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WO2025208641A1 - Dispositif terminal, procédé et support lisible par ordinateur pour communications par liaison latérale - Google Patents

Dispositif terminal, procédé et support lisible par ordinateur pour communications par liaison latérale

Info

Publication number
WO2025208641A1
WO2025208641A1 PCT/CN2024/086263 CN2024086263W WO2025208641A1 WO 2025208641 A1 WO2025208641 A1 WO 2025208641A1 CN 2024086263 W CN2024086263 W CN 2024086263W WO 2025208641 A1 WO2025208641 A1 WO 2025208641A1
Authority
WO
WIPO (PCT)
Prior art keywords
interlace
prbs
terminal device
psfch
sidelink
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/086263
Other languages
English (en)
Inventor
Zhaobang MIAO
Gang Wang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to PCT/CN2024/086263 priority Critical patent/WO2025208641A1/fr
Publication of WO2025208641A1 publication Critical patent/WO2025208641A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]

Definitions

  • Wireless communication networks are widely deployed and can support various types of service applications for terminal devices.
  • Many communication schemes have been proposed to support the rapidly increasing data traffic.
  • sidelink communication has been proposed.
  • one or more sidelinks may be established between the terminal devices in the wireless communication network and the terminal devices may exchange signalling and data with each other directly via the established sidelinks.
  • a transmitting terminal device transmits sidelink control information associated with sidelink data on a Physical Sidelink Control Channel (PSCCH) , and transmits the sidelink data on a Physical Sidelink Shared Channel (PSSCH) based on the sidelink control information.
  • a Physical Sidelink Feedback Channel (PSFCH) is used to carry Hybrid Automatic Repeat Request (HARQ) feedback information for the sidelink data from a receiving terminal device to the transmitting terminal device.
  • HARQ Hybrid Automatic Repeat Request
  • a first terminal device comprising a processor.
  • the processor is configured to cause the first terminal device to: determine a first number of physical resource blocks (PRBs) in a first interlace within a resource block (RB) set for a physical sidelink feedback channel (PSFCH) transmission after excluding at least one PRB from a total number of PRBs in the first interlace within the RB set; determine a second number of PRBs in a second interlace for the PSFCH transmission; and determine a transmission power for the PSFCH transmission based at least one the first number and the second number.
  • PRBs physical resource blocks
  • RB resource block
  • PSFCH physical sidelink feedback channel
  • a method for sidelink communications comprises: determining a first number of PRBs in a first interlace within an RB set for a PSFCH transmission after excluding at least one PRB from a total number of PRBs in the first interlace; determining a second number of PRBs in a second interlace for the PSFCH transmission; and determining a transmission power for the PSFCH transmission based at least one the first number and the second number.
  • a computer readable medium having instructions stored thereon.
  • the instructions when executed on at least one processor of a device, cause the device to perform the method according to the second aspect.
  • Fig. 1 illustrates an example communication network in which embodiments of the present disclosure can be implemented
  • Fig. 3 illustrates an example of an RB set and interlaces in an NR-U interlace scheme in accordance with some embodiments of the present disclosure
  • Fig. 4 illustrates an example of PRBs in a first interlace within an RB set in accordance with some embodiments of the present disclosure
  • Fig. 5 illustrates an example of common PRBs in a first interlace and dedicated PRBs in a second interlace within an RB set in accordance with some embodiments of the present disclosure
  • Fig. 6 illustrates an example of common PRBs in a first interlace and dedicated PRBs in a second interlace within two RB sets in accordance with some embodiments of the present disclosure
  • Fig. 7 illustrates a flowchart of an example method in accordance with some embodiments of the present disclosure.
  • Fig. 8 is a simplified block diagram of a device that is suitable for implementing some embodiments of the present disclosure.
