Methods, devices, and computer program products for wireless communication

Abstract

Methods, devices, and computer program products for wireless communication are provided. One method includes receiving, by a second type wireless communication node from a first type wireless communication node, control information via a repeatedly transmitted physical downlink control channel (PDCCH) in one or more occasions.

Description

Technical Field

[0001] This document generally pertains to wireless communication, particularly fifth-generation (5G) or sixth-generation (6G) wireless communication. Background Technology

[0002] Base stations (BS) can use the PDCCH (Physical Downlink Control Channel) to send information to UEs (User Equipment). For UEs with relatively narrow bandwidth, PDCCH reception may suffer from performance loss due to incomplete reception. Summary of the Invention

[0003] This disclosure relates to methods, apparatus, and computer program products for receiving PDCCH.

[0004] One aspect of this disclosure relates to a wireless communication method. In an embodiment, the wireless communication method includes: a second type of wireless communication node receiving control information from a first type of wireless communication node at one or more occasions via a repeatedly transmitted physical downlink control channel (PDCCH).

[0005] Another aspect of this disclosure relates to a wireless communication method. In an embodiment, the wireless communication method includes: transmitting control information from a first type of wireless communication node to a second type of wireless communication node via a repeatedly transmitted Physical Downlink Control Channel (PDCCH) at one or more opportune times.

[0006] Another aspect of this disclosure relates to a second type of wireless communication node (e.g., a user equipment). In an embodiment, the second type of wireless communication node includes a communication unit and a processor. The processor is configured to receive control information from the first type of wireless communication node at one or more occasions via a repeatedly transmitted Physical Downlink Control Channel (PDCCH).

[0007] Another aspect of this disclosure relates to a first type of wireless communication node (e.g., a base station). In an embodiment, the first type of wireless communication node includes a communication unit and a processor. The processor is configured to transmit control information to a second type of wireless communication node via a repeatedly transmitted Physical Downlink Control Channel (PDCCH) at one or more occasions.

[0008] The various embodiments can preferably implement the following features:

[0009] Preferably, the PDCCH that is repeatedly transmitted includes Type0 PDCCH, Type0A PDCCH, Type0B PDCCH, Type1 PDCCH, or Type2 PDCCH.

[0010] Preferably, the second type of wireless communication node periodically monitors the retransmitted PDCCH on one or more time slots, or the second type of wireless communication node assumes or expects that the PDCCH is periodically retransmitted on one or more time slots.

[0011] Preferably, the timing is predetermined or determined based on at least one of time slot n0 or time slot n0+1, which is used by the second type of wireless communication node to monitor the PDCCH within the Type0-PDCCH CSS set.

[0012] Preferably, the retransmitted PDCCH can be sent at the timing of time slot n0 associated with the same SSB index in different SSB burst sets, or the retransmitted PDCCH can be sent at the timing of time slot n0+1 associated with the same SSB index in different SSB burst sets; or the retransmitted PDCCH can be sent at the timing of time slots n0 and n0+1 associated with the same SSB index in different SSB burst sets.

[0013] Preferably, the search space set for transmitting the PDCCH in at least one of time slots n0 or n0+1 is: predetermined, assumed by the second type of wireless communication node, anticipated by the second type of wireless communication node, or determined by one or more indications of at least one of the System Information Block (SIB) (including SIB1) or the Master Information Block (MIB).

[0014] Preferably, the PDCCH is repeatedly transmitted on all search space sets based on the synchronization signal / PBCH block SSB index in time slot n0 or n0+1;

[0015] Preferably, the period of the repeatedly transmitted PDCCH is determined by: a predetermined period, an assumption of the second type of wireless communication node, an expectation of the second type of wireless communication node, or by one or more indications of at least one of the System Information Block (SIB) (including System Information Block #1, SIB1) or the Master Information Block (MIB).

[0016] Preferably, the period indicated via MIB or SIB is greater than or equal to the period of SSB for the cell.

[0017] Preferably, the second type of wireless communication node monitors the retransmitted PDCCH at different times according to at least one of the following:

[0018] One or more first indices;

[0019] One or more candidate PDCCHs; or

[0020] One or more aggregation levels AL;

[0021] One of the first indices includes at least one of the control channel unit (CCE) index for ALL, or the index offset i for ALL, where i = 0, ..., L-1.

[0022] One of the PDCCH candidates includes in It concerns the number of PDCCH candidates for the following: for n CI In the corresponding serving cell, the second type of wireless communication node is configured to monitor the aggregation level L of the search space set s.

[0023] Preferably, at least one of the first index, PDCCH candidate, or AL for the repeated PDCCH at different times is: predetermined, assumed by the second type of wireless communication node, anticipated by the second type of wireless communication node, or determined by one or more indications of at least one of SIB or MIB.

[0024] Preferably, for one or more ALs, the second type of wireless communication node uses the same index in the first index and the same PDCCH candidate in the PDCCH candidate at different times to monitor the repeatedly transmitted PDCCH.

[0025] Preferably, for one or more ALs, the second type of wireless communication node uses multiple identical indices in the first index and multiple identical candidates in the PDCCH candidates at different times to monitor repeatedly transmitted PDCCHs.

[0026] Preferably, for one or more ALs, the second type of wireless communication node monitors repeatedly transmitted PDCCHs based on one or more PDCCH candidates at different times.

[0027] Preferably, for one or more ALs, the second type of wireless communication node monitors repeatedly transmitted PDCCHs at different times based on one or more identical indices in the first index.

[0028] Preferably, for one or more ALs, the second type of wireless communication node uses different indices in the first index or different PDCCH candidates in the PDCCH candidates at different times to monitor repeatedly transmitted PDCCHs.

[0029] Preferably, the PDCCH or PDCCH timing of repeated transmission is defined within a time window, wherein the length of the time window is: predetermined, assumed by the second type of wireless communication node, anticipated by the second type of wireless communication node, or determined by one or more indications of at least one of the SIB or MIB.

[0030] Preferably, the indication in the MIB may include at least one of the following: MIB reserved bits, PBCH payload bits, or MIB field bits.

[0031] Preferably, the length of the time window includes at least one of the following:

[0032] Time period;

[0033] Time period based on timer;

[0034] Based on the SSB period or a time period of 20 milliseconds;

[0035] The time period is based on the system frame number (SFN).

[0036] Based on a time period in microseconds, milliseconds, or seconds; or

[0037] The number of times one or more PDCCHs are repeatedly sent.

[0038] Preferably, the length of the time window is based on one or more indications in the MIB field.

[0039] Preferably, the aggregation level of the search space set for repeatedly transmitted PDCCH is: predetermined, assumed by the second type of wireless communication node, anticipated by the second type of wireless communication node, or determined by one or more indications of at least one of SIB or MIB.

[0040] Preferably, the PDCCH is assumed, expected, configured, instructed, or predetermined to be transmitted every X units of time, where X units of time are based on half-frames, time periods, SSB periods, time slots, milliseconds, microseconds, seconds, or SFNs, and X is an integer.

[0041] Preferably, the indication for activating or deactivating the monitoring or decoding of repeatedly transmitted PDCCH is determined by one or more indications of at least one of SIB or MIB.

[0042] Preferably, the indication for activating or deactivating the monitoring or decoding of repeatedly transmitted PDCCHs is determined by at least one of the following conditions:

[0043] The bandwidth of CORESET#0 is greater than the maximum channel bandwidth of the second type of wireless communication node;

[0044] The maximum channel bandwidth of the second type of wireless communication node is less than the system bandwidth or transmission bandwidth.

[0045] And allow second-type wireless communication nodes to access the network or cell.

[0046] Preferably, the method further includes a second type of wireless communication node receiving a first portion of the PDCCH in a first defined symbol and a second portion of the PDCCH in a second defined symbol using the maximum channel bandwidth or the maximum number of physical resource blocks (PRBs).

[0047] Preferably, the frequency position of the second part of the PDCCH is within the frequency position of the first part of the PDCCH.

[0048] Preferably, the bandwidth of the first part and the second part of the PDCCH does not exceed the maximum channel bandwidth of the second type of wireless communication node, or the number of PRBs in the first part and the second part of the PDCCH does not exceed the maximum number of PRBs in the second type of wireless communication node.

[0049] Preferably, the third part of the PDCCH is defined in the first definition symbol, and the frequency domain resource allocation (FDRA) of the first part and the third part of the PDCCH is indicated via MIB.

[0050] Preferably, the third part of the PDCCH is defined in the first definition symbol, and the frequency position of the third part of the PDCCH is different from the frequency position of the second part of the PDCCH.

