WO2024077606A1 - Établissement de trajet indirect rapide pour un équipement utilisateur de liaison latérale à un relais de réseau - Google Patents

Établissement de trajet indirect rapide pour un équipement utilisateur de liaison latérale à un relais de réseau Download PDF

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Publication number
WO2024077606A1
WO2024077606A1 PCT/CN2022/125422 CN2022125422W WO2024077606A1 WO 2024077606 A1 WO2024077606 A1 WO 2024077606A1 CN 2022125422 W CN2022125422 W CN 2022125422W WO 2024077606 A1 WO2024077606 A1 WO 2024077606A1
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WIPO (PCT)
Prior art keywords
user equipment
relay user
relay
container
network element
Prior art date
Application number
PCT/CN2022/125422
Other languages
English (en)
Inventor
Ling Yu
Vinh Van Phan
Faranaz SABOURI-SICHANI
Xiang Xu
Berthold PANZNER
Stepan Kucera
Ravi Prasad R K
György Tamás Wolfner
Original Assignee
Nokia Shanghai Bell Co., Ltd.
Nokia Solutions And Networks Oy
Nokia Technologies Oy
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.)
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Publication date
Application filed by Nokia Shanghai Bell Co., Ltd., Nokia Solutions And Networks Oy, Nokia Technologies Oy filed Critical Nokia Shanghai Bell Co., Ltd.
Priority to PCT/CN2022/125422 priority Critical patent/WO2024077606A1/fr
Publication of WO2024077606A1 publication Critical patent/WO2024077606A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • Some example embodiments may generally relate to communications including mobile or wireless telecommunication systems, such as Long Term Evolution (LTE) or fifth generation (5G) radio access technology or new radio (NR) access technology, or other communications systems including subsequent generations of the same or similar standards.
  • LTE Long Term Evolution
  • 5G fifth generation
  • NR new radio
  • certain example embodiments may generally relate to setting up an indirect path as an additional path in cases where a relay user equipment may be in idle or inactive state, such as radio resource control idle/inactive state.
  • Examples of mobile or wireless telecommunication systems may include the Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (UTRAN) , Long Term Evolution (LTE) Evolved UTRAN (E-UTRAN) , LTE-Advanced (LTE-A) , MulteFire, LTE-APro, and/or fifth generation (5G) radio access technology or new radio (NR) access technology.
  • 5G wireless systems refer to the next generation (NG) of radio systems and network architecture.
  • a 5G system is mostly built on a 5G new radio (NR) , but a 5G (or NG) network can also build on the E-UTRA radio. From release 18 (Rel-18) onward, 5G is referred to as 5G advanced.
  • NR provides bitrates on the order of 10-20 Gbit/sor higher, and can support at least service categories such as enhanced mobile broadband (eMBB) and ultra-reliable low-latency-communication (URLLC) as well as massive machine type communication (mMTC) .
  • eMBB enhanced mobile broadband
  • URLLC ultra-reliable low-latency-communication
  • mMTC massive machine type communication
  • NR is expected to deliver extreme broadband and ultra-robust, low latency connectivity and massive networking to support the Internet of Things (IoT) .
  • IoT and machine-to- machine (M2M) communication With IoT and machine-to- machine (M2M) communication becoming more widespread, there will be a growing need for networks that meet the needs of lower power, low data rate, and long battery life.
  • the next generation radio access network (NG-RAN) represents the RAN for 5G, which can provide both NR and LTE (and LTE-Advanced) radio accesses.
  • the nodes that can provide radio access functionality to a user equipment may be named next-generation NB (gNB) when built on NR radio and may be named next-generation eNB (NG-eNB) when built on E-UTRA radio.
  • gNB next-generation NB
  • NG-eNB next-generation eNB
  • An embodiment may be directed to an apparatus.
  • the apparatus may include at least one processor and at least memory storing instructions.
  • the instructions when executed by the at least one processor, may cause the apparatus at least to perform receiving, from a network element, a configuration of a relay user equipment container related to an addition to, or modification of, an indirect path between the apparatus and the network element.
  • the instructions when executed by the at least one processor, may also cause the apparatus at least to perform indicating the relay user equipment container to a relay user equipment.
  • An embodiment may be directed to an apparatus.
  • the apparatus may include at least one processor and at least memory storing instructions.
  • the instructions when executed by the at least one processor, may cause the apparatus at least to perform receiving a relay user equipment container from a remote user equipment.
  • the instructions when executed by the at least one processor, may also cause the apparatus at least to perform connecting to a network element based on the relay user equipment container to provide an indirect path for the remote user equipment.
  • An embodiment may be directed to an apparatus.
  • the apparatus may include at least one processor and at least memory storing instructions.
  • the instructions when executed by the at least one processor, may cause the apparatus at least to perform configuring a remote user equipment with a relay user equipment container related to an addition to, or modification of, an indirect path between the remote user equipment and the apparatus.
  • the instructions when executed by the at least one processor, may also cause the apparatus at least to perform receiving confirmation of delivery of the relay user equipment container to a relay user equipment.
  • An embodiment may be directed to a method.
