UCI handling
Patent Information
- Application Number
- PCT/CN2024/086278
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-04-05
- Publication Date
- 2025-10-09
AI Technical Summary
When applying orthogonal cover codes (OCC) for physical uplink shared channel (PUSCH) repetition, existing technologies cannot effectively handle the multiplexing of uplink control information (UCI) on the same time and frequency resources, resulting in interference and low resource efficiency.
By determining the multiplexing position of UCI in the absence of OCC, delaying, extending or discarding UCI processing methods are adopted to ensure that UCI can be processed at the appropriate time during the PUSCH repetition process to avoid interference.
It improves the performance of OCC, increases the capacity and throughput of the uplink, solves the interference problem when UCI is reused during PUSCH repetition, and improves resource utilization efficiency.
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Figure CN2024086278_09102025_PF_FP_ABST
Abstract
Description
UCI HANDLINGFIELD
[0001] Example embodiments of the present disclosure generally relate to the field of communication, and in particular, to a terminal device, a network device, methods, apparatuses, and a computer-readable storage medium for uplink control information (UCI) handling.BACKGROUND
[0002] A communication network can be seen as a facility that enables communications between two or more communication devices, or provides communication devices access to a data network. A mobile or wireless communication network is one example of a communication network.
[0003] Such communication networks operate in accordance with standards, such as those promulgated by 3GPP (Third Generation Partnership Project) or ETSI (European Telecommunications Standards Institute) . Examples of such standards include the so-called 5G (5th Generation) standard or other standards promulgated by 3GPP.
[0004] Orthogonal cover code (OCC) is a coding technique that can be used to enhance the multi-user multiplexing capability and throughput of a wireless communication network. By assigning orthogonal cover codes to different user equipment (UEs) , it may allow for simultaneous and interference-free transmission of these UEs’ data on the same time-frequency resources. For example, when the OCC is applied to the data on physical uplink shared channel (PUSCH) , it may enable multiplexing UEs on the same time-frequency resources, thereby increasing the resource efficiency.SUMMARY
[0005] In general, example embodiments of the present disclosure provide a solution for UCI handling, especially for UCI handling in case of physical uplink shared channel (PUSCH) repetitions with orthogonal cover code (OCC) .
[0006] In a first aspect, there is provided a terminal device. The terminal device comprises at least one processor and at least one memory storing instructions that, when executed by the at least one processor, cause the terminal device at least to: based on determining that uplink control information (UCI) multiplexing occurs on physical uplink shared channel (PUSCH) repetitions with orthogonal cover code (OCC) , determine UCI handling based on at least one slot where the UCI multiplexing would occur without OCC; and transmit the PUSCH repetitions based on the determined UCI handling.
[0007] In a second aspect, there is provided a network device. The network device comprises at least one processor and at least one memory storing instructions that, when executed by the at least one processor, cause the network device at least to: based on determining that uplink control information (UCI) multiplexing occurs on physical uplink shared channel (PUSCH) repetitions with orthogonal cover code (OCC) , determine UCI handling by a terminal device based on at least one slot where the UCI multiplexing would occur without OCC; and receive, from the terminal device, the PUSCH repetitions based on the determined UCI handling.
[0008] In a third aspect, there is provided a method performed by a terminal device. The method comprises: based on determining that uplink control information (UCI) multiplexing occurs on physical uplink shared channel (PUSCH) repetitions with orthogonal cover code (OCC) , determining UCI handling based on at least one slot where the UCI multiplexing would occur without OCC; and transmitting the PUSCH repetitions based on the determined UCI handling.
[0009] In a fourth aspect, there is provided a method performed by a network device. The method comprises: based on determining that uplink control information (UCI) multiplexing occurs on physical uplink shared channel (PUSCH) repetitions with orthogonal cover code (OCC) , determining UCI handling by a terminal device based on at least one slot where the UCI multiplexing would occur without OCC; and receiving, from the terminal device, the PUSCH repetitions based on the determined UCI handling.
[0010] In a fifth aspect, there is provided an apparatus. The apparatus comprises: means for, based on determining that uplink control information (UCI) multiplexing occurs on physical uplink shared channel (PUSCH) repetitions with orthogonal cover code (OCC) , determining UCI handling based on at least one slot where the UCI multiplexing would occur without OCC; and means for transmitting the PUSCH repetitions based on the determined UCI handling.
[0011] In a sixth aspect, there is provided an apparatus. The apparatus comprises: means for, based on determining that uplink control information (UCI) multiplexing occurs on physical uplink shared channel (PUSCH) repetitions with orthogonal cover code (OCC) , determining UCI handling by a terminal device based on at least one slot where the UCI multiplexing would occur without OCC; and means for receiving, from the terminal device, the PUSCH repetitions based on the determined UCI handling.
[0012] In a seventh aspect, there is provided a terminal device. The terminal device comprises: determining circuitry configured to, based on determining that uplink control information (UCI) multiplexing occurs on physical uplink shared channel (PUSCH) repetitions with orthogonal cover code (OCC) , determine UCI handling based on at least one slot where the UCI multiplexing would occur without OCC; and transmitting circuitry configured to transmit the PUSCH repetitions based on the determined UCI handling.
[0013] In an eighth aspect, there is provided a network device. The network device comprises: determining circuitry configured to, based on determining that uplink control information (UCI) multiplexing occurs on physical uplink shared channel (PUSCH) repetitions with orthogonal cover code (OCC) , determine UCI handling by a terminal device based on at least one slot where the UCI multiplexing would occur without OCC; and receiving circuitry configured to receive, from the terminal device, the PUSCH repetitions based on the determined UCI handling.
[0014] In a ninth aspect, there is provided a non-transitory computer readable medium comprising program instructions for causing an apparatus to perform at least the method of the third aspect or the fourth aspect.
[0015] In a tenth aspect, there is provided a computer program comprising instructions, which, when executed by an apparatus, cause the apparatus to perform at least the method of the third aspect or the fourth aspect.
[0016] It is to be understood that the summary section is not intended to identify key or essential features of embodiments of the present disclosure, nor is it intended to be used to limit the scope of the present disclosure. Other features of the present disclosure will become easily comprehensible through the following description.BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Some example embodiments will now be described with reference to the accompanying drawings, in which:
[0018] FIG. 1A illustrates an example of a network environment in which some example embodiments of the present disclosure may be implemented;
[0019] FIG. 1B illustrates an example of OCC of length 2 for 2 UEs doing 2 PUSCH repetitions at the same time-frequency resources;
[0020] FIG. 1C illustrates an example of PUSCH repetition type A with K = 4 repetitions;
[0021] FIG. 1D illustrates schematically the principle of performing simultaneous transmission of PUCCH and PUSCH within the same slot;
[0022] FIG. 2 illustrates a flowchart illustrating a communication process in accordance with some example embodiments of the present disclosure;
[0023] FIG. 3 illustrates another communication process in accordance with some example embodiments of the present disclosure;
[0024] FIG. 4 illustrates schematically an example of UCI handling in accordance with some example embodiments of the present disclosure;
[0025] FIGS. 5A-5D illustrates schematically further examples of UCI handling in accordance with some example embodiments of the present disclosure;
[0026] FIG. 6 illustrates a flowchart of an example method implemented at a terminal device in accordance with some embodiments of the present disclosure;
[0027] FIG. 7 illustrates a flowchart of an example method implemented at a network device in accordance with some embodiments of the present disclosure;
[0028] FIG. 8 illustrates a simplified block diagram of a network device that is suitable for implementing some example embodiments of the present disclosure; and
[0029] FIG. 9 illustrates a block diagram of an example of a computer-readable medium in accordance with some example embodiments of the present disclosure.
[0030] Throughout the drawings, the same or similar reference numerals represent the same or similar elements.DETAILED DESCRIPTION
[0031] Principles of the present disclosure will now be described with reference to some example 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 can be implemented in various manners other than the ones described below.
[0032] 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.
[0033] References in the present disclosure to “one embodiment, ” “an embodiment, ” “an example embodiment, ” and the like indicate that the embodiment 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 are not necessarily referring to the same embodiment. 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.
[0034] It shall be understood that although the terms “first” and “second” etc. 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. For example, a first element could be termed a second element, and similarly, a second element could be termed a first element, without departing from the scope of example embodiments. As used herein, the term “and / or” includes any and all combinations of one or more of the listed terms.
