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WO2025065167A1 - Dispositifs et procédés de communication - Google Patents

Dispositifs et procédés de communication Download PDF

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Publication number
WO2025065167A1
WO2025065167A1 PCT/CN2023/121200 CN2023121200W WO2025065167A1 WO 2025065167 A1 WO2025065167 A1 WO 2025065167A1 CN 2023121200 W CN2023121200 W CN 2023121200W WO 2025065167 A1 WO2025065167 A1 WO 2025065167A1
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WO
WIPO (PCT)
Prior art keywords
status
reporting
delayed data
determination
accordance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2023/121200
Other languages
English (en)
Inventor
Jinhui WEN
Gang Wang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to PCT/CN2023/121200 priority Critical patent/WO2025065167A1/fr
Publication of WO2025065167A1 publication Critical patent/WO2025065167A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network

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 a delay status reporting (DSR) .
  • DSR delay status reporting
  • DSR means a reporting of a status of delayed data in a buffer. It has been agreed that a separate medium access control control element (MAC CE) for DSR may be defined, which is not coupled with a buffer status reporting (BSR) . However, a solution of DSR in this case is still incomplete and needs to be further developed.
  • MAC CE medium access control control element
  • embodiments of the present disclosure provide methods, devices and computer storage media of communication for DSR.
  • a terminal device comprising a processor configured to cause the terminal device to: receive, from a network device, a configuration for a reporting of a status of delayed data; in accordance with a determination that a condition for triggering the reporting of the status of delayed data is fulfilled, trigger the reporting of the status of delayed data; and in accordance with a determination that a condition for cancelling the reporting of the status of delayed data is fulfilled, cancel the reporting of the status of delayed data.
  • a network device comprising a processor configured to cause the network device to: transmit, to a terminal device, a configuration for a reporting of a status of delayed data; and receive, from the terminal device, a MAC CE for the reporting of the status of delayed data.
  • a method of communication comprises: receiving, at a terminal device and from a network device, a configuration for a reporting of a status of delayed data; in accordance with a determination that a condition for triggering the reporting of the status of delayed data is fulfilled, triggering the reporting of the status of delayed data; and in accordance with a determination that a condition for cancelling the reporting of the status of delayed data is fulfilled, cancelling the reporting of the status of delayed data.
  • a method of communication comprises: transmitting, at a network device and to a terminal device, a configuration for a reporting of a status of delayed data; and receive, from the terminal device, a MAC CE for the reporting of the status of delayed data.
  • 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 third or fourth aspect of the present disclosure.
  • FIG. 1 illustrates an example communication network in which some embodiments of the present disclosure can be implemented
  • FIG. 2 illustrates a schematic diagram illustrating a process of communication according to embodiments of the present disclosure
  • FIG. 3 illustrates an example method of communication implemented at a terminal device in accordance with some embodiments of the present disclosure
  • FIG. 4 illustrates an example method of communication implemented at a network device in accordance with some embodiments of the present disclosure.
  • FIG. 5 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 incorporate 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.
  • the term “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
  • 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.
  • the term “above” herein may be interchangeably used with “higher than or equal to” or “greater than or equal to” .
  • the term “below” herein may be interchangeably used with “lower than or equal to” or “smaller than or equal to” .
  • the term “DSR” herein may be interchangeably used with “a reporting of a status of delayed data in a buffer” or “a reporting of a status of delayed data” .
  • the term “delayed data” may refer to data whose remaining delay budget is lower than a configured threshold.
  • the term “a status of delayed data” may also be referred to as a delayed buffer status.
  • the delayed buffer status may include at least delayed buffer size and/or remaining delay information.
  • the network and UE may only care about logical channels for delay-sensitive traffic.
  • the term “MAC CE for DSR” may also be referred to as DSR MAC CE or BSR MAC CE with delay status information.
  • XR extended reality
  • PDB packet delay budget
  • PDU protocol data unit
  • PSDB protocol data unit set delay budget
  • UL uplink resources should be allocated before then.
  • the network may have flexibility to schedule a UL grant considering the remaining delay budget without exceeding the PDB or PSDB, and hence improve capacity by prioritizing a scheduling of corresponding delayed data.
  • Embodiments of the present disclosure provide a solution of communication for DSR.
  • a terminal device receives, from a network device, a configuration for a reporting of a status of delayed data. If a condition for triggering the reporting of the status of delayed data is fulfilled, the terminal device triggers the reporting of the status of delayed data. If a condition for cancelling the reporting of the status of delayed data is fulfilled, the terminal device cancels the reporting of the status of delayed data.
  • DSR may be managed in a well-defined way. DSR may be transmitted as soon as possible and transmission delay of delayed data may be shortened.
  • 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 and a network device 120.
  • the terminal device 110 may be served by the network device 120.
  • the communication network 100 may include any suitable number of network devices and/or terminal devices adapted for implementing implementations of the present disclosure.
  • the terminal device 110 may communicate with the network device 120 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-A LTE-evolution
  • LTE-advanced 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.