  • the method can include receiving, at a user equipment from a network element, a configuration of a relay user equipment container related to an addition to, or modification of, an indirect path between the user equipment and the network element.
  • the method can also include indicating the relay user equipment container to a relay user equipment.
  • An embodiment may be directed to a method.
  • the method can include receiving, at a user equipment, a relay user equipment container from a remote user equipment.
  • the method may also include connecting to a network element based on the relay user equipment container to provide an indirect path for the remote user equipment.
  • An embodiment may be directed to a method.
  • the method can include configuring a remote user equipment with a relay user equipment container related to an addition to, or modification of, an indirect path between the remote user equipment and a network element.
  • the method may also include receiving confirmation of delivery of the relay user equipment container to a relay user equipment.
  • An embodiment can be directed to an apparatus.
  • the apparatus can include means for receiving, from a network element, a configuration of a relay user equipment container related to an addition to, or modification of, an indirect path between the apparatus and the network element.
  • the apparatus can also include means for indicating the relay user equipment container to a relay user equipment.
  • An embodiment can be directed to an apparatus.
  • the apparatus can include means for receiving a relay user equipment container from a remote user equipment.
  • the apparatus can also include means for connecting to a network element based on the relay user equipment container to provide an indirect path for the remote user equipment.
  • An embodiment can be directed to an apparatus.
  • the apparatus can include means for configuring a remote user equipment with a relay user equipment container related to an addition to, or modification of, an indirect path between the remote user equipment and the apparatus.
  • the apparatus can also include means for receiving confirmation of delivery of the relay user equipment container to a relay user equipment.
  • FIG. 1 illustrates targeted multi-path for a remote user equipment
  • FIG. 2 illustrates a signaling flow of a method according to certain embodiments
  • FIG. 3 illustrates a radio resource control setup message
  • FIG. 4 illustrates an example block diagram of a system, according to an embodiment.
  • Certain embodiments may have various aspects and features. These aspects and features may be applied alone or in any desired combination with one another. Other features, procedures, and elements may also be applied in combination with some or all of the aspects and features disclosed herein.
  • Certain embodiments relate to support of multi-path (MP) for user equipment (UE) in which one path is using new radio (NR) sidelink (SL) based layer two (L2) UE-to-Network (U2N) relay, also referred to as an indirect path, and the other path is using direct Uu access, also referred to as a direct path.
  • MP multi-path
  • UE user equipment
  • SL sidelink
  • L2N layer two
  • U2N UE-to-Network
  • multi-path with U2N relay or UE aggregation may improve the throughput and reliability or robustness of a communication, for example, for UEs at the edge of a cell, and UEs with limited uplink (UL) transmission power.
  • MP for UE may refer instead to an intentionally created situation in which there are different signals providing a communication link (s) to a user equipment through different transmission paths.
  • the present discussion focuses on MP for UE rather than on signal reflection and related signal interference/fading issues.
  • FIG. 1 illustrates targeted multi-path for a remote user equipment.
  • NW network
  • gNB next generation Node
  • MP management can include decision on setup of MP, selection of relay UE for indirect path, configuration of indirect path, or the like.
  • Certain embodiments relate to the scenario as illustrated in FIG. 1, where the UE has already established at least the direct path with the serving gNB.
  • the gNB can determine in addition to the established direct path to add a new or modify an existing indirect path, the dotted path in FIG. 1, via a selected relay UE, where the relay UE can be in RRC idle or inactive state before the indirect path via the relay UE for the remote UE is established.
  • the gNB may identify that the direct path cannot meet the throughput or reliability requirements of the remote UE’s service traffic, for example based on the gNB’s own measurement and/or measurement reports from the remote UE.
  • the serving gNB of the remote UE may determine to add or modify the indirect path via the selected relay UE. It may be beneficial to set up the indirect path as soon as possible in order to maintain good quality of service (QoS) for the remote UE’s service.
  • QoS quality of service
  • the relay UE in RRC idle/inactive state may be triggered by the remote UE over sidelink (SL) or PC5 to set up the relay UE’s own RRC connection with the serving gNB. Only after the relay UE enters RRC connected state, the remote UE’s indirect path can be set up, using this example mechanism.
  • the total RRC connection establishment procedure latency may be between 70 –80 ms for the direct connection establishment between UE and the serving gNB and 50 ms with latency improvement features described in third generation partnership project (3GPP) technical specification (TS) 36.912.
  • indirect path establishment in MP scenario may be delayed at least for tens of milliseconds if a relay UE is in RRC idle/inactive state. This may not be acceptable when a remote UE’s service has a guaranteed bit rate or an expectation of high reliability and low latency.
  • Certain embodiments provide a way to set up the indirect path as the second path in a fast and efficient way when the indirect path is configured via the relay UE in RRC idle/inactive state.
  • certain embodiments can utilize the existing direct path between the remote UE and the serving gNB to facilitate a fast and efficient RRC connection establishment for the relay UE (s) in RRC idle/inactive state when the indirect path is added or modified utilizing a new relay UE.
  • the remote UE can be configured by a network element, such as a gNB or any other access node.
