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 concerns the configuration of wireless communications, particularly fifth-generation wireless communications, and especially discontinuous reception (DRX). [Background technology]

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

[0003] This document relates to methods, systems, and apparatus for configuring C-DRX, and more particularly to methods, systems, and apparatus for C-DRX having a burst transmission pattern. [Overview of the Initiative] [Means for solving the problem]

[0004] This disclosure relates to a wireless communication method for use in wireless terminals. The method is: Receiving configuration information for connected mode discontinuous reception (C-DRX) from a wireless network node, wherein the configuration information exhibits non-integer periodicity, and receiving this information. Performing C-DRX based on non-integer periodicity and Includes.

[0005] Various embodiments may preferably implement the following features: Preferably, the configuration information indicates fractional periodicity by showing fractional values ​​of fractional periodicity.

[0006] good In other words, the constituent information shows fractional periodicity by indicating the numerator and denominator.

[0007] Preferably, the configuration information indicates non-integer periodicity by indicating the data burst frequency (for example, in units of fps (frames per second) or Hz), where non-integer periodicity = 1000 ms / data burst frequency.

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

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

[0010]

number

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

[0012]

number

[0013] Preferably, the opportunity for initiating the C-DRX on duration 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] <​​​​​​​​​​​​​​​​Preferably, the instruction information includes a reference system frame number and a time domain offset, and the first C-DRX on duration initiation opportunity starts at a time domain location which is a time domain offset before or after the reference system frame number.

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

[0027] This disclosure relates to a wireless communication method for use in a wireless network node. The method is: The configuration information for connected mode discontinuous reception (C-DRX) is transmitted to a wireless terminal, and the configuration information exhibits non-integer periodicity. To transmit data based on C-DRX with non-integer periodicity to a wireless terminal. Includes.

[0028] Various embodiments may preferably implement the following features: Preferably, the configuration information indicates fractional periodicity by showing fractional values ​​of fractional periodicity.

[0029] good In other words, the constituent information shows fractional periodicity by indicating the numerator and denominator.

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

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

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

[0033]

number

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

[0035]

number

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

[0037]

number

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

[0039]

number

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

[0041]

number

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

[0043]

number

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

[0045]

number

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

[0047] Preferably, the instruction information includes the least significant bit of the hypersystem frame number associated with the first transmission of the radio resource control signaling, which includes configuration information.

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

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

[0050] This disclosure relates to a wireless communication method for use in a wireless network node. The method is: The configuration information for connected mode discontinuous reception (C-DRX) is transmitted to a wireless terminal, and the configuration information exhibits non-integer periodicity. To transmit data based on C-DRX with non-integer periodicity to a wireless terminal. Includes.

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

[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 instructions for at least one determined HARQ process ID to a wireless network node, along 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 the following:

[0055]

number

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

[0057]

number

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

[0059] Preferably, the HARQ process ID is determined by the following:

[0060]

number

[0061] Preferably, the period is the CG opportunity period or the connected mode discontinuous reception period. This 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 range of HARQ process IDs for multiple configured grant (CG) resource opportunities within a given 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 instructions for at least one HARQ process ID from a wireless terminal, along with an uplink transmission via a CG resource opportunity, the at least one HARQ process ID being determined based on the instructions.

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

[0065]

number

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

[0067]

number

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

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

[0070]

number

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

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

[0073] This disclosure relates to a wireless network node. The wireless network node comprises a communication unit, and the communication unit is The configuration information for connected mode discontinuous reception (C-DRX) is transmitted to the wireless terminal, and the configuration information indicates non-integer periodicity. Transmitting C-DRX-based data with non-integer periodicity to wireless terminals. It is configured in this way.

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

[0075] This disclosure relates to a wireless terminal. The wireless terminal is The system includes a processor configured to determine at least one Hybrid Automated Resend Request (HARQ) process identifier (ID) from a range of HARQ process IDs for multiple configured grant (CG) resource opportunities within a given period.

