WO2024093111A1 - Dispositif, procédé et support pour communications de liaison latérale - Google Patents

Dispositif, procédé et support pour communications de liaison latérale Download PDF

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Publication number
WO2024093111A1
WO2024093111A1 PCT/CN2023/084788 CN2023084788W WO2024093111A1 WO 2024093111 A1 WO2024093111 A1 WO 2024093111A1 CN 2023084788 W CN2023084788 W CN 2023084788W WO 2024093111 A1 WO2024093111 A1 WO 2024093111A1
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WO
WIPO (PCT)
Prior art keywords
psfch
psfchs
bandwidth
terminal device
resource blocks
Prior art date
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PCT/CN2023/084788
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English (en)
Inventor
Zhennian SUN
Haipeng Lei
Xiaodong Yu
Xin Guo
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Lenovo (Beijing) Limited
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Application filed by Lenovo (Beijing) Limited filed Critical Lenovo (Beijing) Limited
Priority to PCT/CN2023/084788 priority Critical patent/WO2024093111A1/fr
Publication of WO2024093111A1 publication Critical patent/WO2024093111A1/fr

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Classifications

    • 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
    • H04L5/0058—Allocation criteria
    • H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority

Definitions

  • Embodiments of the present disclosure generally relate to the field of communication, and in particular to a terminal device, a method, and a non-transitory computer readable medium for sidelink communications.
  • telecommunications networks such as long term evolution (LTE) networks or new radio (NR) networks
  • LTE long term evolution
  • NR new radio
  • PC5 proximity services Communication 5
  • UEs may communicate with each other directly via a PC5 wireless interface on a sidelink channel.
  • sidelink communications may obtain a plurality of benefits, such as coverage extension, service reliability enhancement, and potential low latency.
  • an occupied channel bandwidth (OCB) requirement for example, 80%of the bandwidth of the channel, on the unlicensed sidelink channel, band, or spectrum needs to fulfill. For example, if the OCB requirement is not fulfilled, other contending terminal devices, for example, the terminal devices allocated with the same unlicensed resource pool, may consider the unlicensed sidelink channel, band, or spectrum as clear and further use this channel, band or spectrum. Otherwise, other contending devices may consider the unlicensed sidelink channel, band or spectrum as occupied. In turn, the tradeoff between the sidelink transmission efficiency and the OCB requirement is a key aspect.
  • embodiments of the present disclosure provide a solution for sidelink communications.
  • a terminal device comprising a processor and a transceiver coupled to the processor.
  • the processor is configured to select, from a first set of physical sidelink feedback channels (PSFCHs) , a second set of PSFCHs.
  • the processor is configured to determine whether a first bandwidth or a second bandwidth is above a bandwidth threshold.
  • the first bandwidth is between dedicated resource blocks for two PSFCHs of the second set of PSFCHs
  • the second bandwidth is between a dedicated resource block for a PSFCH of the second set of PSFCHs and a common resource block of a set of common resource blocks for PSFCH.
  • the processor is further configured to drop at least a portion of the set of common resource blocks and transmit the second set of PSFCHs, based on determining that the first bandwidth or the second bandwidth is above the bandwidth threshold.
  • a method performed by a terminal device comprises selecting, from a first set of physical sidelink feedback channels (PSFCHs) , a second set of PSFCHs.
  • the method comprises determining whether a first bandwidth or a second bandwidth is above a bandwidth threshold.
  • the first bandwidth is between dedicated resource blocks for two PSFCHs of the second set of PSFCHs
  • the second bandwidth is between a dedicated resource block for a PSFCH of the second set of PSFCHs and a common resource block of a set of common resource blocks for PSFCH.
  • the method further comprises based on determining that the first bandwidth or the second bandwidth is above the bandwidth threshold, dropping at least a portion of the set of common resource blocks and transmitting the second set of PSFCHs.
  • a non-transitory computer readable medium having program instructions stored thereon.
  • the program instructions when executed by an apparatus, causing the apparatus at least to select, from a first set of physical sidelink feedback channels (PSFCHs) , a second set of PSFCHs.
  • the apparatus is caused to determine whether a first bandwidth or a second bandwidth is above a bandwidth threshold.
  • the first bandwidth is between dedicated resource blocks for two PSFCHs of the second set of PSFCHs
  • the second bandwidth is between a dedicated resource block for a PSFCH of the second set of PSFCHs and a common resource block of a set of common resource blocks for PSFCH.
  • the apparatus is further caused to drop at least a portion of the set of common resource blocks and transmit the second set of PSFCHs based on determining that the first bandwidth or the second bandwidth is above the bandwidth threshold.