  • the ‘terminal device’ can further has ‘multicast/broadcast’ feature, to support public safety and mission critical, V2X applications, transparent IPv4/IPv6 multicast delivery, IPTV, smart TV, radio services, software delivery over wireless, group communications and IoT applications. It may also incorporate one or multiple Subscriber Identity Module (SIM) as known as Multi-SIM.
  • SIM Subscriber Identity Module
  • the term “terminal device” can be used interchangeably with a UE, a mobile station, a subscriber station, a mobile terminal, a user terminal or a wireless device.
  • network device refers to a device which is capable of providing or hosting a cell or coverage where terminal devices can communicate.
  • a network device include, but not limited to, a Node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , a next generation NodeB (gNB) , a transmission reception point (TRP) , a remote radio unit (RRU) , a radio head (RH) , a remote radio head (RRH) , an IAB node, a low power node such as a femto node, a pico node, a reconfigurable intelligent surface (RIS) , Network-controlled Repeaters, and the like.
  • NodeB Node B
  • eNodeB or eNB evolved NodeB
  • gNB next generation NodeB
  • TRP transmission reception point
  • RRU remote radio unit
  • RH radio head
  • RRH remote radio head
  • IAB node a low power node such
  • the terminal device or the network device may have Artificial intelligence (AI) or Machine learning capability. It generally includes a model which has been trained from numerous collected data for a specific function, and can be used to predict some information.
  • AI Artificial intelligence
  • Machine learning capability it generally includes a model which has been trained from numerous collected data for a specific function, and can be used to predict some information.
  • the terminal or the network device may work on several frequency ranges, e.g. FR1 (410 MHz –7125 MHz) , FR2 (24.25GHz to 71GHz) , frequency band larger than 100GHz as well as Tera Hertz (THz) . It can further work on licensed/unlicensed/shared spectrum.
  • the terminal device may have more than one connection with the network devices under Multi-Radio Dual Connectivity (MR-DC) application scenario.
  • MR-DC Multi-Radio Dual Connectivity
  • the terminal device or the network device can work on full duplex, flexible duplex and cross division duplex modes.
  • the embodiments of the present disclosure may be performed according to any generation communication protocols either currently known or to be developed in the future.
  • Examples of the communication protocols include, 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, 5.5G, 5G-Advanced networks, or the sixth generation (6G) networks.
  • Fig. 4 illustrates an example of physical resource blocks (PRBs) in a first interlace within an RB set in accordance with some embodiments of the present disclosure.
  • a first interlace may be configured as a common interlace for common PSFCH transmissions.
  • a subset of PRBs in the first interlace is common PRBs used for common PSFCH transmissions.
  • the common PRBs may comprise 10 or 11 PRBs which are distributed among one RB set.
  • the terminal device may perform the first PSFCH transmission on dedicated PRBs in a second interlace within the RB set#0.
  • the terminal device may perform a common PSFCH transmission on common PRBs in a first interlace within the RB set#0 to fulfill occupied channel bandwidth (OCB) requirement of the first PSFCH transmission.
  • OCB occupied channel bandwidth
  • Fig. 7 illustrates a flowchart of an example method 700 in accordance with some embodiments of the present disclosure.
  • the method 700 can be implemented at a terminal device, such as one of the first terminal device 110, the second terminal device 120 and the third terminal device 130 as shown in Fig. 1.
  • a terminal device such as one of the first terminal device 110, the second terminal device 120 and the third terminal device 130 as shown in Fig. 1.
  • the method 700 will be described with reference to Fig. 1 as performed by the first terminal device 110 without loss of generality.
  • an index of the first interlace may be determined based on a higher layer parameter.
  • the total number of PRBs in the first interlace within the RB set may be equal to a configured or pre-configured value.
  • the total number of PRBs in the first interlace within the RB set may be equal to 10.
  • the total number of PRBs in the first interlace within the RB set may be equal to 11.
  • the number of the at least one PRB excluded from the total number of PRBs in the first interlace within the RB set may be determined based on an offset between a dedicated PRB in the second interlace and a common PRB in the first interlace.