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

[0077] This disclosure relates to a wireless network node. A wireless network node is The system includes a processor configured to determine at least one Hybrid Automated Resend Request (HARQ) process identifier (ID) from a range of HARQ process IDs for multiple configured grant (CG) resource opportunities within a given period.

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

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

[0080] The exemplary embodiments disclosed herein are intended to provide features that will be readily apparent by referring to the following description in conjunction with the accompanying drawings. Exemplary systems, methods, apparatuses, and computer program products are disclosed herein by various embodiments. However, it should be understood that these embodiments are presented as examples and not as limitations, and it will be apparent to those skilled in the art who have read this disclosure that various modifications to the disclosed embodiments can be made while remaining within the scope of this disclosure.

[0081] Therefore, this disclosure is not limited to the exemplary embodiments and uses described and illustrated herein. Furthermore, the specific order and / or hierarchy of steps in the methods disclosed herein is merely an exemplary approach. 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 this disclosure. Accordingly, those skilled in the art will understand that the methods and techniques disclosed herein present various steps or operations in a sample order, and that this 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 provided in the dependent claims. In the following description, numerous features may be specified as optional, but it is recognized that not all features included in the independent claims should be construed as optional.

[0083] The above and other aspects and embodiments thereof are described in more detail in the drawings, description and claims. [Brief explanation of the drawing]

[0084] [Figure 1] This is a schematic diagram illustrating the discrepancy between the XR traffic arrival time after SFN wraparound and the DRX cycle according to one embodiment of the present disclosure. [Figure 2] This is a schematic diagram of an uplink transmission according to one embodiment of the present disclosure. [Figure 3] This is a schematic diagram of an uplink transmission according to one embodiment of the present disclosure. [Figure 4] This is a schematic diagram of an uplink transmission according to one embodiment of the present disclosure. [Figure 5] This figure shows an example of a schematic diagram of a wireless terminal according to one embodiment of the present disclosure. [Figure 6] This figure shows an example of a schematic diagram of a wireless network node according to one embodiment of the present disclosure. [Figure 7] This is a schematic diagram of a wireless communication system according to one embodiment of the present disclosure. [Figure 8] This is a flowchart of a method according to one embodiment of the present disclosure. [Figure 9] This is a flowchart of a method according to one embodiment of the present disclosure. [Figure 10] This is a flowchart of a method according to one embodiment of the present disclosure. [Modes for carrying out the invention]

[0085] In one embodiment, the frame rates of the XR service (e.g., 15 fps (frames / second), 30 fps, 45 fps, 60 fps, 72 fps, 90 fps, 120 fps) correspond to periodics 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 of ms units) and are not integer factors of 1024 ms. Under such conditions, a mismatch exists between the XR service periodicity and the DRX cycle due to the periodicity mismatch and the SFN (system frame number) wrap-around problem. Figure 1 shows a schematic diagram of the mismatch between the XR traffic arrival time and the DRX cycle after SFN wrap-around according to one embodiment of the present disclosure. As shown in Figure 1, a mismatch between XR service periodicity and the DRX cycle can cause the DRX cycle to become out of sync with the arrival time of XR traffic after SFN wraparound.

[0086] This disclosure provides a method for C-DRX applicable to XR services and their equipment. It should be noted that the method disclosed herein may be applied to configured scheduling mechanisms for uplink (e.g., CG (Configured Grant)) and / or downlink (e.g., SPS (Semi-Persistent Scheduling)). In addition, C-DRX in this disclosure is not limited to XR services and may be applicable to other types of services.

[0087] C-DRX periodicity configuration In one embodiment, the 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, and 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, fractional periodicity can be presented by listing fractional values. For example, fractional periodicity can be presented by listing fractional values ​​as pseudocodes as follows.

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

[0090] Alternatively, or in addition to the above, fractional periodicity can be presented by the numerator and denominator. For example, 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, periodicity is expressed as (numerator / denominator)ms.

