WO2023015447A1 - Procédé et appareil de détermination de synchronisation - Google Patents

Procédé et appareil de détermination de synchronisation Download PDF

Info

Publication number
WO2023015447A1
WO2023015447A1 PCT/CN2021/111808 CN2021111808W WO2023015447A1 WO 2023015447 A1 WO2023015447 A1 WO 2023015447A1 CN 2021111808 W CN2021111808 W CN 2021111808W WO 2023015447 A1 WO2023015447 A1 WO 2023015447A1
Authority
WO
WIPO (PCT)
Prior art keywords
node
timing
transmission timing
iab
parent
Prior art date
Application number
PCT/CN2021/111808
Other languages
English (en)
Inventor
Hongmei Liu
Zhi YAN
Yuantao Zhang
Lianhai WU
Haiming Wang
Original Assignee
Lenovo (Beijing) Limited
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) Limited filed Critical Lenovo (Beijing) Limited
Priority to PCT/CN2021/111808 priority Critical patent/WO2023015447A1/fr
Publication of WO2023015447A1 publication Critical patent/WO2023015447A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/0015—Synchronization between nodes one node acting as a reference for the others

Definitions

  • Embodiments of the present application generally relate to wireless communication technology, especially to timing technology in a wireless communication system.
  • RNs relay nodes
  • 3GPP 3rd Generation Partnership Project
  • RNs relay nodes
  • BS base station
  • UE user equipment
  • a BS that can provide connection to at least one RN is called a donor BS with the RN being connected to a donor BS by a backhaul link.
  • a Relay Node may hop through one or more RNs before reaching a donor BS or may be directly connected to the donor BS.
  • 3GPP is envisioning an integrated access and backhaul (IAB) architecture to support multi-hop relays, wherein a single IAB node may act as a parent IAB node and as a child IAB node, simultaneously, within the IAB architecture. This means that the IAB mode may simultaneously receive data, including signalling etc., from a parent node on a backhaul downlink (DL) and from a child node on a backhaul uplink (UL) .
  • DL backhaul downlink
  • UL backhaul uplink
  • TDM time divisional multiplexing
  • Rx simultaneous reception
  • Tx simultaneous transmission
  • Tx simultaneous DL
  • simultaneous UL simultaneous UL
  • TDM means that the time domain resources for the parent link and child link are different.
  • Simultaneous Rx means that the parent downlink and child uplink are performed simultaneously.
  • Simultaneous Tx means that the parent uplink and child downlink are performed simultaneously.
  • Simultaneous DL means that the parent downlink and child downlink are performed simultaneously.
  • Simultaneous UL means the parent uplink and child uplink are performed simultaneously.
  • DL Tx timing for the parent link and child link are aligned, and there is no restriction on uplink timing.
  • Rx For simultaneous Rx, DL Tx timing for the parent link and child link are aligned, and DL Rx timing for the parent link and UL Rx timing for child link are also aligned.
  • DL Tx timing for the parent link and child link are aligned, and UL Tx timing on the parent link and DL Tx timing on child link are aligned.
  • UL Tx timing on the parent link and uplink Rx timing on the child link are aligned.
  • DL Rx timing for the parent link and DL Tx timing for the child link are aligned.
  • one of the DL transmission timing on the parent link and the child link may be shifted compared to a DL transmission timing where DL transmission timing of at least part IAB nodes are supposed to be aligned, which will impact the timing or synchronization on the same hop or neighbor hop(s) and thus should be considered when determining transmission timing and reception timing on the associated link (s) .
  • One object of the embodiments of the present application is to provide a timing determination scheme, especially a timing determination scheme considering timing shift in a wireless communication network employing an IAB architecture.
  • Some embodiments of the present application provides a method, including: receiving at least one signaling for determining at least one of: UL transmission timing, DL transmission timing and DL reception timing between the first node and the second node, wherein the second node is a child node of the first node, in the case that at least one of the following: the DL transmission timing between the first node and the second node, DL transmission timing between a parent node of the first node and the first node, and DL transmission timing between the second node and a child node of the second node is to be shifted compared to a aligned DL transmission timing where DL transmission timing of the first node and the second node are supposed to be aligned; and determining at least one of: the UL transmission timing, the DL transmission timing and the DL reception timing between the first node and the second node based on the at least one signaling.
  • the at least one signaling indicates the DL transmission timing between the first node and the second node is to be advanced with respect to the aligned DL transmission timing by a first value, or is delayed with respect to the aligned DL transmission timing by a second value, wherein the first value is determined based on a propagation delay between the first node and the second node or is configured by a signaling, and the second value is determined based on a propagation delay between the parent node of the first node and the first node or is configured by a signaling.
  • the DL reception timing between the first node and the second node is also advanced with respect to a first DL reception timing determined based on the aligned DL transmission timing by the first value, or is delayed with respect to the first DL reception by the second value.
  • the UL transmission timing between the first node and the second node is also delayed with respect to a first UL transmission timing determined based on the aligned DL transmission timing by the first value, or is advanced with respect to the first UL transmission timing by the second value.
  • the DL transmission timing between the parent node of the first node and the first node is advanced, the DL transmission timing between the first node and the second node is to be the same as the DL reception timing between the parent node of the first node and the first node.
  • the DL transmission timing between the parent node of the first node and the first node is delayed
  • the DL transmission timing between the first node and the second node is delayed with respect to the aligned DL transmission timing by a value
  • the value is determined based on a propagation delay between a grandparent node of the first node and the parent node of the first node or is configured by a signaling.
  • the UL transmission timing between the first node and the second node is advanced with respect to the aligned DL transmission timing by a value, and the value is determined based on propagation delay between the second node and the child node of the second node.
  • the propagation delay between the second node and the child of the second node is reported by the second node to the first node.
  • the UL transmission timing between the first node and the second node is delayed with respect to the aligned DL transmission timing by a value DL transmission, and the value is determined based on a propagation delay between the first node and the second node.
  • the UL transmission timing between the first node and the second node is advanced with respect to the aligned DL transmission timing by a value, and the value is determined based on the propagation delay between the first node and the second node.
