WO2017101046A1

WO2017101046A1 - Radio frame transmission method, base station and user equipment

Info

Publication number: WO2017101046A1
Application number: PCT/CN2015/097602
Authority: WO
Inventors: 黄雯雯; 赵悦莹; 邓天乐
Original assignee: 华为技术有限公司
Priority date: 2015-12-16
Filing date: 2015-12-16
Publication date: 2017-06-22

Abstract

Disclosed is a radio frame transmission method, comprising: sending, to a user equipment, a fifth generation (5G) downlink subframe, which bears first data, of the 5G radio access technology (RAT); and receiving an LTE uplink subframe of long term evolution (LTE) RAT, which bears feedback information and is sent by the user equipment, wherein the feedback information is feedback information generated by receiving and decoding the first data by the user equipment, and the feedback information is borne in a first symbol of the LTE uplink subframe. Correspondingly, further disclosed are a base station and a user equipment. By means of the present invention, a control message required by the 5G RAT can be sent on LTE RAT, which is beneficial to improving the data transmission efficiency of a hybrid networking communication system constituted by the 5G RAT and the LTE RAT.

Description

Radio frame transmission method, base station and user equipment

Technical field

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.

Background technique

With the evolution of wireless communication technology, 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). In order to achieve rapid deployment of 5G, 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.

However, since the 5G working frequency band is high, and the LTE has different waveforms, multiple access modes, and delay requirements, the transmission time intervals of the two are different, so the two RATs cannot be used in the form of CA (carrier aggregation). The HARQ feedback signaling on the joint coding is performed.

Summary of the invention

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;

Receiving, by the user equipment, the 5G downlink subframe that carries the first data;

Decoding, by the user equipment, the first data 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;

Sending, by the user equipment, the LTE uplink subframe of the LTE RAT that carries the feedback information to the base station;

The eNB receives the LTE uplink subframe of the LTE RAT that carries the feedback information that is sent by the user equipment.

In a first possible implementation manner of the first aspect of the embodiment of the present invention,

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.

With reference to the first possible implementation manner of the first aspect of the embodiments of the present invention, in a second possible implementation manner of the first aspect of the embodiments of the present invention,

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.

With reference to the first possible implementation manner of the first aspect of the embodiment of the present invention, in a third possible implementation manner of the first aspect of the embodiment of the present invention,

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.

In a fourth possible implementation manner of the first aspect of the embodiments of the present invention,

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;

Receiving, by the base station, the 5G uplink subframe of the 5G RAT that carries the second data;

Decoding, by the base station, the second data to obtain feedback information corresponding to the second data;

The base station carries the feedback information in a second symbol of an LTE downlink subframe of a long term evolution LTE RAT;

Sending, by the base station, the LTE downlink subframe of the LTE RAT that carries the feedback information to the user equipment;

The user equipment receives the LTE downlink subframe.

In a first possible implementation manner of the second aspect of the embodiment of the present invention,

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.

With reference to the first possible implementation manner of the second aspect of the embodiment of the present invention, in a second possible implementation manner of the second aspect of the embodiment of the present invention,

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.

With reference to the first possible implementation manner of the second aspect of the embodiment of the present invention, in a third possible implementation manner of the second aspect of the embodiment of the present invention,

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.

In a fourth possible implementation manner of the second aspect of the embodiment of the present invention,

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.

In a fifth possible implementation manner of the second aspect of the embodiment of the present invention,

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:

Receiving, by the user equipment, the 5G downlink subframe of the 5G RAT;

The user equipment carries the feedback information in a first symbol of an LTE uplink subframe of a long term evolution LTE RAT;

Transmitting, by the user equipment, the LTE uplink subframe of the LTE RAT to the base station;

The base station receives the LTE uplink subframe.

In a first possible implementation manner of the third aspect of the embodiment of the present invention,

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;

With reference to the first possible implementation manner of the third aspect of the embodiments of the present invention, in a second possible implementation manner of the third aspect of the embodiments of the present invention,

With reference to the first possible implementation manner of the third aspect of the embodiments of the present invention, in a third possible implementation manner of the third aspect of the embodiments of the present invention,

The n HARQ-ACK subbands are used to carry the n HARQ-ACK information.