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

[0093] SFN and subframes for C-DRX on-duration initiation opportunities In some embodiments, the C-DRX on-duration initiation opportunity is determined based on XR (imperfection) periodicity, eliminating discrepancies between CDRX periodicity and XR imperfection periodicity and avoiding the SFN wrap-around problem.

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

[0095]

number

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

[0097]

number

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

[0099]

number

[0100] Here, m=0 when C-DRX is activated, increments each time SFN=0, 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 used to determine the SFN and subframe of the C-DRX on-duration start opportunity and is explicitly indicated when C-DRX is activated, 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 initiation 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 initiation opportunity can be determined as follows:

[0104]

number

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

[0106]

number

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

[0108]

number

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

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

[0111] In one embodiment, resource opportunities for CG and / or SPS may be determined using the above formula / equation which determines the time domain location (e.g., SFN, subframe number, symbol number, slot number) of a C-DRX on-duration start opportunity.

[0112] Determination of the first (1st) opportunity to initiate the DRX-on duration. When determining the opportunity to initiate the C-DRX on-duration, the UE determines the first opportunity when the C-DRX is activated / reconfigured, or the time-domain location of the initial (first) C-DRX duration initiation opportunity (e.g., SFN). start time and subframe start time It may be necessary to determine (for example, the chances that m=0 or N=0 in equations / equations 2-1 to 2-5 and 2-7).

[0113] In some embodiments, the 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 time domain location (e.g., SFN) of the opportunity for the C-DRX to be activated or the first C-DRX on-duration initiation opportunity. start time , and / or slot start time and / or symbol start time) is difficult to determine. 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 in.

[0114] In one embodiment, a 1-bit hsfn-LSB-Info is configured for the UE to indicate the least significant bit (LSB) 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 nearest SFN before or after the reception of dedicated RRC signaling including C-DRX(re)configuration, or the nearest SFN before or after the 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 the C-DRX (e.g., the start time of the first C-DRX on-duration start opportunity), or the nearest SFN before or after the first C-DRX on-duration start opportunity (e.g., when m=0 in equations 2-1 to 2-5, or when N=0 in equations 2-6 and 2-7).

[0118] In one embodiment, timeDomainOffset and timeReferenceSFN are configured to indicate a 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 initiation opportunity.

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

[0120] For example, the initial ON duration of the first C_DRX starts during SFN and subframe opportunities, as follows:

[0121] - The timeReferenceSFN boundary (e.g., SFN start or end opportunity) before or after receiving the C-DRX configuration (including RRC signaling) minus the timeDomainOffset, or - The timeReferenceSFN boundary (e.g., SFN start or end opportunity) after receiving a C-DRX configuration (including RRC signaling) plus timeDomainOffset.

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

[0123] Embodiments of configuring timeDomainOffset and timeReferenceSFN to indicate a first C-DRX on duration initiation opportunity may be applied to Equations 2-2 and 2-6.

[0124] In one embodiment, drx-Periodicity, drx-StartOffset, and timeReferenceSFN are configured to indicate a 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 equation 2-3). -drxOffset and drxPeriodicity are used to determine the SFN and subframes of the C_DRX on duration start time (see, for example, Equation 2-3).

[0125] In one embodiment, dedicated RRC signaling (re)transmission does not incur costs 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 may be configured within a single CG period. For example, each CG periodicity shown in Figure 2 includes five CG opportunities. Note that the CG periodicity may also be a C-DRX periodicity.

[0127] In one embodiment, the CG opportunity is called the CG resource opportunity. If multiple CG opportunities exist within a single CG cycle, the HARQ process ID can be determined by one of the following embodiments.

[0128] In one embodiment, a range of HARQ process IDs is configured for the CG. The UE selects a HARQ process ID from the range of HARQ process IDs for a CG opportunity and indicates the selected HARQ process ID to the gNB (e.g., BS) along with a 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 retransmissions for a particular HARQ process using available UL resources (e.g., CG resources or UL grants scheduled by the gNB). If there is no UL data transmission for a CG opportunity, the UE sends an instruction to the CG opportunity that there is no UL data transmission to the gNB so that the gNB can distinguish between a UL transmission failure and no UL data transmission. If there is no UL information received by 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 to UL retransmission.