  • Fig. 1A illustrates a schematic diagram of a communication environment in which some embodiments of the present disclosure can be implemented
  • Fig. 1B illustrates an example of dedicated resources and a common interlace for transmitting Physical Sidelink Feedback Channel (PSFCH) ;
  • PSFCH Physical Sidelink Feedback Channel
  • Fig. 1C illustrates another example of dedicated resources and common Resource Blocks (RBs) for transmitting Physical Sidelink Feedback Channel (PSFCH) ;
  • Fig. 2 illustrates a flowchart of an example method for sidelink communications in accordance with some other embodiments of the present disclosure
  • Fig. 3 illustrates an example of dedicated resources and the droppings of the common interlace in accordance with some embodiments of the present disclosure
  • Fig. 4A illustrates an example of dedicated resources and the droppings of the set of common resource blocks in accordance with some embodiments of the present disclosure
  • Fig. 4B illustrates an example of dedicated resources and the droppings of at least a portion of the set of common resource in accordance with some embodiments of the present disclosure
  • Fig. 4C illustrates another example of dedicated resources and the droppings of at least a portion of the set of resource blocks in accordance with some embodiments of the present disclosure
  • Fig. 5 illustrates an example of the selection of a PSFCH pair in accordance with some embodiments of the present disclosure
  • Fig. 6A illustrates another example of the selection of a PSFCH pair in accordance with some embodiments of the present disclosure
  • Fig. 6B illustrates an example of the selection of a PSFCH and the droppings of at least a portion of the set of resource blocks in accordance with some embodiments of the present disclosure
  • Fig. 7 illustrates a simplified block diagram of an apparatus that is suitable for implementing embodiments of the present disclosure.
  • references in the present disclosure to “one embodiment, ” “an example embodiment, ” “an embodiment, ” “some embodiments, ” and the like indicate that the embodiment (s) described may include a particular feature, structure, or characteristic, but it is not necessary that every embodiment includes the particular feature, structure, or characteristic. Moreover, such phrases do not necessarily refer to the same embodiment (s) . Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
  • first and second or the like may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element could also be termed as a second element, and similarly, a second element could also be termed as a first element, without departing from the scope of embodiments. As used herein, the term “and/or” includes any and all combinations of one or more of the listed terms.
  • the term “communication network” refers to a network following any suitable communication standards, such as, 5G 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.
  • 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.
  • 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.
  • Embodiments of the present disclosure may be applied in various communication systems. Given the rapid development in communications, there will also be future type communication technologies and systems in which the present disclosure may be embodied. It should not be seen as limiting the scope of the present disclosure to only the aforementioned systems.
  • the term “network device” generally refers to a node in a communication network via which a terminal device can access the communication network and receive 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) , a radio access network (RAN) node, an evolved NodeB (eNodeB or eNB) , a NR NB (also referred to as a gNB) , a Remote Radio Unit (RRU) , a radio header (RH) , an infrastructure device for a V2X (vehicle-to-everything) communication, a transmission and reception point (TRP) , a reception point (RP) , a remote radio head (RRH) , a relay, an integrated access and backhaul (IAB) node, a low power node such as a femto BS, a pico BS, and so forth, depending on
  • terminal device generally refers to any end device that may be capable of wireless communications.
  • a terminal device may also be referred to as a communication device, a user equipment (UE) , an end user device, a subscriber station (SS) , an unmanned aerial vehicle (UAV) , a portable subscriber station, a mobile station (MS) , or an access terminal (AT) .
  • UE user equipment
  • SS subscriber station
  • UAV unmanned aerial vehicle
  • MS mobile station
  • AT access terminal
  • the terminal device may include, but is not limited to, a mobile phone, a cellular phone, a smart phone, a voice over IP (VoIP) phone, a wireless local loop phone, a tablet, a wearable terminal device, a personal digital assistant (PDA) , a portable computer, a desktop computer, an image capture terminal device such as a digital camera, a gaming terminal device, a music storage and playback appliance, a vehicle-mounted wireless terminal device, a wireless endpoint, a mobile station, laptop-embedded equipment (LEE) , laptop-mounted equipment (LME) , a USB dongle, a smart device, 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 (for example, a remote surgery device) , an industrial device (for example, a robot and/or other wireless devices operating in an industrial and/or an automated processing chain
  • the term “resource, ” “transmission resource, ” “resource block, ” “physical resource block, ” “uplink resource, ” “downlink resource, ” or “sidelink resource” may refer to any resource, for example 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, used for performing a communication between a terminal device and a network device or between terminal devices.
  • a resource in both frequency and time domain will be used as an example of a transmission resource for describing some embodiments of the present disclosure. It is noted that embodiments of the present disclosure equally apply to other resources in other domains.
  • an interlace may refer to a plurality of resource blocks in a Resource Block (RB) set, and the plurality of resource blocks may be distributed in the RB set, for example, in a comb form.
