSB associated with each RO in the set of ROs available to the UE;

[0395] According to a number of ROs associated with one SSB, determine the SSB associated with each RO in the set of ROs available to the UE;

[0396] According to a number of random access preambles associated with one SSB and an index, determine the random access preamble associated with each SSB.

[0397] In some embodiments, the first information can further include configuration information for configuring the random access preambles available to the UE. For example, the first information can further include index information and / or set information of the random access preambles available to the UE, etc.

[0398] For example, the first information can carry identification information of one or more sets of random access preambles available to the UE.

[0399] In some embodiments, the first type of UE and the second type of UE can be distinguished according to whether they support SBFD time units. For example, the first type of UE supports SBFD, and this type of UE can be referred to as SBFD aware UE. For example, the SBFD aware UE is a UE that can identify SBFD time units. The second type of UE is different from the second type of UE. For example, the second type of UE can be a non-SBFD aware UE. For example, the second type of UE can be a UE that cannot identify SBFD time units.

[0400] In some embodiments, one SSB can be associated with one or more random access preambles, and the preconfigured set of random access preambles can include one or more random access preambles. These random access preambles all have corresponding numbers.

[0401] In this case, the random access preambles associated with each SSB are determined in sequence according to the association of the random access preambles with the SSBs. For example, the SSBs are mapped (i.e., associated) with the random access preambles according to the order of the SSB numbers. In other embodiments, for example, the SSB numbers are mapped with the random access preamble numbers from small to large, or the SSB numbers are mapped with the random access preamble numbers from large to small, and the like. In this way, the number of random access preambles associated with one SSB is determined, the starting associated SSB and the random access preamble are determined, and then the random access preambles associated with each SSB are determined. For example, the UE initiates random access in the beam direction of the SSB X , and the random access preamble associated with the SSB X is used to initiate random access.

[0402] In some embodiments, if the first type of UE and the second type of UE share the same random access preamble, the effective utilization of the random access preamble can be improved, and the competition degree of random access, especially contention-based random access, can be reduced.

[0403] In some embodiments, if the first type of UE and the second type of UE are configured with different random access preamble sets, the network device can identify the UE when receiving the random access request of the UE, and can consider using the SBFD time unit when performing subsequent communication resource for the UE. The SBFD time unit can be an SBFD time slot, an SBFD symbol, or the like.

[0404] Therefore, whether the first type of UE and the second type of UE are configured with the same random access preamble set can be determined according to the current communication environment. For example, when the current network environment is good, different random access preamble sets can be configured for different types of UEs. For another example, when the current network environment is good, the same random access preamble set can be configured for different types of UEs.

[0405] In some embodiments, the UE can use the RO that the UE can use to perform two-step random access and / or four-step random access. In some embodiments, the UE can use the RO that the UE can use to perform contention-based random access and / or non-contention-based random access.

[0406] In some embodiments, the first type of UE and the second type of UE share the first set, and the first information is further used to configure the first type of UE and the second type of UE with the same random access preamble set in the first set.

[0407] In this case, the first type of UE and the second type of UE share the same random access preamble.

[0408] In some embodiments, the first type of UE can be an SBFD aware UE, and the second type of UE can be a non-SBFD-aware UE. Illustratively, the first type of UE can identify the ROs in the first set and the second set. The second type of UE can identify the ROs in the first set.

[0409] In other embodiments, the first type of UE and the second type of UE share the first set, and the first information is further used to configure the first type of UE and the second type of UE with different sets of random access preambles in the first set.

[0410] In some embodiments, the first type of UE and the second type of UE share the first set and are configured with the same set of random access preambles, the first type of UE uses the first set to send PRACH signals for random access, and the first type of UE cannot use the uplink (UL) sub-band of the SBFD time unit within the downlink (DL) time unit to send the physical uplink shared channel (PUSCH) information of Msg3 or MsgA for random access.

[0411] In this case, if the first type of UE and the second type of UE share the same random access set, the first type of UE uses the first set to send PRACH signals for random access, and the first type of UE does not use the UL sub-band of the DL SBFD time unit to send Msg3 or MsgA-PUSCH. The second type of UE cannot use the UL sub-band of the DL SBFD time unit to send Msg3 or MsgA-PUSCH by default. At this time, the network side cannot distinguish between the first type of UE and the second type of UE, and when the actual initiator of random access is the second type of UE, the network side can avoid scheduling the second type of UE to send Msg3 or MsgA-PUSCH in the UL sub-band of the DL SBFD time unit, which can reduce the occurrence of invalid scheduling information.

[0412] In some embodiments, the first type of UE and the second type of UE share the first set and are configured with the same set of random access preambles, the first type of UE uses the first set to send PRACH signals for random access, and the first type of UE can use the uplink (UL) sub-band of the SBFD time unit within the downlink (DL) time unit to send the physical uplink shared channel (PUSCH) information of Msg3 or MsgA for random access.

[0413] The Msg3 or MsgA-PUSCH of the first type of UE can be sent using the UL sub-band of the SBFD time unit within the DL time unit, so that the network device can distinguish the type of UE according to whether the time unit in which the Msg3 or MsgA-PUSCH is sent is the UL sub-band of the SBFD time unit within the DL time unit, and the latency of the random access process of the first type of UE can be reduced.

[0414] S2104: The UE and the network device determine an association period.

[0415] In some embodiments, at least one association period is determined according to the criterion that each SSB is associated to the RO of the third set at least once in one association period, and the configuration period of the PRACH resource, the third set including the full set of the first RO and / or the full set of the second RO. For example, in one association period, each configured SSB needs to complete mapping with the RO of the third set at least once, so that UEs in different locations in the cell can all initiate random access using the beam in which the corresponding SSB is located.

[0416] In some embodiments, at least one association period is determined according to the criterion that each SSB is associated to the RO of the set of ROs available to the UE at least once in one association period, and the configuration period of the PRACH resource.

[0417] For example, in one association period, each configured SSB needs to complete mapping with the RO of the set of ROs available to the UE at least once, so that UEs in different locations in the cell can all initiate random access using the beam in which the corresponding SSB is located.

[0418] In the embodiments of the present disclosure, one or more association periods can be determined according to the PRACH configuration of the first information and the configuration period of the PRACH resource determined according to the PRACH configuration of the first information. The lengths of different types of association periods are the same or different.

[0419] Exemplarily, the configuration period of the PRACH resource is also the period of the PRACH resource. Exemplarily, the association period can be an integer multiple of the configuration period of the PRACH resource, which can be represented by X. The alternative values of X can be preconfigured. That is, the actual value of X is different, and the length of the association period is different. In the embodiments of the present disclosure, the minimum value of the alternative values of X that can achieve the criterion that each SSB completes association (mapping) at least once can be selected according to the criterion that each SSB completes association (mapping) at least once.

[0420] Table 1 is a schematic table of the multiple relationship between the configuration period of the PRACH resource and the association period.

[0421] Table 1

[0422] Assuming that the PRACH configuration period is 10 ms, the candidate values of X can be 1, 2, 4, 8 or 16. In this case, the ROs are configured according to the first information, and the SSBs are configured. When the value of X is 8 or 16, each SSB can complete at least one mapping with the ROs configured by the first information. If the value of X is minimized based on the criteria of the above association (mapping), the actual value of X at this time is 8. That is, the length of the association period at this time is 80 ms.

[0423] In some embodiments, the length of the association period should not exceed a preset value. Exemplarily, the length of the association period should not exceed 160 ms.

[0424] In some embodiments, the values of X of different association periods are the same or different.

[0425] In some embodiments, the length of the association period is X times the PRACH configuration period, and X is the minimum value of the candidate values of X determined by Table 1 that satisfies condition 1.

[0426] Condition 1: In the association period, each of the N SSBs is mapped to the RO at least once. Assuming that N represents the number of SSBs, N can be determined according to the SSB burst set position (ssb-PositionsInBurst) in the system information block (SIB) 1 or the serving cell common configuration (ServingCellConfigCommon).

[0427] Mapping each of the N SSBs to the RO once can be referred to as one-cycle mapping. After M-cycle mappings in the association period, if there are not enough ROs or random access preambles for one-cycle mapping, no SSBs will be mapped to these remaining ROs or random access preambles.

[0428] In FIG. 1E, the PRACH configuration period is 20 ms, and there are 12 valid ROs in the PRACH configuration period. Here, the valid RO can be an RO that can be used by the UE. There are 8 SSBs in total, one SSB is mapped to one valid RO, one SSB is associated with 64 random access preambles, and SSBs #0, 1, 2, 3, 4, 5, 6 and 7 are mapped to ROs #0, 1, 2, 3, 4, 5, 6 and 7, respectively. At this time, one PRACH configuration period can enable each of the N SSBs to be mapped to the RO at least once, the value of X at this time is 1, and the length of the association period is 20 ms.

[0429] S2105: The UE and the network device determine an association pattern period.

[0430] In some embodiments, the association pattern period comprises one or more association periods.

[0431] In some embodiments, the UE and the network device determine the association pattern period according to the determined association period.

[0432] In some embodiments, the distribution of the at least one association period of any two of the association pattern periods is the same. In some embodiments, the distribution of the association periods forms a pattern, and such a period is referred to as an association pattern period.

[0433] For example, the association periods include three types, namely, association period #1, association period #2, and association period #3. For example, the association pattern period can include each type of association period at least once. For example, assuming that the order of the association periods in the first association pattern period is: association period #2, association period #1, and association period #3, then in any subsequent association pattern period, it is association period #2, association period #1, and association period #3. FIG. 2D shows a schematic diagram of an association period and an association pattern period. One association period corresponds to a sub-pattern in the association pattern period. In some embodiments, the association pattern period (Association pattern period) can include Y association periods (association period), so that the time length of the pattern (pattern) of SSB and valid RO mapping does not exceed 160 ms. The valid RO here can be the RO that can be used by the UE.

[0434] In some embodiments, within a time length of 160 ms, after an integer multiple of the association period, the remaining valid RO cannot be mapped once, and then no SSB is mapped to these remaining valid ROs, and the remaining valid ROs are not used for PRACH signal transmission. In some embodiments, the time lengths of different association periods in the Y association periods (association period) can be different. For example, the time lengths of association period #1, association period #2, and association period #3 are 40 ms, 80 ms, and 20 ms, respectively. When Y = 3, the association pattern period is 140 ms.

[0435] In some embodiments, the first type of UE and the second type of UE share the first set and are configured with the same set of random access preambles, the first type of UE uses the first set to send PRACH signals of random access, the first type of UE cannot use the uplink (UL) sub-band of the SBFD time unit within the downlink (DL) time unit to send the physical uplink shared channel (PUSCH) information of Msg3 or MsgA of random access. In this case, even if the first type of UE has the capability to use the UL sub-band of the SBFD time unit within the DL time unit to send the Msg3 or MsgA PUSCH information, the first type of UE does not use the UL sub-band of the SBFD time unit within the DL time unit to send the Msg3 or MsgA PUSCH information. The second type of UE cannot use the UL sub-band of the DL SBFD time unit to send the Msg3 or MsgA-PUSCH by default. At this time, the network side cannot distinguish between the first type of UE and the second type of UE, and when the second type of UE actually initiates random access, the network side can avoid scheduling the second type of UE to send the Msg3 or MsgA-PUSCH in the UL sub-band of the DL SBFD time unit, and the occurrence of invalid scheduling information can be reduced

[0436] In some embodiments, the first type of UE and the second type of UE share the first set and are configured with the same set of random access preambles, the first type of UE uses the first set to send PRACH signals of random access, the first type of UE can use the uplink (UL) sub-band of the SBFD time unit within the downlink (DL) time unit to send the physical uplink shared channel (PUSCH) information of Msg3 or MsgA of random access.

[0437] In the embodiments of the present disclosure, the capability of the first type of UE to use the uplink (UL) sub-band of the SBFD time unit within the downlink (DL) time unit to send the physical uplink shared channel (PUSCH) information of Msg3 or MsgA of random access also allows the first type of UE to use the UL sub-band of the SBFD time unit within the DL time unit to send the Msg3 or MsgA PUSCH information, so that the first type of UE can use the time resource closest to the current time to send information as much as possible, thereby accelerating the completion of random access of the first type of UE.

[0438] In some embodiments, the first type of UE and the second type of UE share the first set and are configured with different sets of random access preambles, the first type of UE uses the first set to send PRACH signals of random access, and the first type of UE can use the uplink (UL) sub-band of the SBFD time unit within the downlink (DL) time unit to send the physical uplink shared channel (PUSCH) information of Msg3 or MsgA of random access.