  • the UL transmission timing between the first node and the second node is delayed based on at least one of: a propagation delay between the parent node of the first node and a grandfather node of the first node, a propagation delay between the first node and the parent node of the first node, and the propagation delay between the first node and the second node.
  • the propagation delay between the parent node of the first node and a grandfather node of the first node is transmitted from the first node to the second node.
  • the at least one signaling is indicated by at least one multiplexing mode of the following: a multiplexing mode of the parent node of the first node and a grandfather node of the first node from the first node, a multiplexing mode of the parent node of the first node and the first node, a multiplexing mode of the second node and first node, and a multiplexing mode of the second node and the child node of the second node.
  • a signaling of the at least one signaling is indicated by at least one of: a time-frequency resource, a time-frequency resource set, a spatial domain filter, power of at least one of: UL transmission, UL reception, DL transmission and DL reception between the first node and the second node, UL transmission, UL reception, DL transmission and DL reception between the second node and the child node of the second node, and UL transmission, UL reception, DL transmission and DL reception between the parent node of the first node and the first node, and UL transmission, UL reception, DL transmission and DL reception between the grandparent node of the first node and the parent node of the first node.
  • a signaling of the at least one signaling is at least one time domain resource associated with at least one the UL transmission timing, DL transmission timing, DL reception timing.
  • the method is performed in the first node and the at least one signaling is received from the parent node of the first node, or is performed in the second node and the at least one signaling is received from the first node.
  • Some other embodiments of the present application provides a method, including: determining at least one of: UL transmission timing, DL transmission timing and DL reception timing between a first node and a second node, wherein the second node is a child node of the first node, in the case that at least one of the following: the DL transmission timing between the first node and the second node, DL transmission timing between a parent node of the first node and the first node, and DL transmission timing between the second node and a child node of the second node is to be shifted compared to a aligned DL transmission timing where DL transmission timing of the first node and the second node are supposed to be aligned; and transmitting at least one signaling for determining at least one of: the UL transmission timing, the DL transmission timing and the DL reception timing between the first node and the second node.
  • Some yet other embodiments of the present application provides an apparatus, including: at least one non-transitory computer-readable medium having computer executable instructions stored therein; at least one receiver; at least one transmitter; and at least one processor coupled to the at least one non-transitory computer-readable medium, the at least one receiver and the at least one transmitter.
  • the computer executable instructions are programmed to implement a method according to some embodiments of the present application with the at least one receiver, the at least one transmitter and the at least one processor.
  • embodiments of the present application provide a novel method and apparatus for timing determination in a wireless communication system, especially for timing scenarios considering timing shift impact from the same hop or neighbor hop (s) , which will further facilitate the deployment of the NR.
  • FIG. 1 illustrates a schematic view of a wireless communication system employing an IAB architecture according to some embodiments of the present application.
  • FIG. 2 illustrates a schematic view of an exemplary multi-hop route in an IAB architecture according to some embodiments of the present application.
  • FIG. 3 illustrates a schematic view of timing of links between two nodes under the advanced timing scheme according to some embodiments of the present application.
  • FIG. 4 illustrates a schematic view of timing of links between two nodes under the delayed timing scheme according to some embodiments of the present application.
  • FIG. 5 illustrates a schematic view of OTA synchronization for a child DL of a node based on the timing shift on a parent DL of the node under the advanced timing scheme according to some embodiments of the present application.
  • FIG. 6 illustrates a schematic view of OTA synchronization for a child DL of a node based on the timing shift on a parent DL of the node under the delayed timing scheme according to some embodiments of the present application.
  • FIG. 7 illustrates a schematic view of UL transmission timing on a parent UL of a node based on the timing shift on a child DL of the node under the advanced timing scheme according to some embodiments of the present application.
  • FIG. 8 illustrates a schematic view of UL transmission timing on a parent UL of a node based on the timing shift on a child DL of the node under the delayed timing scheme according to some embodiments of the present application.
  • FIG. 9 illustrates a schematic view of UL transmission timing on a child UL of a node based on the timing shift on a parent DL of the node under the advanced timing scheme according to some embodiments of the present application.
  • FIG. 10 illustrates a schematic view of UL transmission timing on a child UL of a node based on the timing shift on a parent DL of the node under the delayed timing scheme according to some embodiments of the present application.
  • FIG. 11 illustrates a block diagram of an apparatus for timing determination according to some embodiments of the present application.
  • Relaying function enables an operator to improve and extend the coverage of a base station (BS) by having a relay node (RN) wirelessly connected to a BS.
  • An IAB architecture evolved from an earlier relay technology.
  • an IAB architecture supporting multi-hop relays and multi-connectivity has been envisioned for NR, for example 5G communication networks, wherein single-hop should be considered as a special case of multi-hop, and single-connectivity should be considered as a special case of multi-connectivity.
  • FIG. 1 illustrates a schematic view of a wireless communication system 100 employing an IAB architecture according to some embodiments of the present application.
  • the wireless communication system 100 employing IAB architecture includes a plurality of nodes, e.g. at least one BS 10, two IAB nodes 20, including a first IAB node 20a and a second IAB node 20b, and a plurality of UEs 30, including a first UE 30a and a second UE 30b.
  • the wireless communication system 100 is shown for illustrating the principle of the present application in a clear and concise manner. Although only one BS 10, two IAB nodes 20 and two UEs 30 are shown for simplicity, the wireless communication system 100 may further include more BSs 10, IAB nodes 20, and UEs 30.
  • Persons skilled in the art is aware that in a real communication system there can be more nodes and corresponding routes among them and can clearly determine their relationship and how they operate based on the disclosure and teaching of the embodiments of the present application.
  • the BS 10 operates under the control of a mobility management entity (MME) 40 in a core network (CN) 50.
  • MME mobility management entity
  • CN core network
