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WO2024159839A1 - Commande de puissance de transmissions psfch - Google Patents

Commande de puissance de transmissions psfch Download PDF

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Publication number
WO2024159839A1
WO2024159839A1 PCT/CN2023/129442 CN2023129442W WO2024159839A1 WO 2024159839 A1 WO2024159839 A1 WO 2024159839A1 CN 2023129442 W CN2023129442 W CN 2023129442W WO 2024159839 A1 WO2024159839 A1 WO 2024159839A1
Authority
WO
WIPO (PCT)
Prior art keywords
psfch
common interlace
transmitting power
interlace
common
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/CN2023/129442
Other languages
English (en)
Inventor
Zhennian SUN
Haipeng Lei
Xiaodong Yu
Xin Guo
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.)
Lenovo Beijing Ltd
Original Assignee
Lenovo Beijing Ltd
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 Lenovo Beijing Ltd filed Critical Lenovo Beijing Ltd
Priority to PCT/CN2023/129442 priority Critical patent/WO2024159839A1/fr
Publication of WO2024159839A1 publication Critical patent/WO2024159839A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/38—TPC being performed in particular situations
    • H04W52/383—TPC being performed in particular situations power control in peer-to-peer links
    • 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
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • 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
    • H04L5/0062—Avoidance of ingress interference, e.g. ham radio channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/325—Power control of control or pilot channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/38—TPC being performed in particular situations
    • H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
    • 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—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
    • 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
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/36—Transmission power control [TPC] using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range

Definitions

  • the present disclosure relates to wireless communications, and more specifically to power control of physical sidelink feedback channel (PSFCH) transmissions.
  • PSFCH physical sidelink feedback channel
  • a wireless communications system may include one or multiple network communication devices, such as base stations, which may be otherwise known as an eNodeB (eNB) , a next-generation NodeB (gNB) , or other suitable terminology.
  • Each network communication devices such as a base station may support wireless communications for one or multiple user communication devices, which may be otherwise known as user equipment (UE) , or other suitable terminology.
  • the wireless communications system may support wireless communications with one or multiple user communication devices by utilizing resources of the wireless communication system (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers) .
  • the present disclosure relates to methods, apparatuses, and systems that support power control of PSFCH transmissions. With the apparatuses and methods, it is possible to improve PSFCH transmissions on a common interlace with enhanced efficiency.
  • a UE comprises at least one memory; and at least one processor coupled with the at least one memory and configured to cause the UE to: determine that a physical sidelink feedback channel (PSFCH) occupies a common interlace and one or more dedicated physical resource blocks (PRBs) ; determine transmitting power for the common interlace; and transmit, based on the transmitting power for the common interlace, a part of the PSFCH occupying the common interlace without transmitting another part of the PSFCH occupying the one or more dedicated PRBs on a PSFCH occasion within a channel occupancy time (COT) initiated by the UE or within a COT shared by another UE.
  • PSFCH physical sidelink feedback channel
  • PRBs dedicated physical resource blocks
  • a method performed by the UE comprises: determining that a physical sidelink feedback channel (PSFCH) occupies a common interlace and one or more dedicated physical resource blocks (PRBs) ; determining transmitting power for the common interlace; and transmitting, based on the transmitting power for the common interlace, a part of the PSFCH occupying the common interlace without transmitting another part of the PSFCH occupying the one or more dedicated PRBs on a PSFCH occasion within a channel occupancy time (COT) initiated by the UE or within a COT shared by another UE.
  • PSFCH physical sidelink feedback channel
  • PRBs dedicated physical resource blocks
  • a processor for wireless communication comprises at least one controller coupled with at least one memory and configured to cause the at least one processor to: determine that a physical sidelink feedback channel (PSFCH) occupies a common interlace and one or more dedicated physical resource blocks (PRBs) ; determine transmitting power for the common interlace; and transmit, based on the transmitting power for the common interlace, a part of the PSFCH occupying the common interlace without transmitting another part of the PSFCH occupying the one or more dedicated PRBs on a PSFCH occasion within a channel occupancy time (COT) initiated by the UE or within a COT shared by another UE.
  • PSFCH physical sidelink feedback channel
  • PRBs dedicated physical resource blocks
  • the transmitting power for the common interlace is determined based on configured or pre-configured maximum transmitting power for the PSFCH.
  • the transmitting power for the common interlace is determined based on configured or pre-configured total transmitting power for the common interlace.
  • the transmitting power for the common interlace is determined based on configured or pre-configured maximum transmitting power for the PSFCH, and an offset between the maximum transmitting power for the PSFCH and the transmitting power for the common interlace.
  • the determined transmitting power for the common interlace is equally distributed to PRBs within the common interlace.
  • the transmitting power for the common interlace is determined based on configured or pre-configured transmitting power for each PRB within the common interlace.
  • the transmitting power for the common interlace is determined based on an assumption that: the common interlace and the one or more dedicated PRBs are transmitted; and a reference number of PSFCHs are transmitted, the reference number of PSFCHs comprising the PSFCH.