[0035] 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.
[0036] As used in this application, the term “circuitry” may refer to one or more or all of the following:
[0037] (a) hardware-only circuit implementations (such as implementations in only analog and / or digital circuitry) and
[0038] (b) combinations of hardware circuits and software, such as (as applicable) :
[0039] (i) a combination of analog and / or digital hardware circuit (s) with software / firmware and
[0040] (ii) any portions of hardware processor (s) with software (including digital signal processor (s) ) , software, and memory (ies) that work together to cause an apparatus, such as a mobile phone or server, to perform various functions) and
[0041] (c) hardware circuit (s) and or processor (s) , such as a microprocessor (s) or a portion of a microprocessor (s) , that requires software (for example, firmware) for operation, but the software may not be present when it is not needed for operation.
[0042] This definition of circuitry applies to all uses of this term in this application, including in any claims. As a further example, as used in this application, the term circuitry also covers an implementation of merely a hardware circuit or processor (or multiple processors) or portion of a hardware circuit or processor and its (or their) accompanying software and / or firmware. The term circuitry also covers, for example and if applicable to the particular claim element, a baseband integrated circuit or processor integrated circuit for a mobile device or a similar integrated circuit in server, a cellular network device, or other computing or network device.
[0043] As used herein, the term “communication network” refers to a network following any suitable communication standards, such as Long Term Evolution (LTE) , LTE-Advanced (LTE-A) , Wideband Code Division Multiple Access (WCDMA) , High-Speed Packet Access (HSPA) , Narrow Band Internet of Things (NB-IoT) , Non-terrestrial Network (NTN) and so on. Furthermore, the communications between a terminal device and a network device in the communication network may be performed according to any suitable generation communication protocols, including, but not limited to, the fourth generation (4G) , 4.5G, the fifth generation (5G) communication protocols, sixth generation (6G) communication protocols, and / or any other protocols either currently known or to be developed in the future. Embodiments of the present disclosure may be applied in various communication systems. Given the rapid development in communications, there will of course also be future type communication technologies and systems with which the present disclosure may be embodied. It should not be seen as limiting the scope of the present disclosure to only the aforementioned system.
[0044] As used herein, the term “network device” refers to a node in a communication network via which a terminal device accesses the network and receives services therefrom. The network device may refer to a base station (BS) or an access point (AP) , for example, a node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , a NR NB (also referred to as a gNB) , a Remote Radio Unit (RRU) , a radio header (RH) , a remote radio head (RRH) , a relay, a low power node such as a femto, a pico, and so forth, depending on the applied terminology and technology. In the following description, the terms “network device” and “network node” may be used interchangeably.
[0045] The term “terminal device” refers to any end device that may be capable of wireless communication. By way of example rather than limitation, a terminal device may also be referred to as a communication device, user equipment (UE) , a Subscriber Station (SS) , a Portable Subscriber Station, a Mobile Station (MS) , or an Access Terminal (AT) . The terminal device may include, but not limited to, a mobile phone, a cellular phone, a smart phone, voice over IP (VoIP) phones, wireless local loop phones, a tablet, a wearable terminal device, a personal digital assistant (PDA) , portable computers, desktop computer, image capture terminal devices such as digital cameras, gaming terminal devices, music storage and playback appliances, vehicle-mounted wireless terminal devices, wireless endpoints, mobile stations, laptop-embedded equipment (LEE) , laptop-mounted equipment (LME) , USB dongles, smart devices, wireless customer-premises equipment (CPE) , an Internet of Things (loT) device, a watch or other wearable, a head-mounted display (HMD) , a vehicle, a drone, a medical device and applications (for example, remote surgery) , an industrial device and applications (for example, a robot and / or other wireless devices operating in an industrial and / or an automated processing chain contexts) , a consumer electronics device, a device operating on commercial and / or industrial wireless networks, and the like. In the following description, the terms “terminal device” , “communication device” , “terminal” , “user equipment” and “UE” may be used interchangeably.
[0046] Hereinafter, principles and embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. FIG. 1A illustrates an example of a network environment 100 in which some example embodiments of the present disclosure may be implemented. In the descriptions of the example embodiments of the present disclosure, the network environment 100 may also be referred to as a communication system 100 (for example, a portion of a communication network) . For illustrative purposes only, various aspects of example embodiments will be described in the context of one or more terminal devices and network devices that communicate with one another. It should be appreciated, however, that the description herein may be applicable to other types of apparatus or other similar apparatuses that are referenced using other terminology.
[0047] The network device 110 can provide services to the terminal device 120, and the network device 110 and the terminal device 120 may communicate data and control information with each other. In some embodiments, the network device 110 and the terminal device 120 may communicate with direct links / channels.
[0048] In the communication system 100, a link from the network device 110 to the terminal device 120 is referred to as a downlink (DL) , while a link from the terminal device 120 to the network device 110 is referred to as an uplink (UL) . In downlink, the network device 110 is a transmitting (TX) device (or a transmitter) and the terminal device 120 is a receiving (RX) device (or a receiver) . In uplink, the terminal device 120 is a transmitting (TX) device (or a transmitter) and the network device 110 is a RX device (or a receiver) . It is to be understood that the network device 110 may provide one or more serving cells. As illustrated in FIG. 1A, the network device 110 provides one serving cell 102, and the terminal device 120 camps on the serving cell 102. In some embodiments, the network device 110 can provide multiple serving cells. It is to be understood that the number of serving cell (s) shown in FIG. 1A is for illustrative purposes only without suggesting any limitation.
[0049] Communications in the network environment 100 may be implemented according to any proper communication protocol (s) , comprising, but not limited to, cellular communication protocols of the fourth generation (4G) , the fifth generation (5G) , the sixth generation (6G) and on the like, wireless local network communication protocols such as Institute for Electrical and Electronics Engineers (IEEE) 802.11 and the like, and / or any other protocols currently known or to be developed in the future. Moreover, the communication may utilize any proper wireless communication technology, comprising but not limited to: Code Division Multiple Access (CDMA) , Frequency Division Multiple Access (FDMA) , Time Division Multiple Access (TDMA) , Frequency Division Duplex (FDD) , Time Division Duplex (TDD) , Multiple-Input Multiple-Output (MIMO) , Orthogonal Frequency Division Multiple (OFDM) , Discrete Fourier Transform spread OFDM (DFT-s-OFDM) and / or any other technologies currently known or to be developed in the future.
[0050] It is to be understood that the number of devices and their connection relationships and types shown in FIG. 1A are for illustrative purposes only without suggesting any limitation. The communication system 100 may comprise any suitable number of devices adapted for implementing embodiments of the present disclosure.
[0051] In RAN #102, a new Work Item Description (WID) for NTN targeting NR Rel-19 was approved. Among the objectives of the WI, an objective on Uplink Capacity / Throughput Enhancement for FR1-NTN was approved. More specifically, this objective targets enhancements to the DFT-s-OFDM PUSCH channel via Orthogonal Cover Codes (OCC) to enable multiplexing of multiple UEs in the same time-frequency resources. As can be seen from the description of the objective, the study can consider orthogonal cover codes across OFDM symbols, across slots, and / or within an OFDM symbol, but the present disclosure will specifically focus on the OCC application across intra-slot or inter-slot PUSCH repetitions, i.e. across OFDM symbols and across slots.
[0052] In RAN1 #116, the topic of UCI multiplexing in case of OCC across PUSCH repetitions was brought up, and it was recognized by different companies that it would be a problem to be handled in case the solution of OCC across repetitions is standardized. OCC is a coding technique that can be used to enhance the capacity / throughput of a cellular network. In particular, one could generate a set of orthogonal codes (e.g. Walsh-Hadamard codes) having ideal zero cross-correlation and assign different codes to different UEs to achieve orthogonal (i.e. no interference) UL transmissions on the same time-frequency resources.
