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WO2024216844A1 - Procédés, dispositifs et systèmes pour assurer l'ordre de blocs de transport - Google Patents

Procédés, dispositifs et systèmes pour assurer l'ordre de blocs de transport Download PDF

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Publication number
WO2024216844A1
WO2024216844A1 PCT/CN2023/120874 CN2023120874W WO2024216844A1 WO 2024216844 A1 WO2024216844 A1 WO 2024216844A1 CN 2023120874 W CN2023120874 W CN 2023120874W WO 2024216844 A1 WO2024216844 A1 WO 2024216844A1
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Prior art keywords
tbs
network element
sequence information
level dci
dci
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PCT/CN2023/120874
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English (en)
Inventor
Yan Xue
Feng Xie
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ZTE Corp
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ZTE Corp
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Priority to PCT/CN2023/120874 priority Critical patent/WO2024216844A1/fr
Publication of WO2024216844A1 publication Critical patent/WO2024216844A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1822—Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling

Definitions

  • the present disclosure is directed generally to wireless communications. Particularly, the present disclosure relates to methods, devices, and systems for ensuring transport blocks (TBs) in order.
  • TBs transport blocks
  • Wireless communication technologies are moving the world toward an increasingly connected and networked society.
  • High-speed and low-latency wireless communications rely on efficient network resource management and allocation among one or more user equipment and one or more wireless access network nodes (including but not limited to base stations) .
  • a new generation network is expected to provide high speed, low latency and ultra-reliable communication capabilities and fulfill the requirements from different industries and users.
  • TBs in some implementations are out of order, so that the received TBs at the receiving end cannot be delivered from a lower layer to an upper layer in order.
  • the present disclosure describes various embodiments for ensuring TBs in order, addressing at least one of the issues/problems discussed above.
  • the various embodiments in the present disclosure may enhance performance of enhanced mobile broadband (eMBB) and/or ultra reliable low latency communication (URLLC) , and/or provide new scenarios ensuring TB in order for large bandwidth and low latency, improving a technology field in the wireless communication.
  • eMBB enhanced mobile broadband
  • URLLC ultra reliable low latency communication
  • This document relates to methods, systems, and devices for wireless communication, and more specifically, for ensuring transport blocks (TBs) in order.
  • TBs transport blocks
  • the present disclosure describes a method for ensuring transport blocks (TBs) in order in wireless communication.
  • the method includes receiving, from a first network element by a second network element, sequence information associated with transport blocks (TBs) ; receiving, by the second network element, the TBs from the first network element; and delivering, by the second network element, the received TBs from a lower layer to an upper layer in order according to the sequence information associated with the TBs.
  • the present disclosure describes a method for ensuring transport blocks (TBs) in order in wireless communication.
  • the method includes transmitting, by a first network element to a second network element, sequence information associated with TBs to indicate the second network element delivering the received TBs from a lower layer to an upper layer in order; and transmitting, by the first network element, the TBs to the second network element.
  • the present disclosure describes a method for ensuring transport blocks (TBs) in order in wireless communication.
  • the method includes generating, by a third network element, sequence information associated with TBs to indicate a second network element delivering the TBs from a lower layer to an upper layer in order; and transmitting, by the third network element to a first network element, sequence information associated with TBs.
  • an apparatus for wireless communication may include a memory storing instructions and a processing circuitry in communication with the memory.
  • the processing circuitry executes the instructions, the processing circuitry is configured to carry out the above methods.
  • FIG. 1 shows an example of a wireless communication system include one wireless network node and one or more user equipment.
  • FIG. 2 shows an example of a network node.
  • FIG. 3 shows an example of a user equipment.
  • FIG. 4A shows a flow diagram of an exemplary method for wireless communication.
  • FIG. 4B shows a flow diagram of another exemplary method for wireless communication.
  • FIG. 4C shows a flow diagram of another exemplary method for wireless communication.
