CN103596278A - Method, device and system for data transmission - Google Patents

Abstract

Embodiments of the present invention provide a data transmission method, device, and system, which relate to the communication field and are used to ensure correct data transmission. The method includes: in a TDD-LTE system, the base station sends downlink data to the user equipment UE through a first frequency carrier channel; wherein, the first frequency carrier channel is in the TDD-LTE system, and frequency division dual The uplink frequency carrier channel of the Industrial-Long Term Evolution FDD-LTE system is a frequency carrier channel that is not adjacent to the uplink frequency carrier channel; the base station receives the uplink data packet sent by the UE through the first target frequency carrier channel; wherein, the first target frequency carrier The channel is a frequency carrier channel adjacent to the uplink frequency carrier channel of the FDD-LTE system; the base station sends hybrid automatic repeat request (HARQ) feedback information to the UE through the first frequency carrier channel. The present invention is applicable to the scenario of data transmission in the TDD-LTE system.

Description

Method, device and system for data transmission

technical field

The present invention relates to the communication field, in particular to a data transmission method, device and system.

Background technique

LTE (Long Term Evolution, Long Term Evolution) system includes FDD-LTE (Frequency Division Duplexing-Long Term Evolution, Frequency Division Duplexing-Long Term Evolution) system and TDD-LTE (Time Division Duplexing-Long Term Evolution, Time Division Duplexing-Long Term Evolution ) system, wherein the TDD-LTE system uses different time slots of the same frequency carrier channel to transmit and receive data.

In the existing TDD-LTE system, the base station uses a certain frequency carrier channel to send downlink control information to the UE (User Equipment, user equipment), and the UE analyzes the uplink scheduling configuration information and power control information according to the downlink control information sent by the base station. information, and determine the time-frequency resource information and transmit power information used by the uplink. Since the TDD-LTE system uses different time slots of the same frequency carrier channel for data transmission and reception, the uplink where the UE sends uplink data packets is the frequency carrier channel used when the base station sends downlink control information to the UE. . Therefore, the UE uses this frequency carrier channel to send uplink data packets to the base station according to time-frequency resource information and transmission power information. After receiving the uplink data packets, the base station sends feedback information to the UE through this frequency carrier channel, and then the UE Determine whether the base station receives the uplink data packet correctly.

In the above data transmission process, if a certain frequency carrier channel is adjacent to the uplink frequency carrier channel of the FDD-LTE system, in the TDD-LTE system, the base station uses this frequency carrier channel to send downlink control information to the UE, which is the same as In the FDD-LTE system, the base station uses this uplink frequency carrier channel to receive the uplink data packets sent by the UE, which will interfere with each other, resulting in the UE being unable to correctly receive the downlink control information, resulting in incorrect data transmission.

Contents of the invention

Embodiments of the present invention provide a data transmission method, device, and system for ensuring correct data transmission.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

In the first aspect, an embodiment of the present invention provides a method for data transmission, which is applied in a Time Division Duplex-Long Term Evolution TDD-LTE system, including: the base station sends downlink data to the user equipment UE through the first frequency carrier channel; wherein, The first frequency carrier channel is a frequency carrier channel that is not adjacent to the uplink frequency carrier channel of the Frequency Division Duplex-Long Term Evolution FDD-LTE system in the TDD-LTE system; the base station passes the first target frequency carrier channel The channel receives the uplink data packet sent by the UE; wherein, the first target frequency carrier channel is a frequency carrier channel adjacent to the uplink frequency carrier channel of the FDD-LTE system; the base station passes the first frequency carrier channel The carrier channel sends hybrid automatic repeat request (HARQ) feedback information to the UE.