[0051] Preferably, the frequency position of the second part of the PDCCH is the first M RBs of the frequencies indicated by the FDRA used for the first part and the third part of the PDCCH. Preferably, the frequency position is the last M RBs of the frequencies indicated by the FDRA, or preferably, the middle M RBs of the frequencies indicated by the FDRA, where M is an integer.

[0052] Preferably, the Time Domain Resource Allocation (TDRA) indication in the downlink control information (DCI) carried in the PDCCH specifies that the starting symbol of the repeatedly transmitted PDCCH is 2, 4, or an integer not less than 6.

[0053] Preferably, the first type of wireless communication node periodically transmits control information via repeatedly transmitted PDCCH in one or more time slots.

[0054] Preferably, these timings are predetermined or determined based on at least one of time slot n0 or time slot n0+1, which is used by the first type of wireless communication node to transmit control information via PDCCH within the Type0-PDCCH CSS set.

[0055] Preferably, the search space set for transmitting the PDCCH in at least one of time slots n0 or n0+1 is: predetermined, or determined by one or more indications of at least one of the System Information Block (SIB) (including SIB1) or the Master Information Block (MIB).

[0056] Preferably, the period of the PDCCH used for repeated transmission is determined in advance or by one or more indications of at least one of the System Information Block (SIB) (including System Information Block #1, SIB1) or the Master Information Block (MIB).

[0057] Preferably, the first type of wireless communication node transmits control information via repeatedly transmitted PDCCH at different times according to at least one of the following:

[0058] One or more first indices;

[0059] One or more PDCCH candidates; or

[0060] One or more aggregation levels AL;

[0061] Wherein, one of the first indices includes at least one of the control channel unit (CCE) index for ALL, or the index offset i for ALL, and i = 0,...,L-1.

[0062] One of the PDCCH candidates includes in It concerns the number of PDCCH candidates for the following: for n CI In the corresponding serving cell, the first type of wireless communication node is configured to send control information for the aggregation level L of the search space set s.

[0063] Preferably, at different times, at least one of the first index, PDCCH candidate, or AL for the repeated PDCCH is: predetermined or determined by one or more indications of at least one of SIB or MIB.

[0064] Preferably, for one or more ALs, the first type of wireless communication node uses the same index in the first index and the same PDCCH candidate in the PDCCH candidate to transmit control information via repeatedly transmitted PDCCH at different times.

[0065] Preferably, for one or more ALs, the first type of wireless communication node transmits control information via repeatedly transmitted PDCCH at different times using multiple identical indices in the first index and multiple identical candidates in the PDCCH candidates.

[0066] Preferably, for one or more ALs, the first type of wireless communication node transmits control information via repeatedly transmitted PDCCH based on one or more PDCCH candidates at different times.

[0067] Preferably, for one or more ALs, the first type of wireless communication node transmits control information via repeatedly transmitted PDCCH based on one or more identical indices of the first index at different times.

[0068] Preferably, for one or more ALs, the first type of wireless communication node transmits control information via repeatedly transmitted PDCCH at different times using different indices in the first index or different PDCCH candidates in the PDCCH candidates.

[0069] Preferably, the PDCCH or PDCCH timing of repeated transmissions is defined within a time window, wherein the length of the time window is: predetermined or determined by one or more indications of at least one of the SIB or MIB.

[0070] Preferably, the aggregation level of the search space set for repeatedly transmitted PDCCHs is: predetermined, or determined by one or more indications of at least one of SIB or MIB.

[0071] Preferably, the method further includes: transmitting, from a first type of wireless communication node to a second type of wireless communication node, a first part of the PDCCH in a first defined symbol and a second part of the PDCCH in a second defined symbol, using the maximum channel bandwidth or the maximum number of physical resource blocks (PRBs).

[0072] Preferably, the frequency position of the second part of the PDCCH is within the frequency position of the first part of the PDCCH.

[0073] Preferably, the bandwidth of the first part and the second part of the PDCCH does not exceed the maximum channel bandwidth of the second type of wireless communication node, or the number of PRBs in the first part and the second part of the PDCCH does not exceed the maximum number of PRBs in the second type of wireless communication node.

[0074] The exemplary embodiments disclosed herein are intended to provide features that will become apparent from the following description taken in conjunction with the accompanying drawings. Example systems, methods, apparatuses, and computer program products are disclosed herein according to various embodiments. However, it should be understood that these embodiments are presented by way of example and not limitation, and it will be apparent to those skilled in the art who have read this disclosure that various modifications can be made to the disclosed embodiments while remaining within the scope of this disclosure.

[0075] Therefore, this disclosure is not limited to the exemplary embodiments and applications described and illustrated herein. Furthermore, the specific order and / or hierarchy of steps in the methods disclosed herein are merely exemplary methods. Depending on design preferences, the specific order or hierarchy of steps in the disclosed methods or processes may be rearranged while still remaining within the scope of this disclosure. Therefore, those skilled in the art will understand that the methods and techniques disclosed herein present various steps or behaviors in a sample order, and unless otherwise expressly stated, this disclosure is not limited to the specific order or hierarchy presented. Attached Figure Description

[0076] The above and other aspects and their implementations are described in more detail in the accompanying drawings, description and claims.

[0077] Figure 1 A schematic diagram of the resource block arrangement according to an embodiment of the present disclosure is shown.

[0078] Figure 2 A schematic diagram of the resource block arrangement according to another embodiment of the present disclosure is shown.

[0079] Figure 3 A schematic diagram of the resource block arrangement according to another embodiment of the present disclosure is shown.

[0080] Figure 4 A schematic diagram of time-domain resource allocation according to another embodiment of the present disclosure is shown.

[0081] Figure 5 A schematic diagram of a wireless communication terminal according to an embodiment of the present disclosure is shown.

[0082] Figure 6 A schematic diagram of a wireless communication node according to an embodiment of the present disclosure is shown. Detailed Implementation

[0083] In some embodiments, the second type of wireless communication node includes a UE, a RedCap (reduced capability) UE, and / or at least one of one or more types of UEs.

[0084] In some embodiments, the first type of wireless communication includes at least one of a base station, gNB, eNB, repeater, etc.

[0085] In some embodiments, the MIB indicator bits include at least one of the reserved bits in the MIB, the fields in the MIB, and / or the PBCH payload bits.

[0086] In some embodiments, the PBCH payload bits include

[0087] In this disclosure, unless otherwise expressly stated, the term "monitoring" is understood to mean that monitoring, decoding, and / or combining operations are performed. For example, the phrase "UE monitors repeatedly transmitted PDCCH" can be understood as "UE monitors, combines, or decodes repeatedly transmitted PDCCH".

[0088] In some embodiments, the PDCCH candidate set for a UE can be defined in terms of a PDCCH search space set. The search space set can be a CSS (Common Search Space) set or a USS (UE-Specific Search Space) set. The UE monitors PDCCH candidates within one or more of the following search space sets:

[0089] - The Type 0-PDCCHCSS set configured for DCI (Downlink Control Information) format 1_0 by pdcch-ConfigSIB1 in MIB (Master Information Block), searchSpaceSIB1 in PDCCH-ConfigCommon, or searchSpaceZero in PDCCH-ConfigCommon, has its CRC (Cyclic Redundancy Check) scrambled by SI-RNTI (System Information - Radio Network Temporary Identifier). Or, when pdcch-Config-MCCH or pdcch-Config-MCCH is not provided, searchSpaceZero in PDCCH-ConfigCommon is used for the DCI format on the primary cell of the MCG (Primary Cell Group), and its CRC is scrambled by MCCH-RNTI (MBS (Multicast and Broadcast Service) Control Channel - Radio Network Temporary Identifier) ​​or G-RNTI (Group - Radio Network Temporary Identifier).

[0090] - The Type 0A-PDCCHCSS set configured for DCI format 1_0 by searchSpaceOtherSystemInformation in PDCCH-ConfigCommon, whose CRC is scrambled by SI-RNTI on the primary cell of the MCG;

[0091] - The Type0B-PDCCH CSS set configured by searchSpaceBroadcast in pdcch-Config-MCCH and pdcch-Config-MTCH for DCI format on the primary cell of MCG, whose CRC is scrambled by MCCH-RNTI or G-RNTI;

[0092] The ra-SearchSpace in -PDCCH-ConfigCommon is the Type 1-PDCCHCSS set configured in DCI format 1_0, whose CRC is scrambled by RA-RNTI, MsgB-RNTI or TC-RNTI (temporary C-RNTI) on the primary cell; and / or

[0093] The pagingSearchSpace in -PDCCH-ConfigCommon is a Type2-PDCCHCSS set configured in DCI format 1_0, whose CRC is scrambled by the P-RNTI (paging RNTI) on the primary cell of the MCG.

