EP4552302A1 - Procédé de coordination de la communication de deux systèmes de communication non interopérables utilisant une ressource au moins partiellement partagée - Google Patents

Procédé de coordination de la communication de deux systèmes de communication non interopérables utilisant une ressource au moins partiellement partagée

Info

Publication number
EP4552302A1
EP4552302A1 EP23758387.7A EP23758387A EP4552302A1 EP 4552302 A1 EP4552302 A1 EP 4552302A1 EP 23758387 A EP23758387 A EP 23758387A EP 4552302 A1 EP4552302 A1 EP 4552302A1
Authority
EP
European Patent Office
Prior art keywords
type
resource
communication
radio resources
interfaces
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23758387.7A
Other languages
German (de)
English (en)
Inventor
David GONZÁLEZ GONZÁLEZ
Rakshith JAGANNATH
Yong Liang Guan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aumovio Germany GmbH
Nanyang Technological University
Original Assignee
Continental Automotive Technologies GmbH
Nanyang Technological University
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 Continental Automotive Technologies GmbH, Nanyang Technological University filed Critical Continental Automotive Technologies GmbH
Publication of EP4552302A1 publication Critical patent/EP4552302A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/72—Admission control; Resource allocation using reservation actions during connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point

Definitions

  • V2V vehicle-to- vehicle
  • V2I vehicle-to-infrastructure
  • V2X vehicle-to-everything (or anything, for that matter) is meant to cover all conceivable communication scenarios.
  • V2X communication the data transfer is preferably done directly between the communication partners, without using a base station or other elements of the network as intermediary, since direct communication exhibits less delay between transmission and reception.
  • direct communication may use the same communication interface as the LTE or NR communication that goes to and trough the corresponding network, but the data is not routed to the base station and through the network, the direct communication is also referred to as ‘sidelink’ communication, or SL.
  • LTE V2X is expected to operate on the 5.9 GHz band reserved in certain markets, e.g., United States, Europe, China, for ITS services.
  • vehicles, or user equipment (UE), as used interchangeably herein utilize the so- called PC5 interface, whereas they utilize the Uu interface for vehicle-to-network (V2N) communication.
  • V2N vehicle-to-network
  • LTE V2X has been designed to support basic cooperative active traffic safety, traffic management, and telematics applications and services.
  • LTE V2X supports similar services as those supported by DSRC or its European counterpart ITS-G5.
  • LTE V2X defines new physical (PHY) and medium access control (MAC) layers for V2X and reuses the upper V2X layers and protocols specified by ETSI (European Telecommunications Standardization Institute), IEEE (Institute of Electrical and Electronic Engineers), and SAE (Society of Automotive Engineers).
  • ETSI European Telecommunications Standardization Institute
  • IEEE Institute of Electrical and Electronic Engineers
  • SAE Society of Automotive Engineers
  • LTE V2X defines two resource allocation modes, mode 3 and mode 4, for V2X SL communications.
  • mode 3 the cellular infrastructure (eNB) manages the V2X SL communications. This includes selecting and configuring the communication resources, i.e. , sub-channels.
  • Mode 4 can operate without cellular infrastructure support. In this case, vehicles autonomously select, manage and configure the sub-channels. Vehicles utilizing mode 3 need to be in network coverage, while vehicles using mode 4 can operate out of network coverage.
  • LTE V2X uses SC-FDMA (Single-Carrier Frequency-Division Multiple Access) and supports 10 MHz and 20 MHz channels.
  • the channel is divided into 180 kHz Resource Blocks (RBs) that correspond to 12 subcarriers of 15 kHz each.
  • RBs Resource Blocks
  • the channel is organized into 1 ms subframes.
  • Each subframe has 14 OFDM symbols with normal cyclic prefix.
  • DMRSs demodulation reference signals
  • RBs are grouped into sub-channels.
  • a sub-channel can include RBs only within the same subframe.
  • the number of RBs per sub-channel can vary and is (pre-)configured.
  • (Pre-)configuration refers to a configuration that is:
  • eNB cellular base station
  • gNB cellular base station
  • Transport Blocks TBs
  • the LTE standard does not specify an algorithm for the selection of sub-channels in mode 3. Instead, it defines two scheduling approaches, dynamic scheduling and Semi-Persistent Scheduling (SPS).
  • dynamic scheduling UEs must request sub-channels from the eNB for each TB.
  • SPS scheduling the eNB reserves sub-channels so that a UE can transmit several TBs.
  • the eNB can configure the periodicity of the reserved sub-channels.
  • LTE mode 3 can outperform LTE mode 4 since the scheduling of transmissions is centralized at the eNB. However, it requires operating in network coverage and introduces cellular uplink (UL) and downlink (DL) signalling overhead. LTE mode 3 can also encounter challenges at the cell boundaries, in particular when different operators serve neighbouring UEs.
  • 5G NR V2X has been designed to complement LTE V2X. While LTE V2X supports basic active safety and traffic management use cases, 5G NR V2X supports advanced use cases and higher automation levels. Like LTE, the 5G system architecture supports two operation modes for V2X communication, namely V2X communication over the PC5 reference point or interface and V2X communication over the Uu reference point or interface.
  • 5G NR is specified for operation in two frequency ranges, FR1 extending from 450 MHz to 6 GHz and FR2 extending from 24.25 GHz to 52.6 GHz.
  • the maximum carrier bandwidth is 200 MHz for FR1 and 400 MHz in FR2.
  • the NR infrastructure gNB
  • gNB can support such wide bandwidths, this may not be the case for all UEs, in particular low-end UEs.
