WO2018201468A1 - 反馈信息的发送和接收方法、装置以及通信*** - Google Patents

反馈信息的发送和接收方法、装置以及通信*** Download PDF

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Publication number
WO2018201468A1
WO2018201468A1 PCT/CN2017/083296 CN2017083296W WO2018201468A1 WO 2018201468 A1 WO2018201468 A1 WO 2018201468A1 CN 2017083296 W CN2017083296 W CN 2017083296W WO 2018201468 A1 WO2018201468 A1 WO 2018201468A1
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Prior art keywords
data
user equipment
information
hybrid automatic
repeat request
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PCT/CN2017/083296
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English (en)
French (fr)
Inventor
张健
王昕�
周华
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富士通株式会社
张健
王昕�
周华
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Application filed by 富士通株式会社, 张健, 王昕�, 周华 filed Critical 富士通株式会社
Priority to PCT/CN2017/083296 priority Critical patent/WO2018201468A1/zh
Publication of WO2018201468A1 publication Critical patent/WO2018201468A1/zh

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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

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a method and device for transmitting and receiving feedback information, and a communication system.
  • the user equipment waits for feedback from the network device (for example, the base station) in the subframe n+4 after the physical uplink shared channel (PUSCH) transmission is initiated in the subframe n.
  • PUSCH physical uplink shared channel
  • ACK/NACK information If a NACK is received, the user equipment initiates a retransmission in subframe n+8.
  • the ACK/NACK information may be transmitted through a Physical Hybrid Automation Repeat Request Indicator Channel (PHICH) or a Physical Downlink Control Channel (PDCCH). More specifically, The indication may be indicated by PDCCH format 0 or information called an uplink grant (UL grant).
  • PHICH Physical Hybrid Automation Repeat Request Indicator Channel
  • PDCCH Physical Downlink Control Channel
  • the new data indicator (NDI, New Data Indicator) field in the UL grant changes, it indicates that a new transport block (TB) is dispatched (equivalent to ACK), and if the NDI field is unchanged, it indicates that the retransmission is scheduled. (equivalent to NACK).
  • the user equipment does not have to wait for the ACK/NACK feedback of the previous TB to receive a new TB transmission, but can initiate up to 8 parallel data transmissions, that is, LTE can support up to 8 hybrid automatic repeat request (HARQ) processes. .
  • HARQ hybrid automatic repeat request
  • the base station when the base station uses the UL grant to schedule retransmission, it always maintains a fixed timing relationship with the previous transmission, and the user equipment can know which TB in the HARQ process needs to be retransmitted according to the timing relationship, and accordingly, the base station Soft merges are also performed for the initial and retransmissions belonging to the same HARQ process. Since the UL grant has a fixed timing with the previous transmission, multiple uplink HARQ processes can be well supported in LTE.
  • an uplink grant-free transmission is introduced for services such as URLLC and mMTC.
  • the grant-free transmission does not need to initiate a resource request to the base station when the user equipment has data, nor does it need to receive the scheduling signaling of the base station, but initiates data transmission immediately.
  • Grant-free transmission can reduce air interface delay and save signaling overhead.
  • 5G systems also strive to support more flexible HARQ processes, meaning that the UL grant does not have to maintain a fixed timing relationship with the previous transmission. Therefore, in grant-free transmission, new methods are needed to support multiple HARQ processes.
  • Embodiments of the present invention provide a method, an apparatus, and a communication system for transmitting and receiving feedback information.
  • the network device explicitly or implicitly transmits resource location information and/or hybrid automatic repeat request process number of the data to the user equipment, and feedback information corresponding to the data; thereby, the transmitted data and the uplink grant signaling
  • the feedback information can establish a correspondence and can support multiple HARQ processes in the unscheduled transmission.
  • a method for sending feedback information which supports multiple hybrid automatic repeat request processes in an unscheduled transmission, the method comprising:
  • the resource location information and/or the hybrid automatic repeat request process number and the feedback information corresponding to the data are sent to the user equipment explicitly or implicitly.
  • a device for transmitting feedback information which supports a plurality of hybrid automatic repeat request processes in an unscheduled transmission, the device comprising:
  • a data receiving unit which receives data sent by the user equipment by using a schedule-free transmission manner
  • An information determining unit that determines resource location information of the data and/or a hybrid automatic repeat request process number of the data
  • an information sending unit that explicitly or implicitly transmits the resource location information and/or the hybrid automatic repeat request process number and the feedback information corresponding to the data to the user equipment.
  • a method for receiving feedback information which supports multiple hybrid automatic repeat request processes in an unscheduled transmission, and the method includes:
  • a receiving apparatus for feedback information which supports a plurality of hybrid automatic repeat request processes in a schedule-free transmission, the apparatus comprising:
  • a data sending unit that transmits data to the network device through a schedule-free transmission
  • An information receiving unit that receives resource location information of the data that is explicitly or implicitly transmitted by the network device and/or a hybrid automatic repeat request process number of the data, and feedback information corresponding to the data.
  • a communication system including:
  • a network device comprising the transmitting device of the feedback information as described in the second aspect
  • User equipment comprising receiving means for feedback information as described in the fourth aspect.
  • the network device explicitly or implicitly transmits the resource location information of the data and/or the hybrid automatic repeat request process number to the user equipment, and the feedback information corresponding to the data;
  • the transmitted data and the feedback information in the uplink grant signaling can establish a correspondence relationship, and can support multiple HARQ processes in the unscheduled transmission.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present invention.
  • 2 is a diagram showing an example in which the data transmitted during the schedule-free transmission and the feedback information in the uplink grant signaling cannot correspond;
  • FIG. 3 is a schematic diagram of a method for sending feedback information according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a method for receiving feedback information according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a method for transmitting and receiving feedback information according to an embodiment of the present invention.
  • FIG. 6 is a diagram showing an example of resource location information according to an embodiment of the present invention.
  • FIG. 7 is another exemplary diagram of resource location information according to an embodiment of the present invention.
  • FIG. 8 is a diagram showing an example of repeated transmission of data according to an embodiment of the present invention.
  • FIG. 9 is a diagram showing an example of data transmission using a HARQ process number according to an embodiment of the present invention.
  • FIG. 10 is a diagram showing an example of defining an unscheduled transmission ID according to an embodiment of the present invention.
  • 11 is a diagram showing an example of implicitly transmitting HARQ process numbers using different modulation symbols according to an embodiment of the present invention
  • FIG. 12 is a diagram showing an example of a blind detection modulation symbol according to an embodiment of the present invention.
  • FIG. 13 is a diagram showing an example of repeated transmission of data according to an embodiment of the present invention.
  • FIG. 14 is a schematic diagram of an apparatus for transmitting feedback information according to an embodiment of the present invention.
  • FIG. 15 is a schematic diagram of an apparatus for receiving feedback information according to an embodiment of the present invention.
  • 16 is a schematic diagram of a network device according to an embodiment of the present invention.
  • FIG. 17 is a schematic diagram of a user equipment according to an embodiment of the present invention.
  • the terms “first”, “second”, etc. are used to distinguish different elements from the title, but do not indicate the spatial arrangement or chronological order of the elements, and these elements should not be used by these terms. Limited.
  • the term “and/or” includes any and all combinations of one or more of the associated listed terms.
  • the terms “comprising,” “comprising,” “having,” or “an” are used to distinguish different elements from the title, but do not indicate the spatial arrangement or chronological order of the elements, and these elements should not be used by these terms. Limited.
  • the term “and/or” includes any and all combinations of one or more of the associated listed terms.
  • the term “communication network” or “wireless communication network” may refer to a network that conforms to any communication standard such as Long Term Evolution (LTE), Enhanced Long Term Evolution (LTE-A, LTE- Advanced), Wideband Code Division Multiple Access (WCDMA), High-Speed Packet Access (HSPA), and the like.
  • LTE Long Term Evolution
  • LTE-A Enhanced Long Term Evolution
  • WCDMA Wideband Code Division Multiple Access
  • HSPA High-Speed Packet Access
  • the communication between devices in the communication system may be performed according to any phase of the communication protocol, and may include, for example but not limited to, the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and future. 5G, New Radio (NR), etc., and/or other communication protocols currently known or to be developed in the future.
  • the term "network device” refers to, for example, a device in a communication system that accesses a terminal device to a communication network and provides a service for the terminal device.
  • the network device may include, but is not limited to, a device: a base station (BS, a base station), an access point (AP, an Access Point), a transmission and reception point (TRP), a broadcast transmitter, and a mobility management entity (MME, Mobile). Management Entity), gateway, server, Radio Network Controller (RNC), Base Station Controller (BSC), and so on.
  • BS base station
  • AP access point
  • TRP transmission and reception point
  • MME mobility management entity
  • Management Entity gateway
  • server Radio Network Controller
  • BSC Base Station Controller
  • the base station may include, but is not limited to, a Node B (NodeB or NB), an evolved Node B (eNodeB or eNB), and a 5G base station (gNB), and the like, and may further include a Remote Radio Head (RRH). , Remote Radio Unit (RRU), relay or low power node (eg femto, pico, etc.).
  • RRH Remote Radio Head
  • RRU Remote Radio Unit
  • base station may include some or all of their functions, and each base station may provide communication coverage for a particular geographic area.
  • the term "cell” can refer to a base station and/or its coverage area, depending on the context in which the term is used.
  • the term "user equipment” (UE) or “Terminal Equipment” (TE) refers to, for example, a device that accesses a communication network through a network device and receives a network service.
  • the user equipment may be fixed or mobile, and may also be referred to as a mobile station (MS, Mobile Station), a terminal, a subscriber station (SS, Subscriber Station), an access terminal (AT, Access Terminal), a station, and the like.
  • the user equipment may include, but is not limited to, a device: a cellular phone (Cellular Phone), a personal digital assistant (PDA, Personal Digital Assistant), a wireless modem, a wireless communication device, and a handheld device.
  • a device a cellular phone (Cellular Phone), a personal digital assistant (PDA, Personal Digital Assistant), a wireless modem, a wireless communication device, and a handheld device.
  • Equipment machine type communication equipment, laptop computers, cordless phones, smart phones, smart watches, digital cameras, and the like.
  • the user equipment may also be a machine or device that performs monitoring or measurement, and may include, but is not limited to, a Machine Type Communication (MTC) terminal, In-vehicle communication terminal, device to device (D2D, Device to Device) terminal, machine to machine (M2M, Machine to Machine) terminal, and the like.
  • MTC Machine Type Communication
  • D2D Device to Device
  • M2M Machine to Machine
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present invention, schematically illustrating a case where a user equipment and a network device are taken as an example.
  • the communication system 100 may include a network device 101 and a user equipment 102 (for simplicity)
  • FIG. 1 illustrates only one user equipment and one network device as an example, but the present invention is not limited thereto.
  • an existing service or a service that can be implemented in the future can be performed between the network device 101 and the user equipment 102.
  • these services may include, but are not limited to, enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and high reliability low latency communication (URLLC, Ultra-Reliable and Low). -Latency Communication), and so on.
  • FIG. 2 is a diagram showing an example in which the data transmitted during the schedule-free transmission and the feedback information in the uplink grant signaling cannot correspond.
  • the user equipment selects one resource block (RB, Resource Block) to transmit TB1, that is, a HARQ process is started.
  • RB Resource Block
  • the user equipment may initiate a new HARQ process before receiving the uplink grant UL grant for TB1.
  • the uplink grant UL grant in Figure 2 is used to schedule retransmission of a certain TB or to schedule new data transmission.
  • the user equipment Before receiving the uplink grant, the user equipment has new data arriving, so a new data transmission is initiated, that is, TB2 is sent, and TB2 belongs to a new HARQ process.
