WO2022198499A1 - Procédés et appareils de transmission de liaison latérale - Google Patents

Procédés et appareils de transmission de liaison latérale Download PDF

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Publication number
WO2022198499A1
WO2022198499A1 PCT/CN2021/082733 CN2021082733W WO2022198499A1 WO 2022198499 A1 WO2022198499 A1 WO 2022198499A1 CN 2021082733 W CN2021082733 W CN 2021082733W WO 2022198499 A1 WO2022198499 A1 WO 2022198499A1
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WIPO (PCT)
Prior art keywords
sidelink transmission
sidelink
resources
transmission
configuration information
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PCT/CN2021/082733
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English (en)
Inventor
Xiaodong Yu
Zhennian SUN
Haipeng Lei
Xin Guo
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Lenovo (Beijing) Limited
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Priority to PCT/CN2021/082733 priority Critical patent/WO2022198499A1/fr
Publication of WO2022198499A1 publication Critical patent/WO2022198499A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0808—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using carrier sensing, e.g. as in CSMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • Embodiments of the present application generally relate to wireless communication technologies, and especially to methods and apparatuses for sidelink (SL) transmission.
  • SL sidelink
  • Resource (s) used by a user equipment (UE) for sidelink communication may be determined based on network dynamic scheduling or based on a resource selection performed by the UE.
  • the resource selection performed by the UE may include a random resource selection, a sensing-based resource selection, or a partial sensing-based resource selection. All the above mechanisms may follow a rule of priority. For example, a transmission scheduled by a network may have a higher priority and should be performed firstly. In another example, a UE traffic with a higher priority should be transmitted firstly.
  • a transmission from a power-saving UE is based on a random resource selection or a partial sensing-based resource selection, and thus the probability of resource conflict caused by the power-saving UE is relatively higher than that caused by a vehicle UE (VUE) . Then, how to protect the transmission of the power-saving UE as well as ensure transmission opportunities of other UEs needs to be discussed.
  • Embodiments of the present application at least provide a technical solution for SL transmission, which can protect a transmission of a power-saving UE as well as ensure transmission opportunities of other UEs.
  • a method performed by a first UE may include: receiving a sidelink resource reservation indication indicating a second set of resources for a second sidelink transmission of a second UE, wherein the second set of resources at least partially overlaps a first set of resources for a first sidelink transmission of the first UE; receiving a UE type indication indicating that the second UE is a UE performing random resource selection or a power-saving UE; receiving a priority indication indicating a second transmission priority of the second sidelink transmission, wherein the second transmission priority is lower than or equal to a first transmission priority of the first sidelink transmission; and determining whether to perform a sidelink transmission avoidance based on first configuration information.
  • performing the sidelink transmission avoidance may include at least one of dropping the first sidelink transmission on the first set of resources or re-performing resource sensing and selection for the first sidelink transmission.
  • the first set of resources is determined based on a partial sensing-based resource selection by the first UE, or determined based on a sensing-based resource selection by the first UE, or indicated by downlink control information (DCI) .
  • DCI downlink control information
  • the first configuration information is predefined per resource pool; the first configuration information is pre-configured per resource pool to the first UE; or the first configuration information is configured per resource pool to the first UE via a higher layer signalling.
  • the first set of resources is indicated by DCI, and the DCI may further include a first indicator as the first configuration information.
  • the method may further include: in the case that the first indicator has a first value indicating to perform the sidelink transmission avoidance: dropping the first sidelink transmission on the first set of resources; and transmitting a second indicator to indicate performing the sidelink transmission avoidance on the first set of resources; and in the case that the first indicator has a second value indicating not to perform the sidelink transmission avoidance: performing the first sidelink transmission on the first set of resources.
  • the method may further include: transmitting a third indicator to indicate a collision on the first set of resources.
  • the method may further include: evaluating a sidelink transmission avoidance value, wherein the sidelink transmission avoidance value is defined as one of: a total number of sidelink transmission avoidances performed in a first time duration; a ratio between a total number of sidelink transmission avoidances performed in a second time duration and a total number of sidelink transmissions performed in the second time duration; a total number of sidelink transmission avoidances performed in a first number of sidelink transmissions; and a ratio between a total number of sidelink transmission avoidances performed in a second number of sidelink transmissions and the second number.
  • the first time duration, the second time duration, the first number, or the second number is: pre-defined per resource pool; pre-configured per resource pool to the first UE; configured per resource pool to the first UE via a higher layer signalling.
  • the method may further include: transmitting the sidelink transmission avoidance value based on second configuration information.
  • transmitting the sidelink transmission avoidance value based on the second configuration information may include: transmitting the sidelink transmission avoidance value periodically based on a period indicated by the second configuration information.
  • transmitting the sidelink transmission avoidance value based on the second configuration information may include: transmitting the sidelink transmission avoidance value each time a third number of sidelink transmissions have been performed, wherein the third number is indicated by the second configuration information.
  • transmitting the sidelink transmission avoidance value based on the second configuration information may include: transmitting the sidelink transmission avoidance value when the sidelink transmission avoidance value is higher than or equal to a threshold indicated by the second configuration information.
  • the second configuration information is predefined per resource pool; or the second configuration information is pre-configured per resource pool to the first UE; or the second configuration information is configured per resource pool to the first UE via a higher layer signalling.
  • the sidelink transmission avoidance value is transmitted in at least one of an uplink control channel, an uplink data channel, or a higher layer signaling.
  • the sidelink transmission avoidance value is transmitted on a resource indicated by the second configuration information.
  • a method may include: transmitting first configuration information, wherein the first configuration information indicates to a first UE whether to perform a sidelink transmission avoidance when a first set of resources for a first sidelink transmission of the first UE at least partially overlaps a second set of resources for a second sidelink transmission of a second UE which is a UE performing random resource selection or a power-saving UE and a first transmission priority of the first sidelink transmission is higher than or equal to a second transmission priority of the second sidelink transmission; and receiving a sidelink transmission avoidance value from the first UE.
