Information transmission method and device, related equipment, storage medium and computer program product

Abstract

The invention discloses an information transmission method and device, a terminal, network equipment, a storage medium and a computer program product. The method comprises: a terminal receiving first information sent by a network side, the first information being used for indicating a first condition, the first condition being used for determining a first random access transmission opportunity (RO), the first condition being associated with a sensing resource; and / or, the terminal receives second information sent by the network side, the second information being used for indicating a second condition, the second condition being used for determining whether to use the first set to expand a second set, the second condition being associated with a sensing resource, and the expanded second set being used for determining the RO that can be used by the terminal; the first set comprises a second RO, and the second RO cannot be used for physical random access channel (PRACH) transmission.

Description

Technical Field

[0001] This application relates to the field of wireless communication, and more particularly to an information transmission method, apparatus, related equipment, storage medium, and computer program product. Background Technology

[0002] For integrated sensing technology, such as Figure 1 As shown, in a cooperative sensing scenario where A transmits and B receives (A and B can include base stations), sensing resources reside in the uplink symbols of the sensing receiving base station, which may conflict with the uplink resources of the sensing receiving base station. In other words, the sensing echo signal may conflict with the transmission resources of the Physical Random Access Channel (PRACH) of the sensing receiving base station. This may affect the random access process of terminals attempting to access the sensing receiving base station. Summary of the Invention

[0003] To address the related technical problems, embodiments of this application provide an information transmission method, apparatus, related equipment, storage medium, and computer program product.

[0004] The technical solution of this application embodiment is implemented as follows:

[0005] This application provides an information transmission method applied to a terminal, including:

[0006] The system receives first information sent by the network side, the first information being used to indicate a first condition, the first condition being used to determine a first random access transmission opportunity (RO, RACH Occasion), and the first condition being associated with sensed resources.

[0007] And / or,

[0008] The system receives second information sent from the network side. The second information is used to indicate a second condition. The second condition is used to determine whether to use the first set to expand the second set. The second condition is associated with sensing resources. The expanded second set is used to determine the ROs that the terminal can use. The first set includes the second RO. The second RO cannot be used for PRACH transmission.

[0009] In the above scheme, the first RO includes a third RO and a fourth RO. The third RO cannot be used for PRACH transmission, while the fourth RO can be used for PRACH transmission.

[0010] In the above scheme, the second set includes the fifth RO, which can be used for PRACH transmission; the sixth RO includes the second RO and the fifth RO, and the sixth RO is determined using a third condition, which is not associated with sensing resources.

[0011] In the above scheme, the first information includes the time domain and / or frequency domain position of the sensing symbol, N1, and N2. N1 represents the number of symbols between the first RO and the last downlink symbol or the last synchronization signal block (SSB, Synchronization Signal / PBCH Block) symbol, and N2 represents the number of symbols between the first RO and the last sensing symbol. Both N1 and N2 are greater than or equal to 0, and the magnitudes of N1 and N2 are related to the subcarrier spacing of the preamble.

[0012] or,

[0013] The first information includes N3, where N3 represents the offset of N4, and N4 represents the number of symbols between the first RO and the last downlink symbol or the last SSB symbol. Both N3 and N4 are greater than or equal to 0, and the magnitude of N3 is associated with the time domain and / or frequency domain position of the sensed symbol.

[0014] In the above scheme, N3 is equal to the larger of the first value and the second value. The first value represents the number of symbols between the sensing symbol and the last downlink symbol, and the second value represents the number of symbols between the sensing symbol and the last SSB symbol.

[0015] In the above scheme, if the third information sent by the network side is not received, and the first information includes the time-domain and / or frequency-domain position of the sensing symbol, N1, and N2, the first condition includes: the first RO does not precede the SSB in the corresponding PRACH time slot, and is at least N1 symbols after the last downlink symbol, and at least N1 symbols after the last SSB symbol, and at least N2 symbols after the sensing symbol; wherein,

[0016] The third piece of information is used to configure the frame structure.

[0017] In the above scheme, if the third information sent by the network side is not received, and the first information contains N3, the first condition includes: the first RO is not prior to the SSB in the corresponding PRACH time slot, and is at least N5 symbols after the last downlink symbol, and at least N5 symbols after the last SSB symbol; wherein,

[0018] The third piece of information is used to configure the frame structure, where N5 equals N3 plus N4.

[0019] In the above scheme, when the third information sent by the network side is received, and the first information includes the time domain and / or frequency domain location of the sensing symbol, N1, and N2, the first condition includes one of the following:

[0020] The first RO is within the uplink symbol and is at least N2 symbols after the sensing symbol;

[0021] The first RO does not precede the SSB in the corresponding PRACH slot, and is at least N1 symbols after the last downlink symbol, at least N1 symbols after the last SSB symbol, and at least N2 symbols after the sense symbol; wherein,

[0022] The third piece of information is used to configure the frame structure.

[0023] In the above scheme, the second information includes the time-domain and / or frequency-domain location of the sensing symbol; the second condition includes M1 being less than or equal to M2, and both M1 and M2 being greater than or equal to 0, where M1 represents the number of ROs occupied by the sensing symbol among all ROs included in the second set, and M2 represents the number of ROs not occupied by the sensing symbol among all ROs included in the first set; the method further includes:

[0024] If the second condition is met, the second set is expanded using the first set;

[0025] or,

[0026] If the second condition is not met, the second set shall not be expanded.

[0027] In the above scheme, expanding the second set using the first set includes:

[0028] Following the order of frequency domain first, then time domain, sort all the ROs in the first set that are not occupied by the sensing symbols to obtain the first sequence;

[0029] The first M1 ROs in the first sequence are added to the second set to obtain the expanded second set.

[0030] The method in the above scheme further includes:

[0031] Using the expanded second set, a third set is determined, which contains all ROs in the expanded second set that are not occupied by the perceptual symbols;

[0032] PRACH transmission is performed using the RO in the third set.

[0033] The method in the above scheme further includes:

[0034] The network receives a fourth message sent by the network side, the fourth message indicating the mapping type between the SSB and the RO, the mapping type including periodic mapping or continuous mapping;

[0035] When performing PRACH transmission, the mapping between SSB and RO in the third set is performed using the mapping type between SSB and RO indicated by the fourth information.

[0036] In the above scheme, when the mapping type between SSB and RO indicated by the fourth information is a continuous mapping, the step of using the mapping type between SSB and RO indicated by the fourth information to perform the mapping between SSB and RO in the third set includes:

[0037] For each SSB index, after performing K consecutive mappings, the next SSB index is mapped. K is an integer greater than 0, and K represents the number of mapping cycles between SSB and RO within an SSB association cycle.

[0038] This application also provides an information transmission method applied to a network device, including:

[0039] Send first information to the terminal, the first information is used to indicate a first condition, the first condition is used to determine a first RO, and the first condition is associated with a sensing resource;

[0040] And / or,

[0041] A second message is sent to the terminal, the second message being used to indicate a second condition, the second condition being used to determine whether to use the first set to expand the second set, the second condition being associated with sensing resources, the expanded second set being used to determine the ROs that the terminal can use; the first set includes the second RO, the second RO cannot be used for PRACH transmission.

[0042] In the above scheme, the first RO includes a third RO and a fourth RO. The third RO cannot be used for PRACH transmission, while the fourth RO can be used for PRACH transmission.

[0043] In the above scheme, the second set includes the fifth RO, which can be used for PRACH transmission; the sixth RO includes the second RO and the fifth RO, and the sixth RO is determined using a third condition, which is not associated with sensing resources.

[0044] In the above scheme, the first information includes the time domain and / or frequency domain position of the sensing symbol, N1, and N2. N1 represents the number of symbols between the first RO and the last downlink symbol or the last SSB symbol, and N2 represents the number of symbols between the first RO and the last sensing symbol. Both N1 and N2 are greater than or equal to 0, and the magnitudes of N1 and N2 are related to the subcarrier spacing of the preamble.

[0045] or,

[0046] The first information includes N3, where N3 represents the offset of N4, and N4 represents the number of symbols between the first RO and the last downlink symbol or the last SSB symbol. Both N3 and N4 are greater than or equal to 0, and the magnitude of N3 is associated with the time domain and / or frequency domain position of the sensed symbol.

[0047] In the above scheme, N3 is equal to the larger of the first value and the second value. The first value represents the number of symbols between the sensing symbol and the last downlink symbol, and the second value represents the number of symbols between the sensing symbol and the last SSB symbol.

[0048] In the above scheme, if no third information is sent to the terminal, and the first information includes the time-domain and / or frequency-domain position of the sensing symbol, N1, and N2, the first condition includes: the first RO does not precede the SSB in the corresponding PRACH time slot, and is at least N1 symbols after the last downlink symbol, and at least N1 symbols after the last SSB symbol, and at least N2 symbols after the sensing symbol; wherein,

[0049] The third piece of information is used to configure the frame structure.

