WO2017101046A1 - Procédé de transmission de trame radio, station de base et équipement utilisateur - Google Patents

Procédé de transmission de trame radio, station de base et équipement utilisateur Download PDF

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Publication number
WO2017101046A1
WO2017101046A1 PCT/CN2015/097602 CN2015097602W WO2017101046A1 WO 2017101046 A1 WO2017101046 A1 WO 2017101046A1 CN 2015097602 W CN2015097602 W CN 2015097602W WO 2017101046 A1 WO2017101046 A1 WO 2017101046A1
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lte
harq
rat
symbol
ack
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PCT/CN2015/097602
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English (en)
Chinese (zh)
Inventor
黄雯雯
赵悦莹
邓天乐
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华为技术有限公司
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Priority to PCT/CN2015/097602 priority Critical patent/WO2017101046A1/fr
Publication of WO2017101046A1 publication Critical patent/WO2017101046A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method for transmitting a radio frame, a base station, and a user equipment.
  • the development trend of the 5th Generation (5th Generation, 5th Generation Mobile Communication Technology) system is the common networking of multi-RAT (radio access technology).
  • the first phase of 5G development may be LTE (Long Term Evolution) as the main RAT and 5G technology as the thin lean RAT.
  • the 5G RAT is only used to transmit user plane data, and the LTE RAT is used to transmit 5G control plane data.
  • the transmission time intervals of the two are different, so the two RATs cannot be used in the form of CA (carrier aggregation).
  • CA carrier aggregation
  • the embodiment of the present invention provides a method for transmitting a radio frame, a base station, and a user equipment, so as to carry the feedback information corresponding to the 5G downlink/uplink data through the LTE uplink/downlink channel, so as to implement the control message required by the 5G RAT in the LTE RAT.
  • the uplink transmission is beneficial to improving the data transmission efficiency of the hybrid networking communication system composed of the 5G RAT and the LTE RAT.
  • a first aspect of the embodiments of the present invention provides a method for transmitting a radio frame, including:
  • the base station sends, to the user equipment, a 5G downlink subframe of the fifth generation mobile communication technology 5G radio access technology RAT carrying the first data;
  • the user equipment carries the feedback information on a first symbol of an LTE uplink subframe of a long term evolution LTE RAT;
  • the eNB receives the LTE uplink subframe of the LTE RAT that carries the feedback information that is sent by the user equipment.
  • the mode of the LTE RAT and the 5G RAT is a frequency division duplex FDD mode
  • the feedback information includes 5G hybrid automatic repeat request feedback HARQ-ACK information corresponding to the first data;
  • the first symbol includes a kth LTE symbol after the 5G downlink subframe, and the k is a positive integer greater than or equal to 1.
  • the spreading gain of the feedback message in the first symbol of the LTE uplink subframe is greater than or equal to a spreading gain of the LTE HARQ-ACK information
  • the first symbol includes at least 8 resource blocks RB in the frequency domain.
  • the first symbol includes n HARQ-ACK subbands, each of the HARQ-ACK subbands includes at least 8 resource blocks RB, and the n is a positive integer greater than or equal to 2;
  • the 5G HARQ-ACK information includes n HARQ-ACK information corresponding to n codewords of the 5G multi-carrier;
  • the n HARQ-ACK subbands are used to carry the n HARQ-ACK information.
  • the mode of the LTE RAT and the 5G RAT is a time division duplex TDD mode
  • the feedback information includes 5G HARQ-ACK information corresponding to the first data
  • the 5G downlink subframe includes m 5G downlink subframes of the 5G RAT, where the m is an integer greater than 1;
  • the first symbol includes at least a kth LTE symbol after a last subframe of the m 5G downlink subframes, where k is a positive integer greater than or equal to 1.
  • a second aspect of the embodiments of the present invention provides a method for transmitting a radio frame, including:
  • the user equipment sends a 5G uplink subframe of the fifth generation mobile communication technology 5G radio access technology RAT carrying the second data to the base station;
  • the base station carries the feedback information in a second symbol of an LTE downlink subframe of a long term evolution LTE RAT;
  • the user equipment receives the LTE downlink subframe.
  • the mode of the LTE RAT and the 5G RAT is a frequency division duplex FDD mode
  • the feedback information includes 5G hybrid automatic repeat request HARQ-ACK information corresponding to the second data;
  • the second symbol includes a kth LTE symbol after the 5G uplink subframe, and the k is a positive integer greater than or equal to 1.
  • the spreading gain of the feedback message in the second symbol of the LTE downlink subframe is greater than or equal to a spreading gain of the LTE HARQ-ACK information
  • the second symbol includes at least 8 resource blocks RB.
  • the second symbol includes n HARQ-ACK subbands, each of the HARQ-ACK subbands includes at least 8 resource blocks RB, and the n is a positive integer greater than or equal to 2;
  • the 5G HARQ-ACK information includes n corresponding to n codewords of 5G multi-carrier HARQ-ACK information
  • the n HARQ-ACK subbands are used to carry the n HARQ-ACK information.
  • the mode of the LTE RAT and the 5G RAT is a time division duplex TDD mode
  • the feedback information includes 5G HARQ-ACK information corresponding to the second data
  • the 5G uplink subframe includes m 5G uplink subframes of a 5G RAT, where the m is a positive integer greater than one;
  • the second symbol includes at least a kth LTE symbol after a last subframe of the m 5G uplink subframes, where k is a positive integer greater than or equal to 1.
  • the feedback information includes 5G HARQ-ACK information corresponding to the second data
  • the second symbol includes a kth LTE symbol after the 5G uplink subframe, where the kth LTE symbol belongs to a data region of the LTE downlink subframe, where k is an integer greater than or equal to 1. .
  • a third aspect of the embodiments of the present invention provides a method for transmitting a radio frame, including:
  • the base station sends, to the user equipment, a 5G downlink subframe of the fifth generation mobile communication technology 5G radio access technology RAT carrying the first data;
  • the user equipment carries the feedback information in a first symbol of an LTE uplink subframe of a long term evolution LTE RAT;
  • the base station receives the LTE uplink subframe.