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

[0130]

number

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

[0132]

number

[0133] In one embodiment, the HARQ process ID of a CG machine is determined based on the sequence number of the CG machine. For example, the HARQ process ID of a CG machine may be determined by the following:

[0134]

number

[0135] In this embodiment, harq-ProcID-Offset is the starting HARQ process ID available to the CG, and nrofHARQ-Processes is the total number of HARQ process IDs available to the CG. That is, the range of HARQ process IDs available to the CG is [harq-procID-offset,...,(harq-procID-offset+nrofHARQ-Processes-1)]. Also, CG_occasion_SequenceNumber is the sequence number of a CG opportunity (e.g., one UL grant) during a CG periodicity (or C-DRX periodicity). For example, the CG_occasion_SequenceNumber for each CG in a single CG periodicity may be configured as the CGO SN shown in Figure 4. Specifically, in Figure 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] Figure 5 relates to a schematic diagram of a wireless terminal 50 according to one embodiment of the present disclosure. The wireless terminal 50 may be, but is not limited herein, a user device (UE), a mobile phone, a laptop, a tablet computer, an e-reader, or a portable computer system. The wireless terminal 50 may include a processor 500, such as a microprocessor or 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 identification module (SIM), read-only memory (ROM), flash memory, 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 send and receive signals (e.g., messages or packets) according to the processing results of the processor 500. In one embodiment, the communication unit 520 sends and receives signals via at least one antenna 522 shown in Figure 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 the stored program code.

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

[0139] The communication unit 520 may be a transceiver. Alternatively, or in addition to the above, the communication unit 520 may be a combination of a transmitting unit and a receiving unit configured to transmit and receive signals to and from a wireless network node (e.g., a base station).

[0140] Figure 6 shows a schematic diagram of a wireless network node 60 according to one embodiment of the present disclosure. The wireless network node 60 may be, but is not limited herein, 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). Furthermore, 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), or an application function (AF). The wireless network node 60 may include a processor 600, such as a microprocessor or 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, ROM, flash memory, RAM, a hard disk, and an optical data storage device.The communication unit 620 may be a transceiver and is used to send and receive signals (e.g., messages or packets) according to the processing results of the processor 600. In one example, the communication unit 620 sends and receives signals via at least one antenna 622 as shown in Figure 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 the stored program code.

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

[0143] The communication unit 620 may be a transceiver. Alternatively, or in addition to the communication unit 620, it may be a combination of a transmitting unit and a receiving unit configured to transmit and receive signals to and from a wireless terminal (e.g., a user device or other wireless network node).

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

[0145] Figure 8 shows a flowchart of a method according to one embodiment of this procedure. The method may be used with a wireless terminal (e.g., a UE) and includes the following steps.

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

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

[0148] In one embodiment, the configuration information indicates fractional periodicity by showing fractional values ​​(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 constituent information shows fractional periodicity by indicating the numerator and denominator. In embodiments where C-DRX is implemented based on non-integer periodicity, the wireless terminal determines the C-DRX on-duration initiation opportunity based on one of Equations 2-1 to 2-7. Details of Equations 2-1 to 2-7 can be found in the embodiments described above.

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

[0151] In one embodiment, the instruction information includes the least significant bit of the hypersystem frame number associated with a first transmission of radio resource control signaling, which includes configuration information.

[0152] In one embodiment, the instruction 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 initiation opportunity starts at a time domain location which is a time domain offset before or after the reference system frame number.

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

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

[0155] Step 901: The configuration information of the C-DRX is sent to the wireless terminal, and the configuration information indicates non-integer periodicity.

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

[0157] In Figure 9, the wireless network node transmits C-DRX configuration information to the wireless terminal (e.g., UE). The configuration information includes and is shown to have non-integer periodicity. The wireless network node transmits data (e.g., signaling, control information, service data) based on the C-DRX which has / possesses non-integer periodicity.

