Method and apparatus for wireless communication

Abstract

A wireless communication method for use in a wireless terminal is disclosed. The method includes receiving, from a wireless network node, configuration information of connected mode discontinuous reception (C-DRX), the configuration information indicating non-integer periodicity, and performing C-DRX based on the non-integer periodicity.

Description

Technical Field

[0001] This document generally relates to wireless communication, particularly to the configuration of 5G wireless communication, particularly discontinuous reception (DRX).

Background Art

[0002] Since XR (extended reality) services are typically quasi-periodic services with burst arrival time jitter, C-DRX (connected mode DRX) can be used to match the burst arrival pattern of XR services and save power of the UE (user equipment). That is, the UE monitors the PDCCH (physical downlink control channel) to transmit and / or receive XR data during the active period of C-DRX (e.g., when the on-duration timer is running), and stops monitoring the PDCCH to save power during the inactive period of C-DRX. There may be several aspects that need to be considered to apply C-DRX for XR services.

[0003] This document relates to a method, system, and apparatus for configuring C-DRX, particularly to a method, system, and apparatus for C-DRX with a burst transmission pattern.

Summary of the Invention

Means for Solving the Problems

[0004] This disclosure relates to a wireless communication method for use in a wireless terminal. The method includes receiving, from a wireless network node, configuration information of connected mode discontinuous reception (C-DRX), where the configuration information indicates non-integer periodicity, performing C-DRX based on the non-integer periodicity, and including.

[0005] Various embodiments may preferably implement the following features: Preferably, the configuration information indicates fractional periodicity by indicating a fractional value of the fractional periodicity.

[0006] Preferably, the configuration information indicates fractional periodicity by indicating a fractional value of the fractional periodicity. Preferably, the configuration information indicates fractional periodicity by indicating a numerator and a denominator.

[0007] Preferably, the configuration information indicates non-integer periodicity by indicating a data burst frequency (e.g., in units of fps (frame per second) or Hz), and the non-integer periodicity = 1000 ms / data burst frequency.

[0008] Preferably, implementing C-DRX based on non-integer periodicity includes, for example, determining a C-DRX on-duration start opportunity based on the non-integer periodicity.

[0009] Preferably, the C-DRX on-duration start opportunity is determined based on the following,

[0010]

Number

[0011] Preferably, the C-DRX on-duration start opportunity is determined based on the following,

[0012]

Number

[0013] Preferably, the C-DRX on-duration start opportunity is determined based on the following,

[0014]

Number

[0015] Preferably, the C-DRX on-duration start opportunity is determined based on the following,

[0016] [Number]

[0017] Preferably, the C-DRX on-duration start opportunity is determined based on the following,

[0018] [Number]

[0019] Preferably, the C-DRX on-duration start opportunity is determined based on the following,

[0020] [Number]

[0021] Preferably, the C-DRX on-duration start opportunity is determined based on the following,

[0022] [Number]

[0023] Preferably, the configuration information includes indication information associated with determining the first C-DRX on-duration start opportunity.

[0024] Preferably, the indication information includes the least significant bit of the hyper system frame number associated with the first transmission of radio resource control signaling including the configuration information.

[0025] Preferably, the indication information includes a reference system frame number and a time domain offset, and the first C-DRX on-duration start opportunity starts at a time domain location that is the time domain offset before or after the reference system frame number.

[0026] Preferably, the indication information includes a reference system frame number indicating the closest system frame number preceding or following the first C-DRX on-duration start opportunity, and a start offset indicating the time domain location of the first C-DRX on-duration start opportunity based on the closest system frame number.

[0027] The present disclosure relates to a wireless communication method for use in a wireless network node. The method includes transmitting, to a wireless terminal, configuration information for connected mode discontinuous reception (C-DRX), the configuration information indicating non-integer periodicity, transmitting, to the wireless terminal, data based on C-DRX having non-integer periodicity and

[0028] Various embodiments may preferably implement the following features: Preferably, the configuration information indicates fractional periodicity by indicating a fractional value of the fractional periodicity.

[0029] Preferably, the configuration information indicates fractional periodicity by indicating a fractional value of the fractional periodicity. Preferably, the configuration information indicates fractional periodicity by indicating a numerator and a denominator.

[0030] Preferably, the configuration information indicates non-integer periodicity by indicating a data burst frequency (e.g., in units of fps or Hz), and the non-integer periodicity = 1000 ms / data burst frequency.

[0031] Preferably, transmitting data based on C-DRX having a non-integer periodicity to a wireless terminal includes, for example, determining a C-DRX on-duration start opportunity based on the non-integer periodicity.

[0032] Preferably, the C-DRX on-duration start opportunity is determined based on the following,

[0033]

Number

[0034] Preferably, the C-DRX on-duration start opportunity is determined based on the following,

[0035]

Number

[0036] Preferably, the C-DRX on-duration start opportunity is determined based on the following,

[0037]

Number

[0038] Preferably, the C-DRX on-duration start opportunity is determined based on the following,

[0039]

Number

[0040] Preferably, the C-DRX on-duration start opportunity is determined based on the following,

[0041]

Number

[0042] Preferably, the C-DRX on-duration start opportunity is determined based on the following,

[0043]

Number

[0044] Preferably, the C-DRX on-duration start opportunity is determined based on the following,

[0045]

Number

[0046] Preferably, the configuration information includes indication information associated with determining a first C-DRX on-duration start opportunity.

[0047] Preferably, the indication information includes the least significant bit of the hyper system frame number associated with the first transmission of radio resource control signaling including the configuration information.

[0048] Preferably, the indication information includes a reference system frame number and a time domain offset, and the first C-DRX on-duration start opportunity starts at a time domain location that is the time domain offset before or after the reference system frame number.