[0053] To illustrate the principle of OCC, an example is shown in 错误! 未找到引用源. B in which two UEs are transmitting 2 PUSCH repetitions in the same time-frequency resources. For the transmissions, the two UEs apply different OCCs to their transmission signal (which is assumed here to stay constant across the repetitions) allowing a gNB receiver to receive (i.e. demodulate and decode) the signals of each UE without the interference of the other UE. In mathematical form, how this works is represented in the system of equation below (without channel impairments and additive noise for simplicity of description) where x1 and x2 are the signals transmitted by UE_1 and UE_2, respectively and in both repetitions, whereas y1 and y2 are the total signals received by the gNB in the first and second repetition, respectively. It is to be noted that in this example UE_1 is applying the OCC [1, 1] whereas UE_2 is applying the OCC [1, -1] . In the example of the equations, gNB retrieves the signal of UE_2 without interference from UE_1 by cross-correlating the two received signal y1 and y2 with the OCC used by UE_2 (i.e. [1, -1] ) .
[0054] The example above is only illustrative and uses Walsh-Hadamard orthogonal codes as OCC set. Different sequences can be used to realize orthogonality among users without impacting the applicability of some embodiments of the present disclosure. In addition, it is to be noted that in general in order to multiplex N UEs, a number of at least N PUSCH (or signal) repetitions are necessary.
[0055] In Rel-15 / 16, a Transport Block (TB) is transmitted per slot, i.e., resource allocation for a single PUSCH transmission is limited within a slot. Therefore, a feature called PUSCH aggregation, which was later renamed as PUSCH repetition type A to avoid confusion with PUSCH repetition type B feature introduced in Rel-16 for ultra-reliable low latency applications, was firstly specified in Rel-15 and further enhanced in Rel-16 / 17. PUSCH repetition type A allows repeating the transmission of a TB within a slot multiple times across K slots. The transport block size (TBS) of PUSCH repetition type A is determined based on the resource within a slot. For PUSCH resource in each slot of the K slots, the same starting symbol (S) and length (L) are applied. In Rel-15, these K slots are counted on consecutive physical slots (i.e., including downlink or special slots) with K is RRC configured. Rel-16 allows dynamic indication of K, while Rel-17 further introduces the counting of K on available slots, i.e., only the slots that are available (no collision with DL or SSB symbols) and valid (in terms of S & L) for PUSCH transmission will be counted. Redundancy version (RV) can be cycled across the K slots following a RV sequence. FIG. 1C shows an example of resource allocation and bit selection from circular buffer for PUSCH repetition type A with RV cycling and RV sequence [0 2 3 1] . From the figure (i.e. circular buffer) it can be noticed that the bits transmitted in the repetitions are different, making the application of the OCC across repetitions not possible.
[0056] Further, a UE is normally configured to transmit UL control information (UCI) on the PUCCH. The uplink control information may contain channel state information (CSI) , scheduling requests (SR) and HARQ-ACK information. As part of the normal data transmission, the UE’s payload would be transmitted on the PUSCH, which would normally be transmitted in either a full slot or during a fraction of a slot. For the context of the present disclosure, it is assumed that the UE is transmitting during a full slot due to the normal expected use case of UE being in coverage shortage for being able to utilize OCC on top of the PUSCH transmissions.
[0057] When a UE is having both PUCCH and PUSCH expected to be transmitted in the same slot (or more generically in overlapping time resources) , the UE will have to reserve resources allocated to the normal PUSCH to be able to transmit the UCI along with the UL-SCH data in the PUSCH transmission. One of the key paragraphs for this is captured in 38.213, section 9, where it is stated as follows.
[0058] “If a UE transmits a PUSCH over one or more slots or multiple PUSCHs over one or more slots that are scheduled by a DCI format, and the UE would transmit a PUCCH with HARQ-ACK and / or CSI information over a single slot that overlaps with the PUSCH transmission in the one or more slots, and the PUSCH transmission in the one or more slots fulfills the conditions in clause 9.2.5 for multiplexing the HARQ-ACK and / or CSI information, the UE multiplexes the HARQ-ACK and / or CSI information in the PUSCH transmission in the one or more slots. The UE does not multiplex HARQ-ACK and / or CSI information in the PUSCH transmission in a slot from the one or more slots if the UE would not transmit a single-slot PUCCH with HARQ-ACK and / or CSI information in the slot in case the PUSCH transmission was absent. ”
[0059] An illustration of the principle of performing simultaneous transmission of PUCCH and PUSCH within the same slot is shown in FIG. 1D (from the above reference) . It is to be noted that UCI multiplexing in PUSCH occurs at bit level, i.e. UE transmits only the PUSCH by multiplexing the UCI and UL-SCH data (if present) and not simultaneously the PUCCH and PUSCH channels. The UCI codeword (s) and UL-SCH codeword are concatenated to form a single codeword to transmit on the PUSCH.
[0060] As outlined above, 3GPP specifications defines mechanisms to handledata and control transmission in slots where PUCCH and PUSCH resources would overlap. However, this is contradicting the overall target of applying orthogonal cover codes, where the code should be applied to same data symbols (or data elements) or repetitions of data elements. For example, under the use case of performing OCC across slots (having each entry of the cover code applied for separate slots) it is essential that all the transmitted symbols in slots covered by the code are equal to each other. However, this would not be possible in case uplink control information (UCI) needs to be transmitted during such an OCC based PUSCH transmission, since the UCI would be multiplexed only in a subset of PUSCH repetitions of the PUSCH transmission. Some embodiments of the present disclosure try to target the situation at hand to provide solutions to address this.
[0061] Accordingly, some embodiments of the present disclosure propose a solution for UCI handling, for example, in case of UCI multiplexing on PUSCH repetitions with OCC. In particular, some embodiments of the present disclosure propose methods for postponing UCI multiplexing or for dropping UCI or for expanding UCI in the case of PUSCH repetitions with OCC based on the slot where UCI multiplexing would occur without OCC. In some embodiments of the present disclosure, an OCC period refers to a subset of PUSCH repetitions (equivalent to a subset of slots assuming one PUSCH repetition per slot) across which a full OCC code is applied. In this manner a full set of PUSCH repetitions might be covered by more than one OCC period. In addition, it is to be noted that UCI dropping or postponing or expanding is equivalent to PUCCH dropping or postponing or expanding, respectively, in this application and the two terms may be used interchangeably. The PUCCH is the one that would carry the UCI in case of no collision with PUSCH.
[0062] FIG. 2 illustrates a flowchart illustrating a communication process 200 in accordance with some example embodiments of the present disclosure. For the purpose of discussion, the communication process 200 will be described with reference to FIG. 1A. It would be appreciated that although the communication process 200 has been described referring to the network environment 100 of FIG. 1A, this communication process 200 may be likewise applied to other similar communication scenarios.
[0063] As shown in FIG. 2, at 210, the terminal device 120, based on determining that uplink control information (UCI) multiplexing occurs on physical uplink shared channel (PUSCH) repetitions with orthogonal cover code (OCC) , determines UCI handling based on at least one slot where the UCI multiplexing would occur without OCC. In some embodiments, the UCI handling is further based on whether one or multiple UCI would be multiplexed within the OCC period in case of PUSCH repetitions without OCC. At 220, the terminal device 120 transmits the PUSCH repetitions based on the determined UCI handling to the network device 110.
[0064] On the other hand, at 205, the network device 110 likewise, based on determining that UCI multiplexing occurs on PUSCH repetitions with OCC, determines the UCI handling by the terminal device 120 based on at least one slot where the UCI multiplexing would occur without OCC. And at 220, the network device 110 receives the PUSCH repetitions based on the determined UCI handling from the terminal device 120.
[0065] In some embodiments, the terminal device 120 may determine the UCI handling as follows. The terminal device 120 may determine that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, and (ii) the one or more slots include a first slot of the OCC period. Then, based on the determination of these items (i) and (ii) , the terminal device 120 may determine to expand UCI multiplexing and multiplex the UCI in a set of slots of the OCC period.
[0066] That is to say, if the UCI multiplexing would occur (in case of PUSCH repetitions without OCC) in one or more slots of the current OCC period that include the first slot of the OCC period, the UE expands the UCI multiplexing and multiplexes the UCI (through UCI repetitions) in all the slots of the current OCC period.
[0067] In some embodiments, the terminal device 120 may determine the UCI handling as follows. The terminal device 120 may determine that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, (ii) the one or more slots do not include a first slot of the OCC period, and (iii) the first slot of the OCC period satisfies processing time of the terminal device to provide UCI. Then, based on the determination of these items (i) , (ii) and (iii) , the terminal device 120 may determine to expand UCI multiplexing and multiplex the UCI in a set of slots of the OCC period.