  • the mode of the LTE RAT and the 5G RAT is a frequency division duplex FDD mode
  • the feedback information includes 5G hybrid automatic repeat request HARQ-ACK information corresponding to the first data;
  • the first symbol includes a kth LTE symbol after the 5G downlink subframe, and the k is a positive integer greater than or equal to 1.
  • the spreading gain of the feedback message in the first symbol of the LTE uplink subframe is greater than or equal to a spreading gain of the LTE HARQ-ACK information
  • the first symbol includes at least 8 resource blocks RB in the frequency domain.
  • the first symbol includes n HARQ-ACK subbands, each of the HARQ-ACK subbands includes at least 8 resource blocks RB, and the n is a positive integer greater than or equal to 2;
  • the 5G HARQ-ACK information includes n HARQ-ACK information corresponding to n codewords of the 5G multi-carrier;
  • the n HARQ-ACK subbands are used to carry the n HARQ-ACK information.
  • the mode of the LTE RAT and the 5G RAT is a time division duplex TDD mode
  • the feedback information includes 5G HARQ-ACK information corresponding to the first data
  • the 5G downlink subframe includes m 5G downlink subframes of the 5G RAT, where the m is an integer greater than 1;
  • the first symbol includes at least a kth LTE symbol after a last subframe of the m 5G downlink subframes, where k is a positive integer greater than or equal to 1.
  • a fourth aspect of the embodiments of the present invention provides a method for transmitting a radio frame, including:
  • the base station carries the feedback information in a second symbol of an LTE downlink subframe of a long term evolution LTE RAT;
  • the user equipment receives an LTE downlink subframe of a long term evolution LTE RAT that carries the feedback information sent by the base station.
  • the mode of the LTE RAT and the 5G RAT is a frequency division duplex FDD mode
  • the feedback information includes 5G hybrid automatic repeat request HARQ-ACK information corresponding to the second data;
  • the second symbol includes a kth LTE symbol after the 5G uplink subframe, and the k is a positive integer greater than or equal to 1.
  • the spreading gain of the feedback message in the second symbol of the LTE downlink subframe is greater than or equal to a spreading gain of the LTE HARQ-ACK information
  • the second symbol includes at least 8 resource blocks RB.
  • the second symbol includes n HARQ-ACK subbands, each of the HARQ-ACK subbands includes at least 8 resource blocks RB, and the n is a positive integer greater than or equal to 2;
  • the 5G HARQ-ACK information includes n HARQ-ACK information corresponding to n codewords of the 5G multi-carrier;
  • the n HARQ-ACK subbands are used to carry the n HARQ-ACK information.
  • the mode of the LTE RAT and the 5G RAT is a time division duplex TDD mode
  • the feedback information includes 5G HARQ-ACK information corresponding to the second data
  • the 5G uplink subframe includes m 5G uplink subframes of a 5G RAT, where the m is a positive integer greater than one;
  • the second symbol includes at least a kth LTE symbol after a last subframe of the m 5G uplink subframes, where k is a positive integer greater than or equal to 1.
  • the feedback information includes 5G HARQ-ACK information corresponding to the second data
  • the second symbol includes a kth LTE symbol after the 5G uplink subframe, where the kth LTE symbol belongs to a data region of the LTE downlink subframe, where k is an integer greater than or equal to 1. .
  • a fifth aspect of the embodiments of the present invention provides a base station, including a storage unit, a communication interface, and a processor coupled to the storage unit and the communication interface; the storage unit is configured to store an instruction, and the processor is configured to execute the An instruction, the communication interface is configured to communicate with a user equipment under control of the processor; and when the processor is executing the instruction, performing the instruction in the first aspect or the second aspect according to the instruction The method of transmitting wireless frames.
  • a sixth aspect of the embodiments of the present invention provides a user equipment, including a storage unit, a communication interface, and a processor coupled to the storage unit and the communication interface; the storage unit is configured to store an instruction, and the processor is configured to execute the An instruction, the communication interface is configured to communicate with a user equipment under control of the processor; and when the processor is executing the instruction, performing the third aspect or the fourth aspect according to the instruction The method of transmitting a radio frame.
  • a seventh aspect of the embodiments of the present invention provides a computer readable storage medium storing a program code for transmitting a wireless frame performed by a base station.
  • the program code includes instructions for performing the method in the first aspect.
  • An eighth aspect of the embodiments of the present invention provides a computer readable storage medium storing a program code for transmitting a wireless frame performed by a base station.
  • the program code Instructions are included for performing the method in the second aspect.
  • a ninth aspect of the embodiments of the present invention provides a computer readable storage medium storing program code for transmitting a wireless frame performed by a user equipment.
  • the program code includes instructions for performing the method in the third aspect.
  • a tenth aspect of the embodiments of the present invention provides a computer readable storage medium storing program code for transmitting a wireless frame performed by a user equipment.
  • the program code includes instructions for performing the method in the fourth aspect.
  • An eleventh embodiment of the present invention provides a transmission apparatus for a radio frame applied to a hybrid networking communication system including an LTE RAT and a 5G RAT, wherein the radio frame transmission apparatus includes a unit capable of performing the first aspect and / or the second aspect of the method.
  • a twelfth aspect of the embodiments of the present invention provides a transmission apparatus for a radio frame applied to a hybrid networking communication system including an LTE RAT and a 5G RAT, where the radio frame transmission apparatus includes a unit capable of performing the third aspect and / or the fourth aspect of the method.
  • the LTE uplink subframe includes an uplink portion of an LTE special subframe, and an uplink portion of the LTE special subframe includes the first symbol.
  • the LTE downlink subframe includes a downlink part of an LTE special subframe, and the second symbol is in the LTE downlink subframe.
