Pusch retransmissions
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- LENOVO (BEIJING) LTD
- Filing Date
- 2023-07-19
- Publication Date
- 2026-05-27
Smart Images

Figure 1.1
Abstract
Description
PUSCH RETRANSMISSIONSFIELD
[0001] The present disclosure relates to wireless communications, and more specifically to devices and methods related to retransmissions of physical uplink shared channel (PUSCH) transmissions.BACKGROUND
[0002] A wireless communications system may include one or multiple network communication devices, such as base stations, which may be otherwise known as an eNodeB (eNB) , a next-generation NodeB (gNB) , or other suitable terminology. Each network communication devices, such as a base station may support wireless communications for one or multiple user communication devices, which may be otherwise known as user equipment (UE) , or other suitable terminology. The wireless communications system may support wireless communications with one or multiple user communication devices by utilizing resources of the wireless communication system (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers) . Additionally, the wireless communications system may support wireless communications across various radio access technologies including third generation (3G) radio access technology, fourth generation (4G) radio access technology, fifth generation (5G) radio access technology, among other suitable radio access technologies beyond 5G (e.g., sixth generation (6G) ) .
[0003] In the wireless communications system, physical uplink shared channel (PUSCH) transmission (s) can be dynamically scheduled by an uplink (UL) grant in downlink control information (DCI) , or PUSCH transmission (s) can also correspond to a configured grant (CG) Type 1 or Type 2. Moreover, to realize the low latency requirement and the big packet size, it has been decided in the 3rd Generation Partnership Project (3GPP) to configure multiple CG PUSCH transmission occasions (TOs) in a period of a single CG PUSCH configuration. Study on PUSCH retransmissions is still needed.SUMMARY
[0004] The present disclosure relates to methods, apparatuses, and systems that support PUSCH retransmissions. By determining a plurality of resources for retransmissions of at least some of a plurality of CG PUSCH transmissions and retransmitting the at least some of the CG PUSCH transmissions using the plurality of determined resources, retransmissions of multiple CG PUSCH transmissions in a period of a CG configuration can be scheduled at once, thereby reducing the latency and signaling overhead for performing multiple CG PUSCH retransmissions.
[0005] In an aspect, some implementations of the methods and apparatuses described herein may include: transmitting, to a base station, a plurality of PUSCH transmissions through a plurality of transmission occasions (TOs) in a period of a CG configuration; determining a plurality of resources for retransmissions of at least some of the PUSCH transmissions; and retransmitting, to the base station, the at least some of the PUSCH transmissions using the plurality of determined resources.
[0006] Some implementations of the methods and apparatuses described herein may further include: retransmitting the at least some of the PUSCH transmissions based on DCI received from the base station.
[0007] Some implementations of the methods and apparatuses described herein may further include: retransmitting the at least some of the PUSCH transmissions based on a timer configured by the base station.
[0008] In some implementations of the methods and apparatuses described herein, a cyclic redundancy check (CRC) code of the DCI is scrambled by a configured scheduling-radio network temporary identifier (CS-RNTI) of the user equipment.
[0009] In some implementations of the methods and apparatuses described herein, the TDRA table is determined based on a format of the DCI.
[0010] In some implementations of the methods and apparatuses described herein, the DCI indicates N resources by an index of a time domain resource allocation (TDRA) table, N being an integer greater than 1, and the plurality of resources for retransmission of the at least some of the PUSCH transmissions is based on the N resources.
[0011] In some implementations of the methods and apparatuses described herein, the number of resources for retransmission of the at least some of the PUSCH transmissions is the same as or is larger than N.
[0012] In some implementations of the methods and apparatuses described herein, assuming the number of resources for retransmission of the at least some of the PUSCH transmissions is M and M is less than N, first or last M resources among the N resources are determined as the resources for retransmission of the at least some of the PUSCH transmissions; or the resources for retransmission of the at least some of the PUSCH transmissions are determined based on a first bitmap in the DCI.
[0013] In some implementations of the methods and apparatuses described herein, the plurality of resources for retransmissions of the at least some of the PUSCH transmissions are in continuous slots and have a same start and length indicator value (SLIV) .
[0014] In some implementations of the methods and apparatuses described herein, the DCI indicates a first slot and the SLIV for a first resource of the plurality of resources for retransmissions of the at least some of the PUSCH transmissions.
[0015] In some implementations of the methods and apparatuses described herein, the first slot is indicated by one of the following in the DCI: a single K2 value, in case only one K2 value is indicated in the DCI; or a first K2 value, in case more than one K2 value is indicated in the DCI, wherein a K2 value is used to indicate the number of slots between a slot where the DCI is received and the first slot.
[0016] In some implementations of the methods and apparatuses described herein, the DCI indicates the first resource of the plurality of resources for retransmissions of the at least some of the PUSCH transmissions via an index of a TDRA table, wherein each row of the TDRA table comprises one SLIV; or in case of more than one SLIV in an indexed row of the TDRA table, the first resource is determined via a first or last SLIV from the TDRA table.
[0017] In some implementations of the methods and apparatuses described herein, the DCI comprises a second bitmap to indicate whether at least some of the plurality of PUSCH transmissions are to be retransmitted, and bits of the second bitmap have one-to-one mapping to at least part of the plurality of TOs.
[0018] In some implementations of the methods and apparatuses described herein, a number of bits in the second bitmap is equal to a number of the plurality of TOs.
[0019] In some implementations of the methods and apparatuses described herein, a number of bits in the second bitmap is equal to a maximum number K of PUSCH transmissions indicated by a TDRA table.
[0020] In some implementations of the methods and apparatuses described herein, K is larger than a number L of the plurality of TOs, and first or last L bits in the second bitmap are used to indicate whether the at least some of the plurality of PUSCH transmissions are to be retransmitted; K is less than L, and K bits in the second bitmap are used to indicate whether first or last K PUSCH transmissions of the at least some of the plurality of PUSCH transmissions are to be retransmitted; or K is equal to L, and K bits in the second bitmap are used to indicate whether the at least some of the plurality of PUSCH transmissions are to be retransmitted.
[0021] In some implementations of the methods and apparatuses described herein, the DCI comprises a second bitmap to indicate whether at least some of the plurality of PUSCH transmissions corresponding to hybrid automatic repeat request (HARQ) process numbers (HPNs) are to be retransmitted, and a number of bits in the second bitmap is equal to a maximum number of HPNs configured for the CG configurations.
[0022] In some implementations of the methods and apparatuses described herein, the second bitmap relates to a new data indicator (NDI) field and / or a redundant version (RV) field of the DCI.
[0023] In some implementations of the methods and apparatuses described herein, the DCI is a first DCI, and a second DCI is received which has a same format as the first DCI and the second DCI comprises a CRC code scrambled by a cell-radio network temporary identifier (C-RNTI) of the user equipment, and the first DCI is aligned with the second DCI in size by one of the following: adding padding bits to the NDI field or the RV field of the first DCI or the second another DCI such that a number of bits in the NDI field or the RV field is equal to a maximum value between X and a number of PUSCH transmissions indicated by a TDRA table of the second DCI, wherein X is a number of the plurality of TOs in the period of the CG configuration, or X is a maximum number of HPNs for the CG configuration; or adding padding bits to one of the first DCI and the second DCI that has a smaller size.
[0024] Some implementations of the methods and apparatuses described herein may further include: determining that a CG PUSCH transmission corresponding to an HPN indicated by an HPN field of the DCI is to be retransmitted; and determining that one or more CG PUSCH transmissions corresponding to HPNs larger than the HPN are to be retransmitted. Some implementations of the methods and apparatuses described herein may include: determining that one or more CG PUSCH transmissions corresponding to a number of HPNs larger than the HPN are to be retransmitted, wherein the number of HPNs is indicated by radio resource control (RRC) signaling or the DCI.
[0025] Some implementations of the methods and apparatuses described herein may further include: determining RVs for the retransmissions of the at least some of the PUSCH transmissions.
[0026] In some implementations of the methods and apparatuses described herein, an RV field of the DCI indicates the RVs, the retransmissions of the at least some of the PUSCH transmissions have the same RV; a number of RV fields of the DCI is equal to a number of the plurality of TOs, and each RV field corresponds to one of the plurality of TOs; or the number of RV fields of the DCI is equal to a maximum number of HPNs configured for the CG configurations, and each RV field corresponds to one of the number of HPNs; wherein a RV field comprises 2 bits or 1bit.
[0027] In some implementations of the methods and apparatuses described herein, an RV for a retransmission of the at least some of the PUSCH transmissions is different from an RV for an original transmission of the PUSCH transmission.
[0028] In some implementations of the methods and apparatuses described herein, a number of RV fields of the DCI is equal to a maximum the number K of PUSCH transmissions indicated by a TDRA table. In some implementations of the methods and apparatuses described herein, K is greater than a number L of the plurality of TOs, and first or last L RV fields of the DCI are used for the retransmissions of the at least some of the PUSCH transmissions; K is less than L, and K RV fields of the DCI are used for first or last K retransmissions of the at least some of the PUSCH transmissions; or K is equal to L, and K RV fields of the DCI are used for the retransmissions of the at least some of the PUSCH transmissions.
[0029] In some implementations of the methods and apparatuses described herein, the DCI is a first DCI, and a second DCI is received which has a same format as the first DCI and the second DCI comprises a CRC code scrambled by a C-RNTI of the user equipment, and the first DCI is aligned with the second DCI in size by one of the following: adding padding bits to the RV field of the first DCI or the second DCI such that a number of bits in the RV field is equal to a maximum value between the number of the plurality of TOs and the maximum number of PUSCH transmissions indicated by a TDRA table of the second DCI; adding padding bits to the RV field of the first DCI or the second DCI such that the number of bits in the RV field is equal to a maximum value between the number of HPNs and the maximum number of PUSCH transmissions indicated by the TDRA table of the second DCI; or adding padding bits to one of the first DCI and the second DCI that has a smaller size.
[0030] In some implementations of the methods and apparatuses described herein, the timer is started or re-started after a first or last valid TO of the plurality of TOs; or the timer is started or re-started after a last TO in time domain which is not indicated as unused by the user equipment.
[0031] Some implementations of the methods and apparatuses described herein may further include: in case no acknowledgement (ACK) is received for a HPN in the CG period after the timer expired, determine that a PUSCH transmission corresponding to the HPN is to be retransmitted.
[0032] In another aspect, some implementations of the methods and apparatuses described herein may include: receiving, from a user equipment, a plurality of PUSCH transmissions through a plurality of TOs in a period of a CG configuration; determining a plurality of resources for retransmissions of at least some of the PUSCH transmissions; and receiving, from the user equipment, the retransmissions of the at least some of the PUSCH transmissions using the plurality of determined resources.
[0033] Some implementations of the methods and apparatuses described herein may further include: receiving the at least some of the PUSCH transmissions that are retransmitted by the user equipment based on DCI.
[0034] Some implementations of the methods and apparatuses described herein may further include: configuring a timer for retransmissions of the at least some of the PUSCH transmissions; and receiving the retransmissions based on the timer.
[0035] In some implementations of the methods and apparatuses described herein, a CRC code of the DCI is scrambled by a CS-RNTI of the user equipment.
[0036] In some implementations of the methods and apparatuses described herein, the TDRA table is determined based on a format of the DCI.
[0037] In some implementations of the methods and apparatuses described herein, the DCI indicates N resources by an index of a TDRA table, N being an integer greater than 1, and the plurality of resources for retransmission of the at least some of the PUSCH transmissions is based on the N resources.
[0038] In some implementations of the methods and apparatuses described herein, the number of resources for retransmission of the at least some of the PUSCH transmissions is the same as or is larger than N.
[0039] In some implementations of the methods and apparatuses described herein, assuming the number of resources for retransmission of the at least some of the PUSCH transmissions is M and M is less than N, first or last M resources among the N resources are determined as the resources for retransmission of the at least some of the PUSCH transmissions; or the resources for retransmission of the at least some of the PUSCH transmissions are determined based on a first bitmap in the DCI.
[0040] In some implementations of the methods and apparatuses described herein, the plurality of resources for retransmissions of the at least some of the PUSCH transmissions are in continuous slots and have a same SLIV.
[0041] In some implementations of the methods and apparatuses described herein, the DCI indicates a first slot and the SLIV for a first resource of the plurality of resources for retransmissions of the at least some of the PUSCH transmissions.
