WO2019010808A1 - 传输控制方法及装置 - Google Patents

传输控制方法及装置 Download PDF

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Publication number
WO2019010808A1
WO2019010808A1 PCT/CN2017/101310 CN2017101310W WO2019010808A1 WO 2019010808 A1 WO2019010808 A1 WO 2019010808A1 CN 2017101310 W CN2017101310 W CN 2017101310W WO 2019010808 A1 WO2019010808 A1 WO 2019010808A1
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Prior art keywords
symbol
carried
indication
tail
numerology
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PCT/CN2017/101310
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English (en)
French (fr)
Inventor
杜振国
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华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201780089642.5A priority Critical patent/CN110521257B/zh
Priority to US16/629,001 priority patent/US11240798B2/en
Priority to EP17917413.1A priority patent/EP3627922B1/en
Publication of WO2019010808A1 publication Critical patent/WO2019010808A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • 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
    • 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
    • H04L5/0078—Timing of allocation
    • 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
    • H04W72/20—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

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a transmission control method and apparatus.
  • the data transmitted by the media access control (MAC) layer to the physical layer must be able to fill the allocated physical layer transmission resources.
  • the minimum unit of the physical layer transmission is a resource block pair (RB pair)
  • the data transmitted by the MAC layer to the physical layer needs to fill all the RB pairs, because the size of the data to be transmitted by the upper layer is not It is determined that when the data to be transmitted cannot fill the allocated transmission resources, the MAC layer is required to add an extra redundant portion at the end of the data to be transmitted.
  • the resource minislot (mini -slot)
  • OFDM orthogonal frequency division multiplexing
  • the number of symbols to be filled is much more than that of the traditional communication system, which leads to more serious waste of resources caused by MAC layer filling; on the other hand, NR has high reliability and low latency service (ultra-reliable and The URLLC data transmission in low latency communications (URLLC) must be transmitted in the shortest possible time. For the same amount of data, the shorter the transmission duration, the wider the required frequency domain bandwidth, which results in the resources contained in each OFDM symbol.
  • the number of resource elements (RE) is more. In order to fill the MAC data with all physical layer OFDM symbols, more redundant data needs to be filled.
  • Embodiments of the present application provide a transmission control method and apparatus to solve the problem that a MAC layer is filled with redundant data when data is transmitted in an OFDM system (such as a 5G NR system).
  • an OFDM system such as a 5G NR system
  • the embodiment of the present application provides a transmission control method, which is applied to an Orthogonal Frequency Division Multiplexing (OFDM) system, where the method includes: a first device generates transmission control information, where the transmission control information includes resource indication information, a compression indication, and a An indication, wherein the resource indication information is used to indicate a transmission resource allocated by the first device to the second device, where the transmission resource includes at least two symbols, the compression indication is used to indicate a parameter set of a specific symbol in the transmission resource.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the specific symbol includes a tail symbol and/or a second symbol, where the last symbol is the last symbol in the transmission resource, and the second symbol is a symbol of all transmission demodulation reference signals DMRS in the transmission resource, and the second symbol includes At least one symbol, the first indication is used to indicate a Numerology of a symbol other than the specific symbol in the transmission resource; the first device sends the transmission control information to the second device.
  • the first device generates transmission control information, and sends the transmission control information to the second device.
  • the second device may determine the allocated transmission resource by using the resource indication information, determine a Numerology of the specific symbol in the transmission resource according to the compression indication, and determine a Numerology of the symbol except the specific symbol according to the first indication.
  • the first device can flexibly and reasonably configure the transmission resource according to the actual requirement of the amount of data to be transmitted, and the first device and the second device transmit data according to the transmission resource, and reduce the MAC layer filling by using the same transmission resource as the Numerology of each symbol. Redundant data and / or shortened the symbol length of the transmission DMRS, thereby saving transmission resources.
  • the first device sends data to the second device or receives data from the second device, where the specific symbol in the transmission resource uses the Numerology indicated by the compression indication.
  • the symbol other than the specific symbol in the transmission resource adopts the Numerology indicated by the first indication.
  • the first device may send data to the second device on the transmission resource allocated by the first device for the second device, or receive data sent by the second device, because the transmission resource uses the Numerology in the compression indication, Transmitting data over the transmission resource can save transmission resources.
  • the specific symbol includes only the tail symbol, and the compression indication is used to indicate the Numerology of the tail symbol.
  • the specific symbol includes only the second symbol, and the compression indication is used to indicate a Numerology of the second symbol.
  • the specific symbol includes the tail symbol and the second symbol
  • the compression indication is used to indicate a Numerology of the tail symbol and a Numerology of the second symbol.
  • the Numerology of the second symbol includes a subcarrier spacing of the second symbol, and the subcarrier spacing of the second symbol is an integer multiple of a subcarrier spacing of the first symbol, where the first symbol is The symbol of the transmission resource that is not the specific symbol.
  • the subcarrier spacing of the second symbol may be determined to be an integer multiple of the subcarrier spacing of the first symbol, and the DMRS signal is transmitted according to the determined subcarrier spacing of the second symbol.
  • the symbol length of the transmitted DMRS can be reduced on the domain, which saves transmission overhead.
  • the Numerology of the tail symbol includes a subcarrier spacing of the tail symbol, and the subcarrier spacing of the tail symbol is an integer multiple of the subcarrier spacing of the first symbol.
  • N 1 represents the subcarrier spacing of the first symbol
  • N 2 represents the subcarrier spacing of the tail symbol
  • n is a positive integer.
  • the above formula can be used to determine the number of valid data maps that can be filled in the tail symbol, so that the number of redundant complex numbers that need to be filled in the tail symbol can be determined, and the redundant complex number that needs to be filled in the tail symbol The number is greater than or equal to half of the number of REs in the first symbol.
  • the number of the valid data that can be filled in the tail symbol and the number of subcarriers of the first symbol can be The number determines the subcarrier spacing of the tail symbols in the transmission resource.
  • N 1 represents the subcarrier spacing of the first symbol
  • N 2 represents the subcarrier spacing of the tail symbol
  • n is a positive integer.
  • the above formula can be used to determine the number of valid data maps that can be filled in the tail symbol in the case where the third symbol exists in the transmission resource, so that the number of redundant complex numbers that need to be filled in the tail symbol can be determined. If the number of redundant complexes to be padded in the tail symbol is greater than or equal to half of the number of REs in the first symbol, it may be determined that the tail symbol is a specific symbol, and the number of valid data maps that can be filled according to the tail symbol is plural. And the number of subcarriers of the first symbol determines a subcarrier spacing of the tail symbols in the transmission resource, thereby implementing compression of the tail symbols in the time domain.
  • the Numerology of the specific symbol includes a cyclic prefix CP length
  • the CP length T 1 of the specific symbol is a formula based on the first device. Determining, wherein T is a CP length of the first symbol, and N i is a subcarrier spacing of the specific symbol. Based on this scheme, the CP length for determining a particular symbol can be achieved by the above formula.
  • the first device sends the transmission control information to the second device, where the first device carries the resource indication information, the compression indication, and the first indication in the same message or different messages.
  • the middle is sent to the second device.
  • the first device may be flexibly selected to notify the second device.
  • the first indication may be carried in the downlink control information DCI, carried in the media access control layer control element MAC CE, carried in the main system information block MIB, carried in the system information block SIB, and carried In the broadcast message, it is carried in the radio resource control RRC signaling, carried in the group common downlink control information group common DCI or carried in the physical header of the transmission frame.
  • the first indication may be flexibly selected in the bearer message or signaling according to the scenario actually used.
  • the compression indication when a specific symbol includes only a tail symbol, or the specific symbol includes a tail symbol and a second symbol, the compression indication is carried in the DCI or carried in a physical header of the transmission frame; when the specific symbol is only When the second symbol is included, the compression indication is carried in the DCI, carried in the MAC CE, carried in the MIB, carried in the SIB, carried in the RRC signaling, carried in the group common DCI or carried in the physical header of the transmission frame in. Based on the solution, the compression indication can flexibly select the bearer signaling or message according to the scenario actually used.
  • a transmission control method which is applied to an Orthogonal Frequency Division Multiplexing (OFDM) system, the method includes: receiving, by a second device, transmission control information sent by a first device, where the transmission control information includes resource indication information, and a compression indication And a first indication, where the resource indication information is used to indicate a transmission resource allocated by the first device to the second device, where the transmission resource includes at least two symbols, where the compression indication is used to indicate a specific symbol in the transmission resource.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the specific symbol includes a tail symbol and/or a second symbol, where the last symbol is the last symbol in the transmission resource, and the second symbol is a symbol of all transmission demodulation reference signals DMRS in the transmission resource, the The second symbol includes at least one symbol, the first indication is used to indicate a Numerology of a symbol other than the specific symbol in the transmission resource; the second device determines the transmission resource according to the resource indication information, and determines the transmission according to the compression indication Numerology of a specific symbol in the resource, determining the transmission resource according to the first indication Numerology except for specific symbols.
  • the second device may determine the allocated transmission resource by using the resource indication information, determine a Numerology of the specific symbol in the transmission resource according to the compression indication, and determine a Numerology of the symbol other than the specific symbol according to the first indication.
  • the transmission resource indicated by the transmission control information may be flexibly and reasonably configured by the first device according to the amount of data to be transmitted, and the second device may reduce the padding in the tail symbol according to the transmission resource of the transmission resource and the same transmission resource as the Numerology of each symbol. Redundant data and / or shorten the length of time that DMRS is transmitted in the transmission resource, thereby saving transmission resources.
  • the second device sends data to the first device or receives data from the first device, where the specific symbol in the transmission resource uses the Numerology indicated by the compression indication.
  • the symbol other than the specific symbol in the transmission resource adopts the Numerology indicated by the first indication.
  • the second device may send data to the first device on the transmission resource allocated by the first device for the second device, or receive data sent by the first device, because the transmission resource uses the Numerology in the compression indication, Transmitting data over the transmission resource can save transmission resources.
  • the second device receives the transmission control information sent by the first device, where the second device receives the resource indication information sent by the first device, and the compression indication is the same as the first indication Message or different message. Based on the solution, the second device may receive the resource indication information, the compression indication, and the same message that is carried by the first indication or a different message, and may enable the second device to flexibly receive the transmission control information sent by the first device.
  • the specific symbol includes only the tail symbol, and the compression indication is used to indicate the Numerology of the tail symbol.
  • the specific symbol includes only the second symbol, and the compression indication is used to indicate the Numerology of the second symbol.
  • the specific symbol includes a tail symbol and a second symbol
  • the compression indication is used to indicate the Numerology of the tail symbol and the Numerology of the second symbol.
  • the Numerology of the second symbol includes a subcarrier spacing of the second symbol, and the subcarrier spacing of the second symbol is an integer multiple of a subcarrier spacing of the first symbol, where the first symbol is A symbol in a transmission resource that is not the specific symbol.
  • the Numerology of the tail symbol includes a subcarrier spacing of the tail symbol, and the subcarrier spacing of the tail symbol is an integer multiple of the subcarrier spacing of the first symbol.
  • the second device receives the transmission control information sent by the first device, where the second device receives the resource indication information sent by the first device, the compression indication, and the first indication is carried in the same message or different messages. in. Based on the scheme, the second device can be caused to receive the resource indication information, the compression indication, and the first indication from the same message or different messages.
  • the first indication may be carried in the downlink control information DCI, carried in the media access control layer control element MAC CE, carried in the main system information block MIB, and carried in the system information block SIB.
  • the bearer is carried in the broadcast message, carried in the radio resource control RRC signaling, carried in the group common downlink control information group common DCI or carried in the physical header of the transmission frame.
  • the first indication received by the second device may be used by the first device to flexibly select the bearer message or signaling according to the scenario actually used.
  • the compression indication is carried in the DCI or carried in a physical header of the transmission frame; when the specific symbol includes only the second symbol, the compression indication is carried in the DCI, carried in the MAC CE, carried in the MIB, carried in the SIB, carried in the RRC signaling, carried in the group common DCI or carried In the physical header of the transmission frame.
  • the second device can obtain a compression indication from different signaling or messages.
  • the embodiment of the present application provides a frame format of a transmission frame, where a physical header of the transmission frame format is used to carry a compression indication and/or a first indication.
  • the embodiment of the present application provides a first device, where the first device has a function of implementing terminal behavior in the foregoing method.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the embodiment of the present application provides a second device, where the second device has a function of implementing terminal behavior in the foregoing method.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • an embodiment of the present application provides a first device, including: a processor, a memory, and a communication interface; the memory is configured to store a computer execution instruction, and when the first device is running, the processor executes the memory storage The computer executes instructions to cause the first device to perform the transmission control method described in the above aspects.
  • an embodiment of the present application provides a second device, including: a processor, a memory, and a communication interface; the memory is configured to store a computer execution instruction, and when the second device is running, the processor executes the memory storage The computer executes instructions to cause the second device to perform the transmission control method described in the above aspects.
  • an embodiment of the present application provides a computer readable storage medium having instructions stored therein that, when run on a computer, cause the computer to perform the transmission control method described in the above aspects.
  • an embodiment of the present application provides a computer program product comprising instructions that, when executed on a computer, cause the computer to perform the transmission control method described in the above aspects.
  • FIG. 1 is a schematic structural diagram of an RB pair according to an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of a MAC layer frame structure according to an embodiment of the present disclosure.
  • FIG. 3 is a schematic structural diagram of a minislot according to an embodiment of the present disclosure.
  • FIG. 4 is a structural diagram of a transmission control system according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of interaction of a transmission control method according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a third symbol according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of compression of a specific symbol according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of compression of another specific symbol according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of compression of another specific symbol according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of compression of another specific symbol according to an embodiment of the present application.
  • FIG. 11 is a schematic diagram of a transmission resource according to an embodiment of the present application.
  • FIG. 12 is a schematic diagram of a frame format of an 802.11ax according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of a first device according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of still another first device according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of a second device according to an embodiment of the present disclosure.
  • FIG. 16 is a schematic structural diagram of still another second device according to an embodiment of the present disclosure.
  • FIG. 17 is a schematic structural diagram of hardware of a first device according to an embodiment of the present disclosure.
  • FIG. 18 is a schematic structural diagram of hardware of a second device according to an embodiment of the present disclosure.
  • an RB pair is a minimum unit of physical layer resource scheduling, and each RB pair includes two RBs, and each RB includes 12 subcarriers in the frequency domain, and subcarrier spacing between adjacent subcarriers (Subcarrier) Spacing, SCS) is 15 KHz; each RB includes 1 slot in the time domain.
  • CP cyclic prefix
  • NCP normal cyclic prefix
  • each slot includes 6 symbols; and the CP of the symbol is an extended cyclic prefix (extended CP, ECP).
  • ECP extended cyclic prefix
  • FIG. 1 is a schematic structural diagram of an RB pair according to an embodiment of the present disclosure.
  • an RB pair includes 7 symbols in the time domain, which is actually equal to the length of one subframe. That is, 1 ms; each small rectangular box represents a resource element (RE), which represents a symbol in the time domain, and represents a frequency domain resource corresponding to one subcarrier in the frequency domain.
  • RE resource element
  • mini-slot mini-slot
  • the minislot is the smallest unit of physical layer resource scheduling.
  • the minislot can include a variable number of symbols, and can include at least 1 symbol, and the NR can support multiple subcarriers in the frequency domain.
  • FIG. 3 is a schematic structural diagram of a minislot according to an embodiment of the present disclosure.
  • a sub-frame includes four mini-slots, wherein the micro-slot 1 includes three symbols, and the mini-slot 2 includes five symbols and micro-slots.
  • Time slot 3 includes 2 symbols, and mini-slot 4 includes 4 symbols.
  • Microslot 1 is used for UE1 to transmit data
  • minislot 2 is used for UE2 to transmit data
  • minislot 3 is used for UE3 to transmit data
  • minislot 4 is used for UE4 to transmit data.
  • FIG. 2 is a schematic diagram of a MAC layer frame structure according to an embodiment of the present disclosure.
  • the MAC layer frame structure includes a MAC header, a MAC control element, a MAC control element 2, at least one MAC information block, and a padding part. .