[0439] In this embodiment, the first type of UE and the second type of UE share the first set, but are configured with different random access preamble sets, then when the first type of UE and the second type of UE perform random access, the network device can distinguish the type of UE or identify the type of UE according to the random access preamble used by the UE to initiate random access, so that the network device can perform subsequent service data and / or signaling transmission for the UE according to the type of UE after the UE performs random access.

[0440] In some embodiments, the first type of UE uses the second set to send a PRACH signal of random access, and the first type of UE can use an uplink (UL) sub-band of a SBFD time unit within a DL time unit to send physical uplink shared channel (PUSCH) information of a third message (Msg3 or MsgA).

[0441] If the first type of UE uses the second set to send a PRACH signal, it means that the first type of UE initiates random access using the second RO, and the PRACH signal can at least include a random access request, for example, the PRACH signal can correspond to a random access preamble. For example, in the case where the first type of UE needs to urgently complete random access, the first type of UE can be allowed to initiate random access using the second RO, and allowed to use an UL sub-band on a SBFD time unit within a DL time unit to send Msg3 or MsgA-PUSCH information, so as to complete random access as quickly as possible.

[0442] In some embodiments, the first type of UE and the second type of UE share the first set and are configured with different random access preamble sets, the first type of UE uses the first set to send a PRACH signal of random access, and the first type of UE cannot use an uplink (UL) sub-band of a SBFD time unit within a downlink (DL) time unit to send physical uplink shared channel (PUSCH) information of a third message (Msg3 or MsgA) of random access.

[0443] In some embodiments, the RO in the third set is a valid RO, and the RO in the set of ROs that the UE can use is a valid RO. After determining the RO that can be used, it is further determined whether the RO that the UE can use is a valid RO, and finally the UE initiates random access using the RO that the UE can use and that is valid.

[0444] The condition for determining that one of the one or more types of ROs in the first type of RO, the second type of RO, and the third type of RO is a valid RO can include at least one of the following:

[0445] Condition 1: The RO is within an UL symbol configured by TDD-UL-DL-ConfigCommon, and the UL symbol is not configured as a SBFD symbol.

[0446] Condition 2: In one PRACH slot, the RO is not before a Synchronization Signal and (Physical Bradcast Channnel, PBCH) block (SSB); that is, all the ROs in one PRACH slot are configured after the SSB.

[0447] Condition 3: The RO is at least Ngap1 symbols apart from the symbol where the last SSB is located, and Ngap1 is an integer greater than or equal to 0; Ngap1 can be agreed by protocol.

[0448] Condition 4: The RO has no overlap in time domain with the SSB on non-SBFD symbols.

[0449] Condition 5: The RO has no overlap in time domain with the SSB on SBFD symbols.

[0450] Condition 6: The RO is at least Ngap2 symbols apart from the DL symbol configured as DL by TDD-UL-DL-ConfigCommon, and the DL symbol is not configured as SBFD symbol, and Ngap2 is an integer greater than or equal to 0.

[0451] Condition 7: The RO has no overlap with the UL sub-band outside on SBFD symbols. Ngap2 can be agreed by protocol. Ngap1 can be equal to Ngap2.

[0452] Condition 8: The RO is not configured on both SBFD and non-SBFD symbols.

[0453] Condition 9: The RO is on SBFD symbols.

[0454] Condition 10: The RO is on non-SBFD symbols.

[0455] Condition 11: The RO has no overlap in time domain with the SSB on SBFD symbols.

[0456] In some embodiments, the condition for determining whether one RO of the first type is valid is the first condition, the condition for determining whether one RO of the second type is valid is the second condition, and the condition for determining whether one RO of the third type is valid is the third condition, and the first condition, the second condition, and the third condition are the same or different.

[0457] The physical random access channel resource determination method related to the embodiments of the present disclosure can include at least one of S2101-S2105. For example, any one of S2101-S2105 can be implemented as an independent embodiment. For example, the network device can send the first information alone, and can not participate in the determination of the set of ROs available to the UE, the determination of the SSB associated with each RO in the set of ROs, the determination of the random access preamble associated with the SSB, and the network device can only receive the PRACH signal sent by the UE on the configured RO, so the subsequent S2102-S2105 performed by the network device are optional steps.

[0458] In some embodiments, S2102-S2104 can not have a certain sequence, for example, S2102-S2105 can be executed in parallel, or can be executed in sequence. For example, after the set of ROs available to the UE is determined, the SSB associated with each RO in the set of ROs available to the UE and the associated random access preamble can be determined synchronously. For another example, the UE and the network device can first determine the set of ROs available to the UE, the associated period, and the associated pattern period, and then determine the SSB associated with each RO in the set of ROs available to the UE and the random access preamble associated with one SSB.

[0459] As shown in FIG. 3, the embodiments of the present disclosure provide a physical random access channel resource determination method, which is executed by a UE, and the method can include:

[0460] S3101: receiving first information.

[0461] In some embodiments, the UE receives the first information sent by the network device.

[0462] In some embodiments, the UE receives the first information broadcasted, multicast or unicast by the network device. For example, the related description of the first information can refer to the related description of the corresponding embodiment of FIG. 2A, which will not be repeated here.

[0463] S3102: determining a set of ROs available to the UE.

[0464] In some embodiments, the UE determines the set of ROs available according to the first information.

[0465] In some embodiments, the UE determining the set of ROs available can refer to S2102 of the corresponding embodiment of FIG. 2A.

[0466] S3103: the UE determines the SSB associated with each RO in the set of ROs available to the UE.

[0467] In some embodiments, the UE determining the SSB associated with each RO in the set of ROs available to the UE can refer to S2103 of the corresponding embodiment of FIG. 2A.

[0468] S3104: Determine the association period.

[0469] In some embodiments, the UE determines the association period according to the first information. For example, the UE can determine the association period in the manner described in S2104 of the corresponding embodiment of FIG. 2A. For example, the association period can be described in the corresponding embodiment of FIG. 2A, which will not be repeated here.

[0470] S3105: Determine the association pattern period.

[0471] In some embodiments, the association pattern period can be described in the corresponding embodiment of FIG. 2A, which will not be repeated here.

[0472] In some embodiments, the UE can determine the association pattern period in the manner described in S2105 of FIG. 2A.

[0473] It is worth noting that one or more of S3101 to S3105 can be implemented separately. For example, the UE can receive the first information sent by the network device, but whether to determine the available RO set, the SSB associated with each RO in the available RO set, the random access preamble associated with the SSB, the association period, and / or the association pattern period, etc. Steps can be performed when the UE needs it. For example, the UE is currently in an RRC connected state, at this time there is no need for random access or the probability of using RO is low, and S3102 to S3105 can not be executed. In some embodiments, S3104 and S3103, or S3105 and S3103 do not have a fixed order, and can be executed simultaneously or sequentially. For example, S3104 and S3105 are executed first, and then S3103 is executed. In the embodiment shown in FIG. 3, S3103 is executed first, and then S3104 and S3105 are executed.

[0474] As shown in FIG. 4, the embodiment of the present disclosure provides a physical random access channel resource determination method, which is executed by a network device. The method can include:

[0475] S4101: Send first information.

[0476] In some embodiments, the network device sends the first information to the UE.

[0477] In some embodiments, the network device broadcasts, multicasts, or unicasts the first information. For example, the related description of the first information can be described in the corresponding embodiment of FIG. 2A, which will not be repeated here.

[0478] S4102: Determine the set of ROs that the UE can use.

[0479] In some embodiments, the UE determines the set of ROs that can be used according to the first information.

[0480] In some embodiments, the UE determines the set of ROs that can be used can refer to S2102 of the corresponding embodiment of FIG. 2A.

[0481] S4103: Determine the SSBs associated with each RO in the set of ROs that the UE can use and the random access preambles associated with the SSBs.

[0482] In some embodiments, the manner in which the UE determines the SSBs associated with each RO in the set of ROs that the UE can use can refer to S2103 of the corresponding embodiment of FIG. 2A.

[0483] S4104: Determine the association period.

[0484] In some embodiments, the UE determines the association period according to the first information, and specifically, the manner in which the UE determines the association period can refer to S2104 of the corresponding embodiment of FIG. 2A. For example, the description of the association period can refer to the corresponding embodiment of FIG. 2A, which will not be repeated here.

[0485] S4105: Determine the association pattern period.

[0486] In some embodiments, the description of the association pattern period can refer to the description of the corresponding embodiment of FIG. 2A, which will not be repeated here.

[0487] In some embodiments, the manner in which the UE determines the association pattern period can refer to S2105 of the corresponding embodiment of FIG. 2A.

[0488] It is worth noting that one or more of S4101 to S4105 can be implemented separately. For example, the UE can receive the first information sent by the network device, but whether to determine the set of available ROs, the SSBs associated with each RO in the set of available ROs, the random access preambles associated with the SSBs, the association period, and / or the association pattern period, etc. Steps can be performed when the UE needs it. For example, the UE is currently in an RRC connected state, at this time there is no need for random access or the probability of using RO is low, and S4102 to S4105 can not be executed. In some embodiments, S4104 and S4103, or S4105 and S4103 do not have a fixed order, and can be executed simultaneously or sequentially, for example, S4104 and S4105 are executed first, and then S4103 can be executed. While in the embodiment shown in FIG. 4, S4103 is executed first, and then S4104 and S4105 are executed.

[0489] In some embodiments, the term "information" can be mutually replaced with the terms "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "field", "data", and the like.

[0490] In some embodiments, "acquire", "obtain", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be mutually replaced, which can be interpreted as receiving from other subjects, acquiring from protocols, acquiring from higher layers, obtaining by self-processing, autonomously implementing, and the like. The protocols include at least one of 3GPP protocols, Wi-Fi protocols, audio and / or video protocols.

[0491] In some embodiments, the term "send" can be mutually replaced with the terms "transmit", "report", "transmit", and the like.

[0492] The physical random access channel resource determination method related to the embodiments of the present disclosure can include at least one of S4101-S4103. For example, any one of S4101-S4103 can be implemented as an independent embodiment. For example, the second node receives the second sensing task request, but can refuse to perform the sensing task, and S4102 and S4103 are not executed. For another example, the second node receives the second sensing task request to start the execution of the sensing task, directly returns the second sensing data and / or the second sensing result to the first node, and can skip the sending of the second sensing task response, that is, S4102 is an optional step.

[0493] In some embodiments, for the SBFD-aware UE, the SSB is mapped to the first RO resource set according to the first mapping criterion, and the first RO resource set specifically includes the legacy RO and / or the additional RO, and the set of ROs that the UE can use is determined. The set of ROs that the UE can use specifically includes the legacy RO and / or the additional RO used by the SBFD-aware UE. The set of ROs that the UE can use is a subset of the first RO resource set.

[0494] In some embodiments, the first mapping criterion can be determined according to a parameter ssb-perRACH-OccasionAndCB- Random Access Preamble (Preamble) sPerSSB CHOICE{one n64}, i.e. one SSB maps (associates) one RO, and one SSB associates 64 random access preambles.

[0495] The determining the ROs available for the UE to use can include determining legacy ROs available for the UE to use, and determining additional ROs available for the UE to use.

[0496] The terminal side: the SBFD aware UE terminal determines the SSB associated RO and random access preamble (Random Access Preamble (Preamble)) by the following method, determines the association period (association period) and association pattern period (association Pattern period).

[0497] In some embodiments, the SSBs are mapped to the first RO resource set according to the first mapping criterion, the first RO resource set containing ROs and random access preambles (Preambles) contained in the ROs, the association period (association period) and the association pattern period (association Pattern period) are determined, and the RO set available for the UE to use is determined, the RO set containing ROs and random access preambles (Preambles) contained in the ROs.

[0498] In some embodiments, the SSBs are mapped to the RO set available for the UE to use according to the first mapping criterion, the RO set containing ROs and random access preambles (Preambles) contained in the ROs, the association period (association period) and the association pattern period (association Pattern period) are determined, and the RO set available for the UE to use is determined, the RO set containing ROs and random access preambles (Preambles) contained in the ROs.

[0499] The first RO resource set contains at least one of the following:

[0500] The full set of RO sets composed of legacy ROs;

[0501] The full set of RO sets composed of additional ROs.

[0502] The RO set available for the UE to use contains at least one of the following:

[0503] a superset or a subset of a set of ROs consisting of legacy ROs;

[0504] a superset or a subset of a set of ROs consisting of additional ROs.

[0505] The set of ROs available to the UE is a subset of the first set of RO resources. The set of ROs available to the UE can be referred to as a third set of RO resources.

[0506] In some embodiments, the legacy ROs are the first ROs. The additional ROs can be the second ROs. In some embodiments, the legacy ROs are at least one of: first-type ROs in the first PRACH resources; second-type ROs in the first PRACH resources; first-type ROs in the second PRACH resources; second-type ROs in the second PRACH resources.