  • the terminal device 110 may need to quickly notify the network device 120, to let the network device 120 know that the terminal device 110 has a delayed or urgent packet to be scheduled for transmission. In this case, the terminal device 110 may need to transmit a DSR to the network device 120.
  • a packet e.g., a PDU set
  • the terminal device 110 may need to transmit a DSR to the network device 120.
  • a DSR may be retransmitted. If a DSR is not retransmitted in time, remaining delay budget of data (e.g., service data unit (SDU) or PDU set) may be exhausted and the retransmitted DSR may be useless. Further, to avoid frequent DSR transmission, a medium access control (MAC) entity of a terminal device may be prohibited to transmit a DSR for a period of time after a DSR is transmitted. Furthermore, when performing a logical channel prioritization (LCP) procedure, a priority of a MAC CE for DSR needs to be considered.
  • LCP logical channel prioritization
  • a discard operation e.g., a network-triggered discard caused by congestion, or a packet data convergence protocol (PDCP) discard timer expires
  • PDCP packet data convergence protocol
  • embodiments of the present disclosure provide a solution of communication for DSR so as to overcome the above and other potential issues.
  • the solution will be described in detail with reference to FIG. 2.
  • FIG. 2 illustrates a schematic diagram illustrating a process 200 of communication according to embodiments of the present disclosure.
  • the process 200 will be described with reference to FIG. 1.
  • the process 200 may involve the terminal device 110 and the network device 120 as illustrated in FIG. 1.
  • the steps and the order of the steps in FIG. 2 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 suitable additional steps may be added.
  • the capability information may comprise information indicating whether the terminal device 110 supports a delay timer for a scheduling request (SR) triggered by the reporting of the status of delayed data for a logical channel (LCH) .
  • the capability information may comprise information indicating whether the terminal device 110 supports a logical channel SR delay timer for DSR.
  • the network may properly configure a DSR operation.
  • the network device 120 may transmit 220, to the terminal device 110, a configuration for a reporting of a status of delayed data (i.e., DSR) .
  • the terminal device 110 may transmit the configuration via an RRC signaling. It is to be understood that any other suitable ways are also feasible.
  • the first predetermined value may be 100 subframes. It is to be understood that this is merely an example, and any other suitable values or units are also feasible. For illustration, an example configuration of the DSR retransmission timer may be described as below.
  • an information element (IE) “DSR-Config” denotes a configuration of DSR
  • an IE “retxDSR-Timer” denotes a DSR retransmission timer.
  • the value of the DSR retransmission timer may comprise 0, 1/2 subframe, 1 subframe, 2 subframes, 4 subframes, 5 subframes, 8 subframes, 10 subframes, 15 subframes, 16 subframes, 20 subframes, 30 subframes, 40 subframes, 50 subframes, 80 subframes or 100 subframes. It is to be understood that these values are merely examples, and do not make limitation for the present application.
  • DSR may be transmitted or retransmitted without delaying too much, and thus latency of DSR transmission or retransmission may be reduced.
  • the network device 120 may configure a second timer for prohibition of a trigger or transmission of DSR.
  • the second timer may also be referred to as a DSR prohibit timer (e.g., dsr-ProhibitTimer) or a DSR delay timer herein.
  • the configuration may comprise a second set of values (i.e., one or more values) of the second timer. Each value in the second set of values is below a second predetermined value. In other words, the second timer is short.
  • a terminal device may be prohibited to transmit a DSR for a period of time after a DSR is transmitted.
  • the second timer should be short enough to reduce latency.
  • the second predetermined value may be 100ms. It is to be understood that this is merely an example, and any other suitable values or units are also feasible. For illustration, an example configuration of the DSR prohibit timer may be described as below.
  • an information element (IE) “DSR-Config” denotes a configuration of DSR
  • an IE “dsr-ProhibitTimer” denotes a DSR prohibit timer.
  • the value of the DSR prohibit timer may comprise 0, 0.5ms, 1ms, 2ms, 4ms, 5ms, 8ms, 10ms, 15ms, 16ms, 20ms, 30ms, 40ms, 50ms, 80ms, or 100ms. It is to be understood that these values are merely examples, and do not make limitation for the present application.
  • the terminal device 110 may perform 230 a management (e.g., trigger, cancel, transmission or retransmission) of a DSR based on the configuration.
  • a management e.g., trigger, cancel, transmission or retransmission
  • the terminal device 110 may start or restart 231 the DSR retransmission timer. If no UL grant is received during running of the DSR retransmission timer, the terminal device 110 may retransmit 232 the DSR.
  • the MAC entity shall:
  • uplink shared channel (UL-SCH) resources are available for a new transmission and the UL-SCH resources can accommodate the MAC CE for DSR plus its subheader as a result of logical channel prioritization:
  • a MAC PDU may contain at most one MAC CE for DSR, even when multiple events have triggered a DSR.
  • the MAC entity shall restart retxDSR-Timer upon reception of a grant for transmission of new data on any UL-SCH.
  • the terminal device 110 may stop the DSR retransmission timer. In some embodiments, if there is no pending delayed data available for transmission, the terminal device 110 may stop the DSR retransmission timer.
  • the MAC entity may stop retxDSR-Timer if at least one of the following event happens.
  • stop retxDSR-Timer When there is no pending delayed data available for transmission (e.g., due to discard operation) , stop retxDSR-Timer.
  • the terminal device 110 may start or restart 233 the DSR prohibit timer. In some embodiments, if the DSR prohibit timer is running, the terminal device 110 may not trigger or transmit a MAC CE for DSR. In some embodiments, if the DSR prohibit timer is not running, the terminal device 110 may trigger or transmit a MAC CE for DSR.
  • the MAC entity shall:
  • the Delay Status reporting procedure determines that at least one DSR has been triggered and not cancelled, and if UL-SCH resources are available for a new transmission and the UL-SCH resources can accommodate the MAC CE for DSR plus its subheader as a result of logical channel prioritization:
  • more than 1 delay thresholds are configured (each of which may correspond to a different delay level or congestion level) , and more urgent data (for example, data whose remaining delay budget is lower than a delay threshold, and is lower than any other thresholds that has delayed data lower than them) is coming; or
  • an LCH that triggered the DSR is a highest priority LCH that has data available for transmission upon triggering of the DSR.
  • an LCH that triggers a DSR triggered by expiration of the first timer has a priority higher than a priority of an LCH that triggers a BSR triggered by expiration of a third timer (i.e., BSR retransmission timer) configured for retransmission of the BSR.
  • the logical channel that triggered a DSR which is triggered by retxDSR-Timer expiry has higher priority than the logical channel that triggered a BSR which is triggered by retxBSR-Timer expiry.
  • an example priority order of a MAC CE for DSR during an LCP procedure may be described as below.
  • Logical channels shall be prioritized in accordance with the following order (highest priority listed first) :
  • an example priority order of a MAC CE for DSR during LCP procedure may be described as below.
  • the terminal device 110 may cancel 235 the DSR.
  • the terminal device 110 may cancel all triggered DSRs.
  • all triggered DSR may be cancelled if there is no pending delayed data available for transmission or no delayed data in UL buffer.
  • there is no delayed data in UL buffer because of discard operation, or the remaining delay budget of data (e.g., an SDU or PDU set) is exhausted (e.g., a PDCP discard timer expires) , or other reasons.
  • the terminal device 110 may cancel all DSRs triggered prior to the assembly of the MAC PDU.
  • all DSRs triggered prior to MAC PDU assembly may be cancelled when a MAC PDU is transmitted and this PDU contains all pending delayed data up to (and including) the last event that triggered a DSR prior to the MAC PDU assembly.
  • a MAC PDU (for convenience, also referred to as a fourth MAC PDU herein) is transmitted and the MAC PDU comprises a MAC CE (for convenience, also referred to as a second MAC CE herein) for DSR comprising a delayed buffer status up to the last event that triggers a DSR prior to an assembly of the MAC PDU
  • the terminal device 110 may cancel all DSRs triggered prior to the assembly of the MAC PDU.
  • a condition for DSR cancellation may be defined. All triggered DSRs may be cancelled when the condition is fulfilled and radio resources may be saved.
  • DSR may be managed in a well-defined way. DSR may be transmitted as soon as possible and transmission delay of delayed data may be shortened. It is to be understood that operations in the process 200 may be carried out separately or in any suitable combination.
  • embodiments of the present disclosure provide methods of communication implemented at a terminal device and at a network device. These methods will be described below with reference to FIGs. 3 to 4.
  • FIG. 3 illustrates an example method 300 of communication implemented at a terminal device in accordance with some embodiments of the present disclosure.
  • the method 300 may be performed at the terminal device 110 as shown in FIG. 1.
  • the method 300 will be described with reference to FIG. 1. It is to be understood that the method 300 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.
  • the terminal device 110 receives, from the network device 120, a configuration for a reporting of a status of delayed data.
  • the configuration may comprise a first set of values of a first timer configured for retransmission of the reporting of the status of delayed data, the first set of values being below a first predetermined value.
  • the configuration may comprise a second set of values of a second timer configured for prohibition of the triggering or reporting of the status of delay data, the second set of values being below a second predetermined value.
  • the terminal device 110 may transmit, to the network device 120, capability information of the terminal device 110.
  • the capability information may comprise at least one of the following: information indicating whether the terminal device supports the reporting of the status of delayed data; information indicating a maximum number of logical channel groups for which the terminal device supports to report the status of delayed data; or information indicating whether the terminal device supports a delay timer for a scheduling request triggered by the reporting of the status of delayed data for a logical channel.
  • a network may properly configure a DSR operation.
  • the terminal device 110 triggers the reporting of the status of delayed data if a condition for triggering the reporting of the status of delayed data is fulfilled.
  • the terminal device 110 may trigger the reporting of the status of delayed data if a first timer configured for retransmission of the reporting of the status of delayed data expires, and at least one of logical channels in a logic channel group comprises delayed data.
  • the terminal device 110 may trigger the reporting of the status of delayed data.
  • the terminal device 110 may trigger the reporting of the status of delayed data if a second timer configured for prohibition of the reporting of the status of delay data expires, and at least one of logical channels in a logic channel group comprises delayed data.
  • the terminal device 110 may trigger the reporting of the status of delayed data.
  • the terminal device 110 may trigger the reporting of the status of delayed data.
  • the terminal device 110 may trigger the reporting of the status of delayed data.
  • the terminal device 110 may trigger the reporting of the status of delayed data.
  • the device 500 includes a processor 510, a memory 520 coupled to the processor 510, a suitable transceiver 540 coupled to the processor 510, and a communication interface coupled to the transceiver 540.
  • the memory 510 stores at least a part of a program 530.
  • the transceiver 540 may be for bidirectional communications or a unidirectional communication based on requirements.
  • the transceiver 540 may include at least one of a transmitter 542 or a receiver 544.
  • the transmitter 542 and the receiver 544 may be functional modules or physical entities.
  • the transceiver 540 has at least one antenna to facilitate communication, though in practice an Access Node mentioned in this application may have several ones.