In the second aspect, an embodiment of the present invention provides a data transmission method, which is applied in a Time Division Duplex-Long Term Evolution TDD-LTE system, including: a user equipment UE receives downlink data sent by a base station through a first frequency carrier channel; The first frequency carrier channel is a frequency carrier channel not adjacent to the uplink frequency carrier channel of the Frequency Division Duplex-Long Term Evolution FDD-LTE system in the TDD-LTE system; the UE passes the first frequency carrier channel according to the downlink data The target frequency carrier channel sends an uplink data packet to the base station; wherein, the first target frequency carrier channel is a frequency carrier channel adjacent to the uplink frequency carrier channel of the FDD-LTE system; the UE passes the first target frequency carrier channel A frequency carrier channel receives hybrid automatic repeat request HARQ feedback information sent by the base station; the UE determines whether the base station correctly receives the uplink data packet according to the HARQ feedback information; if the UE determines that the base station does not If the uplink data packet is received correctly, the uplink data packet is resent through the carrier channel of the first target frequency.

In a third aspect, an embodiment of the present invention provides a method for data transmission, which is applied in a Time Division Duplex-Long Term Evolution TDD-LTE system, including: the base station sends downlink data to the user equipment UE through the second target frequency carrier channel; wherein , the second target frequency carrier channel is a frequency carrier channel adjacent to the downlink frequency carrier channel of the Frequency Division Duplex-Long Term Evolution FDD-LTE system; the base station receives the uplink signal sent by the UE through the second frequency carrier channel Data packet; wherein, the second frequency carrier channel is a frequency carrier channel not adjacent to the downlink frequency carrier channel of the FDD-LTE system in the TDD-LTE system; the base station passes the second target frequency carrier channel The channel sends HARQ feedback information to the UE.

In a fourth aspect, an embodiment of the present invention provides a method for data transmission, which is applied in a TDD-LTE system, including: a user equipment UE receives downlink data sent by a base station through a second target frequency carrier channel; wherein, the second The target frequency carrier channel is a frequency carrier channel adjacent to the downlink frequency carrier channel of the Frequency Division Duplex-Long Term Evolution FDD-LTE system; the UE sends an uplink message to the base station through the second frequency carrier channel according to the downlink data. Data packet; wherein, the second frequency carrier channel is a frequency carrier channel not adjacent to the downlink frequency carrier channel of the FDD-LTE system in the TDD-LTE system; the UE passes the second target frequency carrier channel The channel receives the HARQ feedback information sent by the base station; the UE determines whether the base station has correctly received the uplink data packet according to the HARQ feedback information; if the UE determines that the base station has not received the uplink data correctly packet, then resend the uplink data packet through the carrier channel of the second frequency.

In a fifth aspect, an embodiment of the present invention provides a base station, which is applied in a TDD-LTE system, including: a sending unit, configured to send downlink data to a user equipment UE through a carrier channel of a first frequency; wherein, the first frequency The carrier channel is a frequency carrier channel that is not adjacent to the uplink frequency carrier channel of the Frequency Division Duplex-Long Term Evolution FDD-LTE system in the TDD-LTE system; the receiving unit is used to receive the UE through the first target frequency carrier channel The uplink data packet sent; wherein, the first target frequency carrier channel is a frequency carrier channel adjacent to the uplink frequency carrier channel of the FDD-LTE system; the sending unit is also used to pass the first frequency The carrier channel sends hybrid automatic repeat request (HARQ) feedback information to the UE.

In a sixth aspect, an embodiment of the present invention provides a user equipment UE, which is applied in a TDD-LTE system, and includes: a receiving unit configured to receive downlink data sent by a base station through a first frequency carrier channel; wherein, the first The frequency carrier channel is a frequency carrier channel that is not adjacent to the uplink frequency carrier channel of the Frequency Division Duplex-Long Term Evolution FDD-LTE system in the TDD-LTE system; the sending unit is used to receive the downlink data according to the receiving unit, Send the uplink data packet through the first target frequency carrier channel; wherein, the first target frequency carrier channel is a frequency carrier channel adjacent to the uplink frequency carrier channel of the FDD-LTE system; the receiving unit is also used for Receive hybrid automatic repeat request HARQ feedback information sent by the base station through the first frequency carrier channel; a determining unit, configured to determine whether the base station correctly receives the uplink according to the HARQ feedback information received by the receiving unit A data packet; the sending unit is further configured to resend the uplink data packet through the carrier channel of the first target frequency when the determination unit determines that the base station has not correctly received the uplink data packet.