In a fourth possible implementation manner of the third aspect of the embodiments of the present invention,

The mode of the LTE RAT and the 5G RAT is a time division duplex TDD mode;

A fourth aspect of the embodiments of the present invention provides a method for transmitting a radio frame, including:

Transmitting, by the user equipment, a 5G uplink subframe of a fifth generation mobile communication technology 5G radio access technology RAT carrying the second data to the base station;

Receiving, by the base station, the 5G uplink subframe of the 5G 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.

In a first possible implementation manner of the fourth aspect of the embodiments of the present invention,

The mode of the LTE RAT and the 5G RAT is a frequency division duplex FDD mode;

With reference to the first possible implementation manner of the fourth aspect of the embodiments of the present invention, in a second possible implementation manner of the fourth aspect of the embodiments of the present invention,

The second symbol includes at least 8 resource blocks RB.

With reference to the first possible implementation manner of the fourth aspect of the embodiments of the present invention, in a third possible implementation manner of the fourth aspect of the embodiments of the present invention,

The n HARQ-ACK subbands are used to carry the n HARQ-ACK information.

In a fourth possible implementation manner of the fourth aspect of the embodiments of the present invention,

The mode of the LTE RAT and the 5G RAT is a time division duplex TDD mode;

In a fifth possible implementation manner of the fourth aspect of the embodiments of the present invention,

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.

In some possible implementation manners, 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.

In some possible implementation manners, the LTE downlink subframe includes a downlink part of an LTE special subframe, and the second symbol is in the LTE downlink subframe.

In some possible implementation manners, 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. 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.

It can be seen that, in the embodiment of the present invention, the user equipment and the base station perform radio frame transmission, and 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.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS In the following, the embodiments of the present invention will be briefly described, and the drawings in the following description are merely illustrative of some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work.

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;

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;

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.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope 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. Between the user equipment and the base station 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. Preferably, 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. For convenience of description, in the present application, it is simply referred to as a user equipment or a UE.

In order to facilitate the understanding of the technical solution of the embodiment of the present invention, a radio frame specified in the existing wireless communication protocol standard is first introduced. An LTE radio frame includes 10 subframes, each subframe has 2 slots, and one slot is composed of a plurality of OFDM symbols. For details, refer to Figure 1.2. 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. Specifically, in the LTE communication system of the Time Division Duplexing (TDD) mode, 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.

Please refer to FIG. 1.3, which 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.

To facilitate understanding of the technical solution of the embodiment of the present invention, the following FDD mode in LTE is introduced here. The encoding method of Hybrid automatic repeat request (HARQ) feedback information in the downlink carrier aggregation scenario.

As shown in the mapping between the feedback message and the transport block and the serving cell, it is assumed that two serving cells are configured in the current communication system. If the total number of transport blocks A is 4, 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.

Table 1

Table 2

For the hybrid LTE communication system of the LTE RAT and the 5G RAT, 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.

Referring to FIG. 2, 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:

S201. 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.

S202, 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.

S203. The user equipment decodes the first data carried in the 5G downlink subframe to obtain feedback information corresponding to the first data.

S204. 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.

S205, 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.

S206. 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.

Optionally, in the embodiment of the present invention,

The mode of the LTE RAT and the 5G RAT is a frequency division duplex FDD mode;

Referring to FIG. 2.1 and FIG. 2.2, 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, and 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;

As shown in Figure 2.1, the LTE transmission time interval (TTI) is 1 ms, and 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. Referring to FIG. 2.2, 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.

Optionally, in the embodiment of the present invention,

It should be noted that, in the existing LTE system, the LTE HARQ-ACK information is transmitted in one TTI, and the ZC (Zadoff-Chu) sequence is extended, and the spread gain in the time and frequency domain is 12*4*2. = 96 (where 12 is the length of the ZC sequence; 4 is the number of symbols for transmitting HARQ-ACK information in one slot, the symbol information is multiplied by an orthogonal code of length 4; 2 represents 2 of a TTI Time slot). Since the 5G HARQ-ACK information is transmitted in one LTE symbol, at least 8 RBs are required to perform frequency domain spreading such that the spreading gain of the 5G HARQ-ACK information is greater than or equal to the spreading gain of the LTE HARQ-ACK information.