[0094] In some embodiments, for operations without shared spectrum channel access and for SS / PBCH block (SSB) and CORESET (control resource set) multiplexing mode 1, the UE monitors the PDCCH within the Type 0-PDCCH CSS set on two time slots n0. For the SS / PBCH block with index i, the UE determines time slot n0 as... Where time slot n0 has a system frame number (SFN) SFN C In the frame, satisfying SFN c mod2 = 0, if Or in the presence of SSFNSFN C In the frame, satisfying SFN c mod2 = 1, if Where μ∈{0,1,2,3,5,6} is based on the SCS used for PDCCH reception in CORESET.

[0095] In some embodiments, for μ∈{0,1,2,3} and for the SS / PBCH block with index i, the two time slots that include the relevant Type 0-PDCCH monitoring timing are time slots n0 and n0+1. The table below provides the indices of M, O, and the first symbol of CORESET in time slots n0 and n0+1.

[0096]

[0097] In some embodiments, for in It is the maximum number of SSBs in the SSB set. From the one-to-one mapping with the index of the DM-RS (Demodulation Reference Signal) sequence transmitted in the PBCH (Physical Broadcast Channel), the UE determines the 3 LSB (least significant bit) bits of the candidate SS / PBCH block index for each half frame.

[0098] In some embodiments, for UE from PBCH payload bits Determine one MSB (most significant bit) of the candidate SS / PBCH block index.

[0099] In some embodiments, for UE from PBCH payload bits Determine the two MSB bits of the candidate SS / PBCH block index.

[0100] In some embodiments, for UE from PBCH payload bits Determine the 3 MSB bits of the candidate SS / PBCH block index.

[0101] Many embodiments of this disclosure are described below, but this disclosure is not limited thereto.

[0102] Example 1:

[0103] In this embodiment, the PDCCH is transmitted repeatedly. In this embodiment, the PDCCH includes Type0-PDCCH, Type0A-PDCCH, Type0B-PDCCH, Type1-PDCCH, or Type2-PDCCH.

[0104] In this embodiment, the UE can monitor one or more PDCCH timings to receive repeatedly transmitted PDCCHs. In this embodiment, the UE can decode / monitor / combine multiple repeated PDCCHs to improve decoding performance.

[0105] Example 1.1: Predefined Repeated PDCCH Transmission

[0106] In an embodiment, the gNB (gNodeB) may transmit repeatedly sent PDCCHs in time slots n0 and / or n0+1. In an embodiment, the UE may assume or expect that the repeatedly sent PDCCHs will be transmitted in time slots n0 and / or n0+1 and monitor the PDCCHs in time slots n0 and / or n0+1.

[0107] In an embodiment, the second type of wireless communication node periodically monitors, combines, and / or decodes repeatedly transmitted PDCCH on one or more time slots, or the second type of wireless communication node assumes or expects that the PDCCH is periodically repeated on one or more time slots.

[0108] In an embodiment, a repeatedly transmitted PDCCH may be transmitted at an opportune time in slot n0 associated with the same SSB index in different SSB burst sets, or at an opportune time in slot n0+1 associated with the same SSB index in different SSB burst sets; or at an opportune time in slots n0 and n0+1 associated with the same SSB index in different SSB burst sets.

[0109] In an embodiment, the search space set for transmitting the PDCCH in at least one of time slots n0 or n0+1 is: predetermined, assumed by the second type of wireless communication node, anticipated by the second type of wireless communication node, or determined by one or more indications of at least one of the System Information Block (SIB) (including SIB1) or the Master Information Block (MIB).

[0110] In this embodiment, the repeated PDCCH is transmitted on a first search space set of slot n0 associated with the same SSB index within different SSB burst sets. Based on the SSB period of 20ms, the PDCCH repetition period is one of the following: 20ms, 40ms, 80ms or longer, wherein the PDCCH repetition period is not less than the SSB period.

[0111] In this embodiment, the repeated PDCCH is sent on the first search space set of slot n0 associated with the same SSB index within different SSB burst sets. The PDCCH repetition period is one of the following: 10ms, 20ms, 40ms, 80ms or longer.

[0112] In an embodiment, one bit in SIB1 / MIB is used to indicate that the period of PDCCH repetition in time slot n0 is 20ms.

[0113] In an embodiment, the aggregation level of the search space set for repeatedly transmitted PDCCHs is determined by: a predetermined level, an assumption of the second type of wireless communication node, an expectation of the second type of wireless communication node, or by one or more indications of at least one of SIB or MIB.

[0114] In the embodiments, AL = 4, 8, or 16 is used for repeated PDCCHs. The first index and / or PDCCH candidates can be different or the same.

[0115] In the embodiments, AL = 4, 8, or 16 is used for repeated PDCCHs. For an SSB index within an SSB burst set or in a cycle of repeated PDCCHs, a first index and a first PDCCH candidate are used to transmit repeated PDCCHs in slot n0.

[0116] In an embodiment, SIB1 / MIB indicates the AL for a repeating PDCCH. For example, 1 bit indicates {4,8} or {2,4}; for example, 2 bits indicate {1,2,4,8} or {2,4,8,16}; or 3 bits in SIB1MIB are used.

[0117] In an embodiment, the gNB (gNodeB) may transmit a retransmitted PDCCH every X ms in time slots n0 and / or n0+1. In an embodiment, the UE may assume or expect that the retransmitted PDCCH will be transmitted every X ms in time slots n0 and / or n0+1, and monitor time slots n0 and / or n0+1 every X ms, where X is an integer.

[0118] In this embodiment, the PDCCH is assumed, expected, configured, instructed, or predetermined to be transmitted every X units of time, where X units of time are based on half-frames, time periods, SSB periods, time slots, milliseconds, microseconds, seconds, or SFNs, and X is an integer. For example, X can be 5, 10, 15, 20, 40, or 80.

[0119] In this embodiment, for the SS / PBCH block with index i, the UE can determine the index of slot n0 as... It has a system frame number (SFN) SFN C In the frame, satisfying SFN c mod2 = 0, if Or in the presence of SFN C In the frame, satisfying SFN c mod2 = 1, if Where μ∈{0,1,2,3,5,6} is based on the SCS of the PDCCH repeating in CORESET, the indices of M, O and the first symbol of CORESET in slots n0 and n0+1 are provided in Table 13-11.

[0120] Table 13-11: PDCCH monitoring timing for Type 0-PDCCH CSS set - SS / PBCH blocks and parameters for CORESET multiplexing modes 1 and FR1

[0121]

[0122] In the embodiments, Xms can be 20ms, 40ms, 80ms, 10ms, 5ms, or have the same period as SIB1 (System Information Block #1), SSB, PBCH (Physical Broadcast Channel), and / or the SSB in the serving cell (e.g., ssb-periodicityServingCell).

[0123] Example 1.2:

[0124] In an embodiment, for the aggregation level L of the search space set s of the serving cell, the PDCCH can be repeatedly transmitted on predefined (CCE) indexes and / or numbered candidates. For example, for the AL of the search space, the UE can anticipate that the repeatedly transmitted PDCCH can be transmitted on predefined numbered candidates and / or (CCE) indexes. Then, the UE can monitor / decode / combine candidates using the first index and / or the same number at different times. PDCCH.

[0125] In an embodiment, the first index may include a CCE index and an index offset i, wherein the CCE index is based on:

[0126]

[0127] Where i is the index offset, i = 0, ..., L-1 yes..., It is a PDCCH candidate. and It concerns the number of PDCCH candidates for the following: for n CI For the corresponding serving cell, the UE is configured to monitor the aggregation level L for the search space set s, N CCE,p It is the number of CCEs in CORESET p, and if applicable, for each RB set.

[0128] As shown below:

[0129] For any CSS,

[0130] For USS, Y p,-1 =n RNTI ≠0, for pmod3=0, Ap=39827, for pmod3=1, Ap=39829, for pmod3=2, Ap=39839, and D=65537.

[0131] In an embodiment, gNB can utilize the first index and number candidate at different times. Send repeatedly transmitted PDCCH. In the embodiment, the UE may assume that the UE can monitor / decode / combine the first index and number candidate at different times. The PDCCH. For example, for different PDCCH timings, a (repeated) PDCCH might be sent only based on a predefined first index and number candidate. Furthermore, the first index could be an index offset i = 0 or a CCE index = 0 or 1, and the number candidate could be...

[0132] In an embodiment, the UE may assume that the repeatedly transmitted PDCCH can be decoded on the first candidate of each AL with index offset i = 1 or 0. In an embodiment, the UE may assume that the repeatedly transmitted PDCCH can be decoded on the first candidate of each AL with CCE index = 0.