In a seventh aspect, an embodiment of the present invention provides a base station, which is applied in a TDD-LTE system, including: a sending unit, configured to send downlink data to a user equipment UE through a second target frequency carrier channel; wherein, the second The target frequency carrier channel is a frequency carrier channel adjacent to the downlink frequency carrier channel of the Frequency Division Duplex-Long Term Evolution FDD-LTE system; the receiving unit is configured to receive the uplink data packet sent by the UE through the second frequency carrier channel; Wherein, the second frequency carrier channel is a frequency carrier channel in the TDD-LTE system that is not adjacent to the downlink frequency carrier channel of the FDD-LTE system; the sending unit is also used to pass the second target The frequency carrier channel sends HARQ feedback information to the UE.

In an eighth aspect, an embodiment of the present invention provides a user equipment UE, which is applied in a TDD-LTE system, and includes: a receiving unit configured to receive downlink data sent by a base station through a second target frequency carrier channel; wherein, the first The second target frequency carrier channel is a frequency carrier channel adjacent to the downlink frequency carrier channel of the Frequency Division Duplex-Long Term Evolution FDD-LTE system; the sending unit is used to pass the second frequency carrier according to the downlink data received by the receiving unit The channel sends the uplink data packet; wherein, the second frequency carrier channel is a frequency carrier channel not adjacent to the downlink frequency carrier channel of the FDD-LTE system in the TDD-LTE system; the receiving unit is also used for Receive the HARQ feedback information sent by the base station through the second target frequency carrier channel; a determining unit, configured to determine whether the base station correctly receives the uplink data packet according to the HARQ feedback information received by the receiving unit The sending unit is further configured to resend the uplink data packet through the second frequency carrier channel when the determining unit determines that the base station has not correctly received the uplink data packet.

In a ninth aspect, an embodiment of the present invention provides a data transmission system, including: a base station and a user equipment UE; wherein, the base station is the base station described in the above embodiment; the UE is the UE described in the above embodiment .

The embodiment of the present invention provides a method, device and system for data transmission. If the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, the base station communicates with the FDD-LTE The first frequency carrier channel that is not adjacent to the uplink frequency carrier channel in the system sends downlink data including uplink scheduling configuration information and power control information to the UE, so that the UE includes the uplink scheduling configuration information and power control information sent by the base station. The downlink data of the control information adjusts its own transmission configuration information, and then sends the uplink data packet to the base station through the first target frequency carrier channel according to the transmission configuration information, and the base station receives the uplink data packet sent by the UE through the first target frequency carrier channel , and then send HARQ feedback information to the UE through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel in the FDD-LTE system, so that the UE can judge whether the base station has correctly received the uplink signal sent by the UE according to the received HARQ feedback information. data pack. Since the base station sends downlink data to the UE through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel in the FDD-LTE system, it avoids the same situation as in the FDD-LTE system, where the base station uses this uplink frequency carrier channel to receive the data sent by the UE. Interference between uplink data packets ensures the correct transmission of data.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

FIG. 1 is a schematic flowchart of a data transmission method provided by an embodiment of the present invention;

FIG. 2 is a schematic flowchart of another data transmission method provided by an embodiment of the present invention;

FIG. 3 is a schematic flowchart of another data transmission method provided by an embodiment of the present invention;

FIG. 4 is a schematic flowchart of another data transmission method provided by an embodiment of the present invention;

FIG. 5 is a schematic flowchart of another data transmission method provided by an embodiment of the present invention;