  • a channel or the like should be widely understood as a channel between a transmitting end and a receiving end, but is not limited to a PDCCH, a PHICH, a PDSCH, or a PUCCH defined in an LTE system, and may be, for example, an enhanced e-PDCCH, an e-PHICH, or an e-PDCCH.
  • PUSCH or e-PUCCH may be an edge link control channel or an edge link data channel in a D2D scenario.
  • FIG. 3 is a schematic diagram of a method for transmitting feedback information according to an embodiment of the present invention, which is described from the network device side. As shown in FIG. 3, the method includes:
  • Step 301 The network device receives data sent by the user equipment by using a scheduling-free transmission manner.
  • Step 302 The network device determines resource location information of the data and/or a hybrid automatic repeat request process number of the data;
  • Step 303 The network device sends the resource location information and/or the hybrid automatic repeat request process number, and the feedback information corresponding to the data, to the user equipment, either explicitly or implicitly.
  • the resource location information may be offset information based on a Transmission Time Interval (TTI) of the feedback information.
  • TTI Transmission Time Interval
  • the transmission time interval (TTI) may include any one of the following: a slot, a subframe, a frame, a time unit that is shorter than a time slot, that is, a mini-slot; The invention is not limited thereto, and may be other time units.
  • the present invention will be described below by taking a time slot as an example.
  • FIG. 4 is a schematic diagram of a method for receiving feedback information according to an embodiment of the present invention, which is described from the user equipment side. As shown in FIG. 4, the method includes:
  • Step 401 The user equipment sends data to the network device by using a scheduling-free transmission manner
  • Step 402 The user equipment receives resource location information of the data that is sent by the network device explicitly or implicitly, and/or a hybrid automatic repeat request process number of the data, and feedback information corresponding to the data.
  • the resource location information is a sequence number of the data in a time-frequency grid based on a transmission time interval in which the feedback information is transmitted; the time-frequency grid includes the user equipment from a time domain. Transmitting the data to a plurality of transmission time intervals (e.g., a maximum range of TTI) at which the feedback information is received, including a total bandwidth configured for the unscheduled transmission on a frequency domain.
  • a plurality of transmission time intervals e.g., a maximum range of TTI
  • FIG. 5 is a schematic diagram of a method for transmitting and receiving feedback information according to an embodiment of the present invention, which is further described from both sides of a network device and a user equipment. As shown in FIG. 5, the method includes:
  • Step 501 The user equipment sends data to the network device by using a non-scheduled transmission mode.
  • Step 502 The network device determines resource location information of the data and/or a hybrid automatic repeat request process number of the data.
  • the network device may determine the resource location information of the data according to the time and frequency of receiving the data. For details, refer to Embodiment 2 to be described later.
  • the Demodulation Reference Signal (DMRS) corresponding to the data may implicitly carry the HARQ process ID corresponding to the data, so that the network device may determine by blind detection. For details of the HARQ process number of the data, refer to Embodiment 4 to be described later.
  • DMRS Demodulation Reference Signal
  • Step 503 The network device determines feedback information corresponding to the data; for example, NACK or ACK, but the invention is not limited thereto.
  • Step 504 The network device explicitly or implicitly sends the resource location information and/or the hybrid automatic repeat request process number to the user equipment, and feedback information corresponding to the data.
  • the network device may explicitly send the resource location information and the feedback information through a control channel (eg, PDCCH, PHICH, etc., but the present invention is not limited thereto); for details, refer to Embodiment 2 to be described later. .
  • the network device may explicitly send the feedback information through a control channel, and implicitly scramble the Cyclic Redundancy Check (CRC) code of the control channel, implicitly The resource location information is sent.
  • CRC Cyclic Redundancy Check
  • the network device may explicitly send the HARQ process ID and the feedback information through a control channel; for details, refer to Embodiment 4 to be described later.
  • the present invention is not limited thereto, and a specific embodiment may be determined according to actual conditions.
  • FIG. 3 to FIG. 5 only schematically illustrate the embodiments of the present invention, but the present invention is not limited thereto.
  • the order of execution between the various steps can be appropriately adjusted, and other steps can be added or some of the steps can be reduced.
  • Those skilled in the art can appropriately adapt according to the above, and are not limited to the above description of FIGS. 3 to 5.
  • the network device sends the resource location information of the data to the user equipment explicitly or implicitly.
  • the information and/or the hybrid automatic repeat request process number, and the feedback information corresponding to the data; thereby, the transmitted data and the feedback information in the uplink grant signaling can establish a correspondence relationship, and can support in the unscheduled transmission. Multiple HARQ processes.
  • This embodiment describes the resource location information for explicitly transmitting data on the basis of the first embodiment.
  • the user equipment when the user equipment initiates the uplink data transmission, the user equipment receives the corresponding uplink grant signaling (notifying the data transmission success or retransmitting the data, which is equivalent to indicating the ACK/NACK of the data. At the moment, there will be a maximum time interval between the two, that is, how often the uplink grant is received in the worst case.
  • the grid can be divided in the matrix window surrounded by the two, and the division manner is TTI in the time direction.
  • the granularity is the granularity of the bandwidth actually occupied by each unscheduled transmission in the frequency direction. Therefore, one grid corresponds to all the time-frequency resources occupied by one unscheduled transmission.
  • FIG. 6 is a schematic diagram of resource location information according to an embodiment of the present invention.
  • a network device configures a user equipment to perform unscheduled transmission in a range of four RBs, and the user equipment selects one RB to transmit each time.
  • the scheduling unit is a slot slot.
  • the rectangular window size is 4 time slots in the time domain and 4 RBs in the frequency domain, corresponding to each grid.
  • One RB and one time slot are the time-frequency resources occupied by each TB transmission.
  • the grids within the rectangular window can be numbered such that each grid has a unique number.
  • the numbering can be performed in the order of increasing frequency first and then decreasing time. More specifically, starting from the latest time slot in the rectangular window, the number is first incremented in the frequency increment direction, and after reaching the highest frequency, it moves to the previous time slot in the opposite direction of the time axis, and then continues to be numbered in the frequency increment direction.
  • the network device sends or the user equipment receives the uplink grant, the rectangular window slides to a position aligned with the previous time slot of the uplink grant.
  • the transmitted TB will be corresponding to a grid number in the matrix window, and the network device can send the number to the user equipment by using uplink authorization signaling, and the user equipment can know which one is for the uplink authorization.
  • the sliding window is visible to both network devices and user devices, so both parties can locate the same resources and TBs by grid number.
  • the network device can indicate the number 15 in the uplink grant, and the user equipment receives the uplink grant, and can know that it should be associated with TB1. If the first upstream grant is for TB2, the network device feeds back number 7. At the second uplink grant transmission and reception time, the rectangular window slides to the previous time slot of the second uplink grant, and TB2 corresponds to the grid number 11. The time interval from TB1 to the second uplink grant exceeds the maximum time interval for the uplink grant, and TB1 does not fall into the rectangular window. The uplink grant cannot be for TB1.
  • FIG. 7 is another exemplary diagram of resource location information according to an embodiment of the present invention.
  • a user equipment transmits a TB in a time slot n, and if the base station can support the base station in the time slot n, the corresponding TB is returned through the uplink authorization.
  • the new transmit/retransmit scheduling signaling (ACK/NACK) then the matrix window size should be increased by 1 slot length and should be slid to align with the slot in which the upstream grant is located.
  • the resource location information may be explicitly sent to the user equipment through a control channel.
  • the rectangular window contains M rasters, which can be used in uplink authorization signaling. Bits are positioned on a particular grid.
  • the NDI field in the uplink grant can be used to indicate ACK/NACK.
  • the NDI changes, it indicates that the feedback is ACK information, and the new data transmission can be scheduled at the same time, which is equivalent to switching the user equipment from the unscheduled transmission mode to the scheduling-based transmission mode.
  • the NDI is unchanged, it indicates that the NACK information is fed back, and the user equipment can be scheduled to retransmit the TB that fails to be decoded. In this case, the initial transmission of the user equipment is an unscheduled transmission, and the retransmission is based on the scheduled transmission.
  • one or more resource locations of the data in the multiple repeated transmission may be sent to the user equipment. For example, when a user equipment transmits a certain TB, repeated transmissions may be performed to increase the probability of correct decoding.
  • FIG. 8 is a diagram showing an example of repeated transmission of data according to an embodiment of the present invention. As shown in FIG. 8, each TB is repeatedly transmitted four times. The above indication of the location of the resource can still be used. In the uplink grant signaling, the location of the resource that occurs in any one of the multiple repeat transmissions may be indicated. For example, as shown in FIG. 8, the uplink grants all indicate the smallest grid number occupied by the repeated transmission.
  • the total number of rasters in a rectangular window may not be equal to the number of HARQ processes.
  • the user equipment can maintain the correspondence between the grid number and the HARQ process ID. Assuming that each HARQ process corresponds to a buffer buffer, each raster number received by the user equipment will correspond to a cache of a HARQ process.
  • the usage rules of the HARQ cache may be predefined. For example, the user equipment cyclically uses the cache of the HARQ process according to the HARQ process number incrementing sequence. When a cache of a certain HARQ process is occupied, the cache may be skipped. Use the next available HARQ process cache. In this way, the network device can notify the resource location of the corresponding TB only in the uplink grant, and the HARQ process ID and cache usage can be maintained by the user equipment.
  • the network device may further send the HARQ process ID corresponding to the data to the user equipment.
  • the resource location and the HARQ process number are both notified to the user equipment in the uplink grant.
  • the uplink grant of this format may be defined as Downlink Control Information (DCI) format 0A.
  • DCI Downlink Control Information
  • the uplink device can always include the resource location and the HARQ process ID field. That is, the network device always uses the DCI format 0A for ACK/NACK feedback, and the user equipment will always blindly check the DCI format 0A, and use it as a new transmission/ Retransmission schedule.
  • the resource location information and the hybrid automatic repeat request process number are indicated; for subsequent retransmission of the data, the hybrid automatic repeat request process number is indicated. That is, the DCI format 0A may be fed back only for the TB of the first unscheduled transmission, which is equivalent to assigning the HARQ process number to the TB, so that for the retransmission scheduling of the TB, the network device may use only the HARQ process number.
  • the uplink grant which is represented as DCI format 0, has fewer HARQ process number fields than DCI format 0A, thus saving signaling overhead.
  • the user equipment performs blind detection on the DCI format 0A only after transmitting a certain TB in the unscheduled transmission mode. At the same time, the user equipment always blindly checks the DCI format 0, so that it can be timely informed whether it is switched to the scheduled transmission mode. Or being scheduled to retransmit a TB.
  • FIG. 9 is a diagram showing an example of data transmission using a HARQ process number according to an embodiment of the present invention.
  • the user equipment receives the uplink grant and is scheduled to retransmit TB1.
  • the user equipment will blindly check DCI format0, because the subsequent scheduling of TB1 will be transmitted in the form of DCI format 0; when new data arrives, the user The device initiates the TB2 transmission in a non-scheduled transmission mode.
  • the user equipment will blindly check DCI format 0A and DCI format0, because the subsequent scheduling of TB2 is transmitted in the form of DCI format 0A, and the subsequent scheduling of TB1 is transmitted in the form of DCI format 0.
  • the same user equipment cannot transmit more than one TB at the same time, and the time-frequency two-dimensional rectangular window will be degraded into a one-dimensional rectangular window containing only the time dimension, and the resource location where the TB is located may only be indicated by The time offset (such as the time slot offset) at the time of the uplink grant is sufficient.
