WO2020223855A1 - Transmissions de rétroactions de requête automatique de répétition hybride - Google Patents

Transmissions de rétroactions de requête automatique de répétition hybride Download PDF

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Publication number
WO2020223855A1
WO2020223855A1 PCT/CN2019/085537 CN2019085537W WO2020223855A1 WO 2020223855 A1 WO2020223855 A1 WO 2020223855A1 CN 2019085537 W CN2019085537 W CN 2019085537W WO 2020223855 A1 WO2020223855 A1 WO 2020223855A1
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WO
WIPO (PCT)
Prior art keywords
indication
automatic repeat
hybrid automatic
repeat request
feedback group
Prior art date
Application number
PCT/CN2019/085537
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English (en)
Inventor
Tao Yang
Karol Schober
Original Assignee
Nokia Shanghai Bell Co., Ltd.
Nokia Solutions And Networks Oy
Nokia Technologies Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Shanghai Bell Co., Ltd., Nokia Solutions And Networks Oy, Nokia Technologies Oy filed Critical Nokia Shanghai Bell Co., Ltd.
Priority to PCT/CN2019/085537 priority Critical patent/WO2020223855A1/fr
Priority to CN201980098198.2A priority patent/CN114097262A/zh
Publication of WO2020223855A1 publication Critical patent/WO2020223855A1/fr

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    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals

Definitions

  • Embodiments of the present disclosure generally relate to the field of telecommunication and in particular, to transmissions of Hybrid Automatic Repeat Request (HARQ) feedbacks in joint network deployments.
  • HARQ Hybrid Automatic Repeat Request
  • the different types of cells may be overlapped with each other and are generally served by non-collocated network devices with respective frequency bands.
  • Terminal devices located in the certain geographical areas may be connected to a network device and communicate with the network device on downlink direction only. Transmissions of at least HARQ feedbacks are still needed in such deployment.
  • example embodiments of the present disclosure provide a solution for transmissions of HARQ feedbacks in above described deployment.
  • a first device comprising at least one processor; and at least one memory including computer program codes; the at least one memory and the computer program codes are configured to, with the at least one processor, cause the first device to: transmit to a second device an indication that the second device should transmit Hybrid Automatic Repeat Request feedbacks in a serving cell that is served by a third device within a frequency band; transmit to the second device one or more control information messages each scheduling at least one Hybrid Automatic Repeat Request process, and data associated with the process, the control information messages each comprising an indication of the process; and receive from the third device a Hybrid Automatic Repeat Request feedback group associated with the indication of the process, the feedback group being received by the third device from the second device.
  • a second device comprises at least one processor; and at least one memory including computer program codes; the at least one memory and the computer program codes are configured to, with the at least one processor, cause the second device to: receive from a first device an indication that uplink Hybrid Automatic Repeat Request feedbacks should be transmitted in a serving cell that is served by a third device within a frequency band; receive from the first device one or more control information messages each scheduling at least one Hybrid Automatic Repeat Request process, and data associated with the process, the control information messages each comprising an indication of the process; receive from the third device a control information message comprising information about a resource for a Hybrid Automatic Repeat Request feedback group associated with the indication of the process; and transmit, on the resource, the Hybrid Automatic Repeat Request feedback group associated with the indication of the process to the third device for forwarding by the third device to the first device.
  • a third device comprises at least one processor; and at least one memory including computer program codes; the at least one memory and the computer program codes are configured to, with the at least one processor, cause the third device to: in response to a request for allocating a resource for a Hybrid Automatic Repeat Request feedback group for at least one Hybrid Automatic Repeat Request process scheduled by a first device, allocate to a second device a resource for the Hybrid Automatic Repeat Request feedback group, the request comprising a payload size of the Hybrid Automatic Repeat Request feedback group, the second device located in a serving cell that is served by the third device with a frequency band; transmit to the second device a control information message comprising information about the allocated resource; receive from the second device the Hybrid Automatic Repeat Request feedback group associated with the indication of the process on the allocated resource; and forward to the first device the Hybrid Automatic Repeat Request feedback group associated with the indication of the process.
  • a method implemented at a first device comprises: transmitting to a second device an indication that the second device should transmit Hybrid Automatic Repeat Request feedbacks in a serving cell that is served by a third device within a frequency band; transmitting to the second device one or more control information messages each scheduling at least one Hybrid Automatic Repeat Request process, and data associated with the process, the control information messages each comprising an indication of the process; and receiving from the third device a Hybrid Automatic Repeat Request feedback group associated with the indication of the process, the feedback group being received by the third device from the second device.
  • a method implemented at a second device comprises: receiving from a first device an indication that uplink Hybrid Automatic Repeat Request feedbacks should be transmitted in a serving cell that is served by a third device within a frequency band; receiving from the first device one or more control information messages each scheduling at least one Hybrid Automatic Repeat Request process, and data associated with the process, the control information messages each comprising an indication of the process; receiving from the third device a control information message comprising information about a resource for a Hybrid Automatic Repeat Request feedback group associated with the indication of the process; and transmitting, on the resource, the Hybrid Automatic Repeat Request feedback group associated with the indication of the process to the third device for forwarding by the third device to the first device.
  • a method implemented at a third device comprises: in response to a request for allocating a resource for a Hybrid Automatic Repeat Request feedback group for at least one Hybrid Automatic Repeat Request process scheduled by a first device, allocating to a second device a resource for the Hybrid Automatic Repeat Request feedback group, the request comprising a payload size of the Hybrid Automatic Repeat Request feedback group, the second device located in a serving cell that is served by the third device with a frequency band; transmitting to the second device a control information message comprising information about the allocated resource; receiving from the second device the Hybrid Automatic Repeat Request feedback group associated with the indication of the process on the allocated resource; and forwarding to the first device the Hybrid Automatic Repeat Request feedback group associated with the indication of the process.
  • an apparatus comprising means for performing steps of the method according to the above fourth aspect.
  • an apparatus comprising means for performing steps of the method according to the above fifth aspect.
  • an apparatus comprising means for performing steps of the method according to the above sixth aspect.
  • a non-transitory computer readable medium comprising a computer program for causing an apparatus to perform at least the method according to any one of the above fourth to sixth aspects.