FIG. 6 is a schematic flowchart of another data transmission method provided by an embodiment of the present invention;

FIG. 7 is a functional schematic diagram of a base station provided by an embodiment of the present invention;

FIG. 8 is a functional schematic diagram of another base station provided by an embodiment of the present invention;

FIG. 9 is a functional schematic diagram of a user equipment UE provided by an embodiment of the present invention;

FIG. 10 is a functional schematic diagram of a sending unit provided by an embodiment of the present invention;

FIG. 11 is a functional schematic diagram of another base station provided by an embodiment of the present invention;

FIG. 12 is a functional schematic diagram of another user equipment UE provided by an embodiment of the present invention;

FIG. 13 is a functional schematic diagram of another sending unit provided by an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of a data transmission system provided by an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The embodiment of the present invention provides a method for data transmission, which is applied to a TDD-LTE (TimeDivision Duplexing-Long Term Evolution, Time Division Duplexing-Long Term Evolution) system, as shown in Figure 1, including:

101. The base station sends downlink data to a UE (User Equipment, user equipment) through a first frequency carrier channel.

Wherein, the first frequency carrier channel is a frequency carrier channel not adjacent to the uplink frequency carrier channel of the FDD-LTE (Frequency Division Duplexing-Long Term Evolution, Frequency Division Duplexing-Long Term Evolution) system in the TDD-LTE system .

Specifically, if the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, when the base station sends downlink data to the UE through the first target frequency carrier channel, it will communicate with the FDD-LTE In the system, the base station in the system receives the uplink data packets sent by the UE through the uplink frequency carrier channel to cause mutual interference. , then in the TDD-LTE system, the base station sends downlink data to the UE through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system, so that the UE adjusts its transmission according to the downlink data sent by the base station configuration information, and then send an uplink data packet to the base station according to the transmission configuration information.

It should be noted that the downlink data may be related control information, so that the UE can determine the related information of the first target frequency carrier channel used when sending the uplink data packet to the base station according to the related control information. The downlink data may also be data-related information, that is, data information sent by the base station to the UE, so that the UE can determine the related information of the uplink data packet that it needs to send to the base station according to the data-related information.

It should be noted that, when the base station sends downlink data to the UE through the carrier channel of the first frequency for the first time, the downlink data is control-related information.

Further, when the downlink data is control-related information, the downlink data includes: uplink scheduling configuration information and power control information.

At this time, the base station sending downlink data to the UE through the first frequency carrier channel is: the base station sending the uplink scheduling configuration information and the power control information to the UE through the first frequency carrier channel.

Further, the uplink scheduling configuration information includes uplink frequency carrier channel information. The uplink frequency carrier channel information is sent by the base station to the UE, and is used for the UE to determine the uplink frequency carrier information used when sending the uplink data packet to the base station.

It should be noted that, the base station may also send other downlink data except the uplink scheduling configuration information and power controller information to the UE through the first frequency carrier channel, which is not limited in the present invention.

Further, the base station sends PDCCH (Physical Downlink Control Channel, physical layer downlink control channel) information and PCFICH (Physical Control Format Indicator Channel, physical control format indicator channel) information to the UE through the first frequency carrier channel.

Wherein, the PDCCH information carries the uplink scheduling configuration information and power control information. The PCFICH information is used to indicate the number of OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) symbols occupied by transmitting PDCCH information in a subframe.

Specifically, if the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, when the base station sends PDCCH information and PCFICH information to the UE through the first target frequency carrier channel, it will communicate with In the FDD-LTE system, the base station in the FDD-LTE system receives the uplink data packets sent by the UE through the uplink frequency carrier channel to interfere with each other. If the uplink data packets interfere with each other, in the TDD-LTE system, the base station transmits the uplink scheduling information and power control information to the UE through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system. PDCCH information and PCFICH information.