Referring to FIG. 2.3, for a 5G multi-carrier or multi-codeword, 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.

Optionally, in the embodiment of the present invention,

The n HARQ-ACK subbands are used to carry the n HARQ-ACK information.

Referring to FIG. 2.4, it is assumed that 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;

After receiving the codewords, the user equipment decodes the codeword to obtain 5G HARQ-ACK information (5G HARQ-ACK information includes whether each codeword decodes a correct feedback message), if each codeword is If the decoding is correct, the feedback information corresponding to the four codewords includes the first feedback information corresponding to the first codeword of the first 5G carrier, HARQ-ACK(0)=ACK, and the first 5G carrier. The second feedback information corresponding to the second codeword HARQ-ACK(1)=ACK, the third feedback information corresponding to the first code of the second 5G carrier, HARQ-ACK(2)=ACK, and the second 5G carrier The fourth feedback information corresponding to the two codewords HARQ-ACK (3) = ACK;

Then, the user equipment queries the foregoing table 3, and confirms that the transmission information corresponding to the feedback information is b(0)b(1)=11, and the corresponding location identifier n _{HARQ-ACK, 2 is} used to indicate that the transmission information is carried. The location of the HARQ-ACK subband is the second HARQ-ACK subband HARQ-ACK subband-2.

table 3

Optionally, in the embodiment of the present invention,

The mode of the LTE RAT and the 5G RAT is a Time Division Duplexing (TDD) mode;

Referring to FIG. 2.5, 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. In the existing protocol, 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. In the figure, 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. 2.5), and 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.

In the embodiment of the present invention, the uplink and downlink ratio of the TDD LTE may be configured in multiple configurations. For details, refer to the existing protocol. 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.

It can be seen that, in the embodiment of the present invention, 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.

Please refer to FIG. 3. 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:

S301: 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.

S302, 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;

S303. The base station decodes the second data carried in the 5G uplink subframe to obtain feedback information corresponding to the second data.

S304. 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.

S305, 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.

S306, 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.

Optionally, in the embodiment of the present invention,

The mode of the LTE RAT and the 5G RAT is a frequency division duplex FDD mode;

Referring to FIG. 3.1 and FIG. 3.2, 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, and FIG. 3.2 is an implementation of the present invention. A schematic diagram of a partial structure of a 5G uplink subframe and an LTE downlink subframe in FIG. 3.1 provided by the example;

As shown in Figure 3.1, the LTE TTI duration is 1 ms, and 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. As shown in Figure 3.2, 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.

Optionally, in the embodiment of the present invention,

The second symbol includes at least 8 resource blocks RB.

It should be noted that, in the existing LTE system, the LTE HARQ-ACK information is transmitted in one TTI, and the ZC (Zadoff-Chu) sequence is extended, and the spread gain in the time and frequency domain is 12*4*2=96 (where 12 is the length of the ZC sequence; 4 is the number of symbols for transmitting HARQ-ACK information in one slot, the symbol information is multiplied by an orthogonal code of length 4; 2 represents a TTI 2 time slots in). Since the 5G HARQ-ACK information is transmitted in one LTE symbol, at least 8 RBs are required for frequency domain spreading, so that the spreading gain of the 5G HARQ-ACK information is not lower than the spreading gain of the LTE HARQ-ACK information.

Referring to FIG. 2.3, for a 5G multi-carrier or multi-codeword, 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.

Optionally, in the embodiment of the present invention,

The n HARQ-ACK subbands are used to carry the n HARQ-ACK information.

Referring to FIG. 2.4, it is assumed that 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;

After receiving the codewords, the base station decodes the codewords to obtain 5G HARQ-ACK information (5G HARQ-ACK information includes whether each codeword decodes a correct feedback message), if each codeword is translated If the code is correct, the feedback information corresponding to the four codewords includes the first feedback information corresponding to the first codeword of the first 5G carrier, HARQ-ACK(0)=ACK, and the second of the first 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, and the second of the second 5G carrier The fourth feedback information corresponding to the codeword HARQ-ACK (3) = ACK;

Then, the base station lookup table 4, confirming that the transmission of the feedback information corresponding to b (0) b (1) = 11, corresponding to the location identifier n _{HARQ-ACK, 2} for carrying the transmission information indicating a HARQ The location of the -ACK subband is the second HARQ-ACK subband HARQ-ACK subband-2.