  • Fig. 1 illustrates an example communication network in which embodiments of the present disclosure may be implemented
  • Fig. 2 illustrates a signalling flowchart illustrating a process for transmission of HARQ feedbacks according to some embodiments of the present disclosure
  • Fig. 3 illustrates an example implementation of a process for transmission of HARQ feedbacks according to some embodiments of the present disclosure
  • Fig. 4 illustrates an example implementation of a process for transmission of HARQ feedbacks according to some other embodiments of the present disclosure
  • Fig. 5 illustrates an example implementation of a process for transmission of HARQ feedbacks according to still other embodiments of the present disclosure
  • Fig. 6 illustrates a flowchart of a method implemented at a first device according to some embodiments of the present disclosure
  • Fig. 7 illustrates a flowchart of a method implemented at a second device according to some embodiments of the present disclosure
  • Fig. 8 illustrates a flowchart of a method implemented at a third device according to some other embodiments of the present disclosure.
  • Fig. 9 illustrates a simplified block diagram of an apparatus that is suitable for implementing embodiments of the present disclosure.
  • Fig. 10 illustrates a block diagram of an example computer readable medium in accordance with some embodiments of the present disclosure.
  • references in the present disclosure 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 listed terms.
  • circuitry may refer to one or more or all of the following:
  • circuitry also covers an implementation of merely a hardware circuit or processor (or multiple processors) or portion of a hardware circuit or processor and its (or their) accompanying software and/or firmware.
  • circuitry also covers, for example and if applicable to the particular claim element, a baseband integrated circuit or processor integrated circuit for a mobile device or a similar integrated circuit in server, a cellular network device, or other computing or network device.
  • the term “communication network” refers to a network following any suitable communication standards, such as Long Term Evolution (LTE) , LTE-Advanced (LTE-A) , Wideband Code Division Multiple Access (WCDMA) , High-Speed Packet Access (HSPA) , Narrow Band Intemet of Things (NB-IoT) and so on.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • WCDMA Wideband Code Division Multiple Access
  • HSPA High-Speed Packet Access
  • NB-IoT Narrow Band Intemet of Things
  • the communications between a terminal device and a network device in the communication network may be performed according to any suitable generation communication protocols, including, 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 future fifth generation (5G) communication protocols, and/or any other protocols either currently known or to be developed in the future.
  • suitable generation communication protocols including, 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 future fifth generation (5G) communication protocols, and/or any other protocols either currently known or to be developed in the future.
  • Embodiments of the present disclosure may be applied in various communication systems. Given the rapid development in communications, there will of course also be future type communication technologies and systems with which the present disclosure may be embodied. It should not be seen as limiting the scope of the present disclosure to only the a
  • the term “network device” refers to a node in a communication network via which a terminal device accesses the network and receives services therefrom.
  • the network device may refer to a base station (BS) or an access point (AP) , for example, a node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , a NR NB (also referred to as a 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, depending on the applied terminology and technology.
  • BS base station
  • AP access point
  • NodeB or NB node B
  • eNodeB or eNB evolved NodeB
  • NR NB also referred to as a gNB
  • RRU Remote Radio Unit
  • RH radio header
  • terminal device refers to any end device that may be capable of wireless communication.
  • a terminal device may also be referred to as a communication device, user equipment (UE) , a Subscriber Station (SS) , a Portable Subscriber Station, a Mobile Station (MS) , or an Access Terminal (AT) .
  • UE user equipment
  • SS Subscriber Station
  • MS Mobile Station
  • AT Access Terminal
  • the terminal device may include, but not limited to, a mobile phone, a cellular phone, a smart phone, voice over IP (VoIP) phones, wireless local loop phones, a tablet, a wearable terminal device, a personal digital assistant (PDA) , portable computers, desktop computer, image capture terminal devices such as digital cameras, gaming terminal devices, music storage and playback appliances, 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) , an Internet of Things (loT) device, a watch or other wearable, a head-mounted display (HMD) , a vehicle, a drone, a medical device and applications (e.g., remote surgery) , an industrial device and applications (e.g., a robot and/or other wireless devices operating in an industrial and/or an automated processing chain contexts) , a consumer electronics device, a device operating on commercial and/
  • a terminal device may have an active connection with a source network device when being located within the corresponding cell coverage.
  • the terminal device may communicate with the source network device on the frequency band (s) of paired/unpaired spectrum in both uplink (UL) and downlink (DL) .
  • the terminal device may need to switch off a link in one direction such as the UL due to various reasons such as link quality degradation in the UL.
  • all UL activities of the terminal device have to depend on a frequency band of the target network device.
  • Examples of the UL activities of the terminal device may include transmission of Uplink Control Information (UCI) , transmission of DL measurement report, transmission of DL channel state information, and transmission of UL HARQ feedbacks and the like.
  • UCI Uplink Control Information
  • the UL and DL are within the same network device. There is no interaction between two network devices on how to leverage UL band of one network device to support DL transmissions of another network device.
  • a network device conducts the DL scheduling, and selects the appropriate downlink control channel resources in frequency and time domains for corresponding UL HARQ feedback transmission.
  • Information about these selected control channel resources is sent to a terminal device along the scheduling DCI by information elements (IEs) related to the DL control channels to guide behaviors of the terminal device. That is, the terminal device should decode these IEs related to the DL control channels and send the UL HARQ feedback according to this information.
  • IEs information elements
  • the terminal device should decode these IEs related to the DL control channels and send the UL HARQ feedback according to this information.
  • the DL control channels and corresponding DL data transmission may be scheduled in a high band system, while DL control information messages are sent in a low band system or vice-versa. Therefore, it is unclear how to select control channel resources and how to send it to the scheduled device, and what is the behaviour of the scheduled device.
  • Embodiments of the present disclosure provide a solution for transmission of HARQ feedbacks in joint network deployments.
  • different devices serve different cells with respective frequency bands.
  • a first device serves a first serving cell within a first frequency band.
  • the first device transmits to a second device an indication that the second device should transmit HARQ feedbacks in a serving cell that is served by a third device within a second frequency band.
  • the first device transmits to the second device one or more control information messages each scheduling at least one HARQ process, and data associated with the at least one HARQ process.
  • the control information messages each comprise an indication of the at least one HARQ process.
  • the second device transmits to the third device a HARQ feedback group associated with the indication of the at least one HARQ process.
  • the third device forwards to the first device the HARQ feedback group associated with the indication of the processes.
  • the first serving cell is linked with the second serving cell by the indication of the at least one HARQ process.
  • HARQ feedbacks for the first serving cell may be transmitted in the second serving cell.
  • Fig. 1 illustrates an example communication system 100 in which embodiments of the present disclosure may be implemented.
