WO2024036621A1 - Sélection d'autorisation de liaison montante pour économie d'énergie d'un équipement utilisateur - Google Patents

Sélection d'autorisation de liaison montante pour économie d'énergie d'un équipement utilisateur Download PDF

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Publication number
WO2024036621A1
WO2024036621A1 PCT/CN2022/113685 CN2022113685W WO2024036621A1 WO 2024036621 A1 WO2024036621 A1 WO 2024036621A1 CN 2022113685 W CN2022113685 W CN 2022113685W WO 2024036621 A1 WO2024036621 A1 WO 2024036621A1
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WIPO (PCT)
Prior art keywords
transmission
grants
uplink
grant
overlapped
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PCT/CN2022/113685
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English (en)
Inventor
Chunli Wu
Benoist Pierre Sebire
Jorma Johannes Kaikkonen
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Nokia Shanghai Bell Co., Ltd.
Nokia Solutions And Networks Oy
Nokia Technologies Oy
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Application filed by Nokia Shanghai Bell Co., Ltd., Nokia Solutions And Networks Oy, Nokia Technologies Oy filed Critical Nokia Shanghai Bell Co., Ltd.
Priority to PCT/CN2022/113685 priority Critical patent/WO2024036621A1/fr
Publication of WO2024036621A1 publication Critical patent/WO2024036621A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload

Definitions

  • Embodiments of the present disclosure generally relate to the field of telecommunication and in particular to devices, methods, apparatuses and computer readable storage media of uplink (UL) grant selection for User Equipment (UE) .
  • UL uplink
  • UE User Equipment
  • the 3rd Generation Partnership Project (3GPP) initiates a study on XR (such as Augmented Reality (AR) , Virtual Reality (VR) , etc. ) enhancements for New Radio (NR) .
  • XR Augmented Reality
  • VR Virtual Reality
  • NR New Radio
  • the XR specific power saving techniques are to be studied to accommodate XR service characteristics such as periodicity, multiple flows, jitter, latency, reliability, etc.
  • example embodiments of the present disclosure provide a solution of UL grant selection for UE.
  • a first device comprising at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the first device at least to determine a plurality of UL grants for a transmission from the first device to a second device, the plurality of UL grants being overlapped or non-overlapped with each other in at least one of the following: a time domain, or a frequency domain.
  • the first device is further caused to select, from the plurality of UL grants, at least one UL grant to be used for the transmission based on data available for the transmission and respective Transport Block Sizes (TBSs) corresponding to the plurality of grant and transmit the data on the at least one UL grant.
  • TBSs Transport Block Sizes
  • a second device comprising at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the second device at least to configure a plurality of UL grants for a transmission from the first device to a second device, the plurality of UL grants being overlapped or non-overlapped with each other in at least one of the following: a time domain, or a frequency domain.
  • the second device is further caused to receive data transmission from the first device on at least one UL grant.
  • the method comprises determining a plurality of UL grants for a transmission from the first device to a second device, the plurality of UL grants being overlapped or non-overlapped with each other in at least one of the following: a time domain, or a frequency domain.
  • the method further comprises selecting, from the plurality of UL grants, at least one UL grant to be used for the transmission based on data available for the transmission and respective TBSs corresponding to the plurality of grant and transmitting the data on the at least one UL grant.
  • the method comprises configuring a plurality of UL grants for a transmission from the first device to a second device, the plurality of UL grants being overlapped or non-overlapped with each other in at least one of the following: a time domain, or a frequency domain and receiving data transmission from the first device on at least one UL grant.
  • an apparatus comprising means for determining a plurality of UL grants for a transmission from the first device to a second device, the plurality of UL grants being overlapped or non-overlapped with each other in at least one of the following: a time domain, or a frequency domain; means for selecting, from the plurality of UL grants, at least one UL grant to be used for the transmission based on data available for the transmission and respective TBSs corresponding to the plurality of grant and means for transmitting the data on the at least one UL grant.