  • the BS 10 may be based on and support, for example, a long-term evolution (LTE) , LTE-Advanced (LTE-A) , NR, or other suitable standards.
  • LTE long-term evolution
  • LTE-A LTE-Advanced
  • NR NR
  • the BS 10 may be an eNB (evolved Node Base) or a gNB and may define one or more cells 11.
  • the BS 10 is the donor BS for the IAB nodes 20, and can be also refer to as a "donor, " "IAB donor” or "donor node. "
  • Each IAB node 20 may include a distribution unit (DU) (not shown) and a mobile termination (MT) unit (not shown) . Accordingly, each IAB nodes 20 may be connected to a parent IAB node or a BS 10 via the MT unit and may be connected to UEs 30 or a child IAB node (s) via the DU.
  • the UEs 30 may represent a computing device, a wearable device, or a mobile device, etc.
  • the donor node 10 may act as a serving IAB node, i.e. a parent IAB node, and include a DU (not shown) to support UEs 30 and MT units of the IAB nodes 20.
  • the donor node 10 may further include a centralized unit (CU) (not shown) for the DUs of all IAB nodes 20 and for its own DU.
  • the CU may support at least RLC layer
  • the DU may support at least medium access control (MAC) layer and physical layer for all the IAB nodes 20, e.g. those defined in TS 38.300 and TS 38.331, etc.
  • MAC medium access control
  • the second UE 30b and the first IAB node 20a may communicate with the donor node 10 through an access link (AL) and a backhaul link (BL) , respectively.
  • the second IAB node 20b may communicated with the donor node 10 via a parent node (also called "a serving node” ) , i.e., the first IAB node 20a.
  • the first UE 30a may communicate with the second IAB node 20b through an RN-ACCESS LINK (AL1) and then reach the donor node 10 via the first IAB node 20a. That is, the first UE 30a communicates with the donor node 10 via a multi-hop route.
  • the first IAB node 20a is a parent node of the second IAB node 20b
  • the second IAB node 20b is a parent node of the first UE 30a.
  • the second IAB node 20b is a child node of the first IAB node 20a
  • the first UE 30a is a child node of the second IAB node 20b.
  • FIG. 1 shows that the donor node 10 and the IAB nodes 20 are respectively connected to a single UE 30, both the donor node 10 and IABs 20 are capable of providing connections to multiple UEs 30.
  • at least one of the IAB nodes 20 and UEs 30 may have multiple active routes to the BS 10, i.e., multi-connectivity rather than single-connectivity.
  • An "active route" of a node means this node is allowed to transmit or receive data in this route, and contains multiple links in a multi-hop IAB system.
  • a link within a multi-hop route may be an access link (AL) or backhaul link.
  • a link between a node and its parent node can be called "a parent link, " while a link between a node and its child node can be called "a child link.
  • the parent link is a parent backhaul link, while the child link is a child backhaul link or an access link.
  • Bi-directional transmission or reception can be performed in each link, for example, an UL transmission with respect to a parent node, an UL reception with respect to a child node, a DL transmission with respect to a child node, and a DL reception with respect to a parent node.
  • simultaneous DL transmission on neighbor links may be required.
  • DL transmission on a parent DL of the first IAB node 20a and DL transmission on a child backhaul DL of the first IAB node 20a are simultaneous.
  • the DL transmission timing on the parent link of a node may be advanced (hereafter “the advanced timing scheme” ) or the DL transmission timing on the child link of the node may be delayed (hereafter “the delayed timing scheme” ) .
  • the DL transmission timing where DL transmission timing of at least part nodes are supposed to be aligned is referred to as “the aligned DL transmission timing, " and the timing scheme applying the aligned DL transmission timing is referred to as "the aligned timing scheme, " e.g., Case 1 timing scheme etc.
  • the shift of DL transmission timing on a hop may affect other timing on the same hop, e.g., DL reception timing and UL transmission timing etc., and may also affect other timing in the neighbor hop (s) , e.g., the over the air (OTA) synchronization on the child hop, the UL transmission timing on the parent hop for simultaneous transmission, and the UL reception timing on the child hop for simultaneous reception etc.
  • s neighbor hop
  • OTA over the air
  • timing shift in an IAB architecture e.g., the DL transmission timing shift
  • embodiments of the present application provide a technical solution on how to determine timing, especially in the wireless network employing an IAB architecture.
  • the exemplary embodiments are illustrated mainly considering timing impact caused by simultaneous DL transmission among neighbor links, persons skilled in the art should well know that the timing scheme disclosed in the present application can be independently applied to various IAB architecture scenarios as required.
  • a first node of the two nodes is the parent node of a second node of the two nodes.
  • the first node and the second node are two IAB nodes, or the first node is a donor node and the second node is an IAB node, or the first node is an IAB node and the second node is a UE.
  • the parent node of the first node will determine at least one of the DL transmission timing, DL reception timing, and UL transmission timing between the first node and the second node, and will transmit at least one signaling for timing determination to the first node so that the first node can determine the corresponding timing.
  • the first node will determine at least one of the DL transmission timing, DL reception timing, and UL transmission timing between the first node and the second node, and will transmit at least one signaling for timing determination to the second node so that the second node can determine the corresponding timing.
  • the parent node of the first node will transmit to the first node or the first node will transmit to the second node at least one signaling for determining at least one of: the DL transmission timing, the DL reception timing, and the UL transmission timing between the first node and the second node in the case that timing shift will happen at least on the same hop or neighbor hop (s) .
  • the DL transmission timing between the first node and the second node is to be shifted compared to a DL transmission timing where DL transmission timing of the first node and the second node are supposed to be aligned.
  • the at least one signaling for timing determination will indicate whether to shift the related timing, when to shift the related timing, and/or how to shift the related timing etc.
  • the at least one signaling may be carried by at least one high layer signaling, e.g., DL control information (DCI) , media access control control element (MAC CE) , radio resource control (RRC) or signaling on backhaul adaptation protocol (BAP) layer etc.
  • DCI DL control information
  • MAC CE media access control control element
  • RRC radio resource control
  • BAP backhaul adaptation protocol
  • On or more single signaling may be used for determining timing for transmission or reception on a single link between the first node and the second node, e.g., for the UL transmission timing, or for the DL transmission timing, or for the DL reception timing, that is, different timing is determined based on different signaling.
  • a single signaling may be used for determining timing for more than one link between the first node and the second node, e.g., simultaneously for the UL transmission timing, the DL transmission timing and the DL reception timing between the first node and the second node.