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

Abstract

Des modes de réalisation de la présente divulgation concernent des dispositifs et des procédés de communication. Un dispositif terminal reçoit, en provenance d'un dispositif de réseau, une configuration pour un DSR. Si une condition de déclenchement d'un DSR est satisfaite, le dispositif terminal déclenche le DSR. Si une condition d'annulation du DSR est satisfaite, le dispositif terminal annule le DSR. De cette façon, un DSR peut être géré d'une manière bien définie. Un DSR peut être transmis dès que possible et le retard de transmission de données retardées peut être raccourci.
PCT/CN2023/121200 2023-09-25 2023-09-25 Dispositifs et procédés de communication Pending WO2025065167A1 (fr)

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Citations (3)

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Publication number Priority date Publication date Assignee Title
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US20180077594A1 (en) * 2015-04-01 2018-03-15 Zte Corporation Method for measuring and reporting data transmission delay, terminal, and storage medium
CN110574475A (zh) * 2017-05-05 2019-12-13 瑞典爱立信有限公司 Sr-bsr和资源管理

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
CN101610536A (zh) * 2008-06-20 2009-12-23 中兴通讯股份有限公司 一种在测量中控制多个测量结果上报的方法及终端
US20180077594A1 (en) * 2015-04-01 2018-03-15 Zte Corporation Method for measuring and reporting data transmission delay, terminal, and storage medium
CN110574475A (zh) * 2017-05-05 2019-12-13 瑞典爱立信有限公司 Sr-bsr和资源管理

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