WO2019029588A1 - Procédé, terminal et dispositif de réseau permettant de déterminer des ressources de transmission en liaison montante - Google Patents

Procédé, terminal et dispositif de réseau permettant de déterminer des ressources de transmission en liaison montante Download PDF

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Publication number
WO2019029588A1
WO2019029588A1 PCT/CN2018/099494 CN2018099494W WO2019029588A1 WO 2019029588 A1 WO2019029588 A1 WO 2019029588A1 CN 2018099494 W CN2018099494 W CN 2018099494W WO 2019029588 A1 WO2019029588 A1 WO 2019029588A1
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WO
WIPO (PCT)
Prior art keywords
uplink transmission
terminal
information
transmission resource
symbol
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Application number
PCT/CN2018/099494
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English (en)
Chinese (zh)
Inventor
焦淑蓉
张弛
张鹏
彭金磷
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华为技术有限公司
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Publication of WO2019029588A1 publication Critical patent/WO2019029588A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method, a terminal, and a network device for determining an uplink transmission resource.
  • the international telecommunication union defines three types of application scenarios for 5G and future mobile communication systems: enhanced mobile broadband (eMBB), high reliable low latency communication (ultra reliable and low latency). Communications, URLLC) and massive machine type communications (mMTC).
  • eMBB enhanced mobile broadband
  • URLLC high reliable low latency communication
  • mMTC massive machine type communications
  • the URLLC service requires extremely high latency.
  • the transmission delay is required to be within 0.5 milliseconds (millisecond, ms) without considering reliability. Under the premise of 99.999% reliability, the transmission delay is required to be within 1 ms. .
  • the smallest time scheduling unit is a transmission time interval (TTI) of 1 ms duration.
  • TTI transmission time interval
  • the air interface data transmission can use a shorter time scheduling unit, for example, using a mini-slot.
  • a mini-slot includes one or more symbols (also referred to as time domain symbols), where the symbols may be orthogonal frequency division multiplexing (OFDM) symbols.
  • OFDM orthogonal frequency division multiplexing
  • the location of the downlink transmission resource for downlink data transmission and the location of the uplink transmission resource for uplink control signaling transmission are flexible. Moreover, the range of the location of these uplink and downlink transmission resources is relatively large. If the location of the uplink transmission resource is to be accurately indicated, more bits need to be occupied, thereby affecting the reception reliability of downlink control information (DCI).
  • the location of the uplink transmission resource for performing uplink control signaling transmission may be timing information of uplink control signaling. If the timing information of the uplink control signaling is given during the downlink data transmission, the flexible allocation of the next uplink and downlink resources is inevitably limited, which may affect the flexibility of uplink and downlink resource configuration.
  • the embodiment of the present application provides a method, a terminal, and a network device for determining an uplink transmission resource, and can determine an appropriate uplink transmission resource while ensuring flexibility of uplink and downlink resource configuration.
  • an embodiment of the present application provides a method for determining an uplink transmission resource.
  • the method includes:
  • the terminal receives the signaling that carries the symbol interval information, where the symbol interval information is used to indicate the number of symbols of the terminal from the end of the downlink transmission to the start of the uplink transmission; the terminal receives the information carrying the first slot format information. Signaling, the first slot format information is used to indicate a symbol for uplink transmission in a first slot and a distribution of symbols used for downlink transmission; the terminal according to the symbol interval information and the first time The slot interval information determines a first uplink transmission resource of the terminal.
  • the number of symbols of the interval indicated by the symbol interval information is one of a preset number of sets of symbols.
  • the terminal can determine the first uplink transmission resource required by the terminal by receiving the symbol interval information and the first slot format information. Because the slot format is considered when determining the first uplink transmission resource, the original uplink and downlink resource configuration can be ensured, and the flexibility of the original uplink and downlink resource configuration is ensured.
  • the terminal receives signaling that carries the symbol quantity information, where the symbol quantity information is used to indicate the number of symbols occupied by the terminal for uplink transmission; the terminal according to the symbol interval information and the first Determining the uplink transmission resource of the terminal by the slot information includes: determining, by the terminal, the first uplink transmission resource of the terminal according to the symbol interval information, the first slot format information, and the symbol quantity information . In the process of determining the first uplink transmission resource of the terminal, the number of symbols required for the terminal to perform uplink transmission is further considered, and the start position and the end position of the first uplink transmission resource can be accurately obtained.
  • the first uplink transmission resource is located in the first time slot.
  • the start symbol of the first uplink transmission resource is one of a predefined special symbol set in the first time slot, and the special symbol set is allowed in the first time slot.
  • the predefined special symbol set may be a set of odd-numbered or even-numbered symbols in the symbols used for uplink transmission in the first time slot.
  • the method includes: the terminal receiving signaling carrying threshold information, where the threshold information is used to indicate that the terminal receives downlink data and feedback The maximum number of symbols between ACK/NACK intervals.