  • the remote UE can be configured with the relay UE RRC connection configuration container, which can be referred to as a relay UE container.
  • the relay UE container can provide the RRC reconfiguration parameters related to addition or modification of the indirect path.
  • the relay UE container may include configuration for the relay UE as would otherwise be included in an RRCSetup message such as, but not limited to, Uu signaling radio bearer 1 (SRB1) configuration, PC5 configuration of SRB1 message, and optional cell radio network temporary identifier (C-RNTI) .
  • the PC5 configuration can include sidelink relay adaptation protocol (SRAP) , radio link control (RLC) -channel, medium access control (MAC) and physical layer (PHY) configuration.
  • SRAP sidelink relay adaptation protocol
  • RLC radio link control
  • MAC medium access control
  • PHY physical layer
  • the relay UE container may also include uplink (UL) synchronization related configuration.
  • the configuration may include a dedicated RACH preamble for the relay UE to gain quick UL synchronization with a serving gNB via contention free RACH procedure.
  • the relay UE container can include timing-advance (TA) information for RACH-less access, which may be determined by the serving gNB based on TA info of the remote UE and a measurement report from the remote UE over PC5 between the remote UE and the relay UE.
  • TA timing-advance
  • the relay UE container may also include much more information such as Uu SRB1 configuration, PC5 configuration (for example, SRAP, RLC-channel, MAC and PHY configuration) of SRB1 message, and optional C-RNTI. Other information may likewise be included in the relay UE container.
  • the remote UE Upon receiving the MP addition/modification configuration with the relay UE container, the remote UE can establish PC5 connection with the relay UE and can indicate the relay UE container to the relay UE.
  • the relay UE may omit at least some procedures of the regular RRC connection establishment procedure. The following are some examples, but other procedures of the regular RRC connection establishment procedure may also be considered and optionally omitted.
  • the relay UE may use the indicated TA for communication with the gNB over Uu and start monitoring PDCCH over Uu to send a confirmation message to the gNB to complete RRC connection establishment procedure of the relay UE right away.
  • the relay UE may initiate RACH procedure using the RACH preamble and can send the confirmation message, instead of an RRCSetupRequest, in msg3 of the RACH procedure to complete RRC connection establishment procedure of the relay UE.
  • the remote UE can respond to the serving gNB using a RRC reconfiguration complete message.
  • the message can indicate the delivery of the relay UE container to the relay UE.
  • the indication of the delivery of the relay UE container may be particularly useful for the RACH-less option described above.
  • the indication can be used by the serving gNB to start scheduling the relay UE for the confirmation message transmission in UL.
  • FIG. 2 illustrates a signaling flow of a method according to certain embodiments.
  • FIG. 2 illustrates an implementation example for fast and efficient indirect path establishment for multipath.
  • the remote UE may have at least a direct path established with the serving gNB at procedure 205.
  • the gNB can configure the remote UE with a measurement configuration, which may include the measurement on relay UEs over a PC5 interface.
  • the remote UE may report Uu and PC5 measurement results, in which the PC5 measurement results may include the discovered candidate relay UEs’ ID, serving cell ID, the PC5 measurement quantity results, remote UE’s location information if available, and the like.
  • the serving gNB at 215 may make a decision to add or modify an indirect path via a selected relay UE for the remote UE. Adding the indirect path for the remote UE may be applied if the remote UE has only the direct path established with the serving gNB. Modifying the indirect path for the remote UE may be applied if the remote UE has both direct path and indirect path established with the serving gNB and the serving gNB decides to modify the indirect path with a relay reselection from the current, or source, relay UE to the newly selected, or target, relay UE.
  • the serving gNB may identify that the (re) selected relay UE is not in RRC connected state and therefore that the relay UE needs to set up the relay UE’s own RRC connection with the serving gNB before the indirect path can be established.
  • the serving gNB may decide to include the relay UE’s RRC connection configuration in a relay UE container inside the RRC reconfiguration message to be sent, in procedure 220, to the remote UE to configure the remote UE to add or modify the indirect path via the (re) selected relay UE and provide the relay UE container to the relay UE over PC5 interface.
  • the remote UE may establish a PC5 connection to the selected relay UE, if not already connected. Then, in procedure 230, the UE may transmit the configuration received in the container to the relay UE.
  • FIG. 3 illustrates a radio resource control setup message.
  • the configuration information in the relay UE container provided in procedure 220 of FIG. 2 may include some, many, or all of the configuration parameters in the RRCSetup message as shown in FIG. 3, as well as other configuration parameters.
  • the relay UE container may also include the configuration parameters for UL synchronization for the relay UE.
  • the RACH configuration parameters such as a dedicated RACH preamble, can be provided.
  • the RACH configuration parameters can be used by the relay UE to initiate the RACH procedure for obtaining timing advance (TA) information from the gNB.
  • TA timing advance
  • the relay can send a RACH preamble at 240 and receive a RACH response at 245.
  • the TA information may be provided by the gNB in a relay container and the TA may be used by the relay UE for the relay UE’s UL transmission to the serving gNB.
  • the gNB may provide the TA information based on the remote UE’s TA in the direct path and/or location information of the relay UE and remote UE if such information is available.