[0068] That is to say, if the UCI multiplexing would occur (in case of PUSCH repetitions without OCC) in one or more slots of the current OCC period that do not include the first slot (i.e. in any slot of the current OCC period) of the current OCC period and if the first slot of current OCC period satisfies UE processing / computation time to provide UCI, then the UE expands the UCI multiplexing and multiplexes the UCI (through UCI repetitions) in all the slots of the current OCC period.
[0069] In some embodiments, the terminal device 120 may determine the UCI handling as follows. The terminal device 120 may determine that (i) in case of PUSCH repetitions without OCC, the terminal device 120 would multiplex (in case of PUSCH repetitions without OCC) multiple UCIs in respectively multiple one or more slots of the current OCC period, then based on the determination the terminal device 120 may determine to expand the multiple UCIs multiplexing and multiplex the UCIs together in a set of slots of the OCC period.
[0070] For example, if the terminal device 120 would multiplex (in case of PUSCH repetitions without OCC) multiple UCIs in respectively multiple one or more slots of the current OCC period, then the terminal device 120 would concatenate the multiple UCIs into a single UCI and multiplex the single UCI (through UCI repetitions) in all the slots of the current OCC period.
[0071] In some embodiments, the processing time may comprise channel state information (CSI) computation time of the terminal device, physical downlink shared channel (PDSCH) processing procedure time of the terminal device, time required for the terminal device to process an input and provide the UCI as an output, or a combination thereof.
[0072] In some embodiments, the terminal device 120 may determine the UCI handling as follows. The terminal device 120 may determine that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of a first OCC period, and (ii) the one or more slots do not include a first slot of the first OCC period. Then, based on the determination of these items (i) and (ii) , the terminal device 120 may determine to postpone the UCI multiplexing to a second OCC period.
[0073] That is to say, if the UCI multiplexing would occur (in case of PUSCH repetitions without OCC) in one or more slots of the current OCC period that do not include the first slot of the current OCC period, UE postpones UCI multiplexing to the next OCC period.
[0074] In some embodiments, the UCI multiplexing may occur in a set of slots of the second OCC period. In other words, the UCI multiplexing may occur in all the slots of the next OCC period. In some embodiments, the UCI multiplexing may occur in a subset of the set of slots of the second OCC period. In other words, the UCI multiplexing may occur in a subset of all the slots of the next OCC period.
[0075] In some embodiments, the terminal device 120 may determine the UCI handling as follows. The terminal device 120 may determine that (i) in case of PUSCH repetitions without OCC, the terminal device 120 would multiplex (in case of PUSCH repetitions without OCC) multiple UCIs in respectively multiple one or more slots of a first OCC period, then based on the determination the terminal device 120 may determine to postpone the multiple UCIs multiplexing to a second OCC period and multiplex the multiple UCIs together in a set of slots of the second OCC period.
[0076] For example, if the terminal device 120 would multiplex (in case of PUSCH repetitions without OCC) multiple UCIs in respectively multiple one or more slots of the current OCC period, then the terminal device 120 would concatenate the multiple UCIs into a single UCI and multiplex the single UCI (through UCI repetitions) in all the slots of the second OCC period.
[0077] For example, if the terminal device 120 would multiplex (in case of PUSCH repetitions without OCC) multiple UCIs in respectively multiple one or more slots of the current OCC period, then the terminal device 120 would postpone the related multiple PUCCH transmissions to a same slot of the second OCC period. In one example, the multiple UCI associated to the multiple PUCCH transmissions would then be concatenated and transmitted in all the slots of the second OCC period with multiplexing in the PUSCH repetitions.
[0078] In some embodiments, the terminal device 120 may determine the UCI handling as follows. The terminal device 120 may determine that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, (ii) the one or more slots do not include a first slot of the OCC period, and (iii) the OCC period is a last OCC period within a set of PUSCH repetitions. Then, based on the determination of these items (i) , (ii) and (iii) , the terminal device 120 may determine to drop the UCI.
[0079] That is to say, if the UCI multiplexing would occur (in case of PUSCH repetitions without OCC) in one or more slots of the current OCC period that do not include the first slot of the current OCC period and the current OCC period is a last OCC period within a set of PUSCH repetitions, UE drops the UCI and does not transmit it to gNB.
[0080] In some embodiments, the PUSCH repetitions are associated with a first PUSCH transmission, and the terminal device 120 may determine the UCI handling as follows. The terminal device 120 may determine that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, (ii) the one or more slots do not include a first slot of the OCC period, and (iii) the OCC period is a last OCC period within a set of PUSCH repetitions. Then, based on the determination of these items (i) , (ii) and (iii) , the terminal device 120 may determine to postpone the UCI transmission to a physical uplink control channel (PUCCH) or UCI multiplexing to a second PUSCH transmission.
[0081] That is to say, if the UCI multiplexing would occur (in case of PUSCH repetitions without OCC) in one or more slots of the current OCC period that do not include the first slot of the current OCC period and the current OCC period is a last OCC period within a set of PUSCH repetitions, UE postpones the UCI transmission to next PUCCH or UCI multiplexing to the next PUSCH transmission.
[0082] In some embodiments, the second PUSCH transmission may be a subsequent PUSCH transmission. In some embodiments, the second PUSCH transmission may be a n-th PUSCH transmission after the first PUSCH transmission. In some embodiments, the second PUSCH transmission may be configured with OCC. In some embodiments, the second PUSCH transmission may be configured without OCC. In some embodiments, the second PUSCH transmission may be configured with PUSCH repetitions. In some embodiments, the second PUSCH transmission may be configured without PUSCH repetitions.
[0083] In some embodiments, the UCI is to be multiplexed in the second PUSCH transmission, and the terminal device 120 may, based on determining that OCC is enabled for the second PUSCH transmission, determine to multiplex the UCI in a first OCC period of the second PUSCH transmission. In other words, if the UCI is multiplexed in a next PUSCH transmission and OCC is enabled for this next PUSCH transmission, the UCI is multiplexed in the first OCC period of this next PUSCH transmission.
[0084] In some embodiments, the UCI is to be multiplexed in the second PUSCH transmission, and the terminal device 120 may, based on determining that OCC is not enabled for the second PUSCH transmission, determine to multiplex the UCI in the second PUSCH transmission. In other words, if the UCI is multiplexed in a next PUSCH transmission and OCC is not enabled for this next PUSCH transmission, the UCI is multiplexed in the PUSCH transmission.
[0085] In some embodiments, the terminal device 120 may receive assistance information indicating whether to perform the specific UCI handling, and the specific UCI handling is determined by the terminal device 120 based on determining that the assistance information indicates to perform the UCI handling. That is to say, UE is further provided with assistance information that indicates whether to perform the UCI handling methods as above provided by the present disclosure.
[0086] In some embodiments, the assistance information may indicate whether multiple terminal devices are operating in parallel where network is using the OCC on PUSCH. That is to say, such information indicates to the UE whether multiple UEs are operating in parallel (for example, an indication for cases where the gNB is trying to utilize the OCC for multiplexing capacity gains) . In case such information indicates that no other UE is currently “sharing same resources” with the current UE, the UE may drop the rules above and fall back to normal PUCCH multiplexing rules.
[0087] In some embodiments, the assistance information may comprise a flag on activation or deactivation of the UCI handling. That is to say, such information indicates to the UE a flag on activation or deactivation of the UCI handling methods as above. In some embodiments, the terminal device 120 may further expect that a hybrid automatic repeat request acknowledgement (HARQ-ACK) transmission is not to be scheduled in a slot other than a first slot in a last OCC period.
[0088] In view of the process flow 200, the solutions provided by some embodiments of the present disclosure propose a solution for UCI handling in case of UCI multiplexing on PUSCH repetitions with OCC. In particular, some embodiments of the present disclosure propose methods for postponing UCI multiplexing or for dropping UCI or for expanding UCI in the case of PUSCH repetitions with OCC based on the slot where UCI multiplexing would occur without OCC. In this way, OCC performance is improved.
[0089] FIG. 3 illustrates a communication process 300 in accordance with some example embodiments of the present disclosure, in which if the UCI multiplexing would occur (in case of PUSCH repetitions without OCC) in one or more slots of the current OCC period that do not include the first slot of the current OCC period, UE 302 postpones UCI multiplexing to the next OCC period.