[0133] In this embodiment, for different PDCCH timings, the PDCCH may be transmitted only based on a predefined first index and number candidate. Furthermore, for different PDCCH timings, the UE can monitor / decode / combine PDCCHs repeatedly transmitted with the same first index and number candidate, where the first index can be at least one of i (i = 0, 1, 2, 3) or CCE index (CCE index = 0, 1, 2, 3), and the number candidate can be...

[0134] In an embodiment, gNB can utilize several indices and several number candidates at different times. Send PDCCH (the UE may assume that it can monitor / decode / combine repeatedly transmitted PDCCH), where in It concerns the number of PDCCH candidates for the following: for n CI For the corresponding serving cell, the UE is configured to monitor the aggregation level L for the search space set s; the CCE index is derived according to the following formula:

[0135]

[0136] In this embodiment, for different PDCCH timings, PDCCHs can be transmitted on predefined first index and number candidates. Furthermore, for different PDCCH timings, the UE can monitor / decode / combine PDCCHs using the same or different first index and number candidates.

[0137] In an embodiment, the gNB may send PDCCHs that are repeatedly sent at different times based on a first index or different first indices.

[0138] In an embodiment, the gNB may send PDCCHs that are repeatedly sent at different times based on numbered candidates or different numbered candidates.

[0139] In this embodiment, the period for PDCCH repetition can be 20ms.

[0140] In the embodiments, it can be assumed that the PDCCH timing is in slot n0 or n0+1.

[0141] In the embodiment, it can be assumed that the PDCCH timing is in the symbol of time slot n0 or n0+1. middle.

[0142] In this embodiment, as shown in the table below, the sign of the assumed PDCCH timing is determined based on the index indication. For example, as illustrated in the table below, for indices = 1, 3, 5, 7, the sign of the assumed PDCCH timing is 0 or...

[0143]

[0144] In the embodiments, the time window is 20ms, 40ms, or 80ms, wherein the time window is used for the UE to decode / monitor / combine PDCCHs that are repeatedly transmitted within the duration.

[0145] In an embodiment, the number of PDCCH opportunities can be one of the following: {1, 2, 4, 8}, wherein the number of PDCCH opportunities can be assumed to be used for UE decoding / monitoring / combining repeatedly transmitted PDCCH.

[0146] In an embodiment, the UE may assume AL to be 4, 8, or 16 for decoding / monitoring / combining repeatedly transmitted PDCCH.

[0147] Example 2:

[0148] In an embodiment, the period of the PDCCH used for repeated transmission is determined by: a predetermined period, an assumption by the second type of wireless communication node, an expectation by the second type of wireless communication node, or by one or more indications of at least one of the System Information Block (SIB) (including System Information Block #1, SIB1) or the Master Information Block (MIB).

[0149] In an embodiment, the SIB, SIB1, MIB, and / or PBCH payloads may indicate a repetition period (e.g., the period of repeatedly transmitted PDCCH).

[0150] In an embodiment, the period indicated via MIB or SIB is greater than or equal to the period of SSB for the cell.

[0151] In embodiments, 1 bit, 2 bits, or 3 bits may be used in the SIB, SIB1, MIB, and / or PBCH payload to indicate the period of the PDCCH repetition cycle (e.g., for UE monitoring or decoding PDCCH timing and monitoring / decoding / combining PDCCH), indicating at least one of {5ms, 10ms, 20ms, 40ms, 80ms}. For example:

[0152] 1-bit example: indicating {20ms, 40ms};

[0153] 2-bit example: Indicates {10ms, 20ms, 40ms, 80ms};

[0154] 3-bit example: Indicates {5ms, 10ms, 20ms, 40ms, 80ms, 160ms, idle, idle}.

[0155] In an embodiment, the period for the UE to decode / monitor / combine the PDCCH can be less than or equal to the period of the SSB period indicated by the ssb-periodicityServingCell.

[0156] In the embodiment, the UE may assume that the PDCCH is transmitted with a default period of 20ms.

[0157] In the embodiments, 1 or 2 bits are used in the SIB, SIB1, MIB, and / or PBCH payloads to indicate the decoding mode.

[0158] In an embodiment, 1 bit in SIB1 can be used to indicate whether a retransmitted PDCCH will be sent, or whether the UE can anticipate a retransmitted PDCCH. For example, a value of 1 can indicate that the UE can anticipate and / or monitor the PDCCH at predefined, configured, and / or indicated times, and a value of 0 can indicate that the UE does not need to anticipate and / or monitor the retransmitted PDCCH.

[0159] In embodiments, 2 bits in the SIB, SIB1, MIB, and / or PBCH payload can be used to indicate the decoding mode. For example, 11 can indicate that the UE can anticipate and / or monitor the PDCCH in time slots n0 and n0+1. For example, 10 can indicate that the UE can anticipate and / or monitor the PDCCH in time slot n0 or n0+1. For example, 01 can indicate that the UE can anticipate and / or monitor the PDCCH in time slot n0+1 or n0. For example, 00 can indicate that the UE does not need to anticipate and / or monitor repeatedly transmitted PDCCH.

[0160] In the embodiments, 1 bit, 2 bits, or 3 bits may be used in the SIB, SIB1, MIB, and / or PBCH payload to indicate the time window length for when the UE monitors or decodes the PDCCH, in order to decode / monitor / combine repeatedly transmitted PDCCHs, and the time window length may include at least one of {5ms, 10ms, 20ms, 40ms, 80ms, 160ms}.

[0161] In embodiments, 1 bit, 2 bits, or 3 bits may be used in the SIB, SIB1, MIB, and / or PBCH payload to indicate the number of PDCCH moments used for PDCCH decoding / monitoring / combining, and the number of PDCCH moments includes at least one of {1, 2, 4, 6, 8, 10, 12, 16, 32}. The number of PDCCH moments used for PDCCH decoding / monitoring / combining shall not exceed 32. For example:

[0162] One bit in the SIB, SIB1, MIB, and / or PBCH payload can indicate {2, 4} (if this parameter is missing, it may indicate the absence of a PDCCH timing combination); and

[0163] Two bits in the SIB, SIB1, MIB, and / or PBCH payload can indicate {2, 4, 8, 16} (if this parameter is missing, it may indicate no PDCCH timing combination).

[0164] In the embodiment, based on a 5ms half-frame (i.e., each half-frame is 5ms), the 32 bits in the SIB can be used to indicate which half-frame can send the PDCCH, and the UE can monitor the PDCCH in that half-frame.

[0165] In this embodiment, based on a 20ms half-frame, each of the 8 bits in the SIB can be used to indicate which half-frame can send the PDCCH, and the UE can monitor the PDCCH in that half-frame.

[0166] In an embodiment, based on the SSB period (e.g., ssb-periodicityServingCell), the number of bits can be equal to 160 divided by the SSB period. Each bit can indicate whether the PDCCH can be decoded / monitored in the half-frame where the SSB burst is set. For example

[0167] - If ssb-periodicityServingCell = 40ms, the bitmap size can be 4 bits. Each of the 4 bits in SIB1 can be used to indicate whether the PDCCH will be sent in a half-frame with an SSB burst.

[0168] - If ssb-periodicityServingCell = 20ms, the bitmap size can be 8 bits. Each bit in the 8 bits of SIB1 can be used to indicate whether the PDCCH will be sent in a half-frame with an SSB burst.

[0169] In an embodiment, the SIB, SIB1, MIB, and / or MIB payload may indicate repeated PDCCH transmissions, including at least one of the following: PDCCH number candidate, (CCE) index, PDCCH timing, decoding window, decoding mode, and AL.

[0170] In an embodiment, the second type of wireless communication node monitors, combines, and / or decodes PDCCHs that are repeatedly transmitted at different times according to at least one of the following:

[0171] One or more first indices;

[0172] One or more PDCCH candidates; or

[0173] One or more aggregation levels AL;

[0174] Wherein, one of the first indices includes at least one of the control channel unit (CCE) index for ALL, or the index offset i for ALL, and i = 0, ..., L-1.

[0175] One of the PDCCH candidates includes in It concerns the number of PDCCH candidates for the following: for n CI In the corresponding serving cell, the second type of wireless communication node is configured to monitor the aggregation level L of the search space set s.

[0176] In an embodiment, the SIB, SIB1, MIB, and / or PBCH payloads may indicate the following for repetitive PDCCHs:

[0177] 1 to 4 bits for one or more first indices;

[0178] 1 to 4 bits for one or more PDCCH candidates; and / or

[0179] 1 to 3 bits for one or more aggregation levels AL.

[0180] In an embodiment, the X bit in the SIB, SIB1, MIB, and / or PBCH payload may indicate a first index, a PDCCH candidate, and / or AL, where X>=0.