  • the padding part is optional.
  • the MAC layer data is just filled with the allocated physical layer transmission resources, no padding is required, that is, there is no padding part.
  • the redundant data is added in the padding portion in the MAC layer frame structure as shown in FIG. 3, so that the MAC layer data just fills up the allocated transmission resources.
  • DMRS Demodulation reference signal
  • the DMRS is used for channel estimation.
  • the DMRS in the time domain occupies an independent symbol, and each RE of the symbol is occupied in the frequency domain, and the device can estimate the channel state of the subcarrier in the transmission resource after receiving the DMRS. .
  • A/B in the embodiment of the present application means or, for example, A/B may represent A or B; “and/or” in the embodiment of the present application is merely an association describing the associated object.
  • the relationship indicates that there may be three kinds of relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately.
  • Multiple means two or more than two.
  • the first device in the embodiment of the present application is a device having a central control function
  • the second device is a device capable of receiving the first device scheduling and indication information.
  • the first device allocates a transmission resource to the second device, and the first device and the second device perform data transmission by using the allocated transmission resource.
  • the first device may be a macro base station, a micro base station, a hotspot (pico), a home base station (femeto), a transmission point (TP), a relay, or an access point (AP); for example,
  • the second device can be a mobile phone, a computer, a wristband, a smart watch, a data card, a sensor, or a station (STA).
  • a side-link that is, a device-to-device (D2D), where the device having the central control function is the first device, and the device capable of receiving the first device scheduling and indication information is the second device
  • D2D device-to-device
  • the base station is the first device and the mobile phone is the second device for the link between the mobile phone and the base station, and the mobile phone is the first device for the link between the mobile phone and the wristband.
  • the bracelet is the second device.
  • FIG. 4 is a structural diagram of a transmission control system according to an embodiment of the present disclosure.
  • the transmission control system includes a base station, UE1, UE2, UE3, and UE4.
  • the base station is the first device
  • the UE1, the UE2, and the UE3 are the second device.
  • the UE3 is the first device
  • the UE4 is the second device. device.
  • FIG. 5 is a schematic diagram of interaction of a transmission control method according to an embodiment of the present application. Including steps S101-S104:
  • the first device generates transmission control information, where the transmission control information includes resource indication information, a compression indication, and a first indication.
  • the resource indication information is used to indicate a transmission resource allocated by the first device to the second device, where the transmission resource includes at least two symbols, and the compression indication is used to indicate a parameter set Numerology of a specific symbol in the transmission resource, where the specific symbol includes a tail symbol and/or Or a second symbol, where the tail symbol is the last symbol in the transmission resource, the second symbol is a symbol in the transmission resource that only transmits the demodulation reference signal DMRS, and the second symbol includes at least one symbol, where the first indication is used to indicate the transmission resource Numerology of symbols outside the specific symbol.
  • the tail symbol in the embodiment of the present application may be the last symbol of the minislot, for example, the third symbol in the minislot 1 allocated to the UE1 in FIG. 3, and the micro time allocated to the UE2.
  • the fifth symbol in slot 2, the second symbol in minislot 3 allocated to UE3, or the fourth symbol in minislot 4 allocated to UE4 is a tail symbol.
  • the first device sends transmission control information to the second device.
  • the second device receives the transmission control information sent by the first device.
  • the second device determines the transmission resource according to the resource indication information, determines a Numerology of the specific symbol in the transmission resource according to the compression indication, and determines, according to the first indication, a Numerology of the symbol except the specific symbol in the transmission resource.
  • the first device generates the transmission control information, and sends the transmission control information to the second device.
  • the second device may determine the allocated transmission resource by using the resource indication information, determine a Numerology of the specific symbol in the transmission resource according to the compression indication, and determine according to the first indication. Numerology of symbols other than specific symbols.
  • the first device can flexibly and reasonably configure the transmission resource according to the actual requirement of the amount of data to be transmitted, and the first device and the second device transmit data according to the transmission resource, and reduce the MAC layer filling by using the same transmission resource as the Numerology of each symbol. Redundant data and / or shortened the symbol length of the transmission DMRS, thereby saving transmission resources.
  • the generating, by the first device, the transmission control information may include steps S101A-S101B:
  • S101A The first device determines a Numerology carried by the first indication.
  • the first indicator of the Numerology includes a subcarrier spacing and/or a CP length of the first symbol, the first symbol is a symbol of a non-specific symbol in the transmission resource, and the first symbol includes at least one symbol, each symbol in the first symbol The same Numerology.
  • the Numerology of the first symbol is a reference Numerology when determining a specific symbol Numerology in the transmission resource, and the Numerology of the first symbol is independent of the data amount of the transmitted data, and the first symbol in the same transmission resource
  • the Numerology of each symbol in the symbol is the same, and the Numerology of the first symbol in the different transmission resources may be the same or different, which is not specifically limited in this embodiment of the present application.
  • the allocated transmission resources include the number of symbols allocated in the time domain and the number of RBs in the frequency domain, wherein the number of REs (ie, the number of subcarriers) is included in the RB.
  • Each RE in the symbol includes a valid data portion and a CP portion, and different carrier intervals cause a change in the duration of the valid data portion.
  • the two devices that transmit data according to the transmission resource determine the CP length and the subcarrier spacing of the RE in each symbol in the transmission resource by using the Numerology carried by the first indication, thereby determining the filling manner in the symbol when transmitting the data, or by transmitting the resource.
  • the CP length and subcarrier spacing of the RE in each symbol determines how the received data is demodulated.
  • the CP length can be determined, or the subcarrier spacing can be determined according to the CP length.
  • the first indication may only carry the CP length of the first symbol or only the subcarrier spacing of the first symbol.
  • the first indication may also carry the CP length indication and the subcarrier spacing indication of the first symbol at the same time.
  • the first device may configure a correspondence between different bandwidth parts (BWPs) and different Numerologies, where the BWP is also referred to as a sub-band.
  • BWP bandwidth parts
  • the first device may determine a target correspondence according to the BWP used by the first device and the second device, and send the target correspondence to the second device.
  • the Numerology of the first symbol indicated by the first indication in the embodiment of the present application may be determined by the first device in the foregoing manner.
  • the first device may determine, according to factors such as the moving speed of the second device and/or the requirement of the current service for the delay, which transmission resource is used, which is equivalent to the Numerology in which the Numerology bound to the transmission resource is the first symbol.
  • a transmission resource on a BWP with a large CP length and a small SCS can be configured; And/or the second device whose service is delay-sensitive, the transmission resource on the BWP with a smaller CP length and a larger SCS can be configured.
  • S101B The first device determines a Numerology of the specific symbol according to the Numerology of the first symbol to obtain a compression indication.
  • the first device may determine the compression indication according to the data volume of the data to be transmitted and the number of REs included in the frequency domain of the first symbol in the transmission resource.
  • the compression indication is used to indicate the Numerology of the tail symbol.
  • the compression indication is used to indicate the Numerology of the second symbol.
  • the compression indication is used to indicate the Numerology of the tail symbol and the Numerology of the second symbol.
  • the compression indication can flexibly carry different Numerology according to different specific symbols.
  • the sub-carrier spacing and/or the CP length of the specific symbol may be directly carried in the compression indication, for example, the sub-carrier spacing of the tail symbol is 30 kHz, and may also carry a compression indication value of a specific symbol, where the compression indication carries
  • the embodiment of the present application does not specifically limit the form carried in the compression indication.
  • the first device determines the subcarrier spacing of the specific symbol
  • the first device determines a subcarrier spacing of the second symbol.
  • the first device determines a Numerology of the second symbol according to the channel flatness, wherein the Numerology of the second symbol includes a subcarrier spacing of the second symbol, and the subcarrier spacing of the second symbol is an integer multiple of the subcarrier spacing of the first symbol.
  • the subcarrier spacing of the first symbol is N 1
  • the subcarrier spacing of the second symbol can be selected as 2 n N 1 , where n is a positive integer.
  • n when the channel is flat in the frequency domain, the value of n can be configured to be larger, and the larger the subcarrier spacing is, the smaller the symbol duration is, and the more transmission overhead is saved.
  • the subcarrier spacing of the second symbol may be 15 kHz ⁇ 2 M + n .
  • T time domain length of each symbol in the first symbol
  • T time domain length of each symbol in the second symbol
  • the transmission control method provided by the embodiment of the present application when the specific symbol is the second symbol, determining that the subcarrier spacing of the second symbol is an integer multiple of the subcarrier spacing of the first symbol, and transmitting according to the determined subcarrier spacing of the second symbol
  • the DMRS signal can reduce the symbol length of the transmitted DMRS in the time domain, saving transmission overhead.
  • the first device determines the subcarrier spacing of the tail symbol
  • the Numerology of the tail symbol includes the subcarrier spacing of the tail symbol, and the subcarrier spacing of the tail symbol is an integer multiple of the subcarrier spacing of the first symbol.
  • U represents the number of complex numbers of the valid data mapping filled in the tail symbol
  • L represents the total number of complex numbers of the valid data mapping
  • V represents the number of subcarriers of the first symbol
  • N 1 represents the subcarrier spacing of the first symbol
  • N 2 represents the subcarrier spacing of the tail symbol
  • n is a positive integer
  • the first device determines a complex number of valid data maps carried in the tail symbols based on equation (1).
  • the first device determines the subcarrier spacing of the tail symbols based on equation (2).
  • the interval is equal to the subcarrier spacing of the first symbol;
  • the RE can compress the tail symbol at this time, and the subcarrier spacing of the tail symbol can be selected among N 1 , 2N 1 , 4N 1 , ... 2 n N 1 .
  • the larger the selected subcarrier spacing, the shorter the duration of the compressed tail symbol, and the more obvious the transmission overhead saving effect. Therefore, when considering the transmission overhead to be minimized, N 2 2 n N 1 saves the most transmission overhead.
  • the first device may determine the total number of the plurality of valid data mappings according to the data amount of the data to be transmitted, where the data to be transmitted may be the data sent by the first device to the second device, or may be received by the first device.
  • the second device sends the data amount of the data to be transmitted to the first device, so that the first device determines the data amount of the data to be transmitted, before the first device receives the second data and sends the data to be transmitted.
  • the second device allocates the transmission resource.
  • the embodiment of the present application does not specifically limit how the first device obtains the data to be transmitted.
  • the formula (1) can determine the complex number of valid data maps filled in the tail symbol, so that the number of redundant complex numbers that need to be filled in the tail symbol can be determined, and the number of redundant complex numbers that need to be filled in the tail symbol is greater than If the number of the REs in the first symbol is equal to the number of the REs in the first symbol, the transmission control method provided in the embodiment of the present application may determine the transmission according to the multiple number of valid data mappings in the tail symbol and the number of subcarriers of the first symbol. In resources The subcarrier spacing of the tail symbol.
  • U is the number of complex numbers of the valid data maps filled in the tail symbol
  • L is the total number of complex numbers of the valid data map
  • V is the number of subcarriers of the first symbol
  • Q is valid in all third symbols.
  • the mixed transmission of the valid data and the DMRS signal indicates that part of the REs in the symbol carry valid data, and part of the RE carries the DMRS signal.
  • the first device determines the complex equivalent number of valid data mappings carried in the tail symbols based on equation (3).
  • the first device determines the subcarrier spacing of the tail symbol based on the above formula (2) after determining the complex equivalent number of valid data mappings carried in the tail symbol.
  • FIG. 6 is a schematic diagram of a third symbol provided by an embodiment of the present application. As shown in FIG. 6, it is assumed that one symbol includes 12 REs, and RE1 to RE12 in order from top to bottom. Wherein, in 6A of FIG. 6, RE1, RE3, RE5, RE7, RE9, and RE11 are used for transmitting data, and RE2, RE4, RE6, RE8, RE10, and RE12 are used for transmitting DMRS signals; in 6B of FIG.
  • RE1 RE3, RE4, RE6, RE7, RE9, RE10, and RE12 are used to transmit data, and RE2, RE4, RE8, and RE11 are used to transmit DMRS signals; in 6C of FIG. 6, RE1, RE2, RE4, RE5, RE6, and RE8 RE9, RE10, and RE12 are used to transmit data, and RE3, RE7, and RE11 are used to transmit DMRS signals; in 6D of FIG. 6, RE1, RE2, RE3, RE5, RE6, RE7, RE8, RE10, RE11, and RE12 are used. Transmitting data, RE4 and RE9 are used to transmit DMRS signals; in 6E of FIG. 6, RE1, RE4, RE5, RE8, RE9 and RE12 are used for transmitting data, and RE2, RE3, RE6, RE7, RE10 and RE11 are used for transmitting data. .
  • the symbols used for the hybrid transmission in the transmission resource may be mixed and transmitted with the DMRS signal in any manner as shown in FIG. 6, which is not specifically limited in this embodiment of the present application.
  • the formula (3) can determine the number of valid data maps that can be filled in the tail symbol in the case where the third symbol exists in the transmission resource, so that the number of redundant complex numbers that need to be filled in the tail symbol can be determined. If the number of redundant complexes to be padded in the tail symbol is greater than or equal to half of the number of REs in the first symbol, it can be determined that the tail symbol is a specific symbol, and the number and the number of the valid data maps that can be filled in the tail symbol are The number of subcarriers of a symbol determines the subcarrier spacing of the tail symbols in the transmission resource, thereby implementing compression of the tail symbols in the time domain.
  • the subcarrier spacing of each layer stream is the same, so the number of complex data maps that can be filled in the tail symbols in each layer stream is complex.
  • U can be determined according to the above formula (1) or formula (3), so that each layer of the tail symbol can be determined according to formula (2)
  • Subcarrier spacing and then determining the subcarrier spacing of each layer stream in the MIMO system according to the subcarrier spacing of each layer stream and equation (4).
  • N 2,1 represents a set of subcarrier spacings of the tail symbols in the first layer stream
  • N 2,2 represents a set of subcarrier spacings of the tail symbols in the second layer stream
  • N 2,3 represents the tail symbols in the third layer stream A collection of subcarrier spacing
  • the Numerology of a specific symbol includes a cyclic prefix CP length, and the CP length T 1 of a specific symbol is determined by the first device based on the formula (5).
  • T is the first symbol CP length
  • N i is the subcarrier spacing specific symbol.
  • the CP length of the first symbol can be determined according to the CP type.
  • CP length of the tail symbol and the CP length of the second symbol can be determined according to formula (5).
  • the CP length of the specific symbol can be determined by the formula (5).
  • the first device and the second device respectively store a correspondence between the same compression indication value and the specific symbol Numerology.
  • the first device After the first device determines the transmission resource according to the data to be transmitted, the first device sends a compression indication value corresponding to the subcarrier spacing of the current specific symbol to the second device; the second device determines, according to the compression indication value, after receiving the compression indication.
  • the subcarrier spacing of a particular symbol in a transmission resource After the first device determines the transmission resource according to the data to be transmitted, the first device sends a compression indication value corresponding to the subcarrier spacing of the current specific symbol to the second device; the second device determines, according to the compression indication value, after receiving the compression indication.
  • the subcarrier spacing of a particular symbol in a transmission resource After the first device determines the transmission resource according to the data to be transmitted, the first device sends a compression indication value corresponding to the subcarrier spacing of the current specific symbol to the second device; the second device determines, according to the compression indication value, after receiving the compression indication.
  • the subcarrier spacing of a particular symbol in a transmission resource After the first device determines the transmission
  • the number of symbols in the transmission resource is an integer multiple of the first symbol (ie, the reference symbol).
  • the second symbol in the allocated transmission resource includes the symbols of the K transmission DMRSs, combined with the tail symbol compression, up to K symbols of the first symbol length may be saved; wherein, when K is greater than 1, the length of the compression indication is greater than 1 bit.
  • the first device may determine the length of the time domain of the specific symbol according to the relationship between the frequency domain and the time domain, so that the allocated transmission resource may be determined. The total length of time in which the symbol is occupied.
  • the second symbol in the transmission resource only contains one symbol, which is recorded as DMRS symbol 1, and the first carrier uses a subcarrier spacing of N 1 , and the base station determines that the DMRS symbol 1 can be compressed for at least half of the time in the time domain.