[0049] Preferably, the indication information includes a reference system frame number indicating the closest system frame number preceding or following the first C-DRX on-duration start opportunity, and a start offset indicating the time domain location of the first C-DRX on-duration start opportunity based on the closest system frame number.

[0050] The present disclosure relates to a wireless communication method for use in a wireless network node. The method includes transmitting configuration information of connected mode discontinuous reception (C-DRX) to a wireless terminal, the configuration information indicating non-integer periodicity, transmitting data based on C-DRX having non-integer periodicity to the wireless terminal including

[0051] This disclosure relates to a wireless communication method for use in a wireless terminal. The method includes determining, for a plurality of configured grant (CG) resource opportunities within a period, at least one hybrid automatic repeat request (HARQ) process identifier from a HARQ process ID range.

[0052] Various embodiments may preferably implement the following features: Preferably, the HARQ process ID is determined for each CG resource opportunity.

[0053] Preferably, the wireless communication method further includes transmitting, to a wireless network node, an indication of the determined at least one HARQ process ID together with an uplink transmission via a CG resource opportunity.

[0054] Preferably, the HARQ process ID is determined for each period. Preferably, the HARQ process ID is determined by

[0055]

Number

[0056] Preferably, the HARQ process ID is determined for each transmission via a CG resource opportunity. Preferably, the HARQ process ID is determined by

[0057]

Number

[0058] Preferably, the HARQ process ID of the first configured grant (CG) opportunity among the multiple CG opportunities is determined based on the sequence number of the first CG opportunity.

[0059] Preferably, the HARQ process ID is determined as follows:

[0060]

Number

[0061] Preferably, the period is a CG opportunity period or a connected mode discontinuous reception period. The present disclosure relates to a wireless communication method for use in a wireless network node. The method includes determining at least one hybrid automatic repeat request (HARQ) process identifier (ID) from a HARQ process ID range for a plurality of configured grant (CG) resource opportunities within a certain period.

[0062] Various embodiments may preferably implement the following features: Preferably, the HARQ process ID is determined for each CG resource opportunity.

[0063] Preferably, the wireless communication method further includes receiving, from a wireless terminal, an indication of at least one HARQ process ID together with an uplink transmission via a CG resource opportunity, and the at least one HARQ process ID is determined based on the indication.

[0064] Preferably, the HARQ process ID is determined for each period. Preferably, the HARQ process ID is determined as follows:

[0065]

Number

[0066] Preferably, the HARQ process ID is determined for each transmission via a CG resource opportunity. Preferably, the HARQ process ID is determined by

[0067]

Number

[0068] Preferably, the HARQ process ID of the first CG opportunity among a plurality of CG opportunities is determined based on the sequence number of the first CG opportunity.

[0069] Preferably, the HARQ process ID is determined by

[0070]

Number

[0071] Preferably, the period is a CG opportunity period or a connected mode discontinuous reception period. The present disclosure relates to a wireless terminal. The wireless terminal is a communication unit configured to receive configuration information of connected mode discontinuous reception (C-DRX) from a wireless network node, the configuration information indicating non-integer periodicity, and a processor configured to perform C-DRX based on the non-integer periodicity and includes.

[0072] Various embodiments may preferably implement the following features: Preferably, the processor is further configured to implement any of the aforementioned wireless communication methods.

[0073] The present disclosure relates to a wireless network node. The wireless network node includes a communication unit, and the communication unit Transmit configuration information of connected mode discontinuous reception (C-DRX) to a wireless terminal, where the configuration information indicates non-integer periodicity, and transmit data based on C-DRX with non-integer periodicity to the wireless terminal configured as such.

[0074] Various embodiments may preferably implement the following features: Preferably, the wireless network node further comprises a processor configured to implement any of the aforementioned wireless communication methods.

[0075] The present disclosure relates to a wireless terminal. The wireless terminal comprises a processor configured to determine at least one hybrid automatic repeat request (HARQ) process identifier (ID) from a HARQ process ID range for a plurality of configured grant (CG) resource opportunities within a certain period.

[0076] Various embodiments may preferably implement the following features: Preferably, the processor is further configured to implement any of the aforementioned wireless communication methods.

[0077] The present disclosure relates to a wireless network node. The wireless network node comprises a processor configured to determine at least one hybrid automatic repeat request (HARQ) process identifier (ID) from a HARQ process ID range for a plurality of configured grant (CG) resource opportunities within a certain period.

[0078] Various embodiments may preferably implement the following features: Preferably, the processor is further configured to implement any of the aforementioned wireless communication methods.

[0079] The present disclosure relates to a computer program product including computer-readable program media code stored thereon, which when executed by a processor causes the processor to implement the wireless communication method described in any one of the foregoing methods.

[0080] The exemplary embodiments disclosed herein are directed to providing features that will be readily apparent by reference to the following description when taken in conjunction with the accompanying drawings. According to various embodiments, exemplary systems, methods, apparatuses, and computer program products are disclosed herein. However, it is understood that these embodiments are presented by way of example and not limitation, and it will be apparent to those skilled in the art having read this disclosure that various modifications to the disclosed embodiments can be made within the scope of the present disclosure.

[0081] Accordingly, the present disclosure is not limited to the exemplary embodiments and applications described and illustrated herein. Further, the specific order and / or hierarchy of steps in the methods disclosed herein are merely exemplary approaches. Based on design preferences, the specific order or hierarchy of steps in the disclosed methods or processes can be rearranged while remaining within the scope of the present disclosure. Thus, those skilled in the art will understand that the methods and techniques disclosed herein present various steps or operations in a sample order, and the present disclosure is not limited to the specific order or hierarchy presented unless otherwise specified.