  • RB Resource Block
  • the interlace, common resource interlace, and common interlace may be used interchangeably, without any limitation.
  • dedicated resources may refer to resource blocks that are used for transmitting the useful data information of a sidelink channel, for example, PSFCH.
  • common resources may refer to resource blocks that are used for meeting the OCB requirement together with the dedicated resources.
  • the terminal device may only transmit null or redundant signal with a certain transmitting power on the common resources instead of transmitting useful data information of a sidelink channel on the common resources.
  • the common resources may comprise the common interlace as discussed above, and/or resource blocks at the boundaries of the RB set.
  • the terminal device involved in the sidelink communication may determine or be allocated with or be configured with one or more dedicated resources and a common interlace. Moreover, the bandwidth across resource blocks that are included in the common interlace can fulfill the bandwidth requirement of the OCB requirement. The details of this solution will be further described with reference to Fig. 1B.
  • the terminal device involved in the sidelink communication may determine or be allocated with or be configured with one or more dedicated resources and common resource blocks at boundaries of the RB set. In this way, the bandwidth between common resource blocks at boundaries of the RB set can fulfill the bandwidth requirement of the OCB requirement.
  • the above solutions may be also expressed as below: following alternatives are agreed to be down-selected for the PSFCH design to meet the OCB requirement.
  • the terminal device should transmit both the dedicated resources for the PSFCH and the common resources.
  • this may cause unnecessary power consumption and inter-resource interference.
  • the details regarding the possible unnecessary power consumption and inter-resource interference are further described as below. In some situations, the following technical issues are still to be solved.
  • sidelink HARQ feedback is a suitable way to achieve the high reliability of sidelink communication.
  • the sidelink HARQ feedback may be transmitted by transmitting the PSFCHs.
  • OCB occupied channel bandwidth
  • OCB requirement means that the occupied bandwidth of the transmission shall not be smaller than 80%of the whole LBT channel.
  • the legacy PSFCH is transmitted on one PRB, to meet the OCB requirement, some alternatives (for example, the solutions discussed above) are proposed and studied in RAN1 as in Section 2.
  • redundant signals and/or null signal may be transmitted on some resources, in order to meet the OCB requirement. Since the intention of such transmission is to meet the OCB requirement, for saving the resources of such transmission, all the UEs will transmit signals on these resources. This means that the resources for such purpose are common to the sidelink UEs. However, due to the resources are common to UEs, the total power on these resources will be accumulated, which may cause the waste of the sidelink UE’s transmitting power and higher inter-band emission (IBE) , thereby the interference caused by the higher IBE may occur.
  • IBE inter-band emission
  • the UE when multiple PSFCHs are to be transmitted, the UE is able to select a subset of PSFCHs based on the associated priority and UE’s capability that is the maximum number of simultaneous transmitting PSFCHs. Then, the UE may transmit the selected subset of PSFCHs at the same time. That is, one UE may need to transmit multiple PSFCHs in one PSFCH occasion.
  • the simultaneous PSFCH transmission may be also expressed as below:
  • a scheme for sidelink communications is provided.
  • a terminal device selects a second set of PSFCHs from a first set of PSFCHs. Then, the terminal device determines whether a first bandwidth or a second bandwidth is above a bandwidth threshold.
  • the first bandwidth is between dedicated resource blocks for two PSFCHs of the second set of PSFCHs
  • the second bandwidth is between a dedicated resource block for a PSFCH of the second set of PSFCHs and a common resource block of a set of common resource blocks for PSFCH.
  • the terminal device drops at least a portion of the set of common resource blocks and transmits the second set of PSFCHs, based on determining that the first bandwidth or the second bandwidth is above the bandwidth threshold.
  • Fig. 1A illustrates an example network environment 100 in which example embodiments of the present disclosure may be implemented.
  • the environment 100 which may be a part of a communication network, includes terminal devices and network devices.
  • the network environment 100 may include a terminal device 110 (which may be also referred to the first terminal device 110) and a terminal device 120 (which may be also referred to the second terminal device120) .
  • the first terminal device 110 and the second terminal device 120 may communicate with each other via sidelink channels.
  • the first terminal device 110 may transmit an acknowledge (ACK) or non-ACK message for a data transmission to the second terminal device 120, by transmitting the PSFCH to the second terminal device 120.
  • the terminal device may transmit multiple PSFCHs simultaneously.
  • the system 100 may include any suitable number of network devices and/or terminal devices adapted for implementing embodiments of the present disclosure.
  • Communications in the network environment 100 may be implemented according to any proper communication protocol (s) , comprising, but not limited to, the third generation (3G) , the fourth generation (4G) , the fifth generation (5G) , 5G-Advanced or beyond (6G) , 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.