  • the serving gNB may not provide either RACH preamble or TA, but may indicate to the remote UE to provide the remote UE’s TA information to the relay UE.
  • C-RNTI for the relay UE may or may not be provided in the relay UE container.
  • the relay UE can get a temporary C-RNTI allocated in RACH response message and the temporary C-RNTI can be promoted as normal C-RNTI if RACH procedure is successful. In this case, C-RNTI does not need to be included in the relay UE’s container.
  • the C-RNTI of the relay UE may be included in the relay UE container.
  • the relay UE container may be provided by the serving gNB without indicating the (re-) selected target relay UE.
  • the remote UE may select the relay UE for indirect path.
  • the relay UE container received from the serving gNB can be indicated to the selected relay UE by the remote UE as discussed below.
  • the allocated PC5 resources such as an SL configured grant, may be also provided by the gNB to the remote UE in the RRC Reconfiguration message. Such indication of the allocated PC5 resources may facilitate the remote UE to transmit the remote UE’s SL control signaling and data faster and more reliably over PC5 interface to the relay UE, without the need for resource sensing and selection.
  • the configuration of SRB1 for Uu and PC5 in RRCSetup message may not take into account the UE capability, because the UE capability may not be available in the serving gNB when RRCSetup message is transmitted.
  • the RRCSetup message may not be encrypted, as the security mode may not have been activated when the message is transmitted from the gNB to the remote UE. Therefore, there may be no UE capability mismatch issue or security issue to deliver the RRC connection configuration parameters to the relay UE via the remote UE.
  • the remote UE may need to establish the PC5 connection with the target relay UE indicated for the indirect path if the PC5 connection has not been set up with the relay UE before. Then the remote UE may forward the relay UE container to the relay UE over the PC5 connection.
  • the relay UE container may be forwarded to the relay UE in a PC5 connection establishment procedure.
  • the container may be integrated into the SL RRC reconfiguration message.
  • a new SL RRC message may be introduced to forward the relay UE container to the relay UE.
  • the remote UE may determine the delivery of the relay UE container to the relay UE either based on hybrid automatic repeat request (HARQ) acknowledgment (ACK) feedback from PHY/MAC layer if HARQ feedback is enabled for delivering the relay UE container over PC5.
  • HARQ hybrid automatic repeat request
  • ACK acknowledgment
  • the remote UE may determine the delivery of the relay UE container to the relay UE based on SL RRC procedures.
  • the RRC confirmation message which may be SL RRC reconfiguration complete, can be used as the delivery confirmation from the relay UE.
  • the remote UE can respond to the serving gNB with an RRC reconfiguration complete message, in which the indication of the delivery of the relay UE container to the relay UE is indicated. Based on this indication, the serving gNB can be aware of the relay UE’s reception of the RRC connection configuration and therefore prepare for the following actions.
  • the gNB can detect the dedicated RACH preamble when provided at 240 and then schedule UL resources to the relay UE for RACH msg3 transmission to allow the relay UE to send, in procedure 255, a confirmation message to the gNB for the RRC connection setup or resume in case the relay UE is in RRC inactive state.
  • the gNB may schedule UL resources to the relay UE upon receiving the delivery indication from the remote UE.
  • the UL resource can be used by the relay UE to send the confirmation message to the gNB for the RRC connection setup/resume.
  • the relay UE upon receiving the relay UE container forwarded from the remote UE, may either initiate RACH procedure if RACH configuration provided in the container or, in procedure 250, monitor the PDCCH using the C-RNTI included in the container for UL resource allocation to send the confirmation message for RRC connection setup/resume.
  • the confirmation message may be either a new RRC message or a reused RRC setup complete or RRC resume complete message.
  • the serving gNB Upon receiving the candidate relay UE report from the remote UE, the serving gNB, based on the relay UE’s ID, may only identify that the relay UE is not in RRC connected state, but may not be able to differentiate as to whether the relay UE is in RRC idle state or RRC inactive state. Thus, the relay UE container may only include the configuration parameters similar to those in an RRCSetup message. Providing additional configuration, such as data radio bearer (DRB) configurations as in an RRCResume message, may not be possible. However, the relay UE may, based on the relay UE’s RRC state, provide different information in the confirmation message. For instance, different UE ID, such as fifth generation temporary mobile subscriber identity (5G-TMSI) or inactive radio network temporary identifier (I-RNTI) may be provided in the confirmation message for the relay UE in RRC idle or RRC inactive state respectively.
  • 5G-TMSI fifth generation temporary mobile subscriber identity
  • I-RNTI inactive radio network
  • the implementation example of FIG. 2 is described for a scenario in which the direct and indirect paths are connected to the same serving gNB.
  • the same mechanism can also be applied for a scenario in which the direct path and indirect path are connected to different gNBs.
  • the gNB that the indirect path is connected to can provide the relay UE container via inter-gNB interface, such as Xn interface or N2 interface, to the gNB to which the direct path is connected.
  • Certain embodiments are described in a multipath scenario where a UE has at least a direct path to a gNB with or without a second indirect path, and it is decided by gNB to add a second indirect path, or to modify the second indirect path if the second indirect path exists, via a (re) selected Relay UE while the direct path is maintained.