[0082] The present invention is defined by the independent claims. Preferred embodiments are defined by the dependent claims. In the following description, numerous features may be specified as optional, but nevertheless it is recognized that not all features included in the independent claims should be construed as optional.

[0083] The above and other aspects and their embodiments are described in more detail in the drawings, the description, and the claims.

Brief Description of the Drawings

[0084]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Embodiments for Carrying Out the Invention

[0085] In one embodiment, the frame rate of the XR service (e.g., 15 fps (frames per second), 30 fps, 45 fps, 60 fps, 72 fps, 90 fps, 120 fps) corresponds to a periodicity of (66.66 ms (microseconds), 33.33 ms, 22.22 ms, 16.66 ms, 13.88 ms, 11.11 ms, and 8.33 ms), respectively, which are not multiples of the C-DRX periodicity (e.g., the C-DRX periodicity may be composed in ms units) and not integer factors of 1024 ms. Under such conditions, due to the problem of periodicity mismatch and SFN (system frame number) wraparound, there is a mismatch between the XR service periodicity and the DRX cycle. FIG. 1 shows a schematic diagram of the mismatch between the XR traffic arrival time and the DRX cycle after SFN wraparound according to an embodiment of the present disclosure. As shown in FIG. 1, the mismatch between the XR service periodicity and the DRX cycle can cause the DRX cycle to deviate from the synchronization with the arrival time of the XR traffic after SFN wraparound.

[0086] The present disclosure provides a method for C-DRX applied to XR services and their devices. It should be noted that the method disclosed in the present disclosure can be applied to a configured scheduling mechanism for uplink (e.g., CG (configured grant)) and / or downlink (e.g., SPS (semi-persistent scheduling)). In addition, the C-DRX in the present disclosure is not limited to XR services and can also be applied to other types of services.

[0087] C-DRX Periodicity Configuration In one embodiment, XR frame rates (e.g., 15fps, 30fps, 45fps, 60fps, 72fps, 90fps, and 120fps) correspond to periodicities of (e.g., 200 / 3ms, 100 / 3ms, 200 / 9ms, 50 / 3ms, 125 / 9ms, 100 / 9ms, 3 / 25ms) respectively. To align the CDRX periodicity with the XR frame rate, for example, XR frame rates such as 15, 30, 45, 60, 72, 90, and 120fps (e.g., data burst frequencies) are configured for the UE, and the UE calculates the C-DRX periodicity or CG / SPS periodicity using the formula 1000ms / XR frame rate (e.g., the XR frame rate may be the data burst frequency), or a non-integer periodicity (e.g., fractional periodicity) is configured as the C-DRX periodicity.

[0088] In one embodiment, the fractional periodicity can be presented by enumerating fractional values. For example, the fractional periodicity can be presented by enumerating fractional values as the following pseudocode.

[0089] Periodicity ENUMERATED{3per200ms,3per100ms,9per200ms,3per50ms,9per125ms,9per100ms,3per25ms} Note that 3per200ms indicates a periodicity of 200 / 3ms, 3per100ms indicates a periodicity of 100 / 3ms, and so on.

[0090] Alternatively, or in addition, the fractional periodicity is presented by the numerator and denominator (indicating it). For example, the fractional periodicity may be presented by the numerator and denominator as the following pseudocode.

[0091] Periodicity::=SEQUENCE { numerator ENUMERATED {25,50,100,125,200} denominator ENUMERATED {3,9}, } In this embodiment, the periodicity is expressed as (numerator / denominator) ms.

[0092] In one embodiment, the non-integer (e.g., fractional) periodicity configuration method for C-DRX can also be used to configure the non-integer (e.g., fractional) periodicity of CG and / or SPS.

[0093] SFN and subframe of the C-DRX on-duration start opportunity In some embodiments, the C-DRX on-duration start opportunity is determined based on XR (incompleteness) periodicity, eliminating the inconsistency between the CDRX periodicity and the XR incompleteness periodicity and avoiding the SFN wrap-around problem.

[0094] In one embodiment, the SFN and subframe number of the C-DRX on-duration start opportunity can be determined as follows.

[0095]

Number

[0096] In one embodiment, the SFN and subframe number / index of the C-DRX on-duration start opportunity can be determined as follows.

[0097]

Number

[0098] In one embodiment, the SFN and subframe number of the C-DRX on-duration start opportunity can be determined as follows.

[0099]

Number

[0100] Here, when C-DRX is activated, m = 0, incremented every time SFN = 0, where SFN is the SFN of the C-DRX on-duration start opportunity, subframe_number is the subframe number of the C-DRX on-duration start opportunity, drx-StartOffset is explicitly indicated when C-DRX is activated and is used to determine the SFN and subframe of the C-DRX on-duration start opportunity, and drx-periodicity is the (non-integer or fractional) periodicity of C-DRX.

[0101] In one embodiment, the SFN and slot number of the C-DRX on-duration start opportunity can be determined as follows.

[0102]

Number

[0103] In one embodiment, the SFN, slot number, and symbol number of the C-DRX on-duration start opportunity can be determined as follows.

[0104]

Number

[0105] In one embodiment, the SFN and subframe number of the C-DRX on-duration start opportunity can be determined as follows.

[0106]

Number

[0107] In one embodiment, the SFN and subframe number of the C-DRX on-duration start opportunity can be determined as follows.

[0108]

Number

[0109] In the present disclosure, floor(X) is a function that determines / obtains / calculates the largest integer less than or equal to X. When the C-DRX periodicity value is configured as an integer, floor() may be removed from each of the expressions in Expressions 2-1 to 2-5.

[0110] In the present disclosure, ceil(X) is a function that determines / obtains / calculates the smallest integer greater than or equal to X. When the C-DRX periodicity value is configured as an integer, ceil() may be removed from each of the expressions / equations in Expression 2-6 or Expression 2-7.