[0042] In some implementations of the methods and apparatuses described herein, the first slot is indicated by one of the following in the DCI: a single K2 value, in case only one K2 value is indicated in the DCI; or a first K2 value, in case more than one K2 value is indicated in the DCI, wherein a K2 value is used to indicate the number of slots between a slot where the DCI is received and the first slot.
[0043] In some implementations of the methods and apparatuses described herein, the DCI indicates the first resource of the plurality of resources for retransmissions of the at least some of the PUSCH transmissions via an index of a TDRA table, wherein each row of the TDRA table comprises one SLIV; or in case of more than one SLIV in an indexed row of the TDRA table, the first resource is determined via a first or last SLIV from the TDRA table.
[0044] In some implementations of the methods and apparatuses described herein, the DCI comprises a second bitmap to indicate whether at least some of the plurality of PUSCH transmissions are to be retransmitted, and bits of the second bitmap have one-to-one mapping to at least part of the plurality of TOs.
[0045] In some implementations of the methods and apparatuses described herein, a number of bits in the second bitmap is equal to a number of the plurality of TOs.
[0046] In some implementations of the methods and apparatuses described herein, a number of bits in the second bitmap is equal to a maximum number K of PUSCH transmissions indicated by a TDRA table.
[0047] In some implementations of the methods and apparatuses described herein, K is larger than a number L of the plurality of TOs, and first or last L bits in the second bitmap are used to indicate whether the at least some of the plurality of PUSCH transmissions are to be retransmitted; K is less than L, and K bits in the second bitmap are used to indicate whether first or last K PUSCH transmissions of the at least some of the plurality of PUSCH transmissions are to be retransmitted; or K is equal to L, and K bits in the second bitmap are used to indicate whether the at least some of the plurality of PUSCH transmissions are to be retransmitted.
[0048] In some implementations of the methods and apparatuses described herein, the DCI comprises a second bitmap to indicate whether at least some of the plurality of PUSCH transmissions corresponding to HPNs are to be retransmitted, and a number of bits in the second bitmap is equal to a maximum number of HPNs configured for the CG configurations.
[0049] In some implementations of the methods and apparatuses described herein, the second bitmap relates to an NDI) field and / or an RV field of the DCI.
[0050] In some implementations of the methods and apparatuses described herein, the DCI is a first DCI, and a second DCI is transmitted which has a same format as the first DCI and the second DCI comprises a CRC code scrambled by a C-RNTI of the user equipment, and the first DCI is aligned with the second DCI in size by one of the following: adding padding bits to the NDI field or the RV field of the first DCI or the second another DCI such that a number of bits in the NDI field or the RV field is equal to a maximum value between X and a number of PUSCH transmissions indicated by a TDRA table of the second DCI, wherein X is a number of the plurality of TOs in the period of the CG configuration, or X is a maximum number of HPNs for the CG configuration; or adding padding bits to one of the first DCI and the second DCI that has a smaller size.
[0051] Some implementations of the methods and apparatuses described herein may further include: receiving a retransmission of a CG PUSCH transmission corresponding to an HPN indicated by an HPN field of the DCI; and receiving retransmissions of one or more CG PUSCH transmissions corresponding to HPNs larger than the HPN. Some implementations of the methods and apparatuses described herein may include: receiving retransmissions of one or more CG PUSCH transmissions corresponding to a number of HPNs larger than the HPN, wherein the number of HPNs is indicated by RRC signaling or the DCI.
[0052] Some implementations of the methods and apparatuses described herein may further include: determining RVs for the retransmissions of the at least some of the PUSCH transmissions.
[0053] In some implementations of the methods and apparatuses described herein, an RV field of the DCI indicates the RVs, the retransmissions of the at least some of the PUSCH transmissions have the same RV; a number of RV fields of the DCI is equal to a number of the plurality of TOs, and each RV field corresponds to one of the plurality of TOs; or the number of RV fields of the DCI is equal to a maximum number of HPNs configured for the CG configurations, and each RV field corresponds to one of the number of HPNs; wherein a RV field comprises 2 bits or 1bit.
[0054] In some implementations of the methods and apparatuses described herein, an RV for a retransmission of the at least some of the PUSCH transmissions is different from an RV for an original transmission of the PUSCH transmission.
[0055] In some implementations of the methods and apparatuses described herein, a number of RV fields of the DCI is equal to a maximum the number K of PUSCH transmissions indicated by a TDRA table. In some implementations of the methods and apparatuses described herein, K is greater than a number L of the plurality of TOs, and first or last L RV fields of the DCI are used for the retransmissions of the at least some of the PUSCH transmissions; K is less than L, and K RV fields of the DCI are used for first or last K retransmissions of the at least some of the PUSCH transmissions; or K is equal to L, and K RV fields of the DCI are used for the retransmissions of the at least some of the PUSCH transmissions.
[0056] In some implementations of the methods and apparatuses described herein, the DCI is a first DCI, and a second DCI is transmitted which has a same format as the first DCI and the second DCI comprises a CRC code scrambled by a C-RNTI of the user equipment, and wherein the first DCI is aligned with the second DCI in size by one of the following: adding padding bits to the RV field of the first DCI or the second DCI such that a number of bits in the RV field is equal to a maximum value between the number of the plurality of TOs and the maximum number of PUSCH transmissions indicated by a TDRA table of the second DCI; adding padding bits to the RV field of the first DCI or the second DCI such that the number of bits in the RV field is equal to a maximum value between the number of HPNs and the maximum number of PUSCH transmissions indicated by the TDRA table of the second DCI; or adding padding bits to one of the first DCI and the second DCI that has a smaller size.
[0057] In some implementations of the methods and apparatuses described herein, the timer is started or re-started after a first or last valid TO of the plurality of TOs; or the timer is started or re-started after a last TO in time domain which is not indicated as unused by the user equipment.
[0058] Some implementations of the methods and apparatuses described herein may further include: receiving a retransmission of a PUSCH transmission corresponding to an HPN after the timer expired, wherein no ACK for the PUSCH transmission corresponding to the HPN is transmitted in the CG period.BRIEF DESCRIPTION OF THE DRAWINGS
[0059] FIG. 1A illustrates an example of a wireless communications system that supports performing PUSCH retransmissions in accordance with aspects of the present disclosure.
[0060] FIG. 1B illustrates an example diagram of CG PUSCH TOs in a period of a CG configuration.
[0061] FIG. 2 illustrates an example signaling chart of an example process that supports performing PUSCH retransmissions in accordance with aspects of the present disclosure.
[0062] FIG. 3 illustrates an example diagram that resources for PUSCH retransmissions are determined from resources indicated by DCI, in accordance with aspects of the present disclosure.
[0063] FIG. 4 illustrates an example diagram that resources for PUSCH retransmissions are in continuous slots and a SLIV is indicated by DCI, in accordance with aspects of the present disclosure.
[0064] FIG. 5 illustrates an example diagram that a bitmap indicates whether a PUSCH transmission is to be retransmitted, in accordance with aspects of the present disclosure.
[0065] FIG. 6 illustrates an example diagram that PUSCH transmissions corresponding to certain HPNs are to be retransmitted, in accordance with aspects of the present disclosure.
[0066] FIG. 7 illustrates an example of a device that supports performing PUSCH retransmissions in accordance with aspects of the present disclosure.
[0067] FIG. 8 illustrates an example of another device that supports performing PUSCH retransmissions in accordance with aspects of the present disclosure.
[0068] FIG. 9 illustrates an example of a processor that supports performing PUSCH retransmissions in accordance with aspects of the present disclosure.
[0069] FIG. 10 illustrates an example of another processor that supports performing PUSCH retransmissions in accordance with aspects of the present disclosure.
[0070] FIG. 11 illustrates a flowchart of a method that supports performing PUSCH retransmissions in accordance with aspects of the present disclosure.
[0071] FIG. 12 illustrates a flowchart of another method that supports performing PUSCH retransmissions in accordance with aspects of the present disclosure.DETAILED DESCRIPTION
[0072] Principles of the present disclosure will now be described with reference to some embodiments. It is to be understood that these embodiments are described only for the purpose of illustration and help those skilled in the art to understand and implement the present disclosure, without suggesting any limitation as to the scope of the disclosure. The disclosure described herein may be implemented in various manners other than the ones described below.
[0073] In the following description and claims, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skills in the art to which this disclosure belongs.
[0074] References in the present disclosure to “one embodiment, ” “an example embodiment, ” “an embodiment, ” “some embodiments, ” and the like indicate that the embodiment (s) described may include a particular feature, structure, or characteristic, but it is not necessary that every embodiment includes the particular feature, structure, or characteristic. Moreover, such phrases do not necessarily refer to the same embodiment (s) . Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
[0075] It shall be understood that although the terms “first” and “second” or the like may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element could also be termed as a second element, and similarly, a second element could also be termed as a first element, without departing from the scope of embodiments. As used herein, the term “and / or” includes any and all combinations of one or more of the listed terms.
[0076] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a” , “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” , “comprising” , “has” , “having” , “includes” and / or “including” , when used herein, specify the presence of stated features, elements, and / or components etc., but do not preclude the presence or addition of one or more other features, elements, components and / or combinations thereof. As used herein, “at least one of the following: <a list of two or more elements>” and “at least one of <a list of two or more elements>” and similar wording, where the list of two or more elements are joined by “and” or “or” , mean at least any one of the elements, or at least any two or more of the elements, or at least all the elements.
[0077] In the wireless communications system, PUSCH transmission (s) can be dynamically scheduled by an UL grant in a DCI, for example DCI format 0_1, the DCI could indicate the SLIV by an index to a TDRA table, the table could be: pusch-TimeDomainAllocationListForMultiPUSCH in pusch-Config contains row indicating a resource allocation for two to eight contiguous PUSCHs, K2 indicates the slot where UE shall transmit the first PUSCH of the multiple PUSCHs. Each PUSCH has a separate SLIV and mapping type. The number of scheduled PUSCHs is signalled by the number of indicated valid SLIVs in the row of the pusch-TimeDomainAllocationListForMultiPUSCH signalled in DCI format 0_1. For example, the TDRA could be shown as Table 1, there are 4 SLIVs for index=2.
[0078] Table 1: an example TDRA table.
[0079] For pusch-TimeDomainAllocationListForMultiPUSCH-r17 in pusch-Config, each PUSCH has a separate SLIV, mapping type and K2. The number of scheduled PUSCHs is signalled by the number of indicated SLIVs in the row of the pusch-TimeDomainAllocationListForMultiPUSCH-r17 signalled in DCI format 0_1.
[0080] If a UE is configured with pusch-TimeDomainAllocationListForMultiPUSCH-r17 in which one or more rows contain multiple SLIVs for PUSCH on a UL bandwidth part (BWP) of a serving cell, and the UE is indicated re-transmission of PUSCH by DCI format 0_1, where the PUSCH is correspond to a configured grant Type 1 or Type 2, the UE does not expect that the number of indicated SLIVs in the row of the pusch-TimeDomainAllocationListForMultiPUSCH-r17 by the DCI is more than one. Thus to say, a single DCI could not scheduling multiple SLIV to retransmit PUSCH correspond to a configured grant Type 1 or Type 2.
[0081] For DCI format 0_1, there could be multiple NDI bits to indicate the scheduled transmission block (TB) is retransmission or initial transmission, the number of NDI bits is determined based on the maximum number of PUSCH in the TDRA table. Multiple RV bits to indicate the RV of multiple scheduled TB is 0 or 2, and the number of RV bits is also determined based on the maximum number of PUSCH in the TDRA table. Least Significant Bit (LSB) bits of the RV field and NDI field, respectively, correspond to the last scheduled PUSCH indicated by the TDRA information field. There could be a HPN field to indicate the first HPN of the first scheduled PUSCH, and the HPN of other PUSCH is increased one by one in the order of scheduled.
[0082] For example, the maximum number of PUSCH in the TDRA table is 4, then there could be 4 bits NDI and 4 bits RV in a DCI, and assuming the two SLIVs are scheduled by the TDTA field in the DCI, and the start HPN is also indicated by the DCI is 1, then which means 2 TBs are scheduled by the DCI, and the corresponding HPN is 1 and 2.4 bits NDI could be “0010” and LSB bits “10” indicate the NDI corresponding to the PUSCH transmission 1 and PUSCH transmission 2. And RV “0011” indicates the corresponding RV of these two TB is 2. As for the PUSCH is retransmission of initial transmission, it is determined according to the NDI bit inverted or not for a HPN. It means the scheduled multiple PUSCHs could include some initial transmission and some retransmission.