  • FIG. 5 shows a schematic diagram of an exemplary embodiment for wireless communication.
  • FIG. 6 shows a schematic diagram of another exemplary embodiment for wireless communication.
  • FIG. 7 shows a schematic diagram of another exemplary embodiment for wireless communication.
  • the present disclosure describes various methods and devices for ensuring transport blocks (TBs) in order.
  • New generation (NG) mobile communication system are moving the world toward an increasingly connected and networked society.
  • High-speed and low-latency wireless communications rely on efficient network resource management and allocation among one or more user equipment and one or more wireless access network nodes (including but not limited to wireless base stations) .
  • a new generation network is expected to provide high speed, low latency and ultra-reliable communication capabilities and fulfill the requirements from different industries and users.
  • Some services such as holographic communication, industrial internet traffic and immersive cloud extended reality (XR) , need to meet both ultra-high throughput and ultra-low latency at the same time.
  • This type of services integrates the characteristics of the two scenarios of high performance and high efficiency wireless networks: extremely high requirements for throughput, but also high requirements for low latency.
  • the large bandwidth, high throughput, and low latency scenarios may need the reliable transmission of data at a large volume under low-latency requirements.
  • user data may be divided into multiple small packets for transmission (for example, transport blocks (TBs) ) .
  • transport blocks for example, transport blocks (TBs)
  • data packets may need to be retransmitted to meet performance requirements.
  • retransmission may change the order of data packets arriving at the receiving end.
  • TBs may be used as the time domain transmission unit to schedule transmission at the medium access control (MAC) layer.
  • MAC medium access control
  • the service data flow of the application layer may be processed by the MAC layer and becomes a TB, and the TB may be processed by the physical layer such as coding and modulation and then sent out through the physical channel.
  • each received TB may be independently decoded and fed back, and each successfully decoded TB may be independently delivered to the MAC layer.
  • the MAC layer may use a hybrid automatic repeat request (HARQ) mechanism for fast retransmission.
  • HARQ hybrid automatic repeat request
  • the HARQ process may be responsible for transmitting TB data on the physical layer, and each TB may be allocated an available HARQ process.
  • the receiver may receive the TB data and send feedback of the TB data.
  • ACK acknowledgement
  • NACK negative-acknowledgment
  • the order of the original TBs is TB1 (first) and TB2 (last) , i.e., the TB1 should be earlier in time than the TB2 for the traffic. But when TB1 is retransmitted because of transmission failure, the TB2 may be delivered in front of the TB1, and the TBs in MAC layer may be out of order.
  • data in MAC layer may also be out of order.
  • the MAC layer does not ensure the TBs in order, and data packets are out of order after being transmitted through the air interface, causing the data to be out of order when delivered to the upper layer.
  • the present disclosure describes various embodiments for ensuring TBs in order, addressing at least one of the issues/problems discussed above.
  • the various embodiments in the present disclosure may enhance performance of enhanced mobile broadband (eMBB) and/or ultra reliable low latency communication (URLLC) , and/or provide new scenarios ensuring TB transport in order for large bandwidth and low latency, improving a technology field in the wireless communication.
  • eMBB enhanced mobile broadband
  • URLLC ultra reliable low latency communication
  • FIG. 1 shows a wireless communication system 100 including a wireless network node 118 and one or more user equipment (UE) 110.
  • the wireless network node may include a network base station, which may be a nodeB (NB, e.g., a gNB) or a RAN node in a mobile telecommunications context.
  • NB nodeB
  • Each of the UE may wirelessly communicate with the wireless network node via one or more radio channels 115 for downlink/uplink communication.
  • a first UE 110 may wirelessly communicate with a wireless network node 118 via a channel including a plurality of radio channels during a certain period of time.
  • the network base station 118 may send high layer signaling to the UE 110.
  • the high layer signaling may include configuration information for communication between the UE and the base station.