  • the reference number is one; or the reference number is a maximum number of PSFCHs that the UE is capable to transmit at a same time; or the reference number is determined by the UE, the reference number being between one and the maximum number; or the reference number is configured or pre-configured.
  • Some implementations of the method and apparatuses described herein may further include determining that the part of the PSFCH occupying the common interlace is to be transmitted and the other part of the PSFCH occupying the one or more dedicated PRBs is not to be transmitted based on determining the following: within the COT initiated by the UE or within the COT shared by the other UE, the UE does not intend to transmit the PSFCH and does not expect to receive the PSFCH on the PSFCH occasion; and the UE performs a physical sidelink control channel (PSCCH) transmission or a physical sidelink shared channel (PSSCH) transmission just before the PSFCH occasion in a same slot; and the UE intends to transmit one of a PSCCH, a PSSCH, or a sidelink synchronization signal block (S-SSB) after the PSFCH occasion.
  • PSCCH physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • the PSFCH is used for sidelink hybrid automatic repeat request (HARQ) feedback, and wherein the UE does not expect to receive the PSFCH on the PSFCH occasion based on determining one of the following: a PSSCH associated with the PSFCH occasion is transmitted with broadcast; or a PSSCH associated with the PSFCH occasion is transmitted with unicast or groupcast, and the sidelink HARQ feedback is disabled.
  • HARQ sidelink hybrid automatic repeat request
  • the PSFCH is used for conflict information, and wherein the UE does not expect to receive the PSFCH on the PSFCH occasion based on determining one of the following: the UE is not configured with a capability to receive conflict information; or a priority of a PSSCH associated with the PSFCH is a highest sidelink priority; or a priority of the PSSCH associated with the PSFCH is higher than or equal to a priority threshold.
  • FIG. 1 illustrates an example of a wireless communications system that supports power control of PSFCH transmissions in accordance with aspects of the present disclosure
  • FIG. 2 illustrates a flowchart of a method that supports power control of PSFCH transmissions in accordance with aspects of the present disclosure
  • FIG. 3 illustrates an example of a device that supports power control of PSFCH transmissions in accordance with aspects of the present disclosure
  • FIG. 4 illustrates an example of a processor that supports power control of PSFCH transmissions in accordance with aspects 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 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.
  • the term “and/or” includes any and all combinations of one or more of the listed terms. In some examples, values, procedures, or apparatuses are referred to as “best, ” “lowest, ” “highest, ” “minimum, ” “maximum, ” or the like. It will be appreciated that such descriptions are intended to indicate that a selection among many used functional alternatives can be made, and such selections need not be better, smaller, higher, or otherwise preferable to other selections.
  • the term “includes” and its variants are to be read as open terms that mean “includes, but is not limited to. ”
  • the term “based on” is to be read as “based at least in part on. ”
  • the term “one embodiment” and “an embodiment” are to be read as “at least one embodiment. ”
  • the term “another embodiment” is to be read as “at least one other embodiment. ”
  • the use of an expression such as “Aand/or B” can mean either “only A” or “only B” or “both A and B. ”
  • Other definitions, explicit and implicit, may be included below.
  • the term “common interlace” may refer to a set of PRBs shared by a plurality of UEs for transmitting a PSFCH.
  • the common interlace may be used to meet an occupied channel bandwidth (OCB) requirement on the unlicensed spectrum.
  • OCB occupied channel bandwidth
  • HARQ feedback on PSFCHs for the sidelink transmissions on an unlicensed spectrum is a suitable way to achieve the high reliability of the sidelink communications.
  • the support of sidelink on an unlicensed spectrum has been discussed as follows.
  • the legacy PSFCH channel only occupies 1 PRB. To meet the OCB requirement of the unlicensed spectrum, the following agreement has been made:
  • each PSFCH occupies 1 common interlace and K3 dedicated PRB (s) .
  • the transmission interlace is used to meet the OCB requirement on the unlicensed spectrum, and the dedicated PRB (s) are used to carry useful information.
  • PSFCH transmission power is determined as follows:
  • the transmitting power on common interlace and dedicated PRB (s) may be determined based on a (pre-) configured offset, as discussed in the following working assumption and specification:
  • a UE in SL-U, may initiate a COT with type 1 listen before talk (LBT) and perform sidelink transmissions within the initiated COT.
  • LBT listen before talk
  • the COT may be lost due to no PSFCH will be transmitted if the PSFCH occasion is within the COT.
  • RAN1 radio access network workgroup 1
  • Embodiments of the present disclosure provide a solution for power control of PSFCH transmissions, in particular, when the UE only transmits the PSFCH on the common interlace.
  • a UE determines that a PSFCH occupies a common interlace and one or more dedicated PRBs.
  • the UE determines transmitting power for the common interlace.
  • the UE transmits, based on the transmitting power for the common interlace, a part of the PSFCH occupying the common interlace without transmitting another part of the PSFCH occupying the one or more dedicated PRBs on a PSFCH occasion within a COT initiated by the UE or within a COT shared by another UE.