  • Embodiments of the present invention perform resource location information for implicitly transmitting data on the basis of Embodiments 1 and 2. Description. The content of the same as Embodiment 1 or 2, such as the definition of resource location information, etc., will not be described again.
  • the network device may implicitly send the resource location information to the user equipment by scrambling the control channel. For example, the network device may use the identifier information to scramble the CRC of the control channel, where the identifier information may be determined by a DMRS sequence corresponding to the user equipment and a number corresponding to the resource location.
  • different DM-RS sequences are usually configured for different user equipments in advance, and when the user equipment initiates data transmission, the DM-RSs are also transmitted at the same time.
  • the network device can determine whether the user equipment is currently performing data transmission, that is, detecting user activity.
  • the DM-RS sequence and the user equipment satisfy a one-to-one mapping relationship. This is for the purpose of supporting the URLLC user equipment. Since the URLLC user equipment is sensitive to the delay requirement, it is not desirable for different user equipments to use the same DM-RS. Transmission, otherwise the network device will not be able to distinguish the user equipment, and the channel estimation error at this time is likely to cause demodulation failure.
  • the total number of DM-RS sequences is N
  • a maximum of N user equipments can be supported in the resources of the unscheduled transmission.
  • the N DM-RS sequences are numbered, and in fact the DM-RS IDs have been in one-to-one correspondence with the user IDs. Reusing the assumption that the rectangular window and the grid number are used to locate a resource of a certain TB in Embodiment 2, assuming that the rectangular window contains M resource grids (ie, numbers 1 to M), corresponding to resource positions that may appear in M TBs.
  • the MN numbers different from each other may be constructed by using N DM-RS sequences and M resource location numbers, for example, may be defined as an unscheduled transmission ID.
  • FIG. 10 is a diagram showing an example of defining an unscheduled transmission ID according to an embodiment of the present invention. As shown in FIG. 10, each M consecutive numbers correspond to the same DM-RS sequence, and numbers 0 to M-1 correspond to a DM-RS sequence 0. The numbers M to 2M-1 correspond to the DM-RS sequence 1, and so on.
  • the user equipment that can directly initiate data transmission when the data arrives can be defined as a user equipment that is scheduled to be transmitted.
  • the user equipment that needs to send a resource request and wait for the network device to schedule data transmission is called a user equipment based on scheduled transmission.
  • An independent control resource region which is called a non-scheduled control resource region, may be configured for the user equipment that is not scheduled to be transmitted. All the user equipments that are not scheduled to be transmitted are blindly detected in the PDCCH.
  • An additional control resource region which is called a scheduling-based control resource region, may be separately configured for the user equipment based on the scheduled transmission, and all the user equipments based on the scheduled transmission blindly check the PDCCH in the scheduling-based control resource region. The two regions occupy physical resources that do not coincide with each other in time and frequency.
  • the PDCCH transmitted in the scheduling-free control resource region may be scrambled using the previously defined unscheduled transmission ID.
  • the PDCCH transmitted in the scheduling-based control resource region is scrambled using the UE ID (such as C-RNTI, etc.).
  • the user equipment needs to blindly check the PDCCH (including uplink grant).
  • the user equipment needs to perform M CRC descrambling attempts when determining whether the PDCCH CRC is correct.
  • the user equipment will try to descramble the CRC by using M unscheduled transmission IDs of the number i ⁇ [(n-1)M, nM-1].
  • M unscheduled transmission IDs of the number i ⁇ [(n-1)M, nM-1].
  • the user equipment can know that the PDCCH is a signaling sent to itself, and can know that the physical resource location number corresponding to the uplink grant for performing the new transmission/retransmission scheduling is i- nM.
  • the HARQ process number may not be present in the uplink authorization signaling, and the HARQ process number may be maintained only by the user equipment;
  • the HARQ process number field is used in the uplink grant signaling to explicitly indicate the HARQ process number.
  • the PDCCH CRC in the unscheduled transmission control resource region can be scrambled by using the resource location of any one of the multiple repetition transmissions.
  • This embodiment describes the HARQ process number implicitly carrying data on the basis of the first embodiment.
  • the DMRS corresponding to the data may implicitly carry the HARQ process number corresponding to the data.
  • different HARQ processes use different DMRSs. That is, different DM-RS sequences may be used for different HARQ process configurations of the user equipment, and there is a one-to-one correspondence between the two.
  • the network device for example, the base station
  • the network device can learn the current HARQ process number by blindly checking the DM-RS sequence, and the network device can explicitly indicate the HARQ process number in the feedback uplink authorization signaling, so that the user equipment can Know which HARQ process corresponds to the current uplink grant, or which TB corresponds to.
  • This method can establish the association between the uplink grant and the HARQ process, but there is a problem that it is easy to consume the DM-RS sequence resources.
  • the total number of DM-RS sequences orthogonal to each other is limited, and DM-RS resources are important for unscheduled transmission.
  • orthogonal DM-RS sequences can be used to support concurrent A user equipment that is not scheduled to transmit, if multiple orthogonal DM-RS sequences are allocated for multiple HARQ processes of the same user equipment, correspondingly reduces the number of concurrent user equipments that can be accommodated.
  • a single DM-RS sequence may be configured for each user equipment.
  • the DM-RS sequence is multiplied by different modulation symbols to form a plurality of different
  • each modulation symbol multiplied by the DM-RS sequence corresponds to one HARQ process. Since the DM-RS sequence is multiplied by one symbol, the orthogonality of the DM-RS sequences between different users is not affected.
  • FIG. 11 is a diagram showing an example of implicitly transmitting HARQ process numbers using different modulation symbols in accordance with an embodiment of the present invention.
  • the user equipment has 4 HARQ processes, and 4 modulation symbols from the QPSK constellation can be used, and each modulation symbol is associated with one HARQ process.
  • the modulation associated with it is associated with it.
  • the symbol is multiplied to the DM-RS sequence for transmission.
  • the network device (for example, the base station) can identify which DM-RSs are transmitted through blind detection, and need to determine which modulation symbol is carried in the DM-RS sequence, so as to be able to perform the modulation according to the HARQ process.
  • the correspondence between the two determines the HARQ number and feeds it back to the user equipment through the uplink grant signaling.
  • the base station may first detect which DM-RS sequences exist, and this step is the same as the base station blind check user activity in Embodiment 3. The difference is that the base station next needs to detect the modulation symbols carried by the DM-RS sequence.
  • Figure 12 is a diagram showing an example of a blind detection modulation symbol according to an embodiment of the present invention.
  • a network device for example, a base station
  • the association between the TB and the HARQ process is specified by the user equipment, and the user equipment selects a modulation symbol, that is, specifies a HARQ process for the TB.
  • the user equipment learns the HARQ process ID, and the user equipment can locate a specific TB by using the number.
  • Embodiment 4 is also applicable to the TB repeated transmission scenario. In fact, Embodiment 4 also solves the problem of the ambiguity of the base station when merging the repeated transmissions.
  • FIG. 13 is a diagram showing an example of repeated transmission of data according to an embodiment of the present invention. As shown in FIG. 13, the user equipment performs four repetition transmissions for each TB. The user equipment transmits TB1 and TB2 in time slot n and TB1, TB2 and a new data TB3 in time slot n+1.
  • the base station can detect 3 TBs in slot n+1; but normally, the base station does not know which of the 3 TBs is associated with the previous TB1 or TB2 belongs to the same HARQ process, so the correct soft merge cannot be performed.
  • the base station can identify each HARQ process by detecting modulation symbols carried by the DM-RS, so that TBs belonging to the same HARQ process can be merged.
  • the network device (for example, the base station) can learn the HARQ process to which the currently demodulated TB belongs by using the blind detection, and carry the HARQ process ID in the uplink grant signaling to the user equipment.
  • the method of Embodiment 3 can also be reused to implicitly notify the user equipment of the HARQ process number.
  • the N DM-RS sequences and the Q HARQ process numbers are used to construct QN numbers that are different from each other, and are defined as an unscheduled transmission ID.
  • Each Q consecutive number corresponds to the same DM-RS sequence, that is, corresponds to the same user equipment, numbers 0 to Q-1 correspond to DM-RS sequence 0, number Q to 2Q-1 corresponds to DM-RS sequence 1, and so on.
  • the other parts of the method are the same as in the third embodiment.
  • the network device can scramble the CRC of the control channel using the identification information.
  • the identifier information may be determined by a demodulation reference signal sequence corresponding to the user equipment and a number corresponding to the resource location; or the identifier information may be a demodulation reference signal sequence and a location corresponding to the user equipment.
  • the hybrid automatic repeat request process number is determined; or the identifier information may be determined by a demodulation reference signal sequence corresponding to the user equipment, a number corresponding to the resource location, and the hybrid automatic repeat request process number.
  • the invention is not limited thereto.
  • Embodiments of the present invention provide an apparatus for transmitting feedback information, which supports multiple HARQ processes in scheduling-free transmission.
  • the device for transmitting the feedback information may be, for example, a network device, or may be one or some components or components configured in the network device.
  • the same contents of the sixth embodiment and the first to fifth embodiments will not be described again.
  • FIG. 14 is a schematic diagram of an apparatus for transmitting feedback information according to an embodiment of the present invention. As shown in FIG. 14, the apparatus 1400 for transmitting feedback information includes:
  • a data receiving unit 1401 which receives data sent by the user equipment by using a schedule-free transmission manner
  • An information determining unit 1402 that determines resource location information of the data and/or a hybrid automatic repeat request process number of the data;
  • the information sending unit 1403 explicitly or implicitly transmits the resource location information and/or the hybrid automatic repeat request process number to the user equipment, and feedback information corresponding to the data.
  • the resource location information may be offset information based on a transmission time interval in which the feedback information is sent.
  • the resource location information is a sequence number of the data in a time-frequency grid based on a transmission time interval in which the feedback information is transmitted; the time-frequency grid includes the user equipment from a time domain. And transmitting the data to a maximum transmission time interval in which the feedback information is received, including a total bandwidth configured for the unscheduled transmission on a frequency domain.
  • the information sending unit 1403 may further send the hybrid automatic repeat request process number corresponding to the data to the user equipment.
  • the resource location information and the hybrid automatic repeat request process number may be always indicated in the initial transmission and retransmission.
  • the resource location information and the hybrid automatic repeat request process number are indicated; for subsequent retransmission of the data, the hybrid automatic repeat request process number is indicated.
  • one or more resource locations of the data in the multiple repeated transmission may be sent to the user equipment.
  • the information sending unit 1403 may explicitly send the resource location information to the user equipment through a control channel; in another embodiment, the information sending unit 1403 may implicitly scramble the control channel.
  • the resource location information is sent to the user equipment.
  • the apparatus 1400 for transmitting feedback information may further include:
  • a scrambling unit 1404 which uses the identification information to scramble the cyclic redundancy check code of the control channel, where the identifier information is a demodulation reference signal sequence corresponding to the user equipment, and corresponds to the resource location The number and/or the hybrid automatic repeat request process number is determined.
  • the demodulation reference signal corresponding to the data may implicitly carry the hybrid automatic repeat request process number corresponding to the data.
  • the apparatus 1400 for transmitting feedback information may further include:
  • the information determining unit 1402 may further determine a hybrid automatic repeat request process number corresponding to the data according to the result of the blind detection.
  • different hybrid automatic repeat request processes may use different demodulation reference signals; or the demodulation reference signals of the user equipment are multiplied by different modulation symbols, the different modulation symbols corresponding to different hybrid automatic weights Pass the request process.
  • the device 1400 that sends the feedback information may also include other components or modules.
  • the device 1400 that sends the feedback information may also include other components or modules.