[0083] As indicated above, PUSCH transmission (s) can also correspond to a CG Type 1 or Type 2. The configured grant Type 1 PUSCH transmission is semi-statically configured to operate upon the reception of higher layer parameter of configuredGrantConfig including rrc-ConfiguredUplinkGrant without the detection of an UL grant in a DCI. The configured grant Type 2 PUSCH transmission is semi-persistently scheduled by an UL grant in a valid activation DCI after the reception of higher layer parameter configuredGrantConfig not including rrc-ConfiguredUplinkGrant.
[0084] UE would be configured one or multiple CG configurations, and for each CG configuration, a period P and the CG type are provided.
[0085] The higher layer parameter cg-nrofSlots, provides the number of consecutive slots allocated within a configured grant period. The higher layer parameter cg-nrofPUSCH-InSlot provides the number of consecutive PUSCH allocations within a slot, where the first PUSCH allocation follows the higher layer parameter timeDomainAllocation for Type 1 PUSCH transmission or the higher layer configuration according to TS 38.321, and UL grant received on the DCI for Type 2 PUSCH transmissions, and the remaining PUSCH allocations have the same length and PUSCH mapping type, and are appended following the previous allocations without any gaps. The same combination of start symbol and length and PUSCH mapping type repeats over the consecutively allocated slots. A retransmission timer could be configured, and the timer is started after a PUSCH transmission, if after the time expire, UE has not received the corresponding ACK for the corresponding HPN, the TB would be retransmit by a new CG PUSCH.
[0086] The retransmission of CG PUSCH could also be scheduled by DCI with CRC scrambled by CS-RNTI with NDI=1. The DCI could indicate the retransmission of a CG PUSCH by indicating the corresponding HPN. For example, the DCI with CRC scrambled by CS-RNTI with NDI=1 also indicates HPN=1, which means the CG PUSCH with HPN=1 should be retransmitted according to the DCI.
[0087] With the development of wireless communication technology, scenarios of traffic with low latency and big packet size have emerged. For example, Xtended Reality (XR) is a broad term covering Augmented Reality (AR) , Mixed Reality (MR) and Virtual Reality (VR) . Along with Cloud Computing, XR applications typically require high throughput and low latency, and have a big packet size and variable data packet size. To realize the low latency requirement and the big packet size, it has been decided in 3GPP to configure multiple CG PUSCH TOs in a period of a single CG PUSCH configuration.
[0088] For some scenarios, e.g., XR services, reliability and latency are import requirement, and if multiple TOs are configured in a CG period and multiple TBs could be transmitted in a CG period, to guarantee the reliability, retransmission should be support. If the retransmission is scheduled by the DCI, according to legacy specification, one DCI with CRC scrambled by CS-RNTI with NDI=1 could only schedule one TB each time, if multiple TBs need to be retransmitted, multiple DCI should be transmitted which would be increase the latency, so how to schedule multiple CG retransmission using single DCI need to be studied. What’s more, if the retransmission is based on the timer, when to start the timer should be determined.
[0089] In view of the above and other aspects, embodiments of the present disclosure provide a solution for PUSCH retransmissions. In the solution, a UE transmits, to a base station, a plurality of PUSCH transmissions through a plurality of TOs in a period of a CG configuration, determines a plurality of resources for retransmissions of at least some of the PUSCH transmissions, and retransmits the at least some of the PUSCH transmissions using the plurality of determined resources. In some implementations of the solution, the UE may retransmit the at least some of the PUSCH transmissions based on DCI received from the base station. In other implementations of the solution, the UE may retransmit the at least some of the PUSCH transmissions based on a timer configured by the base station.
[0090] In this way, retransmissions of multiple CG PUSCH transmissions in a period of a CG configuration can be scheduled at once, thereby reducing the latency and signaling overhead for performing multiple CG PUSCH retransmissions.
[0091] Aspects of the present disclosure are described in the context of a wireless communications system.
[0092] FIG. 1A illustrates an example of a wireless communications system 100 that supports performing PUSCH retransmissions in accordance with aspects of the present disclosure. The wireless communications system 100 may include one or more network entities 102 (also referred to as network equipment (NE) ) , one or more UEs 104, a core network 106, and a packet data network 108. The wireless communications system 100 may support various radio access technologies. In some implementations, the wireless communications system 100 may be a 4G network, such as an LTE network or an LTE-Advanced (LTE-A) network. In some other implementations, the wireless communications system 100 may be a 5G network, such as an NR network. In other implementations, the wireless communications system 100 may be a combination of a 4G network and a 5G network, or other suitable radio access technology including Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20. The wireless communications system 100 may support radio access technologies beyond 5G. Additionally, the wireless communications system 100 may support technologies, such as time division multiple access (TDMA) , frequency division multiple access (FDMA) , or code division multiple access (CDMA) , etc.
[0093] The one or more network entities 102 may be dispersed throughout a geographic region to form the wireless communications system 100. One or more of the network entities 102 described herein may be or include or may be referred to as a network node, a base station, a network element, a radio access network (RAN) , a base transceiver station, an access point, a NodeB, an eNodeB (eNB) , a next-generation NodeB (gNB) , or other suitable terminology. A network entity 102 and a UE 104 may communicate via a communication link 110, which may be a wireless or wired connection. For example, a network entity 102 and a UE 104 may perform wireless communication (e.g., receive signaling, transmit signaling) over a Uu interface.
[0094] A network entity 102 may provide a geographic coverage area 112 for which the network entity 102 may support services (e.g., voice, video, packet data, messaging, broadcast, etc. ) for one or more UEs 104 within the geographic coverage area 112. For example, a network entity 102 and a UE 104 may support wireless communication of signals related to services (e.g., voice, video, packet data, messaging, broadcast, etc. ) according to one or multiple radio access technologies. In some implementations, a network entity 102 may be moveable, for example, a satellite associated with a non-terrestrial network. In some implementations, different geographic coverage areas 112 associated with the same or different radio access technologies may overlap, but the different geographic coverage areas 112 may be associated with different network entities 102. Information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
[0095] The one or more UEs 104 may be dispersed throughout a geographic region of the wireless communications system 100. A UE 104 may include or may be referred to as a mobile device, a wireless device, a remote device, a remote unit, a handheld device, or a subscriber device, or some other suitable terminology. In some implementations, the UE 104 may be referred to as a unit, a station, a terminal, or a client, among other examples. Additionally, or alternatively, the UE 104 may be referred to as an Internet-of-Things (IoT) device, an Internet-of-Everything (IoE) device, or machine-type communication (MTC) device, among other examples. In some implementations, a UE 104 may be stationary in the wireless communications system 100. In some other implementations, a UE 104 may be mobile in the wireless communications system 100.
[0096] The one or more UEs 104 may be devices in different forms or having different capabilities. Some examples of UEs 104 are illustrated in FIG. 1. A UE 104 may be capable of communicating with various types of devices, such as the network entities 102, other UEs 104, or network equipment (e.g., the core network 106, the packet data network 108, a relay device, an integrated access and backhaul (IAB) node, or another network equipment) , as shown in FIG. 1. Additionally, or alternatively, a UE 104 may support communication with other network entities 102 or UEs 104, which may act as relays in the wireless communications system 100.
[0097] A UE 104 may also be able to support wireless communication directly with other UEs 104 over a communication link 114. For example, a UE 104 may support wireless communication directly with another UE 104 over a device-to-device (D2D) communication link. In some implementations, such as vehicle-to-vehicle (V2V) deployments, vehicle-to-everything (V2X) deployments, or cellular-V2X deployments, the communication link 114 may be referred to as a sidelink. For example, a UE 104 may support wireless communication directly with another UE 104 over a PC5 interface.
[0098] A network entity 102 may support communications with the core network 106, or with another network entity 102, or both. For example, a network entity 102 may interface with the core network 106 through one or more backhaul links 116 (e.g., via an S1, N2, N2, or another network interface) . The network entities 102 may communicate with each other over the backhaul links 116 (e.g., via an X2, Xn, or another network interface) . In some implementations, the network entities 102 may communicate with each other directly (e.g., between the network entities 102) . In some other implementations, the network entities 102 may communicate with each other or indirectly (e.g., via the core network 106) . In some implementations, one or more network entities 102 may include subcomponents, such as an access network entity, which may be an example of an access node controller (ANC) . An ANC may communicate with the one or more UEs 104 through one or more other access network transmission entities, which may be referred to as a radio heads, smart radio heads, or transmission-reception points (TRPs) .
[0099] In some implementations, a network entity 102 may be configured in a disaggregated architecture, which may be configured to utilize a protocol stack physically or logically distributed among two or more network entities 102, such as an integrated access backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance) , or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN) ) . For example, a network entity 102 may include one or more of a central unit (CU) , a distributed unit (DU) , a radio unit (RU) , a RAN Intelligent Controller (RIC) (e.g., a Near-Real Time RIC (Near-RT RIC) , a Non-Real Time RIC (Non-RT RIC) ) , a Service Management and Orchestration (SMO) system, or any combination thereof.
[0100] An RU may also be referred to as a radio head, a smart radio head, a remote radio head (RRH) , a remote radio unit (RRU) , or a transmission reception point (TRP) . One or more components of the network entities 102 in a disaggregated RAN architecture may be co-located, or one or more components of the network entities 102 may be located in distributed locations (e.g., separate physical locations) . In some implementations, one or more network entities 102 of a disaggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU) , a virtual DU (VDU) , a virtual RU (VRU) ) .
[0101] Split of functionality between a CU, a DU, and an RU may be flexible and may support different functionalities depending upon which functions (e.g., network layer functions, protocol layer functions, baseband functions, radio frequency functions, and any combinations thereof) are performed at a CU, a DU, or an RU. For example, a functional split of a protocol stack may be employed between a CU and a DU such that the CU may support one or more layers of the protocol stack and the DU may support one or more different layers of the protocol stack. In some implementations, the CU may host upper protocol layer (e.g., a layer 3 (L3) , a layer 2 (L2) ) functionality and signaling (e.g., Radio Resource Control (RRC) , service data adaption protocol (SDAP) , Packet Data Convergence Protocol (PDCP) ) . The CU may be connected to one or more DUs or RUs, and the one or more DUs or RUs may host lower protocol layers, such as a layer 1 (L1) (e.g., physical (PHY) layer) or an L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU 160.
[0102] Additionally, or alternatively, a functional split of the protocol stack may be employed between a DU and an RU such that the DU may support one or more layers of the protocol stack and the RU may support one or more different layers of the protocol stack. The DU may support one or multiple different cells (e.g., via one or more RUs) . In some implementations, a functional split between a CU and a DU, or between a DU and an RU may be within a protocol layer (e.g., some functions for a protocol layer may be performed by one of a CU, a DU, or an RU, while other functions of the protocol layer are performed by a different one of the CU, the DU, or the RU) .
[0103] A CU may be functionally split further into CU control plane (CU-CP) and CU user plane (CU-UP) functions. A CU may be connected to one or more DUs via a midhaul communication link (e.g., F1, F1-c, F1-u) , and a DU may be connected to one or more RUs via a fronthaul communication link (e.g., open fronthaul (FH) interface) . In some implementations, a midhaul communication link or a fronthaul communication link may be implemented in accordance with an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities 102 that are in communication via such communication links.
[0104] The core network 106 may support user authentication, access authorization, tracking, connectivity, and other access, routing, or mobility functions. The core network 106 may be an evolved packet core (EPC) , or a 5G core (5GC) , which may include a control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management functions (AMF) ) and a user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) . In some implementations, the control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management (e.g., data bearers, signal bearers, etc. ) for the one or more UEs 104 served by the one or more network entities 102 associated with the core network 106.
[0105] The core network 106 may communicate with the packet data network 108 over one or more backhaul links 116 (e.g., via an S1, N2, N2, or another network interface) . The packet data network 108 may include an application server 118. In some implementations, one or more UEs 104 may communicate with the application server 118. A UE 104 may establish a session (e.g., a protocol data unit (PDU) session, or the like) with the core network 106 via a network entity 102. The core network 106 may route traffic (e.g., control information, data, and the like) between the UE 104 and the application server 118 using the established session (e.g., the established PDU session) . The PDU session may be an example of a logical connection between the UE 104 and the core network 106 (e.g., one or more network functions of the core network 106) .