[0050] In the above scheme, if no third information is sent to the terminal and the first information contains N3, the first condition includes: the first RO is not prior to the SSB in the corresponding PRACH time slot, and is at least N5 symbols after the last downlink symbol, and at least N5 symbols after the last SSB symbol; wherein,

[0051] The third piece of information is used to configure the frame structure, where N5 equals N3 plus N4.

[0052] In the above scheme, when the third information is sent to the terminal, and the first information includes the time-domain and / or frequency-domain location of the sensing symbol, N1, and N2, the first condition includes one of the following:

[0053] The first RO is within the uplink symbol and is at least N2 symbols after the sensing symbol;

[0054] The first RO does not precede the SSB in the corresponding PRACH slot, and is at least N1 symbols after the last downlink symbol, at least N1 symbols after the last SSB symbol, and at least N2 symbols after the sense symbol; wherein,

[0055] The third piece of information is used to configure the frame structure.

[0056] In the above scheme, the second information includes the time domain and / or frequency domain location of the sensing symbol; the second condition includes M1 being less than or equal to M2, and both M1 and M2 being greater than or equal to 0, where M1 represents the number of ROs occupied by the sensing symbol among all ROs included in the second set, and M2 represents the number of ROs not occupied by the sensing symbol among all ROs included in the first set.

[0057] In the above scheme, when sending the second information to the terminal, the method further includes:

[0058] A fourth message is sent to the terminal, the fourth message indicating the mapping type between SSB and RO, the mapping type including periodic mapping or continuous mapping.

[0059] This application also provides an information transmission device, including:

[0060] The first receiving unit is used for:

[0061] The first information sent by the network side is received. The first information is used to indicate a first condition. The first condition is used to determine a first RO. The first condition is associated with the sensing resource.

[0062] And / or,

[0063] The system receives second information sent by the network side. The second information is used to indicate a second condition. The second condition is used to determine whether to use the first set to expand the second set. The second condition is associated with sensing resources. The expanded second set is used to determine the ROs that the terminal can use. The first set includes the second RO. The second RO cannot be used for PRACH transmission.

[0064] This application also provides an information transmission device, including:

[0065] The first transmitting unit is used for:

[0066] Send first information to the terminal. The first information is used to indicate a first condition. The first condition is used to determine a first RO. The first condition is associated with a sensing resource.

[0067] And / or,

[0068] A second message is sent to the terminal, the second message being used to indicate a second condition, the second condition being used to determine whether to use the first set to expand the second set, the second condition being associated with sensing resources, the expanded second set being used to determine the ROs that the terminal can use; the first set includes the second RO, the second RO cannot be used for PRACH transmission.

[0069] This application embodiment also provides a terminal, including: a first communication interface and a first processor; wherein,

[0070] The first communication interface is used for:

[0071] The first information sent by the network side is received. The first information is used to indicate a first condition. The first condition is used to determine a first RO. The first condition is associated with the sensing resource.

[0072] And / or,

[0073] The system receives second information sent from the network side. The second information is used to indicate a second condition. The second condition is used to determine whether to use the first set to expand the second set. The second condition is associated with sensing resources. The expanded second set is used to determine the ROs that the terminal can use. The first set includes the second RO. The second RO cannot be used for PRACH transmission.

[0074] This application also provides a network device, including: a second communication interface and a second processor; wherein,

[0075] The second communication interface is used for:

[0076] Send first information to the terminal. The first information is used to indicate a first condition. The first condition is used to determine a first RO. The first condition is associated with a sensing resource.

[0077] And / or,

[0078] A second message is sent to the terminal, the second message being used to indicate a second condition, the second condition being used to determine whether to use the first set to expand the second set, the second condition being associated with sensing resources, the expanded second set being used to determine the ROs that the terminal can use; the first set includes the second RO, the second RO cannot be used for PRACH transmission.

[0079] This application also provides a terminal, including: a first processor and a first memory for storing a computer program capable of running on the processor.

[0080] Wherein, when the first processor is used to run the computer program, it executes the steps of any of the above-described terminal-side methods.

[0081] This application also provides a network device, including: a second processor and a second memory for storing computer programs capable of running on the processor.

[0082] Wherein, when the second processor runs the computer program, it executes the steps of any of the methods described above on the network device side.

[0083] This application also provides a storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of any of the methods described above on the terminal side, or implements the steps of any of the methods described above on the network device side.

[0084] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of any of the methods described above on the terminal side, or implements the steps of any of the methods described above on the network device side.

[0085] The information transmission method, apparatus, related devices, storage medium, and computer program products provided in this application embodiment include a terminal receiving first information sent by a network side, the first information indicating a first condition, the first condition determining a first Resource Entity (RO), and the first condition being associated with a sensing resource; and / or receiving second information sent by the network side, the second information indicating a second condition, the second condition determining whether to use a first set to expand a second set, the second condition being associated with a sensing resource, and the expanded second set determining ROs that the terminal can use; the first set includes a second RO, and the second RO cannot be used for PRACH transmission. The solution provided in this application embodiment indicates to the terminal a condition associated with the sensing resource for determining the RO (i.e., the first RO) (i.e., the first condition), and / or indicates to the terminal a condition associated with the sensing resource for determining whether to use the set of unavailable ROs (i.e., the second RO) (i.e., the first set) to expand the set of ROs that the terminal can use (i.e., the second set) (i.e., the second condition). In this way, the terminal can subsequently determine the truly effective ROs that are not occupied by the sensing signal according to the condition associated with the sensing resource indicated by the network side, thereby reducing the impact of sensing signal transmission on the random access process, that is, avoiding invalid random access attempts caused by the terminal occupying ROs by the sensing signal, thereby reducing random access latency and reducing the terminal's power consumption. Attached Figure Description

[0086] Figure 1 This is a schematic diagram of a sensing scene in related technologies;

[0087] Figure 2 This is a schematic diagram illustrating the correspondence between SSB and RO in related technologies;

[0088] Figure 3 This is a schematic diagram of a new effective RO (i.e., the first RO) according to an embodiment of this application;

[0089] Figure 4 This is another new and effective RO schematic diagram according to an embodiment of this application;

[0090] Figure 5This is a schematic diagram of a usable RO extension scenario (i.e., a scenario that extends the second set) according to an embodiment of this application;

[0091] Figure 6 This is a schematic diagram of another usable RO extension scenario according to an embodiment of this application;

[0092] Figure 7 This is a schematic diagram of a third usable RO expansion scenario according to an embodiment of this application;

[0093] Figure 8 This is a schematic diagram of a periodic mapping in an embodiment of this application;

[0094] Figure 9 This is a schematic diagram illustrating the continuity mapping of embodiments of this application;

[0095] Figure 10 This is a flowchart illustrating the information transmission method according to an embodiment of this application;

[0096] Figure 11 This is a schematic diagram of an information transmission device according to an embodiment of this application;

[0097] Figure 12 This is a schematic diagram of another information transmission device structure according to an embodiment of this application;

[0098] Figure 13 This is a schematic diagram of the terminal structure according to an embodiment of this application;

[0099] Figure 14 This is a schematic diagram of the network device structure according to an embodiment of this application;

[0100] Figure 15 This is a schematic diagram of the information transmission system structure according to an embodiment of this application. Detailed Implementation

[0101] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0102] In related technologies, a PRACH transmission opportunity (also known as an Occasion) is a resource used by a terminal to initiate random access and has a specific mapping relationship with the SSB. The terminal can determine the number of ROs within an association period based on the PRACH configuration information, and determine the time and / or frequency domain locations of these ROs. However, not all ROs can be used to transmit PRACH (i.e., not all ROs can be used for PRACH transmission). The validity of an RO depends on one or more of the association period, frame structure configuration, and SSB transmission location.

[0103] The mapping between SSB and RO can start from system frame 0 and repeat according to an association period. As shown in Table 1, the association period can be N times the PRACH configuration period. The set of values ​​for N can be related to the PRACH configuration period. The specific value of N can be the minimum value in the set that ensures that all actually transmitted SSBs and ROs complete at least one round of mapping, thereby minimizing the random access delay.

[0104]

[0105]

[0106] Table 1

[0107] Related technologies define unusable Returning Roots (ROs) in New Radio (NR) systems. Specifically, if, within an association period, after an integer number of SSB-RO mapping periods, there are still remaining ROs that cannot completely map all SSBs, then these remaining ROs cannot be used for PRACH transmission.