  • the LTE downlink subframe includes a control area and a data area, where the control area is used to transmit control signaling, and the data area is used to transmit data.
  • the control area is used to transmit control signaling
  • the data area is used to transmit data.
  • the first 3 symbols in one LTE downlink subframe are used to transmit control signaling, and the last 4 symbols are used to transmit data.
  • the user equipment and the base station perform radio frame transmission
  • the LTE uplink channel carries the feedback information corresponding to the 5G downlink data, and may carry the feedback information corresponding to the 5G uplink data in the LTE downlink channel, and thus, the LTE uplink/downlink channel carries the feedback information corresponding to the 5G downlink/uplink data, thereby implementing
  • the control message required by the 5G RAT is transmitted on the LTE RAT, which is beneficial to improving the data transmission efficiency of the hybrid network communication system composed of the 5G RAT and the LTE RAT.
  • Figure 1.1 is a simplified application scenario diagram of a hybrid networking communication system consisting of a 5G RAT and an LTE RAT according to an embodiment of the present invention
  • Figure 1.2 is a diagram showing an example of the structure of an LTE radio frame according to an embodiment of the present invention.
  • FIG. 1.3 is a schematic diagram of a LTE downlink time-frequency domain resource grid according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a method for transmitting a radio frame according to an embodiment of the present invention
  • FIG. 2.1 is a schematic diagram of 5G HARQ-ACK information corresponding to downlink data of an LTE uplink subframe carrying a 5G RAT in an FDD LTE network according to an embodiment of the present disclosure
  • FIG. 2.2 is a schematic diagram showing a partial structure of a 5G downlink subframe and an LTE uplink subframe in FIG. 2.1 according to an embodiment of the present disclosure
  • FIG. 2.3 is a diagram showing an example of dividing a full bandwidth of one symbol into two sub-bandwidths according to an embodiment of the present invention.
  • Figure 2.4 is a diagram showing an example of dividing a full bandwidth of an LTE RB resource into four sub-bandwidths according to an embodiment of the present invention
  • Figure 2.5 is a schematic diagram of the HARQ-ACK information binding of multiple 5G downlink subframes in the LTE uplink subframe transmitted on the same LTE symbol according to the embodiment of the present invention
  • FIG. 3 is a schematic flowchart diagram of another method for transmitting a radio frame according to an embodiment of the present invention.
  • FIG. 3.1 is a schematic diagram of 5G HARQ-ACK information corresponding to uplink data of an LTE downlink subframe carrying a 5G RAT in an FDD LTE network according to an embodiment of the present disclosure
  • FIG. 3.2 is a schematic diagram showing a partial structure of a 5G uplink subframe and an LTE downlink subframe in FIG. 3.1 according to an embodiment of the present disclosure
  • FIG. 3.3 is a schematic diagram of transmitting HARQ-ACK information corresponding to multiple 5G uplink subframes on the same LTE symbol in an LTE downlink subframe according to an embodiment of the present disclosure
  • 3.4 is a schematic diagram of a feedback message carrying a 5G RAT uplink subframe of a symbol of an LTE downlink subframe according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of another base station according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of another user equipment according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of still another base station according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of still another user equipment according to an embodiment of the present invention.
  • the technical solution of the embodiment of the present invention can be applied to hybrid network communication of LTE (Long Term Evolution) RAT (radio access technology) and 5G (the 5th generation mobile communication technology) RAT.
  • the LTE RAT may be, for example, an FDD (Frequency Division Dual) system of LTE and/or a TDD (Time Division Duplexing) system of LTE.
  • Figure 1.1 is a simplified application scenario diagram of the hybrid network communication system provided by the embodiment of the present invention. As shown in the figure, the hybrid network communication system includes at least a base station and multiple user equipments in the same cell, where the user The device sends a message to the base station as an uplink transmission, and the base station sends a message to the user equipment, which is called a downlink transmission.
  • the transmission channel is called a channel and includes an uplink channel and a downlink channel.
  • the base station of the embodiment of the present invention includes an LTE RAT base station and a 5G RAT base station.
  • the LTE RAT base station and the 5G RAT base station may be co-station or non-co-located.
  • the specific composition of the base station and the 5G RAT base station is not limited.
  • the User Equipment (UE) of the embodiment of the present invention may include a handheld device having a wireless communication function, an in-vehicle device, a wearable device, a computing device, or other processing device connected to the wireless modem, and various forms of user equipment ( User Equipment (UE), Mobile Station (MS), Terminal, Terminal Equipment, etc.
  • UE User Equipment
  • MS Mobile Station
  • Terminal Equipment Terminal Equipment
  • An LTE radio frame includes 10 subframes, each subframe has 2 slots, and one slot is composed of a plurality of OFDM symbols.
  • Each radio frame has a length of 10 milliseconds, including 10 subframes of 1 millisecond length, as shown in #0 to #9 in the figure.
  • Each symbol is a cyclic prefix (Cyclic Prefix, Abbreviated as CP) and the available symbol time, the number of symbols included in one slot depends on the length of the CP.
  • the subframes of the radio frame are divided into an uplink subframe, a downlink subframe, and a special subframe according to their functions, wherein the uplink subframe is used for carrying Upstream data information or signaling information, the downlink subframe is used to carry downlink data information or signaling information, the uplink part of the special subframe is used for uplink transmission, and the downlink part of the special subframe is used for downlink transmission.
  • the uplink subframe is used for carrying Upstream data information or signaling information
  • the downlink subframe is used to carry downlink data information or signaling information
  • the uplink part of the special subframe is used for uplink transmission
  • the downlink part of the special subframe is used for downlink transmission.
  • FIG. 1.3 is a schematic diagram of the LTE downlink time-frequency domain resource grid.
  • Each element on the resource grid is called a resource element (RE), and the RE is the smallest physical resource in the LTE communication system.
  • An RE can store a modulation symbol.
  • a resource block (RB) contains 6 or 7 consecutive symbols in the time domain and 12 consecutive subcarriers in the frequency domain.