[0181] In an embodiment, at least one of the first index, PDCCH candidate, or AL used for repeating the PDCCH at different times is: predetermined, assumed by the second type of wireless communication node, anticipated by the second type of wireless communication node, or determined by one or more indications of at least one of SIB or MIB.

[0182] In an embodiment, for one or more ALs, the second type of wireless communication node uses the same index in the first index and the same PDCCH candidate in the PDCCH candidate at different times to monitor, combine, and / or decode the repeatedly transmitted PDCCH.

[0183] In an alternative embodiment, for one or more ALs, the second type of wireless communication node uses multiple identical indices in the first index and multiple identical candidates in the PDCCH candidates at different times to monitor, combine, and / or decode repeatedly transmitted PDCCHs.

[0184] In an alternative embodiment, for one or more ALs, a second type of wireless communication node monitors, combines, and / or decodes repeatedly transmitted PDCCHs based on one or more PDCCH candidates at different times.

[0185] In an alternative embodiment, for one or more ALs, a second type of wireless communication node monitors, combines, and / or decodes repeatedly transmitted PDCCHs at different times based on one or more identical indices in the first index.

[0186] In an embodiment, for one or more ALs, a second type of wireless communication node uses different indices in the first index or different PDCCH candidates in the PDCCH candidates at different times to monitor, combine, and / or decode repeatedly transmitted PDCCHs.

[0187] In this embodiment, for each timing of PDCCH decoding / monitoring / combining, the SIB, SIB1, MIB, and / or PBCH payloads may indicate numbered candidates. The UE can monitor / decode / combine received PDCCHs with the same numbered candidate (candidate index) based on type 0CSS AL.

[0188] CCE Convergence Level Candidates 4 4 8 2 16 1

[0189] For example:

[0190] - For AL=4, 2 bits can be used to indicate which candidate index in {0, 1, 2, 3} is selected for PDCCH decoding / monitoring / combination, and / or 2 bits can be used to indicate which first index in {0, 1, 2, 3} is selected for PDCCH decoding / monitoring / combination;

[0191] - For AL=4, a 4-bit bitmap can be used to indicate which candidate indices in {0, 1, 2, 3} are selected for PDCCH decoding / monitoring / combination, and / or a 4-bit bitmap can be used to indicate which first indices in {0, 1, 2, 3} are selected for PDCCH decoding / monitoring / combination;

[0192] - For AL=8, a 1-bit or 2-bit bitmap can be used to indicate which candidate indices in {0, 1} are selected for PDCCH decoding / monitoring / combination, and / or a 3-bit bitmap can be used to indicate which first index is used; and / or

[0193] - For AL16, candidate index 0 can be assumed to be used for PDCCH decoding / monitoring / combining, and / or 4 bits can be used to indicate which first index to use.

[0194] In the embodiments, all of the above situations can be indicated by a bitmap, such as the 7-bit bitmap illustrated in the table below.

[0195]

[0196] In an embodiment, for each timing of PDCCH decoding / monitoring / combining, the SIB / SIB1 / MIB and / or PBCH payload may have a CCE index. The UE may monitor / decode / combine PDCCHs received based on the same CCE index of the AL of type 0CSS. For example:

[0197] - For AL=4, 2 bits can be used to indicate which (CCE) index in {0, 1, 2, 3} (e.g., the same as the first index) is selected for PDCCH decoding / monitoring / combining;

[0198] - For AL=4, a 4-bit bitmap can be used to indicate which indices in {0, 1, 2, 3} with offset A are selected for PDCCH decoding / monitoring / combination;

[0199] - For AL=8, an 8-bit bitmap or 3 bits can be used to indicate which indices with offset A between 0 and 7 are selected for decoding / monitoring / combining; and / or

[0200] - For AL16, a 16-bit bitmap or 4 bits can be used to indicate which candidate index with offset A between 0 and 15 is used for PDCCH decoding / monitoring / combining. A is the offset determined according to the following formula:

[0201]

[0202] The parameters in this formula can be determined through the above embodiments, and will not be repeated here.

[0203] In an embodiment, the PDCCH or PDCCH timing of repeated transmissions is defined within a time window, wherein the length of the time window is: predetermined, assumed by the second type of wireless communication node, anticipated by the second type of wireless communication node, or determined by one or more indications of at least one of the SIB or MIB.

[0204] In the embodiments, the length of the time window includes at least one of the following:

[0205] Time period;

[0206] Time period based on timer;

[0207] Based on the SSB period or a time period of 20 milliseconds;

[0208] The time period is based on the system frame number (SFN).

[0209] Based on time periods in microseconds, milliseconds, or seconds; and / or

[0210] The number of times one or more PDCCHs are repeatedly sent.

[0211] In this embodiment, the length of the time window is based on one or more indications in the MIB field.

[0212] In the embodiments, the length of the time window includes {5, 10, 15, 20, 40, 80, 160}, and the time unit is: time slot, ms, us, 10ms, 20ms, SSB period, etc.

[0213] In this embodiment, the time window is between the start and expiration of the timer, and the timer is triggered via the SIB, SIB1, MIB and / or PBCH payloads.

[0214] In this embodiment, the length of the time window is obtained based on SFN, for example, SFN mod X = 0, where X can be 160, 80 or other values.

[0215] Example 3:

[0216] In an embodiment, the indication for activating or deactivating the decoding / monitoring / combining of repeatedly transmitted PDCCHs is determined by one or more indications of at least one of SIBs or MIBs.

[0217] In an embodiment, using X ms (e.g., X = 40ms or 80ms), one or two indicator bits in the MIB can be used to indicate whether the PDCCH should be retransmitted or whether the UE should anticipate and / or monitor retransmitted PDCCH.

[0218] In an embodiment, using X ms (e.g., X = 40ms or 80ms), one or two indicator bits in the MIB can be used to indicate in which time slot (n0 and / or n0+1) the PDCCH will be repeatedly transmitted, or the UE should expect and / or monitor the repeatedly transmitted PDCCH.

[0219] In this embodiment, one indicator bit in the MIB can be used to indicate whether PDCCH decoding / monitoring / combining features are supported. PDCCH can be used to schedule SIB1 or OSI messages.

[0220] In this embodiment, one or two indicator bits in the MIB can be reserved bits in the MIB or PBCH payload bits. For example, one indicator bit can come from one reserved bit in the MIB, or a PBCH payload bit. or PBCH payload bits For example, the two indicator bits can come from the PBCH payload bits. and PBCH payload bits

[0221] In this embodiment, the indication for decoding / monitoring / combining repeatedly transmitted PDCCHs to activate or deactivate them is determined by at least one of the following conditions:

[0222] The bandwidth of CORESET#0 is greater than the maximum channel bandwidth of the second type of wireless communication node;

[0223] The maximum channel bandwidth of the second type of wireless communication node is less than the system bandwidth or transmission bandwidth.

[0224] And / or allow second-type wireless communication nodes to access the network or cell.

[0225] In an embodiment, PDCCHs sent at predefined, configured, or indicated PDCCH times may have the same DCI information.

[0226] In an embodiment, if the indication with indicator bits in the above SIB1 is less than 3 bits, the indication can be applied to the MIB.

[0227] Example 4:

[0228] In an embodiment, the wireless communication method further includes:

[0229] The second type of wireless communication node uses the maximum channel bandwidth or the maximum number of physical resource blocks (PRBs) to receive the first part of the PDCCH in the first defined symbol (see...). Figures 1 to 3 ) and the second part of PDCCH in the second definition symbol (see Figures 1 to 3 ).

[0230] In this embodiment, the frequency position of the second part of the PDCCH is within the frequency position of the first part of the PDCCH.

[0231] In the embodiments, the bandwidth of the first part and the second part of the PDCCH does not exceed the maximum channel bandwidth of the second type of wireless communication node, or the number of PRBs of the first part and the second part of the PDCCH does not exceed the maximum number of PRBs of the second type of wireless communication node.

[0232] In the embodiment, the third part of the PDCCH is defined in the first definition symbol (see...). Figures 1 to 3 The frequency domain resource allocation FDRA for the first and third parts of the PDCCH is indicated via MIB.

[0233] In an embodiment, the third part of the PDCCH is defined in the first definition symbol, and the frequency position of the third part of the PDCCH is different from the frequency position of the second part of the PDCCH.

[0234] In an embodiment, the frequency position of the second part of the PDCCH is M RBs of the frequency indicated by the FDRA used for the first part and the third part of the PDCCH. For example, the frequency position is the last M RBs of the frequency indicated by the FDRA, or the middle M RBs of the frequency indicated by the FDRA, where M is an integer.