[0507] In some embodiments, the additional ROs are at least one of: third-type ROs in the first PRACH resources; first-type ROs in the third PRACH resources; second-type ROs in the third PRACH resources; third-type ROs in the third PRACH resources.

[0508] In some embodiments, the first set of RO resources comprises one or more second sets of RO resources, and the second sets of RO resources comprise at least one of: first-type ROs in the first PRACH resources; second-type ROs in the first PRACH resources; first-type ROs in the second PRACH resources; second-type ROs in the second PRACH resources; third-type ROs in the first PRACH resources; first-type ROs in the third PRACH resources; second-type ROs in the third PRACH resources; third-type ROs in the third PRACH resources.

[0509] In some embodiments, the SSBs associated with each of the ROs in the second set of RO resources and / or the ROs in the second set of RO resources associated with each of the SSBs are determined based on sequentially mapping, according to a first mapping criterion. The first mapping criterion is the same or different when the second sets of RO resources are different.

[0510] In some embodiments, the first set of RO resources comprises a superset of the first ROs and a superset of the second ROs, and the SSBs associated with each of the ROs in the first set of RO resources are jointly determined based on sequentially mapping, according to a first mapping criterion.

[0511] In some embodiments, the first RO resource set includes a full set of the first ROs and a full set of the second ROs, each RO in the full set of the first ROs is associated with an SSB based on a first mapping criterion, and each RO in the full set of the second ROs is associated with an SSB based on a second mapping criterion. The first mapping criterion and the second mapping criterion are the same or different. In this case, the SSBs are respectively mapped to each RO in the full set of the first ROs and each RO in the full set of the second ROs.

[0512] In some embodiments, the first RO resource set includes a full set of the first ROs, each RO in the full set of the first ROs is associated with an SSB based on a first mapping criterion.

[0513] In some embodiments, the first RO resource set includes a full set of the second ROs, each RO in the full set of the second ROs is associated with an SSB based on a first mapping criterion and / or each SSB is associated with a set of ROs in the full set of the second ROs.

[0514] The set of ROs available to the UE is a full set or a subset of the first RO resource set. After the set of ROs available to the UE is determined, the SSBs associated with the ROs in the first RO resource set can be multiplexed, and the association between the ROs in the set of ROs available to the UE and the SSBs can be determined.

[0515] In some embodiments, it can be determined by a protocol agreement, a higher layer configuration or a dynamic indication that the first RO resource set includes a full set of the first ROs and a full set of the second ROs.

[0516] In some embodiments, it can be determined by a protocol agreement, a higher layer configuration or a dynamic indication that the first RO resource set includes a full set of the first ROs.

[0517] In some embodiments, it can be determined by a protocol agreement, a higher layer configuration or a dynamic indication that the first RO resource set includes a full set of the second ROs.

[0518] In some embodiments, it can be determined by a protocol agreement, a higher layer configuration or a dynamic indication that the second RO resource set includes the ROs.

[0519] In some embodiments, it can be determined by a protocol agreement, a higher layer configuration or a dynamic indication that the set of ROs available to the UE includes a full set or a subset of a set of ROs consisting of the legacy ROs and a full set or a subset of a set of ROs consisting of the additional ROs.

[0520] In some embodiments, the set of ROs available to the UE can be determined by a protocol agreement, higher layer configuration or dynamic indication to include a full set or a subset of the set of ROs consisting of the legacy ROs.

[0521] In some embodiments, the set of ROs available to the UE can be determined by a protocol agreement, higher layer configuration or dynamic indication to include a full set or a subset of the set of ROs consisting of the additional ROs.

[0522] A subset of the set of ROs consisting of the legacy ROs in the set of ROs available to the UE includes at least one of the following:

[0523] N1 is greater than 1 and the first parameter (msgA-SSB-SharedRO-MaskIndex-r16) is configured, the first parameter configures M1 legacy ROs out of the N1 legacy ROs associated with one SSB for SBFD aware UEs, M1 is an integer less than or equal to N1.

[0524] N1 is greater than 1 and the first parameter is not configured, the subset of the set of ROs consisting of the legacy ROs is the set of ROs consisting of the legacy ROs.

[0525] N1 is less than or equal to 1, the subset of the set of ROs consisting of the legacy ROs is the set of ROs consisting of the legacy ROs.

[0526] A subset of the set of ROs consisting of the additional ROs includes at least one of the following:

[0527] N2 is greater than 1 and the second parameter (msgA-SSB-SharedRO-MaskIndex-r16-additional RO) is configured, the second parameter configures M2 additional ROs out of the N2 additional ROs associated with one SSB for SBFD aware UEs, M2 is an integer less than or equal to N2.

[0528] N2 is greater than 1 and the second parameter is not configured, the subset of the set of ROs consisting of the additional ROs is the set of ROs consisting of the additional ROs.

[0529] Optionally, the second parameter can be the same parameter as the first parameter or can be a different parameter.

[0530] N2 is less than or equal to 1, and a subset of the RO set consisting of additional ROs is the RO set consisting of additional ROs.

[0531] Optionally, N1 and N2 are the same or different. When N1 and N2 are the same, the value of N1 and N2 can be determined using the same or different parameters. Illustratively, when N1 and N2 are different, N1 is determined according to the parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB, and N2 is determined according to the parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB-additional. Illustratively, when N1 and N2 are the same, N1 and N2 are determined according to the parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB. Illustratively, when N1 and N2 are the same, N1 is determined according to the parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB, and N2 is determined according to the parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB-additional.

[0532] The protocol defaults / higher layers configure the RO set that the UE can use to contain legacy ROs and / or additional ROs.

[0533] The protocol agrees / higher layers configure the ROs contained in the additional ROs.

[0534] The protocol agrees / higher layers configure the ROs contained in the legacy ROs.

[0535] In some embodiments, the PRACH resource configuration information can be configured with a first PRACH resource, a second PRACH resource, and / or a third PRACH resource.

[0536] Illustratively, the first PRACH resource, the second PRACH resource, and / or the third PRACH resource are defined as follows:

[0537] First configuration: the first PRACH configures the first PRACH resource, and the first PRACH resource is used for legacy UEs and SBFD aware UEs

[0538] Second configuration: second PRACH third PRACH configures second PRACH resource, the second PRACH resource is used for legacy UE and SBFD aware UE and third PRACH resource is used for SBFD aware UE

[0539] Third configuration: first PRACH configures first PRACH resource and third PRACH resource, the first PRACH resource is used for legacy UE and SBFD aware UE, and the third PRACH resource is used for SBFD aware UE.

[0540] Second PRACH fourth configuration: configure second PRACH resource, the second PRACH resource is used for legacy UE and SBFD aware UE.

[0541] The first PRACH resource includes at least one of the following: first type RO, second type RO and / or third type RO.

[0542] The SBFD aware UE can use at least one of the first type RO, the second type RO and the third type RO of the first PRACH resource, and the legacy UE can use at least one of the first type RO and the second type RO of the first PRACH resource.

[0543] The second PRACH resource includes at least one of the following: first type RO, second type RO.

[0544] The SBFD aware UE can use at least one of the first type RO and the second type RO of the second PRACH resource, and the legacy UE can use at least one of the first type RO and the second type RO of the second PRACH resource.

[0545] The third PRACH resource includes at least one of the following: first type RO, second type RO, third type RO.

[0546] The SBFD aware UE can use at least one of the first type RO, the second type RO and the third type RO of the third PRACH resource.

[0547] The definitions of the first type RO, the second type RO and the third type RO are as follows: the time resource of the first type RO only contains non-SBFD symbol.

[0548] The second type RO can also contain SBFD symbol (SBFD on F) at F symbol but does not contain SBFD symbol (SBFD on DL) at DL symbol.

[0549] SBFD time units on flexible time units can include: SBFD time units on time units configured as F by TDD-UL-DL-ConfigCommon, and / or SBFD symbols configured on any time units in time domain when there is no TDD-UL-DL-ConfigCommon configuration.

[0550] SBFD time units on DL time units can include: SBFD symbols at DL symbols configured as DL by TDD-UL-DL-ConfigCommon, and / or SBFD symbols configured on any time units in time domain when there is no TDD-UL-DL-ConfigCommon configuration.

[0551] The third type of RO contains SBFD symbols at DL symbols (SBFD on DL).

[0552] Optionally, in the legacy RO shared by SBFD aware UEs and legacy UEs, the same or different set of random access preambles (Preamble) is configured for SBFD aware UEs and legacy UEs.

[0553] Optionally, in the legacy RO shared by SBFD aware UEs and legacy UEs, the same set of random access preambles (Preamble) is configured for SBFD aware UEs and legacy UEs, and SBFD aware UEs cannot use UL subbands in SBFD symbols at DL symbols to transmit Msg3 and / or MsgA-PUSCH by default when SBFD aware UEs use the shared legacy RO to transmit PRACH information.

[0554] Optionally, in the legacy RO shared by SBFD aware UEs and legacy UEs, the same set of random access preambles (Preamble) is configured for SBFD aware UEs and legacy UEs, and SBFD aware UEs can use UL subbands in SBFD symbols at DL symbols to transmit Msg3 and / or MsgA-PUSCH by default when SBFD aware UEs use the shared legacy RO to transmit PRACH information.

[0555] Optionally, when different sets of random access preambles (Preamble) are configured for SBFD aware UE and legacy UE in the shared legacy RO, SBFD aware UE can use UL sub-band in SBFD symbol at DL symbol to transmit Msg3 and / or MsgA-PUSCH when SBFD aware UE uses the shared legacy RO to transmit PRACH information.

[0556] Optionally, when different sets of random access preambles (Preamble) are configured for SBFD aware UE and legacy UE in the shared legacy RO, SBFD aware UE can use UL sub-band in SBFD symbol at DL symbol to transmit Msg3 and / or MsgA-PUSCH when SBFD aware UE uses the shared legacy RO to transmit PRACH information.

[0557] Optionally, when different sets of random access preambles (Preamble) are configured for SBFD aware UE and legacy UE in the shared legacy RO, SBFD aware UE can use UL sub-band in SBFD symbol at DL symbol to transmit Msg3 and / or MsgA-PUSCH when SBFD aware UE uses the shared legacy RO to transmit PRACH information.

[0558] The above scheme can be used for 4-step random access and / or 2-step random access of UE.

[0559] The above scheme can be used for Contention Based Random Access (CBRA) and Contention Free Random Access (CFRA) of UE.

[0560] In the above embodiment, the RO is valid RO, and the valid RO is available for UE.

[0561] The above scheme can be used for 4-step random access with PRACH repetition transmission, such as 4-step CBRA with PRACH repetition transmission, 4-step CFRA with PRACH repetition transmission.

[0562] Base station side: The base station determines the SSB associated RO and random access preamble (Preamble) by the following method, determines the association period (association period) and association pattern period (association Pattern period) by the following method.

[0563] The SSB is mapped to the first RO resource set according to the first mapping criterion, which contains RO and the random access preamble (Preamble) contained in the RO, determines the association period (association period) and the association pattern period (association Pattern period), and determines the RO set that the UE can use, which contains RO and the random access preamble (Preamble) contained in the RO.

[0564] The SSB is mapped to the RO set that the UE can use according to the first mapping criterion, which contains RO and the random access preamble (Preamble) contained in the RO, determines the association period (association period) and the association pattern period (association Pattern period). The specific method is described in the terminal side scheme 1, which is not repeated here.

[0565] The SSB is mapped to the RO set that the UE can use according to the first mapping criterion, which contains RO and the random access preamble (Preamble) contained in the RO, determines the association period (association period) and the association pattern period (association Pattern period)

[0566] In the following embodiments, the second RO resource set is used as an example. The examples in the following embodiments are applicable to the third RO resource set, which is not repeated here.

[0567] The first configuration: Configuration 1 set of RACH resources is used for originally (legacy) UE and SBFD aware UE, called first PRACH resource. The originally (legacy) RO contains the first type RO and the second type RO in the first PRACH resource, and the additional RO contains the third type RO in the first PRACH resource. In the first PRACH resource, the PRACH configuration period is 20ms, the RO is configured in the even frame, there are 8 additional valid ROs, 4 originally valid ROs and 8 SSBs in the PRACH configuration period.

[0568] A specific example is as follows: the first RO resource set includes legacy RO and additional RO, the second RO resource set is legacy RO, the second mapping criterion is used, and the second RO resource set is additional RO. The third mapping criterion is used, the second mapping criterion and the third mapping criterion are the same, one SSB is mapped to one RO, and the number of random access preambles (Preamble) contained in the RO associated with one SSB is 16. The difference between the second mapping criterion and the third mapping criterion is that the maximum number of ROs that can be associated with one SSB is different, and / or the number of ROs actually associated with one SSB is different. Exemplarily, the mapping relationship (association relationship) between the SSB and the RO can be as shown in FIG. 5A. In the embodiment of the present disclosure, the valid RO is the RO available to the UE. The legacy valid RO can be the first RO of the second RO resource set. The additional valid RO can be the second RO of the second RO resource set.