  • the RB in the system bandwidth refers to information on the frequency domain, that is, one RB contains 12 subcarriers.
  • a Resource Element Group (REG) is used to define how to map the downlink physical layer/(MAC/RLC) layer L1/L2 control signaling onto the RE.
  • REG is the basic unit for downlink L1/L2 control signaling for physical resource allocation.
  • One REG contains 4 REs.
  • the base station and the UE may pass Table 1. Determining which transport block of each carrier the respective feedback message corresponds to, the UE may query Table 2, and select one of the four physical uplink control channel (PUCCH) resources to send and send the feedback information. Corresponding 2-bit information.
  • PUCCH physical uplink control channel
  • the HARQ feedback information on the two RATs cannot be jointly encoded in the CA mode because the transmission time interval TTIs of the two are different.
  • FIG. 2 is a schematic flowchart diagram of a method for transmitting a radio frame according to an embodiment of the present invention. As shown in the figure, the process of the method for transmitting a radio frame in this embodiment may include:
  • the base station sends, to the user equipment, a 5G downlink subframe of a fifth generation mobile communication technology 5G radio access technology RAT carrying the first data.
  • the user equipment receives a 5G downlink subframe of a fifth generation mobile communication technology 5G radio access technology RAT that is sent by the base station and carries the first data.
  • the user equipment decodes the first data carried in the 5G downlink subframe to obtain feedback information corresponding to the first data.
  • the user equipment carries the feedback information on a first symbol of an LTE uplink subframe of a long term evolution LTE RAT.
  • the first symbol includes a symbol of a downlink part of an LTE downlink subframe or an LTE special subframe.
  • the user equipment sends an LTE uplink subframe of a long term evolution LTE RAT carrying feedback information to the base station, where the feedback information is that the user equipment receives and decodes the first data product.
  • the feedback information is generated, and the feedback information is carried in the first symbol of the LTE uplink subframe.
  • the base station receives an LTE uplink subframe of a long-term evolution LTE RAT that is sent by the user equipment and carries feedback information, where the feedback information is feedback information generated by the user equipment to receive and decode the first data. And the feedback information is carried in the first symbol of the LTE uplink subframe.
  • the mode of the LTE RAT and the 5G RAT is a frequency division duplex FDD mode
  • the feedback information includes 5G hybrid automatic repeat request HARQ-ACK information corresponding to the first data;
  • the first symbol includes a kth LTE symbol after the 5G downlink subframe, and the k is a positive integer greater than or equal to 1.
  • FIG. 2.1 is a schematic diagram of 5G HARQ-ACK information corresponding to downlink data of an LTE uplink subframe carrying 5G RAT in an FDD wireless communication network according to an embodiment of the present invention
  • FIG. 2.2 is an implementation of the present invention.
  • FIG. 2 is a schematic diagram showing a partial structure of a 5G downlink subframe and an LTE uplink subframe in FIG. 2.1;
  • the LTE transmission time interval (TTI) is 1 ms
  • the 5G TTI is 0.1 ms. That is, one LTE TTI is equal to 10 5G TTIs.
  • the LTE downlink subframe #n (corresponding to the first LTE downlink subframe in FIG. 2.1) transmits LTE HARQ-ACK information in the LTE uplink subframe #n+4.
  • the transmission of the 5G downlink subframe #n+1 may send 5G HARQ-ACK information on the third LTE symbol after the 5G downlink subframe, where the value of k is 3, the k The value needs to consider the processing delay of the receiver.
  • the spreading gain of the feedback message in the first symbol of the LTE uplink subframe is greater than or equal to a spreading gain of the LTE HARQ-ACK information
  • the first symbol includes at least 8 resource blocks RB in the frequency domain.
  • the full bandwidth of one symbol can be divided into two or more sub-bandwidths, and allocated to different carriers and different code words on the carrier, as shown in FIG.
  • the modulation symbols on each carrier can be modulated by high-order modulation, such as 16-order Quadrature Amplitude Modulation (16QAM), to spread the modulation symbols over the larger frequency band.
  • 16QAM Quadrature Amplitude Modulation
  • the first symbol includes n HARQ-ACK subbands, each of the HARQ-ACK subbands includes at least 8 resource blocks RB, and the n is a positive integer greater than or equal to 2;
  • the 5G HARQ-ACK information includes n HARQ-ACK information corresponding to n codewords of the 5G multi-carrier;
  • the n HARQ-ACK subbands are used to carry the n HARQ-ACK information.
  • the base station transmits two codewords to the user equipment on the carriers of the two 5G RATs (the first 5G carrier and the second 5G carrier), and the total of four codewords are respectively the first of the first 5G carrier. a codeword and a second codeword of the first 5G carrier, and a first codeword of the second 5G carrier and a second codeword of the second 5G carrier;
  • the fourth feedback information corresponding to the two codewords HARQ-ACK (3) ACK;
  • the location of the HARQ-ACK subband is the second HARQ-ACK subband HARQ-ACK subband-2.
  • the mode of the LTE RAT and the 5G RAT is a Time Division Duplexing (TDD) mode;
  • the feedback information includes 5G HARQ-ACK information corresponding to the first data
  • the 5G downlink subframe includes m 5G downlink subframes of the 5G RAT, where the m is an integer greater than 1;
  • the first symbol includes at least a kth LTE symbol after a last subframe of the m 5G downlink subframes, where k is a positive integer greater than or equal to 1.
  • the HARQ-ACK information corresponding to the four 5G downlink subframes may be bound to the same LTE symbol in the LTE uplink subframe for transmission.
  • the uplink and downlink ratio of TDD LTE has multiple configurations, and the LTE special subframe (S in the figure) is divided into three parts: a downlink part, a guard interval, and an uplink part.
  • the up-down ratio of 5G is 4:1, and 4 5G can be used.
  • the feedback message corresponding to the data of the row subframe is placed in the same symbol of the uplink part of the LTE special subframe (such as the special subframe S in FIG.