[0111] In one embodiment, the above expressions / equations for determining the time domain position (e.g., SFN, subframe number, symbol number, slot number) of the C-DRX on-duration start opportunity may be used to determine the resource opportunities for CG and / or SPS.

[0112] Determination of the First (1st) DRX On-Duration Start Opportunity When determining the C-DRX on-duration start opportunity, the UE may need to determine the time domain position of the first opportunity when C-DRX is activated / reconfigured, or the first (1st) C-DRX duration start opportunity (e.g., SFN start time and subframe start time ). For example, determining the opportunity where m = 0 or N = 0 in the expressions / equations of Expressions 2-1 to 2-5 and Expression 2-7).

[0113] In some embodiments, C-DRX is (re)configured or activated by dedicated RRC (radio resource control) signaling, and the dedicated RRC signaling may be retransmitted. Upon receiving the dedicated RRC signaling, the UE determines the opportunity when C-DRX is activated or the time domain position of the first (1st) C-DRX on-duration start opportunity (e.g., SFN start time , and / or slot start time and / or symbol start timeIt is difficult to determine [[ID=]]. For example, at the H-SFN (hyper SFN) boundary (e.g., SFN = 1023 or SFN = 0), the UE may have difficulty determining which H-SFN the dedicated RRC signaling is first transmitted on.

[0114] In one embodiment, a 1-bit hsfn-LSB-Info is configured for the UE to indicate the LSB (least significant bit) of the H-SFN corresponding to the SFN of the first transmission of the dedicated RRC signaling including C-DRX (re)configuration and / or activation.

[0115] Alternatively, or in addition, the SFN of the first (initial) on-duration start opportunity start time , and / or subframe start time and / or slot start time and / or symbol start time is explicitly configured to indicate the start SFN, and / or start subframe, and / or start slot and / or start symbol of the first C-DRX on-duration start opportunity.

[0116] In this embodiment, the (re)transmission of the dedicated RRC signaling including C-DRX (re)configuration (information) may not be costly beyond 1024 ms.

[0117] In one embodiment, timeReferenceSFN is configured to indicate the closest SFN before or after the reception of dedicated RRC signaling including C-DRX (re)configuration, or to indicate the closest SFN before or after the first (first) transmission of dedicated RRC signaling including C-DRX (re)configuration and / or activation. timeReferenceSFN is used to determine the H-SFN of the first on-duration start time of C-DRX (for example, the start time of the first C-DRX on-duration start opportunity), or the closest SFN before or after the first C-DRX on-duration start opportunity (for example, when m = 0 in the equations of Formula 2-1 to Formula 2-5, or when N = 0 in the equations of Formula 2-6 and Formula 2-7).

[0118] In one embodiment, timeDomainOffset and timeReferenceSFN are configured to indicate the first C-DRX on-duration start opportunity, where -timeReferenceSFN indicates the reference SFN used to determine the start time of the first C-DRX on-duration start opportunity.

[0119] -timeDomainOffset indicates the offset between the reference SFN and the first C-DRX on-duration start opportunity.

[0120] For example, the first on-duration of the first C_DRX starts at the following SFN and subframe opportunities.

[0121] -The result of subtracting timeDomainOffset from the closest timeReferenceSFN boundary (for example, SFN start or end opportunity) before or after the reception of C-DRX configuration (including RRC signaling), or -The result of adding timeDomainOffset to the closest timeReferenceSFN boundary (for example, SFN start or end opportunity) after the reception of C-DRX configuration (including RRC signaling).

[0122] In one embodiment, dedicated RRC signaling (re)transmission does not incur a cost exceeding the value step of timeReferenceSFN.

[0123] Embodiments that configure timeDomainOffset and timeReferenceSFN to indicate the first C-DRX on-duration start opportunity may be applicable to Equation 2-2 and Equation 2-6.

[0124] In one embodiment, drx-Periodicity, drx-StartOffset, and timeReferenceSFN are configured to indicate the first C-DRX on-duration start opportunity, where - timeReferenceSFN indicates the reference SFN used to determine the H-SFN of the first on-duration start time of C_DRX or the nearest SFN before or after the first C-DRX on-duration start opportunity (e.g., m = 0 in the equation of Equation 2-3), - drxOffset and drxPeriodicity are used to determine the SFN and subframe of the C_DRX on-duration start time (see, e.g., Equation 2-3).

[0125] In one embodiment, dedicated RRC signaling (re)transmission does not incur a cost exceeding the value step of timeReferenceSFN.

[0126] Determination of CG HARQ Process Number In some embodiments, for UL burst transmissions with a large burst size or UL burst transmissions with burst arrival time jitter, multiple CG opportunities within one CG period may be configured. For example, each CG periodicity shown in FIG. 2 includes five CG opportunities. Note that the CG periodicity may be the C-DRX periodicity.

[0127] In one embodiment, a CG opportunity is called a CG resource opportunity. When there are multiple CG opportunities within one CG period, the HARQ process ID can be determined according to one of the following embodiments.

[0128] In one embodiment, a HARQ process ID range is configured for CG. The UE selects a HARQ process ID from the HARQ process ID range for the CG opportunity and indicates the selected HARQ process ID to the gNB (e.g., BS) along with UL transmission via this CG resource opportunity (e.g., via CG-UCI (CG UL control information) or subCG-UCI). In this embodiment, the UE can autonomously perform retransmission for a specific HARQ process using available UL resources (e.g., CG resources scheduled by the gNB or UL grants). When there is no UL data transmission in the CG opportunity, the UE transmits an indication to the gNB that there is no UL data transmission in the CG opportunity so that the gNB can distinguish between the case of UL transmission failure and the case of no UL data transmission. When there is no UL information received in the CG opportunity, the gNB may assume that a UL transmission failure has occurred and schedule a UL grant without a HARQ process ID assigned for UL retransmission.

