WO2020007086A1 - Procédé et dispositif terminal de transmission de harq - Google Patents

Procédé et dispositif terminal de transmission de harq Download PDF

Info

Publication number
WO2020007086A1
WO2020007086A1 PCT/CN2019/082060 CN2019082060W WO2020007086A1 WO 2020007086 A1 WO2020007086 A1 WO 2020007086A1 CN 2019082060 W CN2019082060 W CN 2019082060W WO 2020007086 A1 WO2020007086 A1 WO 2020007086A1
Authority
WO
WIPO (PCT)
Prior art keywords
harq
terminal device
timer
refraining
harq process
Prior art date
Application number
PCT/CN2019/082060
Other languages
English (en)
Inventor
Jinhua Liu
Torsten DUDDA
Original Assignee
Telefonaktiebolaget Lm Ericsson (Publ)
Jinhua Liu
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 Telefonaktiebolaget Lm Ericsson (Publ), Jinhua Liu filed Critical Telefonaktiebolaget Lm Ericsson (Publ)
Publication of WO2020007086A1 publication Critical patent/WO2020007086A1/fr

Links

Images

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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1854—Scheduling and prioritising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment

Definitions

  • the present disclosure relates to wireless communication, and more particularly, to a method and a terminal device for Hybrid Automatic Repeat reQuest (HARQ) transmission.
  • HARQ Hybrid Automatic Repeat reQuest
  • a random access procedure is defined to set up (or recover) a radio connection for a terminal device (e.g., User Equipment, or UE) .
  • a terminal device e.g., User Equipment, or UE
  • CBRA Contention Based Random Access
  • a UE transmits Physical Random Access Channel (PRACH) , i.e. Message 1 (Msg1) , to a network device (e.g., gNB) to initiate a radio connection setup procedure.
  • PRACH Physical Random Access Channel
  • Msg1 Message 1
  • Step 2 upon reception of the PRACH, the gNB knows that a particular UE has initiated a random access request and sends a Random Access Response (RAR) message, i.e.
  • RAR Random Access Response
  • Msg2 Message 2
  • Msg3 uplink grant for Message 3
  • the gNB does not know which UE has initiated the random access request or the capability of the UE, the gNB assumes that the UE is of poor capability (e.g. a minimum operation bandwidth, a large processing delay, slot based scheduling and/or a small number of HARQ processes) . Accordingly, an HARQ process having the smallest HARQ Identifier (ID) , i.e., HARQ process 0, is used for Msg3 transmission. In Step 3, the UE transmits the Msg3 according to the UL grant.
  • ID HARQ Identifier
  • This message can include, among others, the UE’s ID and a cause to set up the radio connection.
  • the gNB transmits a contention resolution message, i.e., Message 4 (Msg4) , to the UE to confirm that the random access procedure has succeeded.
  • Msg4 Message 4
  • the CBRA can be used in various cases as follows:
  • CS Configured Scheduling
  • RRC Radio Resource Control
  • a set of parameters such as a periodicity, a number of HARQ processes, a CS-RNTI and power control parameters are signaled by the gNB via RRC signaling.
  • the serving gNB can conditionally determine when to activate/reactivate the configured grant Type 2 and transmit physical layer parameters, such as time-frequency resources and an MCS, via an uplink grant addressed to the CS-RNTI.
  • transmission opportunities i.e. configured uplink grants
  • the UE can determine the configured grant occurrence according to the respective formulas in Section 5.8 of 3GPP TS 38.321-f10, which is incorporated here by reference in its entirety.
  • the UE determines to transmit data using a configured grant, it should also determine a HARQ process ID associated with the configured grant according to Section 5.4.1 of 3GPP TS 38.321-f10, which is reproduced below for reference:
  • the UE should also determine the HARQ process ID associated with the configured grant according to the defined formula in Section 5.4.1 in 3GPP TS 38.321-f10. The corresponding part is copied below for quick reference:
  • the HARQ Process ID associated with the first symbol of a UL transmission is derived from the following equation:
  • HARQ Process ID [floor (CURRENT_symbol/periodicity) ] modulo nrofHARQ-Processes
  • CURRENT_symbol (SFN ⁇ numberOfSlotsPerFrame ⁇ numberOfSymbolsPerSlot + slot number in the frame ⁇ numberOfSymbolsPerSlot + symbol number in the slot)
  • numberOfSlotsPerFrame and numberOfSymbolsPerSlot refer to the number of consecutive slots per frame and the number of consecutive symbols per slot, respectively as specified in TS 38.211.
  • CURRENT_symbol refers to the symbol index of the first transmission occasion of a repetition bundle that takes place.
  • a HARQ process is configured for a configured grant if the configured grant is activated and the associated HARQ process ID is less than nrofHARQ-Processes.
  • an associated configuredGrantTimer When a HARQ process is used for a HARQ transmission, an associated configuredGrantTimer is started with a preconfigured value. When the associated configuredGrantTimer is running, the UE should not use the same HARQ process for another transmission using any configured grant. The expiration of the associated configuredGrantTimer means: 1) the corresponding HARQ process is released; and 2) the corresponding HARQ transmission has succeeded. That is, the UE can use the same HARQ process for uplink transmission using a configured grant when the associated configuredGrantTimer expires.
  • a UE may be configured with a configured grant when it performs random access for BFR. That is, when a beam failure occurs, a UE may have been configured with a configured grant and the UE may trigger a HARQ transmission using the configured grant during the BFR procedure. Recall that the Msg3 transmission uses HARQ process 0.
  • the configured grant is also associated with HARQ process 0 and the HARQ transmission is triggered between a transmission (either initial transmission or retransmission) of the Msg3 and a subsequent retransmission of the Msg3, the subsequent retransmission of the Msg3 would fail as HARQ process 0 is occupied by the HARQ transmission using the configured grant (which will refresh the HARQ buffer for the subsequent retransmission of the Msg3) .
  • the configured grant which will refresh the HARQ buffer for the subsequent retransmission of the Msg3) .