  • supporting a very large bandwidth may also imply higher power consumption at the UE, both from the radio frequency (RF) and baseband signal processing perspectives.
  • RF radio frequency
  • BWP bandwidth part
  • a BWP consists of a contiguous portion of bandwidth within the carrier bandwidth where a single numerology is employed. By defining a small BWP, the computational complexity and power consumption of a UE can be reduced. As each BWP can have a different bandwidth and numerology, BWPs enable a more flexible and efficient use of the resources by dividing the carrier bandwidth for multiplexing transmissions with different configurations and requirements.
  • a subset of the available SL resources is (pre-)configured to be used by several UEs for their SL transmissions. This subset of available SL resources is referred to as a resource pool (RP) and is illustrated in figure 2.
  • a resource pool comprises different sub channels and multiple time slots.
  • the common resource blocks within an RP are referred to as physical resource blocks (PRB).
  • An RP consists of contiguous PRBs and contiguous or non-contiguous slots that have been (pre-)configured for SL transmissions.
  • An RP must be defined within the SL BWP. Therefore, a single numerology is used within an RP. If a UE has an active uplink (UL) BWP, the SL BWP must use the same numerology as the UL BWP if they are both included in the same carrier. Otherwise, the SL BWP is deactivated.
  • UL uplink
  • an RP is divided into a (pre-)configured number L of contiguous sub-channels, where a sub-channel consists of a group of consecutive PRBs in a slot.
  • the number M su b of PRBs in a sub-channel corresponds to the subchannel size, which is (pre-)configured within an RP.
  • the subchannel size Msub can be equal to 10, 12, 15, 20, 25, 50, 75, or 100 PRBs.
  • a subchannel represents the smallest unit for a sidelink data transmission or reception.
  • a sidelink transmission can use one or multiple sub-channels.
  • the slots that are part of an RP are (pre-)configured and occur with a periodicity of 10240 ms.
  • the slots that are part of an RP can be (pre-)configured with a bitmap.
  • the length of the bitmap can be equal to 10, 11 , 12, ... , 160.
  • An RP can be used for all transmission types, i.e. , unicast, groupcast, and broadcast, and can be shared by several UEs for their SL transmissions.
  • a UE can be (pre-)configured with multiple RPs for transmission, i.e., transmit RPs, and with multiple RPs for reception, i.e., receive RPs.
  • a UE can then receive data on resource pools used for SL transmissions by other UEs, while the UE can still transmit on the SL using its transmit resource pools.
  • 5GAA release 16 defines two modes, mode 1 and mode 2, for the selection of subchannels in NR V2X SL communications using the NR V2X PC5 interface. These two modes are the counterparts to modes 3 and 4 in LTE V2X discussed further above. However, LTE V2X only supports broadcast SL communications while NR V2X supports broadcast, groupcast, and unicast SL communications.
  • NR mode 1 Similar to mode 3 in LTE V2X, in NR mode 1 the gNB assigns and manages the SL radio resources for V2V communications using the NR Uu interface. UEs must therefore be in network coverage to operate using NR mode 1 .
  • SL radio resources can be allocated from licensed carriers dedicated to SL communications or from licensed carriers that share resources between SL and UL communications.
  • the SL radio resources can be configured so that NR mode 1 and NR mode 2 use separate resource pools.
  • the alternative is that NR mode 1 and NR mode 2 share the resource pool. Pool sharing can result in a more efficient use of the resources, but it is prone to potential collisions between NR mode 1 and NR mode 2 transmissions.
  • NR mode 1 UEs notify NR mode 2 UEs of the resources allocated for their future transmissions.
  • NR mode 1 uses dynamic grant (DG) scheduling like LTE V2X mode 3, but replaces the semi-persistent scheduling in LTE V2X mode 3 with a configured grant scheduling.
  • DG dynamic grant
  • NR mode 1 UEs must request resources to the base station for the transmission of every single TB.
  • the UEs must send a Scheduling Request (SR) to the gNB, and the gNB responds by indicating the SL resources, i.e. , the slot(s) and sub-channel(s), allocated for the transmission of a TB and up to 2 possible retransmissions of this TB.
  • SR Scheduling Request
  • the UE informs other UEs about the resources it will use to transmit a TB and up to 2 possible retransmissions using the 1st-stage SCI messages. Nearby UEs operating under NR mode 2 can then know which resources UEs in NR mode 1 will utilize.
  • UEs can autonomously select their SL resources from a resource pool, i.e., one or several sub-channels. In this case, UEs can operate without network coverage.
  • the resource pool can be (pre-)configured by the gNB when the UE is in network coverage.
  • NR mode 2 and LTE mode 4 differ on the scheduling scheme.
  • LTE mode 4 operates following a sensing-based SPS scheme, while NR mode 2 can operate using a dynamic or an SPS scheme that differs from the one designed for LTE mode 4.
  • the dynamic scheme selects new resources for each TB and can only reserve resources for the retransmissions of that TB.
  • a reserved resource is a selected resource that a UE reserves for a future transmission by notifying neighbouring UEs using the 1st-stage SCI messages.
  • a UE can select and reserve resources for the transmission of several TBs and their retransmissions when utilizing the SPS scheme. It is important to note that the SPS scheme can be enabled or disabled in a resource pool by corresponding (pre-)configuration.
  • Radio apparatus or user equipment (UE), communicating either in accordance with the 4G LTE standard or the 5G NR standard may be within a common radio range and require SL communication.