  • the high layer signaling may include a radio resource control (RRC) message.
  • RRC radio resource control
  • FIG. 2 shows an example of electronic device 200 to implement a network base station.
  • the example electronic device 200 may include radio transmitting/receiving (Tx/Rx) circuitry 208 to transmit/receive communication with UEs and/or other base stations.
  • the electronic device 200 may also include network interface circuitry 209 to communicate the base station with other base stations and/or a core network, e.g., optical or wireline interconnects, Ethernet, and/or other data transmission mediums/protocols.
  • the electronic device 200 may optionally include an input/output (I/O) interface 206 to communicate with an operator or the like.
  • I/O input/output
  • the electronic device 200 may also include system circuitry 204.
  • System circuitry 204 may include processor (s) 221 and/or memory 222.
  • Memory 222 may include an operating system 224, instructions 226, and parameters 228.
  • Instructions 226 may be configured for the one or more of the processors 124 to perform the functions of the network node.
  • the parameters 228 may include parameters to support execution of the instructions 226. For example, parameters may include network protocol settings, bandwidth parameters, radio frequency mapping assignments, and/or other parameters.
  • FIG. 3 shows an example of an electronic device to implement a terminal device 300 (for example, user equipment (UE) ) .
  • the UE 300 may be a mobile device, for example, a smart phone or a mobile communication module disposed in a vehicle.
  • the UE 300 may include communication interfaces 302, a system circuitry 304, an input/output interfaces (I/O) 306, a display circuitry 308, and a storage 309.
  • the display circuitry may include a user interface 310.
  • the system circuitry 304 may include any combination of hardware, software, firmware, or other logic/circuitry.
  • the system circuitry 304 may be implemented, for example, with one or more systems on a chip (SoC) , application specific integrated circuits (ASIC) , discrete analog and digital circuits, and other circuitry.
  • SoC systems on a chip
  • ASIC application specific integrated circuits
  • the system circuitry 304 may be a part of the implementation of any desired functionality in the UE 300.
  • the system circuitry 304 may include logic that facilitates, as examples, decoding and playing music and video, e.g., MP3, MP4, MPEG, AVI, FLAC, AC3, or WAV decoding and playback; running applications; accepting user inputs; saving and retrieving application data; establishing, maintaining, and terminating cellular phone calls or data connections for, as one example, internet connectivity; establishing, maintaining, and terminating wireless network connections, Bluetooth connections, or other connections; and displaying relevant information on the user interface 310.
  • the user interface 310 and the inputs/output (I/O) interfaces 306 may include a graphical user interface, touch sensitive display, haptic feedback or other haptic output, voice or facial recognition inputs, buttons, switches, speakers and other user interface elements.
  • I/O interfaces 306 may include microphones, video and still image cameras, temperature sensors, vibration sensors, rotation and orientation sensors, headset and microphone input /output jacks, Universal Serial Bus (USB) connectors, memory card slots, radiation sensors (e.g., IR sensors) , and other types of inputs.
  • USB Universal Serial Bus
  • the communication interfaces 302 may include a Radio Frequency (RF) transmit (Tx) and receive (Rx) circuitry 316 which handles transmission and reception of signals through one or more antennas 314.
  • the communication interface 302 may include one or more transceivers.
  • the transceivers may be wireless transceivers that include modulation /demodulation circuitry, digital to analog converters (DACs) , shaping tables, analog to digital converters (ADCs) , filters, waveform shapers, filters, pre-amplifiers, power amplifiers and/or other logic for transmitting and receiving through one or more antennas, or (for some devices) through a physical (e.g., wireline) medium.
  • the transmitted and received signals may adhere to any of a diverse array of formats, protocols, modulations (e.g., QPSK, 16-QAM, 64-QAM, or 256-QAM) , frequency channels, bit rates, and encodings.