  • This solution allows to determine the transmitting power for the common interlace efficiently, and then on this basis, the part of the PSFCH occupying the common interlace is transmitted. In this way, it is possible to improve the PSFCH transmission on the common interlace with enhanced efficiency.
  • FIG. 1 illustrates an example of a wireless communications system 100 that supports power control of PSFCH transmissions in accordance with aspects of the present disclosure.
  • the wireless communications system 100 may include one or more network entities 102 (also referred to as network equipment (NE) ) , one or more UEs 104, a core network 106, and a packet data network 108.
  • the wireless communications system 100 may support various radio access technologies.
  • the wireless communications system 100 may be a 4G network, such as a long term evolution (LTE) network or an LTE-Advanced (LTE-A) network.
  • LTE long term evolution
  • LTE-A LTE-Advanced
  • the wireless communications system 100 may be a 5G network, such as a new radio (NR) network.
  • NR new radio
  • the wireless communications system 100 may be a combination of a 4G network and a 5G network, or other suitable radio access technology including Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20.
  • IEEE Institute of Electrical and Electronics Engineers
  • Wi-Fi Wi-Fi
  • WiMAX IEEE 802.16
  • IEEE 802.20 The wireless communications system 100 may support radio access technologies beyond 5G. Additionally, the wireless communications system 100 may support technologies, such as time division multiple access (TDMA) , frequency division multiple access (FDMA) , or code division multiple access (CDMA) , etc.
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • CDMA code division multiple access
  • the one or more network entities 102 may be dispersed throughout a geographic region to form the wireless communications system 100.
  • One or more of the network entities 102 described herein may be or include or may be referred to as a network node, a base station, a network element, a radio access network (RAN) , a base transceiver station, an access point, a NodeB, an eNodeB (eNB) , a next-generation NodeB (gNB) , or other suitable terminology.
  • a network entity (NE) 102 and a UE 104 may communicate via a communication link 110, which may be a wireless or wired connection.
  • a network entity 102 and a UE 104 may perform wireless communication (e.g., receive signaling, transmit signaling) over a Uu interface.
  • a network entity 102 may provide a geographic coverage area 112 for which the network entity 102 may support services (e.g., voice, video, packet data, messaging, broadcast, etc. ) for one or more UEs 104 within the geographic coverage area 112.
  • a network entity 102 and a UE 104 may support wireless communication of signals related to services (e.g., voice, video, packet data, messaging, broadcast, etc. ) according to one or multiple radio access technologies.
  • a network entity 102 may be moveable, for example, a satellite associated with a non-terrestrial network.
  • different geographic coverage areas 112 associated with the same or different radio access technologies may overlap, but the different geographic coverage areas 112 may be associated with different network entities 102.
  • Information and signals described herein may be represented using any of a variety of different technologies and techniques.
  • data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
  • the one or more UEs 104 may be dispersed throughout a geographic region of the wireless communications system 100.
  • a UE 104 may include or may be referred to as a mobile device, a wireless device, a remote device, a remote unit, a handheld device, or a subscriber device, or some other suitable terminology.
  • the UE 104 may be referred to as a unit, a station, a terminal, or a client, among other examples.
  • the UE 104 may be referred to as an Internet-of-Things (IoT) device, an Internet-of-Everything (IoE) device, or machine-type communication (MTC) device, among other examples.
  • IoT Internet-of-Things
  • IoE Internet-of-Everything
  • MTC machine-type communication
  • a UE 104 may be stationary in the wireless communications system 100.
  • a UE 104 may be mobile in the wireless communications system 100.
  • the one or more UEs 104 may be devices in different forms or having different capabilities. Some examples of UEs 104 are illustrated in FIG. 1.
  • a UE 104 may be capable of communicating with various types of devices, such as the network entities 102, other UEs 104, or network equipment (e.g., the core network 106, the packet data network 108, a relay device, an integrated access and backhaul (IAB) node, or another network equipment) , as shown in FIG. 1.
  • a UE 104 may support communication with other network entities 102 or UEs 104, which may act as relays in the wireless communications system 100.
  • one or more network entities 102 may include subcomponents, such as an access network entity, which may be an example of an access node controller (ANC) .
  • An ANC may communicate with the one or more UEs 104 through one or more other access network transmission entities, which may be referred to as a radio heads, smart radio heads, or transmission-reception points (TRPs) .
  • TRPs transmission-reception points
  • a network entity 102 may be configured in a disaggregated architecture, which may be configured to utilize a protocol stack physically or logically distributed among two or more network entities 102, such as an integrated access backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance) , or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN) ) .
  • IAB integrated access backhaul
  • O-RAN open RAN
  • vRAN virtualized RAN
  • C-RAN cloud RAN
  • a network entity 102 may include one or more of a central unit (CU) , a distributed unit (DU) , a radio unit (RU) , a RAN Intelligent Controller (RIC) (e.g., a Near-Real Time RIC (Near-RT RIC) , a Non-Real Time RIC (Non-RT RIC) ) , a Service Management and Orchestration (SMO) system, or any combination thereof.