  • the terminal may terminate the feedback ACK/NACK when the maximum number indicated by the threshold information is exceeded and the terminal has not found a suitable first uplink transmission resource.
  • the terminal receives the signaling that carries the offset information, where the offset information is used to indicate the number of symbols that the terminal offsets the first uplink transmission resource; Determining, according to the offset information, the first uplink transmission resource, a second uplink transmission resource of the terminal.
  • the terminal receives signaling that carries the second slot format information, where the second slot format information is used to indicate a symbol that allows uplink transmission in the second slot; Determining, by the first uplink transmission resource, the second uplink transmission resource of the terminal, the terminal, according to the offset information, the first uplink transmission resource, and the second time slot Format information, determining a second uplink transmission resource of the terminal; the second uplink transmission resource is located in the second time slot.
  • the terminal may perform offset on the basis of the first uplink transmission resource to obtain the second uplink transmission resource.
  • the uplink transmission resources determined by one or more terminals may be offset to other locations by receiving the offset information, so that resource balancing can be achieved.
  • the embodiment of the present application provides a method for configuring an uplink transmission resource.
  • the method includes: the network device sends, to the terminal, signaling that carries the first slot format information, where the first slot format information is used to indicate a symbol that is allowed to be uplinked in the first time slot; Transmitting, by the terminal, signaling that carries the first slot format information, where the first slot format information is used to indicate a symbol for uplink transmission in the first slot and a distribution of symbols used for downlink transmission; the network device Determining, according to the symbol interval information and the first slot interval information, a first uplink transmission resource of the terminal.
  • the number of symbols of the interval indicated by the symbol interval information is one of a preset number of sets of symbols.
  • the network device can enable the terminal to determine the first uplink transmission resource that it needs by sending the symbol interval information and the first slot format information to the terminal.
  • the network device may also determine the first uplink transmission resource of the terminal according to the symbol interval information and the first slot format information. In this way, the network device can receive the data sent by the terminal on the first uplink transmission resource. Because the slot format is considered when determining the first uplink transmission resource, the original uplink and downlink resource configuration can be ensured, and the flexibility of the original uplink and downlink resource configuration is ensured.
  • the network device sends signaling for carrying the symbol quantity information to the terminal, where the symbol quantity information is used to indicate the number of symbols occupied by the terminal for uplink transmission; the network device according to the symbol interval Determining, by the information, the first time slot interval information, the uplink transmission resource of the terminal, the network device, determining, according to the symbol interval information, the first time slot format information, and the symbol quantity information, The first uplink transmission resource of the terminal.
  • the number of symbols required for the terminal to perform uplink transmission is further considered, and the start position and the end position of the first uplink transmission resource can be accurately obtained.
  • the first uplink transmission resource is located in the first time slot.
  • the start symbol of the first uplink transmission resource is one of a predefined special symbol set in the first time slot, and the special symbol set is allowed in the first time slot.
  • the method includes: the network device sending, to the terminal, signaling that carries threshold information, where the threshold information is used to indicate the terminal The maximum number of symbols that receive the interval between the downlink data and the feedback ACK/NACK.
  • the terminal may terminate the feedback ACK/NACK when the maximum number indicated by the threshold information is exceeded and the terminal has not found a suitable first uplink transmission resource.
  • the network device can control whether the terminal feeds back ACK/NACK and when to terminate the feedback ACK/NACK.
  • the network device sends, to the terminal, signaling that carries offset information, where the offset information is used to indicate that the terminal offsets the first uplink transmission resource. And determining, by the network device, the second uplink transmission resource of the terminal according to the offset information and the first uplink transmission resource.
  • the network device sends, to the terminal, signaling that carries second slot format information, where the second slot format information is used to indicate a symbol that allows uplink transmission in the second slot. Determining, by the network device, the second uplink transmission resource of the terminal according to the offset information and the first uplink transmission resource, that: the network device, according to the offset information, the first uplink transmission resource Determining, by the second slot format information, a second uplink transmission resource of the terminal; the second uplink transmission resource is located in the second time slot.
  • the network device may send the offset information to one or more of the terminals, so that the uplink transmission resources determined by the one or more terminals are offset to other locations, so that the resource balancing can be achieved. .
  • an embodiment of the present application provides a terminal.
  • the terminal includes: a receiving module, configured to receive signaling that carries symbol interval information, where the symbol interval information is used to indicate a number of symbols of an interval between a downlink transmission end and an uplink transmission start of the terminal;
  • the module is further configured to receive signaling that carries the first slot format information, where the first slot format information is used to indicate a symbol for uplink transmission in the first slot and a distribution of symbols used for downlink transmission; And determining, by using the symbol interval information and the first time slot interval information, a first uplink transmission resource of the terminal.
  • the number of symbols of the interval indicated by the symbol interval information is one of a preset number of sets of symbols.