[0106] In the wireless communications system 100, the network entities 102 and the UEs 104 may use resources of the wireless communications system 100 (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers) ) to perform various operations (e.g., wireless communications) . In some implementations, the network entities 102 and the UEs 104 may support different resource structures. For example, the network entities 102 and the UEs 104 may support different frame structures. In some implementations, such as in 4G, the network entities 102 and the UEs 104 may support a single frame structure. In some other implementations, such as in 5G and among other suitable radio access technologies, the network entities 102 and the UEs 104 may support various frame structures (i.e., multiple frame structures) . The network entities 102 and the UEs 104 may support various frame structures based on one or more numerologies.
[0107] One or more numerologies may be supported in the wireless communications system 100, and a numerology may include a subcarrier spacing and a cyclic prefix. A first numerology (e.g., μ=0) may be associated with a first subcarrier spacing (e.g., 15 kHz) and a normal cyclic prefix. In some implementations, the first numerology (e.g., μ=0) associated with the first subcarrier spacing (e.g., 15 kHz) may utilize one slot per subframe. A second numerology (e.g., μ=1) may be associated with a second subcarrier spacing (e.g., 30 kHz) and a normal cyclic prefix. A third numerology (e.g., μ=2) may be associated with a third subcarrier spacing (e.g., 60 kHz) and a normal cyclic prefix or an extended cyclic prefix. A fourth numerology (e.g., μ=3) may be associated with a fourth subcarrier spacing (e.g., 120 kHz) and a normal cyclic prefix. A fifth numerology (e.g., μ=4) may be associated with a fifth subcarrier spacing (e.g., 240 kHz) and a normal cyclic prefix.
[0108] A time interval of a resource (e.g., a communication resource) may be organized according to frames (also referred to as radio frames) . Each frame may have a duration, for example, a 10 millisecond (ms) duration. In some implementations, each frame may include multiple subframes. For example, each frame may include 10 subframes, and each subframe may have a duration, for example, a 1 ms duration. In some implementations, each frame may have the same duration. In some implementations, each subframe of a frame may have the same duration.
[0109] Additionally, or alternatively, a time interval of a resource (e.g., a communication resource) may be organized according to slots. For example, a subframe may include a number (e.g., quantity) of slots. The number of slots in each subframe may also depend on the one or more numerologies supported in the wireless communications system 100. For instance, the first, second, third, fourth, and fifth numerologies (i.e., μ=0, μ=1, μ=2, μ=3, μ=4) associated with respective subcarrier spacings of 15 kHz, 30 kHz, 60 kHz, 120 kHz, and 240 kHz may utilize a single slot per subframe, two slots per subframe, four slots per subframe, eight slots per subframe, and 16 slots per subframe, respectively. Each slot may include a number (e.g., quantity) of symbols (e.g., OFDM symbols) . In some implementations, the number (e.g., quantity) of slots for a subframe may depend on a numerology. For a normal cyclic prefix, a slot may include 14 symbols. For an extended cyclic prefix (e.g., applicable for 60 kHz subcarrier spacing) , a slot may include 12 symbols. The relationship between the number of symbols per slot, the number of slots per subframe, and the number of slots per frame for a normal cyclic prefix and an extended cyclic prefix may depend on a numerology. It should be understood that reference to a first numerology (e.g., μ=0) associated with a first subcarrier spacing (e.g., 15 kHz) may be used interchangeably between subframes and slots.
[0110] In the wireless communications system 100, an electromagnetic (EM) spectrum may be split, based on frequency or wavelength, into various classes, frequency bands, frequency channels, etc. By way of example, the wireless communications system 100 may support one or multiple operating frequency bands, such as frequency range designations FR1 (410 MHz –7.125 GHz) , FR2 (24.25 GHz –52.6 GHz) , FR3 (7.125 GHz –24.25 GHz) , FR4 (52.6 GHz –114.25 GHz) , FR4a or FR4-1 (52.6 GHz –71 GHz) , and FR5 (114.25 GHz –300 GHz) . In some implementations, the network entities 102 and the UEs 104 may perform wireless communications over one or more of the operating frequency bands. In some implementations, FR1 may be used by the network entities 102 and the UEs 104, among other equipment or devices for cellular communications traffic (e.g., control information, data) . In some implementations, FR2 may be used by the network entities 102 and the UEs 104, among other equipment or devices for short-range, high data rate capabilities.
[0111] FR1 may be associated with one or multiple numerologies (e.g., at least three numerologies) . For example, FR1 may be associated with a first numerology (e.g., μ=0) , which includes 15 kHz subcarrier spacing; a second numerology (e.g., μ=1) , which includes 30 kHz subcarrier spacing; and a third numerology (e.g., μ=2) , which includes 60 kHz subcarrier spacing. FR2 may be associated with one or multiple numerologies (e.g., at least 2 numerologies) . For example, FR2 may be associated with a third numerology (e.g., μ=2) , which includes 60 kHz subcarrier spacing; and a fourth numerology (e.g., μ=3) , which includes 120 kHz subcarrier spacing.
[0112] For the purpose of illustration without suggesting any limitations, some embodiments of the present disclosure will be described with reference to the scenario that a UE 104 performs PUSCH transmissions and retransmissions to a network entity 102. It is to be understood that the disclosure described herein may be implemented in various manners other than the ones described below.
[0113] FIG. 1B illustrates an example diagram of CG PUSCH TOs in a period of a CG configuration. As indicated above, to realize the low latency requirement and the big packet size, it has been decided in 3GPP to configure multiple CG PUSCH TOs in a period of a single CG PUSCH configuration. A gNB could configure a parameter N and indicate a single SLIV from a configured time domain resource allocation (TDRA) table, and UE could determine N resource in in each of N consecutive slots per CG period, and each resource has same SLIV in the slot.
[0114] For example, assuming the period of a CG is 5 slots, and N=4, and a SLIV is indicated, the determined N TOs in a CG period could be shown as FIG. 1B.
[0115] For each TO, the corresponding HARQ process number could be determined using following formula.
[0116] · The HPN for the first configured TO can be determined according to:
[0117] HARQ Process ID = [X*floor ( (CURRENT_symbol) / periodicity) ] modulo nrofHARQ-Processes.
[0118] · The HPN of the remaining configured and valid CG PUSCHs in the period is determined by incrementing the HARQ process ID of the preceding PUSCH.
[0119] · A configured CG PUSCH is invalid if the CG PUSCH is dropped due to collision with DL symbol (s) indicated by tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated or SSB.
[0120] So in the above example, the HPNs in the first period include 1, 2, 3, and 4, and the HPNs in the second period include 5, 6, 7, and 8.
[0121] FIG. 2 illustrates an example signaling chart of an example process 200 that supports performing PUSCH retransmissions in accordance with aspects of the present disclosure. For the purpose of discussion, the process 200 will be described with reference to FIG. 1A, and the process 200 may involve the UE 104 and the network entity 102 as shown in FIG. 1A. The network entity 102 may be also referred to as the base station 102.
[0122] As shown in FIG. 2, the UE 104 transmits 201 a plurality of PUSCH transmissions 202 through a plurality of TOs in a period of a CG configuration to the base station 102, and the base station 102 receives the plurality of PUSCH transmissions. The UE 104 determines 204 a plurality of resources for retransmissions of at least some of the PUSCH transmissions. Then, the UE 104 retransmits 206 the at least some of the PUSCH transmissions using the plurality of determined resources, i.e., the UE 104 uses the plurality of determined resources to perform retransmissions 207 of at least some of the PUSCH transmissions to the base station 102. In some embodiments, the number of at least some of the PUSCH transmissions to be retransmitted may be equal to or larger than 2.
[0123] On the base station side, the base station 102 may also determine 205 the plurality of resources for retransmissions of at least some of the PUSCH transmissions, and then receive 208 retransmissions of at least some of the PUSCH transmissions using the plurality of determined resources.
[0124] In some embodiments, the UE 104 may retransmit the at least some of the PUSCH transmissions based on DCI received from the base station 102. A CRC code of the DCI is scrambled by a CS-RNTI of the UE 104.
[0125] How to determine the resources for retransmissions of at least some of the PUSCH transmissions will be described in detail below. For the purpose of illustration without suggesting any limitations, it is assumed that the UE 104 determines M resources for retransmissions of M PUSCH transmissions of the plurality of PUSCH transmissions, where M is an integer lager than 1.
[0126] In the context of the following embodiments, the term “resource” may refer to a time domain resource, and thus the terms “resource” and “time domain resource” can be used interchangeably.
[0127] In some embodiments, the DCI from the base station 102 indicates N resources and M resources for retransmissions of the at least some of the PUSCH transmissions is based on the N resources, where N is an integer greater than 1. For example, the DCI could indicate N resource by an index of a TDRA table, wherein the TDRA table could be determined based on the DCI format of the DCI.
[0128] In some embodiments, the N may be equal to or smaller than M, i.e., the number of resources for retransmission of the at least some of the PUSCH transmissions may be the same as or is larger than N. In this case, the UE 104 can determine all the N resources as the resources for retransmission of the at least some of the PUSCH transmissions.
[0129] If M is less than N, the UE 104 may determine first or last M resources among the N resources as the resources for retransmission of the at least some of the PUSCH transmissions. In other words, only first or last M resources among N resources are used for M CG PUSCH retransmission according to the scheduled order of the M CG PUSCH transmissions. The remaining N-M resources are not used for any PUSCH transmission.
[0130] Fig. 3 illustrates an example diagram that resources for PUSCH retransmissions are determined from resources indicated by DCI, in accordance with aspects of the present disclosure. As shown in FIG. 3, there are 4 PUSCH transmissions in 4 TOs, and 3 PUSCH transmissions (i.e., 1, 3 and 4) should be retransmitted. The DCI could indicate 4 SLIVs, and only the first or last three SLIV are used for the 3 PUSCH retransmissions.
[0131] In the case that M is less than N, the resources for retransmission of the at least some of the PUSCH transmissions determined based on a first bitmap in the DCI. For instance, the bit value 1 (or 0) may indicate the resource is used for retransmission.
[0132] For example, the bitmap is 1011 indicating the first, third and fourth PUSCH transmissions would be retransmitted, then the DCI could indicate four SLIVs, and the first, third and fourth resources are used for the PUSCH retransmissions.
[0133] The bitmap may be a bitmap used for indicate whether at least some of the plurality of PUSCH transmissions are to be retransmitted, which will be described in details later.
[0134] The bitmap may relate to a NDI field and / or a RV field of the DCI, which will be described in details later.
[0135] In some embodiments, the plurality of resources for retransmissions of the at least some of the PUSCH transmissions are in continuous slots and have a same SLIV. For example, the time domain resources for the M CG PUSCH transmissions are M resources in M continuous slots, the DCI could indicate the first slot and the SLIV for first resource, and the resources are the same in M slots.
[0136] For example, the first slot can be indicated by a k2 value in the DCI. If multiple K2 values are indicated, the first K2 value could be used.
[0137] In some embodiments, the DCI indicates the first resource of the plurality of resources for retransmissions of the at least some of the PUSCH transmissions via an index of a TDRA table, wherein each row of the TDRA table comprises one SLIV. The TDRA table could use the TDRA table for DCI detected in a user equipment specific search space (USS) .
[0138] Alternatively, in case of more than one SLIV in an indexed row of the TDRA table, the first resource is determined via a first or last SLIV from the TDRA table. That is, if there are more than one SLIV for the indexed row, the first or last SLIV can be used.
[0139] Fig. 4 illustrates an example diagram that resources for PUSCH retransmissions are in continuous slots and a SLIV is indicated by DCI, in accordance with aspects of the present disclosure. As shown in FIG. 4, there are 4 PUSCH transmissions in 4 TOs, and 3 PUSCH transmissions (i.e., 1, 3 and 4) should be retransmitted. The DCI could indicate 1 SLIV, and then 3 PUSCH transmissions can be transmitted in three continuous slots from the first SLIV.
[0140] So far, determining resources for retransmissions of at least some of the PUSCH transmissions is described. In the following, how to indicate whether at least some of the plurality of PUSCH transmissions are to be retransmitted will be described. It should be understood that the operation order is provided for the purpose of illustration without suggesting any limitations. In some embodiments, the UE may be firstly indicated whether at least some of the plurality of PUSCH transmissions are to be retransmitted and then determine resources for the retransmissions.