[0090] As shown in FIG. 3, at 305, UE 302 is configured with OCC operation. In some embodiments, UE may be configured to operate with OCC via RRC signalling from gNB 301. At 310, UE is scheduled to transmit PUSCH repetitions applying an OCC code of a certain length, creating several OCC periods within the duration of the PUSCH repetitions.
[0091] At 315, UE 302 determines OCC periods. In some embodiments, the specific OCC code to use may be dynamically indicated, or be RRC configured. According to some embodiments, OCC period may refer to a set of PUSCH repetitions (equivalent to a set of slots assuming one PUSCH repetition per slot) across which a full OCC code is applied.
[0092] At 320, UE 302 transmits to gNB 301 PUSCH repetitions with OCC application based on the determined OCC periods. At 325, after having started PUSCH repetitions, UE 302 determines that a PUCCH transmission overlaps with one or more slots in current OCC period. At 330, UE 302 determines that slot (s) within current OCC period where UCI multiplexing would occur, and determines that the one or more slots do not include the first slot of the current OCC period. Optionally, UE 302 may further determine that the first slot does not satisfy its processing / computation time. At 335, based on the determinations of 330, UE 302 determines to postpone UCI multiplexing to next OCC period, e.g. in all slots of next OCC period.
[0093] FIG. 4 illustrates schematically an example of UCI handling in accordance with some example embodiments of the present disclosure, with creation of OCC periods within duration of PUSCH repetitions for a number of 4 PUSCH repetitions. In particular, FIG. 4 illustrates two OCC periods 410 and 420 within duration of PUSCH repetitions, which may be respectively referred to “the current OCC period” and “the next OCC period” , or the like.
[0094] As shown in FIG. 4, UE 302 determines that the UCI occasion 405 would occur at the second repetition 402 of the current OCC period 410 instead of the first repetition 401 of the current OCC period 410, assuming that there was no OCC applied. That is, UE 302 determines that in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, and the one or more slots do not include a first slot of the OCC period. Then, UE 302 determines to postpone the UCI multiplexing to the next OCC period 420, that is, the third repetition 403 and the fourth repetition 404.
[0095] Referring back to FIG. 3, at 340, UE 302 performs the continuation of PUSCH repetitions with UCI multiplexing in next (upcoming) OCC period (for example, the next OCC period 420) .
[0096] FIGS. 5A-5D illustrates schematically further examples of UCI handling in accordance with some example embodiments of the present disclosure. As shown in FIG. 5A, if the UCI multiplexing would occur (in case of PUSCH repetitions without OCC) in one or more slots of the current OCC period that include the first slot of the OCC period, the UE expands the UCI multiplexing and multiplexes the UCI (through UCI repetitions) in all the slots of the current OCC period.
[0097] As shown in FIG. 5B, if the UCI multiplexing would occur (in case of PUSCH repetitions without OCC) in one or more slots of the current OCC period that do not include the first slot of the current OCC period and if the first slot of current OCC period satisfies UE processing / computation time to provide UCI, then the UE expands the UCI multiplexing and multiplexes the UCI (through UCI repetitions) in all the slots of the current OCC period.
[0098] As shown in FIG. 5C, if the UCI multiplexing would occur (in case of PUSCH repetitions without OCC) in one or more slots of the current OCC period that do not include the first slot of the current OCC period and the current OCC period is a last OCC period within a set of PUSCH repetitions, UE drops the UCI and does not transmit it to gNB.
[0099] As shown in FIG. 5D, if the UCI multiplexing would occur (in case of PUSCH repetitions without OCC) in one or more slots of the current OCC period that do not include the first slot of the current OCC period and the current OCC period is a last OCC period within a set of PUSCH repetitions, UE postpones the UCI multiplexing to the next / upcoming PUSCH transmission without OCC.
[0100] FIG. 6 illustrates a flowchart of an example method 600 implemented at a terminal device in accordance with some other embodiments of the present disclosure. For the purpose of discussion, the method 600 will be described from the perspective of the terminal device (UE) with reference to FIGS. 1A and 2.
[0101] At block 610, the terminal device based on determining that uplink control information (UCI) multiplexing occurs on physical uplink shared channel (PUSCH) repetitions with orthogonal cover code (OCC) , determines UCI handling based on at least one slot where the UCI multiplexing would occur without OCC. At block 620, the terminal device transmit the PUSCH repetitions based on the determined UCI handling.
[0102] In some embodiments, the terminal device may determine the UCI handling by: based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, and (ii) the one or more slots include a first slot of the OCC period, determining to expand UCI multiplexing and multiplex UCI in a set of slots of the OCC period.
[0103] In some embodiments, the terminal device may determine the UCI handling by: based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, (ii) the one or more slots do not include a first slot of the OCC period, and (iii) the first slot of the OCC period satisfies processing time of the terminal device to provide UCI, determining to expand UCI multiplexing and multiplex the UCI in a set of slots of the OCC period.
[0104] In some embodiments, the processing time may comprise channel state information (CSI) computation time of the terminal device; or physical downlink shared channel (PDSCH) processing procedure time of the terminal device; or time required for the terminal device to process an input and provide the UCI as an output; or a combination thereof.
[0105] In some embodiments, the terminal device may determine the UCI handling by: based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of a first OCC period, and (ii) the one or more slots do not include a first slot of a first OCC period, determining to postpone the UCI multiplexing to a second OCC period.
[0106] In some embodiments, the UCI multiplexing may occur in a set of slots of the second OCC period; or the UCI multiplexing may occur in a subset of the set of slots of the second OCC period.
[0107] In some embodiments, the terminal device may determine the UCI handling by: based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, (ii) the one or more slots do not include a first slot of the OCC period, and (iii) the OCC period is a last OCC period within a set of PUSCH repetitions, determining to drop the UCI.
[0108] In some embodiments, the PUSCH repetitions may be associated with a first PUSCH transmission, and the terminal device may determine the UCI handling by: based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, (ii) the one or more slots do not include a first slot of the OCC period, and (iii) the OCC period is a last OCC period within a set of PUSCH repetitions, determining to postpone the UCI transmission to a physical uplink control channel (PUCCH) or multiplex the UCI transmission to a second PUSCH transmission.
[0109] In some embodiments, the second PUSCH transmission may be a subsequent PUSCH transmission; the second PUSCH transmission may be a n-th PUSCH transmission after the first PUSCH transmission; the second PUSCH transmission may be configured with OCC; the second PUSCH transmission may be configured without OCC; the second PUSCH transmission may be configured with PUSCH repetitions; or the second PUSCH transmission may be configured without PUSCH repetitions.
[0110] In some embodiments, the UCI is to be multiplexed in the second PUSCH transmission, and the terminal device may further: based on determining that OCC is enabled for the second PUSCH transmission, determine to multiplex the UCI in a first OCC period of the second PUSCH transmission; or based on determining that OCC is not enabled for the second PUSCH transmission, determine to multiplex the UCI in the second PUSCH transmission.
[0111] In some embodiments, the terminal device may further: receive assistance information indicating whether to perform the specific UCI handling, wherein the specific UCI handling is determined by the terminal device based on determining that the assistance information indicates to perform the UCI handling.
[0112] In some embodiments, the assistance information may indicate whether multiple terminal devices are operating in parallel where network is using the OCC on PUSCH; or the assistance information may comprise a flag on activation or deactivation of the UCI handling.
[0113] In some embodiments, the terminal device may further: determine that a hybrid automatic repeat request acknowledgement (HARQ-ACK) of physical downlink share channel (PDSCH) is not to be transmitted based on determining that transmission would occur in a slot other than a first slot in a last OCC period.
[0114] FIG. 7 illustrates another flowchart of an example method 700 implemented at a network device in accordance with some other embodiments of the present disclosure. For the purpose of discussion, the method 700 will be described from the perspective of the network device (gNB, NW, etc. ) with reference to FIGS. 1A and 2.
[0115] At block 710, the network device, based on determining that uplink control information (UCI) multiplexing occurs on physical uplink shared channel (PUSCH) repetitions with orthogonal cover code (OCC) , determines UCI handling by a terminal device based on at least one slot where the UCI multiplexing would occur without OCC. At block 720, the network device receives, from the terminal device, the PUSCH repetitions based on the determined UCI handling.