102. The base station receives the uplink data packet sent by the UE through a first target frequency carrier channel.

Wherein, the first target frequency carrier channel is a frequency carrier channel adjacent to the uplink frequency carrier channel of the FDD-LTE system.

Specifically, the base station continuously detects each frequency carrier channel in the TDD-LTE system. If it detects that an uplink data packet is carried on the first target frequency carrier channel, the base station receives the uplink data packet carried in the first target frequency carrier channel. data pack.

It should be noted that if the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, the base station passes the first target frequency carrier channel adjacent to the uplink frequency carrier channel of the FDD-LTE system. The frequency carrier channel receives the uplink data packet sent by the UE. At this time, in the FDD-LTE system, the base station also receives the uplink data packet sent by the UE. Therefore, at this time, the base station in the TDD-LTE system receives the uplink data packet sent by the UE and FDD - The base station in the LTE system will not interfere with each other when receiving the uplink data packets sent by the UE.

103. The base station sends HARQ (Hybrid Automatic Repeat Request, hybrid automatic repeat request) feedback information to the UE through the first frequency carrier channel.

Specifically, if the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, in order to prevent the base station in the TDD-LTE system from sending HARQ feedback information to the UE The base station receives the uplink data packets sent by the UE and interferes with each other. In the TDD-LTE system, the base station sends HARQ feedback information to the UE through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel in the FDD-LTE system. The UE is made to judge whether the base station has correctly received the uplink data packet sent by the UE according to the received HARQ feedback information.

Further, the base station sends physical HARQ indicator channel PHICH information to the UE through the first frequency carrier channel.

Wherein, the PHICH information carries HARQ feedback information.

Specifically, if the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, in order to prevent the base station in the TDD-LTE system from sending HARQ feedback information to the UE If the base station receives the uplink data packets sent by the UE and interferes with each other, then in the TDD-LTE system, the base station sends the HARQ feedback information to the UE through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel in the FDD-LTE system. PHICH information, so that the UE parses the HARQ feedback information carried in the PHICH information after receiving the PHICH information, and further judges whether the base station correctly receives the uplink data packet sent by the UE according to the parsed HARQ feedback information.

The embodiment of the present invention provides a data transmission method. If the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, the base station communicates with the uplink frequency carrier channel in the FDD-LTE system. The first frequency carrier channel with non-adjacent frequency carrier channels sends downlink data including uplink scheduling configuration information and power control information to the UE, so that the UE transmits downlink data according to the uplink scheduling configuration information and power control information sent by the base station. The data adjusts its own transmission configuration information, and then sends an uplink data packet to the base station through the first target frequency carrier channel according to the transmission configuration information. In the FDD-LTE system, the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel sends HARQ feedback information to the UE, so that the UE judges whether the base station correctly receives the uplink data packet sent by the UE according to the received HARQ feedback information. Since the base station sends downlink data to the UE through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel in the FDD-LTE system, it avoids the same situation as in the FDD-LTE system, where the base station uses this uplink frequency carrier channel to receive the data sent by the UE. Interference between uplink data packets ensures the correct transmission of data.

The embodiment of the present invention provides a method for data transmission, which is applied in a TDD-LTE system, as shown in Figure 2, including:

201. A user equipment UE receives downlink data sent by a base station through a first frequency carrier channel.

Wherein, the first frequency carrier channel is a frequency carrier channel in the TDD-LTE system that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system.

Specifically, if the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, since the base station passes through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system The carrier channel sends downlink data to the UE, and the UE receives the downlink data sent by the base station through a first frequency carrier channel that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system.

It should be noted that the downlink data may be control-related information. At this time, the UE may determine the relevant information of the first target frequency carrier channel used when sending the uplink data packet to the base station according to the control-related information. The downlink data can also be data-related information, that is, data information sent by the base station to the UE. At this time, the UE can determine the related information of the uplink data packet that it needs to send to the base station according to the data-related information.

Further, when the downlink data is control-related information, the downlink data includes: uplink scheduling