  • a method in a terminal device for Hybrid Automatic Repeat reQuest (HARQ) transmission includes: detecting a beam failure; initiating a Beam Failure Recovery, BFR, procedure by means of random access; and refraining from HARQ transmission based on one or more configured grants associated with a HARQ process to be used for Message 3 (Msg3) during the BFR procedure.
  • Msg3 Message 3
  • the operation of refraining can include: skipping all transmission opportunities associated with the one or more configured grants during the BFR procedure.
  • the operation of refraining can include: setting a timer associated with the HARQ process to a first value during the BFR procedure, such that the timer does not expire between two successive transmissions of the Msg3 and any HARQ transmission based on any configured grant associated with the HARQ process is prohibited when the timer is running.
  • the operation of refraining can include: refraining from HARQ transmission based on all configured grants during the BFR procedure.
  • the operation of refraining can include: skipping all transmission opportunities associated with all configured grants during the BFR procedure.
  • the operation of refraining can include: setting a timer associated with each of all HARQ processes for configured grants to a first value during the BFR procedure, such that the timer does not expire between two successive transmissions of the Msg3 and any HARQ transmission based on any configured grant is prohibited when the timer is running.
  • the timer can be started upon transmitting the Msg3 or upon initiating the BFR procedure.
  • the timer can be stopped upon receiving a Message 4 (Msg4) .
  • the first value can be broadcasted via a system message or transmitted via dedicated Radio Resource Control (RRC) signaling.
  • RRC Radio Resource Control
  • the first value can be configured per Medium Access Control (MAC) entity or per frequency range.
  • MAC Medium Access Control
  • the HARQ process can be HARQ process 0.
  • the operation of refraining can be performed only when a configured grant timer associated with the HARQ process has a value smaller than a predetermined threshold.
  • a terminal device includes a transceiver, a processor and a memory.
  • the memory contains instructions executable by the processor whereby the terminal device is operative to perform the method according to the above first aspect.
  • a computer readable storage medium has computer program instructions stored thereon.
  • the computer program instructions when executed by a processor in a terminal device, causing the terminal device to perform the method according to the above first aspect.
  • a terminal device refrains from HARQ transmission based on any configured grant associated with a HARQ process to be used for Msg3. In this way, a collision, which may otherwise occur between the Msg3 transmission and a HARQ transmission based on a configured grant associated with the HARQ process, can be avoided and the HARQ process for the Msg3 transmission can be protected.
  • Fig. 1 is a flowchart illustrating a method in a terminal device for HARQ transmission according to an embodiment of the present disclosure
  • Fig. 2 is a block diagram of a terminal device according to an embodiment of the present disclosure
  • Fig. 3 is a block diagram of a terminal device according to another embodiment of the present disclosure.
  • Fig. 4 schematically illustrates a telecommunication network connected via an intermediate network to a host computer
  • Fig. 5 is a generalized block diagram of a host computer communicating via a base station with a user equipment over a partially wireless connection;
  • Figs. 6 to 9 are flowcharts illustrating methods implemented in a communication system including a host computer, a base station and a user equipment.
  • wireless communication network refers to a network following any suitable communication standards, such as LTE-Advanced (LTE-A) , LTE, Wideband Code Division Multiple Access (WCDMA) , High-Speed Packet Access (HSPA) , and so on.
  • LTE-A LTE-Advanced
  • WCDMA Wideband Code Division Multiple Access
  • HSPA High-Speed Packet Access
  • the communications between a terminal device and a network device in the wireless communication network may be performed according to any suitable generation communication protocols, including, but not limited to, Global System for Mobile Communications (GSM) , Universal Mobile Telecommunications System (UMTS) , Long Term Evolution (LTE) , and/or other suitable 1G (the first generation) , 2G (the second generation) , 2.5G, 2.75G, 3G (the third generation) , 4G (the fourth generation) , 4.5G, 5G (the fifth generation) communication protocols, wireless local area network (WLAN) standards, such as the IEEE 802.11 standards; and/or any other appropriate wireless communication standard, such as the Worldwide Interoperability for Microwave Access (WiMax) , Bluetooth, and/or ZigBee standards, and/or any other protocols either currently known or to be developed in the future.
  • GSM Global System for Mobile Communications
  • UMTS Universal Mobile Telecommunications System
  • LTE Long Term Evolution
  • 1G the first generation
  • 2G the second generation
  • the term "network device” refers to a device in a wireless communication network via which a terminal device accesses the network and receives services therefrom.
  • the network device refers to a base station (BS) , an access point (AP) , or any other suitable device in the wireless communication network.
  • the BS may be, for example, a node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , or gNB, a Remote Radio Unit (RRU) , a radio header (RH) , a remote radio head (RRH) , a relay, a low power node such as a femto, a pico, and so forth.
  • NodeB or NB node B
  • eNodeB or eNB evolved NodeB
  • gNB gNodeB
  • RRU Remote Radio Unit
  • RH radio header
  • RRH remote radio head
  • relay a low power node such as a f
  • the network device may include multi-standard radio (MSR) radio equipment such as MSR BSs, network controllers such as radio network controllers (RNCs) or base station controllers (BSCs) , base transceiver stations (BTSs) , transmission points, transmission nodes.
  • MSR multi-standard radio
  • RNCs radio network controllers