  • CU central unit
  • DU distributed unit
  • RU radio unit
  • RIC RAN Intelligent Controller
  • RIC e.g., a Near-Real Time RIC (Near-RT RIC) , a Non-Real Time RIC (Non-RT RIC)
  • SMO Service Management and Orchestration
  • An RU may also be referred to as a radio head, a smart radio head, a remote radio head (RRH) , a remote radio unit (RRU) , or a transmission reception point (TRP) .
  • One or more components of the network entities 102 in a disaggregated RAN architecture may be co-located, or one or more components of the network entities 102 may be located in distributed locations (e.g., separate physical locations) .
  • one or more network entities 102 of a disaggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU) , a virtual DU (VDU) , a virtual RU (VRU) ) .
  • VCU virtual CU
  • VDU virtual DU
  • VRU virtual RU
  • the CU may host upper protocol layer (e.g., a layer 3 (L3) , a layer 2 (L2) ) functionality and signaling (e.g., Radio Resource Control (RRC) , service data adaption protocol (SDAP) , Packet Data Convergence Protocol (PDCP) ) .
  • RRC Radio Resource Control
  • SDAP service data adaption protocol
  • PDCP Packet Data Convergence Protocol
  • the CU may be connected to one or more DUs or RUs, and the one or more DUs or RUs may host lower protocol layers, such as a layer 1 (L1) (e.g., physical (PHY) layer) or an L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU.
  • L1 e.g., physical (PHY) layer
  • L2 e.g., radio link control (RLC) layer, medium access control
  • a functional split of the protocol stack may be employed between a DU and an RU such that the DU may support one or more layers of the protocol stack and the RU may support one or more different layers of the protocol stack.
  • the DU may support one or multiple different cells (e.g., via one or more RUs) .
  • a functional split between a CU and a DU, or between a DU and an RU may be within a protocol layer (e.g., some functions for a protocol layer may be performed by one of a CU, a DU, or an RU, while other functions of the protocol layer are performed by a different one of the CU, the DU, or the RU) .
  • a CU may be functionally split further into CU control plane (CU-CP) and CU user plane (CU-UP) functions.
  • a CU may be connected to one or more DUs via a midhaul communication link (e.g., F1, F1 c, F1 u)
  • a DU may be connected to one or more RUs via a fronthaul communication link (e.g., open fronthaul (FH) interface)
  • FH open fronthaul
  • a midhaul communication link or a fronthaul communication link may be implemented in accordance with an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities 102 that are in communication via such communication links .
  • the core network 106 may support user authentication, access authorization, tracking, connectivity, and other access, routing, or mobility functions.
  • the core network 106 may be an evolved packet core (EPC) , or a 5G core (5GC) , which may include a control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management functions (AMF) ) and a user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) .
  • EPC evolved packet core
  • 5GC 5G core
  • MME mobility management entity
  • AMF access and mobility management functions
  • S-GW serving gateway
  • PDN gateway Packet Data Network gateway
  • UPF user plane function
  • control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management (e.g., data bearers, signal bearers, etc. ) for the one or more UEs 104 served by the one or more network entities 102 associated with the core network 106.
  • NAS non-access stratum
  • the core network 106 may communicate with the packet data network 108 over one or more backhaul links 116 (e.g., via an S1, N2, N3, or another network interface) .
  • the packet data network 108 may include an application server 118.
  • one or more UEs 104 may communicate with the application server 118.
  • a UE 104 may establish a session (e.g., a protocol data unit (PDU) session, or the like) with the core network 106 via a network entity 102.
  • the core network 106 may route traffic (e.g., control information, data, and the like) between the UE 104 and the application server 118 using the established session (e.g., the established PDU session) .
  • the PDU session may be an example of a logical connection between the UE 104 and the core network 106 (e.g., one or more network functions of the core network 106) .
  • the network entities 102 and the UEs 104 may use resources of the wireless communications system 100 (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers) ) to perform various operations (e.g., wireless communications) .
  • the network entities 102 and the UEs 104 may support different resource structures.
  • the network entities 102 and the UEs 104 may support different frame structures.
  • the network entities 102 and the UEs 104 may support a single frame structure.
  • the network entities 102 and the UEs 104 may support various frame structures (i.e., multiple frame structures) .
  • the network entities 102 and the UEs 104 may support various frame structures based on one or more numerologies.
  • One or more numerologies may be supported in the wireless communications system 100, and a numerology may include a subcarrier spacing and a cyclic prefix.
  • a time interval of a resource may be organized according to slots.
  • a subframe may include a number (e.g., quantity) of slots.
  • the number of slots in each subframe may also depend on the one or more numerologies supported in the wireless communications system 100.
  • Each slot may include a number (e.g., quantity) of symbols (e.g., OFDM symbols) .
  • the number (e.g., quantity) of slots for a subframe may depend on a numerology.
  • a slot For a normal cyclic prefix, a slot may include 14 symbols.
  • a slot For an extended cyclic prefix (e.g., applicable for 60 kHz subcarrier spacing) , a slot may include 12 symbols.
  • an electromagnetic (EM) spectrum may be split, based on frequency or wavelength, into various classes, frequency bands, frequency channels, etc.