  • the approach for fast setup of indirect path can also be applicable in a single path scenario where a path switch from direct to indirect is triggered, such that the remote UE receives the configuration or TA via the remote UE’s current path and transmits to the target relay UE for fast path switch.
  • certain embodiments may also be applicable to add a third path, where a direct path and an indirect path already exist and are to be maintained.
  • FIG. 4 illustrates an example of a system that includes an apparatus 10, according to an embodiment.
  • apparatus 10 may be a node, host, or server in a communications network or serving such a network.
  • apparatus 10 may be a network node, satellite, base station, a Node B, an evolved Node B (eNB) , 5G Node B or access point, next generation Node B (NG-NB or gNB) , TRP, HAPS, integrated access and backhaul (IAB) node, and/or a WLAN access point, associated with a radio access network, such as a LTE network, 5G or NR.
  • apparatus 10 may be gNB or other similar radio node, for instance.
  • apparatus 10 may include an edge cloud server as a distributed computing system where the server and the radio node may be stand-alone apparatuses communicating with each other via a radio path or via a wired connection, or they may be located in a same entity communicating via a wired connection.
  • apparatus 10 represents a gNB
  • it may be configured in a central unit (CU) and distributed unit (DU) architecture that divides the gNB functionality.
  • the CU may be a logical node that includes gNB functions such as transfer of user data, mobility control, radio access network sharing, positioning, and/or session management, etc.
  • the CU may control the operation of DU (s) over a mid-haul interface, referred to as an F1 interface, and the DU (s) may have one or more radio unit (RU) connected with the DU (s) over a front-haul interface.
  • the DU may be a logical node that includes a subset of the gNB functions, depending on the functional split option. It should be noted that one of ordinary skill in the art would understand that apparatus 10 may include components or features not shown in FIG. 4.
  • apparatus 10 may include a processor 12 for processing information and executing instructions or operations.
  • processor 12 may be any type of general or specific purpose processor.
  • processor 12 may include one or more of general-purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) , field-programmable gate arrays (FPGAs) , application-specific integrated circuits (ASICs) , and processors based on a multi-core processor architecture, or any other processing means, as examples. While a single processor 12 is shown in FIG. 4, multiple processors may be utilized according to other embodiments.
  • apparatus 10 may include two or more processors that may form a multiprocessor system (e.g., in this case processor 12 may represent a multiprocessor) that may support multiprocessing.
  • processor 12 may represent a multiprocessor
  • the multiprocessor system may be tightly coupled or loosely coupled (e.g., to form a computer cluster) .
  • Processor 12 may perform functions associated with the operation of apparatus 10, which may include, for example, precoding of antenna gain/phase parameters, encoding and decoding of individual bits forming a communication message, formatting of information, and overall control of the apparatus 10, including processes related to setting up or modifying an indirect path as an additional path in cases where a relay user equipment may be in idle or inactive state, such as radio resource control idle/inactive.
  • Apparatus 10 may further include or be coupled to a memory 14 (internal or external) , which may be coupled to processor 12, for storing information and instructions that may be executed by processor 12.
  • Memory 14 may be one or more memories and of any type suitable to the local application environment, and may be implemented using any suitable volatile or nonvolatile data storage technology such as a semiconductor-based memory device, a magnetic memory device and system, an optical memory device and system, fixed memory, and/or removable memory.
  • memory 14 can be include any combination of random access memory (RAM) , read only memory (ROM) , static storage such as a magnetic or optical disk, hard disk drive (HDD) , or any other type of non-transitory machine or computer readable media, or other appropriate storing means.
  • the instructions stored in memory 14 may include program instructions or computer program code that, when executed by processor 12, enable the apparatus 10 to perform tasks as described herein.
  • apparatus 10 may further include or be coupled to (internal or external) a drive or port that is configured to accept and read an external computer readable storage medium, such as an optical disc, USB drive, flash drive, or any other storage medium.
  • an external computer readable storage medium such as an optical disc, USB drive, flash drive, or any other storage medium.
  • the external computer readable storage medium may store a computer program or software for execution by processor 12 and/or apparatus 10.
  • apparatus 10 may also include or be coupled to one or more antennas 15 for transmitting and receiving signals and/or data to and from apparatus 10.
  • Apparatus 10 may further include or be coupled to a transceiver 18 configured to transmit and receive information.
  • the transceiver 18 may include, for example, a plurality of radio interfaces that may be coupled to the antenna (s) 15, or may include any other appropriate transceiving means.
  • the radio interfaces may correspond to a plurality of radio access technologies including one or more of global system for mobile communications (GSM) , narrow band Internet of Things (NB-IoT) , LTE, 5G, WLAN, Bluetooth (BT) , Bluetooth Low Energy (BT-LE) , near-field communication (NFC) , radio frequency identifier (RFID) , ultrawideband (UWB) , MulteFire, and the like.