  • the system 100 includes device 111 (also referred to as a first device) and device 112 (also referred to as a third device) .
  • the devices 111, 112 serve respective areas 101 and 102 (also called as cells 101 and 102) using different frequency bands in both DL and UL. Such a frequency band may also be referred to as an operating frequency band of the corresponding device.
  • each of the devices 111 and 112 may be not collocated.
  • each of the devices 111 and 112 may be a network device.
  • each of the devices 111 and 112 may be a terminal device.
  • the system 100 also includes a second device 120, a fourth device 121 and a fifth device 122.
  • the devices 120, 121, 122 are capable of connecting and communicating in an UL and DL with either or both of the devices 111, 112 as long as the devices located within the corresponding cells or within the coverage of corresponding cells.
  • an UL refers to a link in a direction from a terminal device to a network device
  • a DL refers to a link in a direction from the network device to the terminal device.
  • the devices 111, 112 may also communicate with each other, for example, via a backhaul link.
  • each of the devices 120, 121 and 122 may be a terminal device.
  • each of the devices 120, 121 and 122 may be a network device.
  • the system 100 may include any suitable number of devices adapted for implementing embodiments of the present disclosure. Although not shown, it would be appreciated that one or more devices may be located in the cell 101 or 102.
  • acts of the devices 111 and 112 described herein may be performed by any of the devices 120, 121 and 122.
  • acts of the devices 120, 121 and 122 described herein may be performed by any of the devices 111 and 112.
  • Communications in the communication system 100 may be implemented according to any proper communication protocol (s) , comprising, but not limited to, cellular communication protocols of the first generation (1G) , the second generation (2G) , the third generation (3G) , the fourth generation (4G) and the fifth generation (5G) and on the like, wireless local network communication protocols such as Institute for Electrical and Electronics Engineers (IEEE) 802.11 and the like, and/or any other protocols currently known or to be developed in the future.
  • s cellular communication protocols of the first generation (1G) , the second generation (2G) , the third generation (3G) , the fourth generation (4G) and the fifth generation (5G) and on the like, wireless local network communication protocols such as Institute for Electrical and Electronics Engineers (IEEE) 802.11 and the like, and/or any other protocols currently known or to be developed in the future.
  • IEEE Institute for Electrical and Electronics Engineers
  • the communication may utilize any proper wireless communication technology, comprising but not limited to: Code Divided Multiple Address (CDMA) , Frequency Divided Multiple Address (FDMA) , Time Divided Multiple Address (TDMA) , Frequency Divided Duplexer (FDD) , Time Divided Duplexer (TDD) , Multiple-Input Multiple-Output (MIMO) , Orthogonal Frequency Divided Multiple Access (OFDMA) and/or any other technologies currently known or to be developed in the future.
  • CDMA Code Divided Multiple Address
  • FDMA Frequency Divided Multiple Address
  • TDMA Time Divided Multiple Address
  • FDD Frequency Divided Duplexer
  • TDD Time Divided Duplexer
  • MIMO Multiple-Input Multiple-Output
  • OFDMA Orthogonal Frequency Divided Multiple Access
  • the coverage ranges of the cells 101, 102 of the devices 111, 112 are tightly related to the operating frequency bands of the devices 111, 112.
  • Fig. 1 shows an example where the operating frequency bands of the devices 111, 112 are different, with the operating frequency band of the device 111 higher than the operating frequency band of the device 112. It is very possible that the coverage range of the cell 101 is smaller than that of the cell 102, due to a more serious path-loss situation in the high frequency band system. In the shown example, the cell 101 is overlapped with the cell 102.
  • the large cell 102 may sometimes be referred to as a macro cell and the device 112 may be referred to as a macro base station, while the relatively small cell 101 may sometimes be referred to as a small cell and the device 111 may be referred to as a small base station.
  • the device 111 may be operating at sub 6 GHz, such as 3.5 GHz, while the device 112 may be operating at a millimetre-wave (mmW) frequency band, such as at 28 GHz. It is to be understood that other operating frequency bands are also possible for the devices 111, 112.
  • mmW millimetre-wave
  • the cell 101 and/or the cell 102 may have an asymmetric UL and DL budget.
  • asymmetric budget easily happens in a cell with a high frequency band.
  • the different budget between the UL and DL may be up to 25 dB.
  • Fig. 1 shows that the asymmetric UL and DL in the cell 101.
  • the cell 101 includes an UL coverage area 103 and a DL coverage area that is the same as the range of the cell 101.
  • the UL coverage area 103 is smaller than the DL coverage area.
  • up to 25 dB budget difference may lead to a situation where the UL coverage area is only about 1/4 of the DL coverage area.
  • the main reasons are the small UL transmission power of terminal devices and/or smaller UL transmission beamforming gain, as compared with the DL case.
  • a terminal device 120 is still communicating with the device 111 in a DL with a good/sufficient quality while the UL from that device to the device 111 is of poor quality.
  • the device 120 was previously in the coverage area 103 and had both UL and DL connections with the device 111. After movement from area 103 to area 101, the device 120 i can receive the DL transmissions from the device 111. However, at this time, the UL quality from the device 120 to the device 111 is of poor and insufficient for communication.
  • the UL and DL with the device 111 both works well.
  • the terminal device 122 may establish a connection with the device 112 in both UL and DL.
  • the device 120 is allowed to maintain only its UL to the device 112 and still maintain its DL with the device 111 and 112.
  • the frequency band of the device 111 has been described as being higher than that of the device 112, in some other cases, the frequency band of the device 112 may be higher than or equal to that of the device 111. In these cases, there may also occur when a device has a good DL and a worse UL with one of the devices 111, 112 and may thus switch the UL to the other one of the devices 111, 112.
  • Fig. 2 shows a process 200 for transmission of HARQ feedbacks according to an example embodiment of the present disclosure.
  • the process 200 may involve the device 120 and the devices 111, 112 as illustrated in Fig. 1.
  • the process 200 for transmission of HARQ feedbacks has been described in the communication system 100 of Fig. 1, this process may be likewise applied to other communication scenarios where different devices are jointly deployed to provide respective serving cells.
  • transmission of HARQ feedbacks of the device 120 is discussed, a similar process can be applied for any other devices in the cell 101 or 102 to transmit their HARQ feedbacks.
  • the first device 111 transmits 210 to the second device 120 an indication that the second device 120 should transmit HARQ feedbacks in the serving cell 102 that is served by the third device 112 within a second frequency band.