  • BSCs base station controllers
  • BTSs base transceiver stations
  • the network device may represent any suitable device (or group of devices) capable, configured, arranged, and/or operable to enable and/or provide a terminal device access to the wireless communication network or to provide some service to a terminal device that has accessed the wireless communication network.
  • terminal device refers to any end device that can access a wireless communication network and receive services therefrom.
  • the terminal device refers to a mobile terminal, user equipment (UE) , or other suitable devices.
  • the UE may be, for example, a Subscriber Station (SS) , a Portable Subscriber Station, a Mobile Station (MS) , or an Access Terminal (AT) .
  • SS Subscriber Station
  • MS Mobile Station
  • AT Access Terminal
  • the terminal device may include, but not limited to, portable computers, desktop computers, image capture terminal devices such as digital cameras, gaming terminal devices, music storage and playback appliances, a mobile phone, a cellular phone, a smart phone, voice over IP (VoIP) phones, wireless local loop phones, a tablet, a wearable device, a personal digital assistant (PDA) , wearable terminal devices, vehicle-mounted wireless terminal devices, wireless endpoints, mobile stations, laptop-embedded equipment (LEE) , laptop-mounted equipment (LME) , USB dongles, smart devices, wireless customer-premises equipment (CPE) and the like.
  • the terms “terminal device” , “terminal” , “user equipment” and “UE” may be used interchangeably.
  • a terminal device may represent a UE configured for communication in accordance with one or more communication standards promulgated by the 3rd Generation Partnership Project (3GPP) , such as 3GPP's GSM, UMTS, LTE, and/or 5G standards.
  • 3GPP 3rd Generation Partnership Project
  • a "user equipment” or “UE” may not necessarily have a "user” in the sense of a human user who owns and/or operates the relevant device.
  • a terminal device may be configured to transmit and/or receive information without direct human interaction.
  • a terminal device may be designed to transmit information to a network on a predetermined schedule, when triggered by an internal or external event, or in response to requests from the wireless communication network.
  • a UE may represent a device that is intended for sale to, or operation by, a human user but that may not initially be associated with a specific human user.
  • the terminal device may support device-to-device (D2D) communication, for example by implementing a 3GPP standard for sidelink communication, and may in this case be referred to as a D2D communication device.
  • D2D device-to-device
  • a terminal device may represent a machine or other device that performs monitoring and/or measurements, and transmits the results of such monitoring and/or measurements to another terminal device and/or network equipment.
  • the terminal device may in this case be a machine-to-machine (M2M) device, which may in a 3GPP context be referred to as a machine-type communication (MTC) device.
  • M2M machine-to-machine
  • MTC machine-type communication
  • the terminal device may be a UE implementing the 3GPP narrow band internet of things (NB-IoT) standard.
  • NB-IoT narrow band internet of things
  • NB-IoT narrow band internet of things
  • a terminal device may represent a vehicle or other equipment that is capable of monitoring and/or reporting on its operational status or other functions associated with its operation.
  • a downlink, DL transmission refers to a transmission from the network device to a terminal device
  • an uplink, UL transmission refers to a transmission in an opposite direction.
  • references in the specification to "one embodiment, “an embodiment, “”an example embodiment, “ and the like indicate that the embodiment described may include a particular feature, structure, or characteristic, but it is not necessary that every embodiment includes the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
  • first and second etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and similarly, a second element could be termed a first element, without departing from the scope of example embodiments.
  • the term “and/or” includes any and all combinations of one or more of the associated listed terms. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be liming of example embodiments. As used herein, the singular forms “a” , “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise.
  • the above collision can be avoided by protecting the Msg3 transmission using the configuredGrantTimer, i.e., by starting/restarting the configuredGrantTimer associated with HARQ process 0 upon transmitting the Msg3.
  • the configuredGrantTimer may not be sufficient to protect the Msg3 transmission due to the following two factors.
  • a poor UE capability is assumed, e.g., a slot based scheduling with a default numerology (e.g., a numerology with a large slot length) and a large processing delay at the UE will be assumed, which means that the time interval between the initial transmission (or retransmission) and the subsequent retransmission of the Msg3 may be as long as several slots.
  • some small configuredGrantTimer values can only lock HARQ process 0 for a short time, e.g., 2 or 7 symbols or 1, 2 or 4 slots with regular cyclic prefix, or 6 symbols or 1, 2 or 4 slots with extended cyclic prefix.
  • the configuredGrantTimer cannot guarantee that HARQ process 0 will be locked long enough so as to be used by the retransmission of the Msg3.
  • Fig. 1 is a flowchart illustrating a method 100 for HARQ transmission according to an embodiment of the present disclosure.
  • the method 100 can be performed at a terminal device.
  • the method 100 can apply to both CS Type 1 and CS Type 2.
  • the terminal device detects a beam failure.
  • the terminal device may be configured with one or more configured grants at this time.
  • the terminal device initiates a BFR procedure by means of random access.
  • the BFR procedure may also be referred to as "random access procedure for BFR" or simply “random access procedure” .
  • the BFR procedure can include the four steps, i.e., Msg1 ⁇ Msg4, as described above.