  • the network device explicitly or implicitly transmits the resource location information of the data and/or the hybrid automatic repeat request process number to the user equipment, and the feedback information corresponding to the data; thereby, the transmitted
  • the feedback information in the data and uplink grant signaling can establish a correspondence, and can support multiple HARQ processes in the unscheduled transmission.
  • Embodiments of the present invention provide an apparatus for receiving feedback information, which supports multiple HARQ processes in schedule-free transmission.
  • the device for receiving the feedback information may be, for example, a user equipment, or may be some or some components or components of the user equipment.
  • the same contents of the seventh embodiment and the first to fifth embodiments will not be described again.
  • FIG. 15 is a schematic diagram of an apparatus for receiving feedback information according to an embodiment of the present invention. As shown in FIG. 15, the apparatus 1500 for receiving feedback information includes:
  • a data transmitting unit 1501 which transmits data to the network device by using a schedule-free transmission manner
  • An information receiving unit 1502 which receives resource location information of the data that is explicitly or implicitly transmitted by the network device, and/or a hybrid automatic repeat request process number of the data, and feedback information corresponding to the data .
  • the resource location information may be offset information based on a transmission time interval in which the feedback information is sent.
  • the resource location information is a sequence number of the data in a time-frequency grid based on a transmission time interval in which the feedback information is transmitted; the time-frequency grid includes the user equipment from a time domain. And transmitting the data to a maximum transmission time interval in which the feedback information is received, including a total bandwidth configured for the unscheduled transmission on a frequency domain.
  • the information receiving unit 1502 may explicitly receive the resource location information through a control channel, or may implicitly receive the resource location information by descrambling the control channel.
  • the information receiving unit 1502 may further receive the HARQ process number corresponding to the data.
  • the apparatus 1500 for receiving feedback information may further include: a blind detection unit 1503.
  • the blind detection unit 1503 may perform blind detection on multiple downlink control information formats; wherein, in one downlink control information format, the resource location information and the hybrid automatic repeat request process number are indicated; and another downlink control The hybrid automatic repeat request process number is indicated in the information format.
  • the blind detection unit 1503 may perform blind detection on the control channel by using the identifier information, where the identifier information is a sequence of demodulation reference signals corresponding to the user equipment, and a number corresponding to the resource location and/or The hybrid automatic repeat request process number is determined.
  • the identifier information is a sequence of demodulation reference signals corresponding to the user equipment, and a number corresponding to the resource location and/or The hybrid automatic repeat request process number is determined.
  • the demodulation reference signal corresponding to the data may implicitly carry the hybrid automatic repeat request process number corresponding to the data.
  • different hybrid automatic repeat request processes may use different demodulation reference signals; or the demodulation reference signals of the user equipment are multiplied by different modulation symbols, the different modulation symbols corresponding to different hybrid automatic weights Pass the request process.
  • the apparatus 1500 that receives the feedback information may also include other components or modules. For specific contents of these components or modules, reference may be made to related technologies.
  • the network device explicitly or implicitly transmits the resource location information of the data and/or the hybrid automatic repeat request process number to the user equipment, and the feedback information corresponding to the data; thereby, the transmitted
  • the feedback information in the data and uplink grant signaling can establish a correspondence, and can support multiple HARQ processes in the unscheduled transmission.
  • the embodiment of the present invention further provides a communication system.
  • the communication system 100 can include:
  • the network device 101 is configured with the device 1400 for transmitting feedback information as described in Embodiment 6.
  • User equipment 102 which is configured with means 1500 for receiving feedback information as described in embodiment 7.
  • the embodiment of the present invention further provides a network device, which may be, for example, a base station, but the present invention is not limited thereto, and may be other network devices.
  • a network device which may be, for example, a base station, but the present invention is not limited thereto, and may be other network devices.
  • FIG. 16 is a schematic structural diagram of a network device according to an embodiment of the present invention.
  • network device 1600 can include a processor 1610 (eg, a central processing unit CPU) and a memory 1620; and a memory 1620 coupled to processor 1610.
  • processor 1610 eg, a central processing unit CPU
  • memory 1620 can store various data; in addition, a program for storing information processing 1630, and the program 1630 is executed under the control of the processor 1610.
  • the processor 1610 can be configured to execute the program 1630 to perform control of: receiving data transmitted by the user equipment through the unscheduled transmission; determining resource location information of the data and/or hybrid automatic repeat request of the data. a process number; and explicitly or implicitly transmitting the resource location information and/or the hybrid automatic repeat request process number to the user equipment, and feedback information corresponding to the data.
  • the network device 1600 may further include: a transceiver 1640, an antenna 1650, and the like; wherein the functions of the foregoing components are similar to the prior art, and details are not described herein again. It should be noted that the network device 1600 does not necessarily have to include all of the components shown in FIG. 16; in addition, the network device 1600 may also include components not shown in FIG. 16, and reference may be made to the prior art.