  • LTE and NR may use identical portions of the available resources, i.e. , may operate on the same frequencies or on at least partially overlapping frequency bands wireless apparatus operating in accordance with either one of the standards may try to transmit at the same time within these mutually used frequencies or frequency bands. The resulting colliding access to the same resource can only be avoided by coordinating access to the commonly used resources.
  • LTE and NR radio access (RA) mechanisms are incompatible, even when the messages required for the RA are transmitted on the same frequency.
  • RA radio access
  • FIG. 3 a schematically shows an example of a rigid resource allocation scheme.
  • resource pools are exclusively allocated within the resource to communication in accordance with one of the two communication standards.
  • the light dotted background represents the commonly used resource, i.e. , the channel over time, and the reservations for the different communication standards are indicated by the different hashing. Note that there may or may not be unused spaces between the different resource pool reservations, and that the respective reserved resource pools may have varying lengths and widths, i.e., numbers of contiguous sub-channels.
  • the resource allocation is rigid, i.e., fixed, it can be known beforehand in all UEs that operate in accordance with a respective standard.
  • the rigid resource allocation cannot consider different compositions of the respective UEs within the same radio range, i.e., cannot consider cases in which more UEs that communicate in accordance with a first standard are present that those that communicate in accordance with a second standard, and cannot easily be adjusted once implemented in the UEs.
  • resources in pools reserved for communication in accordance with one standard may go unused, while the resources for communication in accordance with the other standard are insufficient.
  • Figure 3 b) exemplarily shows overlapping resource pools, where some of the resources intended for communicating in accordance with one standard are used for communication in accordance with the other standard.
  • the resources used for communication in accordance with the overlapping standard are exclusively reserved for this use.
  • This ‘pool occupation’ will still require some coordination, and may still show inefficiencies, e.g., when the ‘occupied’ part of the pool is not fully used for communication in accordance with the occupying standard, but could have been used for communication in accordance with the other standard.
  • an object of the present invention to provide methods of coordinating and/or providing, within a given area, access to shared resources by UEs communicating in accordance with otherwise incompatible communication standards, in situations in which network coverage of at least one of the mutually incompatible types is not provided, and in which at least one dual mode UE may be present in the given area, which at least one dual mode UE comprises respective network interfaces for communicating in accordance with each one of the mutually incompatible communication standards.
  • Figure 4 depicts an exemplary LTE resource pool structure showing, inter alia, reserved or allocated resource elements and available resource elements for an adjacent resource assignment and a nonadjacent resource assignment in the physical SL control channel (PSCCH) and the physical SL shared channel (PSSCH).
  • Adjacent and nonadjacent refers to the way the transport blocks (TB) are arranged across the subchannels.
  • the present invention presented hereinafter addresses at least some of the problems discussed above by introducing at least partially overlapping resource pools in which the overlapping part is used shared by UEs communicating in accordance with respective non-interoperable communication standards, and by introducing methods of coordinating access at least to the shared resource pools.
  • Figure 5 shows a schematic example for overlapping resource pools in a frequency channel used for co-channel co-existence, where an overlapping part or portion is used shared. This is possible without causing any problem when not all of the resource elements in the shared part or portion of the resource pools are already fully assigned for communication in accordance with one of the standards, which may have priority access. This situation, i.e. , the shared part not being fully assigned for use, may occur more often than not, and the methods proposed herein exploit the resulting opportunity for increasing the use of the radio resource.
  • RA coordination trouble may arise in scenarios in which UEs exclusively capable of communicating in accordance with the a first standard (UE-A), e.g., the 4G LTE standard, and UEs capable of communicating in accordance with a second standard (UE-B), e.g., the 5G NR standard, are located in areas that have a first standard-only or second standard-only network coverage, e.g., LTE-only or NR-only.
  • UE-A e.g., the 4G LTE standard
  • UE-B e.g., the 5G NR standard
  • a network-controlled resource allocation will not be known to all UEs within the area of first or second standard-only network coverage, as the resource allocation by the first standard NB is not received or understood by a second standard-only IIE-B, and the resource allocation by a second standard NB is not received or understood by a first standard-only IIE-A.
  • the respective UEs that cannot benefit from the network-controlled resource allocation will resort to UE-controlled resource allocation. Since the two resource allocation schemes are not mutually coordinated, allocated resource pools may at least partially overlap, which may result in disturbed or even failed communication attempts due to signal interference.
  • first standard-only IIE-A, second standard-only IIE-B and dual mode IIE-C are located.
  • the IIE-A are represented by the vehicle with the circle with the vertical hashing
  • the IIE-B are represented by the vehicle with the circle with the horizontal hashing
  • the IIE-C are represented by the vehicle with the circle with the cross-hashing.