  • the number of the at least one excluded PRB is represented by n.
  • a PRB s 1 in the first interlace is excluded from the resources for a PSFCH transmission, if
  • ⁇ 5 for ⁇ 0 or
  • the first terminal device 110 determines a second number of PRBs in a second interlace for the PSFCH transmission.
  • the second number is represented by
  • the first terminal device 110 may determine the second number based on HARQ-ACK information and reception of sidelink data associated with the HARQ-ACK information.
  • the first terminal device 110 determines a transmission power for the PSFCH transmission based at least on the first number and the second number.
  • the total transmission power of the first terminal device 110 will not exceed the maximum transmission power of the first terminal device 110, which will ensure success of PSFCH transmissions.
  • the first terminal device 110 may perform a first PSFCH transmission on dedicated PRBs in a second interlace within the RB set#0.
  • the first terminal device 110 may perform a common PSFCH transmission on common PRBs in a first interlace within the RB set#0 to fulfill OCB requirement of the first PSFCH transmission.
  • the first interlace is configured as a common interlace for common PSFCH transmissions.
  • the first terminal device 110 may perform the second PSFCH transmission on dedicated PRBs in the second interlace within the RB set#1.
  • the first terminal device 110 may perform a common PSFCH transmission on common PRBs in the first interlace within the RB set#1 to fulfill OCB requirement of the second PSFCH transmission.
  • the first interlace may comprise p PRBs within the RB set#0 and may comprise q PRBs within the RB set#1.
  • each of p and q may be equal to a configured or pre-configured value. That is, no matter how many PRBs belongs to the common interlace, the first terminal device 110 uses the configured or pre-configured number (p or q) of PRBs as a total PRBs number within the common interlace and uses p or q minus the number of the excluded PRBs not used for common PRBs as described in TS 38.213, Clause 16.3.0 to determine the actual used common PRBs to determine the transmission power on the common interlace (i.e., the first interlace) .
  • each of p and q may be equal to 10. That is, no matter how many PRBs belongs to the common interlace, the first terminal device uses 10 PRBs as the total number of PRBs within the common interlace and uses 10 minus the number of the excluded PRBs not used for common PRBs as described in TS 38.213, Clause 16.3.0 to determine the actual used common PRBs to determine the transmission power on the common interlace (i.e., the first interlace) .
  • each of p and q may be equal to 11. That is, no matter how many PRBs belongs to the common interlace, the first terminal device uses 11 PRBs as the total number of PRBs within the common interlace and uses 11 minus the number of the excluded PRBs not used for common PRBs as described in TS 38.213, Clause 16.3.0 to determine the actual used common PRBs to determine the transmission power on the common interlace (i.e., the first interlace) .
  • the first terminal device 110 determines the first number of PRBs in the first interlace within the RB set#0 based on an equation (2) :
  • p represents the total number of PRBs in the first interlace within the RB set#0.
  • the first terminal device 110 determines the first number of PRBs in the first interlace within the RB set#1 based on an equation (3) :
  • q represents the total number of PRBs in the first interlace within the RB set#1.
  • the first number is the number of actually used common PRBs.
  • the first terminal device 110 determines the transmission power for the PSFCH transmission based at least on the first number and the second number. For example, within the RB set r, the first terminal device 110 may determines the transmission power based on an equation (4) :
  • P PSFCH, k (i) represents a transmission power for a PSFCH transmission k, 1 ⁇ k ⁇ N Tx, PSFCH , on all the resource pools in PSFCH transmission occasion i.
  • P PSFCH one represents a transmission power on one PRB in the subset of PRBs in the second interlace for PSFCH transmission.
  • represents the second number. represents the first number. For example, is the number of PRBs in the first interlace configured as common interlace for PSFCH transmission in RB set r for the PSFCH transmissions in RB set r after excluding PRBs for PSFCH transmissions as described in TS 38.213, Clause 16.3.0.