  • the feedback message of the four 5G downlink subframes can pass the HARQ in Table 3.
  • the location of the ACK subband and the transmission information of the HARQ-ACK subband are indicated, or the feedback message of each 5G downlink subframe allocates one HARQ-ACK subband in the LTE symbol, and the delay of the feedback message may be considered by the receiver.
  • the delay and the uplink portion of the LTE special subframe or the location of the LTE uplink subframe are processed.
  • the uplink and downlink ratio of the TDD LTE may be configured in multiple configurations.
  • the present invention does not uniquely limit the uplink and downlink ratio of the TDD LTE.
  • the uplink and downlink ratio of 5G is also only an example, and may have other forms.
  • the present invention does not uniquely limit the format of the 5G frame of the TDD mode.
  • the user equipment and the base station perform radio frame transmission, and may carry feedback information corresponding to the 5G downlink data in the LTE uplink channel, and thus, the LTE uplink channel is used to carry the feedback information corresponding to the 5G downlink data. Therefore, the control message required to implement the 5G RAT is transmitted on the LTE RAT, which is advantageous for improving the data transmission efficiency of the hybrid networking communication system composed of the 5G RAT and the LTE RAT.
  • FIG. 3 is a schematic flowchart diagram of another method for transmitting a radio frame according to an embodiment of the present invention. As shown in FIG. 3, the flow of the method for transmitting a radio frame in this embodiment may include:
  • the user equipment sends, to the base station, a 5G uplink subframe of a fifth generation mobile communication technology 5G radio access technology RAT carrying the second data.
  • the base station receives a 5G uplink subframe of a 5G radio access technology RAT of the fifth generation mobile communication technology that carries the second data that is sent by the user equipment;
  • the base station decodes the second data carried in the 5G uplink subframe to obtain feedback information corresponding to the second data.
  • the base station carries feedback information corresponding to the second data in a second symbol of an LTE downlink subframe of a long term evolution LTE RAT.
  • the second symbol includes a symbol of a downlink part of an LTE downlink subframe or an LTE special subframe.
  • the base station sends, to the user equipment, an LTE downlink subframe of a long term evolution LTE RAT that carries feedback information, where the feedback information is feedback information generated by the base station to receive and decode the second data, and The feedback information is carried in the second symbol of the LTE downlink subframe.
  • the user equipment receives an LTE downlink subframe of a long term evolution LTE RAT that is sent by the base station and carries feedback information, where the feedback information is feedback information generated by the base station to receive and decode the second data, and The feedback information is carried in a second symbol of the LTE downlink subframe.
  • the mode of the LTE RAT and the 5G RAT is a frequency division duplex FDD mode
  • the feedback information includes 5G hybrid automatic repeat request HARQ-ACK information corresponding to the second data;
  • the second symbol includes a kth LTE symbol after the 5G uplink subframe, and the k is a positive integer greater than or equal to 1.
  • FIG. 3.1 is a schematic diagram of 5G HARQ-ACK information corresponding to uplink data of an LTE downlink subframe carrying 5G RAT in an FDD wireless communication network according to an embodiment of the present invention
  • FIG. 3.2 is an implementation of the present invention.
  • the LTE TTI duration is 1 ms
  • the 5G TTI duration is 0.1 ms, that is, one LTE TTI is equal to 10 5G TTIs.
  • the transmission occurring in the LTE uplink subframe #n (corresponding to the first LTE uplink subframe in FIG. 3.1) transmits the LTE HARQ-ACK information in the LTE downlink subframe #n+4.
  • the transmission of the 5G uplink subframe #n+1 may send 5G HARQ-ACK information on the third LTE symbol after the 5G uplink subframe, where k is 3, and the k is The value needs to consider the processing delay of the receiver.
  • the spreading gain of the feedback message in the second symbol of the LTE downlink subframe is greater than or equal to a spreading gain of the LTE HARQ-ACK information
  • the second symbol includes at least 8 resource blocks RB.
  • the full bandwidth of one symbol can be divided into two or more sub-bandwidths, and allocated to different carriers and different code words on the carrier, as shown in FIG.
  • the modulation symbols on each carrier can be spread in a frequency domain over a larger bandwidth using higher order modulation, such as 16QAM.
  • the second symbol includes n HARQ-ACK subbands, each of the HARQ-ACK subbands includes at least 8 resource blocks RB, and the n is a positive integer greater than or equal to 2;
  • the 5G HARQ-ACK information includes n HARQ-ACK information corresponding to n codewords of the 5G multi-carrier;
  • the n HARQ-ACK subbands are used to carry the n HARQ-ACK information.
  • the user equipment sends two codewords to the base station on the two 5G RAT carriers (the first 5G carrier and the second 5G carrier), for a total of four codewords, which are respectively the first of the first 5G carriers. a codeword and a second codeword of the first 5G carrier, and a first codeword of the second 5G carrier and a second codeword of the second 5G carrier;
  • the second feedback information corresponding to the codeword HARQ-ACK(1) ACK
  • the third feedback information corresponding to the first code of the second 5G carrier, HARQ-ACK(2) ACK
  • the location of the -ACK subband is the second HARQ-ACK subband HARQ-ACK subband-2.
  • the mode of the LTE RAT and the 5G RAT is a time division duplex TDD mode
  • the feedback information includes 5G HARQ-ACK information corresponding to the second data
  • the 5G uplink subframe includes m 5G uplink subframes of a 5G RAT, where the m is a positive integer greater than one;
  • the second symbol includes at least a kth LTE symbol after a last subframe of the m 5G uplink subframes, where k is a positive integer greater than or equal to 1.
  • the HARQ-ACK information corresponding to the two 5G uplink subframes may be bound to the same LTE symbol in the LTE downlink subframe for transmission.
  • the uplink and downlink ratio of TDD LTE has multiple configurations.
  • the uplink and downlink ratio of 5G is 4:1, and two 5G uplinks can be used.