  • the LTE network represented by the radio tower icon labelled eNB, can only allocate resources to the UE-B and the LTE wireless interface of the UE-C, indicated by the arrows.
  • the UE-A will not have knowledge of the resource allocation through the LTE eNB, again indicated by the question marks, and will resort to UE-controlled resource allocation performed by the UE-A, which may result in at least partially overlapping resource pools and/or assigned resources.
  • the IIE-A are represented by the vehicle with the circle with the vertical hashing and the IIE-B are represented by the vehicle with the circle with the horizontal hashing. Since no network is available for coordinating radio access, both the IIE-A and the IIE-B independently perform UE-controlled resource allocation. In this scenario it is assumed that either IIE-A or IIE-B is capable of receiving and understanding at least the resource reservation in accordance with the respective other communication standard. In the figure IIE-B has such capability.
  • the IIE-A have no knowledge of the allocation agreed to by the IIE-B, indicated by the question marks, while the IIE-B do have knowledge of the allocation agreed to by the IIE-A, indicated by the exclamation marks. In any case, this leaves one or more UEs without a full knowledge of the actual use of the shared resource, which can lead to communication problems.
  • the IIE-B and the NR part of the IIE-C send their respective reservation requests to the NR gNB together with the reservation for the respective LTE part of the UE-C, using the NR Uu uplink interface.
  • the NR gNB assigns resources to the UE-B and to the respective NR parts of the UE-C, respecting the LTE reservations.
  • the NR gNB sends a downlink broadcast indicating the resources within the Class C, which are available in a future window.
  • the UE-B receive their resource allocation in the normal way.
  • the gNB’s broadcast signal is received and decoded by the NR part of the UE-C. 4.
  • the NR part of the IIE-C then transfers the decoded message, i.e. , the available resources in Class C, to the LTE part of the IIE-C using an intra-UE coordination message.
  • the LTE part of the IIE-C then sends a “coordinated” resource reservation information to the IIE-A and the LTE part of other UE-C within radio range, in a way as stipulated in the LTE standard, thus identifying available or not reserved resources in Class A.
  • the UE-A will be aware of the reservation performed in step 5 as this will be broadcast by the LTE part of the UE-C, and the UE-A will select or reserve resources accordingly, as stipulated in LTE mode 4.
  • the UE-A and the LTE part of UE-C send their reservation requests to the LTE eNB, using the LTE Uu uplink interface.
  • the LTE eNB assigns resources to the UE-A and to the LTE part of the UE-C.
  • the LTE eNB sends a downlink broadcast indicating the resources within the Class C, which are available in a future window.
  • the UE-A receive their resource allocation in the normal way.
  • the LTE eNB’s broadcast signal is received and decoded by the LTE part of the UE-C. 4.
  • the LTE part of the IIE-C then transfers the decoded message, i.e. , the available resources in Class C, to the NR part of the IIE-C using an intra-UE coordination message.
  • the NR part of the IIE-C then sends the relevant resource allocation information, i.e., available or not-assigned resources in Class C to the IIE-B within radio range, e.g., using a sidelink broadcast message or via SCI phase 1 .
  • IIE-B in accordance with NR release 18 perform a conventional resource reservation in accordance with the 5G NR standard, i.e., using Class B with highest priority and Class C with lowest priority.
  • Legacy IIE-B i.e., in accordance with NR release 16 or 17 will be aware of the reservation performed in step 6 as this will be broadcast by the NR part of the IIE-C, and they will select or reserve resources accordingly.
  • steps 4 and 5 may not be required for these UE-B.
  • UE-A and the LTE part of UE-C make and/or announce their reservation in Class A, without assuming any prioritization.
  • the NR part of UE-C gets this information, e.g., via internal data transfer from the LTE part or, if capable thereof, by directly listening to LTE resource reservation messages, and broadcasts the intended reservation of the IIE-A and the LTE part of the UE-C, using a broadcast message which is received by all IIE-B and IIE-C.
  • IIE-B and UE-C take into consideration this information and try to get resources in the coordinated part, i.e. , in Class C.
  • Legacy UE-B i.e., those not capable of sharing resources in Class C, select and/or reserve resources in Class B.
  • UE-A make and/or announce their reservation in Class A, without assuming any prioritization.
  • UE-B gets this information and broadcasts the intended reservation of the UE-A, using a broadcast message which is received by all UE-B.
  • UE-B take into consideration this information and try to get resources in the coordinated part, i.e., in Class C.
  • Legacy UE-B i.e., those not capable of sharing resources in Class C, select and/or reserve resources in Class B.
  • non-legacy IIE-B are preferably configured to prioritize resources in Class C over resources in Class B for communication with non-legacy IIE-B, while communication with or between legacy IIE-B preferably uses resources in Class B.
  • Legacy IIE-B may include, e.g., 5G NR UEs earlier than those complying with 5G NR release 18, i.e. , complying with 5G NR releases 16 or 17.
  • a method of coordinating access of at least one first-type apparatus comprising a first-type wireless interface, at least one second-type apparatus comprising a second-type wireless interface, and at least one third type apparatus comprising both a first-type wireless interface and a second-type wireless interface that are communicatively coupled to each other, to radio resources is presented, parts or portions of which radio resources being at least partly and/or temporarily used shared between the first-type, second- type and third-type apparatus.