[0116] In some embodiments, the network device may determine the UCI handling by: based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, and (ii) the one or more slots include a first slot of the OCC period, determining that UCI is expanded and multiplexed in a set of slots of the OCC period.
[0117] In some embodiments, the network device may determine the UCI handling by: based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, (ii) the one or more slots do not include a first slot of the OCC period, and (iii) the first slot of the OCC period satisfies processing time of the terminal device to provide UCI, determining that the UCI is expanded and multiplexed in a set of slots of the OCC period.
[0118] In some embodiments, the processing time may comprise: channel state information (CSI) computation time of the terminal device; or physical downlink shared channel (PDSCH) processing procedure time of the terminal device; or time required for the terminal device to process an input and provide the UCI as an output; or a combination thereof.
[0119] In some embodiments, the network device may determine the UCI handling by: based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of a first OCC period, and (ii) the one or more slots do not include a first slot of the first OCC period, determining that the UCI multiplexing is postponed to a second OCC period.
[0120] In some embodiments, the UCI multiplexing may occur in a set of slots of the second OCC period; or the UCI multiplexing may occur in a subset of the set of slots of the second OCC period.
[0121] In some embodiments, the network device may determine the UCI handling by: based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, (ii) the one or more slots do not include a first slot of the OCC period, and (iii) the OCC period is a last OCC period within a set of PUSCH repetitions, determining that the UCI is dropped.
[0122] In some embodiments, the PUSCH repetitions may be associated with a first PUSCH transmission, and the network device may determine the UCI handling by: based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, (ii) the one or more slots do not include a first slot of the OCC period, and (iii) the OCC period is a last OCC period within a set of PUSCH repetitions, determining that the UCI transmission is postponed to a physical uplink control channel (PUCCH) transmission or is multiplexed to a second PUSCH transmission.
[0123] In some embodiments, the second PUSCH transmission may be a subsequent PUSCH transmission; the second PUSCH transmission may be a nth PUSCH transmission after the first PUSCH transmission; the second PUSCH transmission may be configured with OCC; the second PUSCH transmission may be configured without OCC; the second PUSCH transmission may be configured with PUSCH repetitions; or the second PUSCH transmission may be configured without PUSCH repetitions.
[0124] In some embodiments, the UCI is to be multiplexed in the second PUSCH transmission, and the network device may further: based on determining that OCC is enabled for the second PUSCH transmission, determine that the UCI is multiplexed in a first OCC period of the second PUSCH transmission; or based on determining that OCC is not enabled for the second PUSCH transmission, determine that the UCI is multiplexed in the second PUSCH transmission.
[0125] In some embodiments, the network device may further: transmit, to the terminal device, assistance information indicating whether to perform the specific UCI handling, wherein the specific UCI handling is determined by the network device based on determining that the assistance information indicates to perform the UCI handling.
[0126] In some embodiments, the assistance information may indicate whether multiple terminal devices are operating in parallel where network is using the OCC on PUSCH; or the assistance information may comprise a flag on activation or deactivation of the UCI handling.
[0127] In some embodiments, the network device may further: prevent from scheduling a hybrid automatic repeat request acknowledgement (HARQ-ACK) of physical downlink share channel (PDSCH) based on determining that transmission would occur in a slot other than a first slot in a last OCC period.
[0128] In some embodiments, an apparatus capable of performing the method 600 (for example, the terminal device) may comprise means for performing the respective steps of the method 600. The means may be implemented in any suitable form. For example, the means may be implemented in a circuitry or software module.
[0129] In some example embodiments, the apparatus comprises: means for, based on determining that uplink control information (UCI) multiplexing occurs on physical uplink shared channel (PUSCH) repetitions with orthogonal cover code (OCC) , determining UCI handling based on at least one slot where the UCI multiplexing would occur without OCC; and means for transmitting the PUSCH repetitions based on the determined UCI handling.
[0130] In some embodiments, the means for determining the UCI handling may comprise means for, based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, and (ii) the one or more slots include a first slot of the OCC period, determining to expand UCI multiplexing and multiplex UCI in a set of slots of the OCC period.
[0131] In some embodiments, the means for determining the UCI handling may comprise means for, based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, (ii) the one or more slots do not include a first slot of the OCC period, and (iii) the first slot of the OCC period satisfies processing time of the terminal device to provide UCI, determining to expand UCI multiplexing and multiplex the UCI in a set of slots of the OCC period.
[0132] In some embodiments, the processing time may comprise channel state information (CSI) computation time of the terminal device; or physical downlink shared channel (PDSCH) processing procedure time of the terminal device; or time required for the terminal device to process an input and provide the UCI as an output; or a combination thereof.
[0133] In some embodiments, the means for determining the UCI handling may comprise means for, based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of a first OCC period, and (ii) the one or more slots do not include a first slot of a first OCC period, determining to postpone the UCI multiplexing to a second OCC period.
[0134] In some embodiments, the UCI multiplexing may occur in a set of slots of the second OCC period; or the UCI multiplexing may occur in a subset of the set of slots of the second OCC period.
[0135] In some embodiments, the means for determining the UCI handling may comprise means for, based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, (ii) the one or more slots do not include a first slot of the OCC period, and (iii) the OCC period is a last OCC period within a set of PUSCH repetitions, determining to drop the UCI.
[0136] In some embodiments, the PUSCH repetitions may be associated with a first PUSCH transmission, and the means for determining the UCI handling may comprise means for, based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, (ii) the one or more slots do not include a first slot of the OCC period, and (iii) the OCC period is a last OCC period within a set of PUSCH repetitions, determining to postpone the UCI transmission to a physical uplink control channel (PUCCH) or multiplex the UCI transmission to a second PUSCH transmission.
[0137] In some embodiments, the second PUSCH transmission may be a subsequent PUSCH transmission; the second PUSCH transmission may be a n-th PUSCH transmission after the first PUSCH transmission; the second PUSCH transmission may be configured with OCC; the second PUSCH transmission may be configured without OCC; the second PUSCH transmission may be configured with PUSCH repetitions; or the second PUSCH transmission may be configured without PUSCH repetitions.
[0138] In some embodiments, the UCI is to be multiplexed in the second PUSCH transmission, and the apparatus may further comprise means for: based on determining that OCC is enabled for the second PUSCH transmission, determine to multiplex the UCI in a first OCC period of the second PUSCH transmission; or based on determining that OCC is not enabled for the second PUSCH transmission, determine to multiplex the UCI in the second PUSCH transmission.
[0139] In some embodiments, the apparatus may further comprise means for receiving assistance information indicating whether to perform the specific UCI handling, wherein the specific UCI handling is determined by the terminal device based on determining that the assistance information indicates to perform the UCI handling.
[0140] In some embodiments, the assistance information may indicate whether multiple terminal devices are operating in parallel where network is using the OCC on PUSCH; or the assistance information may comprise a flag on activation or deactivation of the UCI handling.
[0141] In some embodiments, the apparatus may further comprise means for determining that a hybrid automatic repeat request acknowledgement (HARQ-ACK) of physical downlink share channel (PDSCH) is not to be transmitted based on determining that transmission would occur in a slot other than a first slot in a last OCC period.
[0142] In some embodiments, the apparatus further comprises means for performing other steps in some embodiments of the method 600. In some embodiments, the means comprises at least one processor and at least one memory including computer program code, the at least one memory and computer program code configured to, with the at least one processor, cause the performance of the apparatus.
[0143] In some embodiments, an apparatus capable of performing the method 700 (for example, the network device (gNB, NW, etc. ) ) may comprise means for performing the respective steps of the method 700. The means may be implemented in any suitable form. For example, the means may be implemented in a circuitry or software module.
[0144] In some example embodiments, the apparatus comprises: means for, based on determining that uplink control information (UCI) multiplexing occurs on physical uplink shared channel (PUSCH) repetitions with orthogonal cover code (OCC) , determining UCI handling by a terminal device based on at least one slot where the UCI multiplexing would occur without OCC; and means for receiving, from the terminal device, the PUSCH repetitions based on the determined UCI handling.
[0145] In some embodiments, the means for determining the UCI handling comprises means for, based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, and (ii) the one or more slots include a first slot of the OCC period, determining that UCI is expanded and multiplexed in a set of slots of the OCC period.