  • the feedback message corresponding to the data of the frame is sent in the same symbol of the LTE downlink subframe, and the feedback message of the two 5G uplink subframes may be indicated by the location of the HARQ-ACK subband and the transmission information of the HARQ-ACK subband.
  • the feedback message of each 5G uplink subframe is allocated with one HARQ-ACK subband in the LTE symbol, and the delay of the feedback message may consider the processing delay of the receiver and the downlink part of the LTE special subframe or the LTE downlink subframe. position.
  • the uplink and downlink ratio of the TDD LTE may be configured in multiple configurations.
  • the present invention does not uniquely limit the uplink and downlink ratio of the TDD LTE.
  • the uplink and downlink ratio of 5G is also only an example, and may have other forms.
  • the present invention does not uniquely limit the format of the 5G frame of the TDD mode.
  • the FDD mode of the LTE RAT and the 5G RAT is the FDD mode of the LTE RAT and the 5G RAT.
  • the feedback information includes 5G HARQ-ACK information corresponding to the second data
  • the second symbol includes a kth LTE symbol after the 5G uplink subframe, and the k is an integer greater than or equal to 1.
  • the feedback information includes 5G HARQ-ACK information corresponding to the second data
  • the 5G uplink subframe includes m 5G uplink subframes of a 5G RAT, where the m is a positive integer greater than one;
  • the second symbol includes at least a kth LTE symbol after a last subframe of the m 5G uplink subframes, where k is a positive integer greater than or equal to 1.
  • the 5G HARQ-ACK information corresponding to the second data may be carried by a PHICH (Physical Hybrid ARQ Indicator Channel), and the PHICH is in a data area of the LTE subframe.
  • the LTE downlink subframe specifically includes a control area and a data area, where the control area is used for transmitting control signaling, and the data area is used for transmitting data. For example, the first 3 symbols in one LTE downlink subframe are used to transmit control signaling, and the last 4 symbols are used to transmit data.
  • FIG. 3.4 is a schematic diagram of a feedback message of a 5G RAT uplink subframe of a symbol of an LTE downlink subframe according to an embodiment of the present invention.
  • the PHICH is set in a data area of an LTE symbol, and the PHICH is used to carry feedback information of the 5G RAT uplink subframe.
  • the PHICH channel in the existing LTE RAT can only be on the first symbol of the control region of the LTE downlink subframe, the PHICH channel is always placed on the first symbol, which causes additional delay, which is disadvantageous to the 5G RAT.
  • the PHICH is set in the data area of the LTE symbol, and the feedback message corresponding to the 5G RAT subframe can be transmitted more flexibly.
  • multiple PHICHs are required to carry the HARQ-ACK information of each user.
  • Multiple PHICHs can be mapped on the same RE resource. These same REs are called a PHICH group. That is, one PHICH group can have multiple PHICHs, and different PHICHs of the same group can be distinguished by different orthogonal codes.
  • the UE can determine the PHICH resource by using the PHICH group index and the orthogonal code, so as to obtain the HARQ-ACK information of the PHICH bearer.
  • the above manner can also be used to distinguish HARQ-ACK information on different carriers.
  • the user equipment and the base station perform the radio frame transmission, and may carry the feedback information corresponding to the 5G uplink data in the LTE downlink channel, and thus, the LTE downlink channel is used to carry the feedback information corresponding to the 5G uplink data. Therefore, the control message required to implement the 5G RAT is transmitted on the LTE RAT, which is advantageous for improving the data transmission efficiency of the hybrid networking communication system composed of the 5G RAT and the LTE RAT.
  • FIG. 4 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • the base station is a base station in a method for transmitting a radio frame described in FIG.
  • the base station in the embodiment of the present invention may include at least a radio frame sending module 401 and a feedback information receiving module 402, where:
  • the radio frame sending module 401 is configured to send, to the user equipment, a 5G downlink subframe of a fifth generation mobile communication technology 5G radio access technology RAT carrying the first data;
  • the feedback information receiving module 402 is configured to receive an LTE uplink subframe of the Long Term Evolution (LTE) LTE that carries the feedback information that is sent by the user equipment, where the feedback information is that the user equipment receives and decodes the first data.
  • LTE Long Term Evolution
  • the mode of the LTE RAT and the 5G RAT is a frequency division duplex FDD mode
  • the feedback information is a 5G hybrid automatic repeat request HARQ-ACK information corresponding to the first data
  • the first symbol includes a kth LTE symbol after the 5G downlink subframe, and the k is a positive integer greater than or equal to 1.
  • the spreading gain of the feedback message in the first symbol of the LTE uplink subframe is greater than or equal to a spreading gain of the LTE HARQ-ACK information
  • the first symbol includes at least 8 resource blocks RB in the frequency domain.
  • the first symbol includes n HARQ-ACK subbands, each of the HARQ-ACK subbands includes at least 8 resource blocks RB, and the n is a positive integer greater than or equal to 2;
  • the 5G HARQ-ACK information includes n HARQ-ACK information corresponding to n codewords of the 5G multi-carrier;
  • the n HARQ-ACK subbands are used to carry the n HARQ-ACK information.
  • the mode of the LTE RAT and the 5G RAT is a time division duplex TDD mode
  • the feedback information includes 5G HARQ-ACK information corresponding to the first data
  • the 5G downlink subframe includes m 5G downlink subframes of the 5G RAT, where the m is an integer greater than 1;
  • the first symbol includes at least a kth LTE symbol after a last subframe of the m 5G downlink subframes, where k is a positive integer greater than or equal to 1.
  • FIG. 5 is a schematic structural diagram of another base station according to an embodiment of the present invention.
  • the base station is a base station in a method for transmitting a radio frame described in FIG.