  • the at least one signaling is indicated by at least one multiplexing mode of the following: a multiplexing mode of the parent node of the first node and a grandfather node of the first node from the first node, a multiplexing mode of the parent node of the first node and the first node, a multiplexing mode of the second node and first node, and a multiplexing mode of the second node and the child node of the second node.
  • a multiplexing mode means simultaneous transmission on a parent uplink and a child downlink of a node, simultaneous reception on a parent downlink and a child uplink of a node, simultaneous UL transmission on a parent uplink and UL reception on a child uplink of a node, and simultaneous DL reception on a parent downlink and DL transmission on a child downlink of a node.
  • a signaling to the second IAB node 20b from the first IAB node 20a as shown in FIG. 1 can be an exemplary multiplexing mode on the upper two hops of the second IAB node 20b, e.g. the link between the BS 10 and the first IAB node 20a and the link between the first IAB node 20a and the second IAB node 20b.
  • a signaling for timing determination is indicated by at least one of: a time-frequency resource, a time-frequency resource set, a spatial domain filter, and power of at least one of transmission (s) and reception (s) .
  • the at least one transmission may be: UL transmission, UL reception, DL transmission and DL reception between the first node and the second node; UL transmission, UL reception, DL transmission and DL reception between the second node and the child node of the second node; UL transmission, UL reception, DL transmission and DL reception between the parent node of the first node and the first node; and UL transmission, UL reception, DL transmission and DL reception between the grandparent node of the first node and the parent node of the first node.
  • a signaling for timing determination is indicated by the power of DL transmission and DL reception between the first node and the second node, or is indicated by the power of UL transmission or UL reception between the first node of the second node, or is indicated by the power of DL reception, DL transmission, UL transmission, or UL reception between the parent node of the first node and the first node, or is indicated by the power of DL reception, DL transmission, UL transmission, or UL reception between the grandparent node of the first node and the parent node of the first node etc.
  • a signaling for timing determination is at least one time domain resource associated with at least one of the UL transmission timing, DL transmission timing and DL reception timing between the first node and the second node.
  • FIG. 2 illustrates a schematic view of an exemplary multi-hop route in an IAB architecture according to some embodiments of the present application.
  • IAB#0 is the parent node of IAB#1
  • IAB#1 is the parent node of IAB#2
  • IAB#3 is the parent node of IAB#4.
  • IAB#0 may be replaced by a donor node, e.g., BS 10 as illustrated and shown in FIG. 1 in some embodiments of the present application.
  • IAB#4 may be replaced by a UE, e.g., the UE 30 as illustrated and shown in FIG. 1 in some embodiments of the present application.
  • Link#1 is a DL between IAB#1 and IAB#2
  • Link#2 is a UL between IAB#1 and IAB#2
  • Link#3 is a DL between IAB#2 and IAB#3
  • Link#4 is a UL between IAB#2 and IAB#3
  • Link#5 is a DL between IAB#3 and IAB#4
  • Link#6 is a UL between IAB#3 and IAB#4
  • Link#7 is a DL between IAB#0 and IAB#1
  • Link#8 is a UL between IAB#0 and IAB#1.
  • Pd_0 is the propagation delay on a link between IAB#0 and IAB#1, e.g., the propagation delay on Link#7 or Link#8.
  • Pd_1 is the propagation delay on a link between IAB#1 and IAB#2, e.g., the propagation delay on Link#1 or Link#2.
  • Pd_2 is the propagation delay on a link between IAB#2 and IAB#3, e.g., the propagation delay on Link#3 or Link#4.
  • Pd_3 is the propagation delay on a link between IAB#3 and IAB#4 e.g., the propagation delay on Link#5 or Link#6.
  • the propagation delay of a link between a node and the child node of the node can be determined by T_delta and timing advance (TA) of the link, wherein T_delta is corresponding to the time domain difference between UL Rx and DL Tx at the node, and T_delta is transmitted from the node to its child node, and TA is a TA value for determining the UL transmission timing between two nodes with respect to the DL reception timing between the two nodes.
  • T_delta timing advance
  • Pd_1 is determined by T_delta_1 and TA_1, wherein T_delta_1 is corresponding to the time domain difference between UL Rx and DL Tx at IAB#1 and is transmitted by IAB#1 to IAB#2, TA_1 is a TA value for determining the UL transmission timing between IAB#1 and IAB#2 with respect to the DL reception timing between IAB#1 and IAB#2.
  • Pd_2 is determined by T_delta_2 and TA_2, wherein T_delta_2 is corresponding to the time domain difference between UL Rx and DL Tx at IAB#2 and is transmitted by IAB#2 to IAB#3, TA_2 is a TA value for determining the UL transmission timing between IAB#2 and IAB#3 with respect to the DL reception timing between IAB#2 and IAB#3.
  • Scenario 1 DL transmission timing shift and impact on DL reception timing and UL transmission timing on the same hop
  • At least one signaling from a parent node (the parent node of the first node with respect to the first node, or the first node with respect to the second node) will indicate that the DL transmission timing between the first node and the second node is to be advanced with respect to the aligned DL transmission timing by a first value, or is to be delayed with respect to the aligned DL transmission timing by a second value.
  • the first value is determined based on the propagation delay between the first node and the second node or is configured by a signaling.
  • the second value is determined based on the propagation delay between the parent node of the first node and the first node or is configured by a signaling.
  • the signaling for determining DL transmission timing between two nodes may be applied in the following manners: a parent node of one node of the two nodes indicates to its child node on whether the DL transmission timing of the parent node’s child link (or the parent link of the node) is advanced or delayed or aligned.
  • a signaling for timing determination from IAB#0 may indicate IAB#1 whether and when to shift DL transmission timing in parent DL or child DL.
  • a signaling for timing determination may indicate IAB#1 that the DL transmission timing on Link#7 will be advanced by a first value compared to the aligned DL transmission timing, or indicate IAB#1 that the DL transmission timing on Link#1 will be delayed by a second value compared to the aligned DL transmission timing.
  • a signaling for timing determination from IAB#1 may indicate IAB#2 that the DL transmission timing on Link#1 will be advanced by a first value compared to the aligned DL transmission timing, or indicate IAB#2 that the DL transmission timing on Link#3 will be delayed by a second value compared to the aligned DL transmission timing.
  • Link#1 between IAB#1 (the first node) and IAB#2 (the second node)
  • Link#1 is the child link of simultaneous DL
  • the DL timing of Link#1 can be delayed compared to the aligned DL transmission timing.
  • Link#1 is the parent link of simultaneous DL
  • the DL timing of Link#1 can be advanced compared to the aligned DL transmission timing. That is, for a specific hop, specific timing determination of DL and UL on the specific hop is related to a specific scenario, and timing determination of DL and UL on the specific hop is variable in different scenarios.