[0569] Option 1: When the second RO resource set is legacy RO, SSB#0-7 is mapped to the legacy valid RO in time slots #4, #9, #24, and #29, at this time, the association period contains 2 PRACH configuration periods, that is, the association period is 40 ms. When there is only one association period, the association pattern period contains one association period. The length of the association pattern period is 40 ms.

[0570] Option 2: When the second RO resource set is additional RO, SSB#0-7 is mapped to the additional valid RO in time slots #2, #3, #7, and #8, at this time, the association period contains 1 PRACH configuration period, that is, the association period is 20 ms. When there are 8 association periods, each of which is 20 ms, the association pattern period contains 8 association periods. The length of the association pattern period is 160 ms.

[0571] The left diagram of FIG. 5B shows the association between the original valid ROs and SSBs. The right diagram of FIG. 5B shows the association between the additional valid ROs and SSBs. Exemplarily, the association period shown in the left diagram of FIG. 5B includes ROs in slots #4, #9, #24 and #29. Considering that 2 PRACH configuration periods are needed to contain ROs in slots #4, #9, #24 and #29, the association period contains 2 PRACH configuration periods. In the association period, ROs are sequentially numbered in the order of frequency domain first and time domain second, and SSBs #0-7 are also associated (mapped) with the original valid ROs in the order of frequency domain first and time domain second. For example, original valid RO #0 is associated with SSB #0, i.e., when original valid RO #0 initiates random access, the random access is initiated to the base station using the beam corresponding to SSB #0. Exemplarily, the association period shown in the right diagram of FIG. 5B includes ROs in slots #2, #3, #7 and #8. Considering that 1 PRACH configuration period is needed to contain ROs in slots #2, #3, #7 and #8, the association period contains 1 PRACH configuration period. As shown in the right diagram of FIG. 5B, the additional valid ROs are also sequentially numbered in the order of frequency domain first and time domain second. SSBs #0-7 are also associated with the additional valid ROs in the order of frequency domain first and time domain second. Exemplarily, additional valid RO #6 is associated with SSB #6. It can be seen from FIG. 5B that all the ROs shown in FIG. 5A are associated with SSBs.

[0572] FIG. 5C shows another configuration of ROs. ROs are allocated in slots #2, #3, #4, #7, #8 and #9. These ROs are sequentially numbered as RO #0-RO #11.

[0573] A specific example is as follows: when the first RO resource set includes original (legacy) ROs and additional (additional) ROs, and the second RO resource set is original (legacy) ROs and additional (additional) ROs, a fourth mapping criterion is used, one SSB is mapped to one RO, and the number of random access preambles (Preamble) contained in the RO associated with one SSB is 16. The mapping relationship (or association relationship) between ROs and SSBs can be as shown in FIG. 5D.

[0574] Option 1: when the second RO resource set is a legacy RO and an additional RO, the SSBs #0~7 are mapped to the legacy valid RO and the additional valid RO in the time slots #2, #3, #4, and #7 of the first PRACH resource. At this time, the association period contains 1 PRACH configuration period, i.e., the association period is 20 ms. The ROs #8, #9, #10, and #11 in the association period are not mapped to the SSBs. There are 8 association periods, each of which is 20 ms. The association pattern period contains 8 association periods. The length of the association pattern period is 160 ms. Based on FIG. 5D, the ROs #8 to #11 configured in FIG. 5C are not associated with the SSBs.

[0575] FIG. 5D shows a configuration diagram of an RO. An association period includes a PRACH configuration period. In the association period shown in FIG. 5D, ROs are configured in the time slots #2, #3, #4, #7, #8, and #9, i.e., including a RACH configuration period. And these ROs are sequentially numbered as ROs #0 to #11. For example, the association period shown in FIG. 5D includes ROs in the time slots #2, #3, #4, #7, #8, and #9. An association period contains 1 PRACH configuration period. In the association period, the ROs are sequentially numbered, and the SSBs #0~11 are also associated (mapped) with the ROs in the mapping manner of first frequency domain and then time domain. For example, the legacy valid RO #0 is associated with the SSB #0, i.e., when the random access is initiated in the legacy valid RO #0, the random access is initiated to the base station using the beam corresponding to the SSB #0. In the embodiment shown in FIG. 5D, the ROs #8 to #11 are not associated with the SSBs. In an embodiment, the base station configures the PRACH resource for the UE. For example, the configuration information of the PRACH resource sent by the base station includes a second configuration. The second configuration can configure 2 sets of PRACH resources, which are respectively a second PRACH resource and a third PRACH resource. The second PRACH resource is used for legacy UEs and SBFD aware UEs. The third PRACH resource is used for SBFD aware UEs. The legacy RO includes the first type RO and the second type RO in the second PRACH resource, and the additional RO includes the first type RO, the second type RO, and the third type RO in the third PRACH resource. The network device is configured with 8 SSBs.

[0576] In the second PRACH resource, the PRACH configuration period is 20 ms, the RO is configured in even frames, there are 0 additional valid ROs and 4 legacy valid ROs in the PRACH configuration period.

[0577] In the third PRACH resource, the PRACH configuration period is 20 ms, the RO is configured in even frames, there are 12 additional valid ROs and 0 legacy valid ROs in the PRACH configuration period. FIG. 5E is a schematic diagram of the configuration of the ROs. It can be seen that the base station configures the UE with the legacy ROs and the additional ROs. The UE determines that the legacy valid ROs available to the UE are numbered as RO#0 to RO#11. The UE determines that the additional valid ROs available to the UE are numbered as RO#0 to RO#3. The numbering of the ROs is obtained in the order of the frequency domain first and then the time domain. In the embodiment of the present disclosure, the legacy valid ROs and the additional valid ROs are numbered respectively.

[0578] A specific example is as follows: the first RO resource set includes legacy ROs and additional ROs, when the second RO resource set is the legacy ROs, the fifth mapping criterion is used, when the second RO resource set is the additional ROs, the sixth mapping criterion is used, the fifth mapping criterion and the sixth mapping criterion are the same, one SSB is mapped to one RO, and the number of random access preambles (Preamble) contained in the RO associated with one SSB is 16. FIG. 5F shows the association relationship between the ROs and the SSBs shown in FIG. 5E.

[0579] Option 1: when the second RO resource set is the legacy ROs, SSB#0-7 are mapped to the legacy valid ROs in time slots #4, #9, #24 and #29, at this time, the association period contains 2 PRACH configuration periods, that is, the association period is 40 ms. When there is only one association period, the association pattern period contains one association period. The length of the association pattern period is 40 ms.

[0580] Option 2: the second RO resource set is additional RO, SSB#0~7 are mapped to additional valid RO in time slot #2, 3, 4, 7 of the first PRACH resource, and the association period contains 1 PRACH configuration period, i.e., the association period is 20 ms. As shown in FIG. 5F, RO#8, #9, #10 and #11 in the association period are not mapped to SSB. There are 8 association periods, each of which is 20 ms, and the association pattern period contains 8 association periods. The length of the association pattern period is 160 ms.

[0581] As shown in the left part of FIG. 5F, one association period can include two RACH configuration periods, and the length of the association period is 40 ms. In the one association period shown in the left part of FIG. 5F, the time slots containing original valid ROs are time slots #4, #9, #24 and #29, and are numbered as RO#0 to RO#7 in sequence. The SSBs associated with RO#0 to RO#7 in sequence are SSB#0 to SSB#7, respectively. As shown in the right part of FIG. 5F, one association period can include one RACH configuration period, and the length of the association period is 20 ms. In the one association period shown in the right part of FIG. 5F, the time slots containing valid ROs are time slots #2, #3, #4, #7, #8 and #9. Among them, the valid ROs associated with SSBs are RO#0 to RO#7 in sequence, and are associated with SSB#0 to SSB#7 in sequence, respectively. RO#9 to RO#11 in time slots #8 and #9 are not associated with SSBs.

[0582] A specific example is as follows: the first RO resource set includes legacy RO and additional RO, the second RO resource set is legacy RO and additional RO, the seventh mapping criterion is used, one SSB is mapped to one RO, and the number of random access preambles contained in the RO associated with one SSB is 16. The configuration of the RO is shown in FIG. 6A.

[0583] Option 1: when the second RO resource set is legacy RO and additional RO, SSB#0~7 are mapped to legacy valid RO and additional valid RO in time slots #2, #3, #4, #7, #8 and #9 of the first PRACH resource, and at this time the association period contains 1 PRACH configuration period, i.e., the association period is 20 ms, and the association pattern period contains 8 association periods. When there are 8 association periods, each of which is 20 ms, the length of the association pattern period is 160 ms. FIG. 6B shows a schematic diagram of the association of the ROs shown in FIG. 6A with the SSBs.

[0584] In one embodiment, the base station configures the UE with PRACH resources. Exemplarily, the configuration information of the PRACH resources sent by the base station includes a third configuration. The third configuration is used to configure two sets of PRACH resources, which are the first PRACH resource and the third PRACH resource, respectively. The first PRACH resource is used for legacy UEs and SBFD aware UEs. The third PRACH resource is used for SBFD aware UEs. The legacy ROs include the first type of ROs and the second type of ROs in the first PRACH resource, the additional ROs #A include the third type of ROs in the first PRACH resource, and the additional ROs #B include the first type of ROs, the second type of ROs and the third type of ROs in the third PRACH resource. The network device is configured with 8 SSBs. In the first PRACH resource, the PRACH configuration period is 20 ms, the ROs are configured in even frames, there are 8 additional valid ROs (additional valid ROs belonging to additional ROs #A) in the PRACH configuration period, and there are 4 legacy valid ROs.

[0585] In the third PRACH resource, the PRACH configuration period is 20 ms, the ROs are configured in even frames, there are 12 additional valid ROs in the PRACH configuration period, and there are no legacy valid ROs.

[0586] One specific example is as follows: the first RO resource set includes a legacy RO and an additional RO, when the second RO resource set is a legacy RO, the eighth mapping criterion is used, when the second RO resource set is an additional RO#A, the ninth mapping criterion is used, when the second RO resource set is an additional RO#B, the tenth mapping criterion is used, and when the second RO resource set is an additional RO#A and an additional RO#B, the eleventh mapping criterion is used. The eighth, ninth, tenth, and eleventh mapping criteria are the same, one SSB is mapped to one RO, and the number of random access preambles (Preamble) contained in the RO associated with one SSB is 16.

[0587] Option 1: when the second RO resource set is a legacy RO, SSB#0-7 is mapped to a legacy valid RO in slots #4, 9, 24, and 29, and at this time, the association period contains two PRACH configuration periods, that is, the association period is 40 ms. When there is only one association period, the association pattern period contains one association period, and the association pattern period is 40 ms.

[0588] Option 2: when the second RO resource set is an additional RO#A, SSB#0-7 is mapped to an additional valid RO in slots #2, 3, 7, and 8, and at this time, the association period contains one PRACH configuration period, that is, the association period is 20 ms. When there are eight association periods, each of which is 20 ms, the association pattern period contains eight association periods, and the association pattern period is 160 ms.

[0589] Option 3: When the second RO resource set is additional RO#B, SSB#0~7 are mapped to additional valid ROs in time slots #2, #3, #4 and #7 of the first PRACH resource. At this time, the association period contains 1 PRACH configuration period, i.e., the association period is 20 ms. The ROs #8, #9, #10 and #11 in the association period are not mapped to SSBs. When there are 8 association periods, each of which is 20 ms, the association pattern period contains 8 association periods. The length of the association pattern period is 160 ms.

[0590] The distribution of the ROs in the above options 1, 2 and 3 in the time domain and the frequency domain can be as shown in FIG. 6C. The left drawing in FIG. 6D shows 4 time slots containing ROs in an association period in option 1, and the association relationship between the ROs and SSBs in the association period is shown. The middle drawing in FIG. 6D shows 4 time slots containing ROs in an association period in option 2, and the association relationship between the ROs and SSBs in the 4 time slots is shown. The right drawing in FIG. 6D shows 6 time slots containing ROs in an association period in option 3, and the time slots #2, #3, #4 and #7 are associated with SSBs, while the ROs in the time slots RO#8, #9, #10 and #11 are not associated with SSBs.