  • the base station in the embodiment of the present invention may include at least a radio frame receiving module 501 and a feedback information sending module 502, where:
  • the radio frame receiving module 501 is configured to receive a 5G uplink subframe of a 5G radio access technology RAT of the fifth generation mobile communication technology that is sent by the user equipment;
  • the feedback information sending module 502 is configured to send, to the user equipment, an LTE downlink subframe of a long term evolution LTE RAT carrying feedback information, where the feedback information is generated by the base station receiving and decoding the second data. Feedback information, and the feedback information is carried in the second symbol of the LTE downlink subframe.
  • the mode of the LTE RAT and the 5G RAT is a frequency division duplex FDD mode
  • the feedback information includes 5G hybrid automatic repeat request HARQ-ACK information corresponding to the second data;
  • the second symbol includes a kth LTE symbol after the 5G uplink subframe, and the k is a positive integer greater than or equal to 1.
  • the spreading gain of the feedback message in the second symbol of the LTE downlink subframe is greater than or equal to a spreading gain of the LTE HARQ-ACK information
  • the second symbol includes at least 8 resource blocks RB.
  • the second symbol includes n HARQ-ACK subbands, each of the HARQ-ACK subbands includes at least 8 resource blocks RB, and the n is a positive integer greater than or equal to 2;
  • the 5G HARQ-ACK information includes n HARQ-ACK information corresponding to n codewords of the 5G multi-carrier;
  • the n HARQ-ACK subbands are used to carry the n HARQ-ACK information.
  • the mode of the LTE RAT and the 5G RAT is a time division duplex TDD mode
  • the feedback information includes 5G HARQ-ACK information corresponding to the second data
  • the 5G uplink subframe includes m 5G uplink subframes of a 5G RAT, where the m is a positive integer greater than one;
  • the second symbol includes at least a kth LTE symbol after a last subframe of the m 5G uplink subframes, where k is a positive integer greater than or equal to 1.
  • the FDD mode of the LTE RAT and the 5G RAT is the FDD mode of the LTE RAT and the 5G RAT.
  • the feedback information includes 5G HARQ-ACK information corresponding to the second data
  • the second symbol includes a kth LTE symbol after the 5G uplink subframe, and the k is an integer greater than or equal to 1.
  • the feedback information includes 5G HARQ-ACK information corresponding to the second data
  • the 5G uplink subframe includes m 5G uplink subframes of a 5G RAT, where the m is a positive integer greater than one;
  • the second symbol includes at least a kth LTE symbol after a last subframe of the m 5G uplink subframes, where k is a positive integer greater than or equal to 1.
  • the 5G HARQ-ACK information corresponding to the second data may be carried by a PHICH (Physical Hybrid ARQ Indicator Channel), and the PHICH is in a data area of the LTE subframe.
  • the LTE downlink subframe specifically includes a control area and a data area, where the control area is used for transmitting control signaling, and the data area is used for transmitting data. For example, the first 3 symbols in one LTE downlink subframe are used to transmit control signaling, and the last 4 symbols are used to transmit data.
  • FIG. 6 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • the user equipment is the user equipment in the transmission method of the radio frame described in FIG. 2.
  • the user equipment in the embodiment of the present invention may include at least a radio frame receiving module 601 and a feedback information sending module 602, where:
  • the radio frame receiving module 601 is configured to receive a 5G downlink subframe of a 5G radio access technology RAT of the fifth generation mobile communication technology that carries the first data sent by the base station;
  • the feedback information sending module 602 is configured to send, to the base station, an LTE uplink subframe of a long term evolution LTE RAT that carries feedback information, where the feedback information is generated by the user equipment to receive and decode the first data. Feedback information, and the feedback information is carried in the first symbol of the LTE uplink subframe.
  • the mode of the LTE RAT and the 5G RAT is a frequency division duplex FDD mode
  • the feedback information includes 5G hybrid automatic repeat request HARQ-ACK information corresponding to the first data;
  • the first symbol includes a kth LTE symbol after the 5G downlink subframe, and the k is a positive integer greater than or equal to 1.
  • the spreading gain of the feedback message in the first symbol of the LTE uplink subframe is greater than or equal to a spreading gain of the LTE HARQ-ACK information
  • the first symbol includes at least 8 resource blocks RB in the frequency domain.
  • the first symbol includes n HARQ-ACK subbands, each of the HARQ-ACK subbands includes at least 8 resource blocks RB, and the n is a positive integer greater than or equal to 2;
  • the 5G HARQ-ACK information includes n HARQ-ACK information corresponding to n codewords of the 5G multi-carrier;
  • the n HARQ-ACK subbands are used to carry the n HARQ-ACK information.
  • the mode of the LTE RAT and the 5G RAT is a time division duplex TDD mode
  • the feedback information includes 5G HARQ-ACK information corresponding to the first data
  • the 5G downlink subframe includes m 5G downlink subframes of the 5G RAT, where the m is an integer greater than 1;
  • the first symbol includes at least a kth LTE symbol after a last subframe of the m 5G downlink subframes, where k is a positive integer greater than or equal to 1.
  • FIG. 7 is a schematic structural diagram of another user equipment according to an embodiment of the present invention.
  • the user equipment is a user equipment in a method for transmitting a radio frame described in FIG.
  • the user equipment in the embodiment of the present invention may include at least a radio frame sending module 701 and a feedback information receiving module 702, where:
  • the radio frame sending module 701 is configured to send, to the base station, a 5G uplink subframe of a fifth generation mobile communication technology 5G radio access technology RAT carrying the second data;
  • the feedback information receiving module 702 is configured to receive an LTE downlink subframe of a long term evolution LTE RAT that carries the feedback information sent by the base station, where the feedback information is generated by the base station receiving and decoding the second data. Feedback information, and the feedback information is carried in the second symbol of the LTE downlink subframe.
  • the mode of the LTE RAT and the 5G RAT is a frequency division duplex FDD mode
  • the feedback information includes 5G hybrid automatic repeat request HARQ-ACK information corresponding to the second data;
  • the second symbol includes a kth LTE symbol after the 5G uplink subframe, and the k is a positive integer greater than or equal to 1.