  • the exemplary embodiments of the present application are illustrated in view of timing shift in different links for clearness, persons skilled in the art should well know how to determine the timing of DL and UL on a single hop in different scenarios.
  • the shift of DL transmission timing of DL on a hop may also impact other timing in the same hop, e.g., DL reception timing on Link#1, UL transmission timing on Link#2. Since the UL transmission is received on the parent node, the UL reception timing is determined by the parent node itself and does not need to be indicated to the child node.
  • the DL reception timing between the first node and the second node is also advanced with respect to a DL reception timing determined based on the aligned DL transmission timing by the first value, or is delayed with respect to the DL reception timing in the aligned timing scheme by the second value.
  • the signaling for determining DL reception timing between two nodes may be applied in the following manner: a parent node of one node of the two nodes indicates to the node (e.g., MT of the node) or serving UE on whether the DL reception timing is advanced or delayed or aligned.
  • the UL transmission timing on the same hop it is determined by DL reception timing and a TA value with respect to the DL reception timing in legacy 3GPP release.
  • UL transmission timing may also be shifted.
  • the UL transmission timing between the first node and the second node is delayed with respect to a UL transmission timing determined based on the aligned DL transmission timing by the first value, or is advanced with respect to the UL transmission timing by the second value.
  • the UL transmission timing may keep the same as that determined under the aligned DL transmission timing. Accordingly, at least one signaling may indicate whether the UL transmission timing will also be shifted.
  • the first value e.g., the propagation delay between the first and second nodes will be used to determine the UL transmission timing between the first node and second node based on the following formula:
  • T_UL_Tx T_DL reception –TA + V1 formula (1)
  • T_UL_Tx is the UL transmission timing between the first node and second node
  • T_DL reception is the DL reception timing between the first node and second node
  • TA is a TA value of the UL reception timing between the first node and second node with respect to the DL reception timing between the first node and second node
  • V1 is the first value.
  • the propagation delay between the first and second nodes can be determined by (TA-T_delta) /2, wherein T_delta is the time domain difference between UL Rx and DL Tx at the first node, and is indicated to the second node by the first node via high layer signaling.
  • the second value e.g., the propagation delay on the parent link of the UL reception node
  • T_UL _Tx T_DL reception –TA –V2 formula (2)
  • T_UL_Tx is the UL transmission timing between the first node and second node
  • T_DL reception is the DL reception timing between the first node and second node
  • TA is a TA value of the UL reception timing between the first node and second node with respect to the DL reception timing between the first node and second node
  • V2 is the second value, e.g., the propagation delay on the parent link of the UL reception node.
  • a node may indicate its child node (e.g., the MT of the child node) or serving UE on how to determine UL transmission timing in one of the following manners:
  • the propagation delay of the corresponding link will be used to delay the UL transmission timing
  • the propagation delay of the parent link of the UL reception node (or UL receiver) will be used to advance the UL transmission timing.
  • FIGS. 3 and 4 exemplary diagrams of timing of links between two nodes under the advanced timing scheme and delayed timing scheme are respectively shown in FIGS. 3 and 4.
  • FIG. 3 illustrates a schematic view of timing of Link#1 between IAB#1 and IAB#2 under the advanced timing scheme according to some embodiments of the present application
  • FIG. 4 illustrates a schematic view of timing of Link#3 between IAB#2 and IAB#3 under the delayed timing scheme according to some embodiments of the present application.
  • an aligned timing scheme e.g., Case 1 timing scheme is also shown, wherein the aligned DL transmission timing is a boundary of DL transmission timing under Case 1 timing scheme.
  • the timing of DL transmission on Link#1 between IAB#1 and IAB#2 is aligned to the boundary of DL transmission timing.
  • the timing of DL reception on Link#1 is delayed by Pd_1 compared to the boundary of DL transmission timing.
  • the timing of UL transmission on Link#2 is advanced by a TA value, e.g., TA_1 compared to the timing of the DL reception timing.
  • the timing of UL reception on Link#1 is delayed by Pd_1 compared to the timing of UL transmission timing.
  • the timing of UL reception of Link#1 is also advanced by T_delta_1 compared to the boundary of DL transmission timing.
  • DL transmission timing T_1 on Link#1 is advanced by a first value, wherein the first value is determined based on the propagation delay of the current link, e.g., Pd_1 of Link#1 between IAB#1 and IAB#2, or is configured by the a signaling.
  • the DL reception timing T_2 on Link#1 may also be advanced with respect to the DL reception timing under the aligned timing scheme by the first value, e.g., Pd_1. If the same TA value as that in the aligned timing scheme is used, the UL transmission timing T_4 on Link#2 may be advanced with respect to the UL transmission timing under the aligned timing scheme by the first value.
  • the UL reception timing T_3 on Link#2 may be advanced with respect to the UL reception timing under the aligned timing scheme by the first value. To avoid the impact of UL transmission to previous or latter slot (s) , it is preferred that the UL Tx timing is the same as that the aligned timing scheme, so the UL Tx timing will be delayed further by the first value.
  • the timing of DL transmission on Link#3 between IAB#2 and IAB#3 is aligned to the boundary of DL transmission timing.
  • the timing of DL reception on Link#3 is delayed by Pd_2 compared to the boundary of DL transmission timing.
  • the timing of UL transmission on Link#4 is advanced by a TA value, e.g., TA_2 compared to the timing of the DL reception timing.
  • the timing of UL reception on Link#4 is delayed by Pd_2, and it is also advanced by T_delta_2 compared to the boundary of DL transmission timing.
  • DL transmission timing on Link#3 is delayed by a second value, wherein the second value is determined based on the propagation delay of the parent link of IAB#2, e.g., Pd_1 of Link#1 between IAB#1 and IAB#2, or is configured by the a signaling.
  • the DL reception timing on Link#3 may also be delayed with respect to the DL reception timing under the aligned timing scheme by the second value.
  • the UL transmission timing on Link#4 may be delayed with respect to the UL transmission timing under the aligned timing scheme by the second value.
  • the UL reception timing on Link#4 may be delayed with respect to the UL reception timing under the aligned timing scheme by the second value.
  • it is preferred that the UL Tx timing is the same as that in the aligned timing scheme, so the UL Tx timing will be advanced further by the second value.
  • Scenario 2 Impact on OTA synchronization of a child hop
  • the DL transmission timing between the parent node of the first node and the first node is advanced, the DL transmission timing between the first node and the second node is to be the same as the DL reception timing between the parent node of the first node and the first node.