[0146] In some embodiments, the means for determining the UCI handling comprises means for, based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, (ii) the one or more slots do not include a first slot of the OCC period, and (iii) the first slot of the OCC period satisfies processing time of the terminal device to provide UCI, determining that the UCI is expanded and multiplexed in a set of slots of the OCC period.
[0147] In some embodiments, the processing time may comprise: channel state information (CSI) computation time of the terminal device; or physical downlink shared channel (PDSCH) processing procedure time of the terminal device; or time required for the terminal device to process an input and provide the UCI as an output; or a combination thereof.
[0148] In some embodiments, the means for determining the UCI handling comprises means for, based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of a first OCC period, and (ii) the one or more slots do not include a first slot of the first OCC period, determining that the UCI multiplexing is postponed to a second OCC period.
[0149] In some embodiments, the UCI multiplexing may occur in a set of slots of the second OCC period; or the UCI multiplexing may occur in a subset of the set of slots of the second OCC period.
[0150] In some embodiments, the means for determining the UCI handling comprises means for, based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, (ii) the one or more slots do not include a first slot of the OCC period, and (iii) the OCC period is a last OCC period within a set of PUSCH repetitions, determining that the UCI is dropped.
[0151] In some embodiments, the PUSCH repetitions may be associated with a first PUSCH transmission, and the means for determining the UCI handling comprises means for, based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, (ii) the one or more slots do not include a first slot of the OCC period, and (iii) the OCC period is a last OCC period within a set of PUSCH repetitions, determining that the UCI transmission is postponed to a physical uplink control channel (PUCCH) transmission or is multiplexed to a second PUSCH transmission.
[0152] In some embodiments, the second PUSCH transmission may be a subsequent PUSCH transmission; the second PUSCH transmission may be a nth PUSCH transmission after the first PUSCH transmission; the second PUSCH transmission may be configured with OCC; the second PUSCH transmission may be configured without OCC; the second PUSCH transmission may be configured with PUSCH repetitions; or the second PUSCH transmission may be configured without PUSCH repetitions.
[0153] In some embodiments, the UCI is to be multiplexed in the second PUSCH transmission, and the apparatus may further comprise means for: based on determining that OCC is enabled for the second PUSCH transmission, determining that the UCI is multiplexed in a first OCC period of the second PUSCH transmission; or based on determining that OCC is not enabled for the second PUSCH transmission, determining that the UCI is multiplexed in the second PUSCH transmission.
[0154] In some embodiments, the apparatus may further comprise means for transmitting, to the terminal device, assistance information indicating whether to perform the specific UCI handling, wherein the specific UCI handling is determined by the network device based on determining that the assistance information indicates to perform the UCI handling.
[0155] In some embodiments, the assistance information may indicate whether multiple terminal devices are operating in parallel where network is using the OCC on PUSCH; or the assistance information may comprise a flag on activation or deactivation of the UCI handling.
[0156] In some embodiments, the apparatus may further comprise means for preventing from scheduling a hybrid automatic repeat request acknowledgement (HARQ-ACK) of physical downlink share channel (PDSCH) based on determining that transmission would occur in a slot other than a first slot in a last OCC period.
[0157] In some embodiments, the apparatus further comprises means for performing other steps in some embodiments of the method 700. In some embodiments, the means comprises at least one processor and at least one memory including computer program code, the at least one memory and computer program code configured to, with the at least one processor, cause the performance of the apparatus.
[0158] FIG. 8 illustrates a simplified block diagram of a device 800 that is suitable for implementing some example embodiments of the present disclosure. The device 800 may be provided to implement a communication device, for example, the network device or the terminal device as shown in FIG. 2. As shown, the device 800 includes one or more processors 810, one or more memories 820 coupled to the processor 810, and one or more communication modules 840 coupled to the processor 810.
[0159] The communication module 840 is for bidirectional communications. The communication module 840 has at least one antenna to facilitate communication. The communication interface may represent any interface that is necessary for communication with other network elements.
[0160] The processor 810 may be of any type suitable to the local technical network and may include one or more of the following: general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples. The device 800 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock which synchronizes the main processor.
[0161] The memory 820 may include one or more non-volatile memories and one or more volatile memories. Examples of the non-volatile memories include, but are not limited to, a Read Only Memory (ROM) 824, an electrically programmable read only memory (EPROM) , a flash memory, a hard disk, a compact disc (CD) , a digital video disk (DVD) , and other magnetic storage and / or optical storage. Examples of the volatile memories include, but are not limited to, a random access memory (RAM) 822 and other volatile memories that will not last in the power-down duration.
[0162] A computer program 830 includes computer executable instructions that are executed by the associated processor 810. The program 830 may be stored in the ROM 824. The processor 810 may perform any suitable actions and processing by loading the program 830 into the RAM 822.
[0163] The embodiments of the present disclosure may be implemented by means of the program 830 so that the device 800 may perform any process of the disclosure as discussed with reference to FIG. 2. The embodiments of the present disclosure may also be implemented by hardware or by a combination of software and hardware.
[0164] In some example embodiments, the program 830 may be tangibly contained in a computer-readable medium which may be included in the device 800 (such as in the memory 820) or other storage devices that are accessible by the device 800. The device 800 may load the program 830 from the computer-readable medium to the RAM 822 for execution. The computer-readable medium may include any types of tangible non-volatile storage, such as ROM, EPROM, a flash memory, a hard disk, CD, DVD, and the like.
[0165] FIG. 9 illustrates a block diagram of an example of a computer-readable medium 1000 in accordance with some example embodiments of the present disclosure. The computer-readable medium 900 has the program 830 stored thereon. It is noted that although the computer-readable medium 900 is depicted in form of CD or DVD in FIG. 9, the computer-readable medium 900 may be in any other form suitable for carry or hold the program 830.
[0166] Generally, various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. While various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using some other pictorial representations, it is to be understood that the block, apparatus, system, technique or method described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
[0167] The present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer-readable storage medium. The computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target real or virtual processor, to carry out the method 600 or 700 as described above with reference to FIG. 6 or 7. Generally, program modules include routines, programs, libraries, objects, classes, components, data structures, or the like that perform particular tasks or implement particular abstract data types. The functionality of the program modules may be combined or split between program modules as desired in various embodiments. Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed device, program modules may be located in both local and remote storage media.
[0168] Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code may execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
[0169] In the context of the present disclosure, the computer program codes or related data may be carried by any suitable carrier to enable the device, apparatus or processor to perform various processes and operations as described above. Examples of the carrier include a signal, computer-readable medium, and the like.
[0170] The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. A computer-readable medium may include but not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of the computer-readable storage medium would include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM) , a read-only memory (ROM) , an erasable programmable read-only memory (EPROM or Flash memory) , an optical fiber, a portable compact disc read-only memory (CD-ROM) , an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. The term “non-transitory, ” as used herein, is a limitation of the medium itself (i.e., tangible, not a signal) as opposed to a limitation on data storage persistency (e.g., RAM vs. ROM) .
[0171] Further, while operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are contained in the above discussions, these should not be construed as limitations on the scope of the present disclosure, but rather as descriptions of features that may be specific to particular embodiments. Certain features that are described in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment may also be implemented in multiple embodiments separately or in any suitable sub-combination.
[0172] Although the present disclosure has been described in languages specific to structural features and / or methodological acts, it is to be understood that the present disclosure defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.