  • the communication interfaces 302 may include transceivers that support transmission and reception under the 2G, 3G, BT, WiFi, Universal Mobile Telecommunications System (UMTS) , High Speed Packet Access (HSPA) +, 4G /Long Term Evolution (LTE) , 5G standards, 6G standards, or any other telecommunication standards.
  • UMTS Universal Mobile Telecommunications System
  • HSPA High Speed Packet Access
  • LTE Long Term Evolution
  • the system circuitry 304 may include one or more processors 321 and memories 322.
  • the memory 322 stores, for example, an operating system 324, instructions 326, and parameters 328.
  • the processor 321 is configured to execute the instructions 326 to carry out desired functionality for the UE 300.
  • the parameters 328 may provide and specify configuration and operating options for the instructions 326.
  • the memory 322 may also store any BT, WiFi, 3G, 4G, 5G, 6G, or other data that the UE 300 will send, or has received, through the communication interfaces 302.
  • a system power for the UE 300 may be supplied by a power storage device, such as a battery or a transformer.
  • the present disclosure describes various embodiment for ensuring transport blocks (TBs) in order, which may be implemented, partly or totally, on the network base station and/or the user equipment described above in FIGS. 2 and 3.
  • TBs transport blocks
  • a medium access control (MAC) layer may be responsible for the scheduling, resource allocation and HARQ process management of TB transmission.
  • One MAC Protocol Data Unit (PDU) corresponds to one TB in the physical layer.
  • the MAC PDU is mapped into TB and carried on the physical channel layer to transmit.
  • the receiving end after the TB is successfully decoded, it may be delivered to the MAC layer and an upper layer subsequently.
  • DL downlink
  • UL uplink
  • UL HARQ processes per HARQ entity for example, UL HARQ entity
  • the HARQ process supports one TB when the physical layer is not configured for spatial multiplexing.
  • the HARQ process supports one or two TBs when the physical layer is configured for spatial multiplexing.
  • one HARQ process may correspond to 2 TB, and each codeword stream corresponds to one TB.
  • the TB transmission in different HARQ process may be independently.
  • the change in the radio environment causes the TB data retransmission, which leads to TB data out of order.
  • the disorder of TB transmission causes the disorder of data on the upper layer.
  • out-of-order data packets may seriously affect the user experience.
  • the present disclosure describes various embodiments to ensure the order of TBs, and can perform order-preserving processing on the TB data in a timely manner once TB data is out of order, so as to ensure that the underlying data is delivered upward in order at the beginning.
  • the present disclosure describes various embodiments to generate the sequence information associated with TBs (i.e., TB sequence information) when scheduling TB data, and the TB sequence information may be used to indicate the ordering of TBs at the receiving end and deliver them to the upper layer.
  • the TB transmitter For a transmitter with scheduling capabilities, the TB transmitter generates and transmit TB sequence information to the receiver to indicate the order of the received TBs.
  • the TB transmitter may receive the TB sequence information firstly, then transmits TB data according to the indicator of the TB sequence information received.
  • the present disclosure is not only applicable to traditional cellular scenarios (such as base station-UE scenarios) , but also applicable to device-to-device (D2D) scenarios, integrated access and backhaul (IAB) scenarios, internet of vehicles scenarios, and other scenarios alike.
  • D2D device-to-device
  • IAB integrated access and backhaul
  • the present disclosure describes various embodiment for ensuring transport blocks (TBs) in order, at least addressing some of the problems/issues described above, for example, how to generate and/or transmit sequence information associated with TBs, and/or transmitting/delivering the TBs in order the TBs according to the sequence information associated with TBs.