  • performing the sidelink transmission avoidance may include at least one of dropping the first sidelink transmission on the first set of resources or re-performing resource sensing and selection for the first sidelink transmission.
  • the first set of resources is determined by the first UE based on a partial sensing-based resource selection, or determined by the first UE based on a sensing-based resource selection, or indicated by DCI.
  • the first configuration information is configured per resource pool and transmitted via a higher layer signalling.
  • the first set of resources for the first UE is indicated by DCI, and the DCI may further include a first indicator as the first configuration information.
  • the method may further include: in the case that the first indicator has a first value indicating to perform the sidelink transmission avoidance: receiving a second indicator to indicate performing the sidelink transmission avoidance for the first sidelink transmission on the first set of resources when the first set of resources at least partially overlaps the second set of resources and the first transmission priority is higher than or equal to the second transmission priority.
  • the method may further include: in the case that the first indicator has a second value indicating not to perform the sidelink transmission avoidance: receiving a third indicator to indicate a collision on the first set of resources when the first set of resources at least partially overlaps the second set of resources and the first transmission priority is higher than or equal to the second transmission priority.
  • the method may further include: configuring a time duration or a first number of sidelink transmissions, wherein the sidelink transmission avoidance value is defined as one of: a total number of sidelink transmission avoidances performed in the time duration; a ratio between a total number of sidelink transmission avoidances performed in the time duration and a total number of sidelink transmissions performed in the time duration; a total number of sidelink transmission avoidances performed in the first number of sidelink transmissions; and a ratio between a total number of sidelink transmission avoidances performed in the first number of sidelink transmissions and the first number.
  • the time duration or the first number is configured per resource pool to the first UE.
  • the method may further include: transmitting second configuration information; wherein the sidelink transmission avoidance value is received based on the second configuration information.
  • the sidelink transmission avoidance value is received periodically based on a period indicated by the second configuration information.
  • the sidelink transmission avoidance value is received each time a second number of sidelink transmissions have been performed by the first UE, and the second configuration information indicates the second number.
  • the sidelink transmission avoidance value is received when the sidelink transmission avoidance value is higher than or equal to a threshold indicated by the second configuration information.
  • the sidelink transmission avoidance value is received in at least one of an uplink control channel, an uplink data channel, or a higher layer signaling.
  • the sidelink transmission avoidance value is received on a resource indicated by the second configuration information.
  • Some embodiments of the present application also provide an apparatus including: at least one non-transitory computer-readable medium having computer executable instructions stored therein, at least one receiving circuitry; at least one transmitting circuitry; and at least one processor coupled to the at least one non-transitory computer-readable medium, the at least one receiving circuitry and the at least one transmitting circuitry.
  • the computer executable instructions are programmed to implement any method as stated above with the at least one receiving circuitry, the at least one transmitting circuitry and the at least one processor.
  • FIG. 1 is a schematic diagram illustrating an exemplary wireless communication system according to some embodiments of the present application
  • FIG. 2 is a flow chart illustrating an exemplary method for SL transmission according to some embodiments of the present application
  • FIG. 3 is a flow chart illustrating another exemplary method for SL transmission according to some embodiments of the present application.
  • FIG. 4 illustrates a simplified block diagram of an exemplary apparatus for SL transmission according to some embodiments of the present application.
  • FIG. 1 is a schematic diagram illustrating an exemplary wireless communication system 100 according to some embodiments of the present application.
  • the wireless communication system 100 includes at least one base station (BS) 101 and at least one UE 102.
  • the wireless communication system 100 includes one BS 101 and two UEs 102 (e.g., a UE 102a and a UE 102b) for illustrative purpose.
  • BS 101 and UEs 102 are depicted in FIG. 1, it is contemplated that any number of BSs 101 and UEs 102 may be included in the wireless communication system 100.
  • the wireless communication system 100 is compatible with any type of network that is capable of sending and receiving wireless communication signals.
  • the wireless communication system 100 is compatible with a wireless communication network, a cellular telephone network, a time division multiple access (TDMA) -based network, a code division multiple access (CDMA) -based network, an orthogonal frequency division multiple access (OFDMA) -based network, an LTE network, a 3GPP-based network, a 3GPP 5G network, a satellite communications network, a high altitude platform network, and/or other communications networks.
  • TDMA time division multiple access
  • CDMA code division multiple access
  • OFDMA orthogonal frequency division multiple access
  • the BS 101 may also be referred to as an access point, an access terminal, a base, a macro cell, a node-B, an enhanced node B (eNB) , a gNB, a home node-B, a relay node, or a device, or described using other terminology used in the art.
  • the BS 101 is generally part of a radio access network that may include a controller communicably coupled to the BS 101.
  • the UE (s) 102 may include vehicle UEs (VUEs) and/or power-saving UEs (also referred to as power sensitive UEs) .
  • the power-saving UEs may include vulnerable road user (VRUs) , public safety UEs (PS-UEs) , and/or commercial sidelink UEs (CS-UEs) that are sensitive to power consumption.
  • a VRU may include a pedestrian UE (P-UE) , a cyclist UE, a wheelchair UE or other UEs which require power saving compared with a VUE.
  • the UE 102a may be a power-saving UE and the UE 102b may be a VUE.
  • the UE (s) 102 may include computing devices, such as desktop computers, laptop computers, personal digital assistants (PDAs) , tablet computers, smart televisions (e.g., televisions connected to the Internet) , set-top boxes, game consoles, security systems (including security cameras) , vehicle on-board computers, network devices (e.g., routers, switches, and modems) , or the like.