[0235] In the embodiment, for CORESET#0 with 24 PRBs (Physical Resource Blocks), if the UE can receive 12 PRBs, then the following can be considered: Figure 1 The mapping configuration shown is used for UE reception.

[0236] exist Figure 1 In the first defined symbol, M RBs (resource blocks) with RB indices 0 to x1 (or x1 to N-1) can be mapped to RBs with RB indices x1+1 to N-1 (or 0 to x1-1) in the second defined symbol, where N is the total number of RBs in the PDCCH (for a 15kHz subcarrier spacing (SCS), N can be 24, 48, or 96, while for a 30kHz SCS, N can be 24 or 48).

[0237] In an embodiment, x1 may be configured or predefined as 11, 12, 24, or 25 via an SIB. Furthermore, the second definition symbol may be configured or indicated via an SIB or MIB, or may be predefined. For example, the second definition symbol is a consecutive symbol with the same number following the first definition symbol, where the first definition symbol is a PDCCH symbol defined via MIB pdcch-ConfigSIB1.

[0238] In this embodiment, for a PDCCH with an SCS of 15kHz and 2 symbols, the UE can receive 25 RBs. If x1 = 24, the first 24 RBs are reserved, and RBs with indices 24 to 47 can be mapped to the next two symbols with RB indices 0 to 23.

[0239] In this embodiment, the UE can receive 11 RBs for a PDCCH with an SCS of 30kHz. An example mapping configuration is as follows: Figure 2 As shown. Figure 2 As shown, for a PDCCH with 24 RBs and 2 symbols, the first 11 RBs can be reserved in the first defined symbol, and the subsequent 11 RBs can be mapped to RBs with indices 0 to 10 and the second defined symbol. The reserved RBs and resources may not be sent or may be punched.

[0240] In some embodiments, the RB portion with a first defined symbol is reserved, a portion of the RB is mapped to the RB range of the reserved portion with a second defined symbol, and the reserved RB and resources are not mapped or sent, or punched.

[0241] Another example mapping configuration is as follows Figure 3 As shown. Figure 3 As explained, RBs with the highest or lowest frequencies may not be mapped or transmitted, or may be punched.

[0242] Example 5:

[0243] In this embodiment, the temporal relationship based on the mapping method can be as follows.

[0244] In an embodiment, for a 15kHz SCS CORESET#0 with 48PRB or a 30kHz CORESET#0 with 24RB, the TDRA indication may be limited to a predetermined portion (e.g., Figure 4 (with a gray background in the configuration).

[0245] In an embodiment, for a 15kHz SCS CORESET#0 with 48PRB or a 30kHz CORESET#0 with 24RB, the TDRA indication may indicate that S should be 2, 4, and not less than 6.

[0246] In an embodiment, Figure 4 The table shows the default PDSCH time-domain resource allocation (TDRA) for a normal CP (control plane). Figure 4 In the index row, the slot offset K0, the start and length indicators SLIV (e.g., the start symbol S) and the allocation length L are defined.

[0247] Example 6:

[0248] Figure 5 This diagram illustrates a wireless communication terminal 30 (e.g., a terminal node, terminal device, or second-type wireless communication node) according to embodiments of the present disclosure. The wireless communication terminal 30 may be a tag, mobile phone, laptop computer, tablet computer, e-book reader, or portable computer system, and is not limited thereto. The wireless communication terminal 30 may include a processor 300 (e.g., a microprocessor or application-specific integrated circuit (ASIC)), a storage unit 310, and a communication unit 320. The storage unit 310 may be any data storage device storing program code 312, which is accessed and executed by the processor 300. Embodiments of the stored code 312 include, but are not limited to, a Subscriber Identity Module (SIM), Read-Only Memory (ROM), Flash memory, Random Access Memory (RAM), hard disk, and optical data storage devices. The communication unit 320 may be a transceiver and is used to send and receive signals (e.g., messages or packets) based on the processing results of the processor 300. In embodiments, the communication unit 320 sends and receives signals via at least one antenna 322.

[0249] In this embodiment, the storage unit 310 and the program code 312 may be omitted, and the processor 300 may include a storage unit storing the program code.

[0250] The processor 300 can perform any of the steps in the exemplary embodiment on the wireless communication terminal 30, for example, by executing program code 312.

[0251] The communication unit 320 may be a transceiver. Alternatively or as a supplement, the communication unit 320 may be combined with a transmitting unit and a receiving unit, and configured to transmit signals to a first type of wireless communication node (e.g., a base station) and receive signals from the first type of wireless communication node, respectively.

[0252] In some embodiments, the wireless communication terminal 30 can be used to perform the operations of the UE described above. In some embodiments, the processor 300 and the communication unit 320 cooperate to perform the operations described above. For example, the processor 300 performs operations and sends or receives signals, messages and / or information through the communication unit 320.

[0253] Figure 6This diagram illustrates a wireless communication node 40 (e.g., a network device or a second type of wireless communication node) according to embodiments of the present disclosure. The wireless communication node 40 may be a user equipment (UE), satellite, base station (BS), gNB, network entity, mobility management entity (MME), serving gateway (S-GW), packet data network (PDN) gateway (P-GW), radio access network (RAN), next-generation RAN (NG-RAN), data network, core network, a communication node in the core network, or radio network controller (RNC), and is not limited thereto. Furthermore, the wireless communication node 40 may include (execute) at least one network function, such as access and mobility management function (AMF), session management function (SMF), user location function (UPF), policy control function (PCF), application function (AF), etc. The wireless communication node 40 may include a processor 400 (e.g., a microprocessor or ASIC), a storage unit 410, and a communication unit 420. The storage unit 410 may be any data storage device storing program code 412, which can be accessed and executed by the processor 400. Examples of storage unit 412 include, but are not limited to, SIM, ROM, flash memory, RAM, hard disk, and optical data storage devices. Communication unit 420 may be a transceiver and is used to send and receive signals (e.g., messages or packets) based on the processing results of processor 400. In this example, communication unit 420 sends and receives signals via at least one antenna 422.

[0254] In this embodiment, the storage unit 410 and the program code 412 may be omitted. The processor 400 may include a storage unit storing program code.

[0255] The processor 400 may implement any of the steps described in the exemplary embodiments on the wireless communication node 40, for example, via executing program code 412.

[0256] The communication unit 420 may be a transceiver. Alternatively or as a supplement, the communication unit 420 may be combined with a transmitting unit and a receiving unit, and configured to transmit and receive signals, messages or information from a wireless communication node or wireless communication terminal, respectively.

[0257] In some embodiments, the wireless communication node 40 can be used to perform the operations of the BS or gNB described above. In some embodiments, the processor 400 and the communication unit 420 cooperate to perform the operations described above. For example, the processor 400 performs operations and sends or receives signals through the communication unit 420.

[0258] While various embodiments of this disclosure have been described above, it should be understood that these embodiments are presented by way of example only and not by way of limitation. Similarly, various schematic diagrams may illustrate exemplary architectures or configurations, and these diagrams are provided to enable those skilled in the art to understand the exemplary features and functions of this disclosure. However, those skilled in the art will understand that this disclosure is not limited to the illustrated exemplary architectures or configurations, but can be implemented using various alternative architectures and configurations. Furthermore, as will be understood by those skilled in the art, one or more features of one embodiment may be combined with one or more features of another embodiment described herein. Therefore, the breadth and scope of this disclosure should not be limited to any of the exemplary embodiments described above.

[0259] Furthermore, it should be understood that any reference to elements in this document using names such as "first," "second," etc., generally does not restrict the number or order of these elements. Rather, these names may be used as a convenient means of distinguishing two or more elements or instances of elements. Therefore, referring to the first and second elements does not imply the use of only two elements, nor does it imply that the first element must precede the second element in some way.

[0260] Furthermore, those skilled in the art will understand that information and signals can be represented using any of a variety of different technologies and processes. For example, the data, instructions, commands, information, signals, bits, and symbols mentioned in the above description can be represented by voltage, current, electromagnetic waves, magnetic fields or particles, light fields or particles, or any combination thereof.

[0261] Those skilled in the art will further recognize that any of the various illustrative logic blocks, units, processors, components, circuits, methods, and functions described in connection with the aspects disclosed herein can be implemented by electronic hardware (e.g., digital implementation, analog implementation, or a combination of both), firmware, various forms of program or design code containing instructions (which may be referred to herein as “software” or “software unit” for convenience), or any combination of these techniques.