[0129] In one embodiment, a HARQ process ID range is configured for CG. The HARQ process ID is determined for each CG period (e.g., multiple CG opportunities within one CG period share the same HARQ process ID). For example, the HARQ process ID may be determined as follows.

[0130]

Number

[0131] In one embodiment, a HARQ process ID range is configured for CG. The HARQ process ID is determined for each CG opportunity during the CG period (or during the C-DRX period). For example, the HARQ process ID may be determined as follows.

[0132]

Number

[0133] In one embodiment, the HARQ process ID of the CG opportunity is determined based on the sequence number of the CG opportunity. For example, the HARQ process ID of the CG opportunity may be determined as follows.

[0134]

Number

[0135] In this embodiment, harq-ProcID-Offset is the starting HARQ process ID that can be used by the CG, and nrofHARQ-Processes is the total number of HARQ process IDs that can be used by the CG. That is, the range of HARQ process IDs available in the CG is [harq-procID-offset,...,(harq-procID-offset + nrofHARQ-Processes - 1)]. Also, CG_occasion_SequenceNumber is the sequence number of the CG opportunity (e.g., one UL grant) during the CG periodicity (or during the C-DRX periodicity). For example, the CG_occasion_SequenceNumber for each CG in one CG periodicity may be configured as the CGO SN shown in FIG. 4. Specifically, in FIG. 4, the sequence number of the first CG opportunity is 0, the sequence number of the second CG opportunity is 1, and so on.

[0136] FIG. 5 relates to a schematic diagram of a wireless terminal 50 according to an embodiment of the present disclosure. The wireless terminal 50 may be a user equipment (UE), a mobile phone, a laptop, a tablet computer, an e-book, or a portable computer system, and is not limited herein. The wireless terminal 50 may include a processor 500 such as a microprocessor or an application specific integrated circuit (ASIC), a storage unit 510, and a communication unit 520. The storage unit 510 may be any data storage device that stores program code 512 accessed and executed by the processor 500. Embodiments of the storage unit 510 include, but are not limited to, a subscriber identity module (SIM), a read-only memory (ROM), a flash memory, a random access memory (RAM), a hard disk, and an optical data storage device. The communication unit 520 may be a transceiver and is used to transmit and receive signals (e.g., messages or packets) according to the processing results of the processor 500. In one embodiment, the communication unit 520 transmits and receives signals via at least one antenna 522 shown in FIG. 5.

[0137] In one embodiment, the storage unit 510 and the program code 512 may be omitted, and the processor 500 may include a storage unit having stored program code.

[0138] The processor 500 may implement any one of the steps in the illustrated embodiment on the wireless terminal 50, for example, by executing the program code 512.

[0139] The communication unit 520 may be a transceiver. Alternatively, or in addition thereto, the communication unit 520 may combine a transmission unit and a reception unit configured to transmit and receive signals to and from a wireless network node (e.g., a base station), respectively.

[0140] FIG. 6 relates to a schematic diagram of a wireless network node 60 according to an embodiment of the present disclosure. The wireless network node 60 may be a satellite, a base station (BS), a network entity, a mobility management entity (MME), a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), a radio access network (RAN) node, a next-generation RAN (NG-RAN) node, a gNB, an eNB, a gNB central unit (gNB-CU), a gNB distributed unit (gNB-DU), a data network, a core network, or a radio network controller (RNC), and is not limited herein. Further, the wireless network node 60 may include (implement) at least one network function such as an access and mobility management function (AMF), a session management function (SMF), a user place function (UPF), a policy control function (PCF), and an application function (AF). The wireless network node 60 may include a processor 600 such as a microprocessor or an ASIC, a storage unit 610, and a communication unit 620. The storage unit 610 may be any data storage device that stores program code 612 accessed and executed by the processor 600. Examples of the storage unit 610 include, but are not limited to, a SIM, a ROM, a flash memory, a RAM, a hard disk, and an optical data storage device.The communication unit 620 may be a transceiver and is used to transmit and receive signals (e.g., messages or packets) according to the processing results of the processor 600. In one example, the communication unit 620 transmits and receives signals via at least one antenna 622 shown in FIG. 6.

[0141] In one embodiment, the storage unit 610 and the program code 612 may be omitted. The processor 600 may include a storage unit having stored program code.

[0142] The processor 600 may implement any of the steps described in the illustrated embodiments on the wireless network node 60, for example, by executing the program code 612.

[0143] The communication unit 620 may be a transceiver. Alternatively, or in addition thereto, the communication unit 620 may combine a transmission unit and a reception unit configured to respectively transmit and receive signals to and from a wireless terminal (e.g., a user equipment or another wireless network node).

[0144] FIG. 7 shows a schematic diagram of a wireless communication system according to an embodiment of the present disclosure. The wireless communication system shown in FIG. 7 includes a BS and a UE. The BS may transmit the configuration information of C-DRX to the UE, and the UE may perform C-DRX based on the configuration information to receive data (e.g., XR data) from the BS. It should be noted that the communication system may further include other network elements (e.g., AMF, SMF, and UPF).

[0145] FIG. 8 shows a flowchart of a method according to an embodiment of the present procedure. The method may be used in a wireless terminal (e.g., a UE) and includes the following steps.

[0146] Step 801: Receive the configuration information of C-DRX from a wireless network node, and the configuration information indicates non-integer periodicity.

[0147] Step 802: Perform C-DRX based on non-integer periodicity. Based on FIG. 8, the UE receives the configuration information of C-DRX from a wireless network node (e.g., BS, gNB). The configuration information of C-DRX includes integer periodicity. The UE performs C-DRX based on non-integer periodicity, for example, to receive data (e.g., signaling, control information, service data) from the wireless network node.