Table 4

Optionally, in the embodiment of the present invention,

The mode of the LTE RAT and the 5G RAT is a time division duplex TDD mode;

Referring to FIG. 3.3, 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. In the existing agreement, the uplink and downlink ratio of TDD LTE has multiple configurations. In the figure, 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. Or 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.

Optionally, in the embodiment of the present invention,

The FDD mode of the LTE RAT and the 5G RAT;

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.

or,

a TDD mode of the LTE RAT and the 5G RAT;

Optionally, in the embodiment of the present invention,

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.

Referring to FIG. 3.4, 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. As shown in the figure, 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.

Since 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. In the embodiment of the present invention, 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.

When there are many users, 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.

If the 5G RAT adopts multiple carriers, the above manner can also be used to distinguish HARQ-ACK information on different carriers.

It can be seen that, in the embodiment of the present invention, 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.

Referring to FIG. 4, 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. The generated feedback information, and the feedback information is carried on the LTE uplink The first symbol of the sub-frame.

Optionally, in the embodiment of the present invention,

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;

Optionally, in the embodiment of the present invention,

The n HARQ-ACK subbands are used to carry the n HARQ-ACK information.

Optionally, in the embodiment of the present invention,

The mode of the LTE RAT and the 5G RAT is a time division duplex TDD mode;

It should be noted that the above is only a brief description of the base station in the embodiment of the present invention, and the specific implementation process, the implementation manner, and the example are shown in the embodiment described in FIG. 2, and details are not described herein again.

Referring to FIG. 5, 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. As shown in the figure, 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.

Optionally, in the embodiment of the present invention,

The mode of the LTE RAT and the 5G RAT is a frequency division duplex FDD mode;

Optionally, in the embodiment of the present invention,

The second symbol includes at least 8 resource blocks RB.

Optionally, in the embodiment of the present invention,

The n HARQ-ACK subbands are used to carry the n HARQ-ACK information.

Optionally, in the embodiment of the present invention,

The mode of the LTE RAT and the 5G RAT is a time division duplex TDD mode;

Optionally, in the embodiment of the present invention,

The FDD mode of the LTE RAT and the 5G RAT;

or,

a TDD mode of the LTE RAT and the 5G RAT;

Optionally, in the embodiment of the present invention,

It should be noted that the above is only a brief description of the base station in the embodiment of the present invention, and the specific implementation process, the implementation manner, and the example are shown in FIG. 3 for details, and details are not described herein again.

Referring to FIG. 6, 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.

Optionally, in the embodiment of the present invention,

The mode of the LTE RAT and the 5G RAT is a frequency division duplex FDD mode;

Optionally, in the embodiment of the present invention,

The n HARQ-ACK subbands are used to carry the n HARQ-ACK information.

Optionally, in the embodiment of the present invention,

The mode of the LTE RAT and the 5G RAT is a time division duplex TDD mode;

It should be noted that the above is only a brief description of the user equipment in the embodiment of the present invention, and the specific implementation process, the implementation manner, and the example are shown in FIG. 2 for details.

Referring to FIG. 7, 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.

Optionally, in the embodiment of the present invention,

The mode of the LTE RAT and the 5G RAT is a frequency division duplex FDD mode;

Optionally, in the embodiment of the present invention,

The second symbol includes at least 8 resource blocks RB.

Optionally, in the embodiment of the present invention,

The n HARQ-ACK subbands are used to carry the n HARQ-ACK information.

Optionally, in the embodiment of the present invention,

The mode of the LTE RAT and the 5G RAT is a time division duplex TDD mode;

Optionally, in the embodiment of the present invention,

The FDD mode of the LTE RAT and the 5G RAT;

or,

a TDD mode of the LTE RAT and the 5G RAT;

Optionally, in the embodiment of the present invention,

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.