[0591] Option 4: When the second RO resource set is additional RO#A and additional RO#B, SSB#0~7 are mapped to additional valid ROs in time slots #2, #3, #4, #7 and #8 of the first PRACH resource. At this time, the association period contains 1 PRACH configuration period, i.e., the association period is 20 ms. The ROs #16, #17, #18 and #19 in the association period are not mapped to SSBs. When there are 8 association periods, each of which is 20 ms, the association pattern period contains 8 association periods, and the length of the association pattern period is 160 ms. FIG. 6E shows a distribution diagram of the ROs in option 4. FIG. 6F shows an association relationship diagram between the ROs available to the UE and SSBs determined in option 4.

[0592] As shown in FIG. 6E, the PRACH resource can include additional ROs in the first PRACH resource and additional ROs in the third PRACH resource. And the ROs are configured on slots #2, #3, #4, #7, #8 and #9 respectively. As shown in FIG. 6F, one association period can include one PRACH period. The ROs are configured in slots #2, #3, #4, #7, #8 and #9 corresponding to the association period, and are numbered as RO#0 to RO#19 in turn. Among them, RO#0 to RO#15 are associated with SSBs.

[0593] A specific example is as follows: when the first RO resource set includes legacy RO and additional RO, and the second RO resource set is legacy RO and additional RO#A, the twelfth mapping criterion is used; when the second RO resource set is legacy RO and additional RO#B, the thirteenth mapping criterion is used; when the second RO resource set is legacy RO, additional RO#A and additional RO#B, the fourteenth mapping criterion is used. The twelfth, thirteenth and fourteenth mapping criteria are the same, one SSB is mapped to one RO, and the number of random access preambles contained in the RO associated with one SSB is 16. When the second RO resource set is legacy RO, additional RO#A and additional RO#B, the mapping mode can be as shown in FIG. 6G.

[0594] Option 1: when the second RO resource set is legacy RO, additional RO#A and additional RO#B, SSB#0-7 are mapped to the legacy valid RO and additional valid RO in slots #2, #3, #4, #7, #8 and #9 of the first PRACH resource, at this time, the association period (association period) contains one PRACH configuration period, that is, the association period (association period) is 20ms. When there are 8 association periods, each association period is 20ms, and the association pattern period (association pattern period) contains 8 association periods (association period). The length of the association pattern period is 160ms.

[0595] As shown in FIG. 6H, one association period includes 1 PRACH configuration period. There are valid ROs in slots #2, #3, #4, #7, #8, and #9 of the association period.

[0596] In one embodiment, the fourth configuration is included in the PRACH configuration provided by the base station for the UE. The fourth configuration can be used to configure 1 set of RACH resources for both legacy UEs and SBFD aware UEs, referred to as second PRACH resources. The legacy ROs include first type ROs and second type ROs in the second PRACH resources, without additional ROs. In the second PRACH resources, the PRACH configuration period is 20 ms, the ROs are configured in even frames, there are 4 legacy valid ROs in the PRACH configuration period, and there are 8 SSBs. An illustration of the ROs can be as shown in FIG. 7A.

[0597] One specific example is as follows: the first RO resource set includes legacy ROs, when the second RO resource set is legacy ROs, the fifteenth mapping criterion is used, 1 SSB is mapped to 1 RO, and the number of random access preambles included in the RO associated with the SSB is 16.

[0598] When the second RO resource set is legacy ROs, SSBs #0-7 are mapped to legacy valid ROs in slots #4, #9, #24, and #29, at this time, the association period includes 2 PRACH configuration periods, i.e., the association period is 40 ms, and the association pattern period includes 4 association periods. The length of the association pattern period is 160 ms. An illustration of the association relationship between the ROs and the SSBs can be as shown in FIG. 7B. As shown in FIG. 7B, one association period can include 2 PRACH configuration periods. Valid ROs are configured in slots #4, #9, #24, and #29 of the association period. These ROs are numbered as ROs #0-7 in sequence, and ROs #0-7 are associated with SSBs #0-7 in sequence. In some embodiments, the SSBs are associated with the ROs of the second RO resource set in the following order:

[0599] First, the ROs are arranged in ascending order according to frequency division multiplexing (FDM).

[0600] Then, the TDM ROs within one PRACH slot are arranged in ascending order.

[0601] Finally, the ROs of multiple PRACH slots are arranged in ascending order.

[0602] An example is as follows: if the PRACH resource configuration adopts the second configuration. The second configuration can configure two sets of PRACH resources, which are the second PRACH resource and the third PRACH resource. The second PRACH resource is used for legacy UEs and SBFD aware UEs, and the third PRACH resource is used for SBFD aware UEs. The legacy ROs include the first type of ROs and the second type of ROs in the second PRACH resource, and the additional ROs include the first type of ROs, the second type of ROs and the third type of ROs in the third PRACH resource. When the second RO resource set is the legacy RO and the additional RO, the FDM ROs are arranged in ascending order, the first column of ROs in slot #2 is numbered from low to high as #0, #1 according to the frequency domain position, and the first column of ROs in slot #4 is numbered from low to high as #8, #9, #10, #11 according to the frequency domain position.

[0603] The TDM ROs within one PRACH slot are arranged in ascending order, and the second column of ROs in slot #2 is numbered as #2, #3. The ROs of multiple PRACH slots are arranged in ascending order, and the first column of ROs in slot #3 is numbered as #4, #5, and the second column of ROs is numbered as #6, #7. The schematic diagram of the ROs can be as shown in FIG. 7C.

[0604] As shown in FIG. 7D, the embodiment of the present disclosure provides a PRACH resource determination method, which can include:

[0605] Step 1: receiving first information, the first information configuring the time-frequency position of the RO, the time domain position of the SSB, and the mapping relationship (association relationship) between the SSB and the valid RO. The first information includes the RACH resource configuration information of the SBFD aware UE or the RACH resource configuration information of the SBFD aware UE and the legacy UE.

[0606] Step 2: determining the associated SSB in the valid RO and the random access preamble (Preamble) used by each SSB according to the first information. The SBFD aware UE determines the RO and the random access preamble (Preamble) associated with the SSB, determines the association period and the association pattern period.

[0607] The embodiments of the present disclosure further provide a device for implementing any of the above methods, for example, a device is provided, and the device includes units or modules for implementing the steps performed by the first terminal in any of the above methods. For another example, another device is provided, and the device includes units or modules for implementing the steps performed by the network device (for example, an access network device, or a core network device, etc.) in any of the above methods.

[0608] It should be understood that the division of each unit or module in the above device is only a logical function division, and all or part of the units or modules can be integrated into one physical entity, or can be physically separated. In addition, the units or modules in the device can be implemented in the form of processor calling software: for example, the device includes a processor, the processor is connected with a memory, the memory stores instructions, and the processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules of the device, wherein the processor is a general processor, for example, a central processing unit (CPU) or a microprocessor, and the memory is a memory in the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuit, and the functions of part or all of the units or modules can be implemented by designing the hardware circuit, and the hardware circuit can be understood as one or more processors; for example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC), and the functions of part or all of the units or modules are implemented by designing the logical relationship of elements in the circuit; for another example, in another implementation, the hardware circuit is a programmable logic device (PLD), and a field programmable gate array (FPGA) is taken as an example, which can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by a configuration file, so as to implement the functions of part or all of the units or modules. All units or modules of the above device can be implemented in the form of processor calling software, or all units or modules can be implemented in the form of hardware circuit, or part of the units or modules are implemented in the form of processor calling software, and the remaining part is implemented in the form of hardware circuit.

[0609] In the embodiments of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor can be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), a digital signal processor (DSP), and the like. In another implementation, the processor can implement certain functions through a logical relationship of hardware circuit, and the logical relationship of the hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In the reconfigurable hardware circuit, the processor loads a configuration document to implement the configuration of the hardware circuit. It can be understood that the processor loads instructions to implement the functions of the above part or all units or modules. In addition, the hardware circuit can also be designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), and the like.

[0610] As shown in FIG. 8A, the embodiments of the present disclosure provide a user equipment (UE), wherein the UE comprises:

[0611] The receiving module 8101 is configured to receive first information sent by a network device, wherein the first information is used at least for configuring PRACH resources.

[0612] The processing module 8102 is configured to determine, according to the first information, a set of ROs available to the UE, an RO of the set of ROs available to the UE associated with a synchronization signal block (SSB), and a random access preamble associated with the SSB.

[0613] In some embodiments, the UE further comprises a sending module. For example, the sending module and / or the receiving module can correspond to a first network interface and / or a first transceiving antenna.

[0614] In some embodiments, the processing module can be configured to perform the information processing related steps in any of the physical random access channel resource determination methods. In some embodiments, the transmitting module can be configured to perform the information transmitting related steps in any of the physical random access channel resource determination methods. In some embodiments, the receiving module can be configured to perform the information receiving related steps in any of the physical random access channel resource determination methods.

[0615] In some embodiments, the first information comprises at least one of: a first configuration for configuring the first PRACH resource; a second configuration for configuring the second PRACH resource and the third PRACH resource; a third configuration for configuring the first PRACH resource and the third PRACH resource; a fourth configuration for configuring the second PRACH resource; the first PRACH resource comprises at least one of the first type of RO, the second type of RO, and the third type of RO; any type of RO in the first PRACH resource is available to the first type of UE; one or more of the first type of RO and the second type of RO in the first PRACH resource is available to the second type of UE; the second PRACH resource comprises at least one of the first type of RO and the second type of RO; any type of RO in the second PRACH resource is available to the first type of UE; any type of RO in the second PRACH resource is available to the second type of UE; the third PRACH resource comprises at least one of the first type of RO, the second type of RO, and the third type of RO; any type of RO in the third PRACH resource is available to the first type of UE; the third PRACH resource is unavailable to the second type of UE.

[0616] In some embodiments, the time unit in which the first type of RO is located is a non-sub-band duplex (SBFD) time unit; and / or, the time unit in which the second type of RO is located is at least partially an SBFD time unit within a flexible (F) time unit and the time unit in which the second type of RO is located does not include an SBFD time unit within a downlink (DL) time unit; and / or, the time unit in which the third type of RO is located is at least partially an SBFD time unit within a DL time unit.

[0617] In some embodiments, the set of ROs available to the UE comprises at least one of: a first set comprising a full set or a subset of the first ROs; a second set comprising a full set or a subset of the second ROs.

[0618] In some embodiments, the first RO comprises at least one of: the first type of RO in the first PRACH resource;

[0619] the second type of RO in the first PRACH resource; the first type of RO in the second PRACH resource; the second type of RO in the second PRACH resource.

[0620] In some embodiments, the second RO includes at least one of: the third type of RO in the first PRACH resource; the first type of RO in the third PRACH resource; the second type of RO in the third PRACH resource; the third type of RO in the third PRACH resource.

[0621] In some embodiments, the determining, according to the first information, of the set of ROs available to the UE, the RO of the set of ROs available to the UE associated with a synchronization signal block (SSB), and the random access preamble associated with the SSB, includes at least one of: determining the first set according to a first parameter included in the first information and whether the first information includes a second parameter; determining the second set according to the first parameter included in the first information and whether the first information includes the second parameter; determining the second set according to the first parameter included in the first information and whether the first information includes a third parameter; determining the second set according to a fourth parameter included in the first information and whether the first information includes the second parameter; determining the second set according to the fourth parameter included in the first information and whether the first information includes the third parameter.

[0622] In some embodiments, the processing module is configured to, when the first parameter indicates N1 and the first information does not include the second parameter, determine the first set as the full set of the first ROs; or, when the first parameter indicates N1 and the first information includes the second parameter, determine the first set according to a value of the second parameter.

[0623] In some embodiments, the processing module is configured to, when the N1 is greater than 1, determine M1 first ROs of the N1 first ROs associated with the SSB according to a value of the second parameter, and determine the first set according to the M1 first ROs; the M1 is a positive integer less than or equal to the N1; or, when the N1 is less than or equal to 1, determine the first set as the full set of the first ROs.

[0624] In some embodiments, the processing module is configured to, when the first parameter indicates N1 and the first information does not include the second parameter, determine the second set as the full set of the second ROs; or, when the first parameter indicates N1 and the first information includes the second parameter, determine the second set according to a value of the second parameter.

[0625] In some embodiments, the processing module is configured to, when the N1 is greater than 1, determine M2 second ROs associated with the N1 SSBs from the N1 second ROs according to the value of the second parameter, and determine the second set according to the M2 second ROs; the M2 is a positive integer less than or equal to the N1; or, the N1 is less than or equal to 1, and the second set is determined as the full set of the second ROs.

[0626] In some embodiments, the processing module is configured to, when the N1 is greater than 1, determine M2 second ROs associated with the N1 SSBs from the N1 second ROs according to the value of the second parameter, and determine the second set according to the M2 second ROs; the M2 is a positive integer less than or equal to the N1; or, the N1 is less than or equal to 1, and the second set is determined as the full set of the second ROs.