  • computing devices such as desktop computers, laptop computers, personal digital assistants (PDAs) , tablet computers, smart televisions (e.g., televisions connected to the Internet) , set-top boxes, game consoles, security systems (including security cameras) , vehicle on-board computers, network devices (e.g., routers, switches, and modems) , or the like.
  • the UE (s) 102 may include a portable wireless communication device, a smart phone, a cellular telephone, a flip phone, a device having a subscriber identity module, a personal computer, a selective call receiver, or any other device that is capable of sending and receiving communication signals on a wireless network.
  • the UE (s) 102 may include wearable devices, such as smart watches, fitness bands, optical head-mounted displays, or the like.
  • the UE (s) 102 may be referred to as a subscriber unit, a mobile, a mobile station, a user, a terminal, a mobile terminal, a wireless terminal, a fixed terminal, a subscriber station, a user terminal, or a device, or described using other terminology used in the art.
  • Both the UE 102a and the UE 102b in the embodiments of FIG. 1 may transmit information to the BS 101 and receive control information from the BS 101, for example, via LTE or new radio (NR) Uu interface.
  • NR new radio
  • the UE 102a may function as a transmitting (Tx) UE, and the UE 102b may function as a receiving (Rx) UE.
  • the UE 102a may transmit messages to the UE 102b through a sidelink, for example, PC5 interface as defined in 3GPP TS 23.303.
  • the UE 102a may transmit information or data to other UE (s) within the wireless communication system 100, through sidelink unicast, sidelink groupcast, or sidelink broadcast. For instance, the UE 102a may transmit data to the UE 102b in a sidelink unicast session.
  • the UE 102a may transmit data to the UE 102b and other UE (s) in a groupcast group (not shown in FIG. 1) by a sidelink groupcast transmission session. Also, the UE 102a may transmit data to the UE 102b and other UE (s) (not shown in FIG. 1) by a sidelink broadcast transmission session.
  • the UE 102b may function as a Tx UE and transmit messages
  • the UE 102a may function as an Rx UE and receive the messages from the UE 102b.
  • a Tx UE may perform a transmission in sidelink, and the resource (s) for the transmission may be determined based on network dynamic scheduling or based on a resource selection performed by the Tx UE.
  • the resource selection performed by the Tx UE may include a random resource selection, a partial sensing-based resource selection, or a sensing-based resource selection. All the above mechanisms may follow a rule of priority.
  • a transmission scheduled by a network may have a higher priority and should be performed firstly.
  • a UE traffic with a higher priority should be transmitted firstly.
  • the Tx UE is a power-saving UE, it usually performs a random resource selection or a partial sensing-based resource selection to select resource (s) for sidelink transmission, and thus the probability of resource conflict caused by the power-saving UE is relatively higher than that caused by a VUE.
  • One solution to protect a transmission based on such insufficient sensing (e.g., performing a partial sensing-based resource selection) or no sensing (e.g., performing a random resource selection) from the power-saving UE is to make an Rx UE (e.g., a VUE) to be aware of whether the transmission is made by a power-saving UE or not.
  • the Tx UE may transmit 1-bit signalling in sidelink control information (SCI) to indicate whether a physical sidelink control channel (PSCCH) and/or physical sidelink shared channel (PSSCH) is sent by a power-saving UE or a VUE.
  • SCI sidelink control information
  • PSCCH physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • the Tx UE may, alternatively or additionally, transmit 1-bit signalling in SCI to indicate whether the resource (s) for the transmission is selected based on partial sensing-based resource selection or random resource selection.
  • the Rx UE may avoid using the resource (s) used by or reserved for the transmission of the power-saving UE, even though a transmission of the Rx UE has a higher priority than that of the transmission of the power-saving UE.
  • the current priority rule may be affected and the transmission from the Rx UE may be affected.
  • SL CR sidelink channel occupancy ratio
  • SL CBR sidelink channel busy ratio
  • Table 1 shows the definition and application scenarios for the SL CR.
  • the SL CR evaluated at slot n is defined as the total number of sub-channels used for the UE's transmissions in slots [n-a, n-1] and granted in slots [n, n+b] divided by the total number of configured sub-channels in the transmission pool over [n-a, n+b] .
  • the UE In evaluating SL CR, the UE shall assume the transmission parameter used at slot n is reused according to the existing grant (s) in slot [n+1, n+b] without packet dropping.
  • the slot index is based on a physical slot index.
  • a resource is considered granted if it is a member of a selected sidelink grant as defined in TS 38.321.
  • SL CR is evaluated for each (re) transmission. In some embodiments, SL CR can be computed per priority level.
  • Table 1 also shows that the SL CR may be applicable for RRC_IDLE intra-frequency, RRC_IDLE inter-frequency, RRC_CONNECTED intra-frequency, and RRC_CONNECTED inter-frequency.
  • Table 2 shows the definition and application scenarios for the SL CBR.
  • the SL CBR measured at slot n is defined as the portion of sub-channels in the resource pool whose SL received signal strength indicators (RSSIs) measured by the UE exceed a (pre-) configured threshold sensed over a CBR measurement window [n-a, n-1] , wherein a is equal to 100 or 100 ⁇ 2 ⁇ slots, according to a higher layer parameter timeWindowSize-CBR as specified in 3GPP standard documents.
  • the slot index is based on a physical slot index.
  • Table 2 also shows that the SL CBR may be applicable for RRC_IDLE intra-frequency, RRC_IDLE inter-frequency, RRC_CONNECTED intra-frequency, and RRC_CONNECTED inter-frequency.
  • the above two parameters may reflect the transmission ratio and transmission quality of a power-saving UE.
  • the above two parameters cannot reflect the transmission avoidance level of a UE (e.g., a VUE) caused by power-saving UE (s) .
  • embodiments of the present application may provide technical solutions for sidelink transmission, which can protect a transmission of a power-saving UE.