Claims
1.A terminal device comprising:at least one processor; andat least one memory storing instructions that, when executed by the at least one processor, cause the terminal device at least to:based on determining that uplink control information (UCI) multiplexing occurs on physical uplink shared channel (PUSCH) repetitions with orthogonal cover code (OCC) , determine UCI handling based on at least one slot where the UCI multiplexing would occur without OCC; andtransmit the PUSCH repetitions based on the determined UCI handling.2.The terminal device of claim 1, wherein the terminal device is caused to determine the UCI handling by:based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, and (ii) the one or more slots include a first slot of the OCC period, determining to expand UCI multiplexing and multiplex UCI in a set of slots of the OCC period.3.The terminal device of claim 1, wherein the terminal device is caused to determine the UCI handling by:based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, (ii) the one or more slots do not include a first slot of the OCC period, and (iii) the first slot of the OCC period satisfies processing time of the terminal device to provide UCI, determining to expand UCI multiplexing and multiplex the UCI in a set of slots of the OCC period.4.The terminal device of claim 3, wherein the processing time comprises at least one of the following:Channel state information (CSI) computation time of the terminal device; orphysical downlink shared channel (PDSCH) processing procedure time of the terminal device; ortime required for the terminal device to process an input and provide the UCI as an output.5.The terminal device of claim 1, wherein the terminal device is caused to determine the UCI handling by:based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of a first OCC period, and (ii) the one or more slots do not include a first slot of a first OCC period, determining to postpone the UCI multiplexing to a second OCC period.6.The terminal device of claim 5, wherein:the UCI multiplexing occurs in a set of slots of the second OCC period; orthe UCI multiplexing occurs in a subset of the set of slots of the second OCC period.7.The terminal device of claim 1, wherein the terminal device is caused to determine the UCI handling by:based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, (ii) the one or more slots do not include a first slot of the OCC period, and (iii) the OCC period is a last OCC period within a set of PUSCH repetitions, determining to drop the UCI.8.The terminal device of claim 1, wherein the PUSCH repetitions are associated with a first PUSCH transmission, and the terminal device is caused to determine the UCI handling by:based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, (ii) the one or more slots do not include a first slot of the OCC period, and (iii) the OCC period is a last OCC period within a set of PUSCH repetitions, determining to postpone the UCI transmission to a physical uplink control channel (PUCCH) or multiplexing to a second PUSCH transmission.9.The terminal device of claim 8, wherein:the second PUSCH transmission is a subsequent PUSCH transmission;the second PUSCH transmission is a n-th PUSCH transmission after the first PUSCH transmission;the second PUSCH transmission is configured with OCC;the second PUSCH transmission is configured without OCC;the second PUSCH transmission is configured with PUSCH repetitions; orthe second PUSCH transmission is configured without PUSCH repetitions.10.The terminal device of claim 8 or 9, wherein the UCI is to be multiplexed in the second PUSCH transmission, and the terminal device is further caused to:based on determining that OCC is enabled for the second PUSCH transmission, determine to multiplex the UCI in a first OCC period of the second PUSCH transmission; orbased on determining that OCC is not enabled for the second PUSCH transmission, determine to multiplex the UCI in the second PUSCH transmission.11.The terminal device of any of claims 1-10, wherein the terminal device is further caused to:receive assistance information indicating whether to perform the specific UCI handling, wherein the specific UCI handling is determined by the terminal device based on determining that the assistance information indicates to perform the UCI handling.12.The terminal device of claim 11, wherein:the assistance information indicates whether multiple terminal devices are operating in parallel where network is using the OCC on PUSCH; orthe assistance information comprises a flag on activation or deactivation of the UCI handling.13.The terminal device of any of claims 1-12, wherein the terminal device is further caused to:determine that a hybrid automatic repeat request acknowledgement (HARQ-ACK) of physical downlink share channel (PDSCH) is not to be transmitted based on determining that transmission would occur in a slot other than a first slot in a last OCC period.14.A network device, comprising:at least one processor; andat least one memory storing instructions that, when executed by the at least one processor, cause the network device at least to:based on determining that uplink control information (UCI) multiplexing occurs on physical uplink shared channel (PUSCH) repetitions with orthogonal cover code (OCC) , determine UCI handling by a terminal device based on at least one slot where the UCI multiplexing would occur without OCC; andreceive, from the terminal device, the PUSCH repetitions based on the determined UCI handling.15.The network device of claim 14, wherein the network device is caused to determine the UCI handling by:based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, and (ii) the one or more slots include a first slot of the OCC period, determining that UCI is expanded and multiplexed in a set of slots of the OCC period.16.The network device of claim 14, wherein the network device is caused to determine the UCI handling by:based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, (ii) the one or more slots do not include a first slot of the OCC period, and (iii) the first slot of the OCC period satisfies processing time of the terminal device to provide UCI, determining that the UCI is expanded and multiplexed in a set of slots of the OCC period.17.The network device of claim 16, wherein the processing time comprises at least one of the following:channel state information (CSI) computation time of the terminal device; orphysical downlink shared channel (PDSCH) processing procedure time of the terminal device; ortime required for the terminal device to process an input and provide the UCI as an output.18.The network device of claim 14, wherein the network device is caused to determine the UCI handling by:based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of a first OCC period, and (ii) the one or more slots do not include a first slot of the first OCC period, determining that the UCI multiplexing is postponed to a second OCC period.19.The network device of claim 18, wherein:the UCI multiplexing occurs in a set of slots of the second OCC period; orthe UCI multiplexing occurs in a subset of the set of slots of the second OCC period.20.The network device of claim 14, wherein the network device is caused to determine the UCI handling by:based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, (ii) the one or more slots do not include a first slot of the OCC period, and (iii) the OCC period is a last OCC period within a set of PUSCH repetitions, determining that the UCI is dropped.21.The network device of claim 14, wherein the PUSCH repetitions are associated with a first PUSCH transmission, and the network device is caused to determine the UCI handling by:based on determining that (i) in case of PUSCH repetitions without OCC, the UCI multiplexing would occur in one or more slots of an OCC period, (ii) the one or more slots do not include a first slot of the OCC period, and (iii) the OCC period is a last OCC period within a set of PUSCH repetitions, determining that the UCI transmission is postponed to a physical uplink control channel (PUCCH) transmission or is multiplexed to a second PUSCH transmission.22.The network device of claim 21, wherein:the second PUSCH transmission is a subsequent PUSCH transmission;the second PUSCH transmission is a nth PUSCH transmission after the first PUSCH transmission;the second PUSCH transmission is configured with OCC;the second PUSCH transmission is configured without OCC;the second PUSCH transmission is configured with PUSCH repetitions; orthe second PUSCH transmission is configured without PUSCH repetitions.23.The network device of claim 21 or 22, wherein the UCI is to be multiplexed in the second PUSCH transmission, and the network device is further caused to:based on determining that OCC is enabled for the second PUSCH transmission, determine that the UCI is multiplexed in a first OCC period of the second PUSCH transmission; orbased on determining that OCC is not enabled for the second PUSCH transmission, determine that the UCI is multiplexed in the second PUSCH transmission.24.The network device of any of claims 14-23, wherein the network device is further caused to:transmit, to the terminal device, assistance information indicating whether to perform the specific UCI handling, wherein the specific UCI handling is determined by the network device based on determining that the assistance information indicates to perform the UCI handling.25.The network device of claim 24, wherein:the assistance information indicates whether multiple terminal devices are operating in parallel where network is using the OCC on PUSCH; orthe assistance information comprises a flag on activation or deactivation of the UCI handling.26.The network device of any of claims 14-25, wherein the network device is further caused to:prevent from scheduling a hybrid automatic repeat request acknowledgement (HARQ-ACK) of physical downlink share channel (PDSCH) based on determining that transmission would occur in a slot other than a first slot in a last OCC period.27.A method comprising:based on determining that uplink control information (UCI) multiplexing occurs on physical uplink shared channel (PUSCH) repetitions with orthogonal cover code (OCC) , determining UCI handling based on at least one slot where the UCI multiplexing would occur without OCC; andtransmitting the PUSCH repetitions based on the determined UCI handling.28.A method comprising:based on determining that uplink control information (UCI) multiplexing occurs on physical uplink shared channel (PUSCH) repetitions with orthogonal cover code (OCC) , determining UCI handling by a terminal device based on at least one slot where the UCI multiplexing would occur without OCC; andreceiving, from the terminal device, the PUSCH repetitions based on the determined UCI handling.29.An apparatus comprising:means for, based on determining that uplink control information (UCI) multiplexing occurs on physical uplink shared channel (PUSCH) repetitions with orthogonal cover code (OCC) , determining UCI handling based on at least one slot where the UCI multiplexing would occur without OCC; andmeans for transmitting the PUSCH repetitions based on the determined UCI handling.30.An apparatus comprising:means for, based on determining that uplink control information (UCI) multiplexing occurs on physical uplink shared channel (PUSCH) repetitions with orthogonal cover code (OCC) , determining UCI handling by a terminal device based on at least one slot where the UCI multiplexing would occur without OCC; andmeans for receiving, from the terminal device, the PUSCH repetitions based on the determined UCI handling.31.A non-transitory computer readable medium comprising program instructions stored thereon for performing at least the method of claim 27 or 28.
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