  • the receiving module is further configured to receive signaling that carries the symbol quantity information, where the symbol quantity information is used to indicate the number of symbols occupied by the terminal for uplink transmission;
  • the symbol interval information, the first slot format information, and the symbol number information determine a first uplink transmission resource of the terminal.
  • the first uplink transmission resource is located in the first time slot.
  • the start symbol of the first uplink transmission resource is one of a predefined special symbol set in the first time slot, and the special symbol set is allowed in the first time slot.
  • the receiving module is further configured to receive signaling that carries threshold information, where the threshold information is used to indicate that the terminal receives downlink data and a feedback ACK.
  • the maximum number of symbols between /NACK intervals The terminal may terminate the feedback ACK/NACK when the maximum number indicated by the threshold information is exceeded and the terminal has not found a suitable first uplink transmission resource.
  • the receiving module is further configured to receive signaling that carries the offset information, where the offset information is used to indicate the number of symbols that the terminal offsets the first uplink transmission resource.
  • the processing module is further configured to determine, according to the offset information, the first uplink transmission resource, a second uplink transmission resource of the terminal.
  • the receiving module is further configured to receive signaling that carries second slot format information, where the second slot format information is used to indicate a symbol that allows uplink transmission in the second time slot;
  • the processing module is specifically configured to determine, according to the offset information, the first uplink transmission resource, and the second slot format information, a second uplink transmission resource of the terminal; where the second uplink transmission resource is located The second time slot.
  • an embodiment of the present application provides a network device.
  • the network device includes: a sending module, configured to send, to the terminal, signaling that carries the first slot format information, where the first slot format information is used to indicate a symbol that allows uplink transmission in the first time slot;
  • the sending module is further configured to send, to the terminal, signaling that carries the first slot format information, where the first slot format information is used to indicate a symbol for uplink transmission and a symbol for downlink transmission in the first slot.
  • a processing module configured to determine, according to the symbol interval information and the first time slot interval information, a first uplink transmission resource of the terminal.
  • the number of symbols of the interval indicated by the symbol interval information is one of a preset number of sets of symbols.
  • the sending module is further configured to send, to the terminal, signaling that carries the symbol quantity information, where the symbol quantity information is used to indicate the number of symbols occupied by the terminal for uplink transmission; And determining, according to the symbol interval information, the first slot format information, and the symbol quantity information, a first uplink transmission resource of the terminal.
  • the first uplink transmission resource is located in the first time slot.
  • the start symbol of the first uplink transmission resource is one of a predefined special symbol set in the first time slot, and the special symbol set is allowed in the first time slot.
  • the sending module is further configured to send, to the terminal, signaling that carries threshold information, where the threshold information is used to indicate that the terminal receives the downlink.
  • the maximum number of symbols between the data and the feedback ACK/NACK is further configured to send, to the terminal, signaling that carries threshold information, where the threshold information is used to indicate that the terminal receives the downlink. The maximum number of symbols between the data and the feedback ACK/NACK.
  • the sending module is further configured to send, to the terminal, signaling that carries the offset information, where the offset information is used to indicate that the terminal offsets the first uplink transmission resource.
  • the processing module is configured to determine a second uplink transmission resource of the terminal according to the offset information and the first uplink transmission resource.
  • the sending module is further configured to send, to the terminal, signaling that carries second slot format information, where the second slot format information is used to indicate that uplink is allowed in the second time slot. a symbol that is transmitted; the processing module is configured to determine, according to the offset information, the first uplink transmission resource, and the second slot format information, a second uplink transmission resource of the terminal; The uplink transmission resource is located in the second time slot.
  • an embodiment of the present application provides a chip.
  • the chip includes: at least one communication interface, at least one processor.
  • the chip also includes at least one memory as necessary.
  • the communication interface, the processor and the memory are interconnected by a circuit (and in some cases also a bus), the processor calls an instruction transmitted by another communication device or an instruction stored in the memory to perform the first method or the second method of the present application.
  • the chip can be used for terminals as well as for network devices.
  • an embodiment of the present application provides a terminal.
  • the terminal device includes: a memory and a processor.
  • the memory is used to store program instructions, and the processor is used to call program instructions in the memory to implement the functions of the terminal in the above first aspect.
  • an embodiment of the present application provides a network device.
  • the network device includes: a memory and a processor.
  • the memory is used to store program instructions, and the processor is used to call program instructions in the memory to implement the functions of the network device in the second aspect.
  • an embodiment of the present application provides a non-volatile storage medium, where one or more program codes are stored in the non-volatile storage medium.
  • program code When the program code is executed, related method steps performed by the terminal in the first aspect or related method steps performed by the network device in the second aspect may be completed.
  • FIG. 1 is a schematic structural diagram of a mobile communication system to which an embodiment of the present application is applied.
  • FIG. 2 is a schematic diagram of a method for determining an uplink transmission resource according to an embodiment of the present disclosure.
  • Fig. 3a is a schematic diagram showing the meaning of the symbol interval information N.