  • an apparatus comprising means for configuring a plurality of UL grants for a transmission from the first device to a second device, the plurality of UL grants being overlapped or non-overlapped with each other in at least one of the following: a time domain, or a frequency domain and means for receiving data transmission from the first device on at least one UL grant.
  • a computer readable medium having a computer program stored thereon which, when executed by at least one processor of a device, causes the device to carry out the method according to the third aspect or the fourth aspect.
  • FIG. 1 illustrates an example environment in which example embodiments of the present disclosure may be implemented
  • FIG. 2 shows a signaling chart illustrating a process of UL grant selection for UE according to some example embodiments of the present disclosure
  • FIG. 3 shows a flowchart of an example method of UL grant selection for UE according to some example embodiments of the present disclosure
  • FIG. 4 shows a flowchart of an example method of UL grant selection for UE according to some example embodiments of the present disclosure
  • FIG. 5 shows a simplified block diagram of a device that is suitable for implementing example embodiments of the present disclosure.
  • FIG. 6 shows a block diagram of an example computer readable medium in accordance with some embodiments of the present disclosure.
  • 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.
  • first, ” “second” and 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. 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.
  • the term “and/or” includes any and all combinations of one or more of the listed terms.
  • performing a step “in response to A” does not indicate that the step is performed immediately after “A” occurs and one or more intervening steps may be included.
  • circuitry may refer to one or more or all of the following:
  • 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.
  • 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.
  • the term “communication network” refers to a network following any suitable communication standards, such as New Radio (NR) , 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) and so on.
  • NR New Radio
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • WCDMA Wideband Code Division Multiple Access
  • HSPA High-Speed Packet Access
  • NB-IoT Narrow Band Internet of Things
  • 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 first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) communication protocols, and/or any other protocols either currently known or to be developed in the future.
  • suitable generation communication protocols including, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) 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
  • 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) , an NR NB (also referred to as a gNB) , a Remote Radio Unit (RRU) , a radio header (RH) , a remote radio head (RRH) , a relay, an Integrated Access and Backhaul (IAB) node, a low power node such as a femto, a pico, a non-terrestrial network (NTN) or non-ground network device such as a satellite network device, a low earth orbit (LEO) satellite and a geosynchronous earth orbit (GEO) satellite, an aircraft network device, and so forth, depending on the applied terminology and technology
  • radio access network (RAN) split architecture includes a Centralized Unit (CU) and a Distributed Unit (DU) at an IAB donor node.
  • An IAB node includes a Mobile Terminal (IAB-MT) part that behaves like a UE toward the parent node, and a DU part of an IAB node behaves like a base station toward the next-hop IAB node.
  • IAB-MT Mobile Terminal
  • terminal device refers to any end device that may be capable of wireless communication.
  • 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) .
  • UE user equipment
  • SS Subscriber Station
  • MS Mobile Station
  • AT Access Terminal
  • 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 (e.g., remote surgery) , an industrial device and applications (e.g., 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/
  • the terminal device may also correspond to a Mobile Termination (MT) part of an IAB node (e.g., a relay node) .
  • MT Mobile Termination
  • IAB node e.g., a relay node
  • the terms “terminal device” , “communication device” , “terminal” , “user equipment” and “UE” may be used interchangeably.
  • resource may refer to any resource for performing a communication, for example, a communication between a terminal device and a network device, such as a resource in time domain, a resource in frequency domain, a resource in space domain, a resource in code domain, or any other resource enabling a communication, and the like.
  • a resource in both frequency domain and time domain will be used as an example of a transmission resource for describing some example embodiments of the present disclosure. It is noted that example embodiments of the present disclosure are equally applicable to other resources in other domains.
  • FIG. 1 shows an example communication network 100 in which embodiments of the present disclosure may be implemented.
  • the communication network 100 may comprise a terminal device 110.
  • the terminal device 110 may also be referred to as a UE 110 or a first device 110.
  • the communication network 100 may further comprise a network device 120.
  • the network device 120 may also be referred to as a gNB 120 or a second device 120.