  • s any proper communication protocol
  • s comprising, but not limited to, the third generation (3G) , the fourth generation (4G) , the fifth generation (5G) , 5G-Advanced or beyond (6G) , 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, comprising but not limited to: orthogonal frequency division multiplexing (OFDM) , time division multiplexing (TDM) , frequency division multiplexing (FDM) , code division multiplexing (CDM) , spatial division multiplexing (SDM) by means of beam-forming or multiple-input multiple-output (MIMO) transmission, carrier aggregation (CA) , dual connectivity (DC) , new radio unlicensed (NR-U) communication, Bluetooth, ZigBee, etc.
  • the communication may be of any type, comprising but not limited to: machine type communication (MTC) , enhanced mobile broadband (eMBB) , massive machine type communication (mMTC) , ultra-reliable low latency communication (URLLC) , etc.
  • MTC machine type communication
  • eMBB enhanced mobile broadband
  • mMTC massive machine type communication
  • URLLC ultra-reliable low latency communication
  • Fig. 1B illustrates an example of dedicated resources and a common interlace for transmitting PSFCH.
  • the terminal device may determine or be configured with or be allocated with one or more dedicated resources and a common interlace.
  • the common interlace comprises a plurality of resource blocks distributed in the RB set, so that the OCB requirement can be fulfilled based on the bandwidth crossing the resource blocks of the common interlace.
  • the resource blocks 120, 122 and 124 are a portion of the common interlace.
  • the terminal device may determine the dedicated resource block 125 for transmitting the data information of the one PSFCH and also transmit redundant signals on the common interlace.
  • the terminal device will transmit, per PSFCH, redundant signals on the same common interlace. This may cause the unnecessary power consumption and/or interference introduced by the accumulated IBE.
  • Fig. 1C illustrates another example of dedicated resources and common RBs for transmitting PSFCH.
  • the terminal device may determine or be configured with or be allocated with common resource blocks at boundaries of the RB set, and one or more dedicated resources in the RB set.
  • the common resource blocks 128 and 130 are at the boundaries of the RB set, so that the OCB requirement can be fulfilled based on the bandwidth between the resource blocks 128 and 130.
  • the terminal device may determine the dedicated resource block 126 for transmitting the data information of the one PSFCH and also transmit redundant signals on the common resource blocks 128 and 130.
  • the terminal device will transmit, per PSFCH, redundant signals on the same common resource blocks 128 and 130. This may also cause the unnecessary power consumption and/or interference introduced by the accumulated IBE.
  • this disclosure provided a method for sidelink communications. It is to be understood that although the embodiments are mainly discussed with reference to the PSFCH, the embodiments may be also applied to any other communication channels or links.
  • Fig. 2 illustrates a flowchart 200 of an example method for sidelink communications in accordance with some other embodiments of the present disclosure.
  • the flowchart 200 will be described with reference to Fig. 1. It would be appreciated that although the process 200 has been described in the communication environment 100 of Fig. 1, this flowchart 200 may be likewise applied to other communication scenarios.
  • the terminal device 110 selects a second set of PSFCHs from a first set of PSFCHs.
  • the first set of PSFCH is the set of PSFCHs that need to be transmitted from the terminal device 110 to the terminal device 120.
  • the terminal device 110 can support a certain number of simultaneous PSFCH transmissions, but in some cases, the certain number may below the number PSFCHs in the first set of PSFCHs.
  • the terminal device 110 shall select a subset of the first set of PSFCHs, i.e., the second set of PSFCHs, for simultaneous PSFCH transmissions.
  • the terminal device 110 may select the second set of PSFCHs based on the priority levels associated with PSFCHs in the first set of PSFCHs and the UE capability, i.e., the certain number of simultaneous PSFCH transmissions.
  • the terminal device 110 may select the second set of PSFCHs based on a further designed criterion, such that the selected PSFCHs themselves (and a part of the common resources) may fulfill the OCB requirement without the common resources.
  • a further designed criterion such that the selected PSFCHs themselves (and a part of the common resources) may fulfill the OCB requirement without the common resources.
  • the terminal device 110 determines whether a first bandwidth or a second bandwidth is above a bandwidth threshold.
  • the first bandwidth is between dedicated resource blocks for two PSFCHs (which may be also referred to the first two PSFCHs) of the second set of PSFCHs
  • the second bandwidth is between a dedicated resource block for a PSFCH of the second set of PSFCHs and a common resource block of a set of common resource blocks for PSFCH.
  • the set of common resource blocks may include a common interlace in a RB set.
  • the set of common resource blocks may include common resource blocks at the boundaries of the RB set associated with PSFCH.
  • the two PSFCHs of the second set of PSFCHs may be any two PSFCHs in the second set of PSFCHs, for example, the PSFCHs having the largest bandwidth between therein and/or PSFCHs having the smallest bandwidth between therein.