  • the first-type and second-type wireless communication interfaces are not interoperable.
  • the expression partly shared may be interpreted as relating to the simultaneous, respectively exclusive use of channels, sub-channels, time slots or resource elements of the radio resources for communications via wireless interfaces of the first and second type.
  • the resource elements may comprise physical resource blocks, channels, sub-channels, or groups thereof, and may further comprise time slots, or any combination of any of the aforementioned elements.
  • the method comprises, in the third-type apparatus, receiving a resource allocation response assigning resource elements in the at least partly and/or temporarily shared parts or portions of the future radio resources and/or in parts or portions of the future radio resources that are exclusive to or reserved for use by first-type apparatus or by first-type interfaces of third-type apparatus, or receiving an announcement pertaining to reserved resource elements in said shared or exclusive parts or portions of the future radio resources, and/or obtaining first information indicating at least resource elements within the at least partly and/or temporarily shared parts or portions of the future radio resources that are available or not assigned.
  • the announcement and/or the obtained first information indicating at least available or not assigned resource elements a second information is generated that permits identifying at least the available or not-assigned resource elements within the at least partly and/or temporarily shared parts or portions of the future radio resources.
  • the second information is then transmitted, via the second-type wireless interface of the third-type apparatus, to any second-type wireless interface within radio range. Transmitting the second information may be effected, e.g., via an SL broadcast message or an SCI Phase 1 message in case the second-type wireless interface operates in accordance with the 5G NR standard, or via an LTE resource reservation information in case the second-type wireless interface operates in accordance with the 4G LTE standard.
  • the second information may comprise a bitmap of the shared resource elements, showing the resource elements or groups thereof that are available or not assigned, or the inverse thereof, i.e., the unavailable or assigned ones.
  • Receiving a resource allocation response may comprise receiving such response from a base station of a network configured for communication with first-type wireless interfaces.
  • Obtaining first information may comprise obtaining such information from the base station, e.g., in a downlink broadcast, or by other means or protocol provided in a respective standard that stipulates communication over and/or control of first-type wireless interfaces.
  • Receiving an announcement may comprise receiving such announcement from one or more first-type apparatus or from first-type interfaces of third-type apparatus.
  • the second-type wireless interface may be configured to directly receive such resource allocation response, and to extract relevant information in electronic circuitry associated with the second-type wireless interface. Otherwise, the resource allocation response is received by the first-type wireless interface and is internally, i.e., within the third-type apparatus, transferred to electronic circuitry for generating the second information, which is then transmitted. If received in coded form, the received information may be decoded in electronic circuitry associated with the first-type wireless interface prior to being internally transferred.
  • electronic circuitry associated with the first-type wireless interface may have common elements with the electronic circuitry associated with the second-type wireless interface, e.g., when the actual function of the electronic circuitry associated with the first-type or second-type wireless interface is implemented as computer program instructions, these may be executed by the same physical microprocessor or physical or logical core thereof, using the same physical volatile memory.
  • electronic circuitry of the third-type apparatus performs, prior to receiving a resource allocation response, resource reservation, through the base station of a network configured for communication with first-type wireless interfaces, targeting any resource element within a part or portion of the future radio resources provided for communication via first-type wireless interfaces.
  • resource reservation may include resource elements within the at least partly and/or temporarily shared parts or portions of the future radio resources, and may further include resource elements in parts or portions of the future radio resources that are exclusive to or reserved for use by first-type apparatus or by first-type wireless interfaces of third-type apparatus.
  • electronic circuitry associated with the first-type wireless interface performs, prior to receiving a resource allocation response and to obtaining first information, resource reservation, through the base station of a network configured for communication with first-type wireless interfaces, targeting any resource element within a part or portion of the future radio resources provided for communication via first-type wireless interfaces and within the at least partly and/or temporarily shared parts or portions of the future radio resources, and further including, in the resource reservation, a resource pre-reservation targeting resource elements in parts or portions of the future radio resources that are reserved for use by second-type apparatus or by second-type wireless interfaces of third-type apparatus and/or targeting resource elements within the at least partly and/or temporarily shared parts or portions of the future radio resource.
  • electronic circuitry associated with the first-type wireless interface prior to receiving an announcement, makes or announces a reservation within a part or portion of the future radio resources provided for communication via first-type wireless interfaces.