  • the terminal device 110 may communicate with the network device 120.
  • the communication network 100 may include any suitable number of network devices and terminal devices.
  • links from the network device 120 to the terminal device 110 may be referred to as a downlink (DL)
  • links from the terminal device 110 to the network device 120 may be referred to as an uplink (UL)
  • the network device 120 is a transmitting (TX) device (or a transmitter) and the terminal device 110 is a receiving (RX) device (or receiver)
  • the terminal device 110 is a TX device (or transmitter) and the network device 120 is a RX device (or a receiver) .
  • Communications in the communication environment 100 may be implemented according to any proper communication protocol (s) , includes, but not limited to, cellular communication protocols of the first generation (1G) , the second generation (2G) , the third generation (3G) , the fourth generation (4G) , the fifth generation (5G) , the sixth generation (6G) , and 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.
  • IEEE Institute for Electrical and Electronics Engineers
  • the communication may utilize any proper wireless communication technology, includes 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.
  • CDMA Code Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • MIMO Multiple-Input Multiple-Output
  • OFDM Orthogonal Frequency Division Multiple
  • DFT-s-OFDM Discrete Fourier Transform spread OFDM
  • XR Enhancements especially the XR-specific Power Saving is to be studied to accommodate XR service characteristics, which may focus on Connected mode Discontinuous Reception (DRX) enhancement and Physical Downlink Control Channel (PDCCH) monitoring enhancement.
  • DRX Connected mode Discontinuous Reception
  • PDCCH Physical Downlink Control Channel
  • UL grant may be partial skipped to save power when there is not that much data to be transmitted.
  • the UE is allowed to skip the whole UL grant when there is nothing to be transmitted or transmit with the full resource with padding added even if not enough data.
  • additional indication e.g., Uplink Control Information (UCI) may be need for the gNB to be able to decode the Transport Block (TB) . That is, the UE may have to inform the gNB of which resources in the UL grant have been utilized or skipped. The UE may indicate the utilized or skipped grants through control signalling. Otherwise, the gNB may have to grant the UE with multiple Configured Grants (CGs) or Dynamic Grants (DGs) .
  • CGs Configured Grants
  • DGs Dynamic Grants
  • the complexity for the blind decoding of the gNB may be increased.
  • the gNB may not know how much resources are required for transmitting the data due to rather sparse Buffer Status Report (BSR) granularity and delay, and therefore the activation of the correct resources may not be guaranteed.
  • BSR Buffer Status Report
  • the UE may discard the out-of-date data due to the expiry of the related Packet Data Convergence Protocol (PDCP) discard timer if the new data is coming.
  • PDCP Packet Data Convergence Protocol
  • the gNB configures a plurality of UL grants for a transmission from the UE to the gNB 120.
  • the plurality of UL grants are configured to be overlapped or non-overlapped with each other in the frequency domain and/or the time domain.
  • the UE determines the plurality of UL grants and selects at least one UL grant from the plurality of UL grants based on data available for the transmission and respective TBSs corresponding to the plurality of uplink grants.
  • the UE then transmits the data on the at least one uplink grant. In this way, the power saving may be achieved at the UE side without increasing the complexity at the network side.
  • FIG. 2 shows a signaling chart 200 for communication according to some example embodiments of the present disclosure.
  • the signaling chart 200 involves a UE 110 and a gNB 120.
  • FIG. 1 shows the signaling chart 200.
  • a single UE 110 is illustrated in FIG. 2, it would be appreciated that there may be a plurality of UEs performing similar operations as described with respect to the UE 110 below.
  • the gNB 120 may configure 202 a plurality of candidate UL grants available for a UL data transmission from the UE 110.
  • the plurality of candidate UL grants configured by the gNB 120 may refer to CGs or DGs.
  • the plurality of candidate UL grants may be overlapped or partially overlapped with each other in the frequency domain and/or in the time domain. In some other embodiments, the plurality of candidate UL grants may also be non-overlapped with each other in the frequency domain and/or in the time domain.