  • the bandwidth threshold may be determined based on the OCB requirement. Only as an example, if the OCB requirement is 80%for a RB set or a frequency range, then the bandwidth threshold may be calculated as 80%of the bandwidth of the RB set or frequency range.
  • the terminal device 110 drops at least a portion of the set of common resource blocks and transmits the second set of PSFCHs.
  • the terminal device 110 can drop the whole set of common resource blocks or a portion of the set of common resource blocks when transmitting the second set of PSFCHs.
  • the droppings of the at least a portion of the set of common resource blocks are further discussed with reference to Figs. 3 to 4C.
  • Fig. 3 illustrates an example of dedicated resources and the droppings of the common interlace in accordance with some embodiments of the present disclosure.
  • a dedicated resource and the common interlace are preconfigured to be used when transmitting one PSFCH (i.e., the solution or Alt 1-1a as described above) .
  • the common interlace is the above set of common resource blocks.
  • the dedicated resource block 310 may be used for a PSFCH in the second set of PSFCHs and the dedicated resource block 320 may be used for another PSFCH in the second set of PSFCHs.
  • the bandwidth (which may be also referred to the first bandwidth) between the dedicated resource block 310 and dedicated resource block 320 may be above the bandwidth threshold.
  • the terminal device 110 may drop the common interlace (the whole set of resource blocks) and transmit the second set of PSFCHs at least on the dedicated resource blocks 310 and 320.
  • Fig. 4A illustrates an example of dedicated resources and the droppings of the set of common resource blocks in accordance with some embodiments of the present disclosure.
  • the common resource blocks at the boundaries of the RB set and dedicated resources are preconfigured to be used when transmitting one PSFCH (i.e., the other solution or Alt 3-2a as described above) .
  • the common resource blocks at the boundaries of the RB set is the above set of common resource blocks.
  • the dedicated resource block 401 may be used for a PSFCH in the second set of PSFCHs and the dedicated resource block 403 may be used for another PSFCH in the second set of PSFCHs.
  • the bandwidth (which may be also referred to the first bandwidth) between the dedicated resource block 401 and dedicated resource block 403 may be above the bandwidth threshold.
  • the terminal device 110 may drop the common resource blocks 410 and 420 at the boundaries of the RB set (the whole set of resource blocks) and transmit the second set of PSFCHs at least on the dedicated resource blocks 401 and 403.
  • Fig. 4B illustrates an example of dedicated resources and the droppings of at least a portion of the set of common resource in accordance with some embodiments of the present disclosure
  • the common resource blocks at the boundaries of the RB set and dedicated resources are preconfigured to be used when transmitting one PSFCH (i.e., the other solution or Alt 3-2a as described above) .
  • the common resource blocks at the boundaries of the RB set is the above set of common resource blocks.
  • the dedicated resource block 421 may be used for a PSFCH in the second set of PSFCHs and the dedicated resource block 423 may be used for another PSFCH in the second set of PSFCHs.
  • the bandwidth between the dedicated resource block 401 and dedicated resource block 403 may be below the bandwidth threshold.
  • the bandwidth (which may be also referred to the second bandwidth) between the common resource block 430 and the dedicated resource block 423 may be above the bandwidth threshold.
  • the terminal device 110 may only drop the common resource block 440 at the boundaries of the RB set (a portion of the set of resource blocks) and transmit the second set of PSFCHs by the dedicated resource blocks 421, 423 and the common resource block 430.
  • Fig. 4C illustrates another example of dedicated resources and the droppings of at least a portion of the set of resource blocks in accordance with some embodiments of the present disclosure.
  • the common resource blocks at the boundaries of the RB set and dedicated resources are preconfigured to be used when transmitting one PSFCH (i.e., the other solution or Alt 3-2a as described above) .
  • the common resource blocks at the boundaries of the RB set is the above set of common resource blocks.
  • the dedicated resource block 441 may be used for a PSFCH in the second set of PSFCHs and the dedicated resource block 443 may be used for another PSFCH in the second set of PSFCHs.
  • the bandwidth between the dedicated resource block 441 and dedicated resource block 443 may be below the bandwidth threshold.
  • the bandwidth (which may be also referred to the second bandwidth) between the common resource block 460 and the dedicated resource block 441 may be above the bandwidth threshold.
  • the terminal device 110 may only drop the common resource block 450 at the boundaries of the RB set (a portion of the set of resource blocks) and transmit the second set of PSFCHs by the dedicated resource blocks 441, 443 and the common resource block 460.
  • the terminal device 110 may transmit the second set of PSFCHs with the set of common resources.
  • the terminal device 110 may transmit the PSFCHs without the common resources. As such, the unnecessary power consumption and inter-resource interference can be avoided.
  • the terminal device 110 may, based on a further designed criterion, select the second set of PSFCHs, such that the selected PSFCHs themselves (and a part of the common resources) may fulfill the OCB requirement without the common resources.