  • the symbol can also be compressed for at least half of the time in the time domain, that is, both the tail symbol and the DMRS symbol 1 can adopt a subcarrier spacing greater than or equal to N 1 .
  • the first device and the second device are pre-configured with the compression indication comparison table as shown in Table 1.
  • the compression indication sent by the first device carries a compression indication value of 0
  • the tail symbol and the DMRS symbol 1 are not compressed.
  • the compression indication value carried by the compression indication is 1, the time domain length indicating the tail symbol is compressed to 1/2 of the first symbol, and the time domain length of the DMRS symbol 1 is compressed to 1/2 of the first symbol. That is to say, the subcarrier spacing of the tail symbol and the DMRS symbol 1 is twice the interval of the first symbol subcarrier.
  • the number of symbols of the transmission resource obtained by the compression in the embodiment of the present application is described by using an integer of the first symbol as an example.
  • the symbol data of the compressed transmission resource in the embodiment of the present application may also be used.
  • the compression obtains 0.5 symbols or 0.25 symbols
  • the allocated transmission resource symbol may be 2.5 symbols or 2.25 symbols, which is not specifically limited in the embodiment of the present application.
  • the second symbol in the transmission resource includes 2 symbols, which are DMRS symbol 1, DMRS symbol 2, and the compression indication requires 3 bits to be able to represent different compression situations.
  • Table 2 there are 7 compression methods.
  • the compression indication value is 000, indicating that both the tail symbol and the DMRS symbol are not compressed.
  • the saved symbol length is 0 lengths of the first symbol;
  • the compression indication value is 001 indicating that the tail symbol is not compressed, the DMRS symbol 2 and the DMRS
  • the symbol 1 is compressed to 1/2 of the length of the first symbol.
  • the saved symbol length is the length of one first symbol;
  • the compression indication value is 010, indicating that the tail symbol is compressed to 1/2 of the first symbol length.
  • DMRS symbol 2 is not compressed, DMRS symbol 1 is compressed to 1/2 of the first symbol length, and in the time domain, the saved symbol length is the length of one first symbol;
  • the compression indication value is 011 indicating that the tail symbol is compressed into the first symbol 1/2 of the length, DMRS symbol 2 is compressed to 1/2 of the first symbol length, DMRS symbol 1 is not compressed, and in the time domain, the saved symbol length is the length of 1 first symbol;
  • the compression indication value is 100 indicates the tail The symbol is compressed to 1/2 of the first symbol length, the DMRS symbol 2 is compressed to 1/4 of the first symbol length, the DMRS symbol 2 is compressed to 1/4 of the first symbol length, and in the time domain, the saved symbol length is 2 The length of the first symbol;
  • the compression indication value is 101 for the trailing character The number is compressed to 1/4 of the first symbol length, DMRS symbol 2 is compressed to 1/2 of the first symbol length, DMRS symbol 2 is compressed to 1/4 of the first symbol length, and in the time domain, the saved symbol length is 2 The length of
  • n is a positive integer, and may be compressed by other values. This is not specifically limited.
  • the first device sends the resource indication information, the compression indication, and the first indication to the second device in the same message or different messages.
  • the first device may be flexibly selected to notify the second device.
  • the second device may be caused to receive the resource indication information, the compression indication, and the first indication from the same message or different messages.
  • the first indication may be carried in downlink control information (DCI), carried in a media access control layer control element (MAC CE), and carried in a master information block (master information block).
  • DCI downlink control information
  • MAC CE media access control layer control element
  • master information block master information block
  • MIB carried in the system information block (SIB)
  • SIB system information block
  • RRC radio resource control
  • group common DCI group common downlink control information
  • the first indication may be flexibly selected in the bearer message or signaling according to the scenario actually used.
  • the compression indication is carried in the DCI or carried in the physical header of the transmission frame.
  • the compression indication may flexibly select the bearer carrier according to the scenario actually used.
  • the compression indication may be carried in the DCI, carried in the MAC CE, carried in the MIB, carried in the SIB, carried in the broadcast message, carried in the RRC signaling, It is carried in the group common DCI or in the physical header of the transmission frame.
  • the compression indication and the first indication may be respectively sent according to the following combination.
  • the compression indication may be carried by physical layer signaling (eg, carried on a physical downlink control channel (physical downlink control channel) The DCI in the channel, PCDDH); or, when the first indication is carried in the group common group common DCI, the compression indication may be carried in the DCI.
  • the DCI of the compression indication bearer is the DCI of each UE.
  • the compression indication may be carried in the same message as the first indication, for example, the compression indication and the first indication are carried in the DCI.
  • FIG. 7 is a schematic diagram of compression of a specific symbol provided by the embodiment of the present application.
  • the first device may determine the duration of transmission of symbol 3 in the time domain.
  • the first device allocates a transmission resource as shown by 7B in FIG. 7 , and the transmission resource includes three symbols, namely, symbol 1, symbol 2, and symbol 4 (tail symbol), where , symbol 1 and symbol 2 are the first symbol, the transmission duration of symbol 4 in the time domain is 1/2 of the transmission duration of the first symbol, and 6 subcarriers are included in the frequency domain, and the subcarrier spacing is twice the first symbol.
  • . 7C in FIG. 7 is a first indication and a compression indication determined by the first device.
  • the first indication is used to indicate the Numerology of the first symbol (including symbol 1 and symbol 2), and the compression indication is used to indicate the Numerology of the tail symbol (symbol 4).
  • the first indication and the compressed indication may be carried in the same downlink message, or may be carried in different downlink messages.
  • the first symbol in the embodiment of the present application is only an exemplary description. In the actual application, the first symbol Numerology may also be other values. The specific value of the Numerology of the first symbol is not specific to the embodiment of the present application. limited.
  • FIG. 8 is a schematic diagram of compression of a specific symbol provided by the embodiment of the present application.
  • the first device determines that the duration of transmission of symbol 1 in the time domain becomes 1/2 of the duration of the first symbol.
  • the first device allocates a transmission resource as shown in FIG. 8B, and includes three symbols, namely, symbol 4, symbol 2, and symbol 3.
  • the transmission duration of symbol 4 in the time domain is 1/ of the first symbol transmission duration. 2.
  • 8C in FIG. 8 is a first indication and a compression indication determined by the first device.
  • the first indication is used to indicate a Numerology of the first symbol (including the symbol 2 and the symbol 3), and the compression indication is used to indicate a Numerology of the second symbol (including the symbol 4), wherein the first indication and the compression indication may be carried in the same In the downlink message, it can also be carried in different downlink messages.
  • FIG. 9 is a schematic diagram of compression of a specific symbol provided by an embodiment of the present application.
  • 9A in FIG. 9 is three first symbols (ie, reference symbols) determined by the first device according to the data amount of data to be transmitted, and are respectively recorded as symbol 1, symbol 2, and symbol 3; 1.
  • the first device determines that symbol 1 is the second symbol and determines that symbol 3 (tail symbol) needs to be compressed, the first device determines that symbol 1 and symbol 3 are specific symbols.
  • the first device determines that the duration of transmission of symbol 1 and symbol 3 in the time domain becomes the first 1/2 of a symbol duration.
  • the first device allocates a transmission resource as shown by 9B in FIG. 9, and includes three symbols, which are symbol 4 (second symbol), symbol 2 (first symbol), and symbol 5 (tail symbol), symbol 2 and symbol. 5
  • the transmission duration in the time domain is 1/2 of the transmission duration of the first symbol, and 6 subcarriers are included in the frequency domain, and the subcarrier spacing is twice the subcarrier spacing of the first symbol.
  • 9C in FIG. 9 is a first indication and a compression indication determined by the first device.
  • the first indication is used to indicate a Numerology of the first symbol (including the symbol 2)
  • the compression indication is used to indicate a Numerology of the second symbol (including the symbol 4 and the symbol 5), wherein the first indication and the compression indication may be carried in the same downlink
  • the message can also be carried in different downlink messages. Numerology of symbol 4 and symbol 5 in the compression indication may also be carried in different downlink messages.
  • FIG. 10 is a schematic diagram of compression of a specific symbol according to an embodiment of the present application.
  • the transmission resource includes three symbols, and a specific symbol exists in the transmission resource, and transmission control is required. When the symbol duration is unchanged, the result is as shown in FIG. 10B.
  • Transmission resource the transmission resource has a longer symbol length for transmitting valid data in the time domain than the transmission resource of 10A in FIG. 10, and the transmission resource can be improved. Source utilization.
  • FIG. 11 is a schematic diagram of a transmission resource according to an embodiment of the present application. Among them, FIG. 11A shows that 4 symbols are included, each symbol includes 12 REs, and in the worst case, 11 REs need to be filled. It is assumed that in the URLLC service, the transmission needs to be completed in the shortest possible time, the transmission resource shown in FIG. 11B can be used, including 2 symbols, and each symbol includes 24 REs.
  • the tail control symbol can be compressed according to the transmission control method provided by the embodiment of the present application, so that the padded redundant data can be reduced, and the utilization rate of the transmission resource is improved.
  • step S104 the foregoing method further includes steps S105-S106 or 105a-106b:
  • the first device sends data to the second device on the transmission resource.
  • the specific symbol in the transmission resource adopts the Numerology indicated by the compression indication, and the symbols other than the specific symbol in the transmission resource adopt the Numerology indicated by the first indication.
  • the second device receives data from the first device on the transmission resource.
  • the first device receives data from the second device on the transmission resource.
  • the second device sends data to the first device on the transmission resource.
  • the transmission control method provided by the embodiment of the present application can implement transmission of data on a transmission resource, where the transmission resource is a symbol that is compressed after a specific symbol, and avoids adding excessive redundant data or transmitting too much non-transmission when transmitting data. Effective data, which saves on transmission overhead.
  • the transmission control method in the embodiment of the present application is applicable to various communication systems based on OFDM, including a mobile communication system and a wireless local area networks (WLAN) system.
  • the WLAN system is a system based on the 802.11 standard protocol, which uses radio frequency (RF) technology to communicate in the air through electromagnetic waves.
  • RF radio frequency
  • the two devices can implement the functions of the first device and the second device. For example, when the UE communicates with the AP, when the UE sends data to the AP, the UE is the first device, and the AP is the second device; When the AP sends the message to the UE, the UE is the second device, and the AP is the first device. This embodiment of the present application does not specifically limit this.
  • the transmission control method of the embodiment of the present application may transmit a symbol of a long training field (LTF) and/or a data field in a transmission frame in a physical header in a transmission frame.
  • the tail symbol is used for transmission control.
  • the long training domain may include high throughput-long term evolution (HT-LTE) in 802.11n, very high throughput-long training domain in 802.11ac (very high throughput-LTF) , VHT-LTF), high throughput-long training-domain (HE-LTF) in 802.11ax.
  • HTTP high throughput-long term evolution
  • 802.11ac very high throughput-long training domain
  • VHT-LTF very high throughput-LTF
  • HE-LTF high throughput-long training-domain
  • the role of these fields is similar to the DMRS in the mobile communication system, and is used for channel estimation.
  • the symbols in the above domain may be compressed by using the transmission control method in the embodiment of the present application.
  • the Numerology for determining the tail symbol of the data field may refer to the Numerology determining method of the tail symbol in the foregoing transmission resource.
  • the number of valid complex values filled in the tail symbols of the data field is determined, wherein the number of valid complex values filled in the tail symbols of the data field, that is, U determined according to the above formula (1) or (3).
  • the subcarrier spacing of the tail symbols of the data field is determined according to the number of complex values filled in by the tail symbols of the data field, that is, N 2 is determined according to the above formula (2).
  • N 2 is determined according to the above formula (2).
  • the first indication may be carried in a signaling domain (SIG).
  • SIG signaling domain
  • the second device does not need the first indication to determine the Numerology of the first symbol.
  • the compression indication is generated by the first device and carried in the physical header of the transmission frame to the second device.
  • the first device carries the compression indication in the SIG of the physical header.
  • the subcarrier spacing of other symbols except the tail symbol in the data domain is the subcarrier spacing of the reference symbol, and the CP length is variable
  • the first indication may also be carried in the SIG domain.
  • the compression indication and the first indication in the embodiment of the present application may be carried in the frame structure of the 802.11ax, and the frame format of the 802.11ax provided in the embodiment of the present application includes: a traditional-short training domain ( Legacy-short training field (L-STF), legacy-long training field (L-LTF), legacy signaling domain (L-SIG), RL signaling domain (RL-signal) , RL-SIG), high efficiency-signal-A (HE-SIG-A), high efficiency-short training field (HE-STF), high efficiency - a high efficiency-long training field (HE-LTF) and a data field; wherein the parts other than the data field may be collectively referred to as a physical header part, the data field includes N symbols, and N is a positive integer, this application
  • the tail symbols in the embodiment may also include the tail symbols of the data fields.
  • the compression indication and the first indication may be carried in the HE-SIG-A domain of the physical header of the transmission frame.
  • the compression indication may indicate a Numerology that transmits the symbols of the HE-LTF. This embodiment of the present application does not specifically limit this.
  • a CP portion and a data portion of each symbol in a transmission frame are independent of each other, and the CP portion does not affect the duration of the data portion.
  • the subcarrier spacing of symbols other than the tail symbol in the data field is usually fixed at 78.125 kHz, and the CP length in the data domain may be 0.8 ⁇ s, 1.6 ⁇ s, or 3.2 ⁇ s.
  • the subcarrier spacing of the tail symbol may be an integer multiple of the subcarrier spacing of the symbols other than the tail symbol in the data domain, for example, the subcarrier spacing of the tail symbol may be 78.125 kHz.
  • the CP length of the tail symbol may be 0.8 ⁇ s, 1.6 ⁇ s, or 3.2 ⁇ s.
  • the CP length of the tail symbol of the data field is not specifically limited in the embodiment of the present application.
  • a compression indication is used to indicate a Numerology for transmitting a symbol of a long training domain; when a specific symbol includes only a tail symbol of a data domain, compression is performed. Indicates a Numerology for indicating a tail symbol of the data field; when the specific symbol includes a symbol for transmitting the long training field and a tail symbol for the data field, the compression indication is used to indicate the Numerology of the symbol of the long training field and the tail symbol of the data field Numerology.
  • the transmission overhead in the transmission frame can also be saved, and the resource utilization rate can be improved.
  • the transmission control method provided by the embodiment of the present application may be used for uplink data transmission, downlink data transmission, and data transmission between D2D devices, which is not specifically limited in this embodiment of the present application.
  • the terminal includes a hardware structure and/or a software module corresponding to each function.
  • the present application can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.
  • the embodiment of the present application may divide the function module into the device according to the foregoing method example.
  • each function module may be divided according to each function, or two or more functions may be integrated into one processing module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present application is schematic, and is only a logical function division, and the actual implementation may have another division manner.
  • FIG. 13 shows a possible structural diagram of the first device 1300 involved in the above embodiment.
  • the first device 1300 includes a generating module 131 and a transmitting module 132.
  • the first device further includes a receiving module 133.
  • the generating module 131 is configured to support the first device 1300 to perform steps S101, S101A, and S101B in the foregoing method embodiment;
  • the sending module 132 is configured to support the first device 1300 to perform steps S102 and S105a in the foregoing method embodiment;
  • the first device 1300 is supported to perform step S105 in the above method embodiment. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
  • FIG. 14 shows a possible structural diagram of the first device 1400 involved in the above embodiment.
  • the first device 1400 includes a processing module 141 and a communication module 142.
  • the processing module 141 is configured to support the first device 1400 to perform steps S101, S101A, and S101B of the foregoing method embodiment;
  • the communication module 142 is configured to support steps S102, S105, and S105a in the foregoing method embodiments. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
  • FIG. 15 shows a possible structural diagram of the second device 1500 involved in the above embodiment.
  • the second device 1500 includes a receiving module 151 and a determining module 152.
  • the second device further includes a sending module 153.
  • the receiving module 151 is configured to support the second device 1500 to perform steps S103 and S106 in the foregoing method embodiment;
  • the determining module 152 is configured to support the second device 1500 to perform step S104 in the foregoing method embodiment;
  • the sending module 153 is configured to support the second The device 1500 performs step S106a in the above method embodiment. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
  • FIG. 16 shows a possible structural diagram of the second device 1600 involved in the above embodiment.