[0108] Related technologies also define valid ROs in NR systems. A valid RO can refer to an RO that occurs within an associated period, is located within an uplink symbol, or meets specific timing conditions. Specifically, in a Time Division Duplex (TDD) system, the base station can configure ROs for the terminal using the PRACH configuration index. However, not all of these ROs are necessarily valid; the terminal needs to further determine the validity of the RO based on the frame structure. If the terminal has not received frame structure configuration information (tdd-UL-DL-ConfigurationCommon), then an RO in a PRACH slot is valid if it meets the following conditions: it does not precede the SSB in that PRACH slot and is at least in the N of the last downlink symbol. gap After a symbol, and at least in the last SSB symbol N gap After one symbol. If the terminal receives frame structure configuration information, the RO in the PRACH slot is valid if it satisfies either of the following conditions (i.e., condition 1 or condition 2): Condition 1, within the uplink symbol; Condition 2, not preceding the SSB in the PRACH slot, and at least within the N of the last downlink symbol. gap After a symbol, at least at the Nth symbol of the last SSB. gap After a symbol. Here, N gap The value of is related to the subcarrier spacing (SCS) of the preamble, as shown in Table 2. Furthermore, the effective RO determined by the terminal without receiving frame structure configuration information may be the same as the effective RO determined with receiving frame structure configuration information.

[0109] The subcarrier spacing of the preamble (which can be expressed as Preamble SCS) <![CDATA[N gap ]]> 1.25 kHz or 5 kHz 0 15kHz or 30kHz or 60kHz or 120kHz 2 480kHz 8 960kHz 16

[0110] Table 2

[0111] Furthermore, based on the above conditions for determining valid ROs, taking frequency band 1 (FR1, Frequency Range 1) (i.e., the frequency range below 6 GHz, i.e., the Sub-6 GHz band) and PRACH configuration index 77 as an example (i.e., taking the random access configuration shown in Table 3 as an example), assuming the SSB subcarrier spacing is 15 kHz, the PRACH subcarrier spacing is 30 kHz, the actual number of transmitted SSBs is 4, distributed in the first half of system frame 0, the ROs are distributed in subframe 9 of system frame 1, there are a total of 12 time-domain ROs, and the number of frequency division multiplexed ROs is 1. Assuming one SSB maps to two ROs, the correspondence between SSBs and ROs is as follows: Figure 2 As shown, after one round of mapping, there are still 4 ROs remaining that are invalid ROs and cannot be used to transmit PRACH.

[0112]

[0113] Table 3: Random Access Configuration of FR1 without Paired Spectrum (which can be expressed as Random in English)

[0114] access configurations for FR1 and unpaired spectrum)

[0115] In practical applications, when sensing signals occupy a significant amount of uplink resources at the sensing receiving base station (also known as a sensing receiving node), it can severely impact the transmission efficiency of uplink communication services. Therefore, on conflicting resources, the sensing receiving base station can treat uplink communication signals as interference and only detect the sensing signal, thereby improving sensing performance; alternatively, the sensing receiving base station can also relinquish some sensing signals and detect communication signals, thus simultaneously ensuring the performance of both sensing and communication. When sensing signals occupy a relatively small amount of uplink resources at the sensing receiving base station, signaling instructions can be used to prevent terminals from transmitting data on conflicting resources.

[0116] However, based on the conditions for determining a valid RO in the NR system described above, a valid RO can be located within an uplink symbol. Therefore, for Figure 1 In the scenario shown, when a sensing signal occupies a RO (Redirecting Optical Array) on base station B (i.e., the sensing receiving base station), an idle terminal preparing to access base station B, unaware of the sensing signal's presence, will still consider the occupied RO a valid RO and transmit a preamble normally on that RO. However, base station B may only receive the sensing signal on that symbol, so the terminal may not receive a random access response. This random access failure forces the terminal to wait for the next association cycle to initiate random access again, increasing random access latency. When multiple terminals select the same SSB beam, it can lead to a large number of terminals failing to access simultaneously, severely impacting network quality.

[0117] Furthermore, in NR systems, terminal access failures are usually due to low transmit power or contention failure. Therefore, when the terminal retransmits the preamble (i.e., when initiating random access again), it may perform a power ramp-up. For access failures caused by sensing, the terminal's power ramp-up will incur additional energy consumption.

[0118] Based on this, in various embodiments of this application, the network side indicates to the terminal the conditions associated with the sensed resources for determining the RO, and / or indicates to the terminal the conditions associated with the sensed resources for determining whether to use the unavailable RO set to expand the RO set that the terminal can use. In this way, the terminal can subsequently determine the truly valid RO that is not occupied by the sensed signal according to the conditions associated with the sensed resources indicated by the network side, thereby reducing the impact of sensed signal transmission on the random access process, that is, avoiding invalid random access attempts caused by the terminal occupying ROs by sensed signals, thereby reducing random access latency and reducing the terminal's power consumption.

[0119] It should be noted that in the various embodiments of this application, "one or more" means at least one or more items, and "multiple" means at least two or more items.

[0120] Specifically, embodiments of this application provide an information transmission method applied to a terminal, including:

[0121] The first information sent by the network side is received. The first information is used to indicate a first condition. The first condition is used to determine a first RO. The first condition is associated with the sensing resource.

[0122] And / or,

[0123] The system receives second information sent from the network side. The second information is used to indicate a second condition. The second condition is used to determine whether to use the first set to expand the second set. The second condition is associated with sensing resources. The expanded second set is used to determine the ROs that the terminal can use. The first set includes the second RO. The second RO cannot be used for PRACH transmission.

[0124] The first RO may include a third RO and a fourth RO, wherein the third RO cannot be used for PRACH transmission, and the fourth RO can be used for PRACH transmission.

[0125] Additionally, the second set may include a fifth RO, which can be used for PRACH transmission; the sixth RO may include the second RO and the fifth RO, which is determined using a third condition that is not associated with sensing resources.

[0126] In practical applications, the terminal can also be referred to as User Equipment (UE) or simply as a user. Furthermore, the terminal can specifically receive first and / or second information sent by network devices on the network side. These network devices may include base stations, and the base stations may include sensing base stations, such as… Figure 1 Base station B (i.e., sensing and receiving base station) in the scenario shown.

[0127] In practical applications, the first RO can be understood as a truly effective RO that is not occupied by a sensing signal; or, the first RO can be understood as a new effective RO that is different from the original effective RO (i.e., the sixth RO) determined by the conditions for determining an effective RO that are defined using relevant technologies and are not associated with sensing resources (i.e., the third condition, which is also the existing condition for determining an effective RO in the above-mentioned NR system). In other words, the first RO and the sixth RO can also be called effective ROs; the sixth RO is determined using the existing conditions for determining an effective RO in the NR system (i.e., the third condition), and can also be called the original effective RO; the first RO is determined using the new effective RO determination conditions (i.e., the first condition) proposed in the embodiments of this application, and can also be called the new effective RO.

[0128] Additionally, the third RO and the second RO can also be referred to as unusable ROs; the third RO can be referred to as a new unusable RO, specifically referring to the remaining ROs after an integer number of SSB-RO mapping cycles in the first RO of an associated period, and these remaining ROs cannot be used for PRACH transmission; the second RO can be referred to as the original unusable RO, specifically referring to the remaining ROs after an integer number of SSB-RO mapping cycles in the sixth RO of an associated period, and these remaining ROs cannot be used for PRACH transmission, and the first set can also be referred to as the set of original unusable ROs.

[0129] Additionally, the fourth and fifth ROs can also be referred to as available ROs, or understood as ROs that the terminal can use; the fourth RO can be referred to as a new available RO, specifically referring to the ROs other than the third RO in the first RO of an association period, which can be used for PRACH transmission; the fifth RO can be referred to as an original available RO, specifically referring to the ROs other than the second RO in the sixth RO of an association period, which can be used for PRACH transmission, and the second set can also be referred to as the set of original available ROs or the set of ROs that the terminal can use. Here, the ROs that the terminal can use can also be understood as ROs that can successfully initiate random access.

[0130] In one embodiment, the first information may include the time-domain and / or frequency-domain position of the sensing symbol, N1, and N2, where N1 represents the number of symbols between the first RO and the last downlink symbol or the last SSB symbol, and N2 represents the number of symbols between the first RO and the last sensing symbol. Both N1 and N2 are greater than or equal to 0, and the magnitudes of N1 and N2 are associated with the subcarrier spacing of the preamble.

[0131] In practical applications, the specific relationship between the values ​​of N1 and N2 and the subcarrier spacing of the preamble can be set according to needs (such as sensing requirements), and this embodiment does not limit this. For example, when the subcarrier spacing of the preamble is 1.25kHz or 5kHz, the values ​​of N1 and N2 can both be 0; when the subcarrier spacing of the preamble is 15kHz, 30kHz, 60kHz, or 120kHz, the value of N1 can be 2, and the value of N2 can be 1.