  • select the second set of PSFCHs such that the selected PSFCHs themselves (and a part of the common resources) may fulfill the OCB requirement without the common resources.
  • the selection of the second set of PFSCHs is further discussed with reference to Figs. 5 to 6B.
  • Fig. 5 illustrates an example of the selection of a PSFCH pair in accordance with some embodiments of the present disclosure.
  • the terminal device 110 may select the second set of PSFCHs by selecting a PSFCH pair (which may be also referred to be the first PSFCH pair) including two PSFCHs (which may be also referred to second two PSFCHs) from the first set of PSFCHs. Moreover, the bandwidth between dedicated resource blocks for the first PSFCH pair (i.e., these two PSFCHs in the first set of PSFCHs) is above the bandwidth threshold. Then, the terminal device 110 may further select PSFCHs for the second set of PSFCHs based on the associated priority levels and the UE capability. In this way, at least two PSFCHs meeting the OCB requirement can be selected for the second set of PSFCHs.
  • a dedicated resource and the common interlace may be preconfigured to be used when transmitting one PSFCH (i.e., the solution or Alt 1-1a as described above) .
  • the common interlace is the above set of common resource blocks.
  • the dedicated resource block 510 may be used for a first PSFCH and the dedicated resource block 540 may be used for a second PSFCH.
  • the dedicated resource block 520 may be used for a third PSFCH and the dedicated resource block 540 may be used for a fourth PSFCH.
  • the terminal device 110 may select a PSFCH pair including the first PSFCH with the dedicated resource 510 and the second PSFCH with the dedicated resource 540.
  • the bandwidth between the dedicated resources 510 and 540 is above the bandwidth threshold.
  • the terminal device 110 may further select other PSFCHs for the second set of PSFCHs based on the associated priority level and UE capability. In this case, the terminal device 110 may drop the common interlace and transmit the second set of PSFCHs.
  • the plurality of PSFCH pairs can include one or more PSFCH pairs, each of which comprises two PSFCHs fulfilling the OCB requirement.
  • the terminal device 110 may select the PSFCH pair for the second set of PSFCHs based on a priority level associated with PSFCHs in these three PSFCH pairs.
  • the terminal device 110 may randomly select the first PSFCH pair or the second PSFCH pair. That is, from the multiple pairs of PSFCHs meeting the OCB requirement, the terminal device 110 may select the pair that one of the PSFCH within the pair has highest associated priority among the PSFCHs associated to the multiple pairs.
  • the terminal device may further consider another PSFCH in these PSFCH pairs. Assuming that the second PSFCH on the dedicated RB 540 is associated with a second priority level that is the second highest among priority levels associated with PSFCHs in the above three PSFCH pairs.
  • the terminal device 110 may select the PSFCH pair by selecting the first PSFCH pair comprising the first PSFCH and the second PSFCH, since the second PSFCH is associated with the second highest priority level among these three PSFCH pairs. For example, if the PSFCH with highest associated priority is associated to multiple pairs, the terminal device 110 further determines one pair of PSFCH from the multiple pairs based on the associated priority of the other PSFCH within each associated pair.
  • the terminal device 110 may select one of them randomly or based on other predefined rules.
  • a PSFCH pair of the plurality of PSFCH pairs is associated with an averaged priority level that is determined based on priority levels associated with PSFCHs in the PSFCH pair.
  • the first PSFCH pair may have an averaged priority level that is determined based on the priority levels associated with the first PSFCH and the second PSFCH on the dedicated RBs 510 and 540.
  • the terminal device 110 may select a PSFCH pair associated with a first averaged level that is the highest among averaged priority levels associated with PSFCH pairs of these three PSFCH pairs.
  • the first PFSCH on the dedicated RB 510 is associated with the highest priority level
  • the second PFSCH is associated with the second highest priority level.
  • the first PSFCH pair may have the highest averaged priority level.
  • the terminal device 110 may select the first PSFCH pair.
  • the selected PSFCH pair can fulfill the OCB requirement.
  • the terminal device 110 may drop the set of common resource blocks.
  • the terminal device 110 would transmit seven (7) PSFCHs.
  • the terminal device 110 tries to select a pair of PSFCH to meet the OCB requirement, for example, ⁇ PSFCH#1 on dedicated RB 310, PSFCH#6 on dedicated 530 ⁇ , ⁇ PSFCH#1 on dedicated RB 510, PSFCH#7 on dedicated RB 540 ⁇ , ⁇ PSFCH#2 on dedicated RB 520, PSFCH#7 on dedicated RB 540 ⁇ could meet the OCB requirement.