  • the wireless communications system 100 may support one or multiple operating frequency bands, such as frequency range designations FR1 (410 MHz –7.125 GHz) , FR2 (24.25 GHz –52.6 GHz) , FR3 (7.125 GHz –24.25 GHz) , FR4 (52.6 GHz –114.25 GHz) , FR4a or FR4-1 (52.6 GHz –71 GHz) , and FR5 (114.25 GHz –300 GHz) .
  • FR1 410 MHz –7.125 GHz
  • FR2 24.25 GHz –52.6 GHz
  • FR3 7.125 GHz –24.25 GHz
  • FR4 (52.6 GHz –114.25 GHz)
  • FR4a or FR4-1 52.6 GHz –71 GHz
  • FR5 114.25 GHz
  • the network entities 102 and the UEs 104 may perform wireless communications over one or more of the operating frequency bands.
  • FR1 may be used by the network entities 102 and the UEs 104, among other equipment or devices for cellular communications traffic (e.g., control information, data) .
  • FR2 may be used by the network entities 102 and the UEs 104, among other equipment or devices for short-range, high data rate capabilities.
  • FR1 may be associated with one or multiple numerologies (e.g., at least three numerologies) .
  • FR2 may be associated with one or multiple numerologies (e.g., at least 2 numerologies) .
  • FIG. 2 illustrates a flowchart of a method 200 that supports power control of PSFCH transmissions in accordance with aspects of the present disclosure.
  • the operations of the method 200 may be implemented by a device or its components as described herein.
  • the operations of the method 200 may be performed by the UE 104 as described herein.
  • the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
  • the method 200 will be described with reference to FIG. 1.
  • the method may include determining that a PSFCH occupies a common interlace and one or more dedicated PRBs.
  • the above PSFCH structure Alt 1-1b is used.
  • only a part of the PSFCH occupying the common interlace may need to be transmitted within a COT initiated by the UE 104 or within a COT shared by another UE.
  • the UE 104 may determine to transmit the PSFCH occupying the common interlace to avoid the COT interruption.
  • the UE 104 may determine to perform the common interlace transmissions within all the RB sets occupied by the COT.
  • the UE 104 may determine that the part of the PSFCH occupying the common interlace is to be transmitted and another part of the PSFCH occupying the one or more dedicated PRBs is not to be transmitted, if it is determined that the UE 104 does not intend to transmit the PSFCH and does not expect to receive the PSFCH on the PSFCH occasion, and the UE 104 performs a PSCCH transmission or a PSSCH transmission just before the PSFCH occasion in the same slot, and the UE 104 intends to transmit one of a PSCCH, a PSSCH, or a sidelink synchronization signal block (S-SSB) after the PSFCH occasion within the COT initiated by the UE 104 or within the COT shared by the other UE.
  • S-SSB sidelink synchronization signal block
  • the UE 104 may determine to transmit the PSFCH only on the common interlace on the PSFCH occasion within the initiated COT, when the UE 104 does not intend to transmit PSFCH and does not expect to receive PSFCH on the PSFCH occasion within a SL-BWP, and the UE 104 performs a PSCCH/PSSCH transmission just before the PSFCH occasion in the same slot, and the UE 104 intends to transmit PSCCH/PSSCH or S-SSB after the PSFCH occasion within the COT initiated by the UE 104.
  • the UE 104 may determine to transmit PSFCH only on the common interlace on the PSFCH occasion within the COT based on COT sharing, when the UE 104 does not intend to transmit PSFCH and does not expect to receive PSFCH on the PSFCH occasion within a sidelink bandwidth part (SL-BWP) , and the UE 104 performs a PSCCH/PSSCH transmission just before the PSFCH occasion in the same slot, and the UE 104 intends to transmit a PSCCH/PSSCH that can utilize the shared COT or a S-SSB after the PSFCH occasion within the COT shared by the other UE.
  • S-BWP sidelink bandwidth part
  • the sidelink HARQ feedback may be disabled or enabled.
  • the UE 104 may not expect to receive the PSFCH on the PSFCH occasion if it determines that a PSSCH associated with the PSFCH occasion is transmitted with broadcast.
  • the UE 104 may not expect to receive the PSFCH on the PSFCH occasion if it determines that a PSSCH associated with the PSFCH occasion is transmitted with unicast or groupcast, and the sidelink HARQ feedback is disabled, for example, based on the associated sidelink control information (SCI) .
  • SCI sidelink control information
  • the PSFCH may be used for conflict information.
  • the UE 104 may not expect to receive the PSFCH on the PSFCH occasion if the UE 104 is not configured with a capability to receive conflict information.
  • the reception of the PSFCH may not be expected if the UE 104 is not a UE to receive conflict information, for example, if a bit value of “Conflict information receiver flag” in the SCI format 1-Ais 0.
  • the UE 104 may determine whether to expect the reception of the PSFCH on the PSFCH occasion based on a priority of a PSSCH associated with the PSFCH.
  • the UE 104 may not expect to receive the PSFCH on the PSFCH occasion.