  • GSM global system for mobile communications
  • NB-IoT narrow band Internet of Things
  • BT Bluetooth
  • BT-LE Bluetooth Low Energy
  • NFC near-field communication
  • RFID radio frequency identifier
  • UWB ultrawideband
  • MulteFire and the like.
  • the radio interface may include components, such as filters, converters (for example, digital-to-analog converters and the like) , mappers, a Fast Fourier Transform (FFT) module, and the like, to generate symbols for a transmission via one or more downlinks and to receive symbols (via an
  • transceiver 18 may be configured to modulate information on to a carrier waveform for transmission by the antenna (s) 15 and demodulate information received via the antenna (s) 15 for further processing by other elements of apparatus 10.
  • transceiver 18 may be capable of transmitting and receiving signals or data directly.
  • apparatus 10 may include an input and/or output device (I/O device) , or an input/output means.
  • memory 14 may store software modules that provide functionality when executed by processor 12.
  • the modules may include, for example, an operating system that provides operating system functionality for apparatus 10.
  • the memory may also store one or more functional modules, such as an application or program, to provide additional functionality for apparatus 10.
  • the components of apparatus 10 may be implemented in hardware, or as any suitable combination of hardware and software.
  • processor 12 and memory 14 may be included in or may form a part of processing circuitry/means or control circuitry/means.
  • transceiver 18 may be included in or may form a part of transceiver circuitry/means.
  • circuitry may refer to hardware-only circuitry implementations (e.g., analog and/or digital circuitry) , combinations of hardware circuits and software, combinations of analog and/or digital hardware circuits with software/firmware, any portions of hardware processor (s) with software (including digital signal processors) that work together to cause an apparatus (e.g., apparatus 10) to perform various functions, and/or hardware circuit (s) and/or processor (s) , or portions thereof, that use software for operation but where the software may not be present when it is not needed for operation.
  • hardware-only circuitry implementations e.g., analog and/or digital circuitry
  • combinations of hardware circuits and software e.g., combinations of hardware circuits and software, combinations of analog and/or digital hardware circuits with software/firmware, any portions of hardware processor (s) with software (including digital signal processors) that work together to cause an apparatus (e.g., apparatus 10) to perform various functions, and/or hardware circuit (s) and/or processor (s) , or portions thereof, that use
  • circuitry may also cover an implementation of merely a hardware circuit or processor (or multiple processors) , or portion of a hardware circuit or processor, and its accompanying software and/or firmware.
  • circuitry may also cover, for example, a baseband integrated circuit in a server, cellular network node or device, or other computing or network device.
  • apparatus 10 may be or may be a part of a network element or RAN node, such as a base station, access point, Node B, eNB, gNB, TRP, HAPS, IAB node, relay node, WLAN access point, satellite, or the like.
  • apparatus 10 may be a gNB or other radio node, or may be a CU and/or DU of a gNB.
  • apparatus 10 may be controlled by memory 14 and processor 12 to perform the functions associated with any of the embodiments described herein.
  • apparatus 10 may be configured to perform one or more of the processes depicted in any of the flow charts or signaling diagrams described herein, such as those illustrated in FIGs. 1-3, or any other method described herein.
  • apparatus 10 may be configured to perform a procedure relating to providing setting up an indirect path as an additional path in cases where a relay user equipment may be in idle or inactive state, such as radio resource control idle/inactive, for example.
  • FIG. 4 further illustrates an example of an apparatus 20, according to an embodiment.
  • apparatus 20 may be a node or element in a communications network or associated with such a network, such as a UE, communication node, mobile equipment (ME) , mobile station, mobile device, stationary device, IoT device, or other device.
  • a UE communication node
  • ME mobile equipment
  • IoT device IoT device
  • a UE may alternatively be referred to as, for example, a mobile station, mobile equipment, mobile unit, mobile device, user device, subscriber station, wireless terminal, tablet, smart phone, IoT device, sensor or NB-IoT device, a watch or other wearable, a head-mounted display (HMD) , a vehicle, a drone, a medical device and applications thereof (e.g., remote surgery) , an industrial device and applications thereof (e.g., a robot and/or other wireless devices operating in an industrial and/or an automated processing chain context) , a consumer electronics device, a device operating on commercial and/or industrial wireless networks, or the like.
  • apparatus 20 may be implemented in, for instance, a wireless handheld device, a wireless plug-in accessory, or the like.
  • apparatus 20 may include one or more processors, one or more computer-readable storage medium (for example, memory, storage, or the like) , one or more radio access components (for example, a modem, a transceiver, or the like) , and/or a user interface.
  • apparatus 20 may be configured to operate using one or more radio access technologies, such as GSM, LTE, LTE-A, NR, 5G, WLAN, WiFi, NB-IoT, Bluetooth, NFC, MulteFire, and/or any other radio access technologies. It should be noted that one of ordinary skill in the art would understand that apparatus 20 may include components or features not shown in FIG. 4.
  • apparatus 20 may include or be coupled to a processor 22 for processing information and executing instructions or operations.
  • processor 22 may be any type of general or specific purpose processor.
  • processor 22 may include one or more of general-purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) , field-programmable gate arrays (FPGAs) , application-specific integrated circuits (ASICs) , and processors based on a multi-core processor architecture, as examples. While a single processor 22 is shown in FIG. 4, multiple processors may be utilized according to other embodiments.