[0141] In some embodiments, the DCI comprises a second bitmap to indicate whether at least some of the plurality of PUSCH transmissions are to be retransmitted, and bits of the second bitmap have one-to-one mapping to at least part of the plurality of TOs.
[0142] In some embodiments, the number of bits in the second bitmap may be equal to the number of the plurality of TOs configured for the plurality of CG PUSCH transmissions. For example, there are 4 TOs configured in a period, then there would be 4 bits in the DCI, and if the bits are 0100, it could indicate the PUSCH transmission transmitted in the second TO should be retransmitted.
[0143] In some embodiments, the number of bits in the second bitmap may be equal to the maximum number K of PUSCH transmissions indicated by a TDRA table, and the number of the plurality of configured TOs is denoted as L. Then, only the first / last X bits in the second bitmap indicate the first / last valid / configured PUSCH transmissions should be retransmitted or not, where X can be equal to min {K, L} .
[0144] Specifically, there may be serval cases. K is larger than L, and then first or last L bits in the second bitmap can be used to indicate whether the at least some of the plurality of PUSCH transmissions are to be retransmitted. Alternatively, K is less than L, and then K bits in the second bitmap can be used to indicate whether first or last K PUSCH transmissions of the at least some of the plurality of PUSCH transmissions are to be retransmitted. Alternatively, K is equal to L, and then K bits in the second bitmap can be used to indicate whether the at least some of the plurality of PUSCH transmissions are to be retransmitted.
[0145] FIG. 5 illustrates an example diagram that a bitmap indicates whether a PUSCH transmission is to be retransmitted, in accordance with aspects of the present disclosure. As shown in FIG. 5, there are 4 PUSCH transmissions in 4 TOs. The maximum number of PUSCH transmissions in the TDRA table is 8, there would be 8 bits in the DCI, and then only last 4 bits are valid bits. If the bits are 0000 0100, it could indicate the PUSCH transmission transmitted in the second TO should be retransmitted.
[0146] In some embodiments, the DCI comprises a second bitmap to indicate whether at least some of the plurality of PUSCH transmissions corresponding to HPNs are to be retransmitted, and a number of bits in the second bitmap may be equal to a maximum number of HPNs configured for the CG configuration.
[0147] For example, there are 4 TOs configured in a period, and the maximum number of HPNs for the CG configuration is configured as 16, then there would be 16 bits in the DCI. If the bits are 0000 0100 0000 0000, it could indicate the PUSCH transmission corresponding to HPN #5 should be retransmitted.
[0148] In some embodiments, the second bitmap may relate to an NDI field and / or an RV field of the DCI. For example, the second bitmap may reuse the NDI field and / or RV field of the DCI. In some embodiments, the second bitmap may be the same as the first bitmap.
[0149] It is noted that the DCI should have same size as the same DCI format with CRC scrambled by C-RNTI of the UE 104. One way is to make the bit number of the NDI field or RV field in the DCI equal to the maximum value between {K, HPN number / configured TO number} , where K is the maximum number of PUSCH transmissions indicated by a TDRA table. Another way is to make the total DCI size equal by adding padding bits at the DCI that has a smaller size.
[0150] More specifically, the DCI can be referred to as a first DCI, and the UE 104 may receive a second DCI which has a same format as the first DCI and the second DCI comprises a CRC code scrambled by a C-RNTI of the UE 104. Then, the first DCI can be aligned with the second DCI in size. One way is to add padding bits to the NDI field or the RV field of the first DCI or the second another DCI such that a number of bits in the NDI field or the RV field is equal to a maximum value between X and a number of PUSCH transmissions indicated by a TDRA table of the second DCI, where X is a number of the plurality of TOs in the period of the CG configuration, or X is a maximum number of HPNs for the CG configuration. Another way is to add padding bits to one of the first DCI and the second DCI that has a smaller size.
[0151] Additionally, or alternatively, the DCI could have a new DCI format does not same as the legacy DCI format 0_1 / 0_2 / 0_3 / 0_0. As an example, the new DCI format may be DCI format 0_4.
[0152] In some embodiments, the DCI includes a HPN field to indicate the first HPN that is to be retransmitted. For example, the UE 104 may determine that a CG PUSCH transmission corresponding to an HPN indicated by an HPN field of the DCI is to be retransmitted. Then, the UE 104 may determine that one or more CG PUSCH transmissions corresponding to HPNs larger than the HPN are to be retransmitted. In other words, all the PUSCH transmissions transmitted using HPNs larger than the indicated HPN are to be retransmitted.
[0153] FIG. 6 illustrates an example diagram that PUSCH transmissions corresponding to certain HPNs are to be retransmitted, in accordance with aspects of the present disclosure. As shown in FIG. 6, there are 4 PUSCH transmissions are transmitted, and the corresponding HPNs are 5, 6, 7, and 8. The DCI could indicate a HPN=6, then the UE 104 would retransmit PUSCH transmissions corresponding to HPN 6, 7, and 8.
[0154] In some embodiments, the UE 104 may determine that one or more CG PUSCH transmissions corresponding to a number of HPNs larger than the indicated first HPN are to be retransmitted. The number of HPNs can be indicated by RRC signalling. Additionally, or alternatively, the number of HPNs can also be indicated by the DCI. For example, there are 4 PUSCH transmissions are transmitted, and the corresponding HPNs are 5, 6, 7, and 8. The DCI could indicate a HPN=6, and RRC configures or the DCI indicates the number of retransmission is 2, and then the UE 104 would retransmit PUSCH transmissions corresponding to HPNs 6 and 7.
[0155] So far, indicating whether at least some of the plurality of PUSCH transmissions are to be retransmitted is described. In the following, how to determine RVs for the retransmissions of the at least some of the PUSCH transmissions will be described. It should be understood that the operation order is provided for the purpose of illustration without suggesting any limitations.
[0156] In some embodiments, an RV field of the DCI indicates the RVs for the retransmissions of the at least some of the PUSCH transmissions, and the retransmissions have the same RV. In other words, the number of RV field in the DCI to indicate the RV should be 1, and all the retransmissions have the same RV.
[0157] Alternatively, the number of RV fields of the DCI may equal to the number of the plurality of TOs, and each RV field corresponds to one of the plurality of TOs.
[0158] Alternatively, the number of RV fields of the DCI may be equal to the maximum number of HPNs configured for the CG configuration, and each RV field corresponds to one of the number of HPNs.
[0159] The RV field may comprise 2 bits (e.g., indicating 0 2 3 or 1) or 1bit ( (e.g., indicating 0 or 2) .
[0160] In some embodiments, an RV for a retransmission of the at least some of the PUSCH transmissions is different from an RV for an original transmission of the PUSCH transmission. For example, if an initial transmission uses RV=0, then the retransmission uses RV=2; or if an initial transmission uses RV=2, then the retransmission uses RV=0.
[0161] In some embodiments, the number of RV fields of the DCI may be equal to the maximum the number K of PUSCH transmissions indicated by a TDRA table. Then, first / end X bits indicate the RVs for the first / end X configured / valid PUSCH transmissions, where X= min {K, L} . More specifically, if K is greater than a number L of the plurality of TOs, then first or last L RV fields of the DCI can be used for the retransmissions of the at least some of the PUSCH transmissions. If K is less than L, then K RV fields of the DCI can be used for first or last K retransmissions of the at least some of the PUSCH transmissions. If K is equal to L, then K RV fields of the DCI can be used for the retransmissions of the at least some of the PUSCH transmissions.
[0162] It is noted that the DCI should have same size as the same DCI format with CRC scrambled by C-RNTI of the UE 104. One way is to make the bit number of the RV field equal to the maximum value between {K, HPN number / configured TO number} , where K is the maximum number of PUSCH transmissions indicated by a TDRA table. Another way is to make the total DCI size equal by adding padding bits at the DCI that has a smaller size.
[0163] More specifically, the DCI can be referred to as a first DCI, and the UE 104 may receive a second DCI which has a same format as the first DCI and the second DCI comprises a CRC code scrambled by a C-RNTI of the UE 104. Then, the first DCI can be aligned with the second DCI in size. One way is to add padding bits to the RV field of the first DCI or the second DCI such that a number of bits in the RV field is equal to a maximum value between the number of the plurality of TOs and the maximum number of PUSCH transmissions indicated by a TDRA table of the second DCI. Another way is to add padding bits to the RV field of the first DCI or the second DCI such that the number of bits in the RV field is equal to a maximum value between the number of HPNs and the maximum number of PUSCH transmissions indicated by the TDRA table of the second DCI. A further way is to add padding bits to one of the first DCI and the second DCI that has a smaller size.
[0164] So far, determining RVs for the retransmissions of the at least some of the PUSCH transmissions is described. By using the above methods, retransmissions of multiple CG PUSCH transmissions can be scheduled by DCI from the base station 102.
[0165] In some embodiments, the UE 104 may retransmit the at least some of the PUSCH transmissions based on a timer configured by the base station 102. The timer may be started or re-started after a first or last valid TO of the plurality of TOs. Alternatively, the timer may be started or re-started after a last TO in time domain which is not indicated as unused by the UE 104. Then, if no ACK is received for a HPN in the CG period after the timer expired, the UE 104 can determine that a PUSCH transmission corresponding to the HPN is to be retransmitted.
[0166] For example, the timer can be restarted or started after the first or last configured CG TO, and after the timer expired, if no ACK is received for a HPN in the CG period, then the PUSCH corresponding to the HPN is to be retransmitted. The first or last configured CG TO is a first or last valid TO. Alternatively, the timer can be be restarted or started after the last TO in time domain which is not indicated as unused by the UE in the UCI. After the timer expired, if no ACK is received for a HPN in the CG period, then the PUSCH corresponding to the HPN is to be retransmitted.
[0167] With the embodiments described above, retransmissions of multiple CG PUSCH transmissions in a period of a CG configuration can be scheduled at once, e.g., by DCI or a timer, thereby reducing the latency and signaling overhead for performing multiple CG PUSCH retransmissions.
[0168] FIG. 7 illustrates an example of a device 700 that supports performing PUSCH retransmissions in accordance with aspects of the present disclosure. The device 700 may be an example of a UE 104 as described herein. The device 700 may support wireless communication with one or more network entities 102, UEs 104, or any combination thereof. The device 700 may include components for bi-directional communications including components for transmitting and receiving communications, such as a processor 702, a memory 704, a transceiver 706, and, optionally, an I / O controller 708. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .
[0169] The processor 702, the memory 704, the transceiver 706, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein. For example, the processor 702, the memory 704, the transceiver 706, or various combinations or components thereof may support a method for performing one or more of the operations described herein.
[0170] In some implementations, the processor 702, the memory 704, the transceiver 706, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) . The hardware may include a processor, a digital signal processor (DSP) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure. In some implementations, the processor 702 and the memory 704 coupled with the processor 702 may be configured to perform one or more of the functions described herein (e.g., executing, by the processor 702, instructions stored in the memory 704) .
[0171] For example, the processor 702 may support wireless communication at the device 700 in accordance with examples as disclosed herein. The processor 702 may be configured to operable to support a means for transmitting a plurality of PUSCH transmissions through a plurality of TOs in a period of a CG configuration; a means for determining a plurality of resources for retransmissions of at least some of the PUSCH transmissions; and a means for retransmitting the at least some of the PUSCH transmissions using the plurality of determined resources.
[0172] The processor 702 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof) . In some implementations, the processor 702 may be configured to operate a memory array using a memory controller. In some other implementations, a memory controller may be integrated into the processor 702. The processor 702 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 704) to cause the device 700 to perform various functions of the present disclosure.
[0173] The memory 704 may include random access memory (RAM) and read-only memory (ROM) . The memory 704 may store computer-readable, computer-executable code including instructions that, when executed by the processor 702 cause the device 700 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some implementations, the code may not be directly executable by the processor 702 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some implementations, the memory 704 may include, among other things, a basic I / O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
[0174] The I / O controller 708 may manage input and output signals for the device 700. The I / O controller 708 may also manage peripherals not integrated into the device M02. In some implementations, the I / O controller 708 may represent a physical connection or port to an external peripheral. In some implementations, the I / O controller 708 may utilize an operating system such as or another known operating system. In some implementations, the I / O controller 708 may be implemented as part of a processor, such as the processor 706. In some implementations, a user may interact with the device 700 via the I / O controller 708 or via hardware components controlled by the I / O controller 708.