  • the second device 1600 includes a processing module 161 and a communication module 162.
  • the processing module 161 is configured to support the second device 1600 to perform step S104 of the foregoing method embodiment
  • the communication module 162 is configured to support the second device 1600 to perform steps S103, S106, and S106a in the foregoing method embodiments. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
  • FIG. 17 is a schematic structural diagram of hardware of a first device according to an embodiment of the present disclosure.
  • the first device 1700 includes at least one processor 1701, a memory 1702, a communication interface 1703, and a communication bus 1704.
  • the processor 1701 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the present application.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • processor 1701 may be configured to support the first device to perform steps S101, S101A, S101B, and/or described in the foregoing method embodiments.
  • Other processes of the technique i.e., processor 1701, may perform all of the steps performed by processing module 1401 shown above in FIG.
  • Communication bus 1704 can include a path for communicating information between the components described above.
  • the communication bus 1704 may be a peripheral component interconnect (PCI) communication bus or an extended industry standard architecture (EISA) communication bus or the like.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the above communication bus 1704 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 17, but it does not mean that there is only one communication bus or one type of communication bus.
  • Communication interface 1703 uses devices such as any transceiver for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (English: wireless local area networks, WLAN) and so on.
  • RAN radio access network
  • WLAN wireless local area networks
  • the communication interface 1703 can be used to support the first device to perform steps S102, S105, S105a, and/or described in the above method embodiments.
  • Other processes of the technique, communication interface 1704, may perform all of the steps performed by communication module 1402 shown above in FIG.
  • the memory 1702 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or may store information and Other types of dynamic storage devices of instructions, or electrically erasable programmable read-only memory (EEPROM), read-only optical discs (English: compact disc read-only memory, CD-ROM) ) or other disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), disk storage media or other magnetic storage devices, or capable of carrying or storing in the form of instructions or data structures.
  • the desired program code and any other medium that can be accessed by the computer but is not limited thereto.
  • the memory can exist independently and be connected to the processor via a bus.
  • the memory can also be integrated with the processor.
  • the memory 1702 is configured to store application code for executing the solution of the present application, and is controlled by the processor 1701 for execution.
  • the processor 1701 is configured to execute the application code stored in the memory 1702, thereby implementing the transmission control method in the embodiment of the present application.
  • the processor 1701 may include one or more CPUs, such as CPU0 and CPU1 in FIG.
  • the first device 1700 can include multiple processors, such as the processor 1701 and the processor 1708 in FIG. Each of these processors can be a single-core (English: single-CPU) processor or a multi-core (English: multi-CPU) processor.
  • a processor herein may refer to one or more devices, circuits, and/or processing cores for processing data, such as computer program instructions.
  • the first device 1700 may further include an output device 1705 and an input device 1706.
  • Output device 1705 is in communication with processor 1701 and can display information in a variety of ways.
  • the output device 1705 can be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projection device. Instrument (English: projector) and so on.
  • Input device 1706 is in communication with processor 1701 and can accept user input in a variety of ways.
  • input device 1906 can be a mouse, keyboard, touch screen device, or sensing device, and the like.
  • the first device 1700 described above may be a general purpose computer device or a dedicated computer device.
  • the first device 1700 can be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, a communication device, an embedded device, or A device of similar construction in Figure 19.
  • PDA personal digital assistant
  • the embodiment of the present application does not limit the type of the first device 1700.
  • FIG. 18 is a schematic structural diagram of hardware of a second device according to an embodiment of the present disclosure.
  • the second device 1800 includes one or more processors 1801, a memory 1802, a communication interface 1803, and a bus 1804.
  • processors 1801, the memory 1802, the communication interface 1803, and the bus 1804, etc. reference may be made to the description of the first device 1700, and details are not described herein.
  • processor 1801 may be configured to support the second device to perform step S104 in the foregoing method embodiment and/or for the technology described in the present application.
  • Other processes, i.e., processor 1801 may perform all of the steps performed by processing module 1602 shown above in FIG.
  • the communication interface 1803 can be used to support the second device to perform steps S103, S106, S106a, and/or described in the above method embodiments.
  • Other processes of the technique, communication interface 1803, may perform all of the steps performed by communication module 1602 shown above in FIG.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • a software program it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are generated in whole or in part.
  • 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 Transmission 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 that includes one or more servers, data centers, etc. that can be integrated with the 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)) or the like.
  • a magnetic medium eg, a floppy disk, a hard disk, a magnetic tape
  • an optical medium eg, a DVD
  • a semiconductor medium such as a Solid State Disk (SSD)

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Abstract

本申请实施例提供传输控制方法及设备，应用于正交频分复用OFDM系统。该方法包括：第一设备生成传输控制信息，该传输控制信息包括资源指示信息、压缩指示和第一指示；其中，该资源指示信息用于指示该第一设备为第二设备分配的传输资源，该传输资源包括至少两个符号，该压缩指示用于指示该传输资源中特定符号的参数集Numerology，该特定符号包括尾符号和/或第二符号，该尾符号为该传输资源中最后一个符号，该第二符号为该传输资源中全部传输解调参考信号DMRS的符号，该第二符号包括至少一个符号，该第一指示用于指示该传输资源中除该特定符号之外的符号的Numerology；该第一设备向第二设备发送该传输控制信息。

Description

传输控制方法及装置
本申请要求于2017年7月12日提交中国专利局、申请号为201710566562.6、发明名称为“一种降低传输开销的方法和设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及传输控制方法及装置。
背景技术
通常，媒体访问控制(media access control，MAC)层传输给物理层的数据必须恰好能够填满所分配的物理层传输资源。在传统蜂窝通信系统中，物理层传输的最小单位是资源块对(resource block pair，RB pair)，MAC层传输给物理层的数据需要填满所有RB pair，由于上层需要传输的数据大小是不确定的，当要传输的数据不能填满所分配的传输资源的情况下，需要MAC层在待传输数据尾部添加额外的冗余部分。
在基于正交频分复用(orthogonal frequency division multiplexing，OFDM)的第五代移动通信(5-Generation，5G)新空口(new radio，NR)系统中，一方面，以资源微时隙(mini-slot)作为资源调度的基本单位，需要填充的符号数远多于传统通信系统，导致MAC层填充导致的资源浪费会更加严重；另一方面，NR中高可靠低延时业务(ultra-reliable and low latency communications，URLLC)中的URLLC数据传输必须在尽可能短的时间内传完，对于相同的数据量，传输时长越短，需要的频域带宽更宽，这导致每个OFDM符号包含的资源粒子(resource element，RE)数更多。而为了使MAC数据充满所有物理层OFDM符号，需要填充的冗余数据就越多。
因此，亟需一种传输控制方法来解决OFDM系统(如5G NR系统)中数据传输时MAC层填充冗余数据多的问题。
发明内容
本申请的实施例提供传输控制方法及装置，以解决OFDM系统(如5G NR系统)中数据传输时MAC层填充冗余数据多的问题。
为达到上述目的，本申请的实施例采用如下技术方案：
一方面，本申请实施例提供一种传输控制方法，应用于正交频分复用OFDM系统，该方法包括：第一设备生成传输控制信息，该传输控制信息包括资源指示信息、压缩指示和第一指示；其中，该资源指示信息用于指示该第一设备为第二设备分配的传输资源，该传输资源包括至少两个符号，该压缩指示用于指示该传输资源中特定符号的参数集Numerology，该特定符号包括尾符号和/或第二符号，该尾符号为该传输资源中最后一个符号，该第二符号为该传输资源中全部传输解调参考信号DMRS的符号，该第二符号包括至少一个符号，该第一指示用于指示该传输资源中除该特定符号之外的符号的Numerology；该第一设备向该第二设备发送该传输控制信息。本申请实施例提供的传输控制方法，第一设备生成传输控制信息，将将传输控制信息发送给第二设备， 第二设备可通过资源指示信息确定分配的传输资源，根据压缩指示确定传输资源中特定符号的Numerology，根据第一指示确定除特定符号之外的符号的Numerology。第一设备可根据待传输的数据量的实际需求灵活、合理配置传输资源，第一设备和第二设备根据该传输资源传输数据，比每个符号的Numerology相同的传输资源，减少了MAC层填充的冗余数据和/或缩短了传输DMRS的符号长度，从而节省了传输资源。