  • FIG. 3b is a schematic diagram of a slot format provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a method for determining an uplink transmission resource according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of a method for determining an uplink transmission resource according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram of a method for determining an uplink transmission resource according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of a method for determining an uplink transmission resource according to an embodiment of the present disclosure.
  • FIG. 8 is a block diagram of a terminal provided by the present application.
  • FIG. 9 is a block diagram of a network device provided by the present application.
  • FIG. 1 is a schematic structural diagram of a mobile communication system to which an embodiment of the present application is applied.
  • the mobile communication system includes a core network device, a radio access network device, and at least one terminal (such as terminal 1 and terminal 2 in FIG. 1).
  • the terminal is connected to the wireless access network device by means of a wireless connection, and the wireless access network device is connected to the core network device by wireless or wired.
  • the core network device and the wireless access network device may be independent physical devices, or may integrate the functions of the core network device with the logical functions of the wireless access network device on the same physical device, or may be a physical device.
  • the functions of some core network devices and the functions of some wireless access network devices are integrated.
  • the terminal can be fixed or mobile.
  • the network system may further include other network devices, such as a wireless relay device and a wireless backhaul device.
  • the embodiment of the present application does not limit the number of core network devices, radio access network devices, and terminals included in the mobile communication system.
  • the radio access network device is an access device that the terminal accesses to the mobile communication system by using a wireless method, and may be a base station, an evolved base station, a base station in a 5G mobile communication system, a base station in a future mobile communication system, or a WiFi system. Access nodes, etc.
  • the embodiments of the present application do not limit the specific technologies and specific device modes adopted by the radio access network device.
  • a terminal may also be called a terminal device, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), or the like.
  • the terminal can be a mobile phone, a tablet, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, industrial control (industrial control) Wireless terminal, wireless terminal in self driving, wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless terminal in transportation safety Wireless terminals in smart cities, wireless terminals in smart homes, and so on.
  • Radio access network equipment and terminals can be deployed on land, indoors or outdoors, hand-held or on-board; they can also be deployed on the water; they can also be deployed on aircraft, balloons and satellites in the air.
  • the application scenarios of the radio access network device and the terminal are not limited.
  • a core network device and a radio access network device are collectively referred to as a network device.
  • the uplink and downlink transmission resources are flexible and configurable. Therefore, it is necessary to design a determination scheme of an uplink transmission resource that can satisfy the URLLC requirement. Therefore, the embodiment of the present application proposes a method for determining an uplink transmission resource.
  • This method can be used for URLLC scenarios. Specifically, in the downlink transmission process of the URLLC, configuration signaling is sent. The terminal determines, according to the configuration signaling, a starting location of the uplink transmission resource, and further determines an uplink transmission resource according to the number of symbols occupied by the uplink transmission. Further, the starting position of the uplink transmission resource refers to a starting symbol of the uplink transmission resource. The finally determined uplink transmission resource refers to a time resource for performing uplink transmission, for example, a symbol for performing uplink transmission.
  • FIG. 2 is a schematic diagram of a method for determining an uplink transmission resource according to an embodiment of the present disclosure. As shown in FIG. 2, the method includes the following steps.
  • Step 201 The terminal receives, from the network device, signaling that carries symbol interval information, where the symbol interval information is used to indicate the number of symbols of the terminal from the end of the downlink transmission to the start of the uplink transmission.
  • the number of symbols indicated by the symbol interval information can be represented by N.
  • Fig. 3a is a schematic diagram showing the meaning of the symbol interval information N. As shown in FIG. 3a, k indicates that the last symbol of the downlink transmission of the terminal is the kth symbol, and k+N indicates that the first symbol for performing the uplink transmission is the k+Nth symbol. N symbols are separated between the kth symbol and the k+Nth symbol. These N symbols are the symbols of the interval between the end of the downlink transmission and the start of the uplink transmission.
  • the symbol interval information can be sent to the terminal through high layer signaling. For example, it can be sent to the terminal through RRC signaling or MAC signaling.
  • the symbol interval information can be sent to the terminal through physical layer signaling. For example, it can be sent to the terminal through DCI.
  • the unit of N may be a mini-slot or a slot in addition to the symbol. That is, the symbol interval information may be used to indicate the number of mini-slots or slots of the terminal from the end of the downlink transmission to the start of the uplink transmission.
  • the meaning of N is slightly different depending on the unit of N.
  • N means that if the downlink transmission is the end symbol of the kth symbol, the uplink transmission can start transmission at the k+Nth symbol.
  • the unit of N is a mini-slot or a slot
  • N indicates that if the downlink transmission is performed on the kth mini-slot or slot, the uplink transmission can be performed on the k+N mini-slot or slot.
  • the network device can determine N according to the capabilities of the terminal. Specifically, the terminal can report its own capabilities first.
  • the capability of the terminal herein refers to the demodulation and decoding capability of the terminal.