[0132] In practical applications, considering that the terminal can only receive System Information Block 1 (SIB1) before initiating random access, the network device can indicate the time-domain and / or frequency-domain position of the sensing signal to the terminal through SIB1, and can independently configure N1 and N2; that is, the network device can send SIB1 to the terminal, which may contain one or more of the time-domain and / or frequency-domain position of the sensing symbol, N1, and N2. Furthermore, the specific method by which the network device configures the time-domain and / or frequency-domain position of the sensing symbol to the terminal can be set according to needs (such as sensing requirements), and this application embodiment does not limit this. For example, the time-domain position of the sensing signal can be fixed, and the network device only dynamically configures the frequency-domain position, for example, sending the sensing signal only in time slot 7 of each subframe, but the specific physical resource blocks (PRBs) occupied can be dynamically configured; or, the frequency-domain position of the sensing signal can be fixed, and the network device only dynamically configures the time-domain position.

[0133] In practical applications, after receiving the first information containing the time-domain and / or frequency-domain positions of the sensing symbols, N1, and N2, the terminal can determine the symbol interval condition that the first RO needs to satisfy, i.e., determine the first condition. At this time, if the third information for configuring the frame structure (i.e., the aforementioned frame structure configuration information) sent by the network side is not received, the first condition may include: the first RO is not prior to the SSB in the corresponding PRACH slot, and is at least N1 symbols after the last downlink symbol, and at least N1 symbols after the last SSB symbol, and at least N2 symbols after the sensing symbols; for example, N1 is denoted as N... gap N2 is denoted as N g ′ ap The valid RO (i.e., the first RO) determined by the terminal can be as follows: Figure 3 As shown. Upon receiving the third information, the first condition may include one of the following:

[0134] The first RO is within the uplink symbol and is at least N2 symbols after the sensing symbol;

[0135] The first RO does not precede the SSB in the corresponding PRACH time slot, and is at least N1 symbols after the last downlink symbol, at least N1 symbols after the last SSB symbol, and at least N2 symbols after the sense symbol.

[0136] In one embodiment, the first information can be implemented in another way, that is, the first information may not include the time domain and / or frequency domain position, N1, and N2, but only N3. N3 can represent the offset of N4, and N4 represents the number of symbols between the first RO and the last downlink symbol or the last SSB symbol. Both N3 and N4 are greater than or equal to 0, and the magnitude of N3 is associated with the time domain and / or frequency domain position of the sensed symbol. Here, N4 can be a parameter defined in related technologies, or it can be a parameter known by the terminal using a specific calculation method. This application embodiment does not limit the specific determination / indication method of N4, as long as its function is implemented. In addition, in practical applications, the specific association method between the magnitude of N3 and the time domain and / or frequency domain position of the sensed symbol can be set according to needs (such as sensing requirements, etc.), and this application embodiment does not limit this either. For example, N3 can be equal to the larger value between a first value and a second value, where the first value represents the number of symbols between the sensed symbol and the last downlink symbol, and the second value represents the number of symbols between the sensed symbol and the last SSB symbol.

[0137] In practical applications, after receiving the first information containing N3, the terminal can determine the symbol interval condition that the first RO needs to satisfy, i.e., determine the first condition. At this time, if the third information for configuring the frame structure (i.e., the aforementioned frame structure configuration information) sent by the network side is not received, the first condition may include: the first RO is not preceding the SSB in the corresponding PRACH slot, and is at least N5 symbols after the last downlink symbol, and at least N5 symbols after the last SSB symbol; where N5 equals N3 plus N4. For example, N3 is denoted as ΔN. gap N4 is denoted as N gap That is, N5 can be represented as N gap +ΔN gap The valid RO (i.e., the first RO) determined by the terminal can be as follows: Figure 4 As shown.

[0138] In practical applications, after determining the first condition, the terminal can use the first condition to determine the first RO and can send PRACH on the first RO. Specifically, the terminal can first determine the remaining RO after an integer number of SSB-RO mapping cycles in the first RO of an association period, i.e., determine the third RO; then, the terminal can determine the RO other than the third RO in the first RO of an association period (i.e., the fourth RO) and can use the fourth RO for PRACH transmission; here, the fourth RO can be understood as a truly valid RO that is not occupied by sensing symbols and can successfully initiate random access. In this way, based on the first information, the valid RO determination rule (i.e., the determination condition, i.e., the third condition) in the related technology can be enhanced in a minimally improved manner, i.e., it can indicate a new valid RO determination condition (i.e., the first condition) associated with sensing resources, thereby avoiding the terminal from initiating random access on ROs occupied by sensing signals when the network device needs to detect sensing signals, reducing random access latency, and reducing the terminal's power consumption.

[0139] In practical applications, the second information may implicitly indicate that the valid RO determination condition (i.e., the third condition) in the related technology is not improved, or it may be understood as an indication that the original valid RO definition is not changed. In other words, when the network device sends the second information to the terminal, the terminal can first determine the sixth RO, the second RO, and the fifth RO based on the third condition, obtain the first set and the second set, and then use the second condition to determine whether to use the first set to expand the second set. That is, the second condition can be used to determine whether to add the unusable ROs (i.e., the second ROs) in the first set that are not occupied by perceived symbols to the second set, thereby expanding the ROs that the terminal can use.

[0140] Based on this, in one embodiment, the second information may include the time-domain and / or frequency-domain location of the sensing symbol; the second condition may include M1 less than or equal to M2, where both M1 and M2 are greater than or equal to 0, M1 represents the number of ROs occupied by the sensing symbol among all ROs included in the second set, and M2 represents the number of ROs not occupied by the sensing symbol among all ROs included in the first set; correspondingly, the method may further include:

[0141] If the second condition is met, the second set is expanded using the first set;

[0142] or,

[0143] If the second condition is not met, the second set shall not be expanded.

[0144] In practical applications, when the terminal expands the second set using the first set, it can select M1 second ROs from the first set to add to the second set. Specifically, the network device can also send the second information to the terminal through SIB1, that is, the network device can indicate the time domain and / or frequency domain location of the sensing signal to the terminal through SIB1. After receiving the second information, the terminal can first determine all ROs according to the PRACH configuration information, and then use the valid RO determination rules (i.e., determination conditions, also known as the third condition) in related technologies to determine the set of valid ROs Ψ0 (i.e., the set of the sixth ROs) within the corresponding association period. The size of set Ψ0 can be N0, that is, set Ψ0 can contain N0 of the sixth ROs. After that, the terminal can determine the set of available ROs Ψ1 (i.e., the second set). The size of set Ψ1 can be N1, that is, set Ψ1 can contain N1 of the fifth ROs; and assuming that 1 SSB is associated with k ROs, and there are m SSBs actually transmitted, then the number of unavailable ROs (i.e., the second ROs) can be N0 - N1 = N0 mod (m * k). Subsequently, if the terminal determines that all ROs occupied by the sensing symbol are available ROs (i.e., the fifth RO), and the number of ROs occupied by the sensing symbol n ≤ N0 - N1 (at this time, M1 equals n, and M2 equals N0 - N1; that is, since the sensing symbol does not occupy any unavailable ROs (i.e., the second RO), M2 equals the number of unavailable ROs (i.e., the second RO), then the terminal can add n unavailable ROs (i.e., the second RO) to the set of available ROs (i.e., the second set). If the terminal determines that the sensing symbol occupies n1 available ROs (i.e., the fifth RO) and n2 unavailable ROs (i.e., the second RO), and n1 ≤ N0 - N1 - n2 (at this time, M1 equals n1, and M2 equals N0 - N1 - n2), then the terminal can add n1 unavailable ROs (i.e., the second RO) that were not occupied by the sensing symbol to the set of available ROs (i.e., the second set).

[0145] In practical applications, if the second condition is not met, the second set is not expanded, which can avoid affecting the SSB-RO mapping in the next association cycle.

[0146] In practical applications, during the process of expanding the second set using the first set, the terminal can select unavailable ROs (i.e., the second ROs) from the first set to be added to the second set in the order of frequency domain first and time domain second.

[0147] Based on this, in one embodiment, expanding the second set using the first set may include:

[0148] Following the order of frequency domain first, then time domain, sort all the ROs in the first set that are not occupied by the sensing symbols to obtain the first sequence;

[0149] The first M1 ROs (i.e., the M1 second ROs) in the first sequence are added to the second set to obtain the expanded second set.