  • the embodiment of the present invention further provides a user equipment, but the present invention is not limited thereto, and may be other devices.
  • FIG. 17 is a schematic diagram of a user equipment according to an embodiment of the present invention.
  • the user equipment 1700 can include a processor 1710 and a memory 1720; the memory 1720 stores data and programs and is coupled to the processor 1710.
  • the figure is exemplary; other types of structures may be used in addition to or in place of the structure to implement telecommunications functions or other functions.
  • the processor 1710 can be configured to perform control of transmitting data to the network device through the unscheduled transmission mode, and receiving resource location information of the data that the network device transmits explicitly or implicitly and/or The hybrid of the data automatically retransmits the request process number and the feedback information corresponding to the data.
  • the user equipment 1700 may further include: a communication module 1730, an input unit 1740, a display 1750, and a power supply 1760.
  • the functions of the above components are similar to those of the prior art, and are not described herein again. It should be noted that the user equipment 1700 does not have to include all the components shown in FIG. 17, and the above components are not required; in addition, the user equipment 1700 may further include components not shown in FIG. There are technologies.
  • the embodiment of the present invention further provides a computer readable program, wherein the program causes the network device to perform the method of transmitting feedback information according to Embodiments 1 to 5 when the program is executed in a network device.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the network device to perform the method of transmitting feedback information described in Embodiments 1 to 5.
  • the embodiment of the present invention further provides a computer readable program, wherein the program causes the user equipment to perform the method of receiving feedback information according to Embodiments 1 to 5 when the program is executed in a user equipment.
  • An embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer is The reading program causes the user equipment to perform the method of receiving the feedback information described in Embodiments 1 to 5.
  • the above apparatus and method of the present invention may be implemented by hardware or by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.
  • the method/apparatus described in connection with the embodiments of the invention may be embodied directly in hardware, a software module executed by a processor, or a combination of both.
  • one or more of the functional block diagrams shown in FIG. 14 and/or one or more combinations of functional block diagrams may correspond to various software of a computer program flow.
  • Modules can also correspond to individual hardware modules.
  • These software modules may correspond to the respective steps shown in FIG. 3, respectively.
  • These hardware modules can be implemented, for example, by curing these software modules using a Field Programmable Gate Array (FPGA).
  • FPGA Field Programmable Gate Array
  • the software module can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.
  • a storage medium can be coupled to the processor to enable the processor to read information from, and write information to, the storage medium; or the storage medium can be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC.
  • the software module can be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal.
  • the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.
  • One or more of the functional blocks described in the figures and/or one or more combinations of functional blocks may be implemented as a general purpose processor, digital signal processor (DSP) for performing the functions described herein.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • One or more of the functional blocks described with respect to the figures and/or one or more combinations of functional blocks may also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple microprocessors One or more microprocessors in conjunction with DSP communication or any other such configuration.

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Abstract

一种反馈信息的发送和接收方法、装置以及通信***。所述方法包括：接收用户设备通过免调度传输方式发送的数据；确定所述数据的资源位置信息和/或所述数据的混合自动重传请求进程编号；以及显式地或隐式地向所述用户设备发送所述资源位置信息和/或所述混合自动重传请求进程编号，以及所述数据对应的反馈信息。由此，所传输的数据和上行授权信令中的反馈信息能够建立起对应关系，能够在免调度传输中支持多个HARQ进程。

Description

反馈信息的发送和接收方法、装置以及通信*** 技术领域
本发明实施例涉及通信技术领域，特别涉及一种反馈信息的发送和接收方法、装置以及通信***。
背景技术
在长期演进(LTE，Long Term Evolution)***中，用户设备在子帧n发起物理上行共享信道(PUSCH，Physical Uplink Shared Channel)传输后，会在子帧n+4等待网络设备(例如基站)反馈的ACK/NACK信息。如果接收到NACK，用户设备会在子帧n+8发起重传。
该ACK/NACK信息可以通过物理混合自动重传请求指示信道(PHICH，Physical Hybrid automation repeat request Indicator Channel)传输，也可以通过物理下行控制信道(PDCCH，Physical Downlink Control Channel)传输，更准确地说，可以通过PDCCH format 0或者称为上行授权(UL grant)的信息进行指示。
例如，UL grant中的新数据指示(NDI，New Data Indicator)字段如果发生变化，表示调度一个新的传输块(TB，Transmission Block)(相当于ACK)，如果NDI字段不变，表示调度重传(相当于NACK)。用户设备不必等到接收完前一个TB的ACK/NACK反馈后再进行新的TB传输，而是可以发起最多8个并行的数据传输，即LTE最多可以支持8个混合自动重传请求(HARQ)进程。
在LTE***中，由于基站在使用UL grant调度重传时，始终与前次传输保持固定的时序关系，用户设备根据时序关系就可以知道需要重传哪一个HARQ进程中的TB，相应地，基站也会对属于同一个HARQ进程中的初传和重传进行软合并。由于UL grant与前次传输有固定的时序，上行多个HARQ进程在LTE中可以得到很好的支持。
应该注意，上面对技术背景的介绍只是为了方便对本发明的技术方案进行清楚、完整的说明，并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本发明的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。
发明内容
但是，发明人发现：在第五代(5G)通信***中，针对URLLC以及mMTC等业务，引入了上行免调度(grant-free)传输。与LTE中的grant-based传输相比，grant-free传输在用户设备有数据到来时，不需要向基站发起资源请求，也不需要接收基站的调度信令，而是立即发起数据传输。grant-free传输可以减少空口时延和节省信令开销。同时5G***也力图支持更加灵活的HARQ过程，意味着UL grant不必与前次传输保持固定的时序关系。因此在grant-free传输中，需要新的方法来支持多HARQ进程。
本发明实施例提供一种反馈信息的发送和接收方法、装置以及通信***。网络设备显式地或隐式地向用户设备发送数据的资源位置信息和/或混合自动重传请求进程编号，以及所述数据对应的反馈信息；由此，所传输的数据和上行授权信令中的反馈信息能够建立起对应关系，能够在免调度传输中支持多个HARQ进程。
根据本发明实施例的第一个方面，提供一种反馈信息的发送方法，支持免调度传输中的多个混合自动重传请求进程，所述方法包括：
接收用户设备通过免调度传输方式发送的数据；
确定所述数据的资源位置信息和/或所述数据的混合自动重传请求进程编号；以及
显式地或隐式地向所述用户设备发送所述资源位置信息和/或所述混合自动重传请求进程编号，以及所述数据对应的反馈信息。
根据本发明实施例的第二个方面，提供一种反馈信息的发送装置，支持免调度传输中的多个混合自动重传请求进程，所述装置包括：
数据接收单元，其接收用户设备通过免调度传输方式发送的数据；
信息确定单元，其确定所述数据的资源位置信息和/或所述数据的混合自动重传请求进程编号；以及
信息发送单元，其显式地或隐式地向所述用户设备发送所述资源位置信息和/或所述混合自动重传请求进程编号，以及所述数据对应的反馈信息。
根据本发明实施例的第三个方面，提供一种反馈信息的接收方法，支持免调度传输中的多个混合自动重传请求进程，所述方法包括：