  • embodiments of the present application also define a new parameter, which can reflect a transmission avoidance level of a UE (e.g., a VUE) caused by power-saving UE (s) .
  • the UE may report the new parameter to a BS, such that the BS may adjust the number of the power-saving UE (s) and/or the resources used for the UE and/or the power-saving UE (s) , thereby ensuring the transmission opportunities of the UE. More details on embodiments of the present application will be described in the following text in combination with the appended drawings.
  • FIG. 2 is a flow chart illustrating an exemplary method for SL transmission according to some embodiments of the present application.
  • the method may be performed by a first UE, for example, an Rx UE or the UE 102b as shown in FIG. 1.
  • the first UE may be a VUE.
  • the first UE may receive a sidelink resource reservation indication from a second UE (e.g., a Tx UE or the UE 102a as shown in FIG. 1) .
  • the sidelink resource reservation indication may indicate a second set of resources for a second sidelink transmission of the second UE, wherein the second transmission is transmitted on the second set of resources or is to be transmitted on the second set of resources.
  • the first UE may also receive a UE type indication from the second UE.
  • the UE type indication may indicate that the second UE is a UE performing random resource selection and/or that the second UE is a power-saving UE.
  • the first UE may also receive a priority indication indicating a second transmission priority of the second sidelink transmission.
  • the above three indications may be received via SCI.
  • the second UE may transmit the above three indications to one or more UEs including the first UE.
  • the first UE may determine a first set of resources for a first sidelink transmission of the first UE before step 201, concurrently with step 201, or after step 201.
  • the first set of resources may be determined based on a partial sensing-based resource selection by the first UE. That is, the first UE may perform a partial sensing-based resource selection to select the first set of resources for the first sidelink transmission.
  • the first set of resources may be determined based on a sensing-based resource selection by the first UE. That is, the first UE may perform a sensing-based resource selection to select the first set of resources for the first sidelink transmission.
  • the first set of resources may be indicated by DCI from a network (e.g., a BS 101 in the network) . That is, the first set of resources for the first sidelink transmission may be scheduled by the network.
  • first sidelink transmission and second sidelink transmission are used to differentiate the sidelink transmissions from the first UE and the second UE, but are not used to limit the orders of the sidelink transmissions among multiple sidelink transmissions.
  • first set of resources and second set of resources are used to differentiate the resources for the first UE and the second UE, but are not used to limit the orders of the resources among multiple resources.
  • the first UE may determine whether the second set of resources for the second sidelink transmission at least partially overlaps the first set of resources for the first sidelink transmission and whether the second transmission priority of the second sidelink transmission is lower than or equal to the first transmission priority of the first sidelink transmission.
  • the second set of resources at least partially overlaps the first set of resources may refer to that the second set of resources is the same as the first set of resources or at least one resource in the second set of resources is the same as at least one resource in the first set of resources.
  • a resource may include a resource in time and/or frequency domain.
  • the second set of resources at least partially overlapping the first set of resources may refer to the second set of resources at least partially overlapping the first set of resources in time and/or frequency domain.
  • the second set of resources for the second sidelink transmission of the second UE at least partially overlaps the first set of resources for the first sidelink transmission of the first UE and the second transmission priority of the second sidelink transmission is lower than or equal to the first transmission priority of the first sidelink transmission.
  • the first UE may determine whether to perform a sidelink transmission avoidance based on first configuration information.
  • the first configuration information may indicate whether to perform a sidelink transmission avoidance.
  • performing the sidelink transmission avoidance may include at least one of dropping the first sidelink transmission on the first set of resources or re-performing resource sensing and selection for the first sidelink transmission.
  • the first UE may perform the sidelink transmission avoidance; in the case that the first configuration information indicates not to perform a sidelink transmission avoidance, the first UE may perform the first sidelink transmission on the first set of resources.
  • the first configuration information may be predefined per resource pool. That is, each resource pool may be predefined with corresponding first configuration information regarding whether to perform a sidelink transmission avoidance.
  • the first UE selects or is configured with a resource pool, it may determine the corresponding first configuration information.
  • the first configuration information per resource pool may be predefined in 3GPP standard documents.
  • the first configuration information may be pre-configured per resource pool to the first UE. That is, each resource pool may be pre-configured with corresponding first configuration information regarding whether to perform a sidelink transmission avoidance. Such pre-configuration may be specific to the first UE. When the first UE selects or is configured with a resource pool, it may determine the corresponding first configuration information.
  • the first configuration information is configured per resource pool to the first UE. That is, each resource pool may be configured with corresponding first configuration information regarding whether to perform a sidelink transmission avoidance.
  • Such configuration may be transmitted from the network to the first UE via a higher layer (e.g., a layer higher than a physical layer) signalling.
  • the higher layer signalling may be a radio resource control (RRC) signalling.
  • RRC radio resource control
  • the first set of resources is indicated by DCI.
  • the DCI may further include a first indicator as the first configuration information.
  • the first indicator may have a first value indicating to perform the sidelink transmission avoidance. Then, after receiving the first indicator, the first UE may drop the first sidelink transmission on the first set of resources and transmit a second indicator (e.g., to the network) to indicate performing the sidelink transmission avoidance on the first set of resources, i.e., to indicate that the sidelink transmission avoidance on the first set of resources has been performed.
  • the first indicator may be a 1-bit field having a value "1" or "0" in the DCI.
  • the second indicator may be "acknowledgement (ACK) " or “non-acknowledgement (NACK) .
  • the first value of the first indicator may be "1, " which indicates at least one of: the first UE should drop the first sidelink transmission on the first set of resources when a collision on the first set of resources is detected and report the second indicator on physical uplink control channel (PUCCH) or physical uplink shared channel (PUSCH) ; and the first UE should report an indicator different from the second indicator or not report any indicator when no collision on the first set of resources is detected.