[0150] Here, it can be understood that the M1 second ROs added to the original second set become new available ROs; in other words, the terminal can use these M1 ROs for PRACH transmission, that is, the terminal can use these M1 ROs to access the network device. For example, assuming that 6 SSBs are actually transmitted, each SSB maps to 4 ROs, and there are 32 valid ROs (i.e., the sixth RO) within the association period, where ROs 0-23 are sequentially associated with the 6 SSBs, then the remaining ROs 24-31 are unavailable ROs (i.e., the second ROs). Figure 5 As shown, when sensing occupies ROs 2-5, the ROs corresponding to SSB0 and SSB1 are affected, reducing the random access success rate of UEs (i.e., the terminals) that select SSB0 and SSB1. Since the remaining number of ROs (i.e., ROs 24-31) is sufficient to compensate for the ROs occupied by sensing, a frequency domain-first, time domain-second approach can be used to select 4 ROs from ROs 24-31 (where M1 equals 4) as new available ROs. In this way, a complete mapping from all SSBs to ROs can still be achieved, ensuring the fairness of random access. Figure 6 As shown, when ROs 2, 3, 26, and 27 are occupied by the sensed RO, the RO corresponding to SSB 0 is affected, reducing the random access success rate of the UE (i.e., the terminal) that selects SSB 0. Since the remaining number of ROs not occupied by the sensed RO (i.e., ROs 24-25 and ROs 28-31) is sufficient to compensate for the ROs occupied by the sensed RO, a frequency domain-first, time domain-second approach can be adopted to skip the unusable ROs occupied by the sensed RO (i.e., ROs 26 and 27) and select two ROs (where M1 equals 2) as new available ROs. In this way, the complete mapping of all SSBs to ROs can still be achieved, ensuring the fairness of random access. Figure 7 As shown, when perception occupies RO 0 to 11, UEs (i.e., the terminals) that select SSB0, 1 and 2 will all fail to access randomly. However, even if all the remaining ROs (i.e. RO 24 to 31) are used (i.e. all are extended to the second set), they cannot meet the RO mapping requirements of all SSBs. Therefore, UEs that fail to access can wait for the next association period to initiate random access again in accordance with the relevant protocol.

[0151] In practical applications, after obtaining the extended second set, the terminal can delete the ROs occupied by the sensing symbols from the extended second set, that is, delete the M1 fifth ROs occupied by the sensing symbols, and obtain a truly effective set of ROs (referred to as the third set in the following description), and can use the ROs in the third set for PRACH transmission.

[0152] Based on this, in one embodiment, the method may further include:

[0153] Using the expanded second set, a third set is determined, which contains all ROs in the expanded second set that are not occupied by the perceptual symbols;

[0154] PRACH transmission is performed using the RO in the third set.

[0155] Here, it can be understood that the extended second set may include all the fifth ROs contained in the original second set and the added M1 second ROs. Among all the fifth ROs, there are still M1 fifth ROs occupied by the sensing symbols. Therefore, the terminal can use the extended second set to determine the third set, that is, to determine the set of ROs that are not occupied by the sensing symbols and that the terminal can use. In other words, it can determine the set of truly valid ROs that are not occupied by the sensing symbols and that can successfully initiate random access. Thus, the terminal can successfully access the network device using the ROs in the third set.

[0156] In one embodiment, the method may further include:

[0157] The network receives a fourth message sent by the network side, the fourth message being used to indicate the mapping type between the SSB and the RO, the mapping type including periodic mapping or continuous mapping;

[0158] When performing PRACH transmission, the mapping between SSB and RO in the third set is performed using the mapping type between SSB and RO indicated by the fourth information.

[0159] In practical applications, a periodic mapping method is adopted. That is, when SSB and RO can be mapped for multiple periods, the SSB index is mapped for one round before mapping the next round of SSB index, which can ensure the fairness of random access.

[0160] In one embodiment, when the mapping type between the SSB and RO indicated by the fourth information is a continuous mapping, the step of mapping the SSB to the RO in the third set using the mapping type indicated by the fourth information may include:

[0161] For each SSB index, after performing K consecutive mappings, the next SSB index is mapped. K is an integer greater than 0, and K represents the number of mapping cycles between SSB and RO within an SSB association cycle.

[0162] In practical applications, using a continuous mapping method enables the terminal to complete random access within a single association cycle, reducing PRACH transmission latency and improving the success rate of random access. Furthermore, the network device can implement the fourth piece of information through higher-layer parameters, indicating the mapping type between the SSB and RO, such as parameters in the random access configuration (RACH-ConfigCommon).

[0163] In practical applications, assuming 4 SSBs are actually transmitted, each SSB maps to 2 ROs, the number of ROs in frequency division multiplexing is 2, and assuming that the available ROs within the associated period (i.e., the ROs in the third set) can achieve 3 complete SSB-RO mapping periods. When using a periodic mapping method, i.e., mapping one SSB-RO period before mapping the next period, such as... Figure 8 As shown, although the RO of the second SSB0 has a duration increased by 5 ROs compared to the RO of the first SSB0, the fairness of random access can be guaranteed. When using a continuous mapping method, i.e., mapping the next SSB index after K consecutive mappings (i.e., after mapping all ROs of one SSB index), as... Figure 9 As shown, the RO of the second SSB0 only increases by 2 ROs compared to the RO of the first SSB0. The terminal can wait for the sensing signal transmission to finish before immediately performing PRACH transmission, thereby reducing PRACH transmission latency and improving the success rate of random access.

[0164] In practical applications, as can be seen from the above description, based on the second information, the determination criteria for available ROs can be optimized, that is, the available ROs can be expanded, which means expanding the ROs that the terminal can use. Specifically, the terminal can first determine the unavailable ROs (i.e., the second ROs) based on the mapping between SSB and RO, and then determine the available ROs (i.e., the fifth ROs) and unavailable ROs (i.e., the second ROs) occupied by the sensing signal according to the time domain and / or frequency domain position (i.e., resource configuration information, i.e., the second information). Based on the relationship between the number of remaining unavailable ROs (i.e., the number of second ROs not occupied by the sensing M2) and the number of available ROs occupied by the sensing (i.e., the number of fifth ROs occupied by the sensing M1), it can determine whether to use the unavailable ROs (i.e., the second ROs) for PRACH transmission, and can determine which unavailable ROs (i.e., the first M1 second ROs in the first sequence) will be used for PRACH transmission.

[0165] Accordingly, embodiments of this application also provide an information transmission method, applied to network devices (such as sensing and receiving base stations), including:

[0166] Send first information to the terminal. The first information is used to indicate a first condition. The first condition is used to determine a first RO. The first condition is associated with a sensing resource.

[0167] And / or,

[0168] A second message is sent to the terminal, the second message being used to indicate a second condition, the second condition being used to determine whether to use the first set to expand the second set, the second condition being associated with sensing resources, the expanded second set being used to determine the ROs that the terminal can use; the first set includes the second RO, the second RO cannot be used for PRACH transmission.

[0169] In one embodiment, when sending the second information to the terminal, the method may further include:

[0170] A fourth message is sent to the terminal, the fourth message indicating the mapping type between SSB and RO, the mapping type including periodic mapping or continuous mapping.

[0171] Accordingly, embodiments of this application also provide an information transmission method, such as... Figure 10 As shown, the method includes:

[0172] Step 1001: The network side sends the first information and / or the second information to the terminal;

[0173] Step 1002: The terminal receives the first information and / or the second information sent by the network side;

[0174] Wherein, the first information is used to indicate a first condition, which is used to determine a first RO, and the first condition is associated with a sensing resource. The second information is used to indicate a second condition, which is used to determine whether to use a first set to expand a second set, and the second condition is associated with a sensing resource. The expanded second set is used to determine the ROs that the terminal can use; the first set includes a second RO, and the second RO cannot be used for PRACH transmission.

[0175] The information transmission method provided in this application embodiment includes a terminal receiving first information sent by a network side, the first information indicating a first condition, the first condition determining a first Resource Entity (RO), and the first condition being associated with a sensing resource; and / or receiving second information sent by the network side, the second information indicating a second condition, the second condition determining whether to use a first set to expand a second set, the second condition being associated with a sensing resource, and the expanded second set determining ROs that the terminal can use; the first set includes a second RO, and the second RO cannot be used for PRACH transmission. The solution provided in this application embodiment indicates to the terminal a condition associated with the sensing resource for determining the RO (i.e., the first RO) (i.e., the first condition), and / or indicates to the terminal a condition associated with the sensing resource for determining whether to use the set of unavailable ROs (i.e., the second RO) (i.e., the first set) to expand the set of ROs that the terminal can use (i.e., the second set) (i.e., the second condition). In this way, the terminal can subsequently determine the truly effective ROs that are not occupied by the sensing signal according to the condition associated with the sensing resource indicated by the network side, thereby reducing the impact of sensing signal transmission on the random access process, that is, avoiding invalid random access attempts caused by the terminal occupying ROs by the sensing signal, thereby reducing random access latency and reducing the terminal's power consumption.