通过免调度传输方式向网络设备发送数据；以及
接收所述网络设备显式地或隐式地发送的所述数据的资源位置信息和/或所述数据的混合自动重传请求进程编号，以及所述数据对应的反馈信息。
根据本发明实施例的第四个方面，提供一种反馈信息的接收装置，支持免调度传输中的多个混合自动重传请求进程，所述装置包括：
数据发送单元，其通过免调度传输方式向网络设备发送数据；以及
信息接收单元，其接收所述网络设备显式地或隐式地发送的所述数据的资源位置信息和/或所述数据的混合自动重传请求进程编号，以及所述数据对应的反馈信息。
根据本发明实施例的第五个方面，提供一种通信***，包括：
网络设备，其包括如第二方面所述的反馈信息的发送装置；
用户设备，其包括如第四方面所述的反馈信息的接收装置。
本发明实施例的有益效果在于：网络设备显式地或隐式地向用户设备发送数据的资源位置信息和/或混合自动重传请求进程编号，以及所述数据对应的反馈信息；由此，所传输的数据和上行授权信令中的反馈信息能够建立起对应关系，能够在免调度传输中支持多个HARQ进程。
参照后文的说明和附图，详细公开了本发明的特定实施方式，指明了本发明的原理可以被采用的方式。应该理解，本发明的实施方式在范围上并不因而受到限制。在所附权利要求的精神和条款的范围内，本发明的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和/或示出的特征可以以相同或类似的方式在一个或更多个其它实施方式中使用，与其它实施方式中的特征相组合，或替代其它实施方式中的特征。
应该强调，术语“包括/包含”在本文使用时指特征、整件、步骤或组件的存在，但并不排除一个或更多个其它特征、整件、步骤或组件的存在或附加。
附图说明
在本发明实施例的一个附图或一种实施方式中描述的元素和特征可以与一个或更多个其它附图或实施方式中示出的元素和特征相结合。此外，在附图中，类似的标号表示几个附图中对应的部件，并可用于指示多于一种实施方式中使用的对应部件。
图1是本发明实施例的通信***的一示意图；
图2是免调度传输时所传输的数据和上行授权信令中的反馈信息不能够对应的一示例图；
图3是本发明实施例的发送反馈信息的方法的一示意图；
图4是本发明实施例的接收反馈信息的方法的一示意图；
图5是本发明实施例的发送和接收反馈信息的方法的一示意图；
图6是本发明实施例的资源位置信息的一示例图；
图7是本发明实施例的资源位置信息的另一示例图；
图8是本发明实施例的数据被重复传输的一示例图；
图9是本发明实施例的使用HARQ进程编号进行数据传输的一示例图；
图10是本发明实施例的定义免调度传输ID的一示例图；
图11是本发明实施例的使用不同调制符号隐式地传输HARQ进程编号的一示例图；
图12是本发明实施例的盲检调制符号的一示例图；
图13是本发明实施例的数据被重复传输的一示例图；
图14是本发明实施例的发送反馈信息的装置的一示意图；
图15是本发明实施例的接收反馈信息的装置的一示意图；
图16是本发明实施例的网络设备的一示意图；
图17是本发明实施例的用户设备的一示意图。
具体实施方式
参照附图，通过下面的说明书，本发明的前述以及其它特征将变得明显。在说明书和附图中，具体公开了本发明的特定实施方式，其表明了其中可以采用本发明的原则的部分实施方式，应了解的是，本发明不限于所描述的实施方式，相反，本发明包括落入所附权利要求的范围内的全部修改、变型以及等同物。
在本发明实施例中，术语“第一”、“第二”等用于对不同元素从称谓上进行区分，但并不表示这些元素的空间排列或时间顺序等，这些元素不应被这些术语所限制。术语“和/或”包括相关联列出的术语的一种或多个中的任何一个和所有组合。术语“包含”、“包括”、“具有”等是指所陈述的特征、元素、元件或组件的存在，但并不排除存在或添加一个或多个其他特征、元素、元件或组件。
在本发明实施例中，单数形式“一”、“该”等包括复数形式，应广义地理解为“一种”或“一类”而并不是限定为“一个”的含义；此外术语“所述”应理解为既包括单数形式也包括复数形式，除非上下文另外明确指出。此外术语“根据”应理解 为“至少部分根据……”，术语“基于”应理解为“至少部分基于……”，除非上下文另外明确指出。
在本发明实施例中，术语“通信网络”或“无线通信网络”可以指符合如下任意通信标准的网络，例如长期演进(LTE，Long Term Evolution)、增强的长期演进(LTE-A，LTE-Advanced)、宽带码分多址接入(WCDMA，Wideband Code Division Multiple Access)、高速报文接入(HSPA，High-Speed Packet Access)等等。
并且，通信***中设备之间的通信可以根据任意阶段的通信协议进行，例如可以包括但不限于如下通信协议：1G(generation)、2G、2.5G、2.75G、3G、4G、4.5G以及未来的5G、新无线(NR，New Radio)等等，和/或其他目前已知或未来将被开发的通信协议。
在本发明实施例中，术语“网络设备”例如是指通信***中将终端设备接入通信网络并为该终端设备提供服务的设备。网络设备可以包括但不限于如下设备：基站(BS，Base Station)、接入点(AP、Access Point)、发送接收点(TRP，Transmission Reception Point)、广播发射机、移动管理实体(MME、Mobile Management Entity)、网关、服务器、无线网络控制器(RNC，Radio Network Controller)、基站控制器(BSC，Base Station Controller)等等。
其中，基站可以包括但不限于：节点B(NodeB或NB)、演进节点B(eNodeB或eNB)以及5G基站(gNB)，等等，此外还可包括远端无线头(RRH，Remote Radio Head)、远端无线单元(RRU，Remote Radio Unit)、中继(relay)或者低功率节点(例如femto、pico等等)。并且术语“基站”可以包括它们的一些或所有功能，每个基站可以对特定的地理区域提供通信覆盖。术语“小区”可以指的是基站和/或其覆盖区域，这取决于使用该术语的上下文。
在本发明实施例中，术语“用户设备”(UE，User Equipment)或者“终端设备”(TE，Terminal Equipment)例如是指通过网络设备接入通信网络并接收网络服务的设备。用户设备可以是固定的或移动的，并且也可以称为移动台(MS，Mobile Station)、终端、用户台(SS，Subscriber Station)、接入终端(AT，Access Terminal)、站，等等。
其中，用户设备可以包括但不限于如下设备：蜂窝电话(Cellular Phone)、个人数字助理(PDA，Personal Digital Assistant)、无线调制解调器、无线通信设备、手持 设备、机器型通信设备、膝上型计算机、无绳电话、智能手机、智能手表、数字相机，等等。
再例如，在物联网(IoT，Internet of Things)等场景下，用户设备还可以是进行监控或测量的机器或装置，例如可以包括但不限于：机器类通信(MTC，Machine Type Communication)终端、车载通信终端、设备到设备(D2D，Device to Device)终端、机器到机器(M2M，Machine to Machine)终端，等等。
以下通过示例对本发明实施例的场景进行说明，但本发明不限于此。
图1是本发明实施例的通信***的一示意图，示意性说明了以用户设备和网络设备为例的情况，如图1所示，通信***100可以包括网络设备101和用户设备102(为简单起见，图1仅以一个用户设备和一个网络设备为例进行说明，但本发明不限于此)。
在本发明实施例中，网络设备101和用户设备102之间可以进行现有的业务或者未来可实施的业务。例如，这些业务可以包括但不限于：增强的移动宽带(eMBB，enhanced Mobile Broadband)、大规模机器类型通信(mMTC，massive Machine Type Communication)和高可靠低时延通信(URLLC，Ultra-Reliable and Low-Latency Communication)，等等。
图2是免调度传输时所传输的数据和上行授权信令中的反馈信息不能够对应的一示例图。如图2所示，用户设备选择一个资源块(RB，Resource Block)传输TB1，即开启了一个HARQ进程。在支持多个HARQ进程条件下，用户设备在接收到针对TB1的上行授权UL grant之前，可以发起新的HARQ进程。图2中上行授权UL grant用于调度某一TB的重传或调度新数据传输。在接收到上行授权之前，用户设备又有新数据到达，因此发起新的数据传输，即发送TB2，TB2属于一个新的HARQ进程。
但是，问题出现在用户设备对上行授权的接收。当用户设备接收到上行授权后，由于上行授权与前次数据传输没有固定的时序关系，用户设备将无法获知上行授权针对的是TB1还是TB2。当网络设备漏检了某个TB时，也会产生类似歧义。因此，当上行授权中的NDI变化时，用户设备无法知晓哪个TB得到了正确传输，当NDI字段不变时，用户设备也无法知晓该重传哪个TB。
以下将以gNB和UE为例，对本发明实施例进行详细说明。
此外，本发明实施例中的物理下行控制信道、物理下行共享信道、物理上行共享 信道等应该广泛地理解为发送端和接收端之间的信道，但并不限于LTE***中定义的PDCCH、PHICH、PDSCH或PUCCH，例如也可以是增强的e-PDCCH、e-PHICH、e-PUSCH或e-PUCCH；或者还可以是D2D场景下的边链路控制信道或边链路数据信道。
实施例1
本发明实施例提供一种反馈信息的发送和接收方法，支持免调度传输中的多个HARQ进程。图3是本发明实施例的反馈信息的发送方法的一示意图，从网络设备侧进行说明。如图3所示，所述方法包括：
步骤301，网络设备接收用户设备通过免调度传输方式发送的数据；
步骤302，网络设备确定所述数据的资源位置信息和/或所述数据的混合自动重传请求进程编号；以及
步骤303，网络设备显式地或隐式地向所述用户设备发送所述资源位置信息和/或所述混合自动重传请求进程编号，以及所述数据对应的反馈信息。
在本实施例中，所述资源位置信息可以是以发送所述反馈信息的传输时间间隔(TTI，Transmission Time Interval)为基准的偏移信息。传输时间间隔(TTI)可以包括如下的任意一种：时隙(slot)、子帧(subframe)、帧(frame)、比时隙更短的时间单元即小时隙(mini-slot)；但本发明不限于此，还可以是其他的时间单元。
以下将以时隙为例，对本发明进行说明。
图4是本发明实施例的反馈信息的接收方法的一示意图，从用户设备侧进行说明。如图4所示，所述方法包括：
步骤401，用户设备通过免调度传输方式向网络设备发送数据；以及
步骤402，用户设备接收所述网络设备显式地或隐式地发送的所述数据的资源位置信息和/或所述数据的混合自动重传请求进程编号，以及所述数据对应的反馈信息。
例如，所述资源位置信息为所述数据在一以发送所述反馈信息的传输时间间隔为基准的时频栅格中的序号；所述时频栅格在时域上包括所述用户设备从发送所述数据到接收到所述反馈信息的多个传输时间间隔(例如最大范围的TTI)，在频域上包括为所述免调度传输所配置的总带宽。
关于本发明的资源位置信息，具体可以参考后面实施例2的内容。值得注意的是， 实施例2仅对本发明实施例的资源位置信息进行了示意性说明，但本发明不限于此，例如还可以采用其他的形式。
图5是本发明实施例的反馈信息的发送和接收方法的一示意图，从网络设备和用户设备两侧进行进一步说明。如图5所示，所述方法包括：
步骤501，用户设备通过免调度传输方式向网络设备发送数据；
步骤502，网络设备确定所述数据的资源位置信息和/或所述数据的混合自动重传请求进程编号；
在一个实施方式中，网络设备可以根据接收所述数据的时间和频率，确定所述数据的资源位置信息，具体可以参考后述的实施例2。在另一个实施方式中，所述数据所对应的解调参考信号(DMRS，Demodulation Reference Signal)可以隐式地携带有所述数据对应的HARQ进程编号，由此网络设备可以通过盲检确定所述数据的HARQ进程编号，具体可以参考后述的实施例4。
步骤503，网络设备确定所述数据对应的反馈信息；例如NACK或ACK，但本发明不限于此。
步骤504，网络设备显式地或隐式地向所述用户设备发送所述资源位置信息和/或所述混合自动重传请求进程编号，以及所述数据对应的反馈信息。
在一个实施方式中，网络设备可以通过控制信道(例如PDCCH、PHICH等，但本发明不限于此)显式地发送所述资源位置信息以及所述反馈信息；具体可以参考后述的实施例2。在另一个实施方式中，网络设备可以通过控制信道显式地发送所述反馈信息，并通过对所述控制信道的循环冗余校验(CRC，Cyclic Redundancy Check)码进行加扰，隐式地发送所述资源位置信息；具体可以参考后述的实施例3。在另一个实施方式中，网络设备可以通过控制信道显式地发送所述HARQ进程编号以及所述反馈信息；具体可以参考后述的实施例4。但本发明不限于此，还可以根据实际情况确定具体的实施方式。
值得注意的是，以上图3至5仅对本发明实施例进行了示意性说明，但本发明不限于此。例如可以适当地调整各个步骤之间的执行顺序，此外还可以增加其他的一些步骤或者减少其中的某些步骤。本领域的技术人员可以根据上述内容进行适当地变型，而不仅限于上述附图3至5的记载。
由上述实施例可知，网络设备显式地或隐式地向用户设备发送数据的资源位置信 息和/或混合自动重传请求进程编号，以及所述数据对应的反馈信息；由此，所传输的数据和上行授权信令中的反馈信息能够建立起对应关系，能够在免调度传输中支持多个HARQ进程。
实施例2
本实施例在实施例1的基础上，对显式地发送数据的资源位置信息进行说明。
在本实施例中，从用户设备发起上行数据传输的时刻，到该用户设备接收到所对应的上行授权信令(通知该数据传输成功或重传该数据，相当于指示该数据的ACK/NACK)的时刻，二者之间将存在一个最大的时间间隔，即最坏情况下相隔多久接收到上行授权。
例如，以该最大的时间间隔作为横轴，以所配置的免调度传输资源总带宽作为纵轴，在二者围成的矩阵窗内可以划分栅格，划分方式为在时间方向上以TTI为粒度，在频率方向上以每一次免调度传输所实际占用的带宽为粒度，因此一个栅格刚好对应一次免调度传输所占用的全部时频资源。
图6是本发明实施例的资源位置信息的一示例图，如图6所示，例如网络设备配置用户设备可以在4个RB范围内进行免调度传输，用户设备每次选择一个RB进行传输，调度单位为时隙slot。
假设从用户设备发起TB传输开始，到接收到相应上行调度为止，最多可以经历4个时隙，那么矩形窗尺寸为时域上4个时隙，频域上4个RB，每个栅格对应一个RB和一个时隙，是每次TB传输所占用的时频资源。可以对矩形窗内的栅格编号，使得每个栅格具有唯一编号。
例如，在矩形窗内部，编号可以按照先频率递增-后时间递减的顺序进行。更具体地，从矩形窗内最新的时隙开始，先沿频率递增方向编号，到达最高频率后，再沿时间轴相反方向，移动到前一时隙，然后继续沿频率递增方向编号。当网络设备发送或用户设备接收到上行授权时，该矩形窗滑动至与上行授权的前一时隙对齐的位置。
如图6所示，所传输的TB将对应矩阵窗内的一个栅格编号，网络设备可以将该编号通过上行授权信令发送给用户设备，用户设备便可以获知该上行授权针对的是哪一个TB。滑动窗对于网络设备和用户设备均可见，因此双方能够通过栅格编号定位到相同的资源和TB。