  • PUCCH physical uplink control channel
  • PUSCH physical uplink shared channel
  • the collision on the first set of resources may refer to that there is a set of resources (e.g., the second set of resources) for another sidelink transmission (e.g., the second sidelink transmission) of another UE (e.g., the second UE) at least partially overlapping the first set of resources for the first sidelink transmission, wherein the another UE is a UE performing random resource selection or a power-saving UE and the transmission priority of the another sidelink transmission is lower than or equal to that of the first sidelink transmission.
  • the second indicator may be "NACK" and the indicator different from the second indicator may be "ACK. " In some other embodiments, the second indicator may be "ACK” and the indicator different from the second indicator may be "NACK.
  • the first UE may drop the first sidelink transmission on the first set of resources and report the second indicator on PUCCH or PUSCH; in the case that the second set of resources does not overlap the first set of resources, the first UE may report an indicator different from the second indicator on the PUCCH or PUSCH or not report any indicator.
  • the first indicator may have a second value indicating not to perform the sidelink transmission avoidance. Then, after receiving the first indicator, the first UE may perform the first sidelink transmission on the first set of resources. In such embodiment, the first UE may transmit a third indicator (e.g., to the network) to indicate a collision on the first set of resources or may not transmit any indicator to indicate the collision.
  • the first indicator may be 1-bit field having a value "1" or "0" in the DCI.
  • the third indicator may be "NACK" or "ACK. "NACK" or "ACK.
  • the second value of the first indicator may be "0, " which indicates at least one of: the first UE should perform the first sidelink transmission on the first set of resources even when a collision on the first set of resources is detected and report "NACK” on PUCCH or PUSCH; and the first UE should report "ACK” or not report any indicator when no collision on the first set of resources is detected.
  • the first UE may perform the first sidelink transmission on the first set of resources and report "NACK" on PUCCH or PUSCH to indicate the collision on the first set of resources; in the case that the second set of resources does not overlap the first set of resources, the first UE may report "ACK" on PUCCH or PUSCH or not report any indicator.
  • no PUCCH resource or PUSCH resource is provided by the network for the first UE to report whether a collision on the first set of resources is detected when the first indicator has the second value indicating not to perform the sidelink transmission avoidance. That is, regardless of whether the collision on the first set of resources is detected, the first UE should not transmit an indicator.
  • the first value of the first indicator is “1” and the second value of the first indicator is “0, " it is contemplated that the first value of the first indicator may be “0” and the second value of the first indicator may be “1” in some other embodiments.
  • the first UE may evaluate a sidelink transmission avoidance value.
  • the sidelink transmission avoidance value may be defined as: a total number of sidelink transmission avoidances performed in a first time duration (which is referred to as "definition 1" ) .
  • the first time duration may be one or more milliseconds, one or more slots, or any other time period.
  • the first time duration may be predefined per resource pool. That is, each resource pool may be predefined with a corresponding first time duration.
  • the first time duration may be pre-configured per resource pool to the first UE. That is, each resource pool may be pre-configured with a corresponding first time duration.
  • Such pre-configuration may be specific to the first UE.
  • the first time duration may be configured per resource pool to the first UE. That is, each resource pool may be configured with a corresponding first time duration.
  • Such configuration may be transmitted from the network to the first UE via a higher layer signalling.
  • the higher layer signalling may be an RRC signalling.
  • the sidelink transmission avoidance value evaluated at slot n is defined as the total number of sidelink transmission avoidances performed in slots [n-k, n-1] , wherein k is the first time duration in terms of slots, k is an integer larger than 1, and n is an integer larger than or equal to k.
  • k may be 100 slots.
  • the sidelink transmission avoidance value may be defined as: a ratio between a total number of sidelink transmission avoidances performed in a second time duration and a total number of sidelink transmissions performed in the second time duration (which is referred to as "definition 2" ) .
  • the second time duration may be one or more milliseconds, one or more slots, or any other time period.
  • the second time duration may be predefined per resource pool. That is, each resource pool may be predefined with a corresponding second time duration. In another embodiment, the second time duration may be pre-configured per resource pool to the first UE. That is, each resource pool may be pre-configured with a corresponding second time duration. Such pre-configuration may be specific to the first UE. In yet another embodiment, the second time duration may be configured per resource pool to the first UE. That is, each resource pool may be configured with a corresponding second time duration. Such configuration may be transmitted from the network to the first UE via a higher layer signalling. For example, the higher layer signalling may be an RRC signalling.
  • the sidelink transmission avoidance value evaluated at slot n is defined as a ratio between a total number of sidelink transmission avoidances performed in slots [n-k, n-1] and a total number of sidelink transmissions performed in slots [n-k, n-1] , wherein k is the second time duration in terms of slots, k is an integer larger than 1, and n is an integer larger than or equal to k.
  • k may be 100 slots.
  • the sidelink transmission avoidance value may be defined as: a total number of sidelink transmission avoidances performed in a first number of sidelink transmissions (e.g., 10, 100, or 1000 sidelink transmissions) (which is referred to as "definition 3" ) .
  • the first number of sidelink transmissions may be predefined per resource pool. That is, each resource pool may be predefined with a corresponding first number of sidelink transmissions.
  • the first number of sidelink transmissions may be pre-configured per resource pool to the first UE. That is, each resource pool may be pre-configured with a corresponding first number of sidelink transmissions.
  • Such pre-configuration may be specific to the first UE.
  • the first number of sidelink transmissions may be configured per resource pool to the first UE. That is, each resource pool may be configured with a corresponding first number of sidelink transmissions.
  • Such configuration may be transmitted from the network to the first UE via a higher layer signalling.
  • the higher layer signalling may be an RRC signalling.
  • the sidelink transmission avoidance value may be defined as: a ratio between a total number of sidelink transmission avoidances performed in a second number of sidelink transmissions (e.g., 10, 100, or 1000 sidelink transmissions) and the second number (which is referred to as "definition 4" ) .