  • the UE further selects one pair from three pairs based on a priority level associated with PSFCHs in three pairs. For example, the terminal device 110 shall select the PSFCH with highest priority associated to the three pairs, e.g., selects the PSFCH with highest priority from ⁇ PSFCH#1, PSFCH#2, PSFCH#6, PSFCH#7 ⁇ .
  • PSFCH#2 has highest associated priority, then the pair ⁇ PSFCH#2, PSFCH#7 ⁇ is selected and the terminal device 110 continues to select other PSFCHs from ⁇ PSFCH#1, PSFCH#3, PSFCH#4, PSFCH#5, PSFCH#6 ⁇ according the order of associated priority and its capability.
  • PSFCH#1 has highest associated priority ⁇ PSFCH#1, PSFCH#6 ⁇ and ⁇ PSFCH#1, PSFCH#7 ⁇ will be further considered to be selected, the UE selects the pair based on the associated priority of PSFCH#6 and PSFCH#7.
  • the UE select the pair based on the averaged associated priority of the three pairs, if ⁇ PSFCH#1, PSFCH#6 ⁇ has highest averaged associated priority, then PSFCH#1 and PSFCH#6 are selected. If ⁇ PSFCH#1, PSFCH#6 ⁇ and ⁇ PSFCH#2, PSFCH#7 ⁇ have the same averaged associated priority, the terminal device 110 may further select one pair from the two pairs based on the highest associated priority of PSFCH#1, PSFCH#2, PSFCH#6 and PSFCH#7.
  • Fig. 6A illustrates another example of the selection of a PSFCH pair in accordance with some embodiments of the present disclosure.
  • the common resource blocks at the boundaries of the RB set and dedicated resources are preconfigured to be used when transmitting one PSFCH (i.e., the other solution or Alt 3-2a as described above) .
  • the common resource blocks at the boundaries of the RB set is the above set of common resource blocks.
  • the dedicated resource 610, 620 and 630 may be used for a PSFCH in the first set of PSFCHs.
  • the terminal device 110 may select the PSFCH pair in the same way as described with reference to Fig. 5.
  • the terminal device 110 may consider utilizing a part of the set of common resource blocks.
  • the terminal device may determine whether a third bandwidth between a dedicated resource block for a third PSFCH of the first set of PSFCHs and a first common resource block of the set of common resource blocks is above the bandwidth threshold. If the third bandwidth is above the bandwidth threshold, the terminal device 110 may select the third PSFCH, such that this third PSFCH and the first common resource block can meet the OCB requirement without the whole set of common resource blocks.
  • the terminal device 110 may also determine the third PSFCH based on the associated priority level. That is, the bandwidth between each the plurality of PSFCHs and any common resource block in the set of common RBs can fulfill the OCB requirement.
  • the priority level associated with the third PSFCH is the highest among the more than one PSFCH. For discussion clarity, this case is further discussed with reference to Fig. 6B.
  • Fig. 6B illustrates an example of the selection of a PSFCH and the droppings of at least a portion of the set of resource blocks in accordance with some embodiments of the present disclosure.
  • the bandwidth between a PSFCH on dedicated RB 660 and a common resource block 670 and the bandwidth between another PSFCH on dedicated RB 680 and a common resource block 670 each is above the bandwidth threshold.
  • the terminal device 110 tries to select a PSFCH pair that the dedicated PRBs of the two PSFCHs could meet the OCB requirement from all the PSFCHs. If it could select this pair of PSFCHs, then the common PRBs 450 and 460 could be dropped. If multiple pairs of PSFCHs could meet the OCB requirement, the terminal device 110 may select the PSFCH pair in the same way discussed with reference to Fig. 5.
  • the terminal device 110 could try to drop one common PRB transmission via the following.
  • the terminal device 110 may select one PSFCH of which dedicated PRB together with one of the common PRB could meet the OCB requirement. If multiple PSFCHs could meet the OCB requirement, the terminal device 110 may select the PSFCH with highest associated priority. Furthermore, if there are still multiple PSFCHs meeting the OCB requirement, it is up to UE implementation to select on PSFCH from the PSFCHs with highest associated priority.
  • the terminal device 110 cannot select PSFCH with above two cases, it means that the terminal device 110 needs to transmit the common PRBs 670 and 690 to meet the OCB requirement.
  • the terminal device 110 would transmit seven (7) PSFCHs.
  • the terminal device 110 tries to select a pair of PSFCHs to meet the OCB requirement.
  • the terminal device 110 may determine that ⁇ PSFCH#1 on dedicated RB 610, PSFCH#7 on dedicated RB 620 ⁇ and ⁇ PSFCH#2 on dedicated RB 630, PSFCH#7 ⁇ could meet the OCB requirement.
  • the terminal device 110 could determine one pair from two pairs in the same way as discussed with reference to Fig 5.
  • the terminal device 110 cannot select a pair of PSFCHs to meet the OCB requirement, as shown by the example of Fig. 6B.