  • the priority of the PSSCH is higher than or equal to a priority threshold (for example, the priority field value in the associated SCI is smaller than the priority threshold)
  • the UE 104 may not expect to receive the PSFCH on the PSFCH occasion.
  • the priority threshold may be preconfigured or configured by the NE 102.
  • the method may include determining transmitting power for the common interlace.
  • configured or pre-configured maximum transmitting power for the PSFCH may be used to determine the transmitting power for the common interlace.
  • the configured P CMAX may also used to perform power control for the PSFCH on the common interlace.
  • the P CMAX may be upbound of the transmitting power for the common interlace.
  • the determined transmitting power for the common interlace may be equally distributed to PRBs within the common interlace.
  • the power control may be performed as follows:
  • P PSFCH common interlace represents the transmitting power for the common interlace
  • P O PSFCH represents the value of dl-P0-PSFCH
  • ⁇ PSFCH represents the value of another higher layer parameter dl ⁇ Alpha ⁇ PSFCH
  • ⁇ represents the subcarrier spacing
  • ⁇ represents the number of actually transmitted resource blocks of the common interlace on the PSFCH occasion
  • PL represents the path loss.
  • the transmitting power on each PRB within the common interlace may be the same, and it may be calculated as
  • the transmitting power on each PRB within resource blocks may be the same, and it may be calculated as
  • a separate power parameter may be configured or pre-configured to control the transmitting power for the common interlace.
  • the transmitting power for the common interlace may be determined based on configured or pre-configured total/maximum transmitting power for the common interlace. Then, the total/maximum transmitting power for the common interlace may be equally distributed among the PRBs within the common interlace.
  • the total transmitting power for the common interlace may be (pre-) configured as P CMAX, common interlace (P CMAX, common interlace ⁇ P CMAX ) .
  • the power control may be performed as follows:
  • P PSFCH common interlace represents the transmitting power for the common interlace
  • P O PSFCH represents the value of dl-P0-PSFCH
  • ⁇ PSFCH represents the value of dl ⁇ Alpha ⁇ PSFCH
  • PL represents the path loss.
  • the transmitting power on each PRB within the common interlace may be the same, and it may be calculated as
  • the transmitting power may be calculated as
  • the transmitting power for the common interlace may be determined based on configured or pre-configured transmitting power for each PRB within the common interlace.
  • the transmitting power for each PRB within the common interlace may be may be (pre-) configured as P PSFCH, common PRB .
  • the power control may be performed as follows:
  • P PSFCH, common interlace represents the transmitting power for the common interlace
  • P O, PSFCH represents the value of dl-P0-PSFCH
  • ⁇ PSFCH represents the value of dl ⁇ Alpha ⁇ PSFCH
  • ⁇ represents the subcarrier spacing
  • ⁇ represents the subcarrier spacing
  • PL represents the path loss.
  • the transmitting power on each PRB within the common interlace may be min (P PSFCH, common PRB , P O, PSFCH +10 log 10 (2 ⁇ ) + ⁇ PSFCH ⁇ PL ) [dBm] .
  • the transmitting power on each PRB within the common interlace may be P PSFCH, common PRB [dBm] .
  • the determined transmitting power for the common interlace may be equally distributed to PRBs within the common interlace. As an example, the power control may be performed as follows:
  • P PSFCH common interlace represents the transmitting power for the common interlace
  • P O PSFCH represents the value of dl-P0-PSFCH
  • ⁇ PSFCH represents the value of dl ⁇ Alpha ⁇ PSFCH
  • PL represents the path loss.
  • the transmitting power on each PRB within the common interlace may be the same, and it may be calculated as
  • common interlace P CMAX -P CMAX, offset .
  • the transmitting power on each PRB within the common interlace may be the same, and it may be calculated as
  • the transmitting power for the common interlace may be determined based on an assumption that the common interlace and the one or more dedicated PRBs are transmitted, and a reference number of PSFCHs are transmitted on the PSFCH occasion.
  • the current power determination method for the common interlace and the dedicated PRBs when both the common interlace and the dedicated PRBs will be transmitted may be used with the assumption that the UE 104 will transmit a reference number of PSFCHs on the PSFCH occasion
  • the reference number may be determined flexibly.
  • the reference number may be one.
  • the reference number may be the maximum number of PSFCHs that the UE 104 is capable to transmit at the same time.
  • the reference number of PSFCHs may be equal to the maximum of N max, PSFCH PSFCHs which is based on UE capability.
  • the reference number may be configured or pre-configured. This determination approach of the transmitting power for the common interlace can save signaling overhead efficiently.
  • the method may include transmitting, based on the transmitting power for the common interlace, the part of the PSFCH occupying the common interlace without transmitting the other part of the PSFCH occupying the one or more dedicated PRBs on the PSFCH occasion within the COT initiated by the UE 104 or within the COT shared by the other UE. Based on the transmission of the part of the PSFCH occupying the common interlace, it is allowed to avoid COT interruption.
  • the above determination approaches for the common interlace make it better to transmit the part of the PSFCH occupying the common interlace. In this way, it is possible to improve the PSFCH transmission on the common interlace with enhanced efficiency.