[0148] In one embodiment, the configuration information indicates fractional periodicity by indicating a fractional value of the fractional periodicity (e.g., 3 per 200 ms, 3 per 100 ms, 9 per 200 ms, 3 per 50 ms, 9 per 125 ms, 9 per 100 ms, or 3 per 25 ms).

[0149] In one embodiment, the configuration information indicates fractional periodicity by indicating a numerator and a denominator. In an embodiment of performing C-DRX based on non-integer periodicity, the wireless terminal determines a C-DRX on-duration start opportunity based on one of Equations 2-1 to 2-7. Details of Equations 2-1 to 2-7 can refer to the above embodiments.

[0150] In one embodiment, the configuration information includes indication information associated with determining a first C-DRX on-duration start opportunity.

[0151] In one embodiment, the indication information includes the least significant bit of the hyper system frame number associated with the first transmission of radio resource control signaling including the configuration information.

[0152] In one embodiment, the indication information includes a reference system frame number (e.g., timeReferenceSFN) and a time domain offset (e.g., timeDomainOffset). In this embodiment, the first C-DRX on-duration start opportunity starts at a time domain location that is the time domain offset before or after the reference system frame number.

[0153] In one embodiment, the indication information includes a reference system frame number indicating the closest system frame number preceding or following the first C-DRX on-duration start opportunity, and a start offset indicating the time domain location of the first C-DRX on-duration start opportunity based on the closest system frame number.

[0154] FIG. 9 shows a flowchart of a method according to an embodiment of this procedure. The method may be used in a wireless network node (e.g., BS) and includes the following steps.

[0155] Step 901: Transmit C-DRX configuration information to a wireless terminal, where the configuration information indicates non-integer periodicity.

[0156] Step 902: Transmit data based on C-DRX having non-integer periodicity to the wireless terminal.

[0157] In FIG. 9, the wireless network node transmits C-DRX configuration information to a wireless terminal (e.g., UE). The configuration information includes and indicates non-integer periodicity. The wireless network node transmits data (e.g., signaling, control information, service data) based on C-DRX having non-integer periodicity.

[0158] In one embodiment, the configuration information indicates fractional periodicity by indicating a fractional value of the fractional periodicity (e.g., 3 per 200 ms, 3 per 100 ms, 9 per 200 ms, 3 per 50 ms, 9 per 125 ms, 9 per 100 ms, or 3 per 25 ms).

[0159] In one embodiment, the configuration information indicates fractional periodicity by indicating a numerator and a denominator. In an embodiment of transmitting data based on C-DRX having non-integer periodicity, the wireless network node determines a C-DRX on-duration start opportunity based on one of Expressions 2-1 to 2-7. Details of Expressions 2-1 to 2-7 can be referred to the above embodiments.

[0160] In one embodiment, the configuration information includes indication information associated with determining a first C-DRX on-duration start opportunity.

[0161] In one embodiment, the indication information includes the least significant bit of the hyper system frame number associated with the first transmission of radio resource control signaling including the configuration information.

[0162] In one embodiment, the indication information includes a reference system frame number (e.g., timeReferenceSFN) and a time domain offset (e.g., timeDomainOffset). In this embodiment, the first C-DRX on-duration start opportunity starts at a time domain location that is the time domain offset before or after the reference system frame number.

[0163] In one embodiment, the indication information includes a reference system frame number indicating the nearest system frame number preceding or following the first C-DRX on-duration start opportunity, and a start offset indicating the time domain location of the first C-DRX on-duration start opportunity based on the nearest system frame number.

[0164] FIG. 10 shows a flowchart of a method according to an embodiment of the present disclosure. The method may be used in a wireless terminal (e.g., UE) or a wireless network node (e.g., BS) and includes the following steps.

[0165] Step 1001: Determine at least one HARQ process ID from a range of HARQ process IDs for a plurality of CG resource opportunities within a period.

[0166] In FIG. 10, a wireless terminal or a wireless network node determines a HARQ process ID from a HARQ process ID range for a plurality of CG resource opportunities within a certain period. Based on the determined HARQ process ID, the wireless terminal or the wireless network node can perform a HARQ process to retransmit data due to a communication failure.

[0167] In one embodiment, the HARQ process ID is determined for each CG resource opportunity. In this embodiment, the wireless terminal transmits an indication of at least one determined HARQ process ID to the wireless network node together with an uplink transmission via the CG resource opportunity.

[0168] In one embodiment, the HARQ process ID is determined for each period. In one embodiment, the HARQ process ID is determined as follows.

[0169]

Number

[0170] In one embodiment, the HARQ process ID is determined for each transmission via a CG resource opportunity. In one embodiment, the HARQ process ID is determined as follows.

[0171]

Number

[0172] In one embodiment, the HARQ process ID of the first CG opportunity among a plurality of CG opportunities is determined based on the sequence number of the first CG opportunity.

[0173] In one embodiment, the HARQ process ID is determined as follows.

[0174] [Number]

[0175] In one embodiment, the period is a CG opportunity period or a C-DRX period. As described above, various embodiments of the present disclosure have been described, but it should be understood that they are presented only as examples and not as limitations. Similarly, the various figures may show an exemplary architecture or configuration provided to enable those skilled in the art to understand the exemplary features and functions of the present disclosure. However, such a person will understand that the present disclosure is not limited to the illustrated exemplary architecture or configuration and can be implemented using various alternative architectures and configurations. Further, as will be understood by those skilled in the art, one or more features of one embodiment can be combined with one or more features of other embodiments described herein. Therefore, the width and scope of the present disclosure should not be limited by any of the above-described exemplary embodiments.