[0176] Based on the first information, the effective RO determination rule (i.e., the determination condition, also known as the third condition) in the related technology can be enhanced with minimal improvement. That is, it can indicate a new effective RO determination condition (i.e., the first condition) associated with the sensing resource. This can prevent the terminal from initiating random access on the RO occupied by the sensing signal when the network device needs to detect the sensing signal, reduce random access latency, and reduce the power consumption of the terminal.

[0177] Based on the second information, the determination criteria for available ROs can be optimized, that is, the available ROs can be expanded, which means expanding the ROs that the terminal can use. Specifically, the terminal can first determine the unavailable ROs (i.e., the second ROs) based on the mapping between SSB and RO, and then determine the available ROs (i.e., the fifth ROs) and unavailable ROs (i.e., the second ROs) occupied by the sensing signal according to the time domain and / or frequency domain position (i.e., resource configuration information, i.e., the second information). Based on the relationship between the number of remaining unavailable ROs (i.e., the number of second ROs not occupied by the sensing M2) and the number of available ROs occupied by the sensing (i.e., the number of fifth ROs occupied by the sensing M1), it can determine whether to use the unavailable ROs (i.e., the second ROs) for PRACH transmission, and can determine which unavailable ROs (i.e., the first M1 second ROs in the first sequence) will be used for PRACH transmission.

[0178] Furthermore, the solution provided in this application, based on the fourth information, can achieve periodic or continuous mapping between SSB and RO. When using periodic mapping, the fairness of random access can be guaranteed. When using continuous mapping, the terminal can complete random access within one associated period as much as possible, reducing PRACH transmission latency and improving the success rate of random access.

[0179] To implement the terminal-side method of this application embodiment, this application embodiment also provides an information transmission device, which is installed on the terminal, such as... Figure 11 As shown, the device includes:

[0180] The first receiving unit 1101 is used for:

[0181] The first information sent by the network side is received. The first information is used to indicate a first condition. The first condition is used to determine a first RO. The first condition is associated with the sensing resource.

[0182] And / or,

[0183] The system receives second information sent from the network side. The second information is used to indicate a second condition. The second condition is used to determine whether to use the first set to expand the second set. The second condition is associated with sensing resources. The expanded second set is used to determine the ROs that the terminal can use. The first set includes the second RO. The second RO cannot be used for PRACH transmission.

[0184] In one embodiment, the second information includes the time-domain and / or frequency-domain location of the sensing symbol; the second condition includes M1 being less than or equal to M2, both M1 and M2 being greater than or equal to 0, M1 representing the number of ROs occupied by the sensing symbol among all ROs included in the second set, and M2 representing the number of ROs not occupied by the sensing symbol among all ROs included in the first set; accordingly, as Figure 11 As shown, the device may further include:

[0185] Extension unit 1102, used for:

[0186] If the second condition is met, the second set is expanded using the first set;

[0187] or,

[0188] If the second condition is not met, the second set shall not be expanded.

[0189] In one embodiment, the expansion unit 1102 is specifically used for:

[0190] Following the order of frequency domain first, then time domain, sort all the ROs in the first set that are not occupied by the sensing symbols to obtain the first sequence;

[0191] The first M1 ROs in the first sequence are added to the second set to obtain the expanded second set.

[0192] In one embodiment, the expansion unit 1102 is further configured to determine a third set using the expanded second set, the third set containing all ROs in the expanded second set that are not occupied by the perceptual symbol;

[0193] Accordingly, such as Figure 11 As shown, the device may also include a transmission unit 1103 for performing PRACH transmission using the RO in the third set.

[0194] In one embodiment, such as Figure 11 As shown, the device may further include a second receiving unit 1104 for receiving fourth information sent by the network side, the fourth information being used to indicate the mapping type between SSB and RO, the mapping type including periodic mapping or continuous mapping;

[0195] Accordingly, the transmission unit 1103 is also used to map the SSB to the RO in the third set by using the mapping type between the SSB and RO indicated by the fourth information when performing PRACH transmission.

[0196] In one embodiment, when the mapping type between SSB and RO indicated by the fourth information is a continuous mapping, the transmission unit 1103 is further configured to perform mapping of the next SSB index after performing K consecutive mappings for each SSB index, where K is an integer greater than 0 and K represents the number of mapping cycles between SSB and RO within an SSB association cycle.

[0197] In practical applications, the first receiving unit 1101 and the second receiving unit 1104 can be implemented by the communication interface in the information transmission device; the expansion unit 1102 can be implemented by the processor in the information transmission device; and the transmission unit 1103 can be implemented by the processor in the information transmission device in combination with the communication interface.

[0198] To implement the network device-side method of this application embodiment, this application embodiment also provides an information transmission device, disposed on the network device, such as... Figure 12 As shown, the device includes:

[0199] The first transmitting unit 1201 is used for:

[0200] Send first information to the terminal. The first information is used to indicate a first condition. The first condition is used to determine a first RO. The first condition is associated with a sensing resource.

[0201] And / or,

[0202] A second message is sent to the terminal, the second message being used to indicate a second condition, the second condition being used to determine whether to use the first set to expand the second set, the second condition being associated with sensing resources, the expanded second set being used to determine the ROs that the terminal can use; the first set includes the second RO, the second RO cannot be used for PRACH transmission.

[0203] In one embodiment, when sending the second information to the terminal, such as... Figure 12 As shown, the device may further include:

[0204] The second sending unit 1202 is used to send fourth information to the terminal, the fourth information being used to indicate the mapping type between SSB and RO, the mapping type including periodic mapping or continuous mapping.

[0205] In practical applications, the first sending unit 1201 and the second sending unit 1202 can be implemented by the communication interface in the information transmission device.

[0206] It should be noted that the information transmission device provided in the above embodiments is only illustrated by the division of the above program modules. In actual applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the device can be divided into different program modules to complete all or part of the processing described above. In addition, the information transmission device and the information transmission method embodiments provided in the above embodiments belong to the same concept, and their specific implementation process can be found in the method embodiments, which will not be repeated here.

[0207] Based on the hardware implementation of the above program modules, and in order to implement the terminal-side method of the embodiments of this application, the embodiments of this application also provide a terminal, such as... Figure 13 As shown, the terminal 1300 includes:

[0208] The first communication interface 1301 is capable of exchanging information with the network side and / or other terminals;

[0209] The first processor 1302 is connected to the first communication interface 1301 to enable information interaction with the network side and / or other terminals, and to execute the methods provided by one or more technical solutions on the terminal side when running a computer program;

[0210] The computer program is stored in the first memory 1303.

[0211] Specifically, the first communication interface 1301 is used for:

[0212] The first information sent by the network side is received. The first information is used to indicate a first condition. The first condition is used to determine a first RO. The first condition is associated with the sensing resource.

[0213] And / or,

[0214] The system receives second information sent by the network side. The second information is used to indicate a second condition. The second condition is used to determine whether to use the first set to expand the second set. The second condition is associated with sensing resources. The expanded second set is used to determine the ROs that the terminal 1300 can use. The first set includes the second RO. The second RO cannot be used for PRACH transmission.

[0215] In one embodiment, the second information includes the time-domain and / or frequency-domain location of the sensing symbol; the second condition includes M1 being less than or equal to M2, both M1 and M2 being greater than or equal to 0, M1 representing the number of ROs occupied by the sensing symbol among all ROs included in the second set, and M2 representing the number of ROs not occupied by the sensing symbol among all ROs included in the first set; correspondingly, the first processor 1302 is configured to:

[0216] If the second condition is met, the second set is expanded using the first set;

[0217] or,

[0218] If the second condition is not met, the second set shall not be expanded.

[0219] In one embodiment, the first processor 1302 is further configured to:

[0220] Following the order of frequency domain first, then time domain, sort all the ROs in the first set that are not occupied by the sensing symbols to obtain the first sequence;

[0221] The first M1 ROs in the first sequence are added to the second set to obtain the expanded second set.

[0222] In one embodiment, the first processor 1302 is further configured to:

[0223] Using the expanded second set, a third set is determined, which contains all ROs in the expanded second set that are not occupied by the perceptual symbols;

[0224] Using the RO in the third set, PRACH transmission is performed through the first communication interface 1301.

[0225] In one embodiment, the first communication interface 1301 is further configured to receive fourth information sent by the network side, the fourth information being used to indicate the mapping type between SSB and RO, the mapping type including periodic mapping or continuous mapping;

[0226] Accordingly, the first processor 1302 is also configured to, when performing PRACH transmission through the first communication interface 1301, use the mapping type between SSB and RO indicated by the fourth information to perform mapping between SSB and RO in the third set.