  • the sequence information associated with the TBs comprises at least one of the following: a TB sequence number (SN) , a TB ID, a TB number, a hybrid automatic repeat request (HARQ) process number, a hybrid automatic repeat request (HARQ) process identifier (ID) , a TB index within a HARQ process ID, a codeword index, a NDI, a TB group number, a TB SN within a TB group, a service ID, a TB SN within a service ID, a TB ID within a service ID, a TB number within a service ID, a carrier ID, a TB SN within a carrier ID, a TB ID within a carrier ID, a TB ID within a carrier ID, a TB ID for a HARQ entity, a TB number for a a TB number for a a HARQ entity, a TB number for a a TB number for a a TB number for
  • the method further includes generating, by the first network element, sequence information associated with TBs to indicate the second network element delivering the received TBs from the lower layer to the upper layer in order.
  • the method further includes receiving, by a first network element from a third network element, sequence information associated with TBs to indicate the second network element delivering the received TBs from the lower layer to the upper layer in order.
  • the method further includes ordering the TBs within a TB-ordering window according to the sequence information associated with the TBs, wherein the TB-ordering window comprises a pre-defined number of TBs, and/or transmitting, by the first network element, the TBs to the second network element in order.
  • the first network element determines whether to discard one or more TB within a TB-ordering window based on at least one of the following: a number of unsuccessful TB within the TB-ordering window being larger than a pre-defined threshold, an ordering timer timing out, and/or receiving a new data indicator (NDI) being toggled in the sequence information.
  • NDI new data indicator
  • the first network element transmits the sequence information of the TBs to the second network element via a downlink control information (DCI) , which comprises at least one of the following: the sequence information is in a single level DCI, the sequence information is in a first level DCI of a two-level DCI, the sequence information is in a second level DCI of the two-level DCI, the sequence information is distributed in a first level DCI and a second level DCI within the two-level DCI, the sequence information is a single level of a multiple-level DCI, and/or the sequence information is distributed in a plurality of levels of a multiple-level DCI.
  • DCI downlink control information
  • the first level DCI is a UE-level DCI and the second level DCI is a TB-level DCI
  • the first level DCI is a TB group-level DCI and the second level DCI is a TB-level DCI
  • the first level DCI is a static-level DCI and the second level DCI is a dynamic-level DCI
  • the first level DCI is a common-level DCI and the second level DCI is a specific-level DCI.
  • the first network element comprises one of the following: a radio access network (RAN) , a base station (BS) , a scheduling unit, a user equipment (UE) , an onboard unit (OBU) , a road side unit (RSU) , an integrated access and backhaul (IAB) node, or a distributed unit (DU) ; and/or the second network element comprises one of the following: a UE, an RAN, a BS, an IAB node, an OBU, or an RSU.
  • RAN radio access network
  • BS base station
  • a scheduling unit a user equipment
  • OBU onboard unit
  • RSU road side unit
  • IAB integrated access and backhaul
  • DU distributed unit
  • the second network element comprises one of the following: a UE, an RAN, a BS, an IAB node, an OBU, or an RSU.
  • the third network element comprises one of the following: a RAN, a BS, a scheduling unit, a UE, an OBU, a RSU, an IAB node, or a DU.
  • the present disclosure describes various embodiments of a method 480 for ensuring transport blocks (TBs) in order in wireless communication.
  • the method 480 may include a portion or all of the following steps: step 490, generating, by a third network element, sequence information associated with TBs to indicate a second network element delivering the TBs from a lower layer to an upper layer in order; and/or step 492, transmitting, by the third network element to a first network element, sequence information associated with TBs.
  • the first network element comprises one of the following: a radio access network (RAN) , a base station (BS) , a user equipment (UE) , an onboard unit (OBU) , a road side unit (RSU) , an integrated access and backhaul (IAB) node, or a distributed unit (DU) ;
  • the second network element comprises one of the following: a UE, an RAN, a BS, an IAB node, an OBU, or an RSU;
  • the third network element comprises one of the following: a RAN, a BS, a scheduling unit, a UE, an OBU, a RSU, an IAB node, or a DU.
  • the present disclosure describes various embodiment for ensuring transport blocks (TBs) in order, at least addressing some of the problems/issues described above, for example, how to generate and/or transmit sequence information associated with TBs, and/or transmitting/ordering the TBs according to the sequence information associated with TBs.