  • the terminal device refrains from HARQ transmission based on one or more configured grants associated with a HARQ process to be used for Msg3 during the BFR procedure, i.e., from the time when an Msg1 is transmitted or the beam failure is detected to the time when an Msg4 is received.
  • the HARQ process can be assumed to be HARQ process 0, as described above. In this case, the terminal device can still use other HARQ processes, if any, for transmission based on configured grants.
  • the terminal device can skip all transmission opportunities associated with the one or more configured grants (e.g., associated with HARQ process 0) during the BFR procedure. In other words, the terminal device does not trigger any HARQ transmission based on any configured grant associated with HARQ process 0 during the BFR procedure, even if the configuredGrantTimer associated with HARQ process 0 is not running.
  • the terminal device does not trigger any HARQ transmission based on any configured grant associated with HARQ process 0 during the BFR procedure, even if the configuredGrantTimer associated with HARQ process 0 is not running.
  • the terminal device can set a timer associated with HARQ process 0 to a first value during the BFR procedure, such that the timer does not expire between two successive transmissions of the Msg3 and any HARQ transmission based on any configured grant associated with HARQ process 0 is prohibited when the timer is running.
  • the timer here can an additional configuredGrantTimer that is preconfigured to the terminal device to be used only during the BFR procedure.
  • the timer can be started (or restarted) at the time when the terminal device transmits the Msg3.
  • the first value can be large enough, e.g., more than 5 slots, to make sure that the timer is still running when the subsequent retransmission of the Msg3 is scheduled to occur.
  • the timer can be started (or restarted) at the time when the terminal device initiates the BFR procedure in the block 120, e.g., when the terminal device transmits an Msg1.
  • the risk that the transmission of the Msg3, which is based on a dynamic grant, will override an uplink HARQ transmission based on a configured grant associated with HARQ process 0 can be reduced.
  • the first value can be large enough to make sure that the timer would not expire before retransmission of the Msg3.
  • the timer can be stopped when the terminal device determines that the Msg3 has been successfully received by a network device, e.g., when the terminal device receives an Msg4 from the network device. Once the timer is stopped, HARQ process 0 will be released and can thus be used for HARQ transmissions based on configured grants.
  • the first value can be broadcasted via a system message or transmitted via dedicated Radio Resource Control (RRC) signaling (e.g., in the Information Element (IE) for configuring CS) from a network device.
  • RRC Radio Resource Control
  • the first value can be configured per Medium Access Control (MAC) entity, e.g., for aggregated carriers, by the network device.
  • MAC Medium Access Control
  • the first value can be configured per frequency range by the network device, as different frequency ranges may have different delay requirements.
  • the present disclosure also provides a network device and a method therein.
  • the network device can, e.g., by performing the method, broadcast the first value to the terminal device via a system message or transmit the first value to the terminal device via dedicated RRC signaling.
  • the terminal device can simply refrain from HARQ transmission based on all configured grants during the BFR procedure. To do so, the terminal device can skip all transmission opportunities associated with all configured grants during the BFR procedure.
  • the terminal device can use the above timer, i.e., the additional configuredGrantTimer, but in this case the timer associated with each of all HARQ processes for configured grants can be set to a first value during the BFR procedure, such that the timer does not expire between two successive transmissions of the Msg3 and any HARQ transmission based on any configured grant is prohibited when the timer is running.
  • the operation of refraining in the block 130 can be performed only when the configuredGrantTimer associated with HARQ process 0 has a value smaller than a predetermined threshold (e.g., 5 slots) .
  • a predetermined threshold e.g. 5 slots
  • the operation in the block 130 may not be necessary.
  • a collision which may otherwise occur between the Msg3 transmission and a HARQ transmission based on a configured grant associated with HARQ process 0, can be avoided.
  • a soft combining gain can be guaranteed for the Msg3 transmission, so that the chance of a successful BFR can be increased.
  • the uplink performance will not degrade for not using those configured grants, as a very low uplink performance is expected during the BFR procedure.
  • Radio Link Control (RLC) layer e.g., Radio Link Control
  • Fig. 2 is a block diagram of a terminal device 200 according to an embodiment of the present disclosure.
  • the terminal device 200 includes a detecting unit 210 configured to detect a beam failure.
  • the terminal device 200 further includes a BFR unit 220 configured to initiate a BFR procedure by means of random access.
  • the terminal device 200 further includes a HARQ processing unit 230 configured to refrain from HARQ transmission based on one or more configured grants associated with a HARQ process to be used for Msg3 during the BFR procedure.
  • the HARQ processing unit 230 can be configured to skip all transmission opportunities associated with the one or more configured grants during the BFR procedure.
  • the HARQ processing unit 230 can be configured to set a timer associated with the HARQ process to a first value during the BFR procedure, such that the timer does not expire between two successive transmissions of the Msg3 and any HARQ transmission based on any configured grant associated with the HARQ process is prohibited when the timer is running.
  • the HARQ processing unit 230 can be configured to refrain from HARQ transmission based on all configured grants during the BFR procedure.
  • the HARQ processing unit 230 can be configured to skip all transmission opportunities associated with all configured grants during the BFR procedure.