[0158] In one embodiment, the configuration information indicates fractional periodicity by showing fractional values ​​(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 constituent information shows fractional periodicity by indicating the numerator and denominator. In embodiments that transmit data based on a C-DRX having non-integer periodicity, the wireless network node determines the C-DRX on-duration initiation opportunity based on one of equations 2-1 to 2-7. Details of equations 2-1 to 2-7 can be found in the embodiments described above.

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

[0161] In one embodiment, the instruction information includes the least significant bit of the hypersystem frame number associated with a first transmission of radio resource control signaling, which includes configuration information.

[0162] In one embodiment, the instruction 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 initiation opportunity starts at a time domain location which is a time domain offset before or after the reference system frame number.

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

[0164] Figure 10 shows a flowchart of a method according to one 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 the range of HARQ process IDs for multiple CG resource opportunities within the cycle.

[0166] In Figure 10, a wireless terminal or wireless network node determines a HARQ process ID from a range of HARQ process IDs for multiple CG resource opportunities within a given period. Based on the determined HARQ process ID, the wireless terminal or 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 instructions for at least one determined HARQ process ID to the wireless network node, along with an uplink transmission over 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 the 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 the CG machine period or the C-DRX period. While various embodiments of this disclosure have been described above, it should be understood that they are presented only as examples and not as limitations. Similarly, various figures may illustrate exemplary architectures or configurations provided to enable those skilled in the art to understand the exemplary features and functions of this disclosure. However, such persons will understand that this disclosure is not limited to the illustrated exemplary architectures or configurations and 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 can be combined with one or more features of other embodiments described herein. Therefore, the breadth and scope of this disclosure should not be limited by any of the exemplary embodiments described above.

[0176] Furthermore, it should be understood that any reference to elements in this specification using designations such as “first,” “second,” etc., does not generally 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. Thus, references to first and second elements do not mean that only two elements can be used, or that the first element must in some way precede the second element.

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

[0178] Those skilled in the art will further recognize that any one of the various exemplary logic blocks, units, processors, means, circuits, methods, and functions described in relation to the embodiments disclosed herein can be implemented by various forms of programs or design code incorporating electronic hardware (e.g., digital implementation, analog implementation, or a combination of both), firmware, instructions (which may be referred to herein as “software” or “software units” for convenience), or any combination thereof.

[0179] To clearly demonstrate this compatibility of hardware, firmware, and software, various exemplary components, blocks, units, circuits, and steps are described above in general terms with respect to their functions. Whether such functions are implemented as hardware, firmware, or software, or a combination of these technologies, depends on the specific application and design constraints imposed on the overall system. A person skilled in the art may implement the described functions in various ways for each specific application, but such implementation decisions do not deviate from the scope of this disclosure. According to various embodiments, processors, devices, components, circuits, structures, machines, units, etc., can be configured to implement 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 mean a processor, device, component, circuit, structure, machine, unit, etc., that is physically built, programmed and / or positioned to implement the specified operation or function.

[0180] Furthermore, those skilled in the art will understand that the various exemplary logic blocks, units, devices, components, and circuits described herein can be implemented or carried out within an integrated circuit (IC) which may 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 logic blocks, units, and circuits may further include antennas and / or transceivers for communicating with various components within a network or device. While a general-purpose processor may be a microprocessor, in alternative examples, the processor may be any conventional processor, controller, or state machine. The processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors working with a DSP core, or any other suitable configuration for carrying out the functions described herein. When implemented in software, the functions may be stored as one or more instructions or codes on a computer-readable medium. Thus, the steps of the methods or algorithms disclosed herein may be implemented as software stored on a computer-readable medium.

[0181] Computer-readable media include both computer storage media and communication media, which include any media that can enable the transfer of computer programs or code from one place to another. Storage media can be any available media that can be accessed by a computer. Such computer-readable media, but not limited to examples, may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage devices, magnetic disk storage devices or other magnetic storage devices, or any other media that can be used to store desired program code in the form of instructions or data structures and can be accessed by a computer.