  • the spreading gain of the feedback message in the second symbol of the LTE downlink subframe is greater than or equal to a spreading gain of the LTE HARQ-ACK information
  • the second symbol includes at least 8 resource blocks RB.
  • the second symbol includes n HARQ-ACK subbands, each of the HARQ-ACK subbands includes at least 8 resource blocks RB, and the n is a positive integer greater than or equal to 2;
  • the 5G HARQ-ACK information includes n HARQ-ACK information corresponding to n codewords of the 5G multi-carrier;
  • the n HARQ-ACK subbands are used to carry the n HARQ-ACK information.
  • the mode of the LTE RAT and the 5G RAT is a time division duplex TDD mode
  • the feedback information includes 5G HARQ-ACK information corresponding to the second data
  • the 5G uplink subframe includes m 5G uplink subframes of a 5G RAT, where the m is a positive integer greater than one;
  • the second symbol includes at least a kth LTE symbol after a last subframe of the m 5G uplink subframes, where k is a positive integer greater than or equal to 1.
  • the FDD mode of the LTE RAT and the 5G RAT is the FDD mode of the LTE RAT and the 5G RAT.
  • the feedback information includes 5G HARQ-ACK information corresponding to the second data
  • the second symbol includes a kth LTE symbol after the 5G uplink subframe, and the k is an integer greater than or equal to 1.
  • the feedback information includes 5G HARQ-ACK information corresponding to the second data
  • the 5G uplink subframe includes m 5G uplink subframes of a 5G RAT, where the m is a positive integer greater than one;
  • the second symbol includes at least a kth LTE symbol after a last subframe of the m 5G uplink subframes, where k is a positive integer greater than or equal to 1.
  • the 5G HARQ-ACK information corresponding to the second data may pass PHICH (Physical)
  • the Hybrid ARQ Indicator Channel is used to carry the PHICH in the data area of the LTE subframe.
  • the LTE downlink subframe specifically includes a control area and a data area, where the control area is used for transmitting control signaling, and the data area is used for transmitting data. For example, the first 3 symbols in one LTE downlink subframe are used to transmit control signaling, and the last 4 symbols are used to transmit data.
  • FIG. 8 is a schematic structural diagram of still another base station according to an embodiment of the present invention.
  • the base station may include: at least one processor 501, such as a CPU, at least one communication bus 502, and at least one modulator/demodulator. 503, memory 504, wireless interface 505.
  • the communication bus 502 is used to implement connection communication between these components;
  • the wireless interface 505 is used for signaling or data communication with other node devices;
  • the memory 504 may be a high speed RAM memory or a nonvolatile memory (non -volatile memory), such as at least one disk storage.
  • the memory 504 may also be at least one storage device located away from the processor 501.
  • a set of program codes is stored in the memory 504, and the processor 501 is configured to call the program code stored in the memory 504 to perform the following operations:
  • an LTE uplink subframe of a long-term evolution LTE RAT that carries feedback information
  • the feedback information is feedback information generated by the user equipment to receive and decode the first data
  • the first symbol is carried in the LTE uplink subframe.
  • an LTE downlink subframe of a long term evolution LTE RAT carrying feedback information, where the feedback information is feedback information generated by the base station receiving and decoding the second data, and the feedback information is carried in In the second symbol of the LTE downlink subframe.
  • FIG. 9 is a schematic structural diagram of still another user equipment in the embodiment of the present invention.
  • the user equipment may include: at least one processor 601, such as a CPU, at least one communication bus 602, and at least one modulation/solution.
  • the communication bus 602 is used to implement connection communication between these components;
  • the wireless interface 605 is used for signaling or data communication with other node devices;
  • the memory 604 may be a high speed RAM memory or a nonvolatile memory (non -volatile memory), such as at least one disk storage.
  • the memory 604 may also be at least one storage device located away from the foregoing processor 601.
  • a set of program codes is stored in the memory 604, and the processor 601 is configured to call the program code stored in the memory 604 to perform the following operations:
  • an LTE uplink subframe of a long term evolution LTE RAT carrying feedback information, where the feedback information is feedback information generated by the user equipment to receive and decode the first data, and the feedback information is carried in In the first symbol of the LTE uplink subframe.
  • an LTE downlink subframe of a long term evolution LTE RAT that carries feedback information
  • the feedback information is feedback information generated by the base station receiving and decoding the second data
  • the feedback information is carried by In the second symbol of the LTE downlink subframe.
  • the program may be stored in a computer readable storage medium, and the storage medium may include: Flash disk, Read-Only Memory (ROM), Random Access Memory (RAM), disk or optical disk.

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

Abstract

L'invention concerne un procédé de transmission de trame radio, consistant : à envoyer, à un équipement utilisateur, une sous-trame de liaison descendante de cinquième génération (5G), qui porte des premières données, de la technologie d'accès radio (RAT) de cinquième génération (5G) ; et à recevoir une sous-trame de liaison montante d'évolution à long terme (LTE) d'une RAT d'évolution à long terme (LTE), qui porte des informations de rétroaction et est envoyée par l'équipement utilisateur, les informations de rétroaction étant des informations de rétroaction générées par réception et décodage des premières données par l'équipement utilisateur, et les informations de rétroaction étant portées dans un premier symbole de la sous-trame de liaison montante LTE. De manière correspondante, l'invention concerne en outre une station de base et un équipement utilisateur. Au moyen de la présente invention, un message de commande requis par la RAT 5G peut être envoyé sur la RAT LTE, ce qui est bénéfique pour améliorer l'efficacité de transmission de données d'un système de communication de réseautage hybride constitué par la RAT 5G et la RAT LTE.
PCT/CN2015/097602 2015-12-16 2015-12-16 Procédé de transmission de trame radio, station de base et équipement utilisateur WO2017101046A1 (fr)

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WO2019046482A1 (fr) * 2017-09-01 2019-03-07 Google Llc Nouvelle radio de cinquième génération uniquement de liaison descendante
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