  • a base station performs downlink (DL) scheduling and transmits TB data to the terminal according to the DL scheduling information.
  • the base station generates DL sequence information associated with DL TBs during DL scheduling.
  • the terminal After receiving the DL sequence information associated with DL TBs, the terminal knows how to deliver the received TB in order to a upper layer.
  • a method 500 for the downlink may be performed according to a portion or all of the following steps.
  • Step 510 The base station sends the DL sequence information associated with DL TBs (such as the SN number of the TB) while sending the data packet corresponding to the TB to the UE.
  • the DL sequence information associated with DL TBs i.e., the DL TB sequence information
  • the DL sequence information associated with DL TBs may be sent together with the downlink scheduling information in DCI message. Alternatively, the DL sequence information associated with DL TBs may be sent independently in the dedicated control information message or DL data channel.
  • TB sequence information may be TB group sequence number, TB sequence number within the group, code word sequence number (such as code word index) , HARQ process number (such as HARQ ID) , service ID, TB index under the service ID, the traffic ID, bearer ID, under the same bearer ID TB index, one of the TB indexes under the same HARQ entity, or a combination thereof.
  • code word sequence number such as code word index
  • HARQ process number such as HARQ ID
  • service ID such as service ID
  • TB index under the service ID the traffic ID
  • bearer ID under the same bearer ID TB index
  • one of the TB indexes under the same HARQ entity or a combination thereof.
  • the base station When performing TB scheduling, the base station generates a dedicated TB number (such as TB SN) for the TB, and sends this dedicated TB number (TB SN) to the terminal. After receiving the TB SN, the terminal knows the order of the received TBs according to the TB SN. When HARQ retransmission occurs, this method allows the terminal to quickly select the top successful TB and deliver it quickly. At the same time, the base station may also quickly select the relatively early retransmitted TBs for special treatment based on the TB SN. For example, the special treatment is optimization of adjusting the Modulation and Coding Scheme (MCS) for the selected TB.
  • MCS Modulation and Coding Scheme
  • HARQ ID and new data indicator may be jointly indicate the TB sequence information (i.e., the sequence information associated with TB) .
  • NDI may be used to indicate whether the data is new data.
  • Each HARQ process saves an NDI value, which uses 1 bit to indicate whether the scheduled data is newly transmitted or retransmitted.
  • NDI toggled When the NDI value of the same HARQ process has changed compared with the previous one (NDI toggled) , it means that the current transmission is the initial transmission of a new TB; and otherwise (NDI not toggled) means that the current transmission is a retransmission of the same TB.
  • TB3 corresponds to single codeword stream transmission in HARQ ID2
  • the order relationship of TBs is clear so that the TBs may be delivered upwards in order.
  • the TB group sequence number + the TB sequence number within the TB group may be used to jointly indicate the TB sequence.
  • the TB group number indicates the order of different groups, and the TB number indicates the sequence of TBs of multiple TBs in the same TB group.
  • one HARQ process corresponds to multiple TB groups, and each TB group has multiple TBs.
  • there are 2 TB groups in a HARQ process and each TB group has 3 TBs.
  • These 6 TBs are arranged in order as TB1, TB2, . . . . TB6.
  • TB1-TB3 are in TB group1
  • TB4-TB6 are in TB group1.
  • the TB sequence of different HARQ processes should also be considered.
  • the TB sequence information may be one of the TB group sequence number, the TB sequence number within the group, the codeword sequence number (such as the codeword index) , the HARQ process number (such as the HARQ ID) , or a combination thereof.
  • the TB groups may be corresponding to the different traffic types or different data bearer. If there is no order requirement between TB groups, only TBs within the group need to be in order. For example, when different TB groups correspond to different traffic, the requirement of TB delivering to the upper layer in order is only in one TB group.