  • the gNB 120 may also configure different demodulation reference signals (DMRS) for each candidate UL grant, which may cause the gNB 120 to be able to decode the correct UL grant that the UE 110 has used for the UL transmission without blind decoding.
  • DMRS demodulation reference signals
  • different DMRS sequence initialization may be used.
  • the plurality of candidate UL grants may be configured with different TBSs.
  • the plurality of candidate UL grants may correspond to multiple transmission occasions per cycle from which the UE 110 may select for the data transmission.
  • the gNB 120 may indicate 204 to the UE 110 the candidate UL grants available for the UL data transmission of the UE 110 allocated by the gNB 120.
  • the UE 110 may determine which UL grant (s) may be taken in account for the data transmission.
  • all candidate UL grants allocated by the gNB 120 may be considered by the UE 110 for the UL data transmission.
  • these candidate UL grants may be overlapped or non-overlapped with each other in the frequency domain and/or in the time domain.
  • the UE 110 may determine that a portion of candidate UL grants are allowed to be used for the UL data transmission based on a timing restriction.
  • the timing restriction may be referred to as a window in the time domain, e.g., within x ms. That is, a subset of candidate UL grants within the window may be considered by the UE 110 for the UL data transmission.
  • the timing restriction or the window in the time domain may be preconfigured. Alternatively or optionally, the timing restriction or the window in the time domain may be determined by the gNB 120. For example, the gNB 120 may determine a UE specific timing restriction. It is also possible that the gNB 120 may determine the timing restriction per a logical channel (LCH) , per a Quality of Service (QoS) flow, per Protocol Data Unit (PDU) set, per CG configuration or for multiple CG configurations.
  • LCH logical channel
  • QoS Quality of Service
  • PDU Protocol Data Unit
  • the UE 110 may then select 206 at least one UL grant to be used for the UL data transmission, for example, from the candidate UL grants allocated by the gNB 120 or a subset of them.
  • the UE 110 may select at least one UL grant to be used for the UL data transmission based on the data available for the UL transmission, i.e., how much data is to be transmitted in the transmission, which may include possible medium access control-control element (MAC-CE) and corresponding sub-header (s) .
  • MAC-CE medium access control-control element
  • s sub-header
  • the UE 110 may determine respective TBSs configured for the candidate UL grants and select a UL grant having the TBS that matches the size of the data available for the UL transmission.
  • the selected UL grant may be configured with a closest TBS with the size of the data available for the UL transmission, i.e., equal to the data size or larger than the data size.
  • the UE 110 may determine respective TBSs for candidate UL grants based on the modulation and coding scheme information and the amount of the allocated physical resources.
  • the UE 110 may choose a UL grant configured with the largest TBS in the candidate UL grants or choose a first occurring UL grant.
  • other UL grants for example the subsequent occurring UL grant (s)
  • the candidate UL grants may also be chosen for the UL transmission because the UL grant configured with the largest TBS or first occurring UL grant may not have enough TBS for the data available for the UL transmission.
  • the UE 110 may select at least one UL grant to be used for the UL data transmission based on delay budget of the UL traffic, which may be achieved by select the at least one UL grant within a time window.
  • the UE 110 may also consider the priority (ies) of the LCH (s) with data available for transmission and logical channel prioritization restrictions for the LCH (s) as well when determining the plurality of UL grants.
  • the UE 110 selects at least one UL grant from the candidate UL grants, it may also consider reliability of the UL grants (e.g., based on the modulation coding scheme) .
  • the UE 110 may transmit 208 the data to the gNB 120 by using the at least one UL grant.
  • the UE 110 may also transmit its buffer status report to indicate to the gNB 120, for example, there is no more data to the transmitted.
  • the gNB 120 may use different DMRSs to decode the received transmission, for example, in a case where different DMRSs are configured for the candidate UL grants overlapped with each other.
  • the gNB 120 may also receive the data by the blind detection.