[0262] To clearly illustrate this interchangeability of hardware, firmware, and software, the above description generally focuses on the functional aspects of various illustrative components, blocks, units, circuits, and steps. Whether these functions are implemented in hardware, firmware, or software, or in a combination of these technologies, depends on the specific application and design constraints imposed on the overall system. Skilled artisans can implement the described functions in various ways for each specific application, but such implementation decisions will not deviate from the scope of this disclosure. According to various embodiments, processors, devices, components, circuits, structures, machines, units, etc., may be configured to perform one or more of the functions described herein. As used herein in connection with a particular operation or function, the terms "configured to" or "configured for" refer to processors, devices, components, circuits, structures, machines, units, etc., which are physically constructed, programmed, and / or arranged to perform the specified operation or function.

[0263] Furthermore, those skilled in the art will understand that the various illustrative logic blocks, units, devices, components, and circuits described herein can be implemented in or executed by integrated circuits (ICs), and may include general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, or any combination thereof. Logic blocks, units, and circuits may further include antennas and / or transceivers for communication with various components within a network or device. A general-purpose processor may be a microprocessor, but alternatively, the processor may be any conventional processor, controller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors combined with a DSP core, or any other suitable configuration performing the functions described herein. If implemented in software, these functions may be stored as one or more instructions or code on a computer-readable medium. Therefore, the steps of the methods or algorithms disclosed herein can be implemented as software stored on a computer-readable medium.

[0264] Computer-readable media include computer storage media and communication media, wherein communication media include any medium capable of transferring computer programs or code from one place to another. Storage media can be any available medium that is accessible to a computer. By way of example and not limitation, such computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disc storage devices, magnetic disk storage devices or other magnetic storage devices, or any other medium that can be used to store desired program code in the form of instructions or data structures and is accessible to a computer.

[0265] In this document, the term "unit" as used herein refers to software, firmware, hardware, and any combination of these elements for performing the related functions described herein. Furthermore, for ease of discussion, various units are described as discrete units; however, it will be apparent to those skilled in the art that two or more units can be combined to form a single unit that performs the related functions according to embodiments of this disclosure.

[0266] Furthermore, memory or other storage and communication components may be used in embodiments of this disclosure. It is understood that, for clarity, the above description refers to embodiments of this disclosure with reference to different functional units and processors. However, it will be apparent that any suitable allocation of functionality may be used among different functional units, processing logic elements, or domains without affecting the content of this disclosure. For example, functions described as being performed by separate processing logic elements or controllers may be performed by the same processing logic element or controller. Therefore, references to specific functional units refer only to suitable means of providing said functionality and not to strict logical or physical structures or organizations.

[0267] Various modifications to the embodiments described herein will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the scope of this disclosure. Therefore, this disclosure is not intended to be limited to the embodiments shown herein, but should be given the broadest scope consistent with the novel features and principles disclosed herein, as set forth in the following claims.

Claims

1. A wireless communication method, comprising: The second type of wireless communication node receives control information from the first type of wireless communication node at one or more occasions via a repeatedly transmitted Physical Downlink Control Channel (PDCCH); The retransmitted PDCCH can be sent at an opportune time in slot n0 associated with the same SSB index in different SSB burst sets, or the retransmitted PDCCH can be sent at an opportune time in slot n0+1 associated with the same SSB index in different SSB burst sets; or the retransmitted PDCCH can be sent at an opportune time in slots n0 and n0+1 associated with the same SSB index in different SSB burst sets.

2. The wireless communication method according to claim 1, wherein the repeatedly transmitted PDCCH includes Type0 PDCCH, Type0A PDCCH, Type0B PDCCH, Type1 PDCCH, or Type2 PDCCH.

3. The wireless communication method according to claim 1 or 2, wherein the second type of wireless communication node periodically monitors the repetitively transmitted PDCCH on one or more time slots, or the second type of wireless communication node assumes or expects that the PDCCH is periodically repetitively transmitted on the one or more time slots.

4. The wireless communication method according to claim 1 or 2, wherein the timing is predetermined or determined based on at least one of time slot n0 or time slot n0+1, said time slot n0 or said time slot n0+1 being used by the second type of wireless communication node to monitor the PDCCH within the Type0-PDCCH CSS set.

5. The wireless communication method according to claim 4, wherein the search space set for transmitting the PDCCH in at least one of time slot n0 or n0+1 is: predetermined, assumed by the second type of wireless communication node, anticipated by the second type of wireless communication node, or determined by one or more indications of at least one of System Information Block SIB or Master Information Block MIB including SIB1.

6. The wireless communication method according to claim 5, wherein the PDCCH on the time slot n0 or n0+1 is repeatedly transmitted on all search space sets based on the synchronization signal / PBCH block SSB index; Or, wherein the PDCCH is repeatedly transmitted in the first search space set or the second search space set in the time slot n0 or n0+1.

7. The wireless communication method according to claim 1 or 2, wherein the period for the repeatedly transmitted PDCCH is: predetermined, assumed by the second type of wireless communication node, anticipated by the second type of wireless communication node, or determined by one or more indications of at least one of System Information Block SIB or Main Information Block MIB including System Information Block #1 SIB1.

8. The wireless communication method of claim 7, wherein the period indicated via the MIB or the SIB is greater than or equal to the period of the SSB for the cell.

9. The wireless communication method according to claim 1 or 2, wherein the second type of wireless communication node monitors the repeatedly transmitted PDCCH at different times according to at least one of the following: One or more first indices; One or more PDCCH candidates; or One or more aggregation levels AL; One of the first indexes includes those for AL. L Control Channel Unit (CCE) index, or for the AL L At least one of the index offsets i, where i = 0, ..., L-1. One of the PDCCH candidates includes , … ,in It concerns the number of PDCCH candidates for the following: for n CI In the corresponding serving cell, the second type of wireless communication node is configured to monitor the aggregation level L for the search space set s.

10. The wireless communication method of claim 9, wherein at different times, at least one of the first index, the PDCCH candidate, or the AL for the repeated PDCCH is: predetermined, assumed by the second type of wireless communication node, anticipated by the second type of wireless communication node, or determined by one or more indications of at least one of SIB or MIB.

11. The wireless communication method according to claim 9, For one or more ALs, the second type of wireless communication node uses the same index in the first index and the same PDCCH candidate in the PDCCH candidate at different times to monitor the repeatedly transmitted PDCCH, or For one or more ALs, the second type of wireless communication node uses multiple identical indices in the first index and multiple identical candidates in the PDCCH candidates at different times to monitor the repeatedly transmitted PDCCH, or For one or more ALs, the second type of wireless communication node monitors the repeatedly transmitted PDCCH based on the one or more PDCCH candidates at different times; or For one or more ALs, the second type of wireless communication node monitors the repeatedly transmitted PDCCH at different times based on one or more of the same indices in the first index.

12. The wireless communication method of claim 9, wherein, for the one or more ALs, the second type of wireless communication node uses different indices in the first index or different PDCCH candidates in the PDCCH candidates at different times to monitor the repeatedly transmitted PDCCH.

13. The wireless communication method according to claim 1 or 2, wherein the repeated transmission of PDCCH or the timing of PDCCH is defined in a time window, wherein the length of the time window is: predetermined, assumed by the second type of wireless communication node, anticipated by the second type of wireless communication node, or determined by one or more indications of at least one of SIB or MIB.

14. The wireless communication method according to claim 13, wherein the length of the time window includes at least one of the following: Time period; Time period based on timer; Based on the SSB period or a time period of 20 milliseconds; The time period is based on the system frame number (SFN). Based on time periods measured in microseconds, milliseconds, or seconds; or The number of times the PDCCH is repeatedly transmitted; And the length of the time window is based on one or more indications in the fields of the MIB.

15. The wireless communication method according to claim 1 or 2, wherein the aggregation level of the search space set for the repeatedly transmitted PDCCH is: predetermined, assumed by the second type of wireless communication node, anticipated by the second type of wireless communication node, or determined by one or more indications of at least one of SIB or MIB.

16. The wireless communication method according to claim 1 or 2, wherein the PDCCH is assumed, expected, configured, instructed, or predetermined to be transmitted every X units of time, wherein X units of time are based on half-frame, time period, SSB period, time slot, millisecond, microsecond, second, or SFN, and X is an integer.

17. The wireless communication method according to claim 1 or 2, wherein the indication for activating or deactivating the monitoring or decoding of the repeatedly transmitted PDCCH is determined by one or more indications of at least one of SIB or MIB.

18. The wireless communication method according to claim 1 or 2, wherein the indication for activating or deactivating the monitoring or decoding of the repeatedly transmitted PDCCH is determined by at least one of the following conditions: The bandwidth of CORESET#0 is greater than the maximum channel bandwidth of the second type of wireless communication node; The maximum channel bandwidth of the second type of wireless communication node is less than the system bandwidth or transmission bandwidth; And allow the second type of wireless communication node to access the network or cell.