  • the terminal can be used to quantize the demodulation and decoding capability of the terminal from the time interval between receiving the downlink data and the uplink transmission. For example, the interval time can be characterized by the number of spaced time slots or the number of spaced symbols.
  • the embodiment of the present application describes an embodiment of the present application by taking the unit of N as a symbol.
  • the unit of N is a mini-slot or a slot, which can be similarly obtained, and will not be described here.
  • Step 202 The terminal receives, from the network device, signaling that carries the first slot format information, where the first slot format information is used to indicate a symbol that allows uplink transmission in the first slot.
  • the first slot format information may be slot format related information (SFI) of the first slot.
  • SFI can be dynamically sent through DCI.
  • the SFI includes the downlink symbol in the first slot, the guard interval GP (Guard Period), the number of uplink symbols, and the location.
  • the downlink symbol indicates a symbol for downlink transmission in the first slot
  • the uplink symbol indicates a symbol for uplink transmission in the first slot.
  • the first slot format information indicates the distribution of symbols for uplink transmission and the symbols for downlink transmission in the first slot. This distribution is applicable to all terminals under the network device. Based on the first slot format information, it may be determined which symbols in the first slot are symbols for uplink transmission. Therefore, the terminal can only select some or all of the symbols for uplink transmission in those symbols that can be used for uplink transmission.
  • the terminal may determine the first uplink transmission resource of the terminal according to the symbol interval information and the first slot interval information. For example, the terminal searches for the Nth symbol after the end of the downlink transmission, and finds the first symbol that can be uplinked by the user in the first time slot, and the symbols that can be used for uplink transmission after the symbol can be It is considered to be the first uplink transmission resource.
  • the terminal may perform uplink transmission on the first uplink transmission resource.
  • FIG. 3b is a schematic diagram of a slot format provided by an embodiment of the present application.
  • the figure includes two time slots (slot1 and slot2).
  • Each of the time slots includes 7 symbols.
  • Each symbol of each time slot has a corresponding number above it.
  • a symbol with a horizontal line as a padding indicates that it is a down symbol, and a symbol with a padded pad indicates that it is an up symbol.
  • Unfilled symbols (such as the fifth symbol in slot 1) indicate that it is the guard interval between upstream transmissions.
  • the first to fourth symbols in slot 1 shown in FIG. 3b are downlink symbols and can be used for downlink transmission.
  • the 6-7th symbols in slot1 are uplink symbols and can be used for uplink transmission.
  • the configuration of the uplink and downlink symbols of each time slot may be arbitrary, and the number of time slots may be more, which is not limited in this application.
  • the slot format similar to that shown in FIG. 3b will be described below as an example, but the configuration of the uplink and downlink symbols of each slot may be slightly different.
  • the meanings of the related graphic representations can be similarly obtained, so they will not be described one by one.
  • the downlink transmission end position of the terminal is not necessarily the last downlink symbol of one slot.
  • the terminal performs downlink transmission on the 2-3th symbol of slot 1.
  • the location where the downlink transmission ends of the terminal is the third symbol of slot 1.
  • the starting symbol of the first uplink transmission resource of the terminal is the 7th symbol of slot1. Because the seventh symbol of slot 1 is followed by an uplink symbol, it can be used for uplink transmission of the terminal. Therefore, the first uplink transmission resource determined by the terminal may be the 7th symbol of slot 1 to the 7th symbol of slot 2.
  • Step 203 The terminal receives, from the network device, signaling that carries the symbol quantity information, where the symbol quantity information is used to indicate the number of symbols occupied by the terminal for uplink transmission.
  • the symbol quantity information may be sent by the network device to the terminal through a high layer signaling configuration. Using the symbol quantity information, the first uplink transmission resource determined by step 204 can be used. It is possible to determine which symbols are used by the terminal for uplink transmission.
  • Step 204 The terminal determines the first uplink transmission resource of the terminal according to the symbol interval information, the first slot format information, and the symbol quantity information.
  • a start symbol used to start searching for an uplink transmission resource can be determined. Then, according to the number M of symbols indicated by the symbol quantity information, M symbols (including the start symbol) after the start symbol are determined as the first uplink transmission resource. If the start symbol is the first symbol and there are no consecutive M uplink symbols, the search is continued until the consecutive M uplink symbols are found as the first uplink transmission symbol.
  • FIG. 4 is a schematic diagram of a method for determining an uplink transmission resource according to an embodiment of the present disclosure. As shown in FIG. 4, the 3-4th symbol of slot 1 is used for downlink transmission of the terminal, and the location where the downlink transmission of the terminal ends is the fourth symbol. Let N be equal to 3 and M be greater than 1 (such as 2).
  • the first available uplink transmission resource that is determined to be determined is the seventh symbol of slot 1 and the first symbol of slot 2. Then the determined uplink transmission resources span slot1 and slot2. The uplink transmission resources determined at this time are not satisfactory. Therefore, it is necessary to start backward search from the next symbol of the start symbol of the determined uplink transmission resource for the first time. The search starts from the next symbol of the seventh symbol of slot 1 (the first symbol of slot 2).