  • the electronic circuitry associated with the first-type wireless interface or with the second-type wireless interface, or both may comprise, inter alia, one or more microprocessors, associated volatile and non-volatile memory, and may execute computer program instructions, stored in the non-volatile memory, that execute decoding, coding, inter-apparatus sharing of information, and/or control of physical elements of wireless interfaces or other elements of the apparatus it is provided in.
  • a method of allocating radio resource elements to first-type apparatus comprising a first-type wireless interface, second-type apparatus comprising a second-type wireless interface, and at least one third type apparatus comprising both a first-type wireless interface and a second-type wireless interface that are communicatively coupled to each other, to parts or portions of future radio resources, of which parts or portions are at least partly and/or temporarily used shared by the first-type, second-type and third-type apparatus.
  • the first-type and second-type wireless communication interfaces are not interoperable.
  • the expression partly shared may be interpreted as relating to the simultaneous, respectively exclusive use of channels, sub-channels or resource elements of the radio resource within the time interval for communications via wireless interfaces of the first and second type.
  • the resource elements may comprise physical resource blocks, channels, sub-channels, or groups thereof, and may further comprise time slots, or a combination thereof.
  • the method comprises, in an apparatus of a network infrastructure configured for communication with first- type wireless interfaces, e.g., a base station or a network controller, receiving, from one or more first-type apparatus and/or one or more third type apparatus, reservation requests targeting at least resource elements in shared parts or portions of the future radio resources.
  • resource elements are assigned.
  • the assigned resource elements are transmitted to the one or more first-type apparatus or first-type wireless interfaces of the third-type apparatus through resource allocation responses in accordance with the appropriate communication standard.
  • information indicating resource elements within the at least partly and/or temporarily shared parts or portions of the future radio resources that are available or not assigned for use by first-type apparatus or by first-type interfaces of third-type apparatus is sent to the one or more first-type apparatus or first-type wireless interfaces of the third-type apparatus, e.g., through a downlink broadcast message.
  • receiving further comprises receiving, from one or more first-type apparatus and/or first-type wireless interfaces of one or more third type apparatus, reservation requests targeting resource elements in parts or portions of the future radio resources that are exclusive to or reserved for use by first-type apparatus or by first-type interfaces of third-type apparatus.
  • receiving further comprises receiving, from one or more first-type wireless interfaces of one or more third type apparatus, pre-reservations for a second-type wireless interface of said third-type apparatus targeting resource elements in parts or portions of the future radio resources that are generally accessible for use by second-type apparatus or by second-type interfaces of third- type apparatus.
  • Pre-reservations may indicate resource elements that the second- type wireless interface has reserved during a preceding autonomous resource reservation process, unbeknownst to the first-type interface, or that it intends to reserve during a subsequent autonomous resource reservation process.
  • Generally accessible may be interpreted as comprising any resource element from the radio resource that can normally be reserved in accordance with communication via the second communication interface, including source elements that are part of parts or portions radio resource time intervals which are used shared for communication via first-type wireless interfaces.
  • This embodiment of the method further comprises identifying, in the pre-reservations, those resource elements arranged in shared parts or portions of the future radio resources.
  • the pre-reservations targeted to resource elements arranged in shared parts or portions of the future radio resources that were previously identified are respected or considered in the assigning step.
  • the methods according to the invention presented herein improve the co-existence of mutually incompatible wireless communication systems in the presence of dualmode UEs, by making resource reservations for apparatus or wireless interfaces operating in accordance with the first communication standard and/or information about available or not-assigned resource elements available to apparatus or wireless interfaces operating in accordance with the respective other communication standard via the dual-mode UEs.
  • LTE group reservation is prioritized, which is either available to UEs in compliance with NR Release 18 and later, which are assumed to be able to receive and decode LTE resource reservation, or through intra-UE information sharing in dual-mode UEs.
  • the methods presented herein are backwardcompatible with existing resource reservation and allocation schemes and provide semi-persistent and dynamic resource sharing between two otherwise not- interoperable communication standards.
  • a computer program product comprises computer program instructions which, when executed by a microprocessor of a wireless apparatus, communication device or network component cause the microprocessor to execute methods in accordance with one or more of the methods of the present invention presented herein, and to accordingly control hardware and/or software blocks or modules of the wireless apparatus, communication device or network component in accordance with the invention as likewise presented herein.