[0227] In one embodiment, when the mapping type between SSB and RO indicated by the fourth information is a continuous mapping, the first processor 1302 is further configured to perform mapping of the next SSB index after performing K consecutive mappings for each SSB index, where K is an integer greater than 0 and K represents the number of mapping cycles between SSB and RO within an SSB association cycle.

[0228] It should be noted that the specific processing procedures of the first communication interface 1301 and the first processor 1302 can be understood by referring to the above method, and will not be repeated here.

[0229] Of course, in practical applications, the various components in terminal 1300 are coupled together through bus system 1304. It can be understood that bus system 1304 is used to implement communication between these components. In addition to a data bus, bus system 1304 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in... Figure 13 The general designated all buses as Bus System 1304.

[0230] The first memory 1303 in this embodiment is used to store various types of data to support the operation of the terminal 1300. Examples of such data include any computer program used to operate on the terminal 1300.

[0231] The methods disclosed in the above embodiments of this application can be applied to the first processor 1302, or implemented by the first processor 1302. The first processor 1302 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware or by instructions in the form of software in the first processor 1302. The first processor 1302 may be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The first processor 1302 can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in the embodiments of this application can be directly reflected as being executed by a hardware decoding processor, or being executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium, which is located in the first memory 1303. The first processor 1302 reads the information in the first memory 1303 and completes the steps of the aforementioned method in combination with its hardware.

[0232] In an exemplary embodiment, terminal 1300 may be implemented by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers (MCUs), microprocessors, or other electronic components to perform the aforementioned method.

[0233] Based on the hardware implementation of the above program modules, and in order to implement the method on the network device side of the embodiments of this application, the embodiments of this application also provide a network device, such as... Figure 14 As shown, the network device 1400 includes:

[0234] The second communication interface 1401 is capable of exchanging information with terminals and / or other network devices;

[0235] The second processor 1402 is connected to the second communication interface 1401 to enable information interaction with the terminal and / or other network devices, and to execute the methods provided by one or more technical solutions on the network device side when running computer programs;

[0236] The computer program is stored in the second memory 1403.

[0237] Specifically, the second communication interface 1401 is used for:

[0238] Send first information to the terminal. The first information is used to indicate a first condition. The first condition is used to determine a first RO. The first condition is associated with a sensing resource.

[0239] And / or,

[0240] A second message is sent to the terminal, the second message being used to indicate a second condition, the second condition being used to determine whether to use the first set to expand the second set, the second condition being associated with sensing resources, the expanded second set being used to determine the ROs that the terminal can use; the first set includes the second RO, the second RO cannot be used for PRACH transmission.

[0241] In one embodiment, when sending the second information to the terminal, the second communication interface 1401 is also used to send fourth information to the terminal, the fourth information being used to indicate the mapping type between SSB and RO, the mapping type including periodic mapping or continuous mapping.

[0242] It should be noted that the specific processing procedure of the second communication interface 1401 can be understood by referring to the above method, and will not be repeated here.

[0243] Of course, in practical applications, the various components in network device 1400 are coupled together through bus system 1404. It can be understood that bus system 1404 is used to implement communication between these components. In addition to a data bus, bus system 1404 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in... Figure 14 The general designated all buses as Bus System 1404.

[0244] The second memory 1403 in this embodiment is used to store various types of data to support the operation of the network device 1400. Examples of such data include any computer program used to operate on the network device 1400.

[0245] The methods disclosed in the above embodiments of this application can be applied to, or implemented by, the second processor 1402. The second processor 1402 may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method can be completed by the integrated logic circuitry of the hardware or by instructions in the form of software within the second processor 1402. The second processor 1402 may be a general-purpose processor, a DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The second processor 1402 can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in the embodiments of this application can be directly manifested as execution by a hardware decoding processor, or execution by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium, specifically a second memory 1403. The second processor 1402 reads information from the second memory 1403 and, in conjunction with its hardware, completes the steps of the aforementioned method.

[0246] In an exemplary embodiment, the network device 1400 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, microprocessors, or other electronic components to perform the aforementioned method.

[0247] It is understood that the memories (first memory 1303, second memory 1403) in the embodiments of this application can be volatile memory or non-volatile memory, or both. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), magnetic random access memory (FRAM), flash memory, magnetic surface memory, optical disc, or compact disc read-only memory (CD-ROM); magnetic surface memory can be disk storage or magnetic tape storage. Volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), SyncLink Dynamic Random Access Memory (SLDRAM), and Direct Rambus Random Access Memory (DRRAM).The memories described in the embodiments of this application are intended to include, but are not limited to, these and any other suitable types of memories.

[0248] To implement the method provided in the embodiments of this application, the embodiments of this application also provide an information transmission system, such as... Figure 15 As shown, the system includes: terminal 1501 and network device 1502.

[0249] It should be noted that the specific processing procedures of the terminal 1501 and network device 1502 have been described in detail above and will not be repeated here.

[0250] In an exemplary embodiment, this application also provides a storage medium, namely a computer storage medium, specifically a computer-readable storage medium, such as a first memory 1303 storing a computer program, which can be executed by a first processor 1302 of a terminal 1300 to complete the steps described in any of the methods on the terminal side. Another example is a second memory 1403 storing a computer program, which can be executed by a second processor 1402 of a network device 1400 to complete the steps described in any of the methods on the network device side. The computer-readable storage medium can be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM.

[0251] In an exemplary embodiment, this application also provides a computer program product, including a computer program that can be executed by a first processor 1302 of a terminal 1300 to complete the steps of any of the aforementioned terminal-side methods; or, the computer program can be executed by a second processor 1402 of a network device 1400 to complete the steps of any of the aforementioned network device-side methods.

[0252] It should be noted that terms such as "first" and "second" are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0253] Furthermore, the technical solutions described in the embodiments of this application can be combined arbitrarily without conflict.

[0254] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of protection of this application.

Claims

1. An information transmission method, characterized in that, Applied to terminals, including: The first information sent by the network side is received. The first information is used to indicate a first condition. The first condition is used to determine a first random access transmission opportunity (RO). The first condition is associated with a sensed resource. And / or, The system receives second information sent by the network side. The second information is used to indicate a second condition. The second condition is used to determine whether to use the first set to expand the second set. The second condition is associated with sensing resources. The expanded second set is used to determine the ROs that the terminal can use. The first set includes the second RO. The second RO cannot be used for Physical Random Access Channel (PRACH) transmission.

2. The method according to claim 1, characterized in that, The first RO includes a third RO and a fourth RO. The third RO cannot be used for PRACH transmission, while the fourth RO can be used for PRACH transmission.

3. The method according to claim 1, characterized in that, The second set includes a fifth RO, which can be used for PRACH transmission; the sixth RO includes the second RO and the fifth RO, which is determined using a third condition that is not associated with sensing resources.

4. The method according to claim 1, characterized in that, The first information includes the time-domain and / or frequency-domain position of the sensing symbol, N1, and N2. N1 represents the number of symbols between the first RO and the last downlink symbol or the last synchronization signal block SSB symbol, and N2 represents the number of symbols between the first RO and the last sensing symbol. Both N1 and N2 are greater than or equal to 0, and the magnitudes of N1 and N2 are related to the subcarrier spacing of the preamble. or, The first information includes N3, where N3 represents the offset of N4, and N4 represents the number of symbols between the first RO and the last downlink symbol or the last SSB symbol. Both N3 and N4 are greater than or equal to 0, and the magnitude of N3 is associated with the time domain and / or frequency domain position of the sensed symbol.

5. The method according to claim 4, characterized in that, N3 is equal to the larger of the first and second values, where the first value represents the number of symbols between the sensing symbol and the last downlink symbol, and the second value represents the number of symbols between the sensing symbol and the last SSB symbol.

6. The method according to claim 4, characterized in that, If the third information sent by the network side is not received, and the first information includes the time-domain and / or frequency-domain position of the sensing symbol, N1, and N2, the first condition includes: the first RO does not precede the SSB in the corresponding PRACH time slot, and is at least N1 symbols after the last downlink symbol, and at least N1 symbols after the last SSB symbol, and at least N2 symbols after the sensing symbol; wherein, The third piece of information is used to configure the frame structure.

7. The method according to claim 4, characterized in that, If the third information sent by the network side is not received, and the first information contains N3, the first condition includes: the first RO does not precede the SSB in the corresponding PRACH slot, and is at least N5 symbols after the last downlink symbol, and at least N5 symbols after the last SSB symbol; wherein, The third piece of information is used to configure the frame structure, where N5 equals N3 plus N4.