19. The wireless communication method according to claim 1 or 2, further comprising: The second type of wireless communication node uses the maximum channel bandwidth or the maximum number of physical resource blocks (PRBs) to receive the first part of the PDCCH in the first definition symbol and the second part of the PDCCH in the second definition symbol. The frequency position of the second portion of the PDCCH is within the frequency position of the first portion of the PDCCH; and Wherein the bandwidth of the first part of the PDCCH and the second part of the PDCCH does not exceed the maximum channel bandwidth of the second type of wireless communication node, or the number of PRBs of the first part of the PDCCH and the second part of the PDCCH does not exceed the maximum number of PRBs of the second type of wireless communication node.

20. The wireless communication method of claim 19, wherein the third portion of the PDCCH is defined in the first definition symbol, and the frequency domain resource allocation (FDRA) of the first portion of the PDCCH and the third portion of the PDCCH is indicated via MIB.

21. The wireless communication method of claim 19, wherein the third part of the PDCCH is defined in the first definition symbol, and the frequency position of the third part of the PDCCH is different from the frequency position of the second part of the PDCCH.

22. The wireless communication method according to claim 20 or 21, wherein the frequency position of the second portion of the PDCCH is M RBs of the frequencies indicated by the FDRA for the first portion of the PDCCH and the third portion of the PDCCH, wherein preferably, the frequency position is the last M RBs of the frequencies indicated by the FDRA, or the middle M RBs of the frequencies indicated by the FDRA, where M is an integer.

23. The wireless communication method according to claim 1 or 2, wherein the Time Domain Resource Allocation (TDRA) indication in the downlink control information (DCI) carried in the PDCCH indicates that the start symbol of the repeatedly transmitted PDCCH is 2, 4, or an integer not less than 6.

24. A wireless communication method, comprising: Control information is transmitted from a first-type wireless communication node to a second-type wireless communication node via a repeatedly transmitted physical downlink control channel (PDCCH) at one or more occasions. The retransmitted PDCCH can be sent at an opportune time in slot n0 associated with the same SSB index in different SSB burst sets, or the retransmitted PDCCH can be sent at an opportune time in slot n0+1 associated with the same SSB index in different SSB burst sets; or the retransmitted PDCCH can be sent at an opportune time in slots n0 and n0+1 associated with the same SSB index in different SSB burst sets.

25. The wireless communication method of claim 24, wherein the repeatedly transmitted PDCCH includes Type0 PDCCH, Type0A PDCCH, Type0B PDCCH, Type1 PDCCH, or Type2 PDCCH.

26. The wireless communication method according to claim 24 or 25, wherein the first type of wireless communication node periodically transmits the control information via the repeatedly transmitted PDCCH in one or more time slots.

27. The wireless communication method according to claim 24 or 25, wherein the timing is predetermined or determined based on at least one of time slot n0 or time slot n0+1, said time slot n0 or time slot n0+1 being used by the first type of wireless communication node to transmit the control information via said PDCCH within the Type0-PDCCH CSS set.

28. The wireless communication method of claim 27, wherein the search space set for transmitting the PDCCH in at least one of time slot n0 or n0+1 is: predetermined, or determined by one or more indications of at least one of System Information Block SIB or Main Information Block MIB including SIB1.

29. The wireless communication method of claim 28, wherein the PDCCH on the time slot n0 or n0+1 is repeatedly transmitted on all search space sets based on the synchronization signal / PBCH block SSB index; Or, wherein the PDCCH is repeatedly transmitted in the first search space set or the second search space set in the time slot n0 or n0+1.

30. The wireless communication method according to claim 24 or 25, wherein the period for the repeated transmission of the PDCCH is: predetermined, or determined by one or more indications of at least one of System Information Block SIB or Main Information Block MIB, including System Information Block #1 SIB1.

31. The wireless communication method of claim 30, wherein the period indicated via the MIB or the SIB is greater than or equal to the period of the SSB for the cell.

32. The wireless communication method according to claim 24 or 25, wherein the first type of wireless communication node transmits the control information via the repeatedly transmitted PDCCH at different times according to at least one of the following: One or more first indices; One or more PDCCH candidates; or One or more aggregation levels AL; One of the first indexes includes those for AL. L Control Channel Unit (CCE) index, or for the AL L At least one of the index offsets i, where i = 0, ..., L-1. One of the PDCCH candidates includes , … ,in It concerns the number of PDCCH candidates for the following: for n CI In the corresponding serving cell, the first type of wireless communication node is configured to transmit the control information for searching the aggregation level L of the spatial set s.

33. The wireless communication method of claim 32, wherein at different times, at least one of the first index, the PDCCH candidate, or the AL for the repeated PDCCH is: predetermined or determined by one or more indications of at least one of the SIB or MIB.

34. The wireless communication method according to claim 32, For one or more ALs, the first type of wireless communication node transmits the control information via the repeatedly transmitted PDCCH at different times using the same index in the first index and the same PDCCH candidate in the PDCCH candidate, or For one or more ALs, the first type of wireless communication node uses multiple identical indices in the first index and multiple identical candidates in the PDCCH candidates at different times to transmit the control information via the repeatedly transmitted PDCCH, or For one or more ALs, the first type of wireless communication node transmits the control information via the repeatedly transmitted PDCCH based on the one or more PDCCH candidates at different times; or For one or more ALs, the first type of wireless communication node transmits the control information via the repeatedly transmitted PDCCH at different times, based on one or more of the same indexes in the first index.

35. The wireless communication method of claim 32, wherein, for the one or more ALs, the first type of wireless communication node transmits the control information via the repeatedly transmitted PDCCH at different times using different indices in the first index or different PDCCH candidates in the PDCCH candidates.

36. The wireless communication method according to claim 24 or 25, wherein the repeated transmission of PDCCH or the timing of PDCCH is defined in a time window, wherein the length of the time window is: predetermined, or determined by one or more indications of at least one of SIB or MIB.

37. The wireless communication method according to claim 36, wherein the length of the time window includes at least one of the following: Time period; Time period based on timer; Based on the SSB period or a time period of 20 milliseconds; The time period is based on the system frame number (SFN). Based on time periods measured in microseconds, milliseconds, or seconds; or The number of times one or more of the PDCCHs are transmitted repeatedly; And the length of the time window is based on one or more indications in the fields of the MIB.

38. The wireless communication method according to claim 24 or 25, wherein the aggregation level of the search space set for the repeatedly transmitted PDCCH is: predetermined, or determined by one or more indications of at least one of SIB or MIB.

39. The wireless communication method according to claim 24 or 25, further comprising: The first type of wireless communication node transmits the first part of the PDCCH in the first definition symbol and the second part of the PDCCH in the second definition symbol to the second type of wireless communication node, using the maximum channel bandwidth or the maximum number of physical resource blocks (PRBs); The frequency position of the second portion of the PDCCH is within the frequency position of the first portion of the PDCCH; and Wherein the bandwidth of the first part of the PDCCH and the second part of the PDCCH does not exceed the maximum channel bandwidth of the second type of wireless communication node, or the number of PRBs of the first part of the PDCCH and the second part of the PDCCH does not exceed the maximum number of PRBs of the second type of wireless communication node.

40. A wireless communication node, comprising: Communication unit; as well as The processor is configured to receive control information from a first-type wireless communication node at one or more times via a repeatedly transmitted physical downlink control channel (PDCCH). The retransmitted PDCCH can be sent at an opportune time in slot n0 associated with the same SSB index in different SSB burst sets, or the retransmitted PDCCH can be sent at an opportune time in slot n0+1 associated with the same SSB index in different SSB burst sets; or the retransmitted PDCCH can be sent at an opportune time in slots n0 and n0+1 associated with the same SSB index in different SSB burst sets.

41. The wireless communication node of claim 40, wherein the processor is further configured to perform the wireless communication method of any one of claims 2 to 23.

42. A wireless communication terminal, comprising: Communication unit; as well as The processor is configured to transmit control information to a second-type wireless communication node via a repeatedly transmitted physical downlink control channel (PDCCH) at one or more occasions. The retransmitted PDCCH can be sent at an opportune time in slot n0 associated with the same SSB index in different SSB burst sets, or the retransmitted PDCCH can be sent at an opportune time in slot n0+1 associated with the same SSB index in different SSB burst sets; or the retransmitted PDCCH can be sent at an opportune time in slots n0 and n0+1 associated with the same SSB index in different SSB burst sets.

43. The wireless communication terminal according to claim 42, wherein the processor is further configured to perform the wireless communication method according to any one of claims 25 to 39.

44. A computer program product comprising computer-readable program medium code stored thereon, the code, when executed by a processor, causing the processor to implement the wireless communication method according to any one of claims 1 to 39.

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