  • the terminal device 110 may further select one PSFCH which could meet the OCB requirement together with one of the common PRBs.
  • the PSFCH#1 on the dedicated RB 660 and PSFCH#2 on the dedicated RB 680 could meet the OCB requirement together with common PRB 670.
  • the UE selects one PSFCH from PSFCH#1 and PSFCH#2 based on the associated priority.
  • the terminal device 110 may drop the RB 690.
  • FIG. 7 illustrates a simplified block diagram of a device 700 that is suitable for implementing embodiments of the present disclosure.
  • the device 700 can be considered as a further example implementation of the terminal device 110 or 120 as shown in Fig. 1. Accordingly, the device 700 can be implemented at or as at least a part of the terminal device 110 or 120.
  • the device 700 includes a processor 710, a memory 720 coupled to the processor 710, a suitable transmitter (TX) and receiver (RX) 740 coupled to the processor 710, and a communication interface coupled to the TX/RX 740.
  • the memory 710 stores at least a part of a program 730.
  • the TX/RX 740 is for bidirectional communications.
  • the TX/RX 740 has at least one antenna to facilitate communication, though in practice an Access Node mentioned in this disclosure may have several ones.
  • the communication interface may represent any interface that is necessary for communication with other network elements, such as X2 interface for bidirectional communications between eNBs or gNBs, S1 interface for communication between a Mobility Management Entity (MME) /Serving Gateway (S-GW) and the eNB or gNB, Un interface for communication between the eNB or gNB and a relay node (RN) , or Uu interface for communication between the eNB or gNB and a terminal device.
  • MME Mobility Management Entity
  • S-GW Serving Gateway
  • Un interface for communication between the eNB or gNB and a relay node (RN)
  • RN relay node
  • Uu interface for communication between the eNB or gNB and a terminal device.
  • the program 730 is assumed to include program instructions that, when executed by the associated processor 710, enable the device 700 to operate in accordance with the embodiments of the present disclosure, as discussed herein with reference to Figs. 1-6.
  • the embodiments herein may be implemented by computer software executable by the processor 710 of the device 700, or by hardware, or by a combination of software and hardware.
  • the processor 710 may be configured to implement various embodiments of the present disclosure.
  • a combination of the processor 710 and memory 720 may form processing means 750 adapted to implement various embodiments of the present disclosure.
  • the memory 720 may be of any type suitable to the local technical network and may be implemented using any suitable data storage technology, such as a non-transitory computer readable storage medium, semiconductor-based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory, as non-limiting examples. While only one memory 720 is shown in the device 700, there may be several physically distinct memory modules in the device 700.
  • the processor 710 may be of any type suitable to the local technical network, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples.
  • the device 700 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.
  • an apparatus capable of performing the method 200 may comprise means for performing the respective steps of the method 200.
  • the means may be implemented in any suitable form.
  • the means may be implemented in a circuitry or software module.
  • 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 method 200.
  • 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 representation, it will be appreciated that the blocks, apparatus, systems, techniques or methods 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.
  • 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 process or method 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. 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.
  • the above program code may be embodied on a machine readable medium, which may be any tangible medium that may contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
  • the machine readable medium may be a machine readable signal medium or a machine readable storage medium.
  • a machine 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.
  • machine readable storage medium More specific examples of the machine 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.
  • RAM random access memory
  • ROM read-only memory
  • EPROM or Flash memory erasable programmable read-only memory
  • CD-ROM portable compact disc read-only memory
  • magnetic storage device or any suitable combination of the foregoing.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
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Abstract

Des modes de réalisation de la présente divulgation concernent des dispositifs, des procédés et un support pour des communications de liaison latérale. Un dispositif terminal sélectionne depuis un premier ensemble de canaux de rétroaction de liaison latérale physique (PSFCH), un second ensemble de PSFCH. Le dispositif terminal détermine si une première bande passante ou une seconde bande passante est supérieure à un seuil de bande passante. La première bande passante se situe entre des blocs de ressources dédiés pour deux PSFCH du second ensemble de PSFCH, et la seconde bande passante se situe entre un bloc de ressources dédié pour un PSFCH du second ensemble de PSFCH et un bloc de ressources commun d'un ensemble de blocs de ressources communs pour PSFCH. Ensuite, s'il est déterminé que la première bande passante ou la seconde bande passante est supérieure au seuil de bande passante, le dispositif terminal abandonne au moins une partie de l'ensemble de blocs de ressources communs et transmet le second ensemble de PSFCH. De cette manière, les performances de communication de liaison latérale peuvent être améliorées.
PCT/CN2023/084788 2023-03-29 2023-03-29 Dispositif, procédé et support pour communications de liaison latérale WO2024093111A1 (fr)

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