[0627] In some embodiments, the processing module is configured to, when the N1 is greater than 1, determine M2 second ROs associated with the N1 SSBs from the N1 second ROs according to the value of the second parameter, and determine the second set according to the M2 second ROs; the M2 is a positive integer less than or equal to the N1; or, the N1 is less than or equal to 1, and the second set is determined as the full set of the second ROs.

[0628] In some embodiments, the processing module is configured to, when the N1 is greater than 1, determine M2 second ROs associated with the N1 SSBs from the N1 second ROs according to the value of the second parameter, and determine the second set according to the M2 second ROs; the M2 is a positive integer less than or equal to the N1; or, the N1 is less than or equal to 1, and the second set is determined as the full set of the second ROs.

[0629] In some embodiments, the processing module is configured to, when the N1 is greater than 1, determine M2 second ROs associated with the N1 SSBs from the N1 second ROs according to the value of the second parameter, and determine the second set according to the M2 second ROs; the M2 is a positive integer less than or equal to the N1; or, the N1 is less than or equal to 1, and the second set is determined as the full set of the second ROs.

[0630] In some embodiments, the processing module is configured to, when the N1 is greater than 1, determine M2 second ROs associated with the N1 SSBs from the N1 second ROs according to the value of the second parameter, and determine the second set according to the M2 second ROs; the M2 is a positive integer less than or equal to the N1; or, the N1 is less than or equal to 1, and the second set is determined as the full set of the second ROs.

[0631] In some embodiments, the processing module is configured to determine, according to a value of the third parameter, M5 second ROs in the N2 second ROs associated with the SSB, and determine a second set according to the M5 second ROs; the M5 is a positive integer less than or equal to the N2; or, the N2 is less than or equal to 1, and the second set is determined as a full set of the second ROs.

[0632] In some embodiments, the processing module is configured to determine, according to a number of ROs associated with one SSB, an SSB associated with each RO in the set of ROs available to the UE; or, according to a number and index of random access preambles associated with one SSB, a random access preamble associated with each SSB.

[0633] In some embodiments, the first type of UE and the second type of UE share the first set, and the first information is further used to configure the first type of UE and the second type of UE with a same set of random access preambles in the first set; or, the first type of UE and the second type of UE share the first set, and the first information is further used to configure the first type of UE and the second type of UE with different sets of random access preambles in the first set.

[0634] In some embodiments, the first type of UE and the second type of UE share the first set and are configured with the same set of random access preambles, the first type of UE uses the first set to transmit a PRACH signal of random access, the first type of UE cannot use the uplink sub-band of the SBFD time unit within the downlink time unit to transmit the physical uplink shared channel PUSCH information of Msg3 or MsgA of random access; or, the first type of UE and the second type of UE share the first set and are configured with the same set of random access preambles, the first type of UE uses the first set to transmit a PRACH signal of random access, the first type of UE can use the uplink sub-band of the SBFD time unit within the downlink time unit to transmit the physical uplink shared channel PUSCH information of Msg3 or MsgA of random access; or, the first type of UE and the second type of UE share the first set and are configured with different sets of random access preambles, the first type of UE uses the first set to transmit a PRACH signal of random access, the first type of UE can use the uplink sub-band of the SBFD time unit within the downlink time unit to transmit the physical uplink shared channel PUSCH information of Msg3 or MsgA of random access; or, the first type of UE and the second type of UE share the first set and are configured with different sets of random access preambles, the first type of UE uses the first set to transmit a PRACH signal of random access, the first type of UE cannot use the uplink sub-band of the SBFD time unit within the downlink time unit to transmit the physical uplink shared channel PUSCH information of Msg3 or MsgA of random access.

[0635] In some embodiments, the first type of UE uses the second set to transmit a PRACH signal of random access, and the first type of UE can use the uplink sub-band of the SBFD time unit within the downlink time unit to transmit the physical uplink shared channel PUSCH information of the third message Msg3 or MsgA.

[0636] In some embodiments, the processing module is further configured to determine at least one association period according to the criterion that each SSB is mapped to a RO at least once in an association period and the configuration period of the PRACH resource; any one of the association periods is X times the configuration period of the PRACH resource, the X being a positive integer; the values of the X of different ones of the association periods are the same or different; determine an association pattern period according to the at least one association period; and the distribution of the at least one association period of any two of the association pattern periods is the same.

[0637] As shown in FIG. 8B, the embodiments of the present disclosure provide a network device. The network device can include:

[0638] The sending module 8201 is configured to send first information to a user equipment (UE), the first information being used at least for configuring PRACH resources.

[0639] The processing module 8202 is configured to determine, according to the first information, a set of ROs available to the UE, an RO of the set of ROs available to the UE associated with a synchronization signal block (SSB), and a random access preamble associated with the SSB; the set of ROs includes one or more ROs available to the UE.

[0640] In some embodiments, the network device further includes a receiving module and / or a processing module. Exemplarily, the sending module and / or the receiving module can correspond to a network interface and / or a transceiving antenna of the first terminal.

[0641] In some embodiments, the processing module can be used by the network device to perform steps related to information processing in any one of the physical random access channel resource determination methods.

[0642] In some embodiments, the sending module can be used by the network device to perform steps related to information sending in any one of the physical random access channel resource determination methods.

[0643] In some embodiments, the receiving module can be used by the network device to perform steps related to information receiving in any one of the physical random access channel resource determination methods.

[0644] In some embodiments, the first information includes at least one of the following: a first configuration used for configuring first PRACH resources; a second configuration used for configuring second PRACH resources and third PRACH resources; a third configuration used for configuring the first PRACH resources and the third PRACH resources; a fourth configuration used for configuring the second PRACH resources; the first PRACH resources include at least one of first type ROs, second type ROs, and third type ROs; any type of RO in the first PRACH resources can be used by a first type of UE; one or more of the first type ROs and the second type ROs in the first PRACH resources can be used by a second type of UE; the second PRACH resources include at least one of the first type ROs and the second type ROs; any type of RO in the second PRACH resources can be used by the first type of UE; any type of RO in the second PRACH resources can be used by the second type of UE; the third PRACH resources include at least one of the first type ROs, the second type ROs, and the third type ROs; any type of RO in the third PRACH resources can be used by the first type of UE; the third PRACH resources cannot be used by the second type of UE.

[0645] In some embodiments, the time unit in which the first type of ROs are located is a non-subband duplex, SBFD, time unit; and / or, the time unit in which the second type of ROs are located is at least partially an SBFD time unit within a flexible, F, time unit and the time unit in which the second type of ROs are located does not include an SBFD time unit within a downlink, DL, time unit; and / or, the time unit in which the third type of ROs are located is at least partially an SBFD time unit within a DL time unit.

[0646] In some embodiments, the set of ROs available to the UE includes at least one of: a first set including a full set or a subset of the first ROs; a second set including a full set or a subset of the second ROs.

[0647] In some embodiments, the first ROs include at least one of: the first type of ROs in the first PRACH resource; the second type of ROs in the first PRACH resource; the first type of ROs in the second PRACH resource; the second type of ROs in the second PRACH resource.

[0648] In some embodiments, the second ROs include at least one of: the third type of ROs in the first PRACH resource; the first type of ROs in the third PRACH resource; the second type of ROs in the third PRACH resource; the third type of ROs in the third PRACH resource.

[0649] In some embodiments, the processing module is configured to determine the first set according to a first parameter included in the first information and whether the first information includes a second parameter; determine the second set according to a first parameter included in the first information and whether the first information includes a second parameter; determine the second set according to a first parameter included in the first information and whether the first information includes a third parameter; determine the second set according to a fourth parameter included in the first information and whether the first information includes a second parameter; determine the second set according to a fourth parameter included in the first information and whether the first information includes a third parameter.

[0650] In some embodiments, the processing module is configured to, when the first parameter indicates N1 and the first information does not include the second parameter, determine the first set as the full set of the first ROs; or, when the first parameter indicates N1 and the first information includes the second parameter, determine the first set according to a value of the second parameter.

[0651] In some embodiments, the processing module is configured to, when the first parameter indicates N1 and the first information does not contain the second parameter, determine the second set as the full set of the second ROs; or when the first parameter indicates N1 and the first information contains the second parameter, determine the second set according to the value of the second parameter.

[0652] In some embodiments, the processing module is configured to, when the first parameter indicates N1 and the first information does not contain the second parameter, determine the second set as the full set of the second ROs; or when the first parameter indicates N1 and the first information contains the second parameter, determine the second set according to the value of the second parameter.

[0653] In some embodiments, the processing module is configured to, when the first parameter indicates N1 and the first information does not contain the second parameter, determine the second set as the full set of the second ROs; or when the first parameter indicates N1 and the first information contains the second parameter, determine the second set according to the value of the second parameter.

[0654] In some embodiments, the processing module is configured to, when the first parameter indicates N1 and the first information does not contain the second parameter, determine the second set as the full set of the second ROs; or when the first parameter indicates N1 and the first information contains the second parameter, determine the second set according to the value of the second parameter.

[0655] In some embodiments, the processing module is configured to, when the first parameter indicates N1 and the first information does not contain the second parameter, determine the second set as the full set of the second ROs; or when the first parameter indicates N1 and the first information contains the second parameter, determine the second set according to the value of the second parameter.

[0656] In some embodiments, the processing module is configured to, when the first parameter indicates N1 and the first information does not contain the second parameter, determine the second set as the full set of the second ROs; or when the first parameter indicates N1 and the first information contains the second parameter, determine the second set according to the value of the second parameter.

[0657] In some embodiments, the N2 is greater than 1, M4 second ROs of the N2 second ROs associated with the SSB are determined according to a value of the second parameter, and a second set is determined according to the M4 second ROs; the M4 is a positive integer less than or equal to the N2; or the N2 is less than or equal to 1, and the second set is determined as a full set of the second ROs.

[0658] In some embodiments, the processing module is configured to, when the fourth parameter indicates N2 and the first information does not contain a third parameter, determine the second set as a full set of the second ROs; or when the fourth parameter indicates N2 and the first information contains a third parameter, determine the second set according to a value of the third parameter.

[0659] In some embodiments, the processing module is configured to, when the N2 is greater than 1, M5 second ROs of the N2 second ROs associated with the SSB are determined according to a value of the third parameter, and a second set is determined according to the M5 second ROs; the M5 is a positive integer less than or equal to the N2; or the N2 is less than or equal to 1, and the second set is determined as a full set of the second ROs.

[0660] In some embodiments, the processing module is configured to determine the SSB associated with each RO in the set of ROs available to the UE according to a number of ROs associated with one SSB; or determine the random access preamble associated with each SSB according to a number and an index of random access preambles associated with one SSB.

[0661] In some embodiments, the first type of UE and the second type of UE share the first set, and the first information is further used to configure the first type of UE and the second type of UE with a same set of random access preambles in the first set; or

[0662] The first type of UE and the second type of UE share the first set, and the first information is further used to configure the first type of UE and the second type of UE with different sets of random access preambles in the first set.

[0663] In some embodiments, the first type of UE and the second type of UE share the first set and are configured with the same set of random access preambles, the first type of UE uses the first set to transmit PRACH signals for random access, the first type of UE cannot use the uplink UL sub-band of the SBFD time unit within the downlink DL time unit to transmit physical uplink shared channel PUSCH information of Msg3 or MsgA for random access; or, the first type of UE and the second type of UE share the first set and are configured with the same set of random access preambles, the first type of UE uses the first set to transmit PRACH signals for random access, the first type of UE can use the uplink UL sub-band of the SBFD time unit within the downlink DL time unit to transmit physical uplink shared channel PUSCH information of Msg3 or MsgA for random access; or, the first type of UE and the second type of UE share the first set and are configured with different sets of random access preambles, the first type of UE uses the first set to transmit PRACH signals for random access, the first type of UE can use the uplink UL sub-band of the SBFD time unit within the downlink DL time unit to transmit physical uplink shared channel PUSCH information of Msg3 or MsgA for random access; or, the first type of UE and the second type of UE share the first set and are configured with different sets of random access preambles, the first type of UE uses the first set to transmit PRACH signals for random access, the first type of UE cannot use the uplink UL sub-band of the SBFD time unit within the downlink DL time unit to transmit physical uplink shared channel PUSCH information of Msg3 or MsgA for random access.

[0664] In some embodiments, the first type of UE uses the second set to transmit PRACH signals for random access, and the first type of UE can use the uplink UL sub-band of the SBFD time unit within the downlink DL time unit to transmit physical uplink shared channel PUSCH information of the third message Msg3 or MsgA.