  • the computer program instructions may be retrievably stored or transmitted on a computer-readable medium or data carrier.
  • the medium or the data carrier may by physically embodied, e.g., in the form of a hard disk, solid state disk, flash memory device or the like.
  • the medium or the data carrier may also comprise a modulated electro-magnetic, electrical, or optical signal that is received by the computer by means of a corresponding receiver, and that is transferred to and stored in a memory of the computer.
  • the present invention can be used with great advantage in all communication scenarios in which communication in accordance with mutually non-interoperable standards occurs in the same or at least overlapping resources, e.g., frequency channels.
  • a particularly useful application of the invention is the side link communication in vehicle-to-X (V2X) communication scenarios in the ITS frequency spectrum.
  • Fig. 2 schematically illustrates the concept of resource pools
  • Fig. 3 shows examples of overlapping resource pools in a channel used by two otherwise not-interoperable radio access technologies
  • Fig. 4 depicts an exemplary LTE resource pool structure showing, inter alia, reserved or allocated resource elements and available resource elements for an adjacent resource assignment and a nonadjacent resource assignment in the physical SL control channel (PSCCH) and the physical SL shared channel (PSSCH),
  • PSCCH physical SL control channel
  • PSSCH physical SL shared channel
  • Fig. 6 shows exemplary representations of situations addressed by the present invention in the presence of at least one radio access network
  • Fig. 7 shows exemplary representations of situations addressed by the present invention when no radio access network is present
  • Fig. 8 shows an exemplary message flow of a first implementation of the methods in accordance with the present invention
  • Fig. 9 shows an exemplary message flow of a second implementation of the methods in accordance with the present invention
  • Fig. 10 shows an exemplary message flow of a third implementation of the methods in accordance with the present invention.
  • Fig. 11 shows an exemplary message flow of a fourth implementation of the methods in accordance with the present invention.
  • Fig. 12 shows an exemplary schematic block diagram of a wireless apparatus or communication device in accordance with the present invention
  • Fig. 13 shows an exemplary schematic block diagram of a network component in accordance with the present invention.
  • Fig. 14 shows the main steps of the methods in accordance with the first and the second aspect of the invention in relation to each other, further showing message exchanges between them.
  • FIG. 12 shows an exemplary schematic block diagram of a wireless apparatus or communication device 400 in accordance with a third aspect of the present invention.
  • the wireless apparatus or communication device 400 comprises one or more antennas 402 and associated wireless interface circuitry 456, providing at least one first-type communication interface and one second-type communication interface, for communicating with one or more further wireless apparatus or communication devices or a network component 500 (not shown in the figure), one or more microprocessors 450, volatile memory 452 and non-volatile memory 454.
  • the aforementioned elements are communicatively connected via one or more signal or data connections or buses 458.
  • the non-volatile memory 454 stores computer program instructions which, when executed by the microprocessor 450, cause the wireless apparatus or communication device 400 to execute the method according to first aspect of the invention as presented hereinbefore.
  • Figure 13 shows an exemplary schematic block diagram of a network component 500 in accordance with the present invention.
  • the network component 500 comprises one or more microprocessors 450, volatile memory 452, non-volatile memory 454, and a first-type or second-type wireless interface 404 for communicating with one or more wireless apparatus or communication devices 400 in accordance with the third aspect of the present invention (not shown in the figure).
  • the aforementioned elements are communicatively connected via one or more signal or data connections or buses 458.
  • the non-volatile memory 454 stores computer program instructions which, when executed by the microprocessor 450, cause the network component 500 to execute the method according to the second aspect of the invention as presented hereinbefore.
  • Figure 14 shows the main steps of the methods 100 and 200 in accordance with the first and the second aspect of the invention, respectively, in relation to each other, further showing message exchanges between them.
  • the UE performs a resource reservation of future resources for use by a first-type wireless interface IF1 and transmits a corresponding request to the NB.
  • the NB optionally identifies, in step 220, resource elements arranged in shared parts or portions of the future radio resources, from pre-reservations for a second-type wireless interface IF2 received along with the resource reservation request.
  • the NB assigns resource elements in accordance with the requests and optionally considering the pre-reservations.
  • step 240 responses to the resource allocation for the first-type wireless interface IF1 are transmitted, which are received, in step 120, by the UE.
  • the NB sends first information indicating resource elements within the at least partly and/or temporarily shared parts or portions of the future radio resources that are available or not assigned for use by first-type wireless interface IF1 , which are received by the UE in step 130.
  • the UE generates, based on the first information, second information permitting identifying at least the available or not-assigned resource elements within the at least partly and/or temporarily shared parts or portions of the future radio resources, which is transmitted in step 150.
  • LIST OF REFERENCE NUMERALS PART OF THE DESCRIPTION