[0176] Also, it should be understood that any reference in this specification to elements using designations such as "first", "second", etc. generally does not limit the quantity or order of those elements. Rather, these names can be used in this specification as a convenient means of distinguishing two or more elements or examples of elements. Therefore, references to first and second elements do not mean that only two elements can be used or that the first element must come before the second element in any way.

[0177] Furthermore, those skilled in the art will understand that information and signals can be represented using any one of a variety of different technologies and techniques. For example, the data, instructions, commands, information, signals, bits, and symbols that may be referenced in the above description can be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0178] One of ordinary skill in the art will further recognize that any one of the various exemplary logical blocks, units, processors, means, 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 programs or design code incorporating instructions (which may be referred to herein, for convenience, as "software" or "software units"), or any combination of these techniques.

[0179] To clearly illustrate this interchangeability of hardware, firmware, and software, various exemplary components, blocks, units, circuits, and steps have been generally described in terms of their functionality. Whether such functionality is implemented as hardware, firmware, software, or a combination of these techniques depends on the particular application and design constraints imposed on the overall system. One of ordinary skill in the art can implement the described functionality in various ways for each particular application, but such implementation decisions are not outside the scope of the present disclosure. According to various embodiments, a processor, apparatus, component, circuit, structure, machine, unit, etc. can be configured to perform one or more of the functions described herein. The terms "configured to" or "configured for" as used herein with respect to a specified operation or function refer to a processor, apparatus, component, circuit, structure, machine, unit, etc. that is physically constructed, programmed, and / or arranged to perform the specified operation or function.

[0180] Furthermore, those skilled in the art will understand that the various exemplary logical blocks, units, devices, components, and circuits described herein can be implemented within or by an integrated circuit (IC) that can include a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic device, or any combination thereof. The logical blocks, units, and circuits can further include antennas and / or transceivers for communicating with various components within a network or within a device. The general-purpose processor can be a microprocessor, but in the alternative, the processor can be any conventional processor, controller, or state machine. The processor can also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other suitable configuration for implementing the functions described herein. When implemented in software, the functions can be stored as one or more instructions or code on a computer-readable medium. Accordingly, the steps of the methods or algorithms disclosed herein can be implemented as software stored on a computer-readable medium.

[0181] The computer-readable medium includes both a computer storage medium and a communication medium including any medium that can transfer a computer program or code from one place to another. The storage medium can be any available medium that can be accessed by a computer. By way of example and not limitation, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired program code in the form of instructions or data structures and that can be accessed by a computer.

[0182] As used herein, the term "unit" refers to software, firmware, hardware, and any combination of these elements for implementing the associated functions described herein. Further, for purposes of explanation, the various units are described as individual units, but as will be apparent to those skilled in the art, two or more units may be combined to form a single unit that implements the associated functions according to embodiments of the present disclosure.

[0183] Furthermore, in embodiments of the present disclosure, a memory or other storage device, as well as communication components, may be used. For clarity, it will be understood that the above description has described embodiments of the present disclosure with reference to different functional units and processors. However, it will be apparent that any suitable distribution of functionality between different functional units, processing logic elements, or domains may be used without detracting from the present disclosure. For example, functions shown as being performed by separate processing logic elements or controllers may be performed by the same processing logic element or controller. Thus, references to specific functional units are not intended to indicate a strict logical or physical structure or organization, but rather are only references to suitable means for providing the described functionality.

[0184] Various changes to the embodiments described in this disclosure will be readily 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 the disclosure. Accordingly, the disclosure is not intended to be limited to the embodiments shown herein, but rather should be accorded the widest scope consistent with the novel features and principles disclosed herein, as set forth in the following claims.

Claims

1. A wireless communication method for use in a wireless terminal, the method comprising: receiving, from a wireless network node, configuration information for connected mode discontinuous reception (C-DRX), the configuration information indicating non-integer periodicity; performing the C-DRX based on the non-integer periodicity; A method comprising:

2. The wireless communication method according to claim 1, wherein the configuration information indicates the fractional periodicity by indicating a fractional value of the fractional periodicity.

3. The wireless communication method according to claim 1, wherein the configuration information indicates the fractional periodicity by indicating a numerator and a denominator.

4. Performing the C-DRX based on the non-integer periodicity comprises: determining a C-DRX on-duration start opportunity based on one of the following formulas, the formula being: 【Number 1】 【Number 2】 【Mathematics 3】 [Number 4] 【Number 5】 【Number 6】 or 【Number 7】 The wireless communication method according to any one of claims 1 to 3.

5. The wireless communication method according to claim 4, wherein the configuration information includes indication information associated with determining the first C-DRX on-duration start opportunity.

6. The wireless communication method according to claim 5, wherein the indication information includes the least significant bit of a hyper system frame number associated with a first transmission of radio resource control signaling including the configuration information.

7. The indication information includes a reference system frame number and a time domain offset, The wireless communication method according to claim 5, wherein the first C-DRX on-duration start opportunity starts at a time domain location that is the time domain offset before or after the reference system frame number.

8. The wireless communication method according to claim 5, wherein the indication information includes a reference system frame number indicating the nearest system frame number preceding or following the first C-DRX on-duration start opportunity, and a start offset indicating a time domain location of the first C-DRX on-duration start opportunity based on the nearest system frame number.