[0665] In some embodiments, the processing module is configured to determine at least one association period according to the criterion that each SSB is mapped to a RO at least once in an association period and the configuration period of the PRACH resource; any one of the association periods is X times the configuration period of the PRACH resource, the X being a positive integer; the values of the X of different ones of the association periods are the same or different; determine an association pattern period according to the at least one association period; and any two of the association pattern periods are the same.

[0666] FIG. 9A is a structural schematic diagram of a communication device according to an exemplary embodiment. The communication device 1100 can be a network device (e.g., an access network device or a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor, etc. supporting the network device to implement any of the above methods, or a chip, a chip system, or a processor, etc. supporting the terminal to implement any of the above physical random access channel resource determination methods. The communication device 1100 can be used to implement the physical random access channel resource determination methods described in the above method embodiments, and details can be referred to the descriptions in the above method embodiments.

[0667] As shown in FIG. 9A, the communication device 1100 includes one or more processors 1101. The processor 1101 can be a general purpose processor, a special purpose processor, or the like, 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 (e.g., a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process data of the programs. The processor 1101 is used to invoke instructions to enable the communication device 1100 to perform any of the above communication methods.

[0668] In some embodiments, the communication device 1100 further includes one or more memories 1102 for storing instructions. Optionally, all or part of the memory 1102 can also be outside the communication device 1100.

[0669] In some embodiments, the communication device 1100 further includes one or more transceivers 1103. When the communication device 1100 includes one or more transceivers 1103, the communication steps such as transmission and reception in the above methods are performed by the transceiver 1103, and other steps are performed by the processor 1101.

[0670] In some embodiments, the transceiver can include a receiver and a transmitter, which can be separate or integrated together. Optionally, the terms transceiver, transceiving unit, transceiver, transceiving circuit, etc. can be replaced by each other, the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc. can be replaced by each other, and the terms receiver, receiving unit, receiver, receiving circuit, etc. can be replaced by each other.

[0671] Optionally, the communication device 1100 further includes one or more interface circuits 1104, which are connected with the memory 1102. The interface circuit 1104 can be used to receive signals from the memory 1102 or other devices, and can be used to send signals to the memory 1102 or other devices. For example, the interface circuit 1104 can read the instructions stored in the memory 1102 and send the instructions to the processor 1101.

[0672] The communication device 1100 described in the above embodiments can be a network device or a terminal, but the scope of the communication device 1100 described in the present disclosure is not limited thereto, and the structure of the communication device 1100 can not be limited by FIG. 9A. The communication device can be a standalone device or can be part of a larger device. For example, the communication device can be: (1) a standalone integrated circuit (IC), or a chip, or a chip system or subsystem; (2) a set of one or more ICs, which can optionally also include storage components for storing data, programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, a smart terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, and the like; (6) other devices, and the like.

[0673] FIG. 9B is a structural diagram of a chip according to an example embodiment. For the case where the communication device 1100 can be a chip or a chip system, reference can be made to the structural diagram of a chip 1200 shown in FIG. 9B, but not limited thereto.

[0674] The chip 1200 includes one or more processors 1201 for invoking instructions to cause the chip 1200 to perform any of the above communication methods.

[0675] In some embodiments, the chip 1200 further includes one or more interface circuits 1202 connected with the memory 1203, which can be used to receive signals from the memory 1203 or other devices, and can be used to send signals to the memory 1203 or other devices. For example, the interface circuit 1202 can read instructions stored in the memory 1203 and send the instructions to the processor 1201. Alternatively, the terms interface circuit, interface, transceiver pin, transceiver, and the like can be replaced with each other.

[0676] In some embodiments, the chip 1200 further includes one or more memories 1203 for storing instructions. Alternatively, all or part of the memory 1203 can be outside the chip 1200.

[0677] The present disclosure also provides a storage medium having instructions stored thereon, which, when executed on the communication device 1100, cause the communication device 1100 to perform any of the above methods. Alternatively, the storage medium is an electronic storage medium. Alternatively, the storage medium is a computer-readable storage medium, but can also be a storage medium readable by other devices. Alternatively, the storage medium can be a non-transitory storage medium, but can also be a transitory storage medium.

[0678] The present disclosure also proposes a program product comprising a program and / or instructions, which, when executed by the communication device 1100, causes the communication device 1100 to perform any of the above methods. Optionally, the program product is a computer program product. Optionally, the program product is stored on the storage medium.

[0679] The present disclosure also provides a computer program which, when running on a computer, causes the computer to perform any of the above communication methods.

[0680] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the present disclosure cover any and all variations of the present application which come within the scope of the following claims and their equivalents. It is intended that the specification and examples be considered exemplary only, with the true scope and spirit of the application being indicated by the following claims.

[0681] It is to be understood that the application is not limited to the precise details of design and construction set forth above and illustrated in the accompanying drawings, but that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is indicated by the appended claims, rather than by the foregoing description.

Claims

1. A physical random access channel (PRACH) resource determination method, wherein, The method is performed by a user equipment (UE), and the method comprises: receiving first information transmitted by a network device, the first information being used at least for configuring PRACH resources; determining, according to the first information, a set of ROs available to the UE, an RO of the set of ROs available to the UE associated with a synchronization signal block (SSB), and a random access preamble associated with the SSB; the set of ROs comprising one or more ROs available to the UE.

2. The method of claim 1, wherein, The first information comprises at least one of: a first configuration used for configuring first PRACH resources; a second configuration used for configuring second PRACH resources and third PRACH resources; a third configuration used for configuring first PRACH resources and third PRACH resources; a fourth configuration used for configuring second PRACH resources; The first PRACH resources comprise at least one of first-type ROs, second-type ROs, and third-type ROs; any type of RO in the first PRACH resources is available to first-type UEs; one or more of the first-type ROs and the second-type ROs in the first PRACH resources are available to second-type UEs; The second PRACH resources comprise at least one of the first-type ROs and the second-type ROs; any type of RO in the second PRACH resources is available to first-type UEs; any type of RO in the second PRACH resources is available to second-type UEs; The third PRACH resources comprise at least one of the first-type ROs, the second-type ROs, and the third-type ROs; any type of RO in the third PRACH resources is available to first-type UEs; the third PRACH resources are unavailable to second-type UEs.

3. The method of claim 2, wherein: time units in which the first-type ROs are located are non-sub-band duplex (SBFD) time units; and / or, time units in which the second-type ROs are located are at least partially SBFD time units within flexible (F) time units, and the time units in which the second-type ROs are located do not include SBFD time units within downlink (DL) time units; and / or, time units in which the third-type ROs are located are at least partially SBFD time units within DL time units.

4. The method of claim 3, wherein, The set of ROs available to the UE comprises at least one of: a first set comprising a full set or a subset of first ROs; a second set comprising a full set or a subset of second ROs.

5. The method of claim 4, wherein, The first ROs comprise at least one of: the first-type ROs in the first PRACH resources; the second-type ROs in the first PRACH resources; the first-type ROs in the second PRACH resources; the second-type ROs in the second PRACH resources.

6. The method of claim 4, wherein, The second ROs comprise at least one of: the third-type ROs in the first PRACH resources; the first-type ROs in the third PRACH resources; the second-type ROs in the third PRACH resources; The third type of RO in the third PRACH resource.

7. The method according to any one of claims 4 to 6, wherein, The determining, according to the first information, of the following at least one of the following: a set of ROs available to the UE, an RO of a set of ROs available to the UE associated with a synchronization signal block (SSB), and a random access preamble associated with the SSB comprises: The determining of the first set according to a first parameter included in the first information and whether the first information includes a second parameter comprises: The determining of the second set according to a first parameter included in the first information and whether the first information includes a third parameter comprises: The determining of the second set according to a first parameter included in the first information and whether the first information includes a third parameter comprises: The determining of the second set according to a first parameter included in the first information and whether the first information includes a third parameter comprises: The determining of the second set according to a first parameter included in the first information and whether the first information includes a third parameter comprises:

8. The method of claim 7, wherein, The determining of the first set according to a first parameter included in the first information and whether the first information includes a second parameter comprises one of: The first parameter indicates N1 and the first information does not include the second parameter, and the first set is determined as a full set of the first ROs. The first parameter indicates N1 and the first information includes the second parameter, and the first set is determined according to a value of the second parameter. The first parameter indicates N1 and the first information includes the second parameter, and the determining of the first set according to a value of the second parameter comprises:

9. The method of claim 8, wherein, The N1 is greater than 1, one of N1 second ROs associated with the SSB is determined according to the value of the second parameter, and the second set is determined according to the M2 second ROs; and the M2 is a positive integer less than or equal to the N1. The N1 is less than or equal to 1, and the second set is determined as a full set of the second ROs. The determining of the second set according to a first parameter included in the first information and whether the first information includes a third parameter comprises one of:

10. The method of claim 7, wherein, The first parameter indicates N1 and the first information does not include the second parameter, and the second set is determined as a full set of the second ROs. The first parameter indicates N1 and the first information includes the second parameter, and the second set is determined according to a value of the second parameter. The first parameter indicates N1 and the first information includes the second parameter, and the determining of the second set according to a value of the second parameter comprises one of:

11. The method of claim 10, wherein, The N1 is greater than 1, one of N1 second ROs associated with the SSB is determined according to the value of the second parameter, and the second set is determined according to the M2 second ROs; and the M2 is a positive integer less than or equal to the N1. The N1 is less than or equal to 1, and the second set is determined as a full set of the second ROs. The determining of the second set according to a first parameter included in the first information and whether the first information includes a third parameter comprises at least one of:

12. The method of claim 7, wherein, ​ The first parameter indicates N1, and the first information does not contain the third parameter, determining the second set as the full set of the second RO; The first parameter indicates N1, and the first information contains the third parameter, determining the second set according to the value of the third parameter.

13. The method of claim 12, wherein, The first parameter indicates N1, and the first information contains the third parameter, determining the second set according to the value of the third parameter, including one of the following: The N1 is greater than 1, determining M3 second ROs in N1 second ROs associated with one SSB according to the value of the third parameter, and determining the second set according to the M3 second ROs; the M3 is a positive integer less than or equal to the N1; The N1 is less than or equal to 1, determining the second set as the full set of the second RO.

14. The method of claim 7, wherein, The fourth parameter according to the first information and whether the first information contains a second parameter, determining the second set, including one of the following: The fourth parameter indicates N2, and the first information does not contain the second parameter, determining the second set as the full set of the second RO; The fourth parameter indicates N2, and the first information contains the second parameter, determining the second set according to the value of the second parameter.

15. The method of claim 14, wherein, The fourth parameter indicates N2, and the first information contains the second parameter, determining the second set according to the value of the second parameter, including: The N2 is greater than 1, determining M4 second ROs in N2 second ROs associated with one SSB according to the value of the second parameter, and determining the second set according to the M4 second ROs; the M4 is a positive integer less than or equal to the N2; The N2 is less than or equal to 1, determining the second set as the full set of the second RO.

16. The method of claim 7, wherein, The fourth parameter according to the first information and whether the first information contains a third parameter, determining the second set, including at least one of the following: The fourth parameter indicates N2, and the first information does not contain the third parameter, determining the second set as the full set of the second RO; The fourth parameter indicates N2, and the first information contains the third parameter, determining the second set according to the value of the third parameter.

17. The method of claim 16, wherein, The fourth parameter indicates N2, and the first information contains the third parameter, determining the second set according to the value of the third parameter, including: The N2 is greater than 1, determining M5 second ROs in N2 second ROs associated with one SSB according to the value of the third parameter, and determining the second set according to the M5 second ROs; the M5 is a positive integer less than or equal to the N2; The N2 is less than or equal to 1, determining the second set as the full set of the second RO.

18. The method of any one of claims 1 to 17, wherein, The first information, determining the RO set that the UE can use, the RO of the RO set that the UE can use associated with a synchronization signal broadcast block SSB, and the random access preamble associated with the SSB, including: According to the number of ROs associated with one SSB, determining the SSB associated with each RO in the RO set that the UE can use; The number and indexes of random access preambles associated with each SSB are determined.

19. The method of claim 18, wherein, The first set is shared by the first type of UE and the second type of UE, and the first information is further used for configuring the first type of UE and the second type of UE with the same set of random access preambles in the first set; or, The first set is shared by the first type of UE and the second type of UE, and the first information is further used for configuring the first type of UE and the second type of UE with different sets of random access preambles in the first set.