  • the DL transmission timing between the parent node of the first node and the first node is delayed, the DL transmission timing between the first node and the second node will be advanced with respect to the DL reception timing on the first node’s parent link, and the value is determined based on a propagation delay between a grandparent node of the first node and the parent node of the first node or is configured by a signaling.
  • the propagation delay between a grandparent node of the first node and the parent node of the first node needs to be indicated to the second node by the first node.
  • a parent node of a node may indicate the node (e.g., the MT of the child node) or serving UE on how to determine UL transmission timing in one of the following manners:
  • DL transmission timing for the node is determined based on the DL reception timing on its parent link
  • DL transmission timing for the node’s child node is determined based on DL reception timing of its parent link, T_delta of its parent link, and the propagation delay between the parent node of the node and the grandparent node of the node.
  • FIGS. 5 and 6 exemplary diagrams of OTA synchronization for a child DL of a node based on the timing shift on a parent DL of the node under the advanced timing scheme and delayed timing scheme are respectively shown in FIGS. 5 and 6.
  • FIG. 5 illustrates a schematic view of OTA synchronization for Link#3 based on the advanced DL transmission timing on Link#1 between IAB#1 and IAB#2 according to some embodiments of the present application
  • FIG. 6 illustrates a schematic view of OTA synchronization for Link#5 based on delayed DL transmission timing on Link#3 between IAB#2 and IAB#3 according to some embodiments of the present application.
  • the DL transmission timing and DL reception timing on Link#1, and UL transmission timing and UL reception on Link#2 under the advanced timing scheme shown in FIG. 5 are as the same as those shown in FIG. 3.
  • the DL transmission timing and DL reception timing on Link#3, and UL transmission timing and UL reception on Link#4 under the delayed timing scheme shown in FIG. 6 are as the same as those shown in FIG. 4. Those will not be repeated.
  • OTA synchronization for the child DL of a node, e.g., Link#3 of IAB#2 is based on the DL reception timing e.g., T_DLRx on the parent DL of the node, e.g., Link#1 of IAB#2, T_delta and the TA value of the UL transmission timing compared to the DL reception timing of Link#1.
  • T_delta and the TA value can be transmitted from the parent node of the node, e.g., from IAB#1 to IAB#2.
  • the DL transmission timing T_DLTx on a child link, e.g., Link#3 can be calculated as:
  • T_DLTx T_DLRx –TA_1 + (TA_1 –T_delta_1) /2 + T_delta_1 formula (3)
  • the DL transmission timing of Link#3 e.g., T_DLTx_CLA can be set based on the following formula:
  • T_DLTx_CLA T_DLRx –TA_1 + (TA_1 –T_delta_1) /2 + T_delta_1 + V4
  • V4 is a value to be shifted with respect to the aligned DL transmission timing.
  • T_DLTx_A T_DLRx_A, wherein T_DLRx_Ais the DL reception timing of Link#1, and thus DL transmission timing of Link#3 is to be the same as the DL reception timing of Link#1 as shown in FIG. 5.
  • the DL transmission timing on the child DL of the node's child node e.g., Link#5 of IAB#3
  • the DL transmission timing on the child DL of the node's child node e.g., Link#5 of IAB#3
  • T_DLTx_CLD T_DLRx_L –TA + (TA –T_delta) /2+T_delta –V5
  • T_DLTx_CLD is the DL transmission timing on the child DL of the node's child node, e.g., the DL transmission timing of Link#5;
  • T_DLRx_L is the DL reception timing of the child DL of the node, e.g., the DL reception of IAB#3,
  • TA is the TA value of the UL TX timing of the child UL of the node, e.g., TA_2 for UL transmission of Link#4;
  • T_delta is the time domain difference between DL Tx and UL Rx at IAB#2, e.g., Tdelta_2;
  • V5 is a value to be shifted with respect to the aligned DL transmission timing, which may be the propagation delay between a grandparent node of node and parent node of the node, e.g., Pd_1 between IAB#1 and IAB#2. Pd_1 will be indicated from IAB#2 to IAB#
  • Scenario 3 Impact on UL transmission timing of a parent hop for simultaneous transmission
  • the UL transmission timing between the first node and the second node is advanced with respect to the aligned DL transmission timing by a value, and the value is determined based on propagation delay between the second node and the child node of the second node.
  • the UL transmission timing between the first node and the second node is delayed with respect to the aligned DL transmission timing by a value DL transmission, and the value is determined based on a propagation delay between the first node and the second node.
  • the propagation delay between the second node and the child node of the second node will be reported by the second node to the first node for common understanding between the parent node and the child node.
  • FIGS. 7 and 8 exemplary diagrams of UL transmission timing on a parent UL of a node under the advanced timing scheme and delayed timing scheme are respectively shown in FIGS. 7 and 8.
  • FIG. 7 illustrates a schematic view of the UL transmission timing on Link#8 based on the advanced DL transmission timing on Link#1 between IAB#1 and IAB#2 according to some embodiments of the present application
  • FIG. 8 illustrates a schematic view of the UL transmission timing on Link#2 based on delayed DL transmission timing on Link#3 between IAB#2 and IAB#3 according to some embodiments of the present application.
  • the DL transmission timing and DL reception timing on Link#1 under the advanced timing scheme shown in FIG. 7 is as the same as those shown in FIG. 3.
  • the DL transmission timing and DL reception timing on Link#3 under the delayed timing scheme shown in FIG. 8 is as the same as those shown in FIG. 4. Those will not be repeated.
  • the UL transmission timing, T_ULTX_PLA of the parent UL of the first node, e.g., Link#8 of IAB#1 may be set as the following:
  • T_ULTX_PLA T_DLTX_R -V6 formula (6)
  • T_DLTX_R is the aligned DL transmission timing of the parent node of the first node, e.g., IAB#0.
  • V6 is a value to be shift with respect to the aligned DL transmission timing, which may be the propagation delay of the child link of the parent node, e.g., Link#1 of IAB#0, which will be reported to IAB#1 by IAB#2.
  • the UL transmission timing, T_ULTX_PLD of the parent UL of the first node, e.g., Link#2 of IAB#2 may be set as the following:
  • T_ULTX_PLD T_DLTX_R+ V7 formula (7)
  • T_DLTX_R is the aligned DL transmission timing.
  • V7 is a value to be shift with respect to the aligned DL transmission timing, which may be the propagation delay on the parent link of the first node, e.g., Pd_1 on Link#1 or Link#2.
  • a node may indicate its child node (e.g., the MT of the child node) or serving UE on how to determine UL transmission timing on the parent UL of the child node in one of the following manners:
  • the UL transmission timing of the child node’s parent link is advanced by the propagation delay of the child link with respect to the DL transmission timing supposed to be aligned; and signaling indication on that reporting from child node to its parent node on the propagation delay of the child node’s child link is necessary;
  • the UL transmission timing of the child node’s parent link is delayed by the propagation delay of the child node’s parent link with respect to the DL transmission timing supposed to be aligned.
  • Scenario 4 Impact on UL transmission timing of a child hop for simultaneous reception
  • the UL transmission timing between the first node and the second node is advanced with respect to the aligned DL transmission timing by a value, and the value is determined based on the propagation delay between the first node and the second node.