  • the power saving may be reached by select suitable UL grant (s) for the data transmission. Meanwhile, a corresponding mechanism for the reception and decoding is achieved without increasing the network complexity.
  • FIG. 3 shows a flowchart of an example method 300 of UL grant selection for UE according to some example embodiments of the present disclosure.
  • the method 300 may be implemented at the first device 110 as shown in FIG. 1. For the purpose of discussion, the method 300 will be described with reference to FIG. 1.
  • the first device 110 determines a plurality of uplink grants for a transmission from the first device to a second device, the plurality of uplink grants being overlapped or non-overlapped with each other in at least one of a time domain, or a frequency domain.
  • the plurality of uplink grants are configured by the second device with different DMRSs if the plurality of uplink grants are overlapped or partially overlapped.
  • the first device may determine the plurality of uplink grants from the set of candidate grants based on a window in the time domain.
  • the window in the time domain is preconfigured or configured to the first device by the second device based on at least one of the first device, a LCH associated with the transmission, a QoS associated with the transmission, a PDU set of the first device, or respective configuration of at least one configured grant in the set of candidate grants.
  • the first device selects, from the plurality of uplink grants, at least one uplink grant to be used for the transmission based on data available for the transmission and respective TBSs corresponding to the plurality of uplink grants.
  • the first device may select the first grant as an uplink grant to be used for the transmission.
  • the first device may select, from the plurality of uplink grants, at least one uplink grant to be used for the transmission comprising at least one of an uplink grant corresponding to the largest TBS in the plurality of uplink grants, or an uplink grant that first occurred in the plurality of uplink grants.
  • a TBS matches the size of the data available for the transmission comprises one of the TBS equals to the size of the data available for the transmission, or the TBS exceeds the size of the data available for the transmission and has a smallest difference from the size of the data.
  • the first device may select, from the plurality of uplink grants, one or more uplink grants as the at least one uplink grant to be used for the transmission other than the uplink grant that has been selected.
  • the first device may determine a transmission window based on a delay requirement of the transmission; and select, from the plurality of uplink grants, at least one uplink grant to be used based on the determined transmission window.
  • the first device transmits the data on the at least one uplink grant.
  • the data available for the transmission comprises at least one of the following: data stored in a buffer of the first device, medium access control-control element, one or more sub headers, a buffer status report or a padding buffer status report.
  • the first device may comprise a terminal device and the second device may comprise a network device.
  • FIG. 4 shows a flowchart of an example method 400 of UL grant selection for UE according to some example embodiments of the present disclosure.
  • the method 400 may be implemented at the second device 120 as shown in FIG. 1.
  • the method 400 will be described with reference to FIG. 1.
  • the second device configures at least a plurality of uplink grants for transmission from a first device to the second device, the plurality of uplink grants being overlapped or non-overlapped with each other in at least one of a time domain or a frequency domain.
  • the second device may configure the plurality of uplink grants with different TBSs.
  • the second device may configure different DMRSs for the plurality of uplink grants if the plurality of uplink grants are overlapped or partially overlapped.
  • the second device may determine a window in the time domain associated with an uplink grant determination by the first device for the transmission if a set of candidate grants available for the transmission are allocated by the second device and the set of candidate grants are non-overlapped with each other in the time domain or partially overlapped with each other in the time domain.
  • the window in the time domain is preconfigured or configured to the first device by the second device based on at least one of the first device, a LCH associated with the transmission, a QoS associated with the transmission, a PDU set of the first device, or respective configuration of at least one configured grant in the set of candidate grants.
  • the second device receives data transmission from the first device on at least one uplink grant.
  • the at least one uplink grant comprises a plurality of uplink grants
  • the second device may receive the data based on respective demodulation reference signals associated with the at least one uplink grant.
  • the first device comprises a terminal device and the second device comprises a network device.
  • an apparatus capable of performing the method 300 may include means for performing the respective steps of the method 300.
  • the means may be implemented in any suitable form.
  • the means may be implemented in a circuitry or software module.