[0175] In some implementations, the device 700 may include a single antenna 710. However, in some other implementations, the device 700 may have more than one antenna 710 (i.e., multiple antennas) , including multiple antenna panels or antenna arrays, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 706 may communicate bi-directionally, via the one or more antennas 710, wired, or wireless links as described herein. For example, the transceiver 706 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 706 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 710 for transmission, and to demodulate packets received from the one or more antennas 710. The transceiver 706 may include one or more transmit chains, one or more receive chains, or a combination thereof.
[0176] A transmit chain may be configured to generate and transmit signals (e.g., control information, data, packets) . The transmit chain may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium. The at least one modulator may be configured to support one or more techniques such as amplitude modulation (AM) , frequency modulation (FM) , or digital modulation schemes like phase-shift keying (PSK) or quadrature amplitude modulation (QAM) . The transmit chain may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over the wireless medium. The transmit chain may also include one or more antennas 710 for transmitting the amplified signal into the air or wireless medium.
[0177] A receive chain may be configured to receive signals (e.g., control information, data, packets) over a wireless medium. For example, the receive chain may include one or more antennas 710 for receive the signal over the air or wireless medium. The receive chain may include at least one amplifier (e.g., a low-noise amplifier (LNA) ) configured to amplify the received signal. The receive chain may include at least one demodulator configured to demodulate the receive signal and obtain the transmitted data by reversing the modulation technique applied during transmission of the signal. The receive chain may include at least one decoder for decoding the processing the demodulated signal to receive the transmitted data.
[0178] FIG. 8 illustrates an example of another device 800 that supports performing PUSCH retransmissions in accordance with aspects of the present disclosure. The device 800 may be an example of a base station 102 as described herein. The device 800 may support wireless communication with one or more network entities 102, UEs 104, or any combination thereof. The device 800 may include components for bi-directional communications including components for transmitting and receiving communications, such as a processor 802, a memory 804, a transceiver 806, and, optionally, an I / O controller 808. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .
[0179] The processor 802, the memory 804, the transceiver 806, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein. For example, the processor 802, the memory 804, the transceiver 806, or various combinations or components thereof may support a method for performing one or more of the operations described herein.
[0180] In some implementations, the processor 802, the memory 804, the transceiver 806, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) . The hardware may include a processor, a digital signal processor (DSP) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure. In some implementations, the processor 802 and the memory 804 coupled with the processor 802 may be configured to perform one or more of the functions described herein (e.g., executing, by the processor 802, instructions stored in the memory 804) .
[0181] For example, the processor 802 may support wireless communication at the device 800 in accordance with examples as disclosed herein. The processor 802 may be configured to operable to support a means for receiving a plurality of PUSCH transmissions through a plurality of TOs in a period of a CG configuration; a means for determining a plurality of resources for retransmissions of at least some of the PUSCH transmissions; and a means for receiving the retransmissions of the at least some of the PUSCH transmissions using the plurality of determined resources.
[0182] The processor 802 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof) . In some implementations, the processor 802 may be configured to operate a memory array using a memory controller. In some other implementations, a memory controller may be integrated into the processor 802. The processor 802 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 804) to cause the device 800 to perform various functions of the present disclosure.
[0183] The memory 804 may include random access memory (RAM) and read-only memory (ROM) . The memory 804 may store computer-readable, computer-executable code including instructions that, when executed by the processor 802 cause the device 800 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some implementations, the code may not be directly executable by the processor 802 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some implementations, the memory 804 may include, among other things, a basic I / O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
[0184] The I / O controller 808 may manage input and output signals for the device 800. The I / O controller 808 may also manage peripherals not integrated into the device M02. In some implementations, the I / O controller 808 may represent a physical connection or port to an external peripheral. In some implementations, the I / O controller 808 may utilize an operating system such as or another known operating system. In some implementations, the I / O controller 808 may be implemented as part of a processor, such as the processor 806. In some implementations, a user may interact with the device 800 via the I / O controller 808 or via hardware components controlled by the I / O controller 808.
[0185] In some implementations, the device 800 may include a single antenna 810. However, in some other implementations, the device 800 may have more than one antenna 810 (i.e., multiple antennas) , including multiple antenna panels or antenna arrays, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 806 may communicate bi-directionally, via the one or more antennas 810, wired, or wireless links as described herein. For example, the transceiver 806 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 806 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 810 for transmission, and to demodulate packets received from the one or more antennas 810. The transceiver 806 may include one or more transmit chains, one or more receive chains, or a combination thereof.
[0186] A transmit chain may be configured to generate and transmit signals (e.g., control information, data, packets) . The transmit chain may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium. The at least one modulator may be configured to support one or more techniques such as amplitude modulation (AM) , frequency modulation (FM) , or digital modulation schemes like phase-shift keying (PSK) or quadrature amplitude modulation (QAM) . The transmit chain may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over the wireless medium. The transmit chain may also include one or more antennas 810 for transmitting the amplified signal into the air or wireless medium.
[0187] A receive chain may be configured to receive signals (e.g., control information, data, packets) over a wireless medium. For example, the receive chain may include one or more antennas 810 for receive the signal over the air or wireless medium. The receive chain may include at least one amplifier (e.g., a low-noise amplifier (LNA) ) configured to amplify the received signal. The receive chain may include at least one demodulator configured to demodulate the receive signal and obtain the transmitted data by reversing the modulation technique applied during transmission of the signal. The receive chain may include at least one decoder for decoding the processing the demodulated signal to receive the transmitted data.
[0188] FIG. 9 illustrates an example of a processor 900 that supports performing PUSCH retransmissions in accordance with aspects of the present disclosure. The processor 900 may be an example of a processor configured to perform various operations in accordance with examples as described herein. The processor 900 may include a controller 902 configured to perform various operations in accordance with examples as described herein. The processor 900 may optionally include at least one memory 904, such as L1 / L2 / L3 cache. Additionally, or alternatively, the processor 900 may optionally include one or more arithmetic-logic units (ALUs) 900. One or more of these components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .
[0189] The processor 900 may be a processor chipset and include a protocol stack (e.g., a software stack) executed by the processor chipset to perform various operations (e.g., receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) in accordance with examples as described herein. The processor chipset may include one or more cores, one or more caches (e.g., memory local to or included in the processor chipset (e.g., the processor 900) or other memory (e.g., random access memory (RAM) , read-only memory (ROM) , dynamic RAM (DRAM) , synchronous dynamic RAM (SDRAM) , static RAM (SRAM) , ferroelectric RAM (FeRAM) , magnetic RAM (MRAM) , resistive RAM (RRAM) , flash memory, phase change memory (PCM) , and others) .
[0190] The controller 902 may be configured to manage and coordinate various operations (e.g., signaling, receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) of the processor 900 to cause the processor 900 to support various operations in accordance with examples as described herein. For example, the controller 902 may operate as a control unit of the processor 900, generating control signals that manage the operation of various components of the processor 900. These control signals include enabling or disabling functional units, selecting data paths, initiating memory access, and coordinating timing of operations.
[0191] The controller 902 may be configured to fetch (e.g., obtain, retrieve, receive) instructions from the memory 904 and determine subsequent instruction (s) to be executed to cause the processor 900 to support various operations in accordance with examples as described herein. The controller 902 may be configured to track memory address of instructions associated with the memory 904. The controller 902 may be configured to decode instructions to determine the operation to be performed and the operands involved. For example, the controller 902 may be configured to interpret the instruction and determine control signals to be output to other components of the processor 900 to cause the processor 900 to support various operations in accordance with examples as described herein. Additionally, or alternatively, the controller 902 may be configured to manage flow of data within the processor 900. The controller 902 may be configured to control transfer of data between registers, arithmetic logic units (ALUs) , and other functional units of the processor 900.
[0192] The memory 904 may include one or more caches (e.g., memory local to or included in the processor 900 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc. In some implementation, the memory 904 may reside within or on a processor chipset (e.g., local to the processor 900) . In some other implementations, the memory 904 may reside external to the processor chipset (e.g., remote to the processor 900) .
[0193] The memory 904 may store computer-readable, computer-executable code including instructions that, when executed by the processor 900, cause the processor 900 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. The controller 902 and / or the processor 900 may be configured to execute computer-readable instructions stored in the memory 904 to cause the processor 900 to perform various functions. For example, the processor 900 and / or the controller 902 may be coupled with or to the memory 904, and the processor 900, the controller 902, and the memory 904 may be configured to perform various functions described herein. In some examples, the processor 900 may include multiple processors and the memory 904 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions herein.
[0194] The one or more ALUs 900 may be configured to support various operations in accordance with examples as described herein. In some implementation, the one or more ALUs 900 may reside within or on a processor chipset (e.g., the processor 900) . In some other implementations, the one or more ALUs 900 may reside external to the processor chipset (e.g., the processor 900) . One or more ALUs 900 may perform one or more computations such as addition, subtraction, multiplication, and division on data. For example, one or more ALUs 900 may receive input operands and an operation code, which determines an operation to be executed. One or more ALUs 900 be configured with a variety of logical and arithmetic circuits, including adders, subtractors, shifters, and logic gates, to process and manipulate the data according to the operation. Additionally, or alternatively, the one or more ALUs 900 may support logical operations such as AND, OR, exclusive-OR (XOR) , not-OR (NOR) , and not-AND (NAND) , enabling the one or more ALUs 900 to handle conditional operations, comparisons, and bitwise operations.
[0195] The processor 900 may support wireless communication in accordance with examples as disclosed herein. The processor 900 may be configured to or operable to support a means for transmitting a plurality of PUSCH transmissions through a plurality of TOs in a period of a CG configuration; a means for determining a plurality of resources for retransmissions of at least some of the PUSCH transmissions; and a means for retransmitting the at least some of the PUSCH transmissions using the plurality of determined resources.
[0196] FIG. 10 illustrates an example of another processor 1000 that supports performing PUSCH retransmissions in accordance with aspects of the present disclosure. The processor 1000 may be an example of a processor configured to perform various operations in accordance with examples as described herein. The processor 1000 may include a controller 1002 configured to perform various operations in accordance with examples as described herein. The processor 1000 may optionally include at least one memory 1004, such as L1 / L2 / L3 cache. Additionally, or alternatively, the processor 1000 may optionally include one or more arithmetic-logic units (ALUs) 1000. One or more of these components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .
[0197] The processor 1000 may be a processor chipset and include a protocol stack (e.g., a software stack) executed by the processor chipset to perform various operations (e.g., receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) in accordance with examples as described herein. The processor chipset may include one or more cores, one or more caches (e.g., memory local to or included in the processor chipset (e.g., the processor 1000) or other memory (e.g., random access memory (RAM) , read-only memory (ROM) , dynamic RAM (DRAM) , synchronous dynamic RAM (SDRAM) , static RAM (SRAM) , ferroelectric RAM (FeRAM) , magnetic RAM (MRAM) , resistive RAM (RRAM) , flash memory, phase change memory (PCM) , and others) .
[0198] The controller 1002 may be configured to manage and coordinate various operations (e.g., signaling, receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) of the processor 1000 to cause the processor 1000 to support various operations in accordance with examples as described herein. For example, the controller 1002 may operate as a control unit of the processor 1000, generating control signals that manage the operation of various components of the processor 1000. These control signals include enabling or disabling functional units, selecting data paths, initiating memory access, and coordinating timing of operations.
[0199] The controller 1002 may be configured to fetch (e.g., obtain, retrieve, receive) instructions from the memory 1004 and determine subsequent instruction (s) to be executed to cause the processor 1000 to support various operations in accordance with examples as described herein. The controller 1002 may be configured to track memory address of instructions associated with the memory 1004. The controller 1002 may be configured to decode instructions to determine the operation to be performed and the operands involved. For example, the controller 1002 may be configured to interpret the instruction and determine control signals to be output to other components of the processor 1000 to cause the processor 1000 to support various operations in accordance with examples as described herein. Additionally, or alternatively, the controller 1002 may be configured to manage flow of data within the processor 1000. The controller 1002 may be configured to control transfer of data between registers, arithmetic logic units (ALUs) , and other functional units of the processor 1000.
[0200] The memory 1004 may include one or more caches (e.g., memory local to or included in the processor 1000 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc. In some implementation, the memory 1004 may reside within or on a processor chipset (e.g., local to the processor 1000) . In some other implementations, the memory 1004 may reside external to the processor chipset (e.g., remote to the processor 1000) .