  • FIG. 3 illustrates an example of a device 300 that supports power control of PSFCH transmissions in accordance with aspects of the present disclosure.
  • the device 300 may be an example of the UE 104 as described herein.
  • the device 300 may support wireless communication with one or more network entities 102, UEs 104, or any combination thereof.
  • the device 300 may include components for bi-directional communications including components for transmitting and receiving communications, such as a processor 302, a memory 304, a transceiver 306, and, optionally, an I/O controller 308. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .
  • the processor 302, the memory 304, the transceiver 306, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein.
  • the processor 302, the memory 304, the transceiver 306, or various combinations or components thereof may support a method for performing one or more of the operations described herein.
  • the processor 302, the memory 304, the transceiver 306, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) .
  • the hardware may include a processor, a digital signal processor (DSP) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure.
  • the processor 302 and the memory 304 coupled with the processor 302 may be configured to perform one or more of the functions described herein (e.g., executing, by the processor 302, instructions stored in the memory 304) .
  • the processor 302 may support wireless communication at the device 300 in accordance with examples as disclosed herein.
  • the processor 302 may be configured to operable to support a means for determining that a PSFCH occupies a common interlace and one or more dedicated PRBs; a means for determining transmitting power for the common interlace; and a means for transmitting, based on the transmitting power for the common interlace, a part of the PSFCH occupying the common interlace without transmitting another part of the PSFCH occupying the one or more dedicated PRBs on a PSFCH occasion within a COT initiated by the UE or within a COT shared by another UE.
  • the processor 302 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof) .
  • the processor 302 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into the processor 302.
  • the processor 302 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 304) to cause the device 300 to perform various functions of the present disclosure.
  • the memory 304 may include random access memory (RAM) and read-only memory (ROM) .
  • the memory 304 may store computer-readable, computer-executable code including instructions that, when executed by the processor 302 cause the device 300 to perform various functions described herein.
  • the code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory.
  • the code may not be directly executable by the processor 302 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • the memory 304 may include, among other things, a basic I/O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • BIOS basic I/O system
  • the I/O controller 308 may manage input and output signals for the device 300.
  • the I/O controller 308 may also manage peripherals not integrated into the device M02.
  • the I/O controller 308 may represent a physical connection or port to an external peripheral.
  • the I/O controller 308 may utilize an operating system such as or another known operating system.
  • the I/O controller 308 may be implemented as part of a processor, such as the processor 306.
  • a user may interact with the device 300 via the I/O controller 308 or via hardware components controlled by the I/O controller 308.
  • the device 300 may include a single antenna 310. However, in some other implementations, the device 300 may have more than one antenna 310 (i.e., multiple antennas) , including multiple antenna panels or antenna arrays, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • the transceiver 306 may communicate bi-directionally, via the one or more antennas 310, wired, or wireless links as described herein. For example, the transceiver 306 may represent a wireless transceiver and may communicate bi- directionally with another wireless transceiver.
  • the transceiver 306 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 310 for transmission, and to demodulate packets received from the one or more antennas 310.
  • the transceiver 306 may include one or more transmit chains, one or more receive chains, or a combination thereof.
  • a transmit chain may be configured to generate and transmit signals (e.g., control information, data, packets) .
  • the transmit chain may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium.
  • the at least one modulator may be configured to support one or more techniques such as amplitude modulation (AM) , frequency modulation (FM) , or digital modulation schemes like phase-shift keying (PSK) or quadrature amplitude modulation (QAM) .
  • the transmit chain may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over the wireless medium.
  • the transmit chain may also include one or more antennas 310 for transmitting the amplified signal into the air or wireless medium.
  • a receive chain may be configured to receive signals (e.g., control information, data, packets) over a wireless medium.
  • the receive chain may include one or more antennas 310 for receive the signal over the air or wireless medium.
  • the receive chain may include at least one amplifier (e.g., a low-noise amplifier (LNA) ) configured to amplify the received signal.
  • the receive chain may include at least one demodulator configured to demodulate the receive signal and obtain the transmitted data by reversing the modulation technique applied during transmission of the signal.
  • the receive chain may include at least one decoder for decoding the processing the demodulated signal to receive the transmitted data.
  • FIG. 4 illustrates an example of a processor 400 that supports power control of PSFCH transmissions in accordance with aspects of the present disclosure.
  • the processor 400 may be an example of a processor configured to perform various operations in accordance with examples as described herein.
  • the processor 400 may include a controller 402 configured to perform various operations in accordance with examples as described herein.
  • the processor 400 may optionally include at least one memory 404, such as L1/L2/L3 cache. Additionally, or alternatively, the processor 400 may optionally include one or more arithmetic-logic units (ALUs) 400.
  • ALUs arithmetic-logic units
  • the processor 400 may be a processor chipset and include a protocol stack (e.g., a software stack) executed by the processor chipset to perform various operations (e.g., receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) in accordance with examples as described herein.