[0182] As used herein, the term “unit” refers to software, firmware, hardware, and any combination thereof for performing the relevant functions described herein. Furthermore, for illustrative purposes, 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 performs the relevant functions according to embodiments of this disclosure.

[0183] Furthermore, embodiments of this disclosure may utilize memory or other storage devices, as well as communication components. For clarity, it will be understood that the above description has illustrated embodiments of this disclosure with reference to different functional units and processors. However, it will be clear that any appropriate distribution of functionality between different functional units, processing logic elements, or domains may be used without prejudice to this disclosure. For example, a function shown to be performed by a separate processing logic element or controller 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 merely to refer to appropriate means for providing the described functionality.

[0184] Various modifications to the embodiments described herein 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 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 for use in a wireless terminal, wherein the method is Receiving configuration information of a connected-mode discontinuous receive C-DRX from a wireless network node, wherein the configuration information exhibits non-integer periodicity, and receiving The opportunity to initiate the C-DRX-on duration is determined based on the aforementioned non-integer periodicity. Includes, The opportunity for the C-DRX on duration to begin is determined based on the following formula: [Math 1] Wireless communication method.

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

3. The wireless communication method according to claim 1, wherein drx-Periodicity, drx-StartOffset, and timeReferenceSFN are configured to indicate the C-DRX on duration start opportunity.

4. The wireless communication method according to claim 3, wherein the timeReferenceSFN indicates a reference system frame number SFN used to determine the H-SFN, which is the hyperSFN of the nearest system frame preceding or following the C-DRX on duration initiation opportunity or the C-DRX on duration initiation opportunity.

5. The wireless communication method according to claim 3, wherein the drx-StartOffset and the drx-Periodicity are used to determine the SFN and subframe of the C-DRX on duration start opportunity.

6. A wireless communication method for use in a wireless network node, wherein the method is The configuration information of the connected mode discontinuous receiver C-DRX is transmitted to the wireless terminal, wherein the configuration information exhibits non-integer periodicity. To transmit data to the wireless terminal based on the non-integer periodic C-DRX on duration start opportunity. Includes, The opportunity for the C-DRX on duration to begin is determined according to the following formula: [Math 2] Wireless communication method.

7. The wireless communication method according to claim 6, wherein the configuration information indicates the fractional periodicity by indicating fractional periodic values.

8. The wireless communication method according to claim 6, wherein drx-Periodicity, drx-StartOffset, and timeReferenceSFN are configured to indicate the C-DRX on duration start opportunity.

9. The timeReferenceSFN indicates a reference system frame number SFN used to determine the C-DRX on duration initiation opportunity, or the H-SFN which is the hyperSFN of the nearest system frame preceding or following the C-DRX on duration initiation opportunity, and / or The wireless communication method according to claim 8, wherein the drx-StartOffset and the drx-Periodicity are used to determine the SFN and subframe of the C-DRX on duration start opportunity.

10. A communication unit configured to receive configuration information of a connected-mode discontinuous receive C-DRX from a wireless network node, wherein the configuration information exhibits non-integer periodicity. A processor configured to determine the C-DRX on duration initiation opportunity based on the non-integer periodicity, Equipped with, The opportunity for the C-DRX on duration to begin is determined according to the following formula: [Math 3] Wireless terminal.

11. The wireless terminal according to claim 10, wherein the processor is further configured to carry out the wireless communication method according to any one of claims 2 to 5.

12. A wireless network node comprising a communication unit, wherein the communication unit is The configuration information of the connected mode discontinuous receiver C-DRX is transmitted to the wireless terminal, and the configuration information shows non-integer periodicity. The data based on the non-integer periodic C-DRX on duration start opportunity is transmitted to the wireless terminal. It is configured in such a way, The opportunity for the C-DRX on duration to begin is determined according to the following formula: [Math 4] Wireless network node.

13. The wireless network node according to claim 12, further comprising a processor configured to implement the wireless communication method according to any one of claims 6 to 9.

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