9. A wireless communication method for use in a wireless network node, the method comprising: transmitting, to a wireless terminal, configuration information for connected mode discontinuous reception (C-DRX), the configuration information indicating non-integer periodicity; Transmitting data based on the C-DRX having the non-integer periodicity to the wireless terminal A method comprising the above. **Claim 10** The wireless communication method according to claim 9, wherein the configuration information indicates the fractional periodicity by indicating a fractional value of the fractional periodicity. **Claim 11** The wireless communication method according to claim 9, wherein the configuration information indicates the fractional periodicity by indicating a numerator and a denominator. **Claim 12** Transmitting data based on the C-DRX having the non-integer periodicity to the wireless terminal includes determining a C-DRX on-duration start opportunity based on one of the following formulas, the formula being 【Number 8】 【Number 9】 【Number 10】 【Number 11】 【Number 12】 【Number 13】 or 【Number 14】 The wireless communication method according to any one of claims 9 to 11. **Claim 13** The wireless communication method according to claim 12, wherein the configuration information includes indication information associated with determining the first C-DRX on-duration start opportunity. **Claim 14** The wireless communication method according to claim 12, wherein the indication information includes the least significant bit of a hyper system frame number associated with a first transmission of radio resource control signaling including the configuration information. **Claim 15** The indication information includes a reference system frame number and a time domain offset, The wireless communication method according to claim 5, wherein the first C-DRX on-duration start opportunity starts at a time domain location that is the time domain offset before or after the reference system frame number. **Claim 16** The indication information includes a reference system frame number indicating the nearest system frame number preceding or succeeding the first C-DRX on-duration start opportunity and a start offset indicating a time domain location of the first C-DRX on-duration start opportunity. The wireless communication method according to claim 5. **Claim 17** A wireless communication method for use in a wireless terminal, the method comprising determining at least one hybrid automatic repeat request (HARQ) process identifier (ID) from a HARQ process ID range for a plurality of configured grant (CG) resource opportunities within a certain period A method comprising the above. **Claim 18** The wireless communication method according to claim 17, wherein the HARQ process ID is determined for each CG resource opportunity. **Claim 19** The wireless communication method according to claim 18, further comprising transmitting an instruction of the determined at least one HARQ process ID to the wireless network node together with an uplink transmission via the CG resource opportunity.

20. The wireless communication method according to claim 17, wherein the HARQ process ID is determined for each period.

21. The HARQ process ID is determined by the following, 【Number 15】 The wireless communication method according to claim 20.

22. The wireless communication method according to claim 17, wherein the HARQ process ID is determined for each transmission via the CG resource opportunity.

23. The HARQ process ID is determined by the following, 【Number 16】 The wireless communication method according to claim 22.

24. The wireless communication method according to claim 17, wherein the HARQ process ID of the first CG opportunity among the plurality of CG opportunities is determined based on the sequence number of the first CG opportunity.

25. The HARQ process ID is determined by the following, 【Number 17】 The wireless communication method according to claim 24.

26. The wireless communication method according to any one of claims 17 to 25, wherein the period is a CG opportunity period or a connected mode discontinuous reception period.

27. A wireless communication method for use in a wireless network node, the method comprising: determining at least one hybrid automatic repeat request process (HARQ) process identifier (ID) from a HARQ process ID range for a plurality of configured grant (CG) resource opportunities within a certain period including.

28. The wireless communication method according to claim 27, wherein the HARQ process ID is determined for each CG resource opportunity.

29. The method further comprising receiving, from a wireless terminal, an instruction of the at least one HARQ process ID together with an uplink transmission via the CG resource opportunity, The wireless communication method according to claim 28, wherein the at least one HARQ process ID is determined based on the instruction.

30. The wireless communication method according to claim 27, wherein the HARQ process ID is determined for each period.

31. The HARQ process ID is determined by the following, 【Number 18】 The wireless communication method according to claim 30.

32. The wireless communication method according to claim 27, wherein the HARQ process ID is determined for each transmission via the CG resource opportunity.

33. The HARQ process ID is determined as follows, 【Number 19】 The wireless communication method according to claim 32.

34. The wireless communication method according to claim 27, wherein the HARQ process ID of a first CG opportunity among the plurality of CG opportunities is determined based on the sequence number of the first CG opportunity.

35. The HARQ process ID is determined as follows, 【Number 20】 The wireless communication method according to claim 34.

36. The wireless communication method according to any one of claims 27 to 35, wherein the period is a CG opportunity period or a connected mode discontinuous reception period.

37. A communication unit configured to receive configuration information of connected mode discontinuous reception (C-DRX) from a wireless network node, the configuration information indicating non-integer periodicity, and A processor configured to perform the C-DRX based on the non-integer periodicity A wireless terminal comprising.

38. The wireless terminal according to claim 37, wherein the processor is further configured to perform the wireless communication method according to any one of claims 2 to 8.

39. A wireless network node comprising a communication unit, the communication unit Transmits configuration information of connected mode discontinuous reception (C-DRX) to a wireless terminal, the configuration information indicating non-integer periodicity, Transmits data based on the C-DRX having the non-integer periodicity to the wireless terminal A wireless network node configured to be.

40. The wireless network node according to claim 39, further comprising a processor configured to perform the wireless communication method according to any one of claims 9 to 16.

41. A processor configured to determine at least one hybrid automatic repeat request process (HARQ) process identifier (ID) from a HARQ process ID range for a plurality of configured grant (CG) resource opportunities within a certain period A wireless terminal comprising.

42. The wireless terminal according to claim 41, wherein the processor is further configured to implement the wireless communication method according to any one of claims 18 to 26.

43. A wireless network node comprising a processor configured to determine at least one hybrid automatic repeat request (HARQ) process identifier (ID) from a HARQ process ID range for a plurality of configured grant (CG) resource opportunities within a period.

44. The wireless network node according to claim 43, wherein the processor is further configured to implement the wireless communication method according to any one of claims 28 to 36.

45. A computer program product comprising computer-readable program media code stored thereon, which when executed by a processor causes the processor to implement the wireless communication method according to any one of claims 1 to 36.

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