  • the second number of sidelink transmissions may be predefined per resource pool. That is, each resource pool may be predefined with a corresponding second number of sidelink transmissions. In another embodiment, the second number of sidelink transmissions may be pre-configured per resource pool to the first UE. That is, each resource pool may be pre-configured with a corresponding second number of sidelink transmissions. Such pre-configuration may be specific to the first UE. In yet another embodiment, the second number of sidelink transmissions may be configured per resource pool to the first UE. That is, each resource pool may be configured with a corresponding second number of sidelink transmissions. Such configuration may be transmitted from the network to the first UE via a higher layer signalling. For example, the higher layer signalling may be an RRC signalling.
  • Table 3 shows some definitions and application scenarios for the sidelink transmission avoidance ratio.
  • the sidelink transmission avoidance value may be defined as one of Examples 1-4.
  • k is the number of slots and is an integer larger than 1
  • n is an integer larger than or equal to k.
  • m is the number of sidelink transmissions and is an integer larger than 1.
  • Table 3 also shows that the sidelink transmission avoidance value may be applicable for RRC_IDLE intra-frequency, RRC_IDLE inter-frequency, RRC_CONNECTED intra-frequency, and RRC_CONNECTED inter-frequency.
  • the first UE may transmit the sidelink transmission avoidance value to the network based on second configuration information.
  • the second configuration information may be predefined per resource pool. That is, each resource pool may be predefined with corresponding second configuration information. When the first UE selects or is configured with a resource pool, it may determine the corresponding second configuration information. In some embodiments, the second configuration information per resource pool may be predefined in 3GPP standard documents.
  • the second configuration information may be pre-configured per resource pool to the first UE. That is, each resource pool may be pre-configured with corresponding second configuration information. Such pre-configuration may be specific to the first UE. When the first UE selects or is configured with a resource pool, it may determine the corresponding second configuration information.
  • the second configuration information may be configured per resource pool to the first UE. That is, each resource pool may be configured with corresponding second configuration information.
  • Such configuration may be transmitted from the network to the first UE via a higher layer (e.g., a layer higher than a physical layer) signalling.
  • the higher layer signalling may be an RRC signalling.
  • the second configuration information may indicate a period.
  • the first UE may transmit the sidelink transmission avoidance value periodically based on the period indicated by the second configuration information.
  • the period may be the same as or may be different from the first time duration.
  • the sidelink transmission avoidance value is defined as definition 2
  • the period may be the same as or may be different from the second time duration.
  • the sidelink transmission avoidance value is defined as definition 1, the first time duration is 20 ms, and the period is 100 ms, then the first UE may transmit a total number of sidelink transmission avoidances performed in latest 20ms (i.e., 80ms-100ms) every 100ms.
  • the second configuration information may indicate a third number of sidelink transmissions.
  • the first UE may transmit the sidelink transmission avoidance value each time the third number of sidelink transmissions have been performed.
  • the third number may be the same as or may be different from the first number.
  • the third number may be the same as or may be different from the second number.
  • the sidelink transmission avoidance value is defined as definition 3, the first number is 100, and the third number is 1000, then the first UE may transmit a total number of sidelink transmission avoidances performed in latest 100 sidelink transmissions every 1000 sidelink transmissions.
  • the second configuration information may indicate a threshold.
  • the first UE may transmit the sidelink transmission avoidance value when the sidelink transmission avoidance value is higher than or equal to the threshold.
  • the threshold may be a threshold number of sidelink transmission avoidances.
  • the threshold may be a threshold ratio.
  • the first UE may transmit the sidelink transmission avoidance value in at least one of an uplink control channel, an uplink data channel, or a higher layer signaling (e.g., an RRC signaling) to the network.
  • a higher layer signaling e.g., an RRC signaling
  • the first UE may transmit the sidelink transmission avoidance value on a resource (e.g., a resource in time and/or frequency domain) .
  • the resource may be scheduled by the network.
  • the resource may be indicated by the second configuration information.
  • the resource for transmitting each sidelink transmission avoidance value may be configured by the network via a higher layer signalling, and thus the first UE may transmit each sidelink transmission avoidance value on the resource configured by the network without requesting the resource from the network.
  • FIG. 3 is a flow chart illustrating another exemplary method for SL transmission according to some embodiments of the present application. The method may be performed by a network (e.g., the BS 101 as shown in FIG. 1) .
  • a network e.g., the BS 101 as shown in FIG. 1.
  • the network may transmit first configuration information to a first UE (e.g., the UE 102b as shown in FIG. 1) .
  • the first configuration information may indicate to the first UE whether to perform a sidelink transmission avoidance when a first set of resources for a first sidelink transmission of the first UE at least partially overlaps a second set of resources for a second sidelink transmission of a second UE which is a UE performing random resource selection or a power-saving UE and a first transmission priority of the first sidelink transmission is higher than or equal to a second transmission priority of the second sidelink transmission.
  • the first configuration information may be configured per resource pool to the first UE. That is, for each resource pool, the network may configure a corresponding first configuration information for the resource pool.
  • Such configuration may be transmitted from the network to the first UE via a higher layer (e.g., a layer higher than a physical layer) signalling.
  • the higher layer signalling may be a radio resource control (RRC) signalling.
  • RRC radio resource control
  • the first UE may perform the sidelink transmission avoidance; in the case that the first configuration information indicates not to perform sidelink transmission avoidance, the first UE may perform the first sidelink transmission on the first set of resources.
  • performing the sidelink transmission avoidance may include at least one of dropping the first sidelink transmission on the first set of resources or re-performing resource sensing and selection for the first sidelink transmission.