  • the HARQ processing unit 230 can be configured to set a timer associated with each of all HARQ processes for configured grants to a first value during the BFR procedure, such that the timer does not expire between two successive transmissions of the Msg3 and any HARQ transmission based on any configured grant is prohibited when the timer is running.
  • the timer can be started upon transmitting the Msg3 or upon initiating the BFR procedure.
  • the timer can be stopped upon receiving an Msg4.
  • the first value can be broadcasted via a system message or transmitted via dedicated RRC signaling.
  • the first value can be configured per MAC entity or per frequency range.
  • the HARQ process can be HARQ process 0.
  • the HARQ processing unit 230 can be configured to perform the operation of refraining only when a configured grant timer associated with the HARQ process has a value smaller than a predetermined threshold.
  • the detecting unit 210, the BFR unit 220 and the HARQ processing unit 230 can be implemented as a pure hardware solution or as a combination of software and hardware, e.g., by one or more of: a processor or a micro-processor and adequate software and memory for storing of the software, a Programmable Logic Device (PLD) or other electronic component (s) or processing circuitry configured to perform the actions described above, and illustrated, e.g., in Fig. 1.
  • PLD Programmable Logic Device
  • Fig. 3 is a block diagram of a terminal device 300 according to another embodiment of the present disclosure.
  • the terminal device 300 includes a transceiver 310, a processor 320 and a memory 330.
  • the memory 330 contains instructions executable by the processor 320 whereby the terminal device 300 is operative to perform the actions, e.g., of the procedure described earlier in conjunction with Fig. 1.
  • the memory 330 contains instructions executable by the processor 320 whereby the terminal device 300 is operative to: detect a beam failure; initiate a BFR procedure by means of random access; and refrain from HARQ transmission based on one or more configured grants associated with a HARQ process to be used for Msg3 during the BFR procedure.
  • the operation of refraining can include: skipping all transmission opportunities associated with the one or more configured grants during the BFR procedure.
  • the operation of refraining can include: setting a timer associated with the HARQ process to a first value during the BFR procedure, such that the timer does not expire between two successive transmissions of the Msg3 and any HARQ transmission based on any configured grant associated with the HARQ process is prohibited when the timer is running.
  • the operation of refraining can include: refraining from HARQ transmission based on all configured grants during the BFR procedure.
  • the operation of refraining can include: skipping all transmission opportunities associated with all configured grants during the BFR procedure.
  • the operation of refraining can include: setting a timer associated with each of all HARQ processes for configured grants to a first value during the BFR procedure, such that the timer does not expire between two successive transmissions of the Msg3 and any HARQ transmission based on any configured grant is prohibited when the timer is running.
  • the timer can be started upon transmitting the Msg3 or upon initiating the BFR procedure.
  • the timer can be stopped upon receiving a Message 4 (Msg4) .
  • the first value can be broadcasted via a system message or transmitted via dedicated Radio Resource Control (RRC) signaling.
  • RRC Radio Resource Control
  • the first value can be configured per Medium Access Control (MAC) entity or per frequency range.
  • MAC Medium Access Control
  • the HARQ process can be HARQ process 0.
  • the operation of refraining can be performed only when a configured grant timer associated with the HARQ process has a value smaller than a predetermined threshold.
  • the present disclosure also provides at least one computer program product in the form of a non-volatile or volatile memory, e.g., a non-transitory computer readable storage medium, an Electrically Erasable Programmable Read-Only Memory (EEPROM) , a flash memory and a hard drive.
  • the computer program product includes a computer program.
  • the computer program includes: code/computer readable instructions, which when executed by the processor 320 causes the terminal device 300 to perform the actions, e.g., of the procedure described earlier in conjunction with Fig. 1.
  • the computer program product may be configured as a computer program code structured in computer program modules.
  • the computer program modules could essentially perform the actions of the flow illustrated in Fig. 1.
  • the processor may be a single CPU (Central processing unit) , but could also comprise two or more processing units.
  • the processor may include general purpose microprocessors; instruction set processors and/or related chips sets and/or special purpose microprocessors such as Application Specific Integrated Circuit (ASICs) .
  • the processor may also comprise board memory for caching purposes.
  • the computer program may be carried by a computer program product connected to the processor.
  • the computer program product may comprise a non-transitory computer readable storage medium on which the computer program is stored.
  • the computer program product may be a flash memory, a Random-access memory (RAM) , a Read-Only Memory (ROM) , or an EEPROM, and the computer program modules described above could in alternative embodiments be distributed on different computer program products in the form of memories.
  • RAM Random-access memory
  • ROM Read-Only Memory
  • EEPROM Electrically Erasable programmable read-only memory
  • a communication system includes a telecommunication network 410, such as a 3GPP-type cellular network, which comprises an access network 411, such as a radio access network, and a core network 414.
  • the access network 411 comprises a plurality of base stations 412a, 412b, 412c, such as NBs, eNBs, gNBs or other types of wireless access points, each defining a corresponding coverage area 413a, 413b, 413c.
  • Each base station 412a, 412b, 412c is connectable to the core network 414 over a wired or wireless connection 415.