  • a HARQ ID and NDI are used in DCI to jointly indicate the order of TBs.
  • the first level of DCI is UE-level DCI
  • the second level is TB-level DCI.
  • the TB sequence information is included in the TB-level DCI.
  • the first level is static DCI
  • the second level is dynamic DCI
  • the TB sequence information is included in the dynamic DCI.
  • the first level is static DCI and the second level is dynamic DCI.
  • the TB sequence information is included in static DCI and dynamic DCI.
  • the TB sequence information is jointly obtained based on the static DCI sequence information and dynamic DCI sequence information.
  • the first level is common DCI and the second level is dedicated DCI.
  • the TB sequence information is included in the common DCI and dedicated DCI, and the TB sequence information is jointly indicated by the common DCI sequence information and the dedicated DCI sequence information.
  • the TB sequence information is included in a certain level of DCI, or is distributed in multiple levels of DCI levels, and the TB sequence information is jointly indicated by multiple DCI levels.
  • the way to send TB sequence information upstream may be through DCI or uplink control information (UCI) .
  • UCI uplink control information
  • the uplink TB sequence information can be sent through PUCCH or PUSCH.
  • the UE sends the TB data to the base station, and the UE sends the uplink TB sequence information in UCI to the base station to indicate the base station delivering the received TB in order for the lower layer to the upper layer.
  • the base station When the base station is responsible for scheduling, the base station generates and transmits the TB sequence information to the corresponding IAB node. When the IAB node has the scheduling capability, the IAB node generates and transmits the TB sequence information to the other end of the multi-hop IAB node or UE.

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Abstract

La présente divulgation concerne des procédés, un système et des dispositifs pour assurer l'ordre de blocs de transport (TB) dans une communication sans fil. Un procédé consiste à recevoir, depuis un premier élément de réseau par un second élément de réseau, des informations de séquence associées à des TB ; à recevoir, par le second élément de réseau, les TB provenant du premier élément de réseau ; et à distribuer, par le second élément de réseau, les TB reçus entre une couche inférieure et une couche supérieure dans l'ordre indiqué par les informations de séquence associées aux TB. Un autre procédé consiste à transmettre, par un premier élément de réseau à un second élément de réseau, des informations de séquence associées à des TB pour indiquer le second élément de réseau délivrant les TB reçus entre une couche inférieure et une couche supérieure dans l'ordre ; et à transmettre, par le premier élément de réseau, les TB au second élément de réseau.
PCT/CN2023/120874 2023-09-22 2023-09-22 Procédés, dispositifs et systèmes pour assurer l'ordre de blocs de transport Pending WO2024216844A1 (fr)

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CN101034959A (zh) * 2006-03-10 2007-09-12 华为技术有限公司 混合自动重传方法及其装置和系统
US20100279721A1 (en) * 2008-01-07 2010-11-04 Yu Chen Methods for transmitting and receiving multimedia service data, base station and user equipment
US20170181185A1 (en) * 2014-03-02 2017-06-22 Lg Electronics Inc. Method for reordering a packet data convergence protocol packet data unit at a user equipment in a dual connectivity systme and device therefor
US20200314886A1 (en) * 2019-03-28 2020-10-01 Tcl Communication Limited Scheduling multiple transfer blocks

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101034959A (zh) * 2006-03-10 2007-09-12 华为技术有限公司 混合自动重传方法及其装置和系统
US20100279721A1 (en) * 2008-01-07 2010-11-04 Yu Chen Methods for transmitting and receiving multimedia service data, base station and user equipment
US20170181185A1 (en) * 2014-03-02 2017-06-22 Lg Electronics Inc. Method for reordering a packet data convergence protocol packet data unit at a user equipment in a dual connectivity systme and device therefor
US20200314886A1 (en) * 2019-03-28 2020-10-01 Tcl Communication Limited Scheduling multiple transfer blocks

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