  • the first uplink resource that satisfies SFI, N, and M can be used as the first uplink transmission resource of the terminal. For example, if the first 1-2 symbols of slot 2 shown in the lower half of FIG. 4 satisfy SFI, N, and M, the 1-2th symbol of slot 2 is determined as the first uplink transmission resource. At this time, the terminal may perform uplink transmission on the first uplink transmission resource.
  • FIG. 5 is a schematic diagram of a method for determining an uplink transmission resource according to an embodiment of the present disclosure.
  • the 1-2th symbol of slot 1 is used for downlink transmission of the terminal.
  • the last four symbols of slot1 are the upstream symbols. If the four symbols can only be used in two groups, the condition is not satisfied when the starting symbol of the determined uplink transmission resource is the fifth symbol. It is still necessary to start looking backwards from the determined uplink transmission resources.
  • the first uplink resource that satisfies SFI, N, and M can be used as the first uplink transmission resource, for example, the sixth to seventh symbols of slot 1 shown in the lower half of FIG.
  • Step 205 The network device determines, according to the symbol interval information, the first slot format information, and the symbol quantity information, the first uplink transmission resource of the terminal.
  • the network device also needs to know the resources for the uplink transmission of the terminal, so that the network device can receive the data transmitted by the terminal on the corresponding resource. Therefore, the network device determines that the first uplink transmission resource of the terminal is the same as or similar to that of the terminal in step 205, and details are not described herein again. The following description will be made by taking FIG. 6 as an example.
  • FIG. 6 is a schematic diagram of a method for determining an uplink transmission resource according to an embodiment of the present disclosure.
  • the terminal performs downlink transmission on the 3-4th symbol of slot 1.
  • the location where the downlink transmission ends of the terminal is the fourth symbol of slot 1.
  • the search is started at the position indicated by N equal to 3.
  • N the number of symbols occupied by the uplink transmission.
  • the first uplink transmission resource is located in the first time slot when the requirement of not spanning the time slot is met. That is to say, the network device or the terminal may have searched for one or more time slots before finding the first time slot, but first finds uplink transmission resources satisfying SFI, N and M in the first time slot. Of course, the network device or the terminal needs to know the SFI of the previous one or more time slots. For example, slot 2 in Figure 6 can be considered as the first time slot.
  • Step 206 The terminal receives, from the network device, signaling that carries the offset information, where the offset information is used to indicate the number of symbols that the terminal offsets the first uplink transmission resource.
  • the offset information can be represented by one or more bits. For example, add 1bit to DCI. 0 means no offset, 1 means offset by n symbols. The value of n is a positive integer.
  • Step 207 The terminal receives, from the network device, signaling that carries the second slot format information, where the second slot format information is used to indicate a symbol that allows uplink transmission in the second slot.
  • the second slot format information is similar to the physical meaning of the first slot format information, and may be determined by referring to the above, and details are not described herein again.
  • Step 208 The terminal determines the second uplink transmission resource of the terminal according to the offset information, the first uplink transmission resource, and the second slot format information.
  • the terminal continues to search for uplink transmission resources satisfying N, SFI, and M after offsetting n symbols based on the first uplink transmission resource determined by the foregoing steps. Specifically, starting from the symbol after the n symbols of the first uplink transmission resource is offset, the uplink transmission resources satisfying SFI, N, and M are searched for. The first uplink transmission resource found is used as the second uplink transmission resource. In the process of searching, the uplink transmission resources satisfying SFI, N and M can be found up to the second time slot. Therefore, the terminal needs to know the second slot format information. If the uplink transmission resources satisfying SFI, N and M can also be found in the first time slot, step 207 can be omitted.
  • FIG. 7 is a schematic diagram of a method for determining an uplink transmission resource according to an embodiment of the present disclosure.
  • the first time slot indicated by the first time slot format information may be slot 1
  • the second time slot indicated by the second time slot format information may be slot 2 .
  • N be equal to 2
  • M 2
  • the terminal may determine that the sixth to seventh symbols of slot 1 are the first uplink transmission resources.
  • the terminal receives the offset information, and the offset information indicates that the terminal is offset by one symbol, the terminal can find the 6th-7th symbol of slot2 as the second uplink transmission resource by the manner described above.
  • the uplink transmission resource of the part of the terminal may be offset to other locations by sending offset information to some terminals. The purpose of resource balance.
  • Step 209 The network device determines, according to the offset information, the first uplink transmission resource, and the second slot format information, a second uplink transmission resource of the terminal.
  • the network device determines that the second uplink transmission resource of the terminal is the same as or similar to that of the terminal in step 208, and details are not described herein again.
  • Step 210 The terminal performs uplink transmission on the second uplink transmission resource.
  • the steps 206-209 can be omitted.
  • the terminal performs uplink transmission on the first uplink transmission resource.