  • the first terminal device 110 uses the actual PRBs number within the common interlace to minus the excluded PRBs not used for common PRBs as described in TS 38.213, Clause 16.3.0 to determine the actual used common PRBs to determine the transmission power on common interlace (i.e., the first interlace) .
  • Table 1 shows an example of change to the TS 38.213, Clause 16.2.3 to implement the embodiments of the present disclosure.
  • Fig. 8 is a simplified block diagram of a device 800 that is suitable for implementing embodiments of the present disclosure.
  • the device 800 can be considered as a further example embodiment of the terminal device 110, 120 or 130 as shown in Fig. 1. Accordingly, the device 800 can be implemented at or as at least a part of the terminal device 110, 120 or 130.
  • the device 800 includes a processor 810, a memory 820 coupled to the processor 810, a suitable transceiver 840 coupled to the processor 810, and a communication interface coupled to the transceiver 840.
  • the memory 810 stores at least a part of a program 830.
  • the transceiver 840 may be for bidirectional communications or a unidirectional communication based on requirements.
  • the transceiver 840 may include at least one of a transmitter 842 and a receiver 844.
  • the transmitter 842 and the receiver 844 may be functional modules or physical entities.
  • the transceiver 840 has at least one antenna to facilitate communication, though in practice an Access Node mentioned in this application may have several ones.
  • the communication interface may represent any interface that is necessary for communication with other network elements, such as X2/Xn interface for bidirectional communications between eNBs/gNBs, S1/NG interface for communication between a Mobility Management Entity (MME) /Access and Mobility Management Function (AMF) /SGW/UPF and the eNB/gNB, Un interface for communication between the eNB/gNB and a relay node (RN) , or Uu interface for communication between the eNB/gNB and a terminal device.
  • MME Mobility Management Entity
  • AMF Access and Mobility Management Function
  • RN relay node
  • Uu interface for communication between the eNB/gNB and a terminal device.
  • the components included in the apparatuses and/or devices of the present disclosure may be implemented in various manners, including software, hardware, firmware, or any combination thereof.
  • one or more units may be implemented using software and/or firmware, for example, machine-executable instructions stored on the storage medium.
  • parts or all of the units in the apparatuses and/or devices may be implemented, at least in part, by one or more hardware logic components.
  • FPGAs Field-programmable Gate Arrays
  • ASICs Application-specific Integrated Circuits
  • ASSPs Application-specific Standard Products
  • SOCs System-on-a-chip systems
  • CPLDs Complex Programmable Logic Devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Les modes de réalisation de la présente invention concernent un dispositif terminal, un procédé et un support lisible par ordinateur pour des communications par liaison latérale. Un premier dispositif terminal détermine un premier nombre de PRB dans un premier entrelacement dans un ensemble RB pour une transmission PSFCH après avoir exclu au moins un PRB d'un nombre total de PRB dans le premier entrelacement dans l'ensemble RB. Le premier dispositif terminal détermine également un second nombre de PRB dans un second entrelacement pour la transmission PSFCH. À son tour, le premier dispositif terminal détermine une puissance de transmission pour la transmission PSFCH sur la base au moins du premier nombre et du second nombre.
PCT/CN2024/086263 2024-04-05 2024-04-05 Dispositif terminal, procédé et support lisible par ordinateur pour communications par liaison latérale Pending WO2025208641A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2024/086263 WO2025208641A1 (fr) 2024-04-05 2024-04-05 Dispositif terminal, procédé et support lisible par ordinateur pour communications par liaison latérale

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2024/086263 WO2025208641A1 (fr) 2024-04-05 2024-04-05 Dispositif terminal, procédé et support lisible par ordinateur pour communications par liaison latérale

Publications (1)

Publication Number Publication Date
WO2025208641A1 true WO2025208641A1 (fr) 2025-10-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2024/086263 Pending WO2025208641A1 (fr) 2024-04-05 2024-04-05 Dispositif terminal, procédé et support lisible par ordinateur pour communications par liaison latérale

Country Status (1)

Country Link
WO (1) WO2025208641A1 (fr)

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