  • the apparatus comprises means for determining a plurality of UL grants for a transmission from the first device to a second device, the plurality of UL grants being overlapped or non-overlapped with each other in at least one of the following: a time domain, or a frequency domain; means for selecting, from the plurality of UL grants, at least one UL grant to be used for the transmission based on data available for the transmission and respective TBSs corresponding to the plurality of grant and means for transmitting the data on the at least one UL grant.
  • the plurality of uplink grants are configured by the second device with different DMRSs if the plurality of uplink grants are overlapped or partially overlapped.
  • the means for determining the plurality of uplink grants comprises means for in accordance with a determination that a set of candidate grants available for the transmission are allocated by the second device and the set of candidate grants are non-overlapped with each other in the time domain or partially overlapped with each other in the time domain, determining the plurality of uplink grants from the set of candidate grants based on a window in the time domain.
  • the window in the time domain is preconfigured or configured to the first device by the second device based on at least one of the first device, a LCH associated with the transmission, a QoS associated with the transmission, a PDU set of the first device, or respective configuration of at least one configured grant in the set of candidate grants.
  • the means for selecting the at least one uplink grant comprises means for, in accordance with a determination that a first TBS corresponding to a first grant in the plurality of uplink grants matches a size of the data available for the transmission, selecting the first grant as an uplink grant to be used for the transmission.
  • the means for selecting the at least one uplink grant comprises means for, in accordance with a determination that no TBS in the respective TBSs matches the size of the data available for the transmission, selecting, from the plurality of uplink grants, at least one uplink grant to be used for the transmission comprising at least one of the following: an uplink grant corresponding to the largest TBS in the plurality of uplink grants, or an uplink grant that first occurred in the plurality of uplink grants.
  • a TBS matches the size of the data available for the transmission comprises one of the TBS equals to the size of the data available for the transmission, or the TBS exceeds the size of the data available for the transmission and has a smallest difference from the size of the data.
  • the apparatus may further comprise means for selecting, from the plurality of uplink grants, one or more uplink grants as the at least one uplink grant to be used for the transmission other than the uplink grant that has been selected.
  • the means for selecting the at least one uplink grant comprises means for determining a transmission window based on a delay requirement of the transmission; and means for selecting, from the plurality of uplink grants, at least one uplink grant to be used based on the determined transmission window.
  • the data available for the transmission comprises at least one of the following: data stored in a buffer of the first device, medium access control-control element, one or more sub headers, a buffer status report or a padding buffer status report.
  • the first device may comprise a terminal device and the second device may comprise a network device.
  • an apparatus capable of performing the method 400 may include means for performing the respective steps of the method 400.
  • the means may be implemented in any suitable form.
  • the means may be implemented in a circuitry or software module.
  • the apparatus comprises means for configuring a plurality of UL grants for a transmission from the first device to a second device, the plurality of UL grants being overlapped or non-overlapped with each other in at least one of the following: a time domain, or a frequency domain and means for receiving data transmission from the first device on at least one UL grant.
  • the apparatus may further comprise means for configuring the plurality of uplink grants with different Transport Block Sizes, TBSs.
  • the apparatus may further comprise means for configuring different demodulation reference signals for the plurality of uplink grants if the plurality of uplink grants are overlapped or partially overlapped.
  • the apparatus may further comprise means for determining a window in the time domain associated with an uplink grant determination by the first device for the transmission if a set of candidate grants available for the transmission are allocated by the second device and the set of candidate grants are non-overlapped with each other in the time domain or partially overlapped with each other in the time domain.
  • the window in the time domain is preconfigured or configured to the first device by the second device based on at least one of the first device, a LCH associated with the transmission, a QoS associated with the transmission, a PDU set of the first device, or respective configuration of at least one configured grant in the set of candidate grants.
  • the at least one uplink grant comprises a plurality of uplink grants
  • the means for receiving the data comprises means for receiving the data based on respective demodulation reference signals associated with the at least one uplink grant.
  • the first device comprises a terminal device and the second device comprises a network device.