  • the second device 120 is also located in the serving cell 101 that is served by the first device 111 within a first frequency band.
  • Whether to transmit the indication to the second device 120 depends on various factors.
  • One possible factor is that the second device 120 is in a link asymmetric status in which DL with the first device 111 satisfies a DL requirement and UL with the first device 111 fails to satisfy an UL requirement. This indicates that the second device 120 is still within the good DL coverage area 101 but is to be out of the UL coverage area 103 served by the device 111, leading to asymmetry in qualities in the UL and DL.
  • Other factors causing the transmission of the indication may involve different UL/DL access controls at the first device 111, UL/DL load distribution between devices, and/or other reasons.
  • the second device 120 from the first device 111 receives the indication that the second device 120 should transmit HARQ feedbacks in the serving cell 102 served by device 112.
  • the first device 111 may also transmit to the third device 112 the indication that the second device 120 should transmit HARQ feedbacks in the serving cell 102.
  • the first device 111 transmits 220 to the second device 120 one or more control information messages each scheduling at least one HARQ process, and data associated with the at least one HARQ process.
  • the control information messages each comprise an indication of the at least one HARQ process.
  • the second device 120 receives from the first device 111 the one or more control information messages and the data associated with the at least one HARQ process.
  • the first device 111 may transmit to the third device 112 a request for allocating a resource for the HARQ feedback group.
  • the second device 110 may transmit to the third device 112 the request for allocating a resource for the HARQ feedback group.
  • the request comprises a payload size of the HARQ feedback group.
  • the request further comprises the indication of the at least one process associated with the request.
  • the third device 112 Upon receiving the request for allocating a resource for the HARQ feedback group, the third device 112 allocates 240 to the second device 120 a resource for the HARQ feedback group.
  • the third device 112 transmits 250 to the second device 120 a control information message comprising information about the allocated resource.
  • Allocated resource may comprise of UL slot location and time and frequency domain resource within the slot.
  • the control information message from the third device 112 comprises a field indicating zero frequency domain resource allocation.
  • the second device 120 Upon receiving from the third device 112 the control information message comprising the information about the allocated resource, the second device 120 transmits 260, on the allocated resource, the HARQ feedback group associated with the indication of the at least one process to the third device 112.
  • the third device 112 Upon receiving the HARQ feedback group from the second device 120, the third device 112 forwards 270 the HARQ feedback group to the first device 111.
  • each of the control information messages in the serving cell 101 of the first device 111 comprises the indication of the at least one HARQ process, and the HARQ feedback group associated with the indication of the processes is transmitted in the serving cell 102 of the third device 112.
  • the serving cell 101 of the first device 111 is linked with the serving cell 102 of the third device 112 by the indication of the at least one HARQ process.
  • HARQ feedbacks for the serving cell 101 of the first device 111 may be transmitted in the serving cell 102 of the third device 112.
  • the third device 112 forwards to the first device 111 the HARQ feedback group associated with the indication of the at least one process, the first device 111 may identify whether the forwarded HARQ feedback group is the one the first device 111 intends to receive.
  • Fig. 3 illustrates an example implementation of a process 300 for transmission of HARQ feedbacks according to some embodiments of the present disclosure.
  • the indication of the at least one HARQ process is an indication of a slot in which a HARQ feedback group associated with the indication of the process is to be transmitted.
  • each of the control information messages from the first device 111 may comprise a field for carrying the indication of the slot in which the HARQ feedback group is to be transmitted.
  • the first device 111 may include the indication of the slot in the field of the control information message so as to transmit to the second device 120.
  • the indication of the slot may indicate the number of slots between reception of the last transmitted control information message and transmission of the HARQ feedback group.
  • the indication of the slot may indicate an index of the slot in which the HARQ feedback group is to be transmitted.
  • the first device 111 transmits to the second device 120 a first control information message in slot #1 311 and a second control information message in slot #3 312.
  • a value of the DAI represents an accumulative number of PDSCH transmissions or HARQ processes associated with PDSCH transmissions.
  • Each of the first and second control information messages comprises an indication of a slot #10 316, indicating that a HARQ feedback group 341 for the HARQ process #0 321 and the HARQ process #1 322 is to be transmitted in the slot #10 316.
  • the payload size of feedback group is determined based on last value of DAI. Assuming that HARQ processes are single TB, the payload size of group 341 is equal to 2.
  • the indication of the slot #10 316 may be seven, which indicates that there are seven slots between an end of reception of the control information message and an end of transmission of the HARQ feedback group 341.
  • the indication of the slot #10 316 may indicate an index (i.e., 10) of the slot.
  • the first device 111 or the second device 120 may transmit to the third device 112 a request for allocating a resource for the HARQ feedback group 341.
  • the request comprises the payload size of the HARQ feedback group 341 and the indication of the slot #10 316.
  • the third device 112 Upon receiving the request, the third device 112 allocates to the second device 120 a resource corresponding to the payload size of the HARQ feedback group 341. For example, the third device 112 allocates an UL control channel resource (represented by “X” ) in the slot #10 316 to the second device 120. In turn, in a slot #7 313, the third device 112 transmits a control information message 331 to the second device 120.
  • the control information message 331 comprises information about the control channel resource X in the slot #10 316.
  • the second device 120 may transmit, on the control channel resource X in the slot #10 316, the HARQ feedback group 341 associated with the indication of the slot #10 316 to the third device 112.
  • the transmitted HARQ feedback group comprises HARQ feedbacks corresponding to the slot #10 316 indicated in the control information messages from the first device 111 and matching the slot #10 316 indicated in the control information message from third device 112.
  • the third device 112 Upon receiving the HARQ feedback group 341 associated with the indication of the slot #10 316, the third device 112 forwards to the first device 111 the HARQ feedback group 341 associated with the indication of the slot #10 316. In some example embodiments, the third device 112 forwards to the first device 111 the HARQ feedback group 341 together with the indication of the slot #10 316.
  • the first device 111 transmits to the second device 120 a third control information message in slot #7 313, a fourth control information message in slot #8 314, and a fifth control information message in slot #9 315.
  • the third control information message schedules a HARQ process #2 323, and data associated with the HARQ process #2 323.
  • the fourth control information message schedules a HARQ process #3 324, and data associated with the HARQ process #3 324.
  • the fifth control information message schedules a HARQ process #4 325, and data associated with the HARQ process #4 325.
  • Each of the third, fourth and fifth control information messages comprises an indication of a slot #15 318, indicating that a HARQ feedback group 342 for the HARQ processes #2, #3 and #4 is to be transmitted in the slot #15 318.