  • the UL transmission timing between the first node and the second node is delayed based on at least one of: a propagation delay between the parent node of the first node and a grandfather node of the first node, a propagation delay between the first node and the parent node of the first node, and the propagation delay between the first node and the second node.
  • the propagation delay between the parent node of the first node and a grandfather node of the first node will be transmitted from the first node to the second node.
  • FIGS. 9 and 10 exemplary diagrams of UL transmission timing on a child UL of a node based on the timing shift on a parent UL of the node under the advanced timing scheme and delayed timing are respectively shown in FIGS. 9 and 10.
  • FIG. 9 illustrates a schematic view of the UL transmission timing on Link#4 based on timing shift on Link#1 between IAB#1 and IAB#2 under the advanced timing scheme according to some embodiments of the present application
  • FIG. 10 illustrates a schematic view of the UL transmission timing on Link#6 based on the timing shift on Link#3 between IAB#2 and IAB#3 under the delayed timing scheme according to some embodiments of the present application.
  • the DL transmission timing and DL reception timing on Link#1 under the advanced timing scheme shown in FIG. 9 is as the same as those shown in FIG. 3.
  • the DL transmission timing and DL reception timing on Link#3 under the delayed timing scheme shown in FIG. 10 is as the same as those shown in FIG. 4. Those will not be repeated.
  • the UL transmission timing, T_ULTX_CLA of the child UL of the second node, e.g., Link#4 of IAB#2 may be set as the following:
  • T_ULTX_CLA T_DLTX_R –V8 formula (8)
  • T_DLTX_R is the aligned DL transmission timing.
  • V8 is a value to be shift with respect to the aligned DL transmission timing, which may be the propagation delay of the current link of the UL transmission.
  • Both T_DLTX_R and the propagation delay of the current link of the UL transmission can be determined by existing DL reception timing, T_delta and TA of the current link.
  • the UL transmission timing, T_ULTX_CLD of the child UL of the second node, e.g., Link#6 of IAB#6, may be set as the following:
  • T_ULTX_CLD T_DLTx_A+ V9 formula (9)
  • T_DLTX_A is the aligned DL transmission timing.
  • V9 is a value to be shift with respect to the aligned DL transmission timing, which may be determined based on be at least one of: a propagation delay between the parent node of the first node and a grandfather node of the first node, a propagation delay between the first node and the parent node of the first node, and the propagation delay between the first node and the second node.
  • a node may indicate its child node (e.g., the MT of the child node) or serving UE on how to determine UL transmission timing on the child UL of the child node for simultaneous reception in one of the following manners:
  • the UL transmission timing for its child link is advanced by the propagation delay of the current link with respect to the aligned DL transmission timing
  • the UL transmission timing for its child link is determined based on the propagation between the child node and its child node, the child node and its parent node, the child node’s parent node and the child node’s grandparent node; and signaling indication from the child node to its child node on the propagation delay between the child node’s parent node and the child node’s grandparent node is necessary.
  • FIG. 11 illustrates a block diagram of an apparatus 1100 for timing determination according to some embodiments of the present application.
  • the apparatus 1100 may include at least one non-transitory computer-readable medium 1101, at least one receiving circuitry 1102, at least one transmitting circuitry 1104, and at least one processor 1106 coupled to the non-transitory computer-readable medium 1101, the receiving circuitry 1102 and the transmitting circuitry 1104.
  • the apparatus 1100 may be a parent node, e.g., a BS, a parent IAB node (e.g., DU of a node) and the like, or a child node, e.g., a child IAB node (e.g., MT of a node) or serving UE configured to perform a method illustrated in embodiments of the present application.
  • the at least one processor 1106, transmitting circuitry 1104, and receiving circuitry 1102 are described in the singular, the plural is contemplated unless a limitation to the singular is explicitly stated.
  • the receiving circuitry 1102 and the transmitting circuitry 1104 can be combined into a single device, such as a transceiver.
  • the apparatus 1100 may further include an input device, a memory, and/or other components.
  • the non-transitory computer-readable medium 1101 may have stored thereon computer-executable instructions to cause a processor to implement the method with respect to the child node as described above.
  • the computer-executable instructions when executed, cause the processor 1106 interacting with receiving circuitry 1102 and transmitting circuitry 1104, so as to perform the steps with respect to the child node.
  • the non-transitory computer-readable medium 1101 may have stored thereon computer-executable instructions to cause a processor to implement the method with respect to the parent node as described above.
  • the computer-executable instructions when executed, cause the processor 1106 interacting with receiving circuitry 1102 and transmitting circuitry 1104, so as to perform the steps with respect to the parent node.
  • the method according to embodiments of the present application can also be implemented on a programmed processor.
  • the controllers, flowcharts, and modules may also be implemented on a general purpose or special purpose computer, a programmed microprocessor or microcontroller and peripheral integrated circuit elements, an integrated circuit, a hardware electronic or logic circuit such as a discrete element circuit, a programmable logic device, or the like.
  • any device on which resides a finite state machine capable of implementing the flowcharts shown in the figures may be used to implement the processor functions of this application.
  • an embodiment of the present application provides an apparatus including a processor and a memory. Computer programmable instructions for implementing a method stored in the memory, and the processor is configured to perform the computer programmable instructions to implement the method.
  • the method may be a method as stated above or other method according to an embodiment of the present application.
  • An alternative embodiment preferably implements the methods according to embodiments of the present application in a non-transitory, computer-readable storage medium storing computer programmable instructions.
  • the instructions are preferably executed by computer-executable components preferably integrated with a network security system.
  • the non-transitory, computer-readable storage medium may be stored on any suitable computer readable media such as RAMs, ROMs, flash memory, EEPROMs, optical storage devices (CD or DVD) , hard drives, floppy drives, or any suitable device.
  • the computer-executable component is preferably a processor but the instructions may alternatively or additionally be executed by any suitable dedicated hardware device.
  • an embodiment of the present application provides a non-transitory, computer-readable storage medium having computer programmable instructions stored therein.
  • the computer programmable instructions are configured to implement a method as stated above or other method according to an embodiment of the present application.