[0201] The memory 1004 may store computer-readable, computer-executable code including instructions that, when executed by the processor 1000, cause the processor 1000 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. The controller 1002 and / or the processor 1000 may be configured to execute computer-readable instructions stored in the memory 1004 to cause the processor 1000 to perform various functions. For example, the processor 1000 and / or the controller 1002 may be coupled with or to the memory 1004, and the processor 1000, the controller 1002, and the memory 1004 may be configured to perform various functions described herein. In some examples, the processor 1000 may include multiple processors and the memory 1004 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions herein.
[0202] The one or more ALUs 1000 may be configured to support various operations in accordance with examples as described herein. In some implementation, the one or more ALUs 1000 may reside within or on a processor chipset (e.g., the processor 1000) . In some other implementations, the one or more ALUs 1000 may reside external to the processor chipset (e.g., the processor 1000) . One or more ALUs 1000 may perform one or more computations such as addition, subtraction, multiplication, and division on data. For example, one or more ALUs 1000 may receive input operands and an operation code, which determines an operation to be executed. One or more ALUs 1000 be configured with a variety of logical and arithmetic circuits, including adders, subtractors, shifters, and logic gates, to process and manipulate the data according to the operation. Additionally, or alternatively, the one or more ALUs 1000 may support logical operations such as AND, OR, exclusive-OR (XOR) , not-OR (NOR) , and not-AND (NAND) , enabling the one or more ALUs 1000 to handle conditional operations, comparisons, and bitwise operations.
[0203] The processor 1000 may support wireless communication in accordance with examples as disclosed herein. The processor 1000 may be configured to or operable to support a means for receiving a plurality of PUSCH transmissions through a plurality of TOs in a period of a CG configuration; a means for determining a plurality of resources for retransmissions of at least some of the PUSCH transmissions; and a means for receiving the retransmissions of the at least some of the PUSCH transmissions using the plurality of determined resources.
[0204] FIG. 11 illustrates a flowchart of a method 1100 that supports performing PUSCH retransmissions in accordance with aspects of the present disclosure. The operations of the method 1100 may be implemented by a device or its components as described herein. For example, the operations of the method 1100 may be performed by the UE 104 as described herein. In some implementations, the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
[0205] At block 1105, the method may include transmitting, to a base station, a plurality of PUSCH transmissions through a plurality of TOs in a period of a CG configuration. The operations of transmitting the plurality of PUSCH transmissions may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of transmitting the plurality of PUSCH transmissions may be performed by a device as described with reference to FIG. 1A.
[0206] At block 1110, the method may include determining a plurality of resources for retransmissions of at least some of the PUSCH transmissions. The operations of determining the plurality of resources for retransmissions may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of determining the plurality of resources for retransmissions may be performed by a device as described with reference to FIG. 1A.
[0207] At block 1115, the method may include retransmitting, to the base station, the at least some of the PUSCH transmissions using the plurality of determined resources. The operations of retransmitting the at least some of the PUSCH transmissions may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of retransmitting the at least some of the PUSCH transmissions may be performed by a device as described with reference to FIG. 1A.
[0208] In some embodiments, the method 1100 may further include retransmitting the at least some of the PUSCH transmissions based on DCI received from the base station. In some embodiments, a CRC code of the DCI may be scrambled by a configured scheduling-radio network temporary identifier (CS-RNTI) of the user equipment.
[0209] In some embodiments, the DCI may indicate N resources by an index of a TDRA table, N being an integer greater than 1, and the plurality of resources for retransmission of the at least some of the PUSCH transmissions maybe based on the N resources. In some embodiments, the number of resources for retransmission of the at least some of the PUSCH transmissions may be the same as or is larger than N.
[0210] In some embodiments, assuming the number of resources for retransmission of the at least some of the PUSCH transmissions is M and M is less than N, the method 1100 may further include determining first or last M resources among the N resources as the resources for retransmission of the at least some of the PUSCH transmissions. Additionally, or alternatively, the resources for retransmission of the at least some of the PUSCH transmissions may be determined based on a first bitmap in the DCI.
[0211] In some embodiments, the plurality of resources for retransmissions of the at least some of the PUSCH transmissions may be in continuous slots and have a same SLIV. In some embodiments, the DCI may indicate a first slot and the SLIV for a first resource of the plurality of resources for retransmissions of the at least some of the PUSCH transmissions.
[0212] In some embodiments, the first slot may be indicated by one of the following in the DCI: a single K2 value, in case only one K2 value is indicated in the DCI; or a first K2 value, in case more than one K2 value is indicated in the DCI, wherein a K2 value is used to indicate the number of slots between a slot where the DCI is received and the first slot.
[0213] In some embodiments, the DCI may indicate the first resource of the plurality of resources for retransmissions of the at least some of the PUSCH transmissions via an index of a TDRA table, wherein each row of the TDRA table comprises one SLIV. Alternatively, in case of more than one SLIV in an indexed row of the TDRA table, the method 1100 may further include determining the first resource via a first or last SLIV from the TDRA table.
[0214] In some embodiments, the DCI may comprise a second bitmap to indicate whether at least some of the plurality of PUSCH transmissions are to be retransmitted, and bits of the second bitmap may have one-to-one mapping to at least part of the plurality of TOs. In some embodiments, a number of bits in the second bitmap may be equal to a number of the plurality of TOs. Alternatively, a number of bits in the second bitmap may be equal to a maximum number K of PUSCH transmissions indicated by a TDRA table.
[0215] In some embodiments, K is larger than a number L of the plurality of TOs, and first or last L bits in the second bitmap may be used to indicate whether the at least some of the plurality of PUSCH transmissions are to be retransmitted. Alternatively, K is less than L, and K bits in the second bitmap may be used to indicate whether first or last K PUSCH transmissions of the at least some of the plurality of PUSCH transmissions are to be retransmitted. Alternatively, K is equal to L, and K bits in the second bitmap may be used to indicate whether the at least some of the plurality of PUSCH transmissions are to be retransmitted.
[0216] In some embodiments, the DCI may comprise a second bitmap to indicate whether at least some of the plurality of PUSCH transmissions corresponding to HPNs are to be retransmitted, and a number of bits in the second bitmap may be equal to a maximum number of HPNs configured for the CG configuration. In some embodiments, the second bitmap may relate to an NDI field and / or an RV field of the DCI.
[0217] In some embodiments, the DCI is a first DCI, and the method 1100 may further include receiving a second DCI which has a same format as the first DCI and the second DCI comprises a CRC code scrambled by a C-RNTI of the user equipment, and the first DCI may be aligned with the second DCI in size by one of the following: adding padding bits to the NDI field or the RV field of the first DCI or the second another DCI such that a number of bits in the NDI field or the RV field is equal to a maximum value between X and a number of PUSCH transmissions indicated by a TDRA table of the second DCI, wherein X is a number of the plurality of TOs in the period of the CG configuration, or X is a maximum number of HPNs for the CG configuration; or adding padding bits to one of the first DCI and the second DCI that has a smaller size.
[0218] In some embodiments, the method 1100 may further include determining that a CG PUSCH transmission corresponding to an HPN indicated by an HPN field of the DCI is to be retransmitted; and determining that one or more CG PUSCH transmissions corresponding to HPNs larger than the HPN are to be retransmitted. Additionally, or alternatively, the method 1100 may include determining that one or more CG PUSCH transmissions corresponding to a number of HPNs larger than the HPN are to be retransmitted, wherein the number of HPNs is indicated by RRC signaling or the DCI.
[0219] In some embodiments, the method 1100 may further include determining RVs for the retransmissions of the at least some of the PUSCH transmissions. In some embodiments, an RV field of the DCI may indicate the RVs, and the retransmissions of the at least some of the PUSCH transmissions may have the same RV. Alternatively, a number of RV fields of the DCI may be equal to a number of the plurality of TOs, and each RV field may correspond to one of the plurality of TOs. Alternatively, the number of RV fields of the DCI may be equal to a maximum number of HPNs configured for the CG configuration, and each RV field corresponds to one of the number of HPNs. A RV field may comprise 2 bits or 1bit.
[0220] In some embodiments, an RV for a retransmission of the at least some of the PUSCH transmissions may be different from an RV for an original transmission of the PUSCH transmission.
[0221] In some embodiments, a number of RV fields of the DCI may be equal to a maximum the number K of PUSCH transmissions indicated by a TDRA table. In some embodiments, K is greater than a number L of the plurality of TOs, and first or last L RV fields of the DCI may be used for the retransmissions of the at least some of the PUSCH transmissions. Alternatively, K is less than L, and K RV fields of the DCI may be used for first or last K retransmissions of the at least some of the PUSCH transmissions. Alternatively, K is equal to L, and K RV fields of the DCI may be used for the retransmissions of the at least some of the PUSCH transmissions.
[0222] In some embodiments, the DCI is a first DCI, and the method 1100 may further include receiving a second DCI which has a same format as the first DCI and the second DCI comprises a CRC code scrambled by a C-RNTI of the UE, and the first DCI may be aligned with the second DCI in size by one of the following: adding padding bits to the RV field of the first DCI or the second DCI such that a number of bits in the RV field is equal to a maximum value between the number of the plurality of TOs and the maximum number of PUSCH transmissions indicated by a TDRA table of the second DCI; adding padding bits to the RV field of the first DCI or the second DCI such that the number of bits in the RV field is equal to a maximum value between the number of HPNs and the maximum number of PUSCH transmissions indicated by the TDRA table of the second DCI; or adding padding bits to one of the first DCI and the second DCI that has a smaller size.
[0223] In some embodiments, the method 1100 may further include retransmitting the at least some of the PUSCH transmissions based on a timer configured by the base station. In some embodiments, the timer may be started or re-started after a first or last valid TO of the plurality of TOs. Additionally, or alternatively, the timer may be started or re-started after a last TO in time domain which is not indicated as unused by the user equipment.
[0224] In some embodiments, the method 1100 may further include: in case no ACK is received for a HPN in the CG period after the timer expired, determining that a PUSCH transmission corresponding to the HPN is to be retransmitted.
[0225] FIG. 12 illustrates a flowchart of a method 1200 that supports performing PUSCH retransmissions in accordance with aspects of the present disclosure. The operations of the method 1200 may be implemented by a device or its components as described herein. For example, the operations of the method 1200 may be performed by the base station 102 as described herein. In some implementations, the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
[0226] At block 1205, the method may include receiving, from a user equipment, a plurality of PUSCH transmissions through a plurality of TOs in a period of a CG configuration. The operations of receiving the plurality of PUSCH transmissions may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of receiving the plurality of PUSCH transmissions may be performed by a device as described with reference to FIG. 1A.
[0227] At block 1210, the method may include determining a plurality of resources for retransmissions of at least some of the PUSCH transmissions. The operations of determining the plurality of resources for retransmissions may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of determining the plurality of resources for retransmissions may be performed by a device as described with reference to FIG. 1A.
[0228] At block 1215, the method may include receiving, from the user equipment, the retransmissions of the at least some of the PUSCH transmissions using the plurality of determined resources. The operations of receiving the retransmissions of the at least some of the PUSCH transmissions may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of receiving the retransmissions of the at least some of the PUSCH transmissions may be performed by a device as described with reference to FIG. 1A.
[0229] In some embodiments, the method 1200 may further include receiving the at least some of the PUSCH transmissions based on DCI. In some embodiments, a CRC code of the DCI may be scrambled by a configured scheduling-radio network temporary identifier (CS-RNTI) of the user equipment.
[0230] In some embodiments, the DCI may indicate N resources by an index of a TDRA table, N being an integer greater than 1, and the plurality of resources for retransmission of the at least some of the PUSCH transmissions maybe based on the N resources. In some embodiments, the number of resources for retransmission of the at least some of the PUSCH transmissions may be the same as or is larger than N.
[0231] In some embodiments, assuming the number of resources for retransmission of the at least some of the PUSCH transmissions is M and M is less than N, the method 1200 may further include determining first or last M resources among the N resources as the resources for retransmission of the at least some of the PUSCH transmissions. Additionally, or alternatively, the resources for retransmission of the at least some of the PUSCH transmissions may be determined based on a first bitmap in the DCI.
[0232] In some embodiments, the plurality of resources for retransmissions of the at least some of the PUSCH transmissions may be in continuous slots and have a same SLIV. In some embodiments, the DCI may indicate a first slot and the SLIV for a first resource of the plurality of resources for retransmissions of the at least some of the PUSCH transmissions.