  • the indication of the slot #15 318 may be six, which indicates that there are six slots between an end of reception of the control information message and an end of transmission of the HARQ feedback group 342.
  • the indication of the slot #15 318 may indicate an index (i.e., 15) of the slot.
  • the first device 111 or the second device 120 may transmit to the third device 112 a request for allocating a resource for the HARQ feedback group 342.
  • the request comprises a payload size determined based on last value of DAI of the HARQ feedback group 342 and the indication of the slot #15 318.
  • the third device 112 Upon receiving the request, the third device 112 allocates to the second device 120 a resource corresponding to the payload size of the HARQ feedback group 342. For example, the third device 112 allocates an UL control channel resource (represented by “Y” ) in the slot #15 318 to the second device 120. In turn, in a slot #12 317, the third device 112 transmits a control information message 332 to the second device 120.
  • the control information message 332 comprises information about the control channel resource Y in the slot #15 318.
  • the second device 120 may transmit, on the control channel resource Y in the slot #15 318, the HARQ feedback group 342 associated with the indication of the slot #15 318 to the third device 112.
  • the third device 112 Upon receiving the HARQ feedback group 342 associated with the indication of the slot #15 318, the third device 112 forwards to the first device 111 the HARQ feedback group 342 associated with the indication of the slot #15 318. In some example embodiments, the third device 112 forwards to the first device 111 the HARQ feedback group 342 together with the indication of the slot #15 318.
  • Fig. 4 illustrates an example implementation of a process 400 for transmission of HARQ feedbacks according to some other embodiments of the present disclosure.
  • the indication of the at least one HARQ process is an identification (ID) of a HARQ feedback group.
  • each of the control information messages from the first device 111 may comprise a field for carrying an indication of a slot in which the HARQ feedback group is to be transmitted.
  • the first device 111 does not include in the field the indication of the slot, but includes the ID of the HARQ feedback group in the field.
  • the field for carrying the indication of the slot may be reused for carrying the ID of the HARQ feedback group.
  • a format of the control information messages does not need to change. Therefore, no additional signalling overhead is needed for transmission of the control information messages from the first device 111.
  • Each of the control information messages comprises an ID #1 431 of a HARQ feedback group 451 associated with the HARQ process #0 421 and the HARQ process #1 422.
  • the first device 111 or the second device 120 may transmit to the third device 112 a request for allocating a resource for the HARQ feedback group 451.
  • the request comprises a payload size of the HARQ feedback group 451 and the ID #1 431 of the HARQ feedback group 451.
  • the payload size of the feedback group is determined based on last value of DAI.
  • the third device 112 Upon receiving the request, the third device 112 allocates to the second device 120 a resource corresponding to the payload size of the HARQ feedback group 451. For example, the third device 112 allocates a control channel resource (represented by “Z” ) in the slot #10 316 to the second device 120. In turn, in a slot #8 314, the third device 112 transmits a control information message 441 to the second device 120.
  • the control information message 441 comprises information about the control channel resource Z in the slot #10 316.
  • the control information message 441 also comprises the ID #1 of the HARQ feedback group 451.
  • the control information message 441 may comprises the ID #1 of the HARQ feedback group 451 in an unused time domain allocation field. Thus, no additional signalling overhead is needed for the transmission of the control information message from the third device 112.
  • the second device 120 may transmit, on the control channel resource Z in the slot #10 316, the HARQ feedback group 451 associated with the ID #1 to the third device 112.
  • the third device 112 Upon receiving the HARQ feedback group 451 associated with the ID #1, the third device 112 forwards to the first device 111 the HARQ feedback group 451 associated with the ID #1. In some example embodiments, the third device 112 forwards to the first device 111 the HARQ feedback group 451 together with the ID #1.
  • Each of the control information messages comprises an ID #2 432 of a HARQ feedback group 452 associated with the HARQ process #2 423, the HARQ process #3 424 and the HARQ process #4 425.
  • the first device 111 or the second device 120 may transmit to the third device 112 a request for allocating a resource for the HARQ feedback group 452.
  • the request comprises a payload size of the HARQ feedback group 452 and the ID #2 432 of the HARQ feedback group 452.
  • the payload size of the feedback group is determined based on last value of DAI.
  • the third device 112 Upon receiving the request, the third device 112 allocates to the second device 120 a resource corresponding to the payload size of the HARQ feedback group 452. For example, the third device 112 allocates an UL control channel resource (represented by “U” ) in a slot #14 319 to the second device 120. In turn, in a slot #12 317, the third device 112 transmits a control information message 442 to the second device 120.
  • the control information message 442 comprises information about the control channel resource U in the slot #14 319.
  • the control information message 442 also comprises the ID #2 of the HARQ feedback group 452.
  • the second device 120 Upon receiving the control information message 442, the second device 120 transmits, on the control channel resource U in the slot #14 319, the HARQ feedback group 452 associated with the ID #2 to the third device 112.
  • the third device 112 Upon receiving the HARQ feedback group 452 associated with the ID #2, the third device 112 forwards to the first device 111 the HARQ feedback group 452 associated with the ID #2. In some example embodiments, the third device 112 forwards to the first device 111 the HARQ feedback group 452 together with the ID #2.
  • the second device 120 may transmit more HARQ feedback groups at a time.
  • the first device 111 or the second device 120 may transmit to the third device 112 a request for allocating a resource for the HARQ feedback groups 451 and 452.
  • the request comprises a payload size of the HARQ feedback groups 451, 452, the ID #1 431 of the HARQ feedback group 451, and the ID #2 432 of the HARQ feedback group 452.
  • the third device 112 Upon receiving the request, the third device 112 allocates to the second device 120 a resource corresponding to the payload size of the HARQ feedback groups 451 and 452. For example, the third device 112 allocates an UL control channel resource (represented by “W” ) in the slot #14 319 to the second device 120. In turn, for example, in a slot #12 317, the third device 112 transmits a control information message to the second device 120.
  • the control information message comprises information about the control channel resource W in the slot #14 319.
  • the control information message also comprises the ID #1 431 of the HARQ feedback group 451, and the ID #2 of the HARQ feedback group 452.
  • the second device 120 may transmit, on the control channel resource W in the slot #14 319, the HARQ feedback group 451 associated with the ID #1 and the HARQ feedback group 452 associated with the ID #2 to the third device 112.
  • the second device 120 may transmit the HARQ feedback group 451 together with the ID #1, and the HARQ feedback group 452 together with the ID #2.