  • a first user equipment (UE) 491 located in coverage area 413c is configured to wirelessly connect to, or be paged by, the corresponding base station 412c.
  • a second UE 492 in coverage area 413a is wirelessly connectable to the corresponding base station 412a. While a plurality of UEs 491, 492 are illustrated in this example, the disclosed embodiments are equally applicable to a situation where a sole UE is in the coverage area or where a sole UE is connecting to the corresponding base station 412.
  • the telecommunication network 410 is itself connected to a host computer 430, which may be embodied in the hardware and/or software of a standalone server, a cloud-implemented server, a distributed server or as processing resources in a server farm.
  • the host computer 430 may be under the ownership or control of a service provider, or may be operated by the service provider or on behalf of the service provider.
  • the connections 421, 422 between the telecommunication network 410 and the host computer 430 may extend directly from the core network 414 to the host computer 430 or may go via an optional intermediate network 420.
  • the intermediate network 420 may be one of, or a combination of more than one of, a public, private or hosted network; the intermediate network 420, if any, may be a backbone network or the Internet; in particular, the intermediate network 420 may comprise two or more sub-networks (not shown) .
  • the communication system of Fig. 4 as a whole enables connectivity between one of the connected UEs 491, 492 and the host computer 430.
  • the connectivity may be described as an over-the-top (OTT) connection 450.
  • the host computer 430 and the connected UEs 491, 492 are configured to communicate data and/or signaling via the OTT connection 450, using the access network 411, the core network 414, any intermediate network 420 and possible further infrastructure (not shown) as intermediaries.
  • the OTT connection 450 may be transparent in the sense that the participating communication devices through which the OTT connection 450 passes are unaware of routing of uplink and downlink communications.
  • a base station 412 may not or need not be informed about the past routing of an incoming downlink communication with data originating from a host computer 430 to be forwarded (e.g., handed over) to a connected UE 491. Similarly, the base station 412 need not be aware of the future routing of an outgoing uplink communication originating from the UE 491 towards the host computer 430.
  • a host computer 510 comprises hardware 515 including a communication interface 516 configured to set up and maintain a wired or wireless connection with an interface of a different communication device of the communication system 500.
  • the host computer 510 further comprises processing circuitry 518, which may have storage and/or processing capabilities.
  • the processing circuitry 518 may comprise one or more programmable processors, application-specific integrated circuits, field programmable gate arrays or combinations of these (not shown) adapted to execute instructions.
  • the host computer 510 further comprises software 511, which is stored in or accessible by the host computer 510 and executable by the processing circuitry 518.
  • the software 511 includes a host application 512.
  • the host application 512 may be operable to provide a service to a remote user, such as a UE 530 connecting via an OTT connection 550 terminating at the UE 530 and the host computer 510. In providing the service to the remote user, the host application 512 may provide user data which is transmitted using the OTT connection 550.
  • the communication system 500 further includes a base station 520 provided in a telecommunication system and comprising hardware 525 enabling it to communicate with the host computer 510 and with the UE 530.
  • the hardware 525 may include a communication interface 526 for setting up and maintaining a wired or wireless connection with an interface of a different communication device of the communication system 500, as well as a radio interface 527 for setting up and maintaining at least a wireless connection 570 with a UE 530 located in a coverage area (not shown in Fig. 5) served by the base station 520.
  • the communication interface 526 may be configured to facilitate a connection 560 to the host computer 510.
  • the connection 560 may be direct or it may pass through a core network (not shown in Fig.
  • the hardware 525 of the base station 520 further includes processing circuitry 528, which may comprise one or more programmable processors, application-specific integrated circuits, field programmable gate arrays or combinations of these (not shown) adapted to execute instructions.
  • the base station 520 further has software 521 stored internally or accessible via an external connection.
  • the communication system 500 further includes the UE 530 already referred to.
  • Its hardware 535 may include a radio interface 537 configured to set up and maintain a wireless connection 570 with a base station serving a coverage area in which the UE 530 is currently located.
  • the hardware 535 of the UE 530 further includes processing circuitry 538, which may comprise one or more programmable processors, application-specific integrated circuits, field programmable gate arrays or combinations of these (not shown) adapted to execute instructions.
  • the UE 530 further comprises software 531, which is stored in or accessible by the UE 530 and executable by the processing circuitry 538.
  • the software 531 includes a client application 532.
  • the client application 532 may be operable to provide a service to a human or non-human user via the UE 530, with the support of the host computer 510.
  • an executing host application 512 may communicate with the executing client application 532 via the OTT connection 550 terminating at the UE 530 and the host computer 510.
  • the client application 532 may receive request data from the host application 512 and provide user data in response to the request data.
  • the OTT connection 550 may transfer both the request data and the user data.
  • the client application 532 may interact with the user to generate the user data that it provides.