一种可能的实现方式中，该第一设备在该传输资源上向该第二设备发送数据或者接收来自该第二设备的数据，该传输资源中的该特定符号采用该压缩指示所指示的Numerology，该传输资源中除该特定符号之外的其他符号采用该第一指示所指示的Numerology。基于该方案，第一设备可以在第一设备为第二设备分配的传输资源上向第二设备发送数据，或者接收第二设备发送的数据，由于该传输资源采用了压缩指示中的Numerology，因此在该传输资源上传输数据可以节省传输资源。
一种可能的实现方式中，该特定符号仅包括该尾符号，该压缩指示用于指示该尾符号的Numerology。
一种可能的实现方式中，该特定符号仅包括该第二符号，该压缩指示用于指示该第二符号的Numerology。
一种可能的实现方式中，该特定符号包括该尾符号和该第二符号，该压缩指示用于指示该尾符号的Numerology和该第二符号的Numerology。
一种可能的实现方式中，该第二符号的Numerology中包括该第二符号的子载波间隔，该第二符号的子载波间隔为第一符号的子载波间隔的整数倍，该第一符号为该传输资源中非该特定符号的符号。基于该方案，当特定符号为第二符号时，可确定第二符号的子载波间隔为第一符号的子载波间隔的整数倍，根据确定的第二符号的子载波间隔传输DMRS信号，在时域上可以减少传输DMRS的符号长度，节省了传输开销。
一种可能的实现方式中，该尾符号的Numerology中包括该尾符号的子载波间隔，该尾符号的子载波间隔为该第一符号的子载波间隔的整数倍。
一种可能的实现方式中，该尾符号的子载波间隔为该第一设备基于公式U＝L mod V确定的；其中，U表示该尾符号中填充的有效数据映射的复数的个数，L表示有效数据映射的复数的总个数，V表示该第一符号的子载波的个数；
Figure PCTCN2017101310-appb-000001
其中，N1表示该第一符号的子载波间隔，N2表示该尾符号的子载波间隔，n为正整数。基于该方案，通过上述公式可确定尾符号中可填充的有效数据映射的复数个数，从而可以确定尾符号中需要填充的冗余复数的个数，当尾符号中需要填充的冗余复数的个数大于等于第一符号中RE的个数的一半，通过本申请实施例提供的传输控制方法，可以根据尾符号中可填充的有效数据映射的复数个数和第一符号的子载波的个数确定传输资源中尾符号的子载波间隔。
一种可能的实现方式中，当该传输资源包括第三符号，该尾符号的子载波间隔为该第一设备基于公式U＝(L-Q)mod V确定的，该第三符号为有效数据和DMRS信号混合传输的符号；其中，U表示该尾符号中填充的有效数据映射的复数的个数，L表示有效数据映射的复数的总个数，V表示该第一符号的子载波的个数，Q表示所有该第三符号中该有效数据映射的复数的个数；
Figure PCTCN2017101310-appb-000002
其中，N1表示该第一符号的子载波间隔，N2表示该尾符号的子载波间隔，n为正整数。基于该方案，通过上述公式可确定在传输资源中存在第三符号的情况下，尾符号中可填充的有效数据映射的复数个数，从而可以确定尾符号中需要填充的冗余复数的个数，当尾符号中需要填充的冗余复数的个数大于等于第一符号中RE的个数的一半，则可以确定尾符号为特定符号，根据尾符号中可填充的有效数据映射的复数个数和第一符号的子载波的个数确定传输资源中尾符号的子载波间隔，从而在时域上实现对尾符号的压缩。
一种可能的实现方式中，该特定符号的Numerology包括循环前缀CP长度，该特定符号的CP长度T1为该第一设备基于公式
Figure PCTCN2017101310-appb-000003
确定的，其中，T为该第一符号的CP长度，Ni为该特定符号的子载波间隔。基于该方案，通过上述公式可实现确定特定符号的CP长度。
一种可能的实现方式中，该第一设备向该第二设备发送该传输控制信息，包括：该第一设备将该资源指示信息、该压缩指示和该第一指示承载在相同消息或者不同消息中向该第二设备发送。基于该方案，通过将资源指示信息、压缩指示和第一指示承载在相同消息或者不同消息中向第二设备发送，可以使得第一设备灵活选择通知第二设备的方式。
一种可能的实现方式中，第一指示可承载在下行控制信息DCI中、承载在媒体访问控制层控制元素MAC CE中、承载在主系统信息块MIB中、承载在系统信息块SIB中、承载在广播消息中、承载在无线资源控制RRC信令中、承载在组公共下行控制信息group common DCI中或者承载在传输帧的物理头中。基于该方案，第一指示可以根据实际使用的场景灵活选择承载的消息或信令中。
一种可能的实现方式中，当特定符号仅包括尾符号，或者该特定符号包括尾符号和第二符号时，压缩指示承载在DCI中或者承载在传输帧的物理头中；当该特定符号仅包括第二符号时，压缩指示承载在DCI中、承载在MAC CE中、承载在MIB中、承载在SIB中、承载在RRC信令中、承载在group common DCI中或者承载在传输帧的物理头中。基于该方案，压缩指示可以根据实际使用的场景灵活选择承载的信令或消息。
又一方面，提供一种传输控制方法，应用于正交频分复用OFDM系统，该方法包括：第二设备接收第一设备发送的传输控制信息，该传输控制信息包括资源指示信息、压缩指示和第一指示；其中，该资源指示信息用于指示该第一设备为该第二设备分配的传输资源，该传输资源包括至少两个符号，该压缩指示用于指示该传输资源中特定符号的参数集Numerology，该特定符号包括尾符号和/或第二符号，该尾符号为该传输资源中最后一个符号，该第二符号为该传输资源中全部传输解调参考信号DMRS的符号，该第二符号包括至少一个符号，该第一指示用于指示该传输资源中除该特定符号之外的符号的Numerology；该第二设备根据该资源指示信息确定该传输资源，根据该压缩指示确定该传输资源中特定符号的Numerology，根据该第一指示确定该传输资源 中除特定符号的Numerology。基于该方案，第二设备可通过资源指示信息确定分配的传输资源，根据压缩指示确定传输资源中特定符号的Numerology，根据第一指示确定除特定符号之外的符号的Numerology。该传输控制信息指示的传输资源可由第一设备根据待传输的数据量灵活、合理配置，第二设备根据该传输资源传输数据，比每个符号的Numerology相同的传输资源，可以减少尾符号中填充的冗余数据和/或缩短传输资源中传输DMRS的时长，从而节省了传输资源。
一种可能的实现方式中，该第二设备在该传输资源上向该第一设备发送数据或者接收来自该第一设备的数据，该传输资源中的该特定符号采用该压缩指示所指示的Numerology，该传输资源中除该特定符号之外的其他符号采用该第一指示所指示的Numerology。基于该方案，第二设备可以在第一设备为第二设备分配的传输资源上向第一设备发送数据，或者接收第一设备发送的数据，由于该传输资源采用了压缩指示中的Numerology，因此在该传输资源上传输数据可以节省传输资源。
一种可能的实现方式中，第二设备接收第一设备发送的传输控制信息，包括：该第二设备接收该第一设备发送的该资源指示信息、该压缩指示和该第一指示承载在相同消息或者不同消息中。基于该方案，第二设备可接收资源指示信息、压缩指示和第一指示承载的相同消息或者不同的消息，可以使得第二设备灵活接收第一设备发送的传输控制信息。
一种可能的实现方式中，特定符号仅包括尾符号，压缩指示用于指示该尾符号的Numerology。
一种可能的实现方式中，特定符号仅包括第二符号，压缩指示用于指示该第二符号的Numerology。
一种可能的实现方式中，特定符号包括尾符号和第二符号，压缩指示用于指示该尾符号的Numerology和该第二符号的Numerology。
一种可能的实现方式中，第二符号的Numerology中包括该第二符号的子载波间隔，该第二符号的子载波间隔为第一符号的子载波间隔的整数倍，该第一符号为该传输资源中非该特定符号的符号。
一种可能的实现方式中，尾符号的Numerology中包括该尾符号的子载波间隔，该尾符号的子载波间隔为第一符号的子载波间隔的整数倍。
一种可能的实现方式中，第二设备接收第一设备发送的传输控制信息，包括：该第二设备接收第一设备发送的资源指示信息、压缩指示和第一指示承载在相同消息或者不同消息中。基于该方案，可以使得第二设备从相同消息或者不同消息中接收资源指示信息、压缩指示和第一指示。
一种可能的实现方式中，该第一指示可承载在下行控制信息DCI中、承载在媒体访问控制层控制元素MAC CE中、承载在主系统信息块MIB中、承载在系统信息块SIB中、承载在广播消息中、承载在无线资源控制RRC信令中、承载在组公共下行控制信息group common DCI中或者承载在传输帧的物理头中。基于该方案，第二设备接收的第一指示可以为第一设备根据实际使用的场景灵活选择承载的消息或信令中。
一种可能的实现方式中，当该特定符号仅包括该尾符号，或者该特定符号包括该尾符号和该第二符号时，该压缩指示承载在DCI中或者承载在传输帧的物理头中；当 该特定符号仅包括该第二符号时，该压缩指示承载在DCI中、承载在MAC CE中、承载在MIB中、承载在SIB中、承载在RRC信令中、承载在group common DCI中或者承载在传输帧的物理头中。基于该方案，第二设备可以从不同的信令或消息中获取压缩指示。
又一方面，本申请实施例提供一种传输帧的帧格式，该传输帧格式的物理头中用于携带压缩指示和/或第一指示。
又一方面，本申请实施例提供一种第一设备，该第一设备具有实现上述方法中终端行为的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
又一方面，本申请实施例提供一种第二设备，该第二设备具有实现上述方法中终端行为的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
又一方面，本申请实施例提供一种第一设备，包括：处理器、存储器和通信接口；该存储器用于存储计算机执行指令，当该第一设备运行时，该处理器执行该存储器存储的该计算机执行指令，以使该第一设备执行上述各方面所述的传输控制方法。
又一方面，本申请实施例提供一种第二设备，包括：处理器、存储器和通信接口；该存储器用于存储计算机执行指令，当该第二设备运行时，该处理器执行该存储器存储的该计算机执行指令，以使该第二设备执行上述各方面所述的传输控制方法。
又一方面，本申请实施例提供了一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述各方面所述的传输控制方法。
又一方面，本申请实施例提供了一种包含指令的计算机程序产品，当其在计算机上执行时，使得计算机执行上述各方面所述的传输控制方法。
另外，上述装置实施例中任一种设计方式所带来的技术效果可参见上述传输控制方法实施例中不同设计方式所带来的技术效果，此处不再赘述。
本申请的这些方面或其他方面在以下实施例的描述中会更加简明易懂。
附图说明
图1为本申请实施例提供的一种RB pair的结构示意图；
[根据细则91更正 03.11.2017]　
图2为本申请实施例提供的一种MAC层帧结构的示意图。
[根据细则91更正 03.11.2017]　
图3为本申请实施例提供的一种微时隙的结构示意图；
图4为本申请实施例提供的一种传输控制系统架构图；
[根据细则91更正 03.11.2017]　
图5为本申请实施例提供的一种传输控制方法的交互示意图；
图6为本申请实施例提供的一种第三符号的示意图；
图7为本申请实施例提供的一种特定符号的压缩示意图；
图8为本申请实施例提供的又一种特定符号的压缩示意图；
图9为本申请实施例提供的又一种特定符号的压缩示意图；
图10为本申请实施例提供的又一种特定符号的压缩示意图；
[根据细则91更正 03.11.2017]　
图11为本申请实施例提供的一种传输资源的示意图；
图12为本申请实施例提供的一种802.11ax的帧格式示意图；
图13为本申请实施例提供的一种第一设备的结构示意图；
图14为本申请实施例提供的又一种第一设备的结构示意图；
图15为本申请实施例提供的一种第二设备的结构示意图；
图16为本申请实施例提供的又一种第二设备的结构示意图；
图17为本申请实施例提供的一种第一设备的硬件结构示意图；
图18为本申请实施例提供的一种第二设备的硬件结构示意图。
具体实施方式
首先，给出与本申请相关的概念。
1、资源块对(RB pair)
传统蜂窝通信系统中，RB pair是物理层资源调度的最小单位，每个RB pair包括两个RB，在频域上每个RB包括12个子载波，相邻子载波之间的子载波间隔(Subcarrier Spacing，SCS)为15KHz；在时域上每个RB包括1个时隙(slot)。其中，在符号的循环前缀(cyclic prefix，CP)为常规循环前缀(normal CP，NCP)的情况下，每个slot中包括6个符号；在符号的CP为扩展循环前缀(extended CP，ECP)的情况下，每个slot中包括7个符号。示例性的，图1为本申请实施例提供的一个RB pair的结构示意图，如图1所示，在NCP情况下，一个RB pair在时域上包括7个符号，实际等于一个子帧的长度，即1ms；每个小矩形框表示一个资源粒子(resource element，RE)，在时域上表示一个符号，在频域上表示一个子载波对应的频域资源。
需要说明的是，本申请实施例中的符号即为OFDM符号。
2、微时隙(mini-slot)
在5G NR系统中，微时隙是物理层资源调度的最小单位，在时域中，微时隙可以包括可变数目的符号，最少可包括1个符号，NR在频域上可以支持多种子载波间隔，例如，SCS＝15kHz×2n，n为正整数，而LTE系统仅支持15kHz的子载波间隔。
[根据细则91更正 03.11.2017]　
图3为本申请实施例提供的一种微时隙的结构示意图，NR中1子帧包括4个微时隙，其中微时隙1包括3个符号、微时隙2包括5个符号、微时隙3包括2个符号，以及微时隙4包括4个符号。微时隙1用于UE1传输数据、微时隙2用于UE2传输数据、微时隙3用于UE3传输数据，以及微时隙4用于UE4传输数据。
3、MAC层帧结构
[根据细则91更正 03.11.2017]　
图2为本申请实施例提供的一种MAC层帧结构的示意图，如图3所示，MAC层帧结构包括MAC头、MAC控制元素1、MAC控制元素2、至少一个MAC信息块和填充部分。其中，填充部分为可选的，当MAC层数据恰好填充满所分配的物理层传输资源，则不需要填充，也就是说不存在填充部分。当MAC层数据不能够填充满所分配的传输资源，则在如图3所示的MAC层帧结构中的填充部分增加冗余数据，使得MAC层数据恰好填充满所分配的传输资源。
4、解调参考信号(demodulation reference signal，DMRS)
DMRS用于信道估计，在LTE系统的上行传输中，时域上DMRS占用独立符号，频域上占用该符号的每个RE，设备在接收到DMRS后可以估计出传输资源中子载波的信道状态。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。
需要说明的是，本申请实施例中的“/”表示或的意思，例如，A/B可以表示A或B；本申请实施例中的“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。“多个”是指两个或多于两个。
需要说明的是，本申请实施例中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
需要说明的是，本申请实施例中，“的(of)”，“相应的(corresponding，relevant)”和“对应的(corresponding)”有时可以混用，应当指出的是，在不强调其区别时，其所要表达的含义是一致的。
需要说明的是，本申请实施例中的第一设备为具有中心控制功能的设备，第二设备是能够接收第一设备调度和指示信息的设备。第一设备为第二设备分配传输资源，第一设备和第二设备通过分配的传输资源进行数据传输。其中，第一设备可以为宏基站、微基站、热点(pico)、家庭基站(femeto)、传输点(TP)、中继(relay)或接入点(access point，AP)等；例如，第二设备可以为手机、电脑、手环、智能手表、数据卡、传感器或站点(station，STA)等设备。对于副链路(sidelink)即设备到设备(device-to-device，D2D)，其中，具有中心控制功能的设备为第一设备，能够接收第一设备调度和指示信息的设备为第二设备，例如，手环-手机-基站的链路中，对于手机和基站的链路，基站为第一设备，手机为第二设备，对于手机和手环之间的链路，手机为第一设备，手环为第二设备。
图4为本申请实施例提供的一种传输控制系统架构图，传输控制系统包括基站、UE1、UE2、UE3和UE4。其中，在基站、UE1、UE2和UE3的链路中，基站为第一设备，UE1、UE2和UE3为第二设备；在UE3和UE4的链路中，UE3为第一设备，UE4为第二设备。
下面，结合图4对本申请实施例提供的传输控制方法进行具体阐述。
如图5所示，为本申请实施例提供的一种传输控制方法的交互示意图。包括步骤S101-S104：
S101、第一设备生成传输控制信息，传输控制信息包括资源指示信息、压缩指示和第一指示。
其中，资源指示信息用于指示第一设备为第二设备分配的传输资源，传输资源包括至少两个符号，压缩指示用于指示传输资源中特定符号的参数集Numerology，特定符号包括尾符号和/或第二符号，尾符号为传输资源中最后一个符号，第二符号为传输资源中仅传输解调参考信号DMRS的符号，第二符号包括至少一个符号，第一指示用于指示传输资源中除特定符号之外的符号的Numerology。
示例性的，本申请实施例中的尾符号可以为微时隙的最后一个符号，例如，图3中的，给UE1分配的微时隙1中的第3个符号、给UE2分配的微时隙2中的第5个符号、给UE3分配的微时隙3中的第2个符号或者给UE4分配的微时隙4中的第4个符号为尾符号。
S102、第一设备向第二设备发送传输控制信息。
S103、第二设备接收第一设备发送的传输控制信息。
S104、第二设备根据资源指示信息确定传输资源，根据压缩指示确定传输资源中特定符号的Numerology，根据第一指示确定传输资源中除特定符号之外符号的Numerology。
第一设备生成传输控制信息，将将传输控制信息发送给第二设备，第二设备可通过资源指示信息确定分配的传输资源，根据压缩指示确定传输资源中特定符号的Numerology，根据第一指示确定除特定符号之外的符号的Numerology。第一设备可根据待传输的数据量的实际需求灵活、合理配置传输资源，第一设备和第二设备根据该传输资源传输数据，比每个符号的Numerology相同的传输资源，减少了MAC层填充的冗余数据和/或缩短了传输DMRS的符号长度，从而节省了传输资源。
具体的，第一设备生成传输控制信息具体可以包括步骤S101A-S101B：
S101A、第一设备确定第一指示携带的Numerology。