  • FIG. 5 is a simplified block diagram of a device 500 that is suitable for implementing example embodiments of the present disclosure.
  • the device 500 may be provided to implement a communication device, for example, the terminal device 110 or the network device 120 as shown in FIG. 1.
  • the device 500 includes one or more processors 510, one or more memories 520 coupled to the processor 510, and one or more communication modules 540 coupled to the processor 510.
  • the communication module 540 is for bidirectional communications.
  • the communication module 540 has one or more communication interfaces to facilitate communication with one or more other modules or devices.
  • the communication interfaces may represent any interface that is necessary for communication with other network elements.
  • the communication module 540 may include at least one antenna.
  • the processor 510 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 500 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.
  • the memory 520 may include one or more non-volatile memories and one or more volatile memories.
  • the non-volatile memories include, but are not limited to, a Read Only Memory (ROM) 524, an electrically programmable read only memory (EPROM) , a flash memory, a hard disk, a compact disc (CD) , a digital video disk (DVD) , an optical disk, a laser disk, and other magnetic storage and/or optical storage.
  • Examples of the volatile memories include, but are not limited to, a random access memory (RAM) 522 and other volatile memories that will not last in the power-down duration.
  • a computer program 530 includes computer executable instructions that are executed by the associated processor 510.
  • the instructions of the program 530 may include instructions for performing operations/acts of some example embodiments of the present disclosure.
  • the program 530 may be stored in the memory, e.g., the ROM 524.
  • the processor 510 may perform any suitable actions and processing by loading the program 530 into the RAM 522.
  • the example embodiments of the present disclosure may be implemented by means of the program 530 so that the device 500 may perform any process of the disclosure as discussed with reference to FIG. 2 to FIG. 4.
  • the example embodiments of the present disclosure may also be implemented by hardware or by a combination of software and hardware.
  • the program 530 may be tangibly contained in a computer readable medium which may be included in the device 500 (such as in the memory 520) or other storage devices that are accessible by the device 500.
  • the device 500 may load the program 530 from the computer readable medium to the RAM 522 for execution.
  • the computer readable medium may include any types of non-transitory storage medium, such as ROM, EPROM, a flash memory, a hard disk, CD, DVD, and the like.
  • 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) .
  • FIG. 6 shows an example of the computer readable medium 600 which may be in form of CD, DVD or other optical storage disk.
  • the computer readable medium 800 has the program 530 stored thereon.
  • 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.
  • Some example embodiments of the present disclosure also provides at least one computer program product tangibly stored on a computer readable medium, such as a non-transitory computer readable medium.
  • the computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target physical or virtual processor, to carry out any of the methods as described above.
  • 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.
  • Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages.
  • the program code 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 code, 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.
  • the computer program code 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.
  • 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.

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Abstract

Des modes de réalisation de la présente divulgation concernent des dispositifs, des procédés, des appareils et des supports de stockage lisibles par ordinateur de sélection d'autorisation de liaison montante (UL) pour un équipement utilisateur (UE). Le procédé consiste à déterminer une pluralité d'autorisations UL pour une transmission du premier dispositif à un deuxième dispositif, la pluralité d'autorisations UL se chevauchant ou ne se chevauchant pas l'une avec l'autre dans au moins l'un des éléments suivants : un domaine temporel, ou un domaine fréquentiel. Le procédé consiste en outre à sélectionner, parmi la pluralité d'autorisations UL, au moins une autorisation UL à utiliser pour la transmission sur la base de données disponibles pour la transmission et des tailles de bloc de transport (TBS) respectives correspondant à la pluralité d'autorisations et à transmettre les données sur la ou les autorisations UL. De cette manière, l'économie d'énergie peut être obtenue côté UE sans augmenter la complexité du côté réseau.
PCT/CN2022/113685 2022-08-19 2022-08-19 Sélection d'autorisation de liaison montante pour économie d'énergie d'un équipement utilisateur WO2024036621A1 (fr)

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