  • a protocol stack e.g., a software stack
  • operations e.g., receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading
  • the processor chipset may include one or more cores, one or more caches (e.g., memory local to or included in the processor chipset (e.g., the processor 400) or other memory (e.g., random access memory (RAM) , read-only memory (ROM) , dynamic RAM (DRAM) , synchronous dynamic RAM (SDRAM) , static RAM (SRAM) , ferroelectric RAM (FeRAM) , magnetic RAM (MRAM) , resistive RAM (RRAM) , flash memory, phase change memory (PCM) , and others) .
  • RAM random access memory
  • ROM read-only memory
  • DRAM dynamic RAM
  • SDRAM synchronous dynamic RAM
  • SRAM static RAM
  • FeRAM ferroelectric RAM
  • MRAM magnetic RAM
  • RRAM resistive RAM
  • PCM phase change memory
  • the controller 402 may be configured to manage and coordinate various operations (e.g., signaling, receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) of the processor 400 to cause the processor 400 to support various operations of a base station in accordance with examples as described herein.
  • the controller 402 may operate as a control unit of the processor 400, generating control signals that manage the operation of various components of the processor 400. These control signals include enabling or disabling functional units, selecting data paths, initiating memory access, and coordinating timing of operations.
  • the controller 402 may be configured to fetch (e.g., obtain, retrieve, receive) instructions from the memory 404 and determine subsequent instruction (s) to be executed to cause the processor 400 to support various operations in accordance with examples as described herein.
  • the controller 402 may be configured to track memory address of instructions associated with the memory 404.
  • the controller 402 may be configured to decode instructions to determine the operation to be performed and the operands involved.
  • the controller 402 may be configured to interpret the instruction and determine control signals to be output to other components of the processor 400 to cause the processor 400 to support various operations in accordance with examples as described herein.
  • the controller 402 may be configured to manage flow of data within the processor 400.
  • the controller 402 may be configured to control transfer of data between registers, arithmetic logic units (ALUs) , and other functional units of the processor 400.
  • ALUs arithmetic logic units
  • the memory 404 may include one or more caches (e.g., memory local to or included in the processor 400 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc. In some implementations, the memory 404 may reside within or on a processor chipset (e.g., local to the processor 400) . In some other implementations, the memory 404 may reside external to the processor chipset (e.g., remote to the processor 400) .
  • caches e.g., memory local to or included in the processor 400 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc.
  • the memory 404 may reside within or on a processor chipset (e.g., local to the processor 400) . In some other implementations, the memory 404 may reside external to the processor chipset (e.g., remote to the processor 400) .
  • One or more ALUs 400 be configured with a variety of logical and arithmetic circuits, including adders, subtractors, shifters, and logic gates, to process and manipulate the data according to the operation. Additionally, or alternatively, the one or more ALUs 400 may support logical operations such as AND, OR, exclusive-OR (XOR) , not-OR (NOR) , and not-AND (NAND) , enabling the one or more ALUs 400 to handle conditional operations, comparisons, and bitwise operations.
  • logical operations such as AND, OR, exclusive-OR (XOR) , not-OR (NOR) , and not-AND (NAND) , enabling the one or more ALUs 400 to handle conditional operations, comparisons, and bitwise operations.
  • the processor 400 may support wireless communication in accordance with examples as disclosed herein.
  • the processor 400 may be configured to or operable to support a means for determining that a PSFCH occupies a common interlace and one or more dedicated PRBs; a means for determining transmitting power for the common interlace; and a means for transmitting, based on the transmitting power for the common interlace, a part of the PSFCH occupying the common interlace without transmitting another part of the PSFCH occupying the one or more dedicated PRBs on a PSFCH occasion within a COT initiated by the UE or within a COT shared by another UE.
  • the functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
  • Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer.
  • non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM) , flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor.
  • an article “a” before an element is unrestricted and understood to refer to “at least one” of those elements or “one or more” of those elements.
  • the terms “a, ” “at least one, ” “one or more, ” and “at least one of one or more” may be interchangeable.
  • a list of items indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) .
  • the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure.
  • the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on.
  • a “set” may include one or more elements.

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Abstract

Divers aspects de la présente divulgation concernent la commande de puissance de transmissions de canal physique de rétroaction de liaison latérale (PSFCH). Dans certains modes de réalisation, un équipement utilisateur (UE) détermine qu'un PSFCH occupe un entrelacement commun et un ou plusieurs blocs de ressources physiques (PRB) dédiés. De plus, l'UE détermine la puissance de transmission pour l'entrelacement commun. Ensuite, l'UE transmet, sur la base de la puissance de transmission pour l'entrelacement commun, une partie du PSFCH occupant l'entrelacement commun sans transmettre une autre partie du PSFCH occupant le ou les PRB dédiés sur une occasion PSFCH dans un temps d'occupation de canal (COT) initié par l'UE ou dans un COT partagé par un autre UE. De cette manière, il est possible d'améliorer la transmission PSFCH sur l'entrelacement commun avec une efficacité améliorée.
PCT/CN2023/129442 2023-11-02 2023-11-02 Commande de puissance de transmissions psfch Pending WO2024159839A1 (fr)

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