[0233] In some embodiments, the first slot may be indicated by one of the following in the DCI: a single K2 value, in case only one K2 value is indicated in the DCI; or a first K2 value, in case more than one K2 value is indicated in the DCI, wherein a K2 value is used to indicate the number of slots between a slot where the DCI is received and the first slot.
[0234] In some embodiments, the DCI may indicate the first resource of the plurality of resources for retransmissions of the at least some of the PUSCH transmissions via an index of a TDRA table, wherein each row of the TDRA table comprises one SLIV. Alternatively, in case of more than one SLIV in an indexed row of the TDRA table, the method 1200 may further include determining the first resource via a first or last SLIV from the TDRA table.
[0235] In some embodiments, the DCI may comprise a second bitmap to indicate whether at least some of the plurality of PUSCH transmissions are to be retransmitted, and bits of the second bitmap may have one-to-one mapping to at least part of the plurality of TOs. In some embodiments, a number of bits in the second bitmap may be equal to a number of the plurality of TOs. Alternatively, a number of bits in the second bitmap may be equal to a maximum number K of PUSCH transmissions indicated by a TDRA table.
[0236] In some embodiments, K is larger than a number L of the plurality of TOs, and first or last L bits in the second bitmap may be used to indicate whether the at least some of the plurality of PUSCH transmissions are to be retransmitted. Alternatively, K is less than L, and K bits in the second bitmap may be used to indicate whether first or last K PUSCH transmissions of the at least some of the plurality of PUSCH transmissions are to be retransmitted. Alternatively, K is equal to L, and K bits in the second bitmap may be used to indicate whether the at least some of the plurality of PUSCH transmissions are to be retransmitted.
[0237] In some embodiments, the DCI may comprise a second bitmap to indicate whether at least some of the plurality of PUSCH transmissions corresponding to HPNs are to be retransmitted, and a number of bits in the second bitmap may be equal to a maximum number of HPNs configured for the CG configuration. In some embodiments, the second bitmap may relate to an NDI field and / or an RV field of the DCI.
[0238] In some embodiments, the DCI is a first DCI, and the method 1200 may further include transmitting a second DCI which has a same format as the first DCI and the second DCI comprises a CRC code scrambled by a C-RNTI of the user equipment, and the first DCI may be aligned with the second DCI in size by one of the following: adding padding bits to the NDI field or the RV field of the first DCI or the second another DCI such that a number of bits in the NDI field or the RV field is equal to a maximum value between X and a number of PUSCH transmissions indicated by a TDRA table of the second DCI, wherein X is a number of the plurality of TOs in the period of the CG configuration, or X is a maximum number of HPNs for the CG configuration; or adding padding bits to one of the first DCI and the second DCI that has a smaller size.
[0239] In some embodiments, the method 1200 may further include receiving a retransmission of a CG PUSCH transmission corresponding to an HPN indicated by an HPN field of the DCI; and receiving retransmissions of one or more CG PUSCH transmissions corresponding to HPNs larger than the HPN. Additionally, or alternatively, the method 1200 may include receiving one or more CG PUSCH transmissions corresponding to a number of HPNs larger than the HPN are to be retransmitted, wherein the number of HPNs is indicated by RRC signaling or the DCI.
[0240] In some embodiments, the method 1200 may further include determining RVs for the retransmissions of the at least some of the PUSCH transmissions. In some embodiments, an RV field of the DCI may indicate the RVs, and the retransmissions of the at least some of the PUSCH transmissions may have the same RV. Alternatively, a number of RV fields of the DCI may be equal to a number of the plurality of TOs, and each RV field may correspond to one of the plurality of TOs. Alternatively, the number of RV fields of the DCI may be equal to a maximum number of HPNs configured for the CG configuration, and each RV field corresponds to one of the number of HPNs. A RV field may comprise 2 bits or 1bit.
[0241] In some embodiments, an RV for a retransmission of the at least some of the PUSCH transmissions may be different from an RV for an original transmission of the PUSCH transmission.
[0242] In some embodiments, a number of RV fields of the DCI may be equal to a maximum the number K of PUSCH transmissions indicated by a TDRA table. In some embodiments, K is greater than a number L of the plurality of TOs, and first or last L RV fields of the DCI may be used for the retransmissions of the at least some of the PUSCH transmissions. Alternatively, K is less than L, and K RV fields of the DCI may be used for first or last K retransmissions of the at least some of the PUSCH transmissions. Alternatively, K is equal to L, and K RV fields of the DCI may be used for the retransmissions of the at least some of the PUSCH transmissions.
[0243] In some embodiments, the DCI is a first DCI, and the method 1200 may further include transmitting a second DCI which has a same format as the first DCI and the second DCI comprises a CRC code scrambled by a C-RNTI of the UE, and the first DCI may be aligned with the second DCI in size by one of the following: adding padding bits to the RV field of the first DCI or the second DCI such that a number of bits in the RV field is equal to a maximum value between the number of the plurality of TOs and the maximum number of PUSCH transmissions indicated by a TDRA table of the second DCI; adding padding bits to the RV field of the first DCI or the second DCI such that the number of bits in the RV field is equal to a maximum value between the number of HPNs and the maximum number of PUSCH transmissions indicated by the TDRA table of the second DCI; or adding padding bits to one of the first DCI and the second DCI that has a smaller size.
[0244] In some embodiments, the method 1200 may further include configuring a timer for retransmissions of the at least some of the PUSCH transmissions; and receiving the retransmissions based on the timer. In some embodiments, the timer may be started or re-started after a first or last valid TO of the plurality of TOs. Additionally, or alternatively, the timer may be started or re-started after a last TO in time domain which is not indicated as unused by the user equipment.
[0245] In some embodiments, the method 1200 may further include: receiving a retransmission of a PUSCH transmission corresponding to an HPN after the timer expired, wherein no ACK for the PUSCH transmission corresponding to the HPN is transmitted in the CG period.
[0246] It should be noted that the methods described herein describes possible implementations, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible. Further, aspects from two or more of the methods may be combined.
[0247] The various illustrative blocks and components described in connection with the disclosure herein may be implemented or performed with a general-purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any processor, controller, microcontroller, or state machine. A 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 in conjunction with a DSP core, or any other such configuration.
[0248] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
[0249] Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer. By way of example, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM) , flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor.
[0250] As used herein, including in the claims, an article “a” before an element is unrestricted and understood to refer to “at least one” of those elements or “one or more” of those elements. The terms “a, ” “at least one, ” “one or more, ” and “at least one of one or more” may be interchangeable. As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of” or “one or more of”or “one or both of” ) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) . Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on. Further, as used herein, including in the claims, a “set” may include one or more elements.
[0251] The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1.A user equipment, comprising:a processor; anda transceiver coupled to the processor,wherein the processor is configured to:transmit to a base station, via the transceiver, a plurality of physical uplink shared channel (PUSCH) transmissions through a plurality of transmission occasions (TOs) in a period of a configured grant (CG) configuration;determine a plurality of resources for retransmissions of at least some of the PUSCH transmissions; andretransmit to the base station, via the transceiver, the at least some of the PUSCH transmissions using the plurality of determined resources.2.The user equipment of claim 1, wherein the processor is further configured to:retransmit the at least some of the PUSCH transmissions based on downlink control information (DCI) received from the base station.3.The user equipment of claim 1, wherein the processor is further configured to:retransmit the at least some of the PUSCH transmissions based on a timer configured by the base station.4.The user equipment of claim 2, wherein the DCI indicates N resources by an index of a time domain resource allocation (TDRA) table, N being an integer greater than 1, and the plurality of resources for retransmission of the at least some of the PUSCH transmissions is based on the N resources.5.The user equipment of claim 4, wherein the number of resources for retransmission of the at least some of the PUSCH transmissions is the same as or is larger than N.6.The user equipment of claim 4, wherein assuming the number of resources for retransmission of the at least some of the PUSCH transmissions is M and M is less than N,the processor is further configured to determine first or last M resources among the N resources as the resources for retransmission of the at least some of the PUSCH transmissions; orthe resources for retransmission of the at least some of the PUSCH transmissions determined based on a first bitmap in the DCI.7.The user equipment of claim 2, wherein the plurality of resources for retransmissions of the at least some of the PUSCH transmissions are in continuous slots and have a same start and length indicator value (SLIV) .8.The user equipment of claim 7, wherein the DCI indicates a first slot and the SLIV for a first resource of the plurality of resources for retransmissions of the at least some of the PUSCH transmissions.9.The user equipment of claim 2, wherein the DCI comprises a second bitmap to indicate whether at least some of the plurality of PUSCH transmissions are to be retransmitted, and bits of the second bitmap have one-to-one mapping to at least part of the plurality of TOs.10.The user equipment of claim 9, wherein a number of bits in the second bitmap is equal to a maximum number K of PUSCH transmissions indicated by a TDRA table.11.The user equipment of claim 10, wherein:K is larger than a number L of the plurality of TOs, and first or last L bits in the second bitmap are used to indicate whether the at least some of the plurality of PUSCH transmissions are to be retransmitted;K is less than L, and K bits in the second bitmap are used to indicate whether first or last K PUSCH transmissions of the at least some of the plurality of PUSCH transmissions are to be retransmitted; orK is equal to L, and K bits in the second bitmap are used to indicate whether the at least some of the plurality of PUSCH transmissions are to be retransmitted.12.The user equipment of claim 2, wherein the DCI comprises a second bitmap to indicate whether at least some of the plurality of PUSCH transmissions corresponding to hybrid automatic repeat request (HARQ) process numbers (HPNs) are to be retransmitted, and a number of bits in the second bitmap is equal to a maximum number of HPNs configured for the CG configuration.13.The user equipment of any of claim 9-12, wherein the second bitmap relates to a new data indicator (NDI) field and / or a redundant version (RV) field of the DCI.14.The user equipment of claim 13, wherein the DCI is a first DCI, and the processer is further configured to receive a second DCI which has a same format as the first DCI and the second DCI comprises a CRC code scrambled by a cell-radio network temporary identifier (C-RNTI) of the user equipment, and wherein the first DCI is aligned with the second DCI in size by one of the following:adding padding bits to the NDI field or the RV field of the first DCI or the second another DCI such that a number of bits in the NDI field or the RV field is equal to a maximum value between X and a number of PUSCH transmissions indicated by a TDRA table of the second DCI, wherein X is a number of the plurality of TOs in the period of the CG configuration, or X is a maximum number of HPNs for the CG configuration; oradding padding bits to one of the first DCI and the second DCI that has a smaller size.15.The user equipment of claim 2, wherein the processor is further configured to:determine RVs for the retransmissions of the at least some of the PUSCH transmissions.16.The user equipment of claim 15, wherein an RV for a retransmission of the at least some of the PUSCH transmissions is different from an RV for an original transmission of the PUSCH transmission.17.The user equipment of claim 3, wherein:the timer is started or re-started after a first or last valid TO of the plurality of TOs; orthe timer is started or re-started after a last TO in time domain which is not indicated as unused by the user equipment.18.A base station, comprising:a processor; anda transceiver coupled to the processor,wherein the processor is configured to:receive from a user equipment, via the transceiver, a plurality of physical uplink shared channel (PUSCH) transmissions through a plurality of transmission occasions (TOs) in a period of a configured grant (CG) configuration;determine a plurality of resources for retransmissions of at least some of the PUSCH transmissions; andreceive from the user equipment, via the transceiver, the retransmissions of the at least some of the PUSCH transmissions using the plurality of determined resources.19.A method performed by a user equipment, comprising:transmit, to a base station, a plurality of physical uplink shared channel (PUSCH) transmissions through a plurality of transmission occasions (TOs) in a period of a configured grant (CG) configuration;determine a plurality of resources for retransmissions of at least some of the PUSCH transmissions; andretransmit, to the base station, the at least some of the PUSCH transmissions using the plurality of determined resources.20.A method performed by a base station, comprising:receive, from a user equipment, a plurality of physical uplink shared channel (PUSCH) transmissions through a plurality of transmission occasions (TOs) in a period of a configured grant (CG) configuration;determine a plurality of resources for retransmissions of at least some of the PUSCH transmissions; andreceive, from the user equipment, the retransmissions of the at least some of the PUSCH transmissions using the plurality of determined resources.