  • the terminal may further receive signaling carrying the threshold information from the network device.
  • the threshold information is used to indicate the maximum number of symbols of the terminal from the end of the downlink transmission to the start of the uplink transmission.
  • the threshold information is used to indicate that the terminal receives the maximum number of symbols between the downlink data and the feedback ACK/NACK.
  • the terminal can be configured to not need to feed back ACK/NACK when the uplink transmission resource that has not been available before the threshold is exceeded.
  • a threshold mode may be introduced, and the RRC configuration turns the threshold mode on or off. You can also increase the infinity in an optional set of thresholds. If the RRC configuration threshold is infinite, it is equivalent to the network device requiring the terminal to always look up resources until it finds an uplink transmission resource that can be used for reporting ACK/NACK.
  • the physical meaning of each element in the set is the same or similar to the physical meaning of N.
  • Nx can be interpreted as the last symbol of the downlink transmission is the kth symbol (which may also be a slot or a mini-slot), and the ACK/NACK is fed back at the k+Nx symbols.
  • the number of symbols of the interval indicated by the symbol interval information is one of a preset number of sets of symbols.
  • the minimum value N0 of this set is configured to take into account the demodulation and decoding capabilities of the terminal.
  • the remaining Nx values may be determined by the base station according to factors such as the load of the cell and the service requirements of the user (such as delay, reliability requirements, etc.). There is no fixed relationship between multiple Nx.
  • the network device and the terminal may perform the second search by using N1 as N, and then analogously, if the available uplink transmission resource is not found after the first search is performed by using N0 as N. Until the available upstream transmission resources are found.
  • the threshold information can also be used to terminate the search for the uplink transmission resource.
  • the terminal determines whether k+Nx is a symbol that can be used for uplink transmission.
  • the terminal can be obtained through SFI. If the k+Nxth symbol is a symbol that can be used for uplink transmission, and the symbol that can be used for uplink transmission after the k+Nxth symbol satisfies the number of symbols to be uplink transmitted, the terminal feeds back ACK/NACK at k+Nx. ;
  • the terminal is at the k+N (x) +1) symbols repeat the above process. .
  • the terminal sequentially performs the above-mentioned attempts in order according to the set ⁇ N 0 , N 1 , N 2 ..., N (M-1) ⁇ . If after trying all the elements in the set ⁇ N 0 , N 1 , N 2 ..., N (M-1) ⁇ , the uplink transmission resource is still not determined, the terminal gives up this feedback.
  • the information carried by the high-layer signaling/physical layer signaling enables the terminal to find the uplink transmission resource in a flexible environment where the uplink and downlink resources are variable.
  • the flexibility of the network device for resource allocation is ensured without increasing the physical layer control signaling overhead.
  • FIG. 8 is a block diagram of a terminal provided by the present application.
  • the terminal includes: a receiving module 801, configured to receive signaling carrying symbol interval information, where the symbol interval information is used to indicate a number of symbols of the terminal from the end of the downlink transmission to the start of the uplink transmission.
  • the receiving module 801 is further configured to receive signaling that carries the first slot format information, where the first slot format information is used to indicate a symbol for uplink transmission in the first slot and a distribution of symbols used for downlink transmission;
  • the processing module 802 is configured to determine, according to the symbol interval information and the first slot interval information, a first uplink transmission resource of the terminal.
  • the number of symbols of the interval indicated by the symbol interval information is one of a preset number of sets of symbols.
  • the receiving module 801 is further configured to receive signaling that carries the symbol quantity information, where the symbol quantity information is used to indicate the number of symbols occupied by the terminal for uplink transmission; the processing module 802 is specifically configured to use the symbol interval information according to the symbol interval information. And the first slot format information and the number of the pieces of information determine the first uplink transmission resource of the terminal.
  • the first uplink transmission resource is located in the first time slot.
  • the start symbol of the first uplink transmission resource is one of a predefined special symbol set in the first time slot, and the special symbol set is a symbol set in the first time slot that is allowed as the start symbol of the uplink transmission resource.
  • the receiving module 801 is further configured to receive signaling that carries the threshold information, where the threshold information is used to indicate that the terminal receives the interval between the downlink data and the feedback ACK/NACK. The maximum number of symbols. The terminal may terminate the feedback ACK/NACK when the maximum number indicated by the threshold information is exceeded and the terminal has not found a suitable first uplink transmission resource.
  • the receiving module 801 is further configured to receive signaling that carries offset information, where the offset information is used to indicate a number of symbols that the terminal offsets the first uplink transmission resource; the processing module 802 is further configured to use the offset according to the offset The information, the first uplink transmission resource, and the second uplink transmission resource of the terminal are determined.
  • the receiving module 801 is further configured to receive signaling that carries the second slot format information, where the second slot format information is used to indicate a symbol that is allowed to be uplinked in the second time slot; the processing module 802 is specifically configured to use the And shifting the information, the first uplink transmission resource, and the second slot format information to determine a second uplink transmission resource of the terminal; the second uplink transmission resource is located in the second time slot.