  • apparatus 20 may include two or more processors that may form a multiprocessor system (e.g., in this case processor 22 may represent a multiprocessor) that may support multiprocessing.
  • processor 22 may represent a multiprocessor
  • the multiprocessor system may be tightly coupled or loosely coupled (e.g., to form a computer cluster) .
  • Processor 22 may perform functions associated with the operation of apparatus 20 including, as some examples, precoding of antenna gain/phase parameters, encoding and decoding of individual bits forming a communication message, formatting of information, and overall control of the apparatus 20, including processes related to management of communication resources.
  • Apparatus 20 may further include or be coupled to a memory 24 (internal or external) , which may be coupled to processor 22, for storing information and instructions that may be executed by processor 22.
  • Memory 24 may be one or more memories and of any type suitable to the local application environment, and may be implemented using any suitable volatile or nonvolatile data storage technology such as a semiconductor-based memory device, a magnetic memory device and system, an optical memory device and system, fixed memory, and/or removable memory.
  • memory 24 can include any combination of random access memory (RAM) , read only memory (ROM) , static storage such as a magnetic or optical disk, hard disk drive (HDD) , or any other type of non-transitory machine or computer readable media.
  • the instructions stored in memory 24 may include program instructions or computer program code that, when executed by processor 22, enable the apparatus 20 to perform tasks as described herein.
  • apparatus 20 may further include or be coupled to (internal or external) a drive or port that is configured to accept and read an external computer readable storage medium, such as an optical disc, USB drive, flash drive, or any other storage medium.
  • an external computer readable storage medium such as an optical disc, USB drive, flash drive, or any other storage medium.
  • the external computer readable storage medium may store a computer program or software for execution by processor 22 and/or apparatus 20.
  • apparatus 20 may also include or be coupled to one or more antennas 25 for receiving a downlink signal and for transmitting via an uplink from apparatus 20.
  • Apparatus 20 may further include a transceiver 28 configured to transmit and receive information.
  • the transceiver 28 may also include a radio interface (e.g., a modem) coupled to the antenna 25.
  • the radio interface may correspond to a plurality of radio access technologies including one or more of GSM, LTE, LTE-A, 5G, NR, WLAN, NB-IoT, Bluetooth, BT-LE, NFC, RFID, UWB, and the like.
  • the radio interface may include other components, such as filters, converters (for example, digital-to-analog converters and the like) , symbol demappers, signal shaping components, an Inverse Fast Fourier Transform (IFFT) module, and the like, to process symbols, such as OFDM symbols, carried by a downlink or an uplink.
  • filters for example, digital-to-analog converters and the like
  • symbol demappers for example, digital-to-analog converters and the like
  • signal shaping components for example, an Inverse Fast Fourier Transform (IFFT) module, and the like
  • IFFT Inverse Fast Fourier Transform
  • transceiver 28 may be configured to modulate information on to a carrier waveform for transmission by the antenna (s) 25 and demodulate information received via the antenna (s) 25 for further processing by other elements of apparatus 20.
  • transceiver 28 may be capable of transmitting and receiving signals or data directly.
  • apparatus 20 may include an input and/or output device (I/O device) .
  • apparatus 20 may further include a user interface, such as a graphical user interface or touchscreen.
  • memory 24 stores software modules that provide functionality when executed by processor 22.
  • the modules may include, for example, an operating system that provides operating system functionality for apparatus 20.
  • the memory may also store one or more functional modules, such as an application or program, to provide additional functionality for apparatus 20.
  • the components of apparatus 20 may be implemented in hardware, or as any suitable combination of hardware and software.
  • apparatus 20 may optionally be configured to communicate with apparatus 10 via a wireless or wired communications link 70 according to any radio access technology, such as NR.
  • processor 22 and memory 24 may be included in or may form a part of processing circuitry or control circuitry.
  • transceiver 28 may be included in or may form a part of transceiving circuitry.
  • apparatus 20 may be a UE, SL UE, relay UE, mobile device, mobile station, ME, IoT device and/or NB-IoT device, or the like, for example.
  • apparatus 20 may be controlled by memory 24 and processor 22 to perform the functions associated with any of the embodiments described herein, such as one or more of the operations illustrated in, or described with respect to, FIGs. 1-3, or any other method described herein.
  • apparatus 20 may be controlled to perform a process relating to providing setting up or modifying an indirect path as an additional path in cases where a relay user equipment may be in idle or inactive state, such as radio resource control idle/inactive, as described in detail elsewhere herein.
  • an apparatus may include means for performing a method, a process, or any of the variants discussed herein.
  • the means may include one or more processors, memory, controllers, transmitters, receivers, and/or computer program code for causing the performance of any of the operations discussed herein.
  • certain example embodiments provide several technological improvements, enhancements, and/or advantages over existing technological processes and constitute an improvement at least to the technological field of wireless network control and/or management. Certain embodiments may provide various benefits and/or advantages. For example, certain embodiments may provide a way to provide a greatly accelerated connection setup or modification even when a relay UE is in RRC idle or RRC inactive. Certain embodiments may benefit the creation or modification of an indirect path in a multipath scenario.
  • any of the methods, processes, signaling diagrams, algorithms or flow charts described herein may be implemented by software and/or computer program code or portions of code stored in memory or other computer readable or tangible media, and may be executed by a processor.
  • an apparatus may include or be associated with at least one software application, module, unit or entity configured as arithmetic operation (s) , or as a program or portions of programs (including an added or updated software routine) , which may be executed by at least one operation processor or controller.
  • Programs also called program products or computer programs, including software routines, applets and macros, may be stored in any apparatus-readable data storage medium and may include program instructions to perform particular tasks.
  • a computer program product may include one or more computer-executable components which, when the program is run, are configured to carry out some example embodiments.
  • the one or more computer-executable components may be at least one software code or portions of code. Modifications and configurations required for implementing the functionality of an example embodiment may be performed as routine (s) , which may be implemented as added or updated software routine (s) .
  • software routine (s) may be downloaded into the apparatus.
  • software or computer program code or portions of code may be in source code form, object code form, or in some intermediate form, and may be stored in some sort of carrier, distribution medium, or computer readable medium, which may be any entity or device capable of carrying the program.
  • Such carriers may include a record medium, computer memory, read-only memory, photoelectrical and/or electrical carrier signal, telecommunications signal, and/or software distribution package, for example.
  • the computer program may be executed in a single electronic digital computer or it may be distributed amongst a number of computers.
  • the computer readable medium or computer readable storage medium may be a non-transitory medium.
  • the term “non-transitory” as used herein, is a limitation of the medium itself (i.e. tangible, not a signal) as opposed to a limitation on data storage persistency (e.g. RAM vs. ROM) .
  • example embodiments may be performed by hardware or circuitry included in an apparatus, for example through the use of an application specific integrated circuit (ASIC) , a programmable gate array (PGA) , a field programmable gate array (FPGA) , or any other combination of hardware and software.
  • ASIC application specific integrated circuit
  • PGA programmable gate array
  • FPGA field programmable gate array
  • the functionality of example embodiments may be implemented as a signal, such as a non-tangible means, that can be carried by an electromagnetic signal downloaded from the Internet or other network.
  • an apparatus such as a node, device, or a corresponding component, may be configured as circuitry, a computer or a microprocessor, such as single-chip computer element, or as a chipset, which may include at least a memory for providing storage capacity used for arithmetic operation (s) and/or an operation processor for executing the arithmetic operation (s) .
  • Example embodiments described herein may apply to both singular and plural implementations, regardless of whether singular or plural language is used in connection with describing certain embodiments.
  • an embodiment that describes operations of a single network node may also apply to example embodiments that include multiple instances of the network node, and vice versa.
  • PC5 a reference point where the UE directly communicates with another UE over a direct channel

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

Abstract

L'invention concerne des systèmes, des procédés, des appareils et des produits programmes d'ordinateur pour établir un trajet indirect servant de trajet supplémentaire dans des cas où un équipement utilisateur de relais peut être dans un état d'attente ou dans un état inactif, tel qu'un état d'attente/inactif de commande de ressource radio. Par exemple, un procédé peut comprendre l'étape consistant à recevoir, en provenance d'un élément de réseau, une configuration d'un conteneur d'équipement utilisateur de relais associé à une ajout à un chemin indirect entre l'appareil et l'élément de réseau ou à la modification de ce chemin indirect entre l'appareil et l'élément de réseau. Le procédé peut également consister à indiquer le conteneur d'équipement utilisateur de relais à un équipement utilisateur de relais.
PCT/CN2022/125422 2022-10-14 2022-10-14 Établissement de trajet indirect rapide pour un équipement utilisateur de liaison latérale à un relais de réseau WO2024077606A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2022/125422 WO2024077606A1 (fr) 2022-10-14 2022-10-14 Établissement de trajet indirect rapide pour un équipement utilisateur de liaison latérale à un relais de réseau

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PCT/CN2022/125422 WO2024077606A1 (fr) 2022-10-14 2022-10-14 Établissement de trajet indirect rapide pour un équipement utilisateur de liaison latérale à un relais de réseau

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CN109245845A (zh) * 2017-05-05 2019-01-18 中兴通讯股份有限公司 一种信令传输方法及设备
CN112839368A (zh) * 2019-11-22 2021-05-25 联发科技（新加坡）私人有限公司 分组路由方法和用户设备
WO2021155839A1 (fr) * 2020-02-06 2021-08-12 Mediatek Singapore Pte. Ltd. Procédés et appareil de continuité de service basée sur une commutation de trajet pour un relais d'équipement utilisateur (ue) à réseau
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CN112839368A (zh) * 2019-11-22 2021-05-25 联发科技（新加坡）私人有限公司 分组路由方法和用户设备
WO2021155839A1 (fr) * 2020-02-06 2021-08-12 Mediatek Singapore Pte. Ltd. Procédés et appareil de continuité de service basée sur une commutation de trajet pour un relais d'équipement utilisateur (ue) à réseau
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