其中，第一指示的Numerology包括第一符号的子载波间隔和/或CP长度，第一符号为传输资源中非特定符号的符号，第一符号包括至少一个符号，第一符号中的每个符号的Numerology相同。
需要说明的，本申请实施例中，第一符号的Numerology为确定传输资源中特定符号Numerology时的基准Numerology，第一符号的Numerology与传输数据的数据量无关，同一个传输资源中的第一符号中的每个符号的Numerology相同，不同的传输资源中的第一符号的Numerology可以相同也可以不同，本申请实施例对此不作具体限定。
通常，分配的传输资源包括在时域上分配的符号个数和在频域上RB的个数，其中，RB中包括了RE的个数(即子载波的个数)。符号中的每个RE包括有效数据部分和CP部分，不同的载波间隔会导致有效数据部分的时长发生变化。根据传输资源传输数据的两个设备，通过第一指示携带的Numerology确定传输资源中每个符号中RE的CP长度和子载波间隔，从而确定发送数据时在符号中的填充方式，或者通过传输资源中每个符号中RE的CP长度和子载波间隔确定如何解调接收的数据。其中，当CP类型确定、且在时域中有效数据部分的时长和CP部分的时长等比例变化的情况下，CP长度、子载波间隔和Numerology存在一一对应关系，此时，根据子载波间隔可以确定CP长度，或者根据CP长度可以确定子载波间隔。例如，第一指示中可以仅携带第一符号的CP长度或者仅携带第一符号的子载波间隔。当然，第一指示也可以同时携带第一符号的CP长度指示和子载波间隔指示。
可选的，第一设备可配置不同带宽部分(bandwidth part，BWP)和不同Numerology的对应关系，其中，BWP也称为子频带。在第一设备与第二设备传输数据之前，第一设备可以根据第一设备和第二设备使用的BWP确定目标对应关系，并将该目标对应关系发送给第二设备。本申请实施例中第一指示所指示的第一符号的Numerology可以由第一设备通过上述方式确定。第一设备可根据第二设备的移动速度和/或当前业务对于延迟的要求等因素确定使用哪个BWP上的传输资源，相当于与此传输资源所绑定的Numerology为第一符号的Numerology。例如，对于高速移动和/或业务对延迟不敏感的第二设备，可配置CP长度较大、SCS较小的BWP上的传输资源；对于低速移动 和/或业务对延迟敏感的第二设备，可配置CP长度较小、SCS较大的BWP上的传输资源。
S101B、第一设备根据第一符号的Numerology确定特定符号的Numerology，以得到压缩指示。
具体的，第一设备可根据待传输数据的数据量和传输资源中第一符号在频域上包含的RE个数确定压缩指示。
可选的，当特定符号仅包括尾符号，压缩指示用于指示尾符号的Numerology。当特定符号仅包括第二符号，压缩指示用于指示第二符号的Numerology。当特定符号包括尾符号和第二符号，压缩指示用于指示尾符号的Numerology和第二符号的Numerology。
本申请实施例中，压缩指示可以灵活的根据不同特定符号携带不同的Numerology。
可选的，压缩指示中可直接携带特定符号的子载波间隔和/或CP长度，例如携带尾符号的子载波间隔为30KHz，也可以携带特定符号的压缩指示值，其中，当压缩指示中携带的为压缩指示值时，第一设备和第二设备中存储压缩指示值和特定符号的Numerology的对应关系。例如，假设携带的压缩指示值为0时表示没有对特定符号进行压缩，即特定符号采用与第一符号相同的Numerology，如SCS＝15kHz，假设压缩指示值为1时表示将特定符号的数据部分相比第一符号压缩一半，即特定符号的SCS是第一符号的两倍，如SCS＝30kHz，本申请实施例对压缩指示中携带的形式不作具体限定。
下面简要介绍第一设备如何确定特定符号的子载波间隔以及如何确定特定符号的CP长度。
一、第一设备确定特定符号的子载波间隔
A、第一设备确定第二符号的子载波间隔
第一设备根据信道平坦程度，确定第二符号的Numerology，其中当第二符号的Numerology包括第二符号的子载波间隔，第二符号的子载波间隔为第一符号的子载波间隔的整数倍。
例如，第一符号的子载波间隔为N1，则第二符号的子载波间隔可选择2nN1，n为正整数。
需要说明的是，当信道在频域上越平坦，n的值可配置的越大，子载波间隔越大，则符号时长越小，节省的传输开销越多。
示例性的，第一符号的子载波间隔N1＝15kHz×2M，当采用本申请实施例提供的传输控制方法时，则第二符号的子载波间隔可以为15kHz×2M+n。假设第一符号中每个符号的时域长度为T，则第二符号中每个符号的时域长度缩短为
Figure PCTCN2017101310-appb-000004
相比传输资源中每个符号都采用相同Numerology，采用本申请实施例提供的传输控制方法，每个第二符号可以节省
Figure PCTCN2017101310-appb-000005
的传输时长。
本申请实施例提供的传输控制方法，当特定符号为第二符号，可确定第二符号的子载波间隔为第一符号的子载波间隔的整数倍，根据确定的第二符号的子载波间隔传输DMRS信号，在时域上可以减少传输DMRS的符号长度，节省了传输开销。
B、第一设备确定尾符号的子载波间隔
尾符号的Numerology中包括尾符号的子载波间隔，尾符号的子载波间隔为第一符号的子载波间隔的整数倍。
1、尾符号的子载波间隔为第一设备基于公式U＝L mod V确定的。
其中，U表示尾符号中填充的有效数据映射的复数的个数，L表示有效数据映射的复数的总个数，V表示第一符号的子载波的个数；
Figure PCTCN2017101310-appb-000006
其中，N1表示第一符号的子载波间隔，N2表示尾符号的子载波间隔，n为正整数。
首先，第一设备基于公式(1)确定尾符号中承载的有效数据映射的复数个数。
U＝L mod V                  (1)
其次，第一设备在确定尾符号中承载的有效数据映射的复数个数之后，基于公式(2)确定尾符号的子载波间隔。
Figure PCTCN2017101310-appb-000007
需要说明的是，当U的值为0时，表示待传输的有效数据恰好填满子载波间隔为N1的所有符号，也就是说尾符号中不需要增加冗余数据，即尾符号的子载波间隔等于第一符号的子载波间隔，也就是说，此时尾符号不需要压缩；当
Figure PCTCN2017101310-appb-000008
时，表示尾符号中可填充的待传输数据超过尾符号中的一半以上的RE，此时当压缩尾符号，待传输数据不能够完全传输，因此，尾符号不能压缩，即尾符号的子载波间隔等于第一符号的子载波间隔；当
Figure PCTCN2017101310-appb-000009
时，表示尾符号中可填充的待传输数据未超过尾符号中
Figure PCTCN2017101310-appb-000010
的RE，此时可以压缩尾符号，尾符号的子载波间隔可以在N1，2N1，4N1，...2nN1中选择。选择的子载波间隔越大，则压缩后的尾符号时长就越短，传输开销节省的效果就越明显。因此，当考虑传输开销最小化时，N2＝2nN1节省的传输开销最多。
通常，第一设备可以根据待传输数据的数据量确定有效数据映射的复数的总个数，其中，待传输数据可以为第一设备向第二设备发送的数据，也可以为第一设备接收第二设备发送的数据，在第一设备接收第二数据发送待传输数据之前，第二设备将待传输数据的数据量发送给第一设备，以使得第一设备根据待传输数据的数据量为第二设备分配传输资源，本申请实施例对第一设备如何获取待传输数据的数据量不作具体限定。
通过公式(1)可确定尾符号中填充的有效数据映射的复数个数，从而可以确定尾符号中需要填充的冗余复数的个数，当尾符号中需要填充的冗余复数的个数大于等于第一符号中RE的个数的一半，则通过本申请实施例提供的传输控制方法，可以根据尾符号中填充的有效数据映射的复数个数和第一符号的子载波的个数确定传输资源中 尾符号的子载波间隔。
2、当传输资源包括第三符号，尾符号的子载波间隔为第一设备基于公式U＝(L-Q)mod V确定的，第三符号为有效数据和DMRS信号混合传输的符号。
其中，U表示尾符号中填充的有效数据映射的复数的个数，L表示有效数据映射的复数的总个数，V表示第一符号的子载波的个数，Q表示所有第三符号中有效数据映射的复数的个数；
Figure PCTCN2017101310-appb-000011
其中，N1表示第一符号的子载波间隔，N2表示尾符号的子载波间隔，n为正整数。
需要说明的是，有效数据和DMRS信号混合传输表示符号中部分RE承载有效数据，部分RE承载DMRS信号。
首先，第一设备基于公式(3)确定尾符号中承载的有效数据映射的复数等效个数。
U＝(L-Q)modV           (3)
其次，第一设备在确定尾符号中承载的有效数据映射的复数等效个数之后基于上述公式(2)确定尾符号的子载波间隔。
需要说明的是，有效数据和DMRS信号混合传输表示一个符号中部分RE承载有效数据，部分RE承载DMRS信号。示例性的，图6为本申请实施例提供的第三符号的示意图。如图6所示，假设一个符号包括12个RE，从上往下依次为RE1-RE12。其中，在图6的6A中，RE1、RE3、RE5、RE7、RE9和RE11用于传输数据，RE2、RE4、RE6、RE8、RE10和RE12用于传输DMRS信号；在图6的6B中，RE1、RE3、RE4、RE6、RE7、RE9、RE10和RE12用于传输数据，RE2、RE4、RE8和RE11用于传输DMRS信号；在图6的6C中，RE1、RE2、RE4、RE5、RE6、RE8、RE9、RE10和RE12用于传输数据，RE3、RE7和RE11用于传输DMRS信号；在图6的6D中，RE1、RE2、RE3、RE5、RE6、RE7、RE8、RE10、RE11和RE12用于传输数据，RE4和RE9用于传输DMRS信号；在图6的6E中，RE1、RE4、RE5、RE8、RE9和RE12用于传输数据，RE2、RE3、RE6、RE7、RE10和RE11用于传输数据。
通常，在进行数据传输时，传输资源中用于混合传输的符号可采用如图6中的任意一种方式混合传输有效数据和DMRS信号，本申请实施例对此不作具体限定。
需要说明的是，本申请实施例中，仅以一个符号包括12个RE为例进行说明，当然，一个符号中也可以包括其他个数的RE，比如一个符号包括24个RE，本申请实施例中对于符号中的RE的个数不作具体限定。
通过公式(3)可确定在传输资源中存在第三符号的情况下，尾符号中可填充的有效数据映射的复数个数，从而可以确定尾符号中需要填充的冗余复数的个数，当尾符号中需要填充的冗余复数的个数大于等于第一符号中RE的个数的一半，则可以确定尾符号为特定符号，根据尾符号中可填充的有效数据映射的复数个数和第一符号的子载波的个数确定传输资源中尾符号的子载波间隔，从而在时域上实现对尾符号的压缩。
3、在多输入多输出(multiple-input multiple-output，MIMO)系统中，每层流的子载波间隔相同，因此，每层流中的尾符号中可填充的有效数据映射的复数的个数U可以根据上述公式(1)或公式(3)确定，从而可以根据公式(2)确定每层流尾符号的 子载波间隔，再根据每层流的子载波间隔和公式(4)确定MIMO系统中各层流子载波间隔。
N2∈N2，1∩N2，2∩N2，3∩…        (4)
其中，N2，1表示第一层流中尾符号的子载波间隔的集合，N2，2表示第二层流中尾符号的子载波间隔的集合，N2，3表示第三层流中尾符号的子载波间隔的集合。
二、第一设备可根据如下方式确定特定符号中的CP长度：
特定符号的Numerology包括循环前缀CP长度，特定符号的CP长度T1为第一设备基于公式(5)确定的。
Figure PCTCN2017101310-appb-000012
其中，T为第一符号的CP长度，Ni为特定符号的子载波间隔。
通常，当传输资源中符号的CP类型(NCP/ECP)确定，则可根据CP类型确定第一符号的CP长度。
需要说明的是，尾符号的CP长度和第二符号的CP长度均可根据公式(5)确定。
本申请实施例中提供的传输控制方法，通过公式(5)可实现确定特定符号的CP长度。
可选的，当第一设备发送的压缩指示中携带压缩指示值，则第一设备和第二设备中分别存储一个相同的压缩指示值和特定符号Numerology的对应关系。
当第一设备根据待传输数据确定传输资源后，第一设备向第二设备发送与当前特定符号的子载波间隔对应的压缩指示值；第二设备在接收到压缩指示后根据该压缩指示值确定传输资源中特定符号的子载波间隔。
示例性的，假设压缩指示为二进制，传输资源中的符号数为第一符号(即基准符号)的整数倍。当分配的传输资源中第二符号包括K个传输DMRS的符号，结合尾符号压缩，最多可以节省K个第一符号长度的符号；其中，K大于1时，压缩指示的长度大于1比特。
需要说明的是，在确定第一符号的Numerology和特定符号的子载波间隔之后，则第一设备可根据频域和时域的关系确定特定符号的时域的长度，从而可以确定分配的传输资源中符号占用的总时长。
例如，传输资源中第二符号仅包含1个符号，记为DMRS符号1，每个第一符号采用的子载波间隔为N1，基站确定DMRS符号1在时域上至少可以压缩一半时长，尾符号在时域上也至少可以压缩一半时长，即，尾符号和DMRS符号1均可采用大于等于N1的子载波间隔。
假设第一设备和第二设备预先配置了如表1所示的压缩指示对照表，当第一设备发送的压缩指示携带的压缩指示值为0时，表示尾符号和DMRS符号1都不压缩，当压缩指示携带的压缩指示值为1时，表示尾符号的时域长度压缩为第一符号的1/2，DMRS符号1的时域长度压缩为第一符号的1/2。也就是说，尾符号和DMRS符号1的子载波间隔均为第一符号子载波间隔的两倍。
表1
压缩指示 尾符号长度 DMRS符号1长度
0 1 1
1 1/2 1/2
需要说明的是，为了便于说明，本申请实施例中压缩后得到的传输资源的符号数目以第一符号的整数个为例进行说明，本申请实施例中压缩后的传输资源的符号数据也可以为分数个符号，比如，压缩得到有0.5个符号或0.25个符号，分配的传输资源符号可以为2.5个符号或2.25个符号，本申请实施例对此不作具体限定。
假设传输资源中第二符号包括2个符号，分别为DMRS符号1、DMRS符号2，压缩指示需要3个比特才能够表示不同的压缩情况。如表2所示，包括7种压缩方式。其中，压缩指示值为000表示尾符号和DMRS符号都没有压缩，时域上，节省的符号长度为0个第一符号的长度；压缩指示值为001表示尾符号没有压缩，DMRS符号2和DMRS符号1均压缩为第一符号长度的1/2，时域上，节省的符号长度为1个第一符号的长度；压缩指示值为010表示尾符号压缩为第一符号长度的1/2，DMRS符号2没有压缩、DMRS符号1压缩为第一符号长度的1/2，时域上，节省的符号长度为1个第一符号的长度；压缩指示值为011表示尾符号压缩为第一符号长度的1/2、DMRS符号2压缩为第一符号长度的1/2、DMRS符号1没有压缩，时域上，节省的符号长度为1个第一符号的长度；压缩指示值为100表示尾符号压缩为第一符号长度的1/2、DMRS符号2压缩为第一符号长度的1/4、DMRS符号2压缩为第一符号长度的1/4，时域上，节省的符号长度为2个第一符号的长度；压缩指示值为101表示尾符号压缩为第一符号长度的1/4、DMRS符号2压缩为第一符号长度的1/2、DMRS符号2压缩为第一符号长度的1/4，时域上，节省的符号长度为2个第一符号的长度；压缩指示值为110表示尾符号压缩为第一符号长度的1/4、DMRS符号2压缩为第一符号长度的1/4、DMRS符号2压缩为第一符号长度的1/2，时域上，节省的符号长度为2个第一符号的长度；压缩指示值为111可以预留给其他情况。
表2
Figure PCTCN2017101310-appb-000013
需要说明的是，本申请实施例中，仅仅以压缩的时域长度为第一符号的1/2n，为例进行说明，n为正整数，也可以以其他值进行压缩，本申请实施例对此不作具体限 定。
需要说明的是，本申请实施例中，仅以表1和表2为例进行说明，实际应用中可以包括其他形式的组合，本申请实施例对此不作具体限定。
可选的，第一设备将资源指示信息、压缩指示和第一指示承载在相同消息或者不同消息中向第二设备发送。
通过将资源指示信息、压缩指示和第一指示承载在相同消息或者不同消息中向第二设备发送，可以使得第一设备灵活选择通知第二设备的方式。可以使得第二设备从相同消息或者不同消息中接收资源指示信息、压缩指示和第一指示。
可选的，第一指示可承载在下行控制信息(downlink control information，DCI)中、承载在媒体访问控制层控制元素(MAC Control Element，MAC CE)中、承载在主系统信息块(master information block，MIB)中、承载在系统信息块(system information block，SIB)中、承载在广播消息中、承载在无线资源控制(radio resource control，RRC)信令中、承载在组公共下行控制信息(group common DCI)中或者承载在传输帧的物理头中。
本申请实施例提供的传输资源控制方法，第一指示可以根据实际使用的场景灵活选择承载的消息或信令中。
可选的，当特定符号仅包括尾符号，或者特定符号包括尾符号和第二符号时，压缩指示承载在DCI中或者承载在传输帧的物理头中。
本申请实施例提供的传输资源控制方法，压缩指示可以根据实际使用的场景灵活选择承载的载体。
可选的，当特定符号仅包括第二符号，压缩指示可承载在DCI中、承载在MAC CE中、承载在MIB中、承载在SIB中、承载在广播消息中、承载在RRC信令中、承载在group common DCI中或者承载在传输帧的物理头中。
示例性的，当压缩指示和第一指示携带在不同的消息中，可以按照如下的组合分别发送压缩指示和第一指示。例如，当第一指示承载在系统消息(例如SIB/MIB)、MAC CE、广播消息或RRC信令中，则压缩指示可通过物理层信令携带(例如承载在物理下行控制信道(physical downlink control channel，PCDDH)中的DCI)；或者，当第一指示承载在组公共group common DCI中，则压缩指示可承载在DCI中，需要说明的是，压缩指示承载的DCI为每个UE的DCI。当然，压缩指示可以和第一指示携带在同一个消息中，例如压缩指示和第一指示都承载在DCI中。
当传输资源中的特定符号为尾符号时，第一设备仅对尾符号压缩，图7为本申请实施例提供的一种特定符号的压缩示意图。其中，图7中的7A为第一设备根据待传输数据的数据量确定的3个第一符号(即基准符号)，分别记为符号1、符号2和符号3；其中，符号1、符号2和符号3中均包括12个子载波，子载波间隔均为N1＝15KHz。假设第一设备确定特定符号仅为符号3(尾符号)之后，假设第一设备确定符号3的子载波间隔为2倍的N1，则第一设备可确定符号3在时域上传输的时长为第一符号时长的1/2，则第一设备分配如图7中的7B所示的传输资源，传输资源包括3个符号，分别为符号1、符号2和符号4(尾符号)，其中，符号1和符号2为第一符号，符号4在时域上的传输时长为第一符号传输时长的1/2，在频域上包括6个子载波，子载波 间隔为第一符号的2倍。图7中的7C为第一设备确定的第一指示和压缩指示。第一指示用于指示第一符号(包括符号1和符号2)的Numerology，压缩指示用于指示尾符号(符号4)的Numerology。其中，第一指示和压缩指示可以携带在同一个下行消息中，也可以携带在不同的下行消息中。