  • the host computer 510, base station 520 and UE 530 illustrated in Fig. 5 may be identical to the host computer 430, one of the base stations 412a, 412b, 412c and one of the UEs 491, 492 of Fig. 4, respectively.
  • the inner workings of these entities may be as shown in Fig. 5 and independently, the surrounding network topology may be that of Fig. 4.
  • the OTT connection 550 has been drawn abstractly to illustrate the communication between the host computer 510 and the use equipment 530 via the base station 520, without explicit reference to any intermediary devices and the precise routing of messages via these devices.
  • Network infrastructure may determine the routing, which it may be configured to hide from the UE 530 or from the service provider operating the host computer 510, or both. While the OTT connection 550 is active, the network infrastructure may further take decisions by which it dynamically changes the routing (e.g., on the basis of load balancing consideration or reconfiguration of the network) .
  • the wireless connection 570 between the UE 530 and the base station 520 is in accordance with the teachings of the embodiments described throughout this disclosure.
  • One or more of the various embodiments improve the performance of OTT services provided to the UE 530 using the OTT connection 550, in which the wireless connection 570 forms the last segment. More precisely, the teachings of these embodiments may improve the success rate of the BFR procedure and thereby provide benefits such as reduced user waiting time at the UE.
  • a measurement procedure may be provided for the purpose of monitoring data rate, latency and other factors on which the one or more embodiments improve.
  • the measurement procedure and/or the network functionality for reconfiguring the OTT connection 550 may be implemented in the software 511 of the host computer 510 or in the software 531 of the UE 530, or both.
  • sensors (not shown) may be deployed in or in association with communication devices through which the OTT connection 550 passes; the sensors may participate in the measurement procedure by supplying values of the monitored quantities exemplified above, or supplying values of other physical quantities from which software 511, 531 may compute or estimate the monitored quantities.
  • the reconfiguring of the OTT connection 550 may include message format, retransmission settings, preferred routing etc. ; the reconfiguring need not affect the base station 520, and it may be unknown or imperceptible to the base station 520. Such procedures and functionalities may be known and practiced in the art.
  • measurements may involve proprietary UE signaling facilitating the host computer’s 510 measurements of throughput, propagation times, latency and the like.
  • the measurements may be implemented in that the software 511, 531 causes messages to be transmitted, in particular empty or ‘dummy’ messages, using the OTT connection 550 while it monitors propagation times, errors etc.
  • Fig. 6 is a flowchart illustrating a method implemented in a communication system, in accordance with one embodiment.
  • the communication system includes a host computer, a base station and a UE which may be those described with reference to Figs. 4 and 5. For simplicity of the present disclosure, only drawing references to Fig. 6 will be included in this section.
  • the host computer provides user data.
  • the host computer provides the user data by executing a host application.
  • the host computer initiates a transmission carrying the user data to the UE.
  • the base station transmits to the UE the user data which was carried in the transmission that the host computer initiated, in accordance with the teachings of the embodiments described throughout this disclosure.
  • the UE executes a client application associated with the host application executed by the host computer.
  • Fig. 7 is a flowchart illustrating a method implemented in a communication system, in accordance with one embodiment.
  • the communication system includes a host computer, a base station and a UE which may be those described with reference to Fig. 4 and 5. For simplicity of the present disclosure, only drawing references to Fig. 7 will be included in this section.
  • the host computer provides user data.
  • the host computer provides the user data by executing a host application.
  • the host computer initiates a transmission carrying the user data to the UE. The transmission may pass via the base station, in accordance with the teachings of the embodiments described throughout this disclosure.
  • the UE receives the user data carried in the transmission.
  • Fig. 8 is a flowchart illustrating a method implemented in a communication system, in accordance with one embodiment.
  • the communication system includes a host computer, a base station and a UE which may be those described with reference to Figs. 4 and 5. For simplicity of the present disclosure, only drawing references to Fig. 8 will be included in this section.
  • the UE receives input data provided by the host computer.
  • the UE provides user data.
  • the UE provides the user data by executing a client application.
  • the UE executes a client application which provides the user data in reaction to the received input data provided by the host computer.
  • the executed client application may further consider user input received from the user.
  • the UE initiates, in an optional third substep 830, transmission of the user data to the host computer.
  • the host computer receives the user data transmitted from the UE, in accordance with the teachings of the embodiments described throughout this disclosure.
  • Fig. 9 is a flowchart illustrating a method implemented in a communication system, in accordance with one embodiment.
  • the communication system includes a host computer, a base station and a UE which may be those described with reference to Figs. 4 and 5. For simplicity of the present disclosure, only drawing references to Fig. 9 will be included in this section.
  • the base station receives user data from the UE.
  • the base station initiates transmission of the received user data to the host computer.
  • the host computer receives the user data carried in the transmission initiated by the base station.

Landscapes

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

Abstract

La présente invention concerne un procédé (100) mis en œuvre dans un dispositif terminal de demande de transmission de répétition automatique hybride HARQ. Le procédé (100) consiste à : détecter (110) une défaillance de faisceau; lancer (120) une procédure de récupération de défaillance de faisceau, BFR, au moyen d'un accès aléatoire; et s'abstenir (130) de transmettre une HARQ sur la base d'une ou de plusieurs autorisations configurées associées à un processus HARQ à utiliser pour un message 3, Msg3, pendant la procédure de BFR.
PCT/CN2019/082060 2018-07-02 2019-04-10 Procédé et dispositif terminal de transmission de harq WO2020007086A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNPCT/CN2018/094124 2018-07-02
CN2018094124 2018-07-02

Publications (1)

Publication Number Publication Date
WO2020007086A1 true WO2020007086A1 (fr) 2020-01-09

Family

ID=69060767

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/082060 WO2020007086A1 (fr) 2018-07-02 2019-04-10 Procédé et dispositif terminal de transmission de harq

Country Status (1)

Country Link
WO (1) WO2020007086A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112219367A (zh) * 2020-09-07 2021-01-12 北京小米移动软件有限公司 一种混合自动重传请求harq时延配置方法、装置及存储介质
WO2021155636A1 (fr) * 2020-02-06 2021-08-12 Oppo广东移动通信有限公司 Procédé et dispositif de configuration d'autorisation configurée par une liaison latérale, et support de stockage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106507497A (zh) * 2015-09-08 2017-03-15 华为技术有限公司 用于上行数据传输的方法、终端设备和网络设备
CN107466113A (zh) * 2016-06-03 2017-12-12 北京佰才邦技术有限公司 一种Msg3传输方法、装置和相关设备
US20180138962A1 (en) * 2016-04-13 2018-05-17 Qualcomm Incorporated System and method for beam adjustment request

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106507497A (zh) * 2015-09-08 2017-03-15 华为技术有限公司 用于上行数据传输的方法、终端设备和网络设备
US20180138962A1 (en) * 2016-04-13 2018-05-17 Qualcomm Incorporated System and method for beam adjustment request
CN107466113A (zh) * 2016-06-03 2017-12-12 北京佰才邦技术有限公司 一种Msg3传输方法、装置和相关设备

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ASUSTEK: "3 GPP TSG-RAN2 Meeting #83 R2-132630", THE COLLISION BETWEEN TTI BUNDLING AND MSG3 TRANSMISSION, 23 August 2013 (2013-08-23), XP050718259 *
SAMSUNG: "3GPP TSG-RAN WG2 Meeting #102 R2-1808811", MISCELLANEOUS CORRECTIONS, 25 May 2018 (2018-05-25), pages 1 - 4 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021155636A1 (fr) * 2020-02-06 2021-08-12 Oppo广东移动通信有限公司 Procédé et dispositif de configuration d'autorisation configurée par une liaison latérale, et support de stockage
CN112219367A (zh) * 2020-09-07 2021-01-12 北京小米移动软件有限公司 一种混合自动重传请求harq时延配置方法、装置及存储介质
CN112219367B (zh) * 2020-09-07 2023-10-10 北京小米移动软件有限公司 一种混合自动重传请求harq时延配置方法、装置及存储介质

Similar Documents

Publication Publication Date Title
US10904904B2 (en) Methods and devices for controlling override of configured grant
US11523361B2 (en) Method, terminal device and network device for time advance adjustment
TWI774906B (zh) 用於控制頻寬部分切換的方法與裝置
US11689271B2 (en) Methods and devices for beam failure recovery
JP7298683B2 (ja) Ｌｂｔ監視失敗の処理方法、装置及びシステム
KR102627291B1 (ko) Harq 송신을 용이하게 하기 위한 방법 및 디바이스
JP2020502918A (ja) 上りリンク伝送制御方法及びその装置、通信システム
JP2022516618A (ja) ２ステップランダムアクセスプロシージャのための方法および装置
WO2020007086A1 (fr) Procédé et dispositif terminal de transmission de harq
US20220022260A1 (en) Terminal Device, Network Device and Methods Therein
JP7052047B2 (ja) 半永続的なスケジューリングのための方法、ネットワーク装置及び端末装置
EP3711453B1 (fr) Procédés et dispositifs de groupage d'accusé de réception/accusé de réception négatif de requête automatique de répétition hybride
EP3808147B1 (fr) Noeud de réseau, dispositif de communication et procédés associés de transmission d'autorisations de liaison montante
US20220338273A1 (en) Methods, ue and network node for handling prach configurations
JP7413349B2 (ja) ランダムアクセス方法、データ受信方法及びその装置、通信システム
JP7456551B2 (ja) 信号の送受信方法、装置及び通信システム

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19831334

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19831334

Country of ref document: EP

Kind code of ref document: A1