  • the first set of resources may be determined based on a partial sensing-based resource selection by the first UE. In some other embodiments, the first set of resources may be determined based on a sensing-based resource selection by the first UE. In some other embodiments, the first set of resources may be indicated by DCI from the network.
  • the DCI may further include a first indicator as the first configuration information.
  • the first indicator may have a first value indicating to perform the sidelink transmission avoidance. Then, after transmitter the first indicator, the network may receive a second indicator from the first UE to indicate performing the sidelink transmission avoidance for the first sidelink transmission on the first set of resources (i.e., the first UE has performed the sidelink transmission avoidance for the first sidelink transmission on the first set of resources) when the first set of resources at least partially overlaps the second set of resources and the first transmission priority is higher than or equal to the second transmission priority.
  • the first indicator may be a 1-bit field having a value "1" or "0" in the DCI.
  • the second indicator may be “acknowledgement (ACK) " or “non-acknowledgement (NACK) . "
  • the first value of the first indicator may be "1, " which indicates at least one of: the first UE should drop the first sidelink transmission on the first set of resources when a collision on the first set of resources is detected and report the second indicator on physical uplink control channel (PUCCH) or physical uplink shared channel (PUSCH) ; and the first UE should report an indicator different from the second indicator or not report any indicator when no collision on the first set of resources is detected.
  • PUCCH physical uplink control channel
  • PUSCH physical uplink shared channel
  • the collision on the first set of resources may refer to that there is a set of resources (e.g., the second set of resources) for another sidelink transmission (e.g., the second sidelink transmission) of another UE (e.g., the second UE) at least partially overlapping the first set of resources for the first sidelink transmission, wherein the another UE is a UE performing random resource selection or a power-saving UE and the transmission priority of the another sidelink transmission is lower than or equal to that of the first sidelink transmission.
  • the second indicator may be "NACK" and the indicator different from the second indicator may be "ACK. " In some other embodiments, the second indicator may be "ACK” and the indicator different from the second indicator may be "NACK.
  • the network may receive the second indicator on PUCCH or PUSCH; in the case that the second set of resources does not overlap the first set of resources, the network may receive an indicator different from the second indicator on PUCCH or PUSCH or not receive any indicator.
  • the first indicator may have a second value indicating not to perform the sidelink transmission avoidance. Then, after transmitting the first indicator, the network may receive a third indicator to indicate a collision on the first set of resources from the first UE or may not receive any indicator from the first UE even when the first set of resources at least partially overlaps the second set of resources and the first transmission priority is higher than or equal to the second transmission priority.
  • the first indicator may be 1-bit field having a value "1" or "0" in the DCI.
  • the third indicator may be "NACK" or "ACK. "NACK" or "ACK.
  • the second value of the first indicator may be "0, " which indicates at least one of: the first UE should perform the first sidelink transmission on the first set of resources even when a collision on the first set of resources is detected and report "NACK” on PUCCH or PUSCH; and the first UE should report "ACK” or not report any indicator when no collision on the first set of resources is detected.
  • the network may receive "NACK" on PUCCH or PUSCH to indicate the collision on the first set of resources; in the case that the second set of resources does not overlap the first set of resources, the network may receive "ACK" on PUCCH or PUSCH or not receive any indicator.
  • the network does not provide any PUCCH resource or PUSCH resource for the first UE to report whether a collision on the first set of resources is detected when the first indicator has the second value indicating not to perform the sidelink transmission avoidance. That is, regardless of whether the collision on the first set of resources is detected, the first UE should not transmit an indicator.
  • the first value of the first indicator is “1” and the second value of the first indicator is “0, " it is contemplated that the first value of the first indicator may be “0” and the second value of the first indicator may be “1” in some other embodiments.
  • the network in order to enable the network to know the sidelink transmission avoidance level of the first UE, may configure a time duration or a first number of sidelink transmissions for the first UE to evaluate a sidelink transmission avoidance value.
  • the time period may be one or more milliseconds, one or more slots, or any other time period.
  • the network may receive the sidelink transmission avoidance value from the first UE.
  • the network may configure a time duration to the first UE.
  • the sidelink transmission avoidance value may be defined as one of: a total number of sidelink transmission avoidances performed in the time duration (i.e., definition 1 as stated above) ; or a ratio between a total number of sidelink transmission avoidances performed in the time duration and a total number of sidelink transmissions performed in the time duration (i.e., definition 2 as stated above) .
  • the network may configure a first number of sidelink transmissions to the first UE.
  • the sidelink transmission avoidance value may be defined as one of: a total number of sidelink transmission avoidances performed in the first number of sidelink transmissions (i.e., definition 3 as stated above) ; or a ratio between a total number of sidelink transmission avoidances performed in the first number of sidelink transmissions and the first number (i.e., definition 4 as stated above) .
  • the time duration or the first number is configured per resource pool to the first UE. That is, each resource pool may be configured with a corresponding time duration or a corresponding first number.
  • Such configuration may be transmitted from the network to the first UE via a higher layer signalling.
  • the higher layer signalling may be an RRC signalling.
  • the network may transmit second configuration information to the first UE.
  • the network may receive the sidelink transmission avoidance value based on the second configuration information.
  • the second configuration information is configured per resource pool to the first UE. That is, each resource pool may be configured with corresponding second configuration information.
  • Such configuration may be transmitted from the network to the first UE via a higher layer (e.g., a layer higher than a physical layer) signalling.
  • the higher layer signalling may be an RRC signalling.
  • the second configuration information may indicate a period. Then, after transmitting the second configuration information, the network may receive the sidelink transmission avoidance value periodically based on the period indicated by the second configuration information.
  • the second configuration information may indicate a second number of sidelink transmissions. Then, after transmitting the second configuration information, the network may receive the sidelink transmission avoidance value each time the second number of sidelink transmissions have been performed by the first UE.