8. The method according to claim 4, characterized in that, Upon receiving the third information sent by the network side, and provided that the first information includes the time-domain and / or frequency-domain location of the sensing symbol, N1, and N2, the first condition includes one of the following: The first RO is within the uplink symbol and is at least N2 symbols after the sensing symbol; The first RO does not precede the SSB in the corresponding PRACH slot, and is at least N1 symbols after the last downlink symbol, at least N1 symbols after the last SSB symbol, and at least N2 symbols after the sense symbol; wherein, The third piece of information is used to configure the frame structure.

9. The method according to claim 1, characterized in that, The second information includes the time-domain and / or frequency-domain location of the sensing symbol; the second condition includes M1 being less than or equal to M2, and both M1 and M2 being greater than or equal to 0, where M1 represents the number of ROs occupied by the sensing symbol among all ROs included in the second set, and M2 represents the number of ROs not occupied by the sensing symbol among all ROs included in the first set; the method further includes: If the second condition is met, the second set is expanded using the first set; or, If the second condition is not met, the second set shall not be expanded.

10. The method according to claim 9, characterized in that, The step of expanding the second set using the first set includes: Following the order of frequency domain first, then time domain, sort all the ROs in the first set that are not occupied by the sensing symbols to obtain the first sequence; The first M1 ROs in the first sequence are added to the second set to obtain the expanded second set.

11. The method according to claim 10, characterized in that, The method further includes: Using the expanded second set, a third set is determined, which contains all ROs in the expanded second set that are not occupied by the perceptual symbols; PRACH transmission is performed using the RO in the third set.

12. The method according to claim 11, characterized in that, The method further includes: The network receives a fourth message sent by the network side, the fourth message indicating the mapping type between the SSB and the RO, the mapping type including periodic mapping or continuous mapping; When performing PRACH transmission, the mapping between SSB and RO in the third set is performed using the mapping type between SSB and RO indicated by the fourth information.

13. The method according to claim 12, characterized in that, When the mapping type between SSB and RO indicated by the fourth information is a continuous mapping, the step of mapping between SSB and RO in the third set using the mapping type indicated by the fourth information includes: For each SSB index, after performing K consecutive mappings, the next SSB index is mapped. K is an integer greater than 0, and K represents the number of mapping cycles between SSB and RO within an SSB association cycle.

14. An information transmission method, characterized in that, Applied to network devices, including: Send first information to the terminal. The first information is used to indicate a first condition. The first condition is used to determine a first RO. The first condition is associated with a sensing resource. And / or, A second message is sent to the terminal, the second message being used to indicate a second condition, the second condition being used to determine whether to use the first set to expand the second set, the second condition being associated with sensing resources, the expanded second set being used to determine the ROs that the terminal can use; the first set includes the second RO, the second RO cannot be used for PRACH transmission.

15. The method according to claim 14, characterized in that, The first RO includes a third RO and a fourth RO. The third RO cannot be used for PRACH transmission, while the fourth RO can be used for PRACH transmission.

16. The method according to claim 14, characterized in that, The second set includes a fifth RO, which can be used for PRACH transmission; the sixth RO includes the second RO and the fifth RO, which is determined using a third condition that is not associated with sensing resources.

17. The method according to claim 14, characterized in that, The first information includes the time-domain and / or frequency-domain position of the sensing symbol, N1, and N2. N1 represents the number of symbols between the first RO and the last downlink symbol or the last SSB symbol, and N2 represents the number of symbols between the first RO and the last sensing symbol. Both N1 and N2 are greater than or equal to 0, and the magnitudes of N1 and N2 are related to the subcarrier spacing of the preamble. or, The first information includes N3, where N3 represents the offset of N4, and N4 represents the number of symbols between the first RO and the last downlink symbol or the last SSB symbol. Both N3 and N4 are greater than or equal to 0, and the magnitude of N3 is associated with the time domain and / or frequency domain position of the sensed symbol.

18. The method according to claim 17, characterized in that, N3 is equal to the larger of the first and second values, where the first value represents the number of symbols between the sensing symbol and the last downlink symbol, and the second value represents the number of symbols between the sensing symbol and the last SSB symbol.

19. The method according to claim 17, characterized in that, Without sending third information to the terminal, and provided that the first information includes the time-domain and / or frequency-domain position of the sensing symbol, N1, and N2, the first condition includes: the first RO does not precede the SSB in the corresponding PRACH time slot, and is at least N1 symbols after the last downlink symbol, and at least N1 symbols after the last SSB symbol, and at least N2 symbols after the sensing symbol; wherein, The third piece of information is used to configure the frame structure.

20. The method according to claim 17, characterized in that, If no third information is sent to the terminal, and the first information contains N3, the first condition includes: the first RO does not precede the SSB in the corresponding PRACH time slot, and is at least N5 symbols after the last downlink symbol, and at least N5 symbols after the last SSB symbol; wherein, The third piece of information is used to configure the frame structure, where N5 equals N3 plus N4.

21. The method according to claim 17, characterized in that, When the third information is sent to the terminal, and the first information includes the time-domain and / or frequency-domain location of the sensing symbol, N1, and N2, the first condition includes one of the following: The first RO is within the uplink symbol and is at least N2 symbols after the sensing symbol; The first RO does not precede the SSB in the corresponding PRACH slot, and is at least N1 symbols after the last downlink symbol, at least N1 symbols after the last SSB symbol, and at least N2 symbols after the sense symbol; wherein, The third piece of information is used to configure the frame structure.

22. The method according to claim 14, characterized in that, The second information includes the time-domain and / or frequency-domain location of the sensing symbol; the second condition includes M1 being less than or equal to M2, both M1 and M2 being greater than or equal to 0, M1 representing the number of ROs occupied by the sensing symbol among all ROs included in the second set, and M2 representing the number of ROs not occupied by the sensing symbol among all ROs included in the first set.

23. The method according to claim 14, characterized in that, When sending the second information to the terminal, the method further includes: A fourth message is sent to the terminal, the fourth message indicating the mapping type between SSB and RO, the mapping type including periodic mapping or continuous mapping.

24. An information transmission device, characterized in that, include: The first receiving unit is used for: The first information sent by the network side is received. The first information is used to indicate a first condition. The first condition is used to determine a first RO. The first condition is associated with the sensing resource. And / or, The system receives second information sent by the network side. The second information is used to indicate a second condition. The second condition is used to determine whether to use the first set to expand the second set. The second condition is associated with sensing resources. The expanded second set is used to determine the ROs that the terminal can use. The first set includes the second RO. The second RO cannot be used for PRACH transmission.

25. An information transmission device, characterized in that, include: The first transmitting unit is used for: Send first information to the terminal. The first information is used to indicate a first condition. The first condition is used to determine a first RO. The first condition is associated with a sensing resource. And / or, A second message is sent to the terminal, the second message being used to indicate a second condition, the second condition being used to determine whether to use the first set to expand the second set, the second condition being associated with sensing resources, the expanded second set being used to determine the ROs that the terminal can use; the first set includes the second RO, the second RO cannot be used for PRACH transmission.

26. A terminal, characterized in that, include: A first communication interface and a first processor; wherein... The first communication interface is used for: The first information sent by the network side is received. The first information is used to indicate a first condition. The first condition is used to determine a first RO. The first condition is associated with the sensing resource. And / or, The system receives second information sent from the network side. The second information is used to indicate a second condition. The second condition is used to determine whether to use the first set to expand the second set. The second condition is associated with sensing resources. The expanded second set is used to determine the ROs that the terminal can use. The first set includes the second RO. The second RO cannot be used for PRACH transmission.

27. A network device, characterized in that, include: A second communication interface and a second processor; wherein... The second communication interface is used for: Send first information to the terminal. The first information is used to indicate a first condition. The first condition is used to determine a first RO. The first condition is associated with a sensing resource. And / or, A second message is sent to the terminal, the second message being used to indicate a second condition, the second condition being used to determine whether to use the first set to expand the second set, the second condition being associated with sensing resources, the expanded second set being used to determine the ROs that the terminal can use; the first set includes the second RO, the second RO cannot be used for PRACH transmission.

28. A terminal, characterized in that, include: A first processor and a first memory for storing computer programs capable of running on the processor. Wherein, when the first processor is used to run the computer program, it performs the steps of the method according to any one of claims 1 to 13.

29. A network device, characterized in that, include: A second processor and a second memory for storing computer programs that can run on the processor. Wherein, when the second processor is used to run the computer program, it performs the steps of the method according to any one of claims 14 to 23.

30. A storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 13, or the steps of the method according to any one of claims 14 to 23.

31. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 13, or the steps of the method according to any one of claims 14 to 23.

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