  • FIG. 9 is a block diagram of a network device provided by the present application.
  • the network device includes: a sending module 902, configured to send, to the terminal, signaling that carries the first slot format information, where the first slot format information is used to indicate a symbol that is allowed to be uplinked in the first slot; the sending module 902 And is further configured to send, to the terminal, signaling that carries the first slot format information, where the first slot format information is used to indicate a symbol for uplink transmission and a symbol for downlink transmission in the first slot; 901. Determine, according to the symbol interval information and the first time slot interval information, a first uplink transmission resource of the terminal.
  • the number of symbols of the interval indicated by the symbol interval information is one of a preset number of sets of symbols.
  • the sending module 902 is further configured to send, to the terminal, the signaling that carries the symbol quantity information, where the symbol quantity information is used to indicate the number of symbols occupied by the terminal for uplink transmission; the processing module 901 is specifically configured to use the The symbol interval information, the first slot format information, and the symbol number information determine a first uplink transmission resource of the terminal.
  • the first uplink transmission resource is located in the first time slot.
  • the start symbol of the first uplink transmission resource is one of a predefined special symbol set in the first time slot, and the special symbol set is a symbol set in the first time slot that is allowed as the start symbol of the uplink transmission resource.
  • the sending module 902 is further configured to send, to the terminal, signaling that carries the threshold information, where the threshold information is used to indicate that the terminal receives the downlink data and the feedback ACK/NACK. The maximum number of symbols between the intervals.
  • the sending module 902 is further configured to send, to the terminal, the signaling that carries the offset information, where the offset information is used to indicate the number of symbols that the terminal offsets the first uplink transmission resource; the processing module 901 is configured to use the The offset information, the first uplink transmission resource, and the second uplink transmission resource of the terminal are determined.
  • the sending module 902 is further configured to send, to the terminal, signaling that carries the second slot format information, where the second slot format information is used to indicate a symbol that is allowed to be uplinked in the second time slot; the processing module 901 is specifically configured to: Determining, according to the offset information, the first uplink transmission resource and the second slot format information, the second uplink transmission resource of the terminal; the second uplink transmission resource is located in the second time slot.
  • the embodiment of the present application provides a chip.
  • the chip includes: at least one communication interface, at least one processor.
  • the chip also includes at least one memory as necessary.
  • the communication interface, the processor and the memory are interconnected by a circuit (in some cases, a bus), and the processor calls an instruction transmitted by another communication device or an instruction stored in the memory to execute the terminal or the network device executed in FIG. Methods. Therefore, the chip can be used for terminals as well as for network devices.
  • the embodiment of the present application provides a terminal.
  • the terminal device includes: a memory and a processor.
  • the memory is used to store program instructions
  • the processor is used to call program instructions in the memory to implement the functions of the terminal in FIG. 2.
  • the embodiment of the present application provides a network device.
  • the network device includes: a memory and a processor.
  • the memory is used to store program instructions
  • the processor is used to call program instructions in the memory to implement the functions of the network device in FIG.
  • Embodiments of the present application provide a non-volatile storage medium in which one or more program codes are stored.
  • program code When the program code is executed, related method steps performed by the terminal of FIG. 2 or related method steps performed by the network device may be completed.
  • the computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
  • the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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

Abstract

La présente invention porte, selon un mode de réalisation, sur un procédé permettant de déterminer des ressources de transmission en liaison montante. Le procédé comprend les étapes suivantes : un terminal reçoit une signalisation comportant des informations d'intervalle de symbole, les informations d'intervalle de symbole étant utilisées pour indiquer un certain nombre de symboles dans l'intervalle allant de la fin d'une transmission en liaison descendante au début de la transmission en liaison montante du terminal ; le terminal reçoit une signalisation comportant des premières informations de format de créneau temporel, les premières informations de format de créneau temporel étant utilisées pour indiquer la distribution de symboles utilisés pour une transmission en liaison montante et de symboles utilisés pour une transmission en liaison descendante pendant un premier créneau temporel ; le terminal détermine une première ressource de transmission en liaison montante du terminal en fonction des informations d'intervalle de symbole et des premières informations d'intervalle de créneau temporel, le nombre de symboles dans un intervalle tel qu'indiqué par les informations d'intervalle de symbole étant un nombre parmi un ensemble de nombres de symboles prédéfinis.
PCT/CN2018/099494 2017-08-11 2018-08-09 Procédé, terminal et dispositif de réseau permettant de déterminer des ressources de transmission en liaison montante WO2019029588A1 (fr)

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CN111867075B (zh) * 2019-04-30 2023-11-21 华为技术有限公司 侧行链路的传输资源的处理方法和装置
CN111557113B (zh) * 2020-04-07 2023-09-19 北京小米移动软件有限公司 传输数据的指示方法、装置、通信设备及存储介质

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