如图6所示，如果第一个上行授权针对TB1，网络设备可以在上行授权中指示编号15，用户设备接收到该上行授权，就可以获知其应该与TB1关联。如果第一个上行授权针对TB2，则网络设备反馈编号7。在第二个上行授权发送和接收时刻，矩形窗滑动至第二个上行授权的前一时隙，TB2对应栅格编号11。TB1到第二个上行授权的时间间隔超出了上行授权的最大时间间隔，TB1不落入矩形窗内，该上行授权不可能针对TB1。
图7是本发明实施例的资源位置信息的另一示例图，如图7所示，假设用户设备在时隙n发送TB，如果能够支持基站在时隙n便通过上行授权返回对应所述TB的新传/重传调度信令(ACK/NACK)，那么矩阵窗大小应该增加1个时隙长度，并且应滑动至与上行授权所在的时隙对齐。
在本实施例中，可以通过控制信道显式地将所述资源位置信息发送给所述用户设备。假设矩形窗包含M个栅格，可以在上行授权信令中使用
Figure PCTCN2017083296-appb-000001
比特定位某一特定栅格。上行授权中的NDI字段可以用来指示ACK/NACK。当NDI变化时，表示反馈的是ACK信息，并可以同时调度新数据传输，此时相当于将用户设备从免调度传输模式切换到了基于调度的传输模式。当NDI不变时，表示反馈的是NACK信息，同时可以调度用户设备重传译码失败的TB，此时相当于用户设备的初传是免调度传输，重传是基于调度的传输。
在本实施例中，在所述数据被多次重复传输的情况下，可以将所述多次重复传输中所述数据的一个或多个资源位置发送给所述用户设备。例如在用户设备对某一TB进行传输时，可以执行重复传输以提高正确译码概率。
图8是本发明实施例的数据被重复传输的一示例图，如图8所示，每个TB均进行了4次重复传输。上述对资源位置的指示仍然可以使用。在上行授权信令中可以指示多次重复传输中任意一次传输所发生的资源位置。例如，如图8所示，上行授权均指示重复传输所占用的最小的栅格编号。
值得注意的是，矩形窗内的栅格总数可以不等于HARQ进程数。用户设备可以自行维护栅格编号与HARQ进程编号的对应关系。假设每个HARQ进程对应一块缓存buffer，用户设备接收到的每个栅格编号将对应一个HARQ进程的缓存。可以预定义HARQ缓存的使用规则，例如用户设备按照HARQ进程编号递增顺序循环使用HARQ进程的缓存，当遇到某个HARQ进程的缓存已被占用时，可以跳过该缓存， 使用下一个可用的HARQ进程缓存。这样，网络设备可以仅在上行授权中通知对应TB的资源位置，HARQ进程编号及缓存使用可以由用户设备自行维护。
在本实施例中，网络设备还可以将所述数据对应的HARQ进程编号发送给所述用户设备。例如，在上行授权中把资源位置和HARQ进程编号都通知给用户设备。为便于后面说明，可以将这种格式的上行授权定义为下行控制信息(DCI，Downlink Control Information)format 0A。
例如，可以在上行授权中始终包含资源位置和HARQ进程编号两个字段，即网络设备始终使用DCI format 0A进行ACK/NACK反馈，用户设备将始终盲检DCI format 0A，将其作为对新传/重传的调度。
再例如，对于所述数据的初传，所述资源位置信息和所述混合自动重传请求进程编号被指示；对于所述数据的后续重传，所述混合自动重传请求进程编号被指示。即，可以仅针对第一次免调度传输的TB反馈DCI format 0A，这相当于为该TB分配了HARQ进程编号，因此后面对于该TB的重传调度，网络设备可以使用仅包含HARQ进程编号的上行授权，将其表示为DCI format 0，比DCI format 0A少了HARQ进程编号字段，因此可以节省信令开销。在用户设备侧，用户设备仅在以免调度传输方式传输了某一TB后才对DCI format 0A进行盲检，同时用户设备始终盲检DCI format 0，从而能够及时获知是否被切换到基于调度传输模式，或者被调度重传某一TB。
图9是本发明实施例的使用HARQ进程编号进行数据传输的一示例图。如图9所示，用户设备接收到上行授权，被调度重传TB1，之后，用户设备将盲检DCI format0，因为TB1的后续调度会以DCI format 0形式传输；当有新数据到达时，用户设备以免调度传输方式发起TB2传输，之后用户设备将盲检DCI format 0A和DCI format0，因为TB2的后续调度以DCI format 0A形式传输，TB1的后续调度以DCI format 0形式传输。
在某些情况下，例如同一用户设备不能在同一时刻传输多于一个TB，时频二维的矩形窗将退化为仅包含时间维度的一维矩形窗，TB所在的资源位置可以仅通过指示相对于上行授权时刻的时间偏移(如时隙偏移)即可。
实施例3
本发明实施例在实施例1和2的基础上，对隐式地发送数据的资源位置信息进行 说明。其中，与实施例1或2相同的内容，例如资源位置信息的定义等内容不再赘述。
在本实施例中，网络设备可以通过对控制信道加扰而隐式地将所述资源位置信息发送给所述用户设备。例如，网络设备可以使用标识信息对所述控制信道的CRC进行加扰；其中，所述标识信息可以由所述用户设备对应的DMRS序列和所述资源位置对应的编号确定。
例如，在免调度传输中，通常会事先为不同用户设备配置不同的DM-RS序列，在用户设备发起数据传输时，也会同时传输DM-RS。网络设备通过检测DM-RS序列的存在性，可以判断用户设备当前是否正进行数据传输，即检测用户活动性。
例如，假设DM-RS序列与用户设备之间满足一一映射关系，这是出于支持URLLC用户设备的考虑，由于URLLC用户设备对时延要求敏感，不希望不同用户设备使用相同的DM-RS传输，否则网络设备将无法分辨用户设备，并且此时的信道估计误差很有可能导致解调失败。
在本实施例中，假设DM-RS序列总数为N，则在免调度传输的资源内，最多可以支持N个用户设备。对N个DM-RS序列进行编号，实际上DM-RS ID已经与用户ID一一对应。重用实施例2中使用矩形窗和栅格编号定位某一TB所在资源的假设，假设矩形窗包含M个资源栅格(即编号1到M)，对应M个TB可能出现的资源位置。可以利用N个DM-RS序列及M个资源位置编号，构造出互不相同的MN个编号，例如可以定义为免调度传输ID。
图10是本发明实施例的定义免调度传输ID的一示例图，如图10所示，每M个连续编号对应同一个DM-RS序列，编号0到M-1对应DM-RS序列0，编号M到2M-1对应DM-RS序列1，以此类推。
在本实施例中，可以将当数据到达后可以直接发起数据传输的用户设备定义为免调度传输的用户设备。可以将数据到达后，需要发送资源请求并等待网络设备调度数据传输的用户设备称为基于调度传输的用户设备。可以为免调度传输的用户设备配置独立的控制资源区域，称为免调度控制资源区域，所有免调度传输的用户设备均在该免调度控制资源区域内盲检PDCCH。可以为基于调度传输的用户设备独立配置另外的控制资源区域，称为基于调度的控制资源区域，所有基于调度传输的用户设备均在基于调度的控制资源区域盲检PDCCH。二个区域在时间和频率上占据互不重合的物理资源。
在本实施例中，在免调度控制资源区域内传输的PDCCH，其CRC可以使用前面定义的免调度传输ID进行加扰。在基于调度的控制资源区域传输的PDCCH，其CRC使用UE ID(如C-RNTI等)进行加扰。对于免调度传输的用户设备，用户设备需要盲检PDCCH(包括上行授权)。
值得注意的是，用户设备在判断PDCCH CRC是否正确时，需要进行M次CRC解扰尝试。以配置的DM-RS序列为n的免调度用户设备为例，用户设备将尝试使用编号i∈[(n-1)M,nM-1]共M个免调度传输ID对CRC进行解扰，一旦某个ID号i使得CRC校验正确，则用户设备可以得知该PDCCH是发送给自己的信令，并且可以获知进行新传/重传调度的上行授权对应的物理资源位置编号为i-nM。
同实施例2类似，由于资源位置已经通过对CRC加扰而隐式地通知给用户设备，HARQ进程编号可以不在上行授权信令中出现，HARQ进程编号可以仅由用户设备维护；另外，也可以在上行授权信令中使用HARQ process number字段，显式地指示HARQ进程编号。
同实施例2类似，当对某一TB的发送使用重复传输时，可以使用多次重复传输中任意一次传输所发生的资源位置，来对免调度传输控制资源区域内的PDCCH CRC进行加扰。
实施例4
本实施例在实施例1的基础上，对隐式地携带数据的HARQ进程编号进行说明。
在本实施例中，所述数据所对应的DMRS可以隐式地携带有所述数据对应的HARQ进程编号。
例如，不同的HARQ进程使用不同的DMRS。即，可以为用户设备不同的HARQ进程配置使用不同的DM-RS序列，二者存在一一对应关系。这样网络设备(例如基站)通过盲检DM-RS序列，就可以得知当前的HARQ进程编号，网络设备可以在反馈的上行授权信令中显式地指示该HARQ进程编号，从而使用户设备可以知晓当前的上行授权对应的是哪一个HARQ进程，或者说对应哪一个TB。
这种方法能够建立起上行授权与HARQ进程之间的关联，但存在的一个问题是很容易消耗掉DM-RS序列资源。彼此正交的DM-RS序列总数有限，DM-RS资源对于免调度传输十分重要。如实施例3所述，正交的DM-RS序列可以用于支持并发的 免调度传输的用户设备，如果为同一用户设备的多个HARQ进程分配多个正交的DM-RS序列，那么相应地会减少可以容纳的并发用户设备数目。
在本实施例中，可以仍然为每个用户设备配置单个DM-RS序列，为区分属于同一用户设备的不同HARQ进程，令DM-RS序列与不同的调制符号相乘，从而形成多个不同的新的DM-RS序列，每个与DM-RS序列相乘的调制符号对应一个HARQ进程。由于DM-RS序列同乘一个符号，不同用户间的DM-RS序列的正交性不会受到影响。
图11是本发明实施例的使用不同调制符号隐式地传输HARQ进程编号的一示例图。如图11所示，假设用户设备拥有4个HARQ进程，可以使用来自QPSK星座的4个调制符号，每个调制符号关联一个HARQ进程，当某一个HARQ进程得到传输时，与之相关联的调制符号被乘到DM-RS序列上发送。
在本实施例中，网络设备(例如基站)可以通过盲检来识别哪些DM-RS得到传输，并且需要判断该DM-RS序列携带的是哪一个调制符号，从而能够根据调制符号与HARQ进程之间的对应关系确定HARQ编号，并将其通过上行授权信令反馈给用户设备。
例如，基站可以首先检测哪些DM-RS序列存在，这一步骤与实施例3中基站盲检用户活动性相同。不同之处在于基站接下来还需要对DM-RS序列携带的调制符号进行检测。
图12是本发明实施例的盲检调制符号的一示例图。如图12所示，网络设备(例如基站)可以针对每种可能的调制符号进行信道估计、译码并恢复数据；根据恢复数据与实际接收数据的匹配程度，基站可以判断DM-RS序列携带了哪个调制符号。实际上这里TB与HARQ进程的关联由用户设备指定，用户设备选择某一调制符号，也就是为该TB指定了一个HARQ进程。用户设备接收到来自基站的上行授权后，即获知HARQ进程编号，通过该编号，用户设备即可定位到某一特定TB。
实施例4的方法同样适用于TB重复传输场景，实际上实施例4也解决了基站在对重复传输进行合并时的模糊问题。
图13是本发明实施例的数据被重复传输的一示例图，如图13所示，用户设备对每根TB执行4次重复传输。用户设备在时隙n传输TB1和TB2，在时隙n+1传输TB1、TB2和一个新的数据TB3。
假设每次重复传输时用户设备均随机选择时频资源，那么在时隙n+1，基站能够检测到3个TB；但是通常情况下，基站不知道3个TB中哪一个与前面的TB1或TB2属于同一个HARQ进程，因而无法进行正确的软合并。通过使用实施例4的方法，基站可以通过检测DM-RS携带的调制符号识别出各个HARQ进程，从而可以将属于同一个HARQ进程的TB进行合并。
实施例5
在实施例4中，网络设备(例如基站)通过盲检能够获知当前解调的TB所属的HARQ进程，并将该HARQ进程编号携带在上行授权信令中传递给用户设备。实际上，也可以重用实施例3的方法将HARQ进程编号隐式地通知给用户设备。
例如，需要改动的仅仅是将实施例3中的M个资源位置编号替换成这里的Q个HARQ进程编号。更具体地，利用N个DM-RS序列及Q个HARQ进程编号，构造出互不相同的QN个编号，定义为免调度传输ID。每Q个连续编号对应同一个DM-RS序列，即对应同一个用户设备，编号0到Q-1对应DM-RS序列0，编号Q到2Q-1对应DM-RS序列1，以此类推。方法的其他部分与实施例3相同。
例如，网络设备可以使用标识信息对所述控制信道的CRC进行加扰。其中，所述标识信息可以由所述用户设备对应的解调参考信号序列以及所述资源位置对应的编号确定；或者，所述标识信息可以由所述用户设备对应的解调参考信号序列和所述混合自动重传请求进程编号确定；或者，所述标识信息可以由所述用户设备对应的解调参考信号序列、所述资源位置对应的编号和所述混合自动重传请求进程编号确定。但本发明不限于此。
实施例6
本发明实施例提供一种发送反馈信息的装置，支持免调度传输中的多个HARQ进程。该发送反馈信息的装置例如可以是网络设备，也可以是配置于网络设备的某个或某些部件或者组件。本实施例6与实施例1至5相同的内容不再赘述。
图14是本发明实施例的发送反馈信息的装置的一示意图，如图14所示，发送反馈信息的装置1400包括：
数据接收单元1401，其接收用户设备通过免调度传输方式发送的数据；
信息确定单元1402，其确定所述数据的资源位置信息和/或所述数据的混合自动重传请求进程编号；以及
信息发送单元1403，其显式地或隐式地向所述用户设备发送所述资源位置信息和/或所述混合自动重传请求进程编号，以及所述数据对应的反馈信息。
在本实施例中，所述资源位置信息可以是以发送所述反馈信息的传输时间间隔为基准的偏移信息。例如，所述资源位置信息为所述数据在一以发送所述反馈信息的传输时间间隔为基准的时频栅格中的序号；所述时频栅格在时域上包括所述用户设备从发送所述数据到接收到所述反馈信息的最大传输时间间隔，在频域上包括为所述免调度传输所配置的总带宽。
在本实施例中，信息发送单元1403还可以将所述数据对应的混合自动重传请求进程编号发送给所述用户设备。例如，所述资源位置信息和所述混合自动重传请求进程编号可以在初传和重传中始终被指示。再例如，对于所述数据的初传，所述资源位置信息和所述混合自动重传请求进程编号被指示；对于所述数据的后续重传，所述混合自动重传请求进程编号被指示。
在本实施例中，在所述数据被多次重复传输的情况下，可以将所述多次重复传输中所述数据的一个或多个资源位置发送给所述用户设备。
在一个实施方式中，信息发送单元1403可以通过控制信道显式地将所述资源位置信息发送给所述用户设备；在另一个实施方式中，信息发送单元1403可以通过对控制信道加扰而隐式地将所述资源位置信息发送给所述用户设备。
如图14所示，发送反馈信息的装置1400还可以包括：
加扰单元1404，其使用标识信息对所述控制信道的循环冗余校验码进行加扰；其中，所述标识信息由所述用户设备对应的解调参考信号序列，和所述资源位置对应的编号和/或所述混合自动重传请求进程编号确定。
在另一个实施方式中，所述数据所对应的解调参考信号可以隐式地携带有所述数据对应的混合自动重传请求进程编号。如图14所示，发送反馈信息的装置1400还可以包括：
盲检单元1405，其对所述用户设备发送的所述解调参考信号进行盲检；
信息确定单元1402还可以根据所述盲检的结果确定所述数据对应的混合自动重传请求进程编号。
例如，不同的混合自动重传请求进程可以使用不同的解调参考信号；或者所述用户设备的解调参考信号被不同的调制符号相乘，所述不同的调制符号对应于不同的混合自动重传请求进程。