Landscapes

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

Abstract

L'invention concerne un procédé de coordination de l'accès d'au moins un appareil de premier type comprenant une interface sans fil de premier type, d'au moins un appareil de deuxième type comprenant une interface sans fil de deuxième type, et d'au moins un appareil de troisième type comprenant à la fois une interface sans fil de premier type et une interface sans fil de deuxième type qui sont couplées en communication l'une avec l'autre, à une ressource radio, des parties ou des portions de cette ressource radio dans ledit intervalle de temps étant au moins partiellement et/ou temporairement utilisées et partagées entre les appareils de premier type, de deuxième type et de troisième type. Les interfaces de communication sans fil du premier type et du deuxième type ne sont pas interopérables. Le procédé propose, dans les UE à double mode, de distribuer des informations sur les réservations de ressources pour les interfaces sans fil de premier type et les interfaces sans fil de deuxième type aux UE à mode unique utilisant des interfaces sans fil de l'autre type respectif.
EP23758387.7A 2022-08-05 2023-08-04 Procédé de coordination de la communication de deux systèmes de communication non interopérables utilisant une ressource au moins partiellement partagée Pending EP4552302A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SG10202250680W 2022-08-05
PCT/IB2023/057907 WO2024028828A1 (fr) 2022-08-05 2023-08-04 Procédé de coordination de la communication de deux systèmes de communication non interopérables utilisant une ressource au moins partiellement partagée

Publications (1)

Publication Number Publication Date
EP4552302A1 true EP4552302A1 (fr) 2025-05-14

Family

ID=87762681

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23758387.7A Pending EP4552302A1 (fr) 2022-08-05 2023-08-04 Procédé de coordination de la communication de deux systèmes de communication non interopérables utilisant une ressource au moins partiellement partagée

Country Status (3)

Country Link
EP (1) EP4552302A1 (fr)
CN (1) CN119654851A (fr)
WO (1) WO2024028828A1 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114401530B (zh) * 2018-08-06 2025-03-11 维沃移动通信有限公司 多模通信方法、终端和网络侧设备
WO2020033628A1 (fr) * 2018-08-08 2020-02-13 Idac Holdings, Inc Sélection et commande de ressource de liaison latérale

Also Published As

Publication number Publication date
CN119654851A (zh) 2025-03-18
WO2024028828A1 (fr) 2024-02-08

Similar Documents

Publication Publication Date Title
JP7783185B2 (ja) Ｖ２ｘシステムで端末の間の協力を通じるリソース割り当て方法及び装置
JP7419358B2 (ja) グループ通信のためのリソースプールの設計
US10834751B2 (en) Method and apparatus for delivering time-critical message between devices belonging to different cells in wireless communication system
US20210212025A1 (en) Radio sidelink frame structure
US12538357B2 (en) Systems and techniques for sidelink communication
CN110870375B (zh) 运行网络基础设施侧网络单元的方法、网络基础设施侧网络单元、运行道路侧网络单元的方法、道路侧网络单元
CN107736062B (zh) 网络辅助d2d通信的设备与方法
WO2021063297A1 (fr) Détermination de ressources de rétroaction à partir d'un canal partagé de liaison latérale
US20240205948A1 (en) Sidelink, sl, interlacing configurations
US12395967B2 (en) System and method for sidelink configuration
CN115843115A (zh) 侧行通信的方法及装置
US20250247866A1 (en) Sharing of channel occupancy time by user devices for a sidelink communication in an unlicensed spectrum
CN110915279B (zh) 网络基础设施侧网络单元、道路侧网络单元及其运行方法
US20250226941A1 (en) Sidelink positioning in unlicensed band
US20260082438A1 (en) Methods of controlling an operation of a wireless interface
EP4552302A1 (fr) Procédé de coordination de la communication de deux systèmes de communication non interopérables utilisant une ressource au moins partiellement partagée
CN120266506A (zh) 用于设备到设备通信的方法和系统
JP2025513318A (ja) サイドリンク通信を実行する方法
CN107787593B (zh) 用于通信的帧结构、通信设备和方法
EP4573770A1 (fr) Procédé de réduction ou d'élimination d'interférence entre deux systèmes de communication non interopérables accédant à une ressource au moins partiellement partagée
CN116134879B (zh) 降低直接无线通信系统中的功耗
US20260067703A1 (en) Channel access blocking reduction for a sidelink communication on resources of an unlicensed spectrum
CN115211212B (zh) 侧链路传输系统中的资源分配
WO2022073455A1 (fr) Réduction de consommation d'énergie dans des systèmes de communication sans fil directs
CN121532993A (zh) 基于冲突检测的sps资源重选

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20250207

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: AUMOVIO GERMANY GMBH

Owner name: NANYANG TECHNOLOGICAL UNIVERSITY