20. The method of claim 19, wherein, The first set is shared by the first type of UE and the second type of UE and configured with the same set of random access preambles, the first type of UE uses the first set to send a PRACH signal of random access, and the first type of UE cannot use an uplink sub-band of a SBFD time unit within a downlink time unit to send physical uplink shared channel (PUSCH) information of Msg3 or MsgA of random access; or, The first set is shared by the first type of UE and the second type of UE and configured with the same set of random access preambles, the first type of UE uses the first set to send a PRACH signal of random access, and the first type of UE can use an uplink sub-band of a SBFD time unit within a downlink time unit to send physical uplink shared channel (PUSCH) information of Msg3 or MsgA of random access; or, The first set is shared by the first type of UE and the second type of UE and configured with different sets of random access preambles, the first type of UE uses the first set to send a PRACH signal of random access, and the first type of UE can use an uplink sub-band of a SBFD time unit within a downlink time unit to send physical uplink shared channel (PUSCH) information of Msg3 or MsgA of random access; or, The first set is shared by the first type of UE and the second type of UE and configured with different sets of random access preambles, the first type of UE uses the first set to send a PRACH signal of random access, and the first type of UE cannot use an uplink sub-band of a SBFD time unit within a downlink time unit to send physical uplink shared channel (PUSCH) information of Msg3 or MsgA of random access.

21. The method of any one of claims 4 to 20, wherein, The first type of UE uses the second set to send a PRACH signal of random access, and the first type of UE can use an uplink sub-band of a SBFD time unit within a downlink time unit to send physical uplink shared channel (PUSCH) information of a third message (Msg3 or MsgA).

22. The method of any one of claims 1 to 21, wherein, The method further comprises: At least one association period is determined according to the criterion that each SSB is mapped to a RO at least once in an association period and the configuration period of the PRACH resource, and any one of the association periods is X times the configuration period of the PRACH resource, where X is a positive integer; the values of X in different association periods are the same or different; The method further comprises: According to the at least one associated period, an associated pattern period is determined; the distribution of the at least one associated period of any two associated pattern periods is the same.

23. A physical random access channel (PRACH) resource determination method, wherein, The method is performed by a network device, and the method comprises: sending first information to a user equipment (UE), the first information being used at least for configuring PRACH resources; determining, according to the first information, a set of ROs available to the UE, an RO of the set of ROs available to the UE associated with a synchronization signal broadcast block (SSB), and a random access preamble associated with the SSB; the set of ROs comprising one or more ROs available to the UE.

24. The method of claim 23, wherein, The first information comprises at least one of: a first configuration used for configuring first PRACH resources; a second configuration used for configuring second PRACH resources and third PRACH resources; a third configuration used for configuring first PRACH resources and third PRACH resources; a fourth configuration used for configuring second PRACH resources; The first PRACH resources comprise at least one of first-type ROs, second-type ROs, and third-type ROs; any type of RO in the first PRACH resources can be used by first-type UEs; one or more of the first-type ROs and the second-type ROs in the first PRACH resources can be used by second-type UEs; The second PRACH resources comprise at least one of the first-type ROs and the second-type ROs; any type of RO in the second PRACH resources can be used by first-type UEs; any type of RO in the second PRACH resources can be used by second-type UEs; The third PRACH resources comprise at least one of the first-type ROs, the second-type ROs, and the third-type ROs; any type of RO in the third PRACH resources can be used by first-type UEs; the third PRACH resources cannot be used by second-type UEs.

25. The method of claim 24, wherein: time units in which the first-type ROs are located are non-sub-band duplex (SBFD) time units; and / or, time units in which the second-type ROs are located are at least partially SBFD time units within flexible (F) time units, and the time units in which the second-type ROs are located do not include SBFD time units within downlink (DL) time units; and / or, time units in which the third-type ROs are located are at least partially SBFD time units within DL time units. The set of ROs available to the UE comprises at least one of:

26. The method of claim 25, wherein, a first set comprising a full set or a subset of first ROs; a second set comprising a full set or a subset of second ROs. The first ROs comprise at least one of:

27. The method of claim 26, wherein, the first-type ROs in the first PRACH resources; the second-type ROs in the first PRACH resources; the first-type ROs in the second PRACH resources; the second-type ROs in the second PRACH resources. The second ROs comprise at least one of:

28. The method of claim 26, wherein, ​ the third type of RO in the first PRACH resource; the first type of RO in the third PRACH resource; the second type of RO in the third PRACH resource; the third type of RO in the third PRACH resource.

29. The method of any one of claims 26 to 28, wherein, The determining, according to the first information, of the set of ROs available to the UE, the SSB associated with each RO in the set of ROs available to the UE, and the random access preamble associated with the SSB comprises at least one of: The determining of the first set according to a first parameter included in the first information and whether the first information includes a second parameter comprises at least one of: The determining of the second set according to a first parameter included in the first information and whether the first information includes a second parameter comprises at least one of: The determining of the second set according to a first parameter included in the first information and whether the first information includes a third parameter comprises at least one of: The determining of the second set according to a fourth parameter included in the first information and whether the first information includes a second parameter comprises at least one of: The determining of the second set according to a fourth parameter included in the first information and whether the first information includes a third parameter comprises at least one of:

30. The method of claim 29, wherein, The determining of the first set according to a first parameter included in the first information and whether the first information includes a second parameter comprises at least one of: The first parameter indicates N1 and the first information does not include the second parameter, and the first set is determined as the full set of the first ROs. The first parameter indicates N1 and the first information includes the second parameter, and the first set is determined according to a value of the second parameter.

31. The method of claim 30, wherein, The first parameter indicates N1 and the first information includes the second parameter, and the determining of the first set according to a value of the second parameter comprises: The N1 is greater than 1, one SSB is associated with M1 first ROs in N1 second ROs according to a value of the second parameter, and the first set is determined according to the M1 second ROs; the M1 is a positive integer less than or equal to the N1. The N1 is less than or equal to 1, and the first set is determined as the full set of the first ROs.

32. The method of claim 29, wherein, The determining of the second set according to a first parameter included in the first information and whether the first information includes a second parameter comprises at least one of: The first parameter indicates N1 and the first information does not include the second parameter, and the second set is determined as the full set of the second ROs. The first parameter indicates N1 and the first information includes the second parameter, and the second set is determined according to a value of the second parameter.

33. The method of claim 32, wherein, The first parameter indicates N1 and the first information includes the second parameter, and the determining of the second set according to a value of the second parameter comprises: The N1 is greater than 1, one SSB is associated with M2 second ROs in N1 second ROs according to a value of the second parameter, and the second set is determined according to the M2 second ROs; the M2 is a positive integer less than or equal to the N1. The N1 is less than or equal to 1, and the second set is determined as the full set of the second ROs.

34. The method of claim 29, wherein, The determining the second set according to the first parameter contained in the first information and whether the first information contains a third parameter comprises at least one of the following: The first parameter indicates N1 and the first information does not contain the third parameter, and the second set is determined as a full set of the second ROs; The first parameter indicates N1 and the first information contains the third parameter, and the second set is determined according to a value of the third parameter.

35. The method of claim 34, wherein, The first parameter indicates N1 and the first information contains the third parameter, and the second set is determined according to a value of the third parameter, comprising: The N1 is greater than 1, one of the SSBs is associated with M3 second ROs in N1 second ROs according to a value of the third parameter, and a second set is determined according to the M3 second ROs; the M3 is a positive integer less than or equal to the N1; The N1 is less than or equal to 1, and the second set is determined as a full set of the second ROs.

36. The method of claim 29, wherein, The determining the second set according to the fourth parameter of the first information and whether the first information contains a second parameter comprises at least one of the following: The fourth parameter indicates N2 and the first information does not contain the second parameter, and the second set is determined as a full set of the second ROs; The fourth parameter indicates N2 and the first information contains the second parameter, and the second set is determined according to a value of the second parameter.

37. The method of claim 36, wherein, The fourth parameter indicates N2 and the first information contains the second parameter, and the second set is determined according to a value of the second parameter, comprising: The N2 is greater than 1, one of the SSBs is associated with M4 second ROs in N2 second ROs according to a value of the second parameter, and a second set is determined according to the M4 second ROs; the M4 is a positive integer less than or equal to the N2; The N2 is less than or equal to 1, and the second set is determined as a full set of the second ROs.

38. The method of claim 29, wherein, The determining the second set according to the fourth parameter of the first information and whether the first information contains a third parameter comprises at least one of the following: The fourth parameter indicates N2 and the first information does not contain the third parameter, and the second set is determined as a full set of the second ROs; The fourth parameter indicates N2 and the first information contains the third parameter, and the second set is determined according to a value of the third parameter.

39. The method of claim 38, wherein, The fourth parameter indicates N2 and the first information contains the third parameter, and the second set is determined according to a value of the third parameter, comprising: The N2 is greater than 1, one of the SSBs is associated with M5 second ROs in N2 second ROs according to a value of the third parameter, and a second set is determined according to the M5 second ROs; the M5 is a positive integer less than or equal to the N2; The N2 is less than or equal to 1, and the second set is determined as a full set of the second ROs.

40. The method of any one of claims 23 to 39, wherein, The determining the second set according to the first information, the RO set that can be used by the UE, the RO of the RO set that can be used by the UE associated with a synchronization signal broadcast block (SSB), and the random access preamble associated with the SSB comprises: determining, according to a number of SSBs associated with one RO, SSBs associated with each RO in the set of ROs that the UE can use; determining, according to a number and index of random access preambles associated with one SSB, random access preambles associated with each SSB.

41. The method of claim 40, wherein, The first type of UE and the second type of UE share the first set, and the first information is further used for configuring the first type of UE and the second type of UE with a same set of random access preambles in the first set; or, The first type of UE and the second type of UE share the first set, and the first information is further used for configuring the first type of UE and the second type of UE with a different set of random access preambles in the first set.

42. The method of claim 41, wherein, The first type of UE and the second type of UE share the first set and are configured with a same set of random access preambles, the first type of UE uses the first set to send a PRACH signal of random access, and the first type of UE cannot use an uplink sub-band of a SBFD time unit within a downlink time unit to send physical uplink shared channel (PUSCH) information of Msg3 or MsgA of random access; or, The first type of UE and the second type of UE share the first set and are configured with a same set of random access preambles, the first type of UE uses the first set to send a PRACH signal of random access, and the first type of UE can use an uplink sub-band of a SBFD time unit within a downlink time unit to send physical uplink shared channel (PUSCH) information of Msg3 or MsgA of random access; or, The first type of UE and the second type of UE share the first set and are configured with a different set of random access preambles, the first type of UE uses the first set to send a PRACH signal of random access, and the first type of UE can use an uplink sub-band of a SBFD time unit within a downlink time unit to send physical uplink shared channel (PUSCH) information of Msg3 or MsgA of random access; or, The first type of UE and the second type of UE share the first set and are configured with a different set of random access preambles, the first type of UE uses the first set to send a PRACH signal of random access, and the first type of UE cannot use an uplink sub-band of a SBFD time unit within a downlink time unit to send physical uplink shared channel (PUSCH) information of Msg3 or MsgA of random access. The first type of UE uses the second set to send a PRACH signal of random access, and the first type of UE can use an uplink sub-band of a SBFD time unit within a downlink time unit to send physical uplink shared channel (PUSCH) information of a third message (Msg3 or MsgA).

43. The method of any one of claims 23 to 42, wherein, The method further comprises:

44. The method of any one of claims 23 to 43, wherein, determining, according to a criterion that each SSB is mapped to an RO at least once in one association period and a configuration period of the PRACH resource, at least one association period; any one of the association periods is X times the configuration period of the PRACH resource, and the X is a positive integer; the X of different types of the association periods has a same or different value; ​ According to the at least one associated period, a determination is made of an associated pattern period; and any two of the associated pattern periods are identical.

45. A user equipment (UE), wherein, The UE comprises: A receiving module configured to receive first information transmitted by a network device, the first information being used at least for configuring PRACH resources; A processing module configured to determine, according to the first information, a set of ROs available to the UE, an RO of the set of ROs available to the UE associated with a synchronization signal broadcast block (SSB), and a random access preamble associated with the SSB; the set of ROs comprising one or more ROs available to the UE.

46. A network device, wherein, The network device comprises: A sending module configured to send first information to a user equipment (UE), the first information being used at least for configuring PRACH resources; A processing module configured to determine, according to the first information, a set of ROs available to the UE, an RO of the set of ROs available to the UE associated with a synchronization signal broadcast block (SSB), and a random access preamble associated with the SSB; the set of ROs comprising one or more ROs available to the UE.

47. A communication system, wherein, The communication system comprises a first terminal and a first node; the first node is configured to implement the physical random access channel resource determination method according to any one of claims 1 to 22, and the first terminal is configured to implement the physical random access channel resource determination method according to any one of claims 23 to 44.

48. A communications device, comprising: The communication device comprises: One or more processors; The processor is used to call instructions to enable the communication device to implement the physical random access channel resource determination method according to any one of claims 1 to 22 or claims 23 to 44.

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