值得注意的是，以上仅对与本发明相关的各部件或模块进行了说明，但本发明不限于此。发送反馈信息的装置1400还可以包括其他部件或者模块，关于这些部件或者模块的具体内容，可以参考相关技术。
由上述实施例可知，网络设备显式地或隐式地向用户设备发送数据的资源位置信息和/或混合自动重传请求进程编号，以及所述数据对应的反馈信息；由此，所传输的数据和上行授权信令中的反馈信息能够建立起对应关系，能够在免调度传输中支持多个HARQ进程。
实施例7
本发明实施例提供一种接收反馈信息的装置，支持免调度传输中的多个HARQ进程。该接收反馈信息的装置例如可以是用户设备，也可以是配置于用户设备的某个或某些部件或者组件。本实施例7与实施例1至5相同的内容不再赘述。
图15是本发明实施例的接收反馈信息的装置的一示意图，如图15所示，接收反馈信息的装置1500包括：
数据发送单元1501，其通过免调度传输方式向网络设备发送数据；以及
信息接收单元1502，其接收所述网络设备显式地或隐式地发送的所述数据的资源位置信息和/或所述数据的混合自动重传请求进程编号，以及所述数据对应的反馈信息。
在本实施例中，所述资源位置信息可以是以发送所述反馈信息的传输时间间隔为基准的偏移信息。例如，所述资源位置信息为所述数据在一以发送所述反馈信息的传输时间间隔为基准的时频栅格中的序号；所述时频栅格在时域上包括所述用户设备从发送所述数据到接收到所述反馈信息的最大传输时间间隔，在频域上包括为所述免调度传输所配置的总带宽。
在本实施例中，信息接收单元1502可以通过控制信道显式地接收所述资源位置信息，或也可以通过对控制信道解扰而隐式地接收所述资源位置信息。
在本实施例中，信息接收单元1502还可以接收所述数据对应的HARQ进程编号。
如图15所示，接收反馈信息的装置1500还可以包括：盲检单元1503。
例如，盲检单元1503可以对多个下行控制信息格式进行盲检；其中，在一个下行控制信息格式中所述资源位置信息和所述混合自动重传请求进程编号被指示；在另一个下行控制信息格式中所述混合自动重传请求进程编号被指示。
再例如，盲检单元1503可以使用标识信息对所述控制信道进行盲检；其中，所述标识信息由所述用户设备对应的解调参考信号序列，以及所述资源位置对应的编号和/或所述混合自动重传请求进程编号确定。
在本实施例中，所述数据所对应的解调参考信号可以隐式地携带有所述数据对应的混合自动重传请求进程编号。其中，不同的混合自动重传请求进程可以使用不同的解调参考信号；或者所述用户设备的解调参考信号被不同的调制符号相乘，所述不同的调制符号对应于不同的混合自动重传请求进程。
值得注意的是，以上仅对与本发明相关的各部件或模块进行了说明，但本发明不限于此。接收反馈信息的装置1500还可以包括其他部件或者模块，关于这些部件或者模块的具体内容，可以参考相关技术。
由上述实施例可知，网络设备显式地或隐式地向用户设备发送数据的资源位置信息和/或混合自动重传请求进程编号，以及所述数据对应的反馈信息；由此，所传输的数据和上行授权信令中的反馈信息能够建立起对应关系，能够在免调度传输中支持多个HARQ进程。
实施例8
本发明实施例还提供一种通信***，可以参考图1，与实施例1至7相同的内容不再赘述。在本实施例中，通信***100可以包括：
网络设备101，其配置有如实施例6所述的发送反馈信息的装置1400。
用户设备102，其配置有如实施例7所述的接收反馈信息的装置1500。
本发明实施例还提供一种网络设备，例如可以是基站，但本发明不限于此，还可以是其他的网络设备。
图16是本发明实施例的网络设备的构成示意图。如图16所示，网络设备1600可以包括：处理器1610(例如中央处理器CPU)和存储器1620；存储器1620耦合到处理器1610。其中该存储器1620可存储各种数据；此外还存储信息处理的程序 1630，并且在处理器1610的控制下执行该程序1630。
例如，处理器1610可以被配置为执行程序1630而进行如下的控制：接收用户设备通过免调度传输方式发送的数据；确定所述数据的资源位置信息和/或所述数据的混合自动重传请求进程编号；以及显式地或隐式地向所述用户设备发送所述资源位置信息和/或所述混合自动重传请求进程编号，以及所述数据对应的反馈信息。
此外，如图16所示，网络设备1600还可以包括：收发机1640和天线1650等；其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，网络设备1600也并不是必须要包括图16中所示的所有部件；此外，网络设备1600还可以包括图16中没有示出的部件，可以参考现有技术。
本发明实施例还提供一种用户设备，但本发明不限于此，还可以是其他的设备。
图17是本发明实施例的用户设备的示意图。如图17所示，该用户设备1700可以包括处理器1710和存储器1720；存储器1720存储有数据和程序，并耦合到处理器1710。值得注意的是，该图是示例性的；还可以使用其他类型的结构，来补充或代替该结构，以实现电信功能或其他功能。
例如，处理器1710可以被配置为进行如下的控制：通过免调度传输方式向网络设备发送数据；以及接收所述网络设备显式地或隐式地发送的所述数据的资源位置信息和/或所述数据的混合自动重传请求进程编号，以及所述数据对应的反馈信息。
如图17所示，该用户设备1700还可以包括：通信模块1730、输入单元1740、显示器1750、电源1760。其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，用户设备1700也并不是必须要包括图17中所示的所有部件，上述部件并不是必需的；此外，用户设备1700还可以包括图17中没有示出的部件，可以参考现有技术。
本发明实施例还提供一种计算机可读程序，其中当在网络设备中执行所述程序时，所述程序使得所述网络设备执行实施例1至5所述的发送反馈信息的方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得网络设备执行实施例1至5所述的发送反馈信息的方法。
本发明实施例还提供一种计算机可读程序，其中当在用户设备中执行所述程序时，所述程序使得所述用户设备执行实施例1至5所述的接收反馈信息的方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质，其中所述计算机可 读程序使得用户设备执行实施例1至5所述的接收反馈信息的方法。
本发明以上的装置和方法可以由硬件实现，也可以由硬件结合软件实现。本发明涉及这样的计算机可读程序，当该程序被逻辑部件所执行时，能够使该逻辑部件实现上文所述的装置或构成部件，或使该逻辑部件实现上文所述的各种方法或步骤。本发明还涉及用于存储以上程序的存储介质，如硬盘、磁盘、光盘、DVD、flash存储器等。
结合本发明实施例描述的方法/装置可直接体现为硬件、由处理器执行的软件模块或二者组合。例如，图14中所示的功能框图中的一个或多个和/或功能框图的一个或多个组合(例如，信息确定单元和信息发送单元等)，既可以对应于计算机程序流程的各个软件模块，亦可以对应于各个硬件模块。这些软件模块，可以分别对应于图3所示的各个步骤。这些硬件模块例如可利用现场可编程门阵列(FPGA)将这些软件模块固化而实现。
软件模块可以位于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、移动磁盘、CD-ROM或者本领域已知的任何其它形式的存储介质。可以将一种存储介质耦接至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息；或者该存储介质可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。该软件模块可以存储在移动终端的存储器中，也可以存储在可***移动终端的存储卡中。例如，若设备(如移动终端)采用的是较大容量的MEGA-SIM卡或者大容量的闪存装置，则该软件模块可存储在该MEGA-SIM卡或者大容量的闪存装置中。
针对附图中描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，可以实现为用于执行本发明所描述功能的通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其它可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件或者其任意适当组合。针对附图描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，还可以实现为计算设备的组合，例如，DSP和微处理器的组合、多个微处理器、与DSP通信结合的一个或多个微处理器或者任何其它这种配置。
以上结合具体的实施方式对本发明进行了描述，但本领域技术人员应该清楚，这些描述都是示例性的，并不是对本发明保护范围的限制。本领域技术人员可以根据本发明的精神和原理对本发明做出各种变型和修改，这些变型和修改也在本发明的范围内。

Claims (20)

  1. 一种反馈信息的发送装置，支持免调度传输中的多个混合自动重传请求进程，所述装置包括：
    数据接收单元，其接收用户设备通过免调度传输方式发送的数据；
    信息确定单元，其确定所述数据的资源位置信息和/或所述数据的混合自动重传请求进程编号；以及
    信息发送单元，其显式地或隐式地向所述用户设备发送所述资源位置信息和/或所述混合自动重传请求进程编号，以及所述数据对应的反馈信息。
  2. 根据权利要求1所述的装置，其中，所述资源位置信息是以发送所述反馈信息的传输时间间隔为基准的偏移信息。
  3. 根据权利要求2所述的装置，其中，所述资源位置信息为所述数据在一以发送所述反馈信息的传输时间间隔为基准的时频栅格中的序号；所述时频栅格在时域上包括所述用户设备从发送所述数据到接收到所述反馈信息的最大传输时间间隔，在频域上包括为所述免调度传输所配置的总带宽。
  4. 根据权利要求2所述的装置，其中，所述信息发送单元还将所述数据对应的混合自动重传请求进程编号发送给所述用户设备。
  5. 根据权利要求4所述的装置，其中，对于所述数据的初传，所述资源位置信息和所述混合自动重传请求进程编号被指示；对于所述数据的后续重传，所述混合自动重传请求进程编号被指示。
  6. 根据权利要求2所述的装置，其中，在所述数据被多次重复传输的情况下，将所述多次重复传输中所述数据的一个或多个资源位置发送给所述用户设备。
  7. 根据权利要求1所述的装置，其中，所述信息发送单元通过控制信道显式地将所述资源位置信息发送给所述用户设备；或者，所述信息发送单元通过对控制信道加扰而隐式地将所述资源位置信息发送给所述用户设备。
  8. 根据权利要求1所述的装置，其中，所述装置还包括：
    加扰单元，其使用标识信息对所述控制信道的循环冗余校验码进行加扰；其中，所述标识信息由所述用户设备对应的解调参考信号序列，以及所述资源位置对应的编号和/或所述混合自动重传请求进程编号确定。
  9. 根据权利要求1所述的装置，其中，所述数据所对应的解调参考信号隐式地携带有所述数据对应的混合自动重传请求进程编号。
  10. 根据权利要求9所述的装置，其中，不同的混合自动重传请求进程使用不同的解调参考信号；或者所述用户设备的解调参考信号被不同的调制符号相乘，所述不同的调制符号对应于不同的混合自动重传请求进程。
  11. 根据权利要求9所述的装置，其中，所述装置还包括：
    盲检单元，其对所述用户设备发送的所述解调参考信号进行盲检；
    所述信息确定单元根据所述盲检的结果确定所述数据对应的混合自动重传请求进程编号。
  12. 一种反馈信息的接收装置，支持免调度传输中的多个混合自动重传请求进程，所述装置包括：
    数据发送单元，其通过免调度传输方式向网络设备发送数据；以及
    信息接收单元，其接收所述网络设备显式地或隐式地发送的所述数据的资源位置信息和/或所述数据的混合自动重传请求进程编号，以及所述数据对应的反馈信息。
  13. 根据权利要求12所述的装置，其中，所述资源位置信息是以发送所述反馈信息的传输时间间隔为基准的偏移信息。
  14. 根据权利要求13所述的装置，其中，所述资源位置信息为所述数据在一以发送所述反馈信息的传输时间间隔为基准的时频栅格中的序号；所述时频栅格在时域上包括所述用户设备从发送所述数据到接收到所述反馈信息的最大传输时间间隔，在频域上包括为所述免调度传输所配置的总带宽。
  15. 根据权利要求12所述的装置，其中，所述信息接收单元通过控制信道显式地接收所述资源位置信息，或通过对控制信道解扰而隐式地接收所述资源位置信息。
  16. 根据权利要求15所述的装置，其中，所述信息接收单元还接收所述数据对应的混合自动重传请求进程编号。
  17. 根据权利要求15所述的装置，其中，所述装置还包括：
    盲检单元，其对多个下行控制信息格式进行盲检；其中，在一个下行控制信息格式中所述资源位置信息和所述混合自动重传请求进程编号被指示；在另一个下行控制信息格式中所述混合自动重传请求进程编号被指示；
    或者，使用标识信息对所述控制信道进行盲检；其中，所述标识信息由所述用户 设备对应的解调参考信号序列，以及所述资源位置对应的编号和/或所述混合自动重传请求进程编号确定。
  18. 根据权利要求12所述的装置，其中，所述数据所对应的解调参考信号隐式地携带有所述数据对应的混合自动重传请求进程编号。
  19. 根据权利要求18所述的装置，其中，不同的混合自动重传请求进程使用不同的解调参考信号；或者所述用户设备的解调参考信号被不同的调制符号相乘，所述不同的调制符号对应于不同的混合自动重传请求进程。
  20. 一种通信***，支持免调度传输中的多个混合自动重传请求进程，所述通信***包括：
    网络设备，其包括权利要求1所述的反馈信息的发送装置；
    用户设备，其包括权利要求12所述的反馈信息的接收装置。
PCT/CN2017/083296 2017-05-05 2017-05-05 反馈信息的发送和接收方法、装置以及通信*** WO2018201468A1 (zh)

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CN101106439A (zh) * 2006-07-12 2008-01-16 大唐移动通信设备有限公司 混合自动重传请求进程处理方法及装置
CN104685813A (zh) * 2013-05-08 2015-06-03 华为技术有限公司 发送反馈信息、接收反馈信息的方法及装置
CN105978671A (zh) * 2016-06-27 2016-09-28 深圳市金立通信设备有限公司 一种harq重传的指示方法及相关设备
WO2017015911A1 (zh) * 2015-07-29 2017-02-02 华为技术有限公司 反馈信息的发送装置、接收装置及方法

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CN101106439A (zh) * 2006-07-12 2008-01-16 大唐移动通信设备有限公司 混合自动重传请求进程处理方法及装置
CN104685813A (zh) * 2013-05-08 2015-06-03 华为技术有限公司 发送反馈信息、接收反馈信息的方法及装置
WO2017015911A1 (zh) * 2015-07-29 2017-02-02 华为技术有限公司 反馈信息的发送装置、接收装置及方法
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