It should be noted that the above is only a brief description of the user equipment in the embodiment of the present invention, and the specific implementation process, the implementation manner, and the example are shown in FIG. 3 for details, and details are not described herein again.

FIG. 8 is a schematic structural diagram of still another base station according to an embodiment of the present invention. As shown in FIG. 8, 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. Optionally, 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:

Transmitting, to the user equipment, a 5G downlink subframe of the fifth generation mobile communication technology 5G radio access technology RAT carrying the first data;

Receiving, by the user equipment, an LTE uplink subframe of a long-term evolution LTE RAT that 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 The first symbol is carried in the LTE uplink subframe.

or,

Receiving a 5G uplink subframe of a fifth generation mobile communication technology 5G radio access technology RAT that carries the second data and sent by the user equipment;

Sending, to the user equipment, 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. As shown in FIG. 9, 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. Tuner 603, memory 604, wireless interface 605. 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. Optionally, 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:

Receiving a 5G downlink subframe of a fifth generation mobile communication technology 5G radio access technology RAT that carries the first data and sent by the base station;

Sending, to the base station, 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.

or,

Transmitting, to the base station, a 5G uplink subframe of a fifth generation mobile communication technology 5G radio access technology RAT carrying the second data;

Receiving, by the base station, 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 receiving and decoding the second data, and the feedback information is carried by In the second symbol of the LTE downlink subframe.

A person skilled in the art may understand that all or part of the various steps of the foregoing embodiments may be performed by a program to instruct related hardware. 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.

The method for transmitting a radio frame, the base station, and the user equipment disclosed in the embodiments of the present invention are described in detail. The principles and implementation manners of the present invention are described in the specific examples. The description of the foregoing embodiment is only used for To help understand the method of the present invention and its core ideas; For those skilled in the art, the present invention is not limited by the scope of the present invention.

Claims

A method for transmitting a radio frame, the method comprising:

Transmitting, to the user equipment, a 5G downlink subframe of the fifth generation mobile communication technology 5G radio access technology RAT carrying the first data;

Receiving, by the user equipment, an LTE uplink subframe of a long-term evolution LTE RAT that 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 The first symbol is carried in the LTE uplink subframe.
The method of claim 1 wherein

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 method of claim 2 wherein:

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 method of claim 2 wherein:

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 method of claim 1 wherein

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 method for transmitting a radio frame, the method comprising:

Receiving a 5G uplink subframe of a fifth generation mobile communication technology 5G radio access technology RAT that carries the second data and sent by the user equipment;

Sending, to the user equipment, 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.
The method of claim 6 wherein:

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 method of claim 7 wherein:

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 method of claim 7 wherein:

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 method of claim 6 wherein:

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 method of claim 6 wherein:

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 method for transmitting a radio frame, the method comprising:

Receiving a 5G downlink subframe of a fifth generation mobile communication technology 5G radio access technology RAT that carries the first data and sent by the base station;

Sending, to the base station, 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.
The method of claim 12 wherein:

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 method of claim 13 wherein:

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 method of claim 13 wherein:

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 method of claim 12 wherein:

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 method for transmitting a radio frame, the method comprising:

Transmitting, to the base station, a 5G uplink subframe of a fifth generation mobile communication technology 5G radio access technology RAT carrying the second data;

Receiving, by the base station, 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 receiving and decoding the second data, and the feedback information is carried by In the second symbol of the LTE downlink subframe.
The method of claim 17 wherein:

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 an integer greater than or equal to 1.
The method of claim 18, wherein

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 method of claim 18, wherein

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 method of claim 17 wherein:

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 method of claim 17 wherein:

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 base station, comprising:

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, the processor is configured to execute the instruction, and the communication interface is configured to communicate with a user equipment under control of the processor;

The method of transmitting a radio frame according to any one of claims 1 to 11 may be performed according to the instruction when the processor is executing the instruction.
A user equipment, comprising:

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, the processor is configured to execute the instruction, and the communication interface is configured to communicate with a base station under control of the processor;

When the processor is executing the instruction, the method of transmitting a radio frame according to any one of claims 12-22 can be performed according to the instruction.