需要说明的是，本申请实施例中的第一符号仅仅为示例性的说明，实际应用中，第一符号Numerology也可以为其他值，本申请实施例对于第一符号的Numerology的具体值不作具体限定。
当传输资源中的特定符号仅包括第二符号，第一设备仅对第二符号压缩，图8为本申请实施例提供的一种特定符号的压缩示意图。如图8所示，图8中的8A为第一设备根据待传输数据的数据量确定的3个第一符号，分别为符号1、符号2和符号3；其中，符号1、符号2和符号3中均包括12个子载波，每个符号的子载波间隔为N1＝15KHz。假设第一设备确定符号1为第二符号，确定符号3(尾符号)不需要压缩，则第一设备确定符号1为特定符号。当第一设备确定符号1的子载波间隔为2倍的N1，则第一设备确定符号1在时域上传输的时长变为第一符号时长的1/2。第一设备分配如图8中的8B所示的传输资源，包括3个符号，分别为符号4、符号2和符号3，符号4在时域上的传输时长为第一符号传输时长的1/2，在频域上包括6个子载波，子载波间隔为第一符号的子载波间隔的2倍。图8中的8C为第一设备确定的第一指示和压缩指示。第一指示用于指示第一符号(包括符号2和符号3)的Numerology，压缩指示用于指示第二符号(包括符号4)的Numerology，其中，第一指示和压缩指示可以携带在的同一个下行消息中，也可以携带在不同下行消息中。
当传输资源中的特定符号包括第二符号和尾符号，图9为本申请实施例提供的一种特定符号的压缩示意图。如图9所示，图9中的9A为第一设备根据待传输数据的数据量确定的3个第一符号(即基准符号)，分别记为符号1、符号2和符号3；其中，符号1、符号2和符号3中均包括12个子载波，子载波间隔均为N1＝15KHz。假设第一设备确定符号1为第二符号，确定符号3(尾符号)需要压缩，则第一设备确定符号1和符号3为特定符号。当第一设备确定符号1的子载波间隔为2倍的N1，符号3的子载波间隔为2倍的N1，则第一设备确定符号1和符号3在时域上传输的时长都变为第一符号时长的1/2。第一设备分配如图9中的9B所示的传输资源，包括3个符号，分别为符号4(第二符号)、符号2(第一符号)和符号5(尾符号)，符号2和符号5在时域上的传输时长为第一符号传输时长的1/2，在频域上包括6个子载波，子载波间隔为第一符号的子载波间隔的2倍。图9中的9C为第一设备确定的第一指示和压缩指示。第一指示用于指示第一符号(包括符号2)的Numerology，压缩指示用于指示第二符号(包括符号4和符号5)的Numerology，其中，第一指示和压缩指示可以携带在同一个下行消息中，也可以携带在不同的下行消息中。压缩指示中符号4和符号5的Numerology也可以携带在不同的下行消息中。
图10为本申请实施例提供的一种特定符号的压缩示意图。如图10中的10A所示，传输资源中包括3个符号，且传输资源中存在特定符号，需要进行传输控制，在保持符号时长不变的情况下，得到如图10中的10B所示的传输资源，该传输资源相对于图10中的10A的传输资源，时域中传输有效数据的符号时长变长，可以提高传输资 源的利用率。
通常，NR中包括URLLC业务，为了降低传输时延，URLLC数据传输必须在尽可能短的时间内传输完毕，对于相同的数据量，传输时间越短，需要的频域资源越宽，导致每个符号包含更多的RE。图11为本申请实施例提供的一种传输资源的示意图。其中，图11A表示包括4个符号，每个符号包括12个RE，最差情况下需要填充11个RE。假设在URLLC业务中，需要尽可能短的时间内传输完毕，则可采用图11中的11B所示的传输资源，包括2个符号，每个符号包括24个RE。为了使得MAC数据充满所分配的所有物理层的符号，图11中的11B中尾符号中可能需要填充的冗余数据就越多，即padding部分越长，虽然传输时延比图11中的11A小，但是一旦需要填充，最差的情况下需要填充23个RE，填充冗余在传输数据中占据的比例较多，造成资源更大的浪费。因此，在URLLC业务中，可以根据本申请实施例提供的传输控制方法压缩尾符号，从而可以减少填充的冗余数据，提高了传输资源的利用率。
可选的，在步骤S104之后，上述方法还包括步骤S105-S106或105a-106b：
S105、第一设备在传输资源上向第二设备发送数据。
传输资源中的特定符号采用压缩指示所指示的Numerology，传输资源中除特定符号之外的其他符号采用第一指示所指示的Numerology。
S106、第二设备在传输资源上接收来自第一设备的数据。
或者，
S105a、第一设备在传输资源上接收来自第二设备的数据。
S106a、第二设备在传输资源上向第一设备发送数据。
本申请实施例提供的传输控制方法，可以实现在传输资源上传输数据，该传输资源为对特定符号进行压缩后的符号，避免了传输数据时增加过多的冗余数据或传输过多的非有效数据，从而节省了传输开销。
需要说明的是，本申请实施例中的传输控制方法可适用于基于OFDM的各种通信系统，包括移动通信系统和无线局域网络(wireless local area networks，WLAN)系统。WLAN系统为基于802.11标准协议的系统，使用射频(radio frequency，RF)的技术，通过电磁波在空中进行通信连接。WLAN系统中，通信的两个设备都可实现第一设备和第二设备的功能，例如UE和AP通信时，当UE向AP发送数据时，UE为第一设备，AP为第二设备；当AP向UE发送时，UE为第二设备，AP为第一设备。本申请实施例对此不作具体限定。
需要说明的是，在WLAN系统中也可以采用本申请实施例的传输控制方法对传输帧中的物理头中传输长训练域(long training field，LTF)的符号和/或传输帧中数据域的尾符号进行传输控制。
可选的，长训练域可以包括802.11n中的高吞吐量-长期演进(high throughput-long term evolution，HT-LTE)、802.11ac中的甚高吞吐量-长训练域(very high throughput-LTF，VHT-LTF)、802.11ax中的高吞吐量-长训练域(high throughput-LTF，HE-LTF)。这些域的作用类似于移动通信系统中DMRS，用于信道估计，可以采用本申请实施例中的传输控制方法对上述域中的符号进行压缩处理。
其中，确定数据域的尾符号的Numerology可参考上述传输资源中的尾符号的 Numerology确定方法。首先，确定数据域的尾符号填充的有效复数值的个数，其中，数据域的尾符号填充的有效复数值的个数，即根据上述公式(1)或(3)确定的U。其次，根据数据域的尾符号填充的复数值的个数确定数据域的尾符号的子载波间隔，即根据上述公式(2)确定N2。确定传输长训练域的符号的子载波间隔可参考上述实施例中的第二符号的子载波间隔的方法，此处不再赘述。
可选的，第一指示可以承载在信令域(signal，SIG)中，当第一指示为预定义时，第二设备不需要第一指示即可确定第一符号的Numerology。压缩指示由第一设备生成，并承载在传输帧的物理头中传输给第二设备。示例性的，第一设备将压缩指示承载在物理头的SIG中。当数据域中除尾符号外其他符号的子载波间隔为基准符号的子载波间隔，CP长度可变时，第一指示也可承载在SIG域中。
示例性的，本申请实施例中的压缩指示和第一指示均可携带在802.11ax的帧结构中，图12为本申请实施例提供的802.11ax的帧格式，包括：传统-短训练域(legacy-short training field，L-STF)、传统-长训练域(legacy-long training field，L-LTF)、传统信令域(legacy-signal，L-SIG)、RL信令域(RL-signal，RL-SIG)、高效率-信令域-A(high efficiency-signal-A，HE-SIG-A)、高效率-短训练域(high efficiency-short training field，HE-STF)、高效率-长训练域(high efficiency-long training field，HE-LTF)和数据域；其中，除数据域之外的部分可统称为物理头部分，数据域包括N个符号，N为正整数，本申请实施例中的尾符号也可以包括数据域的尾符号。其中，压缩指示和第一指示可携带在传输帧的物理头的HE-SIG-A域中。例如，压缩指示可以指示传输HE-LTF的符号的Numerology。本申请实施例对此不作具体限定。
通常，在WLAN中，传输帧中的每个符号的CP部分和数据部分是相互独立的，CP部分不影响数据部分的时长。例如在802.11ax中，数据域中除尾符号之外的其他符号的子载波间隔通常是固定为78.125kHz，数据域中的CP长度可以为0.8μs，1.6μs，或3.2μs。相应的，根据本申请提供的传输控制方法，尾符号的子载波间隔可以为数据域中除尾符号之外的其他符号的子载波间隔的整数倍，例如尾符号的子载波间隔可以为78.125kHz、156.25kHz或312.5kHz中的任意一个，而尾符号的CP长度仍然可以为0.8μs，1.6μs，或3.2μs，本申请实施例对于数据域的尾符号的CP长度不作具体限定。
需要说明的是，在WLAN系统中，当特定符号仅包括传输长训练域的符号时，压缩指示用于指示传输长训练域的符号的Numerology；当特定符号仅包括数据域的尾符号时，压缩指示用于指示数据域的尾符号的Numerology；当特定符号包括传输长训练域的符号和数据域的尾符号时，压缩指示用于指示传输长训练域的符号的Numerology和数据域的尾符号的Numerology。
通过本申请实施例提供的传输控制方法，在WLAN系统中，也可以节省传输帧中的传输开销，提高资源的利用率。
需要说明的是，本申请实施例提供的传输控制方法可用于上行数据传输、下行数据传输以及D2D设备之间的数据传输，本申请实施例对此不作具体限定。
上述主要从设备的角度对本申请提供的方案进行介绍，可以理解的是，上述终端为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技 术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对设备进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
比如，在采用对应各个功能划分各个功能模块的情况下，图13示出了上述实施例中所涉及的第一设备1300的一种可能的结构示意图。如图13所示，第一设备1300包括生成模块131和发送模块132。可选的，第一设备还包括接收模块133。生成模块131用于支持第一设备1300执行上述方法实施例中的步骤S101、S101A和S101B；发送模块132用于支持第一设备1300执行上述方法实施例中的步骤S102和S105a；接收模块133用于支持第一设备1300执行上述方法实施例中的步骤S105。其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
以采用集成的方式划分各个功能模块的情况下，图14示出了上述实施例中所涉及的第一设备1400的一种可能的结构示意图。如图14所示，第一设备1400包括处理模块141和通信模块142。处理模块141用于支持第一设备1400执行上述方法实施例的步骤S101、S101A和S101B；通信模块142用于支持上述方法实施例中的步骤S102、S105和S105a。其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
比如，在采用对应各个功能划分各个功能模块的情况下，图15示出了上述实施例中所涉及的第二设备1500的一种可能的结构示意图。如图15所示，第二设备1500包括接收模块151和确定模块152。可选的，第二设备还包括发送模块153。接收模块151用于支持第二设备1500执行上述方法实施例中的步骤S103和S106；确定模块152用于支持第二设备1500执行上述方法实施例中的步骤S104；发送模块153用于支持第二设备1500执行上述方法实施例中的步骤S106a。其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
以采用集成的方式划分各个功能模块的情况下，图16示出了上述实施例中所涉及的第二设备1600的一种可能的结构示意图。如图16所示，第二设备1600包括处理模块161和通信模块162。处理模块161用于支持第二设备1600执行上述方法实施例的步骤S104；通信模块162用于支持第二设备1600执行上述方法实施例中的步骤S103、S106和S106a。其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
图17为本申请实施例提供的一种第一设备的硬件结构示意图。第一设备1700包括：至少一个处理器1701、存储器1702、通信接口1703以及通信总线1704。
处理器1701可以是一个通用中央处理器(英文：central processing unit，CPU)，微处理器，特定应用集成电路(英文：application-specific integrated circuit，ASIC)，或一个或多个用于控制本申请方案程序执行的集成电路。
在第一设备通过图17中的硬件结构来实现的情况下，处理器1701可以用于支持第一设备执行上述方法实施例中的步骤S101、S101A、S101B和/或用于本申请所描述的技术的其他过程，即处理器1701可以完成上述如图14所示的处理模块1401所执行的所有步骤。
通信总线1704可包括一通路，在上述组件之间传送信息。通信总线1704可以是外设部件互连标准(peripheral component interconnect，PCI)通信总线或扩展工业标准结构(extended industry standard architecture，EISA)通信总线等。上述通信总线1704可以分为地址总线、数据总线、控制总线等。为便于表示，图17中仅用一条粗线表示，但并不表示仅有一根通信总线或一种类型的通信总线。
通信接口1703使用任何收发器一类的装置，用于与其他设备或通信网络通信，如以太网，无线接入网(英文：radio access network，RAN)，无线局域网(英文：wireless local area networks，WLAN)等。
在第一设备通过图17中的硬件结构来实现的情况下，通信接口1703可以用于支持第一设备执行上述方法实施例中的步骤S102、S105、S105a和/或用于本申请所描述的技术的其他过程，即通信接口1704可以完成上述如图14所示的通信模块1402所执行的所有步骤。
存储器1702可以是只读存储器(英文：read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(英文：random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(英文：electrically erasable programmable read-only memory，EEPROM)、只读光盘(英文：compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器可以是独立存在，通过总线与处理器相连接。存储器也可以和处理器集成在一起。
其中，存储器1702用于存储执行本申请方案的应用程序代码，并由处理器1701来控制执行。处理器1701用于执行存储器1702中存储的应用程序代码，从而实现本申请实施例中的传输控制方法。
在具体实现中，作为一种实施例，处理器1701可以包括一个或多个CPU，例如图17中的CPU0和CPU1。
在具体实现中，作为一种实施例，第一设备1700可以包括多个处理器，例如图17中的处理器1701和处理器1708。这些处理器中的每一个可以是一个单核(英文：single-CPU)处理器，也可以是一个多核(英文：multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
在具体实现中，作为一种实施例，第一设备1700还可以包括输出设备1705和输入设备1706。输出设备1705和处理器1701通信，可以以多种方式来显示信息。例如， 输出设备1705可以是液晶显示器(英文：liquid crystal display，LCD)，发光二级管(英文：light emitting diode，LED)显示设备，阴极射线管(英文：cathode ray tube，CRT)显示设备，或投影仪(英文：projector)等。输入设备1706和处理器1701通信，可以以多种方式接受用户的输入。例如，输入设备1906可以是鼠标、键盘、触摸屏设备或传感设备等。
上述的第一设备1700可以是一个通用计算机设备或者是一个专用计算机设备。在具体实现中，第一设备1700可以是台式机、便携式电脑、网络服务器、掌上电脑(英文：personal digital assistant，PDA)、移动手机、平板电脑、无线终端设备、通信设备、嵌入式设备或有图19中类似结构的设备。本申请实施例不限定第一设备1700的类型。
图18为本申请实施例提供的一种第二设备的硬件结构示意图。第二设备1800包括：一个或多个处理器1801、存储器1802、通信接口1803以及总线1804。其中一个或多个处理器1801、存储器1802、通信接口1803以及总线1804等可参考上述对第一设备1700的描述，在此不再赘述。
其中，在第二设备通过图18中的硬件结构来实现的情况下，处理器1801可以用于支持第二设备执行上述方法实施例中的步骤S104和/或用于本申请所描述的技术的其他过程，即处理器1801可以完成上述如图16所示的处理模块1602所执行的所有步骤。
在第二设备通过图18中的硬件结构来实现的情况下，通信接口1803可以用于支持第二设备执行上述方法实施例中的步骤S103、S106、S106a和/或用于本申请所描述的技术的其他过程，即通信接口1803可以完成上述如图16所示的通信模块1602所执行的所有步骤。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件程序实现时，可以全部或部分地以计算机程序产品的形式来实现。该计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或者数据中心通过有线(例如同轴电缆、光纤、数字用户线(Digital Subscriber Line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可以用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)，光介质(例如，DVD)、或者半导体介质(例如固态硬盘(Solid State Disk，SSD))等。