  • the HARQ feedback group 451 and the HARQ feedback group 452 may be arranged in a predetermined order.
  • the HARQ feedback group 451 and the HARQ feedback group 452 may be arranged in an order of the IDs of the HARQ feedback groups.
  • Fig. 5 illustrates an example implementation of a process 500 for transmission of HARQ feedbacks according to some embodiments of the present disclosure.
  • the indication of the at least one HARQ process is an ID of the at least one HARQ process.
  • the first device 111 transmits to the second device 120 a control information message in slot #1 311, which schedules a HARQ process #4 521 and data associated with the HARQ process #4 521.
  • the first device 111 also transmits to the second device 120 a control information message in slot #3 312, which schedules a HARQ process #6 522 and data associated with the HARQ process #6 522.
  • the first device 111 further transmits to the second device 120 a control information message in slot #4 31A, which schedules a HARQ process #7 523 and data associated with the HARQ process #7 523.
  • the first device 111 also transmits to the second device 120 a control information message in slot #5 31B, which schedules a HARQ process #9 524 and data associated with the HARQ process #9 524.
  • the control information messages from the first device 111 comprise an ID 4 of HARQ process #4 521, an ID 6 of HARQ process #6 522, an ID 7 of HARQ process #7 523, an ID 9 of HARQ process #9 524, respectively.
  • the first device 111 or the second device 120 may transmit to the third device 112 a request for allocating a resource for HARQ feedbacks.
  • the HARQ feedbacks may be feedbacks of HARQ processes received by the second device 120 since a previous feedback transmission.
  • the HARQ processes received by the second device 120 since a previous feedback transmission include HARQ process #4 521, HARQ process #6 522, HARQ process #7 523 and HARQ process #9 524.
  • HARQ feedbacks for the HARQ process #4 521, HARQ process #6 522, HARQ process #7 523 and HARQ process #9 524 may form a HARQ feedback group 532.
  • the request comprises a payload size of the HARQ feedback group 532.
  • the request may comprise the IDs of the four scheduled HARQ processes.
  • the third device 112 Upon receiving the request, the third device 112 allocates to the second device 120 a resource corresponding to the payload size of the HARQ feedback group 532. For example, the third device 112 allocates an UL control channel resource (represented by “V” ) in a slot #10 316 to the second device 120. In turn, in a slot #7 313, the third device 112 transmits a control information message 531 to the second device 120.
  • the control information message 531 comprises information about the control channel resource V in the slot #10 316.
  • the second device 120 Upon receiving the control information message 531, the second device 120 transmits, on the control channel resource V in the slot #10 316, the HARQ feedback group 532 associated with the IDs #4, #6, #7 and #9 of the HARQ processes to the third device 112.
  • the HARQ feedback group 532 may include a bitmap 541 for IDs of the HARQ processes and a group of Acknowledge (ACK) /Negative Acknowledge (NACK) 542 corresponding to the HARQ processes.
  • each bit is associated with an ID of a HARQ process. For example, a value of “1” of a bit may indicate that a feedback for the HARQ process having an ID associated with this bit is transmitted. With the bitmap, feedback overhead may be reduced.
  • IDs of the HARQ processes and ACK/NACK corresponding to the HARQ processes may be jointly coded to form a plurality of coded sequences.
  • the HARQ feedback group 532 includes a coded sequence 551 associated with the HARQ process #4, a coded sequence 552 associated with the HARQ process #6, a coded sequence 553 associated with the HARQ process #7 and a coded sequence 554 associated with the HARQ process #9.
  • an ID of a HARQ process and the respective ACK or NACK may be arranged in a predetermined order.
  • the first four bits “0100” represents the ID #4 of HARQ process 521 and the rest one or more bits represent the respective ACK.
  • the second device 120 may decide to report which feedbacks of HARQ processes according to the resource allocated by the third device 112.
  • the example implementation is very flexible and reliable.
  • the third device 112 Upon receiving the HARQ feedback group 532 associated with the IDs #4, #6, #7 and #9 of the HARQ processes, the third device 112 forwards to the first device 111 the HARQ feedback group 532 associated with the IDs #4, #6, #7 and #9 of the HARQ processes. In some example embodiments, the third device 112 forwards to the first device 111 the HARQ feedback group 532 together with the IDs #4, #6, #7 and #9 of the HARQ processes.
  • Fig. 6 shows a flowchart of an example method 600 implemented at a first device in accordance with some embodiments of the present disclosure. For the purpose of discussion, the method 600 will be described from the perspective of the first device 111 with reference to Fig. 1.
  • the first device 111 transmits to the second device an indication that the second device should transmit HARQ feedbacks in a serving cell that is served by a third device within a frequency band.
  • the first device 111 transmits to the second device one or more control information messages each scheduling at least one HARQ process, and data associated with the process, the control information messages each comprising an indication of the process
  • the first device 111 receives from the third device a HARQ feedback group associated with the indication of the process, the feedback group being received by the third device from the second device.
  • the method 600 further comprises transmitting to the third device 112 a request for allocating a resource for the HARQ feedback group, the request comprising a payload size of the HARQ feedback group.
  • the request further comprises the indication of the process associated with the request.
  • the indication of the process comprises an indication of a slot in which the HARQ feedback group is to be transmitted.
  • the indication of the process comprises an identification of the HARQ feedback group.
  • transmitting the control information messages comprises: transmitting the control information messages that each comprises the identification of the HARQ feedback group in a field for carrying an indication of a slot in which the HARQ feedback group is to be transmitted.
  • the indication of the process comprises an identification of the at least one HARQ process.
  • transmitting the indication that the second device 120 should transmit HARQ feedbacks in the serving cell that is served by the third device 112 comprises: transmitting the indication in response to a determination that the second device 120 is out of an uplink coverage area of the serving cell that is served by the first device 111 within the second frequency band.
  • the first and third devices are network devices that are not collocated, and the second device 120 is a terminal device.
  • Fig. 7 shows a flowchart of an example method 700 implemented at a second device in accordance with some embodiments of the present disclosure. For the purpose of discussion, the method 700 will be described from the perspective of the second device 120 with reference to Fig. 1.