  • the second configuration information may indicate a threshold. Then, after transmitting the second configuration information, the network may receive the sidelink transmission avoidance value when the sidelink transmission avoidance value is higher than or equal to the threshold.
  • the threshold may be a threshold number of sidelink transmission avoidances. In the case that the sidelink transmission avoidance value is defined as definition 2 or 4, the threshold may be a threshold ratio.
  • the network may receive the sidelink transmission avoidance value in at least one of an uplink control channel, an uplink data channel, or a higher layer signaling (e.g., an RRC signaling) from the first UE.
  • a higher layer signaling e.g., an RRC signaling
  • the sidelink transmission avoidance value may be transmitted on a resource (e.g., a resource in time and/or frequency domain) .
  • the resource may be scheduled by the network.
  • the resource may be indicated by the second configuration information. For example, for the sidelink transmission avoidance value being transmitted periodically, the network may configure the resource for transmitting each sidelink transmission avoidance value via a higher layer signalling to the first UE. Then, the network may receive each sidelink transmission avoidance value on the resource configured by the network.
  • the network may know the sidelink transmission avoidance level of the first UE caused by power-saving UE (s) , such that the network may adjust the number of the power-saving UE (s) and/or re-allocate the resource used by the power-saving UE (s) and/or the first UE. For example, in the case that the sidelink transmission avoidance level of the first UE is high, the network may reduce the number of power-saving UE (s) in the resource pool used by the first UE.
  • FIG. 4 illustrates a simplified block diagram of an exemplary apparatus 400 for SL transmission according to some embodiments of the present application.
  • the apparatus 400 may include a UE (e.g., a Tx UE or an Rx UE) or a network (e.g., a BS) as shown in FIG. 1.
  • a UE e.g., a Tx UE or an Rx UE
  • a network e.g., a BS
  • the apparatus 400 may include at least one non-transitory computer-readable medium 402, at least one receiving circuitry 404, at least one transmitting circuitry 406, and at least one processor 408.
  • the at least one receiving circuitry 404 and the at least one transmitting circuitry 406 can be integrated into at least one transceiver.
  • the at least one non-transitory computer-readable medium 402 may have computer executable instructions stored therein.
  • the at least one processor 408 may be coupled to the at least one non-transitory computer-readable medium 402, the at least one receiving circuitry 404 and the at least one transmitting circuitry 406. While shown to be coupled to each other via the at least one processor 408 in the example of FIG.
  • the at least one receiving circuitry 404, the at least one transmitting circuitry 406, the at least one non-transitory computer-readable medium 402, and the at least one processor 408 may be coupled to one another in various arrangements.
  • the at least one receiving circuitry 404, the at least one transmitting circuitry 406, the at least one non-transitory computer-readable medium 402, and the at least one processor 408 may be coupled to each other via one or more local buses (not shown for simplicity) .
  • the computer executable instructions stored on the at least one non-transitory computer-readable medium 402 can be programmed to implement a method with the at least one receiving circuitry 404, the at least one transmitting circuitry 406 and the at least one processor 408. The method may include the operations or steps as shown in FIG. 2 or 3.
  • 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 for SL transmission, including a processor and a memory.
  • Computer programmable instructions for implementing a method for SL transmission are stored in the memory, and the processor is configured to perform the computer programmable instructions to implement the method for SL transmission.
  • 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 for SL transmission as stated above or other method according to an embodiment of the present application.

Abstract

Des modes de réalisation de la présente demande concernent des procédés et des appareils de transmission de liaison latérale. Selon un mode de réalisation de la présente demande, un procédé mis en œuvre par un premier équipement utilisateur (UE) peut comprendre : la réception d'une indication de réservation de ressource de liaison latérale indiquant un deuxième ensemble de ressources pour une deuxième transmission de liaison latérale d'un deuxième UE, le deuxième ensemble de ressources chevauchant au moins partiellement un premier ensemble de ressources pour une première transmission de liaison latérale du premier UE; la réception d'une indication de type d'UE indiquant que le deuxième UE est un UE effectuant une sélection de ressource aléatoire ou un UE à économie d'énergie; la réception d'une indication de priorité indiquant une deuxième priorité de transmission de la deuxième transmission de liaison latérale, la deuxième priorité de transmission étant inférieure ou égale à une première priorité de transmission de la première transmission de liaison latérale; et la détermination de la nécessité d'effectuer un évitement de transmission de liaison latérale en fonction de premières informations de configuration. Des modes de réalisation de la présente demande peuvent protéger une transmission d'un UE à économie d'énergie, et également assurer des opportunités de transmission d'autres UE.
PCT/CN2021/082733 2021-03-24 2021-03-24 Procédés et appareils de transmission de liaison latérale WO2022198499A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180132254A1 (en) * 2015-04-10 2018-05-10 Lg Electronics Inc. Method and device for transmitting/receiving d2d signal considering priority in wireless communication system
CN111919500A (zh) * 2020-06-24 2020-11-10 北京小米移动软件有限公司 用户直连通信方法及装置、用户设备、存储介质
US20210037549A1 (en) * 2019-07-31 2021-02-04 Qualcomm Incorporated Techniques for handling scheduling conflicts between access link communications and sidelink communications

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180132254A1 (en) * 2015-04-10 2018-05-10 Lg Electronics Inc. Method and device for transmitting/receiving d2d signal considering priority in wireless communication system
US20210037549A1 (en) * 2019-07-31 2021-02-04 Qualcomm Incorporated Techniques for handling scheduling conflicts between access link communications and sidelink communications
CN111919500A (zh) * 2020-06-24 2020-11-10 北京小米移动软件有限公司 用户直连通信方法及装置、用户设备、存储介质

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ERICSSON: "Resource allocation Mode 2 for NR SL", 3GPP DRAFT; R1-2002234, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20200420 - 20200430, 10 April 2020 (2020-04-10), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051873494 *

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