尽管在此结合各实施例对本申请进行了描述，然而，在实施所要求保护的本申请过程中，本领域技术人员通过查看所述附图、公开内容、以及所附权利要求书，可理解并实现所述公开实施例的其他变化。在权利要求中，“包括”(comprising)一词不排除其他组成部分或步骤，“一”或“一个”不排除多个的情况。单个处理器或其他单元可 以实现权利要求中列举的若干项功能。相互不同的从属权利要求中记载了某些措施，但这并不表示这些措施不能组合起来产生良好的效果。
尽管结合具体特征及其实施例对本申请进行了描述，显而易见的，在不脱离本申请的精神和范围的情况下，可对其进行各种修改和组合。相应地，本说明书和附图仅仅是所附权利要求所界定的本申请的示例性说明，且视为已覆盖本申请范围内的任意和所有修改、变化、组合或等同物。显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (50)

  1. 一种传输控制方法，应用于正交频分复用OFDM系统，其特征在于，所述方法包括：
    第一设备生成传输控制信息，所述传输控制信息包括资源指示信息、压缩指示和第一指示；其中，所述资源指示信息用于指示所述第一设备为第二设备分配的传输资源，所述传输资源包括至少两个符号，所述压缩指示用于指示所述传输资源中特定符号的参数集Numerology，所述特定符号包括尾符号和/或第二符号，所述尾符号为所述传输资源中最后一个符号，所述第二符号为所述传输资源中仅传输解调参考信号DMRS的符号，所述第二符号包括至少一个符号，所述第一指示用于指示所述传输资源中除所述特定符号之外的符号的Numerology；
    所述第一设备向所述第二设备发送所述传输控制信息。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述第一设备在所述传输资源上向所述第二设备发送数据或者接收来自所述第二设备的数据，所述传输资源中的所述特定符号采用所述压缩指示所指示的Numerology，所述传输资源中除所述特定符号之外的其他符号采用所述第一指示所指示的Numerology。
  3. 根据权利要求1或2所述的方法，其特征在于，所述特定符号仅包括所述尾符号，所述压缩指示用于指示所述尾符号的Numerology。
  4. 根据权利要求1或2所述的方法，其特征在于，所述特定符号仅包括所述第二符号，所述压缩指示用于指示所述第二符号的Numerology。
  5. 根据权利要求1或2所述的方法，其特征在于，所述特定符号包括所述尾符号和所述第二符号，所述压缩指示用于指示所述尾符号的Numerology和所述第二符号的Numerology。
  6. 根据权利要求1或4或5所述的方法，其特征在于，
    所述第二符号的Numerology中包括所述第二符号的子载波间隔，所述第二符号的子载波间隔为第一符号的子载波间隔的整数倍，所述第一符号为所述传输资源中非所述特定符号的符号。
  7. 根据权利要求1或3或5所述的方法，其特征在于，
    所述尾符号的Numerology中包括所述尾符号的子载波间隔，所述尾符号的子载波间隔为所述第一符号的子载波间隔的整数倍。
  8. 根据权利要求7所述的方法，其特征在于，
    所述尾符号的子载波间隔为所述第一设备基于公式U＝L mod V确定的；
    其中，U表示所述尾符号中填充的有效数据映射的复数的个数，L表示有效数据映射的复数的总个数，V表示所述第一符号的子载波的个数；
    Figure PCTCN2017101310-appb-100001
    其中，N1表示所述第一符号的子载波间隔，N2表示所述尾符号的子载波间隔，n为正整数。
  9. 根据权利要求7所述的方法，其特征在于，
    当所述传输资源包括第三符号，所述尾符号的子载波间隔为所述第一设备基于公式U＝(L-Q)mod V确定的，所述第三符号为有效数据和DMRS信号混合传输的符号；
    其中，U表示所述尾符号中填充的有效数据映射的复数的个数，L表示有效数据映射的复数的总个数，V表示所述第一符号的子载波的个数，Q表示所有所述第三符号中所述有效数据映射的复数的个数；
    Figure PCTCN2017101310-appb-100002
    其中，N1表示所述第一符号的子载波间隔，N2表示所述尾符号的子载波间隔，n为正整数。
  10. 根据权利要求8或9所述的方法，其特征在于，所述方法还包括：
    所述特定符号的Numerology包括循环前缀CP长度，所述特定符号的CP长度T1为所述第一设备基于公式
    Figure PCTCN2017101310-appb-100003
    确定的，其中，T为所述第一符号的CP长度，Ni为所述特定符号的子载波间隔。
  11. 根据权利要求1或3-6任一项所述的方法，其特征在于，所述第一设备向所述第二设备发送所述传输控制信息，包括：
    所述第一设备将所述资源指示信息、所述压缩指示和所述第一指示承载在相同消息或者不同消息中向所述第二设备发送。
  12. 根据权利要求11所述的方法，其特征在于，
    所述第一指示可承载在下行控制信息DCI中、承载在媒体访问控制层控制元素MAC CE中、承载在主系统信息块MIB中、承载在系统信息块SIB中、承载在广播消息中、承载在无线资源控制RRC信令中、承载在组公共下行控制信息group common DCI中或者承载在传输帧的物理头中。
  13. 根据权利要求11或12所述的方法，其特征在于，
    当所述特定符号仅包括所述尾符号，或者所述特定符号包括所述尾符号和所述第二符号时，所述压缩指示承载在DCI中或者承载在传输帧的物理头中；
    当所述特定符号仅包括所述第二符号时，所述压缩指示承载在DCI中、承载在MAC CE中、承载在MIB中、承载在SIB中、承载在RRC信令中、承载在group common DCI中或者承载在传输帧的物理头中。
  14. 一种传输控制方法，应用于正交频分复用OFDM系统，其特征在于，所述方法包括：
    第二设备接收第一设备发送的传输控制信息，所述传输控制信息包括资源指示信息、压缩指示和第一指示；其中，所述资源指示信息用于指示所述第一设备为所述第二设备分配的传输资源，所述传输资源包括至少两个符号，所述压缩指示用于指示所述传输资源中特定符号的参数集Numerology，所述特定符号包括尾符号和/或第二符号，所述尾符号为所述传输资源中最后一个符号，所述第二符号为所述传输资源中仅传输解调参考信号DMRS的符号，所述第二符号包括至少一个符号，所述第一指示用于指示所述传输资源中除所述特定符号之外的符号的Numerology；
    所述第二设备根据所述资源指示信息确定所述传输资源，根据所述压缩指示确定所述传输资源中特定符号的Numerology，根据所述第一指示确定所述传输资源中除特定符号之外符号的Numerology。
  15. 根据权利要求14所述的方法，其特征在于，所述方法还包括：
    所述第二设备在所述传输资源上向所述第一设备发送数据或者接收来自所述第一设备的数据，所述传输资源中的所述特定符号采用所述压缩指示所指示的Numerology，所述传输资源中除所述特定符号之外的其他符号采用所述第一指示所指示的Numerology。
  16. 根据权利要求14或15所述的方法，其特征在于，所述特定符号仅包括所述尾符号，所述压缩指示用于指示所述尾符号的Numerology。
  17. 根据权利要求14或15所述的方法，其特征在于，所述特定符号仅包括所述第二符号，所述压缩指示用于指示所述第二符号的Numerology。
  18. 根据权利要求14或15所述的方法，其特征在于，所述特定符号包括所述尾符号和所述第二符号，所述压缩指示用于指示所述尾符号的Numerology和所述第二符号的Numerology。
  19. 根据权利要求14或17或18所述的方法，其特征在于，
    所述第二符号的Numerology中包括所述第二符号的子载波间隔，所述第二符号的子载波间隔为第一符号的子载波间隔的整数倍，所述第一符号为所述传输资源中非所述特定符号的符号。
  20. 根据权利要求14或16或18所述的方法，其特征在于，
    所述尾符号的Numerology中包括所述尾符号的子载波间隔，所述尾符号的子载波间隔为所述第一符号的子载波间隔的整数倍。
  21. 根据权利要求14所述的方法，其特征在于，第二设备接收第一设备发送的传输控制信息，包括：
    所述第二设备接收所述第一设备发送的所述资源指示信息、所述压缩指示和所述第一指示承载在相同消息或者不同消息中。
  22. 根据权利要求21所述的方法，其特征在于，
    所述第一指示可承载在下行控制信息DCI中、承载在媒体访问控制层控制元素MAC CE中、承载在主系统信息块MIB中、承载在系统信息块SIB中、承载在广播消息中、承载在无线资源控制RRC信令中、承载在组公共下行控制信息group common DCI中或者承载在传输帧的物理头中。
  23. 根据权利要求22所述的方法，其特征在于，
    当所述特定符号仅包括所述尾符号，或者所述特定符号包括所述尾符号和所述第二符号时，所述压缩指示承载在DCI中或者承载在传输帧的物理头中；
    当所述特定符号仅包括所述第二符号时，所述压缩指示承载在DCI中、承载在MAC CE中、承载在MIB中、承载在SIB中、承载在RRC信令中、承载在group common DCI中或者承载在传输帧的物理头中。
  24. 一种第一设备，其特征在于，所述第一设备包括：生成模块和发送模块；
    所述生成模块，用于：
    生成传输控制信息，所述传输控制信息包括资源指示信息、压缩指示和第一指示；其中，所述资源指示信息用于指示所述第一设备为第二设备分配的传输资源，所述传输资源包括至少两个符号，所述压缩指示用于指示所述传输资源中特定符号的参数集Numerology，所述特定符号包括尾符号和/或第二符号，所述尾符号为所述传输资源中最后一个符号，所述第二符号为所述传输资源中仅传输解调参考信号DMRS的符号，所述第二符号包括至少一个符号，所述第一指示用于指示所述传输资源中除所述特定符号之外的符号的Numerology；
    所述发送模块，用于：
    向所述第二设备发送所述传输控制信息。
  25. 根据权利要求24所述的第一设备，其特征在于，所述第一设备还包括接收模块；
    所述发送模块，还用于在所述传输资源上向所述第二设备发送数据；
    所述接收模块，用于在所述传输资源上接收来自所述第二设备的数据；所述传输资源中的所述特定符号采用所述压缩指示所指示的Numerology，所述传输资源中除所述特定符号之外的其他符号采用所述第一指示所指示的Numerology。
  26. 根据权利要求24或25所述的第一设备，其特征在于，所述特定符号仅包括所述尾符号，所述压缩指示用于指示所述尾符号的Numerology。
  27. 根据权利要求24或25所述的第一设备，其特征在于，所述特定符号仅包括所述第二符号，所述压缩指示用于指示所述第二符号的Numerology。
  28. 根据权利要求24或25所述的第一设备，其特征在于，所述特定符号包括所述尾符号和所述第二符号，所述压缩指示用于指示所述尾符号的Numerology和所述第二符号的Numerology。
  29. 根据权利要求24或27或28所述的第一设备，其特征在于，
    所述第二符号的Numerology中包括所述第二符号的子载波间隔，所述第二符号的子载波间隔为第一符号的子载波间隔的整数倍，所述第一符号为所述传输资源中非所述特定符号的符号。
  30. 根据权利要求24或26或28所述的第一设备，其特征在于，
    所述尾符号的Numerology中包括所述尾符号的子载波间隔，所述尾符号的子载波间隔为所述第一符号的子载波间隔的整数倍。
  31. 根据权利要求30所述的第一设备，其特征在于，所述尾符号的子载波间隔为所述第一设备基于公式U＝L mod V确定的；
    其中，U表示所述尾符号中填充的有效数据映射的复数的个数，L表示有效数据映射的复数的总个数，V表示所述第一符号的子载波的个数；
    Figure PCTCN2017101310-appb-100004
    其中，N1表示所述第一符号的子载波间隔，N2表示所述尾符号的子载波间隔，n为正整数。
  32. 根据权利要求30所述的第一设备，其特征在于，
    当所述传输资源包括第三符号，所述尾符号的子载波间隔为所述第一设备基于公 式U＝(L-Q)mod V确定的，所述第三符号为有效数据和DMRS信号混合传输的符号；
    其中，U表示所述尾符号中填充的有效数据映射的复数的个数，L表示有效数据映射的复数的总个数，V表示所述第一符号的子载波的个数，Q表示所有所述第三符号中所述有效数据映射的复数的个数；
    Figure PCTCN2017101310-appb-100005
    其中，N1表示所述第一符号的子载波间隔，N2表示所述尾符号的子载波间隔，n为正整数。
  33. 根据权利要求31或32所述的第一设备，其特征在于，
    所述特定符号的Numerology包括循环前缀CP长度，所述特定符号的CP长度T1为所述第一设备基于公式
    Figure PCTCN2017101310-appb-100006
    确定的，其中，T为所述第一符号的CP长度，Ni为所述特定符号的子载波间隔。
  34. 根据权利要求24或26-29任一项所述的第一设备，其特征在于，
    所述发送模块，具体用于将所述资源指示信息、所述压缩指示和所述第一指示承载在相同消息或者不同消息中向所述第二设备发送。
  35. 根据权利要求34所述的第一设备，其特征在于，
    所述第一指示可承载在下行控制信息DCI中、承载在媒体访问控制层控制元素MAC CE中、承载在主系统信息块MIB中、承载在系统信息块SIB中、承载在广播消息中、承载在无线资源控制RRC信令中、承载在组公共下行控制信息group common DCI中或者承载在传输帧的物理头中。
  36. 根据权利要求34或35所述的第一设备，其特征在于，
    当所述特定符号仅包括所述尾符号，或者所述特定符号包括所述尾符号和所述第二符号时，所述压缩指示承载在DCI中或者承载在传输帧的物理头中；
    当所述特定符号仅包括所述第二符号时，所述压缩指示承载在DCI中、承载在MAC CE中、承载在MIB中、承载在SIB中、承载在RRC信令中、承载在group common DCI中或者承载在传输帧的物理头中。
  37. 一种第二设备，其特征在于，所述第二设备包括：接收模块和确定模块；
    所述接收模块，用于：
    接收第一设备发送的传输控制信息，所述传输控制信息包括资源指示信息、压缩指示和第一指示；其中，所述资源指示信息用于指示所述第一设备为所述第二设备分配的传输资源，所述传输资源包括至少两个符号，所述压缩指示用于指示所述传输资源中特定符号的参数集Numerology，所述特定符号包括尾符号和/或第二符号，所述尾符号为所述传输资源中最后一个符号，所述第二符号为所述传输资源中仅传输解调参考信号DMRS的符号，所述第二符号包括至少一个符号，所述第一指示用于指示所述传输资源中除所述特定符号之外的符号的Numerology；
    所述确定模块，用于：
    根据所述资源指示信息确定所述传输资源，根据所述压缩指示确定所述传输资源中特定符号的Numerology，根据所述第一指示确定所述传输资源中除特定符号之外符 号的Numerology。
  38. 根据权利要求37所述的第二设备，其特征在于，所述第二设备还包括发送模块；
    所述发送模块，用于在所述传输资源上向所述第一设备发送数据；
    所述接收模块，还用于在所述传输资源上接收来自所述第一设备的数据；所述传输资源中的所述特定符号采用所述压缩指示所指示的Numerology，所述传输资源中除所述特定符号之外的其他符号采用所述第一指示所指示的Numerology。
  39. 根据权利要求37或38所述的第二设备，其特征在于，所述特定符号仅包括所述尾符号，所述压缩指示用于指示所述尾符号的Numerology。
  40. 根据权利要求37或38所述的第二设备，其特征在于，所述特定符号仅包括所述第二符号，所述压缩指示用于指示所述第二符号的Numerology。
  41. 根据权利要求37或38所述的第二设备，其特征在于，所述特定符号包括所述尾符号和所述第二符号，所述压缩指示用于指示所述尾符号的Numerology和所述第二符号的Numerology。
  42. 根据权利要求37或40或41所述的第二设备，其特征在于，所述第二符号的Numerology中包括所述第二符号的子载波间隔，所述第二符号的子载波间隔为第一符号的子载波间隔的整数倍，所述第一符号为所述传输资源中非所述特定符号的符号。
  43. 根据权利要求37或39或41所述的第二设备，其特征在于，所述尾符号的Numerology中包括所述尾符号的子载波间隔，所述尾符号的子载波间隔为所述第一符号的子载波间隔的整数倍。
  44. 根据权利要求37所述的第二设备，其特征在于，
    所述接收模块，具体用于接收所述第一设备发送的所述资源指示信息、所述压缩指示和所述第一指示承载在相同消息或者不同消息中。
  45. 根据权利要求44所述的第二设备，其特征在于，
    所述第一指示可承载在下行控制信息DCI中、承载在媒体访问控制层控制元素MAC CE中、承载在主系统信息块MIB中、承载在系统信息块SIB中、承载在广播消息中、承载在无线资源控制RRC信令中、承载在组公共下行控制信息group common DCI中或者承载在传输帧的物理头中。
  46. 根据权利要求45所述的第二设备，其特征在于，
    当所述特定符号仅包括所述尾符号，或者所述特定符号包括所述尾符号和所述第二符号时，所述压缩指示承载在DCI中或者承载在传输帧的物理头中；
    当所述特定符号仅包括所述第二符号时，所述压缩指示承载在DCI中、承载在MAC CE中、承载在MIB中、承载在SIB中、承载在RRC信令中、承载在group common DCI中或者承载在传输帧的物理头中。
  47. 一种第一设备，其特征在于，包括：处理器、存储器和通信接口；
    所述存储器用于存储计算机执行指令，当所述第一设备运行时，所述处理器执行所述存储器存储的所述计算机执行指令，以使所述第一设备执行如权利要求1-13中任意一项所述的传输控制方法。
  48. 一种第二设备，其特征在于，包括：处理器、存储器和通信接口；
    所述存储器用于存储计算机执行指令，当所述第二设备运行时，所述处理器执行所述存储器存储的所述计算机执行指令，以使所述第二设备执行如权利要求14-23中任意一项所述的传输控制方法。
  49. 一种计算机可读存储介质，其特征在于，包括计算机指令，当其在计算机上运行时，使得计算机执行如权利要求1-13或如权利要求14-23中任意一项所述的传输控制方法。
  50. 一种包含指令的计算机程序产品，其特征在于，当其在计算机上运行时，使得计算机执行如权利要求1-13或如权利要求14-23中任意一项所述的传输控制方法。
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