  • the second device 120 receives from a first device 111 an indication that uplink HARQ feedbacks should be transmitted in a serving cell that is served by a third device 112 within a frequency band;
  • the second device 120 receives from the first device 111 one or more control information messages each scheduling at least one HARQ process, and data associated with the process, the control information messages each comprising an indication of the process;
  • the second device 120 receives from the third device 112 a control information message comprising information about a resource for a HARQ feedback group associated with the indication of the process;
  • the second device 120 transmits, on the resource, the HARQ feedback group associated with the indication of the process to the third device 112 for forwarding by the third device 112 to the first device 111.
  • the transmitted feedback group associated with the indication of the process comprises at least one of the following: feedbacks of HARQ processes received by the second device 120 since a previous feedback transmission; feedbacks of HARQ corresponding to a slot indicated in the one or more control information messages from the first device 111 and matching the slot indicated in the control information message from third device 112; feedbacks of HARQ of one or more HARQ feedback groups indicated in the control information message from third device 112.
  • the method 700 further comprises transmitting to the third device 112 a request for allocating a resource for the HARQ feedback group, the request comprising a payload size of the HARQ feedback group.
  • the request further comprises the indication of the process.
  • the indication of the process comprises an indication of a slot in which the HARQ feedback group is to be transmitted.
  • the indication of the process comprises an identification of the HARQ feedback group.
  • receiving the control information messages comprises: receiving the control information messages from the first device 111 that each comprises the identification of the HARQ feedback group in a field for carrying an indication of a slot in which the HARQ feedback group is to be transmitted.
  • the indication of the process comprises an identification of the at least one HARQ process.
  • receiving the control information message from the third device 112 comprises: receiving the control information message from the third device 112 that comprises a field indicating zero frequency domain resource allocation.
  • receiving receive the indication that the second device 120 should transmit HARQ feedbacks in the serving cell that is served by the third device 112 comprises: receiving the indication in response to the second device 120 being out of an uplink coverage area of the serving cell that is served by the first device 111 within the second frequency band.
  • the first and third devices 111, 112 are network devices that are not collocated, and the second device 120 is a terminal device.
  • Fig. 8 shows a flowchart of an example method 800 implemented at a third device in accordance with some embodiments of the present disclosure. For the purpose of discussion, the method 800 will be described from the perspective of the third device 112 with reference to Fig. 1.
  • the third device 112 allocates to a second device 120 a resource for the HARQ feedback group, the request comprising a payload size of the HARQ feedback group, the second device 120 located in a serving cell that is served by the third device 112 with a frequency band.
  • the third device 112 transmits to the second device 120 a control information message comprising information about the allocated resource
  • the third device 112 receives from the second device 120 the HARQ feedback group associated with the indication of the process on the allocated resource.
  • the third device 112 forwards to the first device 111 the HARQ feedback group associated with the indication of the process.
  • the indication of the processes comprises at least one of the following: an identification of the at least one HARQ process; an indication of a slot in which the HARQ feedback group is to be transmitted, and an identification of the HARQ feedback group.
  • the method 800 further comprises: receiving the request for allocating the resource from the first device 111 or the second device 120.
  • the request further comprises the indication of the process.
  • transmitting the control information message comprises: transmitting the control information message that comprises a field indicating zero frequency domain resource allocation.
  • the second device 120 is out of an uplink coverage area of the serving cell that is served by the first device 111.
  • the first and third devices 111, 112 are network devices that are not collocated, and the second device 120 is a terminal device.
  • an apparatus capable of performing any of the method 600 may comprise means for performing the respective steps of the method 600.
  • the means may be implemented in any suitable form.
  • the means may be implemented in a circuitry or software module.
  • the apparatus comprises means for transmitting to the second device 120 an indication that the second device 120 should transmit HARQ feedbacks in a serving cell that is served by a third device 112 within a frequency band; means for transmitting to the second device 120 one or more control information messages each scheduling at least one HARQ process, and data associated with the process, the control information messages each comprising an indication of the process; and means for receiving from the third device 112 a HARQ feedback group associated with the indication of the process, the feedback group being received by the third device 112 from the second device 120.
  • the apparatus further comprises means for transmitting to the third device 112 a request for allocating a resource for the HARQ feedback group, the request comprising a payload size of the HARQ feedback group.
  • the request further comprises the indication of the process associated with the request.
  • the indication of the process comprises an indication of a slot in which the HARQ feedback group is to be transmitted.
  • the indication of the process comprises an identification of the HARQ feedback group.
  • means for transmitting the control information messages comprises: means for transmitting the control information messages that each comprises the identification of the HARQ feedback group in a field for carrying an indication of a slot in which the HARQ feedback group is to be transmitted.
  • the indication of the process comprises an identification of the at least one HARQ process.
  • means for transmitting the indication that the second device 120 should transmit HARQ feedbacks in the serving cell that is served by the third device 112 comprises: means for transmitting the indication in response to a determination that the second device 120 is out of an uplink coverage area of the serving cell that is served by the first device 111 within the second frequency band.
  • the apparatus and third device are network devices that are not collocated, and the second device 120 is a terminal device.
  • an apparatus capable of performing any of the method 700 may comprise means for performing the respective steps of the method 700.
  • the means may be implemented in any suitable form.
  • the means may be implemented in a circuitry or software module.
  • the apparatus comprises means for receiving from a first device 111 an indication that uplink HARQ feedbacks should be transmitted in a serving cell that is served by a third device 112 within a frequency band; means for receiving from the first device 111 one or more control information messages each scheduling at least one HARQ process, and data associated with the process, the control information messages each comprising an indication of the process; means for receiving from the third device 112 a control information message comprising information about a resource for a HARQ feedback group associated with the indication of the process; and means for transmitting, on the resource, the HARQ feedback group associated with the indication of the process to the third device 112 for forwarding by the third device 112 to the first device 111.
  • the transmitted feedback group associated with the indication of the process comprises at least one of the following: feedbacks of HARQ processes received by apparatus since a previous feedback transmission; feedbacks of HARQ corresponding to a slot indicated in the one or more control information messages from the first device 111 and matching the slot indicated in the control information message from third device 112; feedbacks of HARQ of one or more HARQ feedback groups indicated in the control information message from third device 112.
  • the apparatus further comprises means for transmitting to the third device 112 a request for allocating a resource for the HARQ feedback group, the request comprising a payload size of the HARQ feedback group.
  • the request further comprises the indication of the process.
  • the indication of the process comprises an indication of a slot in which the HARQ feedback group is to be transmitted.
  • the indication of the process comprises an identification of the HARQ feedback group.
  • means for receiving the control information messages comprises: means for receiving the control information messages from the first device 111 that each comprises the identification of the HARQ feedback group in a field for carrying an indication of a slot in which the HARQ feedback group is to be transmitted.
  • the indication of the process comprises an identification of the at least one HARQ process.
  • means for receiving the control information message from the third device 112 comprises: means for receiving the control information message from the third device 112 that comprises a field indicating zero frequency domain resource allocation.
  • means for receiving receive the indication that apparatus should transmit HARQ feedbacks in the serving cell that is served by the third device 112 comprises: means for receiving the indication in response to apparatus being out of an uplink coverage area of the serving cell that is served by the first device 111 within the second frequency band.
  • the first and third devices 111, 112 are network devices that are not collocated, and apparatus is a terminal device.
  • an apparatus capable of performing any of the method 800 may comprise means for performing the respective steps of the method 800.
  • the means may be implemented in any suitable form.
  • the means may be implemented in a circuitry or software module.
  • the apparatus comprise in response to a request for allocating a resource for a HARQ feedback group for at least one HARQ process scheduled by a first device 111, means for allocating to a second device 120 a resource for the HARQ feedback group, the request comprising a payload size of the HARQ feedback group, the second device 120 located in a serving cell that is served by the third device 112 with a frequency band; means for transmitting to the second device 120 a control information message comprising information about the allocated resource; means for receiving from the second device 120 the HARQ feedback group associated with the indication of the process on the allocated resource; and means for forwarding to the first device 111 the HARQ feedback group associated with the indication of the process.
  • the indication of the processes comprises at least one of the following: an identification of the at least one HARQ process; an indication of a slot in which the HARQ feedback group is to be transmitted, and an identification of the HARQ feedback group.
  • the apparatus further comprises: means for receiving the request for allocating the resource from the first device 111 or the second device 120.
  • the request further comprises the indication of the process.
  • means for transmitting the control information message comprises: means for transmitting the control information message that comprises a field indicating zero frequency domain resource allocation.
  • the second device 120 is out of an uplink coverage area of the serving cell that is served by the first device 111.
  • the first device 111 and the apparatus are network devices that are not collocated, and the second device 120 is a terminal device.
  • Fig. 9 is a simplified block diagram of a device 900 that is suitable for implementing embodiments of the present disclosure.
  • the device 900 may be provided to implement the communication device, for example any of the devices 111, 112 and 120 as shown in Fig. 1.
  • the device 900 includes one or more processors 910, one or more memories 920 coupled to the processor910, and one or more communication modules 940 coupled to the processor 910.
  • the communication module 940 is for bidirectional communications.
  • the communication module 940 has at least one antenna to facilitate communication.
  • the communication interface may represent any interface that is necessary for communication with other network elements.
  • the processor 910 may be of any type suitable to the local technical network and may include one or more of the following: general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples.
  • the device 900 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock which synchronizes the main processor.
  • the memory 920 may include one or more non-volatile memories and one or more volatile memories.
  • the non-volatile memories include, but are not limited to, a Read Only Memory (ROM) 924, an electrically programmable read only memory (EPROM) , a flash memory, a hard disk, a compact disc (CD) , a digital video disk (DVD) , and other magnetic storage and/or optical storage.
  • the volatile memories include, but are not limited to, a random access memory (RAM) 922 and other volatile memories that will not last in the power-down duration.
  • a computer program 930 includes computer executable instructions that are executed by the associated processor 910.
  • the program 930 may be stored in the ROM 920.
  • the processor 910 may perform any suitable actions and processing by loading the program 930 into the RAM 920.
  • the embodiments of the present disclosure may be implemented by means of the program 930 so that the device 900 may perform any process of the disclosure as discussed with reference to Figs. 2 and 6 to 8.
  • the embodiments of the present disclosure may also be implemented by hardware or by a combination of software and hardware.
  • the program 930 may be tangibly contained in a computer readable medium which may be included in the device 900 (such as in the memory 920) or other storage devices that are accessible by the device 900.
  • the device 900 may load the program 930 from the computer readable medium to the RAM 922 for execution.
  • the computer readable medium may include any types of tangible non-volatile storage, such as ROM, EPROM, a flash memory, a hard disk, CD, DVD, and the like.
  • Fig. 10 shows an example of the computer readable medium 1000 in form of CD or DVD.
  • the computer readable medium has the program 930 stored thereon.
  • various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. While various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using some other pictorial representations, it is to be understood that the block, apparatus, system, technique or method described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
  • the present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer readable storage medium.
  • the computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target real or virtual processor, to carry out the methods 600, 700 and 800 as described above with reference to Figs. 6-8.
  • program modules include routines, programs, libraries, objects, classes, components, data structures, or the like that perform particular tasks or implement particular abstract data types.
  • the functionality of the program modules may be combined or split between program modules as desired in various embodiments.
  • Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed device, program modules may be located in both local and remote storage media.
  • Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowcharts and/or block diagrams to be implemented.
  • the program code may execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
  • the computer program codes or related data may be carried by any suitable carrier to enable the device, apparatus or processor to perform various processes and operations as described above.
  • Examples of the carrier include a signal, computer readable medium, and the like.
  • the computer readable medium may be a computer readable signal medium or a computer readable storage medium.
  • a computer readable medium may include but not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of the computer readable storage medium would include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM) , a read-only memory (ROM) , an erasable programmable read-only memory (EPROM or Flash memory) , an optical fiber, a portable compact disc read-only memory (CD-ROM) , an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

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Abstract

La présente invention concerne, selon des modes de réalisation, une transmission de rétroactions HARQ dans un déploiement de réseau joint. Un premier dispositif transmet à un deuxième dispositif une indication selon laquelle le deuxième dispositif doit transmettre des rétroactions HARQ dans une cellule de desserte qui est desservie par un troisième dispositif dans une bande de fréquences. Le premier dispositif transmet au deuxième dispositif un ou plusieurs messages d'informations de commande commandant chacun au moins un processus HARQ et des données associées au processus, les messages d'informations de commande comprenant chacun une indication du processus. Le premier dispositif reçoit en provenance du troisième dispositif un groupe de rétroaction HARQ associé à l'indication du processus, le groupe de rétroaction étant reçu par le troisième dispositif à partir du deuxième dispositif.
PCT/CN2019/085537 2019-05-05 2019-05-05 Transmissions de rétroactions de requête automatique de répétition hybride WO2020223855A1 (fr)

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WO2022052912A1 (fr) * 2020-09-08 2022-03-17 华为技术有限公司 Procédé et appareil de rétroaction de liaison montante

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