Landscapes

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

Abstract

Un procédé de détermination de synchronisation selon l'invention comprend les étapes consistant à : recevoir au moins une signalisation pour déterminer au moins l'un parmi : une synchronisation d'émission en liaison montante, une synchronisation d'émission en liaison descendante et une synchronisation de réception en liaison descendante entre un premier nœud (20a) et un second nœud (20b), le second nœud (20b) est un nœud enfant du premier nœud (20a), dans le cas d'au moins l'une des situations suivantes : la synchronisation d'émission en liaison descendante entre le premier nœud (20a) et le second nœud (20b), une synchronisation d'émission en liaison descendante entre un nœud parent du premier nœud (20a) et le premier nœud (20a), et une synchronisation d'émission en liaison descendante entre le second nœud (20b) et un nœud enfant du second nœud (20b) doit être décalée par rapport à une première synchronisation d'émission en liaison descendante où la synchronisation d'émission en liaison descendante du premier nœud (20a) et du second nœud (20b) sont supposées être alignées; et déterminer la synchronisation correspondante sur la base de ladite signalisation.
PCT/CN2021/111808 2021-08-10 2021-08-10 Procédé et appareil de détermination de synchronisation WO2023015447A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/111808 WO2023015447A1 (fr) 2021-08-10 2021-08-10 Procédé et appareil de détermination de synchronisation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/111808 WO2023015447A1 (fr) 2021-08-10 2021-08-10 Procédé et appareil de détermination de synchronisation

Publications (1)

Publication Number Publication Date
WO2023015447A1 true WO2023015447A1 (fr) 2023-02-16

Family

ID=85200365

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/111808 WO2023015447A1 (fr) 2021-08-10 2021-08-10 Procédé et appareil de détermination de synchronisation

Country Status (1)

Country Link
WO (1) WO2023015447A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7599341B2 (en) * 2006-02-28 2009-10-06 Motorola, Inc. System and method for managing communication routing within a wireless multi-hop network
CN104620636A (zh) * 2012-09-10 2015-05-13 高通股份有限公司 多跳无线网状网络中的桥接学习
CN110113122A (zh) * 2018-02-01 2019-08-09 华为技术有限公司 一种定时的方法及装置
CN110536407A (zh) * 2018-09-28 2019-12-03 中兴通讯股份有限公司 发送定时的确定方法及设备、计算机可读存储介质
CN111107620A (zh) * 2018-10-25 2020-05-05 中兴通讯股份有限公司 基准定时的确定方法及装置、存储介质和电子装置
CN112512078A (zh) * 2020-10-15 2021-03-16 中兴通讯股份有限公司 定时确定方法、装置、电子设备和存储介质
CN112839376A (zh) * 2021-01-04 2021-05-25 中兴通讯股份有限公司 定时确定方法、装置、通信节点及存储介质

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7599341B2 (en) * 2006-02-28 2009-10-06 Motorola, Inc. System and method for managing communication routing within a wireless multi-hop network
CN104620636A (zh) * 2012-09-10 2015-05-13 高通股份有限公司 多跳无线网状网络中的桥接学习
CN110113122A (zh) * 2018-02-01 2019-08-09 华为技术有限公司 一种定时的方法及装置
CN110536407A (zh) * 2018-09-28 2019-12-03 中兴通讯股份有限公司 发送定时的确定方法及设备、计算机可读存储介质
CN111107620A (zh) * 2018-10-25 2020-05-05 中兴通讯股份有限公司 基准定时的确定方法及装置、存储介质和电子装置
CN112512078A (zh) * 2020-10-15 2021-03-16 中兴通讯股份有限公司 定时确定方法、装置、电子设备和存储介质
CN112839376A (zh) * 2021-01-04 2021-05-25 中兴通讯股份有限公司 定时确定方法、装置、通信节点及存储介质

Similar Documents

Publication Publication Date Title
US10980018B2 (en) Method and device for controlling access on basis of common resource in communication system
CN110115080B (zh) 在无线通信系统中发送信号和接收信号的方法及其装置
US20190116571A1 (en) Method for determining transmission timing in v2x ue
US20220095140A1 (en) Method and apparatus for measuring and transmitting cr by user equipment in wireless communication system
KR20190051057A (ko) 무선 통신 시스템에서 자원을 선택하고 pssch를 전송하는 방법 및 장치
US9426686B2 (en) Method and apparatus for indicating downlink channel measurement and method and apparatus performing downlink channel measurement in a relaying system
US20170013095A1 (en) Guard Period Configuration for LTE HD-FDD
JP6019005B2 (ja) 無線基地局、ユーザ端末及び無線通信方法
US11025334B2 (en) Method and device for performing relay D2D communication in wireless communication system
JP6899427B2 (ja) 無線通信システムにおいて端末の測定によるリソース選択及びデータ伝送方法及び装置
JP2018512820A (ja) 無線通信システムにおいて多数のｄ２ｄ信号を送受信する方法及び装置
JP2015518667A (ja) 無線通信システムにおけるサブフレームの動的な構成
CN111431689A (zh) 装置到装置用户设备在无线通信系统中发送信号的方法和设备
KR20190071810A (ko) 무선 통신 시스템에서 오프셋을 적용한 d2d 신호 전송 방법 및 장치
JP6877559B2 (ja) 無線通信システムにおいて、サブフレームタイプに関連する送受信を行う方法及び装置
US10652911B2 (en) Method for dropping communication based on priority by wireless device supporting WAN communication and V2X communication and, the wireless device performing the method
US9673938B2 (en) Method for configuring table of network apparatus in LTE TDD system and network apparatus using the same
KR101973465B1 (ko) 이동통신 시스템에서 백홀 링크 서브프레임 구조 및 그 정보 전송 방법
US9325454B2 (en) System and method for HARQ entity configuration
CN105379377B (zh) 用于无线通信系统中的设备到设备通信的同步方法和装置
KR20150013444A (ko) 무선 접속 시스템에서 abs 구간 추정 방법 및 이를 위한 장치
WO2023015447A1 (fr) Procédé et appareil de détermination de synchronisation
CN115516915A (zh) 一种综合接入和回程节点的增强上下文转移
CN115918128A (zh) 无线通信的方法和终端设备
CN113261362B (zh) 用于时隙格式指示的方法及设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21953078

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE