WO2024087170A1 - Procédé, dispositif et support de stockage informatique de communication - Google Patents

Procédé, dispositif et support de stockage informatique de communication Download PDF

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Publication number
WO2024087170A1
WO2024087170A1 PCT/CN2022/128259 CN2022128259W WO2024087170A1 WO 2024087170 A1 WO2024087170 A1 WO 2024087170A1 CN 2022128259 W CN2022128259 W CN 2022128259W WO 2024087170 A1 WO2024087170 A1 WO 2024087170A1
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WIPO (PCT)
Prior art keywords
network device
broadcast service
message
configuration
reception
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PCT/CN2022/128259
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English (en)
Inventor
Gang Wang
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Nec Corporation
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Priority to PCT/CN2022/128259 priority Critical patent/WO2024087170A1/fr
Publication of WO2024087170A1 publication Critical patent/WO2024087170A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel

Definitions

  • Embodiments of the present disclosure generally relate to the field of telecommunication, and in particular, to methods, devices and computer storage media of communication for multicast and broadcast service (MBS) .
  • MBS multicast and broadcast service
  • NR MBS broadcast solution allows that user equipment (UE) receives a broadcast service in a downlink only manner, i.e., performing broadcast reception without a need to access a network beforehand.
  • UE user equipment
  • the UE may be required to simultaneously receive a broadcast service and a unicast service from the network (s) of same or another operator, and some UEs may share hardware resources between broadcast and unicast.
  • the unicast connection might be impacted by the broadcast reception for this kind of UEs.
  • embodiments of the present disclosure provide methods, devices and computer storage media of communication for MBS broadcast reception.
  • a method of communication comprises: determining, at a terminal device, that a broadcast service is to be received from a first network device; and transmitting, to a second network device, a message requesting reception of the broadcast service from the first network device, the message comprising information regarding the reception of the broadcast service from the first network device.
  • a method of communication comprises: receiving, at a second network device and from a terminal device, a message requesting reception of a broadcast service from a first network device, the message comprising information regarding the reception of the broadcast service from the first network device.
  • a device of communication comprises a processor configured to cause the device to perform the method according to the first or second aspect of the present disclosure.
  • a computer readable medium having instructions stored thereon.
  • the instructions when executed on at least one processor, cause the at least one processor to perform the method according to the first or second aspect of the present disclosure.
  • FIG. 1 illustrates an example communication network in which some embodiments of the present disclosure can be implemented
  • FIG. 2A illustrates a schematic diagram of a unicast scenario in which some embodiments of the present disclosure can be implemented
  • FIG. 2B illustrates a schematic diagram of a MBS scenario in which some embodiments of the present disclosure can be implemented
  • FIG. 3 illustrates a schematic diagram illustrating a process of communication for MBS broadcast reception according to embodiments of the present disclosure
  • FIG. 4 illustrates an example method of communication implemented at a terminal device in accordance with some embodiments of the present disclosure
  • FIG. 5 illustrates an example method of communication implemented at a network device in accordance with some embodiments of the present disclosure.
  • FIG. 6 is a simplified block diagram of a device that is suitable for implementing embodiments of the present disclosure.
  • terminal device refers to any device having wireless or wired communication capabilities.
  • the terminal device include, but not limited to, user equipment (UE) , personal computers, desktops, mobile phones, cellular phones, smart phones, personal digital assistants (PDAs) , portable computers, tablets, wearable devices, internet of things (IoT) devices, Ultra-reliable and Low Latency Communications (URLLC) devices, Internet of Everything (IoE) devices, machine type communication (MTC) devices, device on vehicle for V2X communication where X means pedestrian, vehicle, or infrastructure/network, devices for Integrated Access and Backhaul (IAB) , Space borne vehicles or Air borne vehicles in Non-terrestrial networks (NTN) including Satellites and High Altitude Platforms (HAPs) encompassing Unmanned Aircraft Systems (UAS) , eXtended Reality (XR) devices including different types of realities such as Augmented Reality (AR) , Mixed Reality (MR) and Virtual Reality (VR) , the unmanned aerial vehicle (UAV)
  • UE user equipment
  • the ‘terminal device’ can further has ‘multicast/broadcast’ feature, to support public safety and mission critical, V2X applications, transparent IPv4/IPv6 multicast delivery, IPTV, smart TV, radio services, software delivery over wireless, group communications and IoT applications. It may also incorporated one or multiple Subscriber Identity Module (SIM) as known as Multi-SIM.
  • SIM Subscriber Identity Module
  • the term “terminal device” can be used interchangeably with a UE, a mobile station, a subscriber station, a mobile terminal, a user terminal or a wireless device.
  • network device refers to a device which is capable of providing or hosting a cell or coverage where terminal devices can communicate.
  • a network device include, but not limited to, a Node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , a next generation NodeB (gNB) , a transmission reception point (TRP) , a remote radio unit (RRU) , a radio head (RH) , a remote radio head (RRH) , an IAB node, a low power node such as a femto node, a pico node, a reconfigurable intelligent surface (RIS) , and the like.
  • NodeB Node B
  • eNodeB or eNB evolved NodeB
  • gNB next generation NodeB
  • TRP transmission reception point
  • RRU remote radio unit
  • RH radio head
  • RRH remote radio head
  • IAB node a low power node such as a fe
  • the terminal device or the network device may have Artificial intelligence (AI) or Machine learning capability. It generally includes a model which has been trained from numerous collected data for a specific function, and can be used to predict some information.
  • AI Artificial intelligence
  • Machine learning capability it generally includes a model which has been trained from numerous collected data for a specific function, and can be used to predict some information.
  • the terminal or the network device may work on several frequency ranges, e.g. FR1 (410 MHz to 7125 MHz) , FR2 (24.25GHz to 71GHz) , frequency band larger than 100GHz as well as Tera Hertz (THz) . It can further work on licensed/unlicensed/shared spectrum.
  • the terminal device may have more than one connection with the network devices under Multi-Radio Dual Connectivity (MR-DC) application scenario.
  • MR-DC Multi-Radio Dual Connectivity
  • the terminal device or the network device can work on full duplex, flexible duplex and cross division duplex modes.
  • test equipment e.g. signal generator, signal analyzer, spectrum analyzer, network analyzer, test terminal device, test network device, channel emulator.
  • the terminal device may be connected with a first network device and a second network device.
  • One of the first network device and the second network device may be a master node and the other one may be a secondary node.
  • the first network device and the second network device may use different radio access technologies (RATs) .
  • the first network device may be a first RAT device and the second network device may be a second RAT device.
  • the first RAT device is eNB and the second RAT device is gNB.
  • Information related with different RATs may be transmitted to the terminal device from at least one of the first network device or the second network device.
  • first information may be transmitted to the terminal device from the first network device and second information may be transmitted to the terminal device from the second network device directly or via the first network device.
  • information related with configuration for the terminal device configured by the second network device may be transmitted from the second network device via the first network device.
  • Information related with reconfiguration for the terminal device configured by the second network device may be transmitted to the terminal device from the second network device directly or via the first network device.
  • the singular forms ‘a’ , ‘an’ and ‘the’ are intended to include the plural forms as well, unless the context clearly indicates otherwise.
  • the term ‘includes’ and its variants are to be read as open terms that mean ‘includes, but is not limited to. ’
  • the term ‘based on’ is to be read as ‘at least in part based on. ’
  • the term ‘one embodiment’ and ‘an embodiment’ are to be read as ‘at least one embodiment. ’
  • the term ‘another embodiment’ is to be read as ‘at least one other embodiment. ’
  • the terms ‘first, ’ ‘second, ’ and the like may refer to different or same objects. Other definitions, explicit and implicit, may be included below.
  • values, procedures, or apparatus are referred to as ‘best, ’ ‘lowest, ’ ‘highest, ’ ‘minimum, ’ ‘maximum, ’ or the like. It will be appreciated that such descriptions are intended to indicate that a selection among many used functional alternatives can be made, and such selections need not be better, smaller, higher, or otherwise preferable to other selections.
  • MMS may be interchangeably used with “broadcast” , “MBS broadcast” , “broadcast service” , “broadcast transmission” or “broadcast data” .
  • Broadcast reception may be interchangeably used with “MBS broadcast reception” .
  • a connected state may be interchangeably used with “a RRC_CONNECTED state”
  • an idle state may be interchangeably used with “a RRC_IDLE state”
  • the term “an inactive state” may be interchangeably used with “a RRC_INACTIVE state” .
  • UE may receive a broadcast session from a non-serving cell or different gNB (e.g., different operator) . If a hardware resource of the UE is shared between a unicast service and such a broadcast service at the same time, the serving gNB providing the unicast service is not aware of the broadcast service transmission from another gNB, and thus resource overlapping may happen. In this case, there would be an impact on transmission for both unicast and broadcast services.
  • gNB e.g., different operator
  • embodiments of the present disclosure provide a solution for MBS broadcast reception to overcome the above and other potential issues.
  • the terminal device if a terminal device expects to receive a broadcast service from a first network device not serving the terminal device, the terminal device transmits, to a second network device serving the terminal device, a message requesting reception of the broadcast service from the first network device.
  • the message comprises information regarding the reception of the broadcast service from the first network device. In this way, a shared process between a unicast service and a MBS broadcast service may be enhanced.
  • FIG. 1 illustrates a schematic diagram of an example communication network 100 in which some embodiments of the present disclosure can be implemented.
  • the communication network 100 may include a terminal device 110, a network device 120 and a network device 130.
  • the network device 120 may provide a serving cell (also referred to as a cell herein) 121 to serve one or more terminal devices.
  • the terminal device 110 is shown as being located in the cell 121 and served by the network device 120.
  • the terminal device 110 is not served by the network device 130.
  • the communication network 100 may include any suitable number of network devices and/or terminal devices and/cells adapted for implementing implementations of the present disclosure.
  • the terminal device 110 may communicate with the network devices 120 and 130 via a channel such as a wireless communication channel.
  • the communications in the communication network 100 may conform to any suitable standards including, but not limited to, Global System for Mobile Communications (GSM) , Long Term Evolution (LTE) , LTE-Evolution, LTE-Advanced (LTE-A) , New Radio (NR) , Wideband Code Division Multiple Access (WCDMA) , Code Division Multiple Access (CDMA) , GSM EDGE Radio Access Network (GERAN) , Machine Type Communication (MTC) and the like.
  • GSM Global System for Mobile Communications
  • LTE Long Term Evolution
  • LTE-Evolution LTE-Advanced
  • NR New Radio
  • WCDMA Wideband Code Division Multiple Access
  • CDMA Code Division Multiple Access
  • GERAN GSM EDGE Radio Access Network
  • MTC Machine Type Communication
  • Examples of the communication protocols include, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) communication protocols, 5.5G, 5G-Advanced networks, or the sixth generation (6G) networks.
  • FIG. 2A illustrates a schematic diagram of a unicast scenario 200A in which some embodiments of the present disclosure can be implemented.
  • a base station 210 may transmit downlink control information (DCI) on a physical downlink control channel (PDCCH) 201 with a cell-radio network temporary identifier (C-RNTI) for UE1.
  • DCI downlink control information
  • PDCH physical downlink control channel
  • C-RNTI cell-radio network temporary identifier
  • UE1 may be scheduled to receive data (for example, video stream) on a physical downlink shared channel (PDSCH) 202 in unicast.
  • PDSCH physical downlink shared channel
  • the base station 210 may transmit DCI on a PDCCH 203 with a C-RNTI for UE2 to schedule UE2 to receive the data on a PDSCH 204 in unicast.
  • the base station 210 may transmit DCI on a PDCCH 205 with a C-RNTI for UE3 to schedule UE3 to receive the data on a PDSCH 206 in unicast.
  • FIG. 2B illustrates a schematic diagram of a MBS scenario 200B in which some embodiments of the present disclosure can be implemented.
  • the base station 210 may transmit DCI on a PDCCH 207 with a group-radio network temporary identifier (G-RNTI) for a set of UEs 220.
  • G-RNTI group-radio network temporary identifier
  • the set of UEs 220 may be scheduled to receive the data on a PDSCH 208 in multicast or broadcast, i.e., to receive the data simultaneously.
  • the same service and the same specific content data may be provided simultaneously to all UEs in a geographical area (i.e., all UEs in the broadcast service area are authorized to receive the data) .
  • a broadcast communication service is delivered to the UEs using a broadcast session.
  • UE may receive a broadcast communication service in RRC_IDLE, RRC_INACTIVE and RRC_CONNECTED state.
  • the terminal device 110 may receive, from the network device 120, system information block 21 (SIB21) indicating that the network device 120 provides a MBS broadcast service. If the terminal device 110 is interested to receive the MBS broadcast service, the terminal device 110 may transmit, to the network device 120, a MBS Interest Indication (MII) to inform the network that the terminal device 110 in RRC_CONNECTED state is receiving or is interested to receive the MBS broadcast service and to inform the network about a priority of MBS broadcast versus unicast and multicast reception. MII may only be sent after access stratum (AS) security activation.
  • AS access stratum
  • the terminal device 110 may be able to receive MBS broadcast from the network device 130.
  • the terminal device 110 may receive a broadcast configuration from the network device 130 and receive a broadcast service from the network device 130 based on the broadcast configuration.
  • the serving gNB is not aware of the broadcast service transmission from the non-serving gNB, and thus resource overlapping may happen. There would be an impact on transmission for both unicast and broadcast services.
  • embodiments of the present disclosure provide solutions for MBS broadcast reception in an inactive state so as to overcome the above and other potential issues.
  • the detailed description will be made with reference to FIG. 3 below.
  • FIG. 3 illustrates a schematic diagram illustrating a process 300 of communication for MBS broadcast reception according to embodiments of the present disclosure.
  • the process 300 may involve the terminal device 110 and the network device 120 as illustrated in FIG. 1. It is to be understood that the steps and the order of the steps in FIG. 3 are merely for illustration, and not for limitation. For example, the order of the steps may be changed. Some of the steps may be omitted or any other suitable additional steps may be added. It is assumed that the terminal device 110 is served by the network device 120 and is not served by the network device 130.
  • the terminal device 110 may decide 310 to receive a broadcast service from the network device 130 (e.g., a non-serving cell) .
  • the network device 130 e.g., a non-serving cell
  • the terminal device 110 may transmit 320, to the network device 120, a message requesting reception of the broadcast service from the network device 130.
  • the message may be a MII. It is to be understood that the message may adopt any other suitable forms.
  • the message comprises information regarding the reception of the broadcast service from the network device 130.
  • the information regarding the reception of the broadcast service may comprise identity (ID) information of the network device 130.
  • the ID information may comprise a public land mobile network (PLMN) ID of the network device 130.
  • the ID information may comprise a cell ID of the network device 130.
  • the ID information may comprise a physical cell identity (PCI) of the network device 130. It is to be understood that any combination of the above IDs may also be feasible.
  • the information regarding the reception of the broadcast service may comprise a duration for which the terminal device 110 expects to receive the broadcast service from the network device 130.
  • the information regarding the reception of the broadcast service may comprise a value of an inactivity timer.
  • the information regarding the reception of the broadcast service may comprise information of discontinuous reception (DRX) for the broadcast service.
  • DRX discontinuous reception
  • the information regarding the reception of the broadcast service may comprise priority information indicating whether the broadcast service is prioritized over unicast and multicast services. For example, if the broadcast service is prioritized over unicast and multicast services, a value of a priority field may be true. In another example, if unicast and multicast services are prioritized over the broadcast service, a value of a priority field may be false. In still another example, if unicast and multicast services are prioritized over the broadcast service, a priority field may be absent. If the broadcast service is prioritized over unicast and multicast services, a priority field may be present. In yet another example, the priority information may explicitly indicate unicast or broadcast.
  • the information regarding the reception of the broadcast service may comprise information of a frequency domain resource (e.g., common frequency resource (CFR) ) in which the network device 130 provides the broadcast service.
  • a frequency domain resource e.g., common frequency resource (CFR)
  • CFR common frequency resource
  • the information regarding the reception of the broadcast service may comprise any combination of the above listed information and any other suitable information.
  • an example message may be designed as below.
  • CFR indicates a frequency domain resource (e.g. Bandwidth, PDSCH-Config, CORESET) in which the network device 130 provide a broadcast service.
  • PLMN indicates which PLMN (e.g., operator) that the terminal device 110 uses for broadcast reception from the network device 130.
  • CellIdentity indicates the cell ID of the network device 130.
  • PCI indicates the physical cell ID of the network device 130.
  • Inactivity timer indicates how long the duration the terminal device 110 expects to receive broadcast from the network device 130, where reasonable unit is second but the present disclosure does not limit this aspect.
  • DRX-ConifgPTM indicates DRX used for broadcast monitoring. Priority indicates whether the terminal device 110 prioritizes broadcast reception from the network device 130 above unicast and multicast reception. Opt.
  • Opt. 1 indicates that the field value is true if the UE prioritizes broadcast from the network device 130 above any of the unicast bearers and multicast bearers. Otherwise the field is absent.
  • Opt. 2 directly indicates if the UE prioritizes broadcast from the network device 130 above any of the unicast bearers and multicast bearers.
  • the terminal device 110 may transmit the message comprising the information regarding the reception of the broadcast service. In some embodiments, if a broadcast configuration received from the network device 130 is changed, the terminal device 110 may transmit the message comprising the information regarding the reception of the broadcast service. In some embodiments, if a timer (e.g., a prohibit timer) configured for the message is not running, the terminal device 110 may transmit the message comprising the information. In some embodiments where the message is transmitted, the terminal device 110 may start the timer.
  • a timer e.g., a prohibit timer
  • the terminal device 110 may transmit the message that does not comprise the information regarding the reception of the broadcast service. In some embodiments where the message is transmitted, the terminal device 110 may start the timer.
  • a timer e.g., a prohibit timer
  • UE may initiate the transmission of MII for broadcast reception from a non-serving gNB if the following condition is met:
  • the prohibit timer is optional.
  • the type of MII transmission is not limited by SIB21.
  • the network device 120 may transmit 330 a response to the message.
  • the network device 120 may transmit a newly defined radio resource control (RRC) message (e.g., MIIResponse) as the response.
  • RRC radio resource control
  • the network device 120 may transmit a RRCReconfiguration message as the response.
  • the response may comprise an indication (e.g., BcastReceptionIndication) indicating whether the request is refused or allowed.
  • the network device 120 may transmit, to the terminal device 110, the response comprising an indication (for convenience, also referred to as a first indication herein) indicating that the network device 120 allows the reception of the broadcast service from the network device 130.
  • an indication for convenience, also referred to as a first indication herein
  • the network device 120 may transmit, to the terminal device 110, the response comprising an indication (for convenience, also referred to as a second indication herein) indicating that the network device 120 refuses the reception of the broadcast service from the network device 130. In some alternative embodiments, if the reception of the broadcast service from the network device 130 is refused, the network device 120 may not transmit, to the terminal device 110, the response to the message.
  • the network device 120 may determine that the terminal device 110 has left the broadcast service.
  • the terminal device 110 may wait for a response from the network device 120 before starting to receive the broadcast service from the network device 130.
  • the terminal device 110 may receive 340 the broadcast service from the network device 130. In some embodiments, if the response comprises an indication indicating that the network device 120 refuses the reception of the broadcast service from the network device 130, the terminal device 110 may not receive the broadcast service from the network device 130. In some embodiments, if no response to the message is received from the network device 120, the terminal device 110 may not receive the broadcast service from the network device 130.
  • the UE Upon transmission of MII message for a non-serving gNB, the UE shall:
  • a terminal device may know whether to receive a broadcast service from a non-serving gNB.
  • a serving gNB may need to modify a unicast configuration. If the unicast configuration occupies a resource of the broadcast service, the reception of the broadcast service may be impacted.
  • embodiments of the present disclosure also provide a solution to overcome this issue and other potential issues. For convenience, the solution may also be described with reference to FIG. 3.
  • the network device 120 may transmit 350, to the terminal device 110 during the reception of the broadcast service, a configuration for a unicast service.
  • the network device 120 may transmit the configuration in dedicated RRC signaling, e.g., RRCReconfiguration, RRCResume, RRCSetup, or RRCReestablishment message. It is to be understood that any other suitable RRC signaling are also feasible.
  • the configuration comprises an indication (e.g., overlapSolvedForBcast) indicating whether the configuration for the unicast service is overlapped with a configuration for the broadcast service.
  • an indication e.g., overlapSolvedForBcast
  • a terminal device may be aware of whether the current configuration is overlapped so as to avoid the resource overlapping.
  • the terminal device 110 may stop 351 receiving the broadcast service from the network device 130. If the indication is an indication (for convenience, also referred to as a fourth indication herein) indicating that the configuration for the unicast service has no overlap with the configuration for the broadcast service, the terminal device 110 may continue receiving 352 the broadcast service from the network device 130.
  • the network device 120 may transmit 350’ , to the terminal device 110 during the reception of the broadcast service, a configuration for a unicast service that does not comprise the indication indicating whether the configuration for the unicast service is overlapped with the configuration for the broadcast service.
  • the terminal device 110 may stop 351’ receiving the broadcast service from the network device 130.
  • the terminal device 110 may also re-transmit 352’ , to the network device 120, the message requesting the reception of the broadcast service from the network device 130.
  • the terminal device 110 may start a timer (e.g., a prohibit timer) configured for the message based on re-transmission of the message.
  • the UE shall perform the following action upon reception of dedicated RRC signaling:
  • a network may indicate whether the current configuration is overlapped with the resource of broadcast reception.
  • the terminal device 110 may determine 350” , based on its implementation, whether the configuration for the unicast service is overlapped with the configuration for the broadcast service. If the received configuration for the unicast service is overlapped with the resource for the broadcast service, the terminal device 110 may stop receiving the broadcast service from the network device 130, and re-transmit, to the network device 120, the message requesting the reception of the broadcast service from the network device 130. If the received configuration for the unicast service is not overlapped with the resource for the broadcast service, the terminal device 110 may continue receiving the broadcast service from the network device 130.
  • the UE shall perform the following action upon reception of dedicated RRC signaling:
  • a terminal device may decide whether the current configuration is overlapped with the resource of broadcast reception.
  • embodiments of the present disclosure also provide a solution to overcome this issue and other potential issues. For convenience, the solution may also be described with reference to FIG. 3.
  • the network device 120 may transmit 360, to the terminal device 110, a configuration indicating a threshold value for comparison with a value of a parameter of the broadcast service.
  • the network device 120 may transmit the configuration via a RRC signaling.
  • the network device 120 may transmit the configuration via system information. It is to be understood that any other suitable ways are also feasible.
  • the configuration may be optional.
  • the threshold value may be predefined.
  • the terminal device 110 may compare 361 a value of a parameter of the broadcast service with the threshold value. If the value of the parameter of the broadcast service is above (e.g., higher than or equal to) the threshold value, the terminal device 110 may cancel 362 transmission of the message comprising the information regarding reception of the broadcast service, and may also cancel the reception of the broadcast service. In this way, it is ensured that broadcast reception from a non-serving gNB will not cause huge impact on unicast reception from a serving gNB.
  • the parameter may be a frequency domain parameter.
  • the parameter may be a bandwidth of the broadcast service or any other suitable frequency domain parameters.
  • the threshold value may be a threshold value in frequency domain (e.g., threshod_FrequencyDomain) .
  • the terminal device 110 may compare a value of a frequency domain parameter of the broadcast service with the threshod_FrequencyDomain. If the value of the frequency domain parameter of the broadcast service is above the threshod_FrequencyDomain, the terminal device 110 may not transmit MII and also not receive the broadcast service from the non-serving gNB.
  • the unit of the threshod_FrequencyDomain corresponds to the unit of bandwidth of the broadcast service.
  • the parameter may be a time domain parameter.
  • the parameter may be a duration of the broadcast service, e.g., an on-duration timer or an inactivity timer in DRX configuration, or any other suitable time domain parameters.
  • the threshold value may be a threshold value in time domain (e.g., threshod_TimeDomain) .
  • the terminal device 110 may compare a time domain parameter of the broadcast service with the threshod_TimeDomain.
  • the terminal device 110 may not transmit MII and also not receive the broadcast service from the non-serving gNB.
  • the unit of the threshod_TimeDomain corresponds to the unit of the time domain parameter of the broadcast service.
  • the UE shall not initiate the transmission of MII message for broadcast reception from the non-serving gNB;
  • the UE shall not receive broadcast session from the non-serving gNB.
  • the UE may initiate the transmission of MII message for broadcast reception from the non-serving gNB.
  • embodiments of the present disclosure provide methods of communication implemented at a terminal device and a network device. These methods will be described below with reference to FIGs. 4 to 5.
  • FIG. 4 illustrates an example method 400 of communication implemented at a terminal device in accordance with some embodiments of the present disclosure.
  • the method 400 may be performed at the terminal device 110 as shown in FIG. 1.
  • the method 400 will be described with reference to FIG. 1. It is to be understood that the method 400 may include additional blocks not shown and/or may omit some blocks as shown, and the scope of the present disclosure is not limited in this regard.
  • a terminal device determines that a broadcast service is to be received from a first network device (e.g., the network device 130) .
  • the terminal device 110 transmits, to a second network device (e.g., the network device 120) , a message requesting reception of the broadcast service from the first network device, the message comprising information regarding the reception of the broadcast service from the first network device.
  • a second network device e.g., the network device 120
  • the information may comprise at least one of the following: identity information of the network device 130; a duration for which the terminal device expects to receive the broadcast service from the network device 130; information of discontinuous reception for the broadcast service; priority information indicating whether the broadcast service is prioritized over unicast and multicast services; or information of a frequency domain resource in which the network device 130 provides the broadcast service.
  • identity information may comprise at least one of the following: a public land mobile network identity; a cell identity; or a physical cell identity.
  • the terminal device 110 may transmit the message comprising the information if the message has not been transmitted since the terminal device 110 enters a connected state. In some embodiments, if a broadcast configuration received from the network device 130 is changed, the terminal device 110 may transmit the message comprising the information. In some additional embodiments, if a timer configured for the message is not running, the terminal device 110 may transmit the message comprising the information.
  • the terminal device 110 may transmit the message that does not comprise the information. In some embodiments, the terminal device 110 may start the timer based on transmission of the message.
  • the terminal device 110 may receive, from the second network device, a response to the message. If the response comprises a first indication indicating that the network device 120 allows the reception of the broadcast service from the network device 130, the terminal device 110 may receive the broadcast service from the network device 130. If the response comprises a second indication indicating that the network device 120 refuses the reception of the broadcast service from the network device 130, the terminal device 110 may not receive the broadcast service from the network device 130. In some embodiments, if no response to the message is received from the network device 120, the terminal device 110 may not receive the broadcast service from the network device 130.
  • the terminal device 110 may receive, during the reception of the broadcast service, a configuration for a unicast service from the network device 120. If the configuration comprises a third indication indicating that the configuration for the unicast service is overlapped with a configuration for the broadcast service, the terminal device 110 may stop receiving the broadcast service from the network device 130.
  • the terminal device 110 may continue receiving the broadcast service from the network device 130. If the configuration comprises no indication indicating whether the configuration for the unicast service is overlapped with the configuration for the broadcast service, the terminal device 110 may stop receiving the broadcast service from the network device 130, and re-transmit the message to the network device 120.
  • the terminal device 110 may receive, during the reception of the broadcast service, a configuration for a unicast service from the network device 120. If the configuration for the unicast service has no overlap with a configuration for the broadcast service, the terminal device 110 may continue receiving the broadcast service from the network device 130. If the configuration for the unicast service is overlapped with the configuration for the broadcast service, the terminal device 110 may stop receiving the broadcast service from the network device 130, and re-transmit the message to the network device 120. In some embodiments, the terminal device 110 may start a timer configured for the message based on re-transmission of the message.
  • the terminal device 110 may compare a value of a parameter of the broadcast service with a threshold value. If the value of the parameter of the broadcast service is above the threshold value, the terminal device 110 may cancel transmission of the message and reception of the broadcast service. In some embodiments, the terminal device 110 may receive, from the network device 120, a configuration indicating the threshold value.
  • a mechanism of broadcast reception from a non-serving gNB is enhanced at a terminal device.
  • FIG. 5 illustrates an example method 500 of communication implemented at a network device in accordance with some embodiments of the present disclosure.
  • the method 500 may be performed at the network device 120 as shown in FIG. 1.
  • the method 500 will be described with reference to FIG. 1. It is to be understood that the method 500 may include additional blocks not shown and/or may omit some blocks as shown, and the scope of the present disclosure is not limited in this regard.
  • a second network device receives, from a terminal device (e.g., the terminal device 110) , a message requesting reception of a broadcast service from a first network device (e.g., the network device 130) , the message comprising information regarding the reception of the broadcast service from the network device 130.
  • the information may comprise at least one of the following: identity information of the network device 130; a duration for which the terminal device expects to receive the broadcast service from the network device 130; information of discontinuous reception for the broadcast service; priority information indicating whether the broadcast service is prioritized over unicast and multicast services; or information of a frequency domain resource in which the network device 130 provides the broadcast service.
  • identity information may comprise at least one of the following: a public land mobile network identity; a cell identity; or a physical cell identity.
  • the network device 120 may receive the message that does not comprise the information.
  • the network device 120 may transmit, to the terminal device 110, a response to the message comprising a first indication indicating that the network device 120 allows the reception of the broadcast service from the network device 130.
  • the network device 120 may transmit, to the terminal device 110, a response to the message comprising a second indication indicating that the network device 120 refuses the reception of the broadcast service from the network device 130.
  • the network device 120 may not transmit, to the terminal device 110, the response to the message.
  • the network device 120 may transmit, to the terminal device 110 during the reception of the broadcast service, a configuration for a unicast service comprising an indication indicating whether the configuration for the unicast service is overlapped with a configuration for the broadcast service.
  • the network device 120 may transmit, to the terminal device 110 during the reception of the broadcast service, a configuration for a unicast service comprising no indication indicating whether the configuration for the unicast service is overlapped with a configuration for the broadcast service, and receive the message re-transmitted by the terminal device 110.
  • the network device 120 may transmit, to the terminal device 110, a configuration indicating a threshold value for comparison with a value of a parameter of the broadcast service.
  • a mechanism of broadcast reception from a non-serving gNB is enhanced at a network device.
  • FIG. 6 is a simplified block diagram of a device 600 that is suitable for implementing embodiments of the present disclosure.
  • the device 600 can be considered as a further example implementation of the terminal device 110 or the network device 120 as shown in FIG. 1. Accordingly, the device 600 can be implemented at or as at least a part of the terminal device 110 or the network device 120.
  • the device 600 includes a processor 610, a memory 620 coupled to the processor 610, a suitable transmitter (TX) and receiver (RX) 640 coupled to the processor 610, and a communication interface coupled to the TX/RX 640.
  • the memory 610 stores at least a part of a program 630.
  • the TX/RX 640 is for bidirectional communications.
  • the TX/RX 640 has at least one antenna to facilitate communication, though in practice an Access Node mentioned in this application may have several ones.
  • the communication interface may represent any interface that is necessary for communication with other network elements, such as X2/Xn interface for bidirectional communications between eNBs/gNBs, S1/NG interface for communication between a Mobility Management Entity (MME) /Access and Mobility Management Function (AMF) /SGW/UPF and the eNB/gNB, Un interface for communication between the eNB/gNB and a relay node (RN) , or Uu interface for communication between the eNB/gNB and a terminal device.
  • MME Mobility Management Entity
  • AMF Access and Mobility Management Function
  • RN relay node
  • Uu interface for communication between the eNB/gNB and a terminal device.
  • the program 630 is assumed to include program instructions that, when executed by the associated processor 610, enable the device 600 to operate in accordance with the embodiments of the present disclosure, as discussed herein with reference to FIGs. 1 to 6.
  • the embodiments herein may be implemented by computer software executable by the processor 610 of the device 600, or by hardware, or by a combination of software and hardware.
  • the processor 610 may be configured to implement various embodiments of the present disclosure.
  • a combination of the processor 610 and memory 620 may form processing means 650 adapted to implement various embodiments of the present disclosure.
  • the memory 620 may be of any type suitable to the local technical network and may be implemented using any suitable data storage technology, such as a non-transitory computer readable storage medium, semiconductor based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory, as non-limiting examples. While only one memory 620 is shown in the device 600, there may be several physically distinct memory modules in the device 600.
  • the processor 610 may be of any type suitable to the local technical network, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples.
  • the device 600 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock which synchronizes the main processor.
  • a terminal device comprises a circuitry configured to: determine that a broadcast service is to be received from a first network device; and transmit, to a second network device, a message requesting reception of the broadcast service from the first network device, the message comprising information regarding the reception of the broadcast service from the first network device.
  • a second network device comprises a circuitry configured to:receive, from a terminal device, a message requesting reception of a broadcast service from a first network device, the message comprising information regarding the reception of the broadcast service from the first network device.
  • circuitry used herein may refer to hardware circuits and/or combinations of hardware circuits and software.
  • the circuitry may be a combination of analog and/or digital hardware circuits with software/firmware.
  • the circuitry may be any portions of hardware processors with software including digital signal processor (s) , software, and memory (ies) that work together to cause an apparatus, such as a terminal device or a network device, to perform various functions.
  • the circuitry may be hardware circuits and or processors, such as a microprocessor or a portion of a microprocessor, that requires software/firmware for operation, but the software may not be present when it is not needed for operation.
  • the term circuitry also covers an implementation of merely a hardware circuit or processor (s) or a portion of a hardware circuit or processor (s) and its (or their) accompanying software and/or firmware.
  • embodiments of the present disclosure may provide the following solutions.
  • a method of communication comprises: determining, at a terminal device, that a broadcast service is to be received from a first network device; and transmitting, to a second network device, a message requesting reception of the broadcast service from the first network device, the message comprising information regarding the reception of the broadcast service from the first network device.
  • the information comprises at least one of the following: identity information of the first network device; a duration for which the terminal device expects to receive the broadcast service from the first network device; information of discontinuous reception for the broadcast service; priority information indicating whether the broadcast service is prioritized over unicast and multicast services; or information of a frequency domain resource in which the first network device provides the broadcast service.
  • the identity information comprises at least one of the following: a public land mobile network identity; a cell identity; or a physical cell identity.
  • transmitting the message comprises: in accordance with a determination that the message has not been transmitted since the terminal device enters a connected state, transmitting the message comprising the information; or in accordance with a determination that a broadcast configuration received from the first network device is changed, transmitting the message comprising the information.
  • transmitting the message further comprises: in accordance with a determination that a timer configured for the message is not running, transmitting the message comprising the information.
  • the method above further comprises: in accordance with a determination that the terminal device leaves the broadcast service from the first network device and a timer configured for the message is not running, transmitting the message that does not comprise the information.
  • the method above further comprises: starting the timer based on transmission of the message.
  • the method above further comprises: receiving, from the second network device, a response to the message; in accordance with a determination that the response comprises a first indication indicating that the second network device allows the reception of the broadcast service from the first network device, receiving the broadcast service from the first network device; and in accordance with a determination that the response comprises a second indication indicating that the second network device refuses the reception of the broadcast service from the first network device, receiving no broadcast service from the first network device.
  • the method above further comprises: in accordance with a determination that no response to the message is received from the second network device, receiving no broadcast service from the first network device.
  • the method above further comprises: receiving, during the reception of the broadcast service, a configuration for a unicast service from the second network device; in accordance with a determination that the configuration comprises a third indication indicating that the configuration for the unicast service is overlapped with a configuration for the broadcast service, stopping receiving the broadcast service from the first network device; in accordance with a determination that the configuration comprises a fourth indication indicating that the configuration for the unicast service has no overlap with the configuration for the broadcast service, continuing receiving the broadcast service from the first network device; and in accordance with a determination that the configuration comprise no indication indicating whether the configuration for the unicast service is overlapped with the configuration for the broadcast service, stopping receiving the broadcast service from the first network device; and re-transmitting the message to the second network device.
  • the method above further comprises: receiving, during the reception of the broadcast service, a configuration for a unicast service from the second network device; in accordance with a determination that the configuration for the unicast service has no overlap with a configuration for the broadcast service, continuing receiving the broadcast service from the first network device; and in accordance with a determination that the configuration for the unicast service is overlapped with the configuration for the broadcast service, stopping receiving the broadcast service from the first network device; and re-transmitting the message to the second network device.
  • the method above further comprises: starting a timer configured for the message based on re-transmission of the message.
  • the method above further comprises: comparing a value of a parameter of the broadcast service with a threshold value; and in accordance with a determination that the value of the parameter of the broadcast service is above the threshold value, cancelling transmission of the message and reception of the broadcast service.
  • the method above further comprises: receiving, from the second network device, a configuration indicating the threshold value.
  • a method of communication comprises: receiving, at a second network device and from a terminal device, a message requesting reception of a broadcast service from a first network device, the message comprising information regarding the reception of the broadcast service from the first network device.
  • the information further comprises at least one of the following: identity information of the first network device; a duration for which the terminal device expects to receive the broadcast service from the first network device; information of discontinuous reception for the broadcast service; priority information indicating whether the broadcast service is prioritized over unicast and multicast services; or information of a frequency domain resource in which the first network device provides the broadcast service.
  • the identity information comprises at least one of the following: a public land mobile network identity; a cell identity; or a physical cell identity.
  • the method above further comprises: receiving the message that does not comprise the information.
  • the method above further comprises: in accordance with a determination that the reception of the broadcast service from the first network device is allowed, transmitting, to the terminal device, a response to the message comprising a first indication indicating that the second network device allows the reception of the broadcast service from the first network device; and in accordance with a determination that the reception of the broadcast service from the first network device is refused, transmitting, to the terminal device, a response to the message comprising a second indication indicating that the second network device refuses the reception of the broadcast service from the first network device, or transmitting, to the terminal device, no response to the message.
  • the method above further comprises: transmitting, to the terminal device during the reception of the broadcast service, a configuration for a unicast service comprising an indication indicating whether the configuration for the unicast service is overlapped with a configuration for the broadcast service.
  • the method above further comprises: transmitting, to the terminal device during the reception of the broadcast service, a configuration for a unicast service comprising no indication indicating whether the configuration for the unicast service is overlapped with a configuration for the broadcast service; and receiving the message re-transmitted by the terminal device.
  • the method above further comprises: transmitting, to the terminal device, a configuration indicating a threshold value for comparison with a value of a parameter of the broadcast service.
  • a device of communication comprises: a processor configured to cause the device to perform the method according to any of the above methods.
  • various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. While various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using some other pictorial representation, it will be appreciated that the blocks, apparatus, systems, techniques or methods described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
  • the present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer readable storage medium.
  • the computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target real or virtual processor, to carry out the process or method as described above with reference to FIGs. 1 to 5.
  • program modules include routines, programs, libraries, objects, classes, components, data structures, or the like that perform particular tasks or implement particular abstract data types.
  • the functionality of the program modules may be combined or split between program modules as desired in various embodiments.
  • Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed device, program modules may be located in both local and remote storage media.
  • Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowcharts and/or block diagrams to be implemented.
  • the program code may execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
  • the above program code may be embodied on a machine readable medium, which may be any tangible medium that may contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
  • the machine readable medium may be a machine readable signal medium or a machine readable storage medium.
  • a machine readable medium may include but not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing.
  • machine readable storage medium More specific examples of the machine readable storage medium would include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM) , a read-only memory (ROM) , an erasable programmable read-only memory (EPROM or Flash memory) , an optical fiber, a portable compact disc read-only memory (CD-ROM) , an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
  • RAM random access memory
  • ROM read-only memory
  • EPROM or Flash memory erasable programmable read-only memory
  • CD-ROM portable compact disc read-only memory
  • magnetic storage device or any suitable combination of the foregoing.

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

Abstract

Les modes de réalisation de la présente divulgation concernent des procédés, des dispositifs et des supports lisibles par ordinateur de communication. Selon le procédé, un dispositif terminal détermine qu'un service de diffusion doit être reçu d'un premier dispositif de réseau, et transmet, à un second dispositif de réseau, un message demandant la réception du service de diffusion en provenance du premier dispositif de réseau, le message comprenant des informations concernant la réception du service de diffusion en provenance du premier dispositif de réseau. De cette manière, la gestion d'un réseau peut être facilitée et la réception de diffusion MBS peut être améliorée.
PCT/CN2022/128259 2022-10-28 2022-10-28 Procédé, dispositif et support de stockage informatique de communication WO2024087170A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113260005A (zh) * 2020-02-13 2021-08-13 华为技术有限公司 关口站切换的方法和装置
CN114157398A (zh) * 2020-09-08 2022-03-08 华为技术有限公司 一种上行反馈方法及装置
CN114600525A (zh) * 2019-11-08 2022-06-07 华为技术有限公司 一种通信方法及装置
WO2022151448A1 (fr) * 2021-01-15 2022-07-21 华为技术有限公司 Procédé et appareil de commande de réception discontinue

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114600525A (zh) * 2019-11-08 2022-06-07 华为技术有限公司 一种通信方法及装置
CN113260005A (zh) * 2020-02-13 2021-08-13 华为技术有限公司 关口站切换的方法和装置
CN114157398A (zh) * 2020-09-08 2022-03-08 华为技术有限公司 一种上行反馈方法及装置
WO2022151448A1 (fr) * 2021-01-15 2022-07-21 华为技术有限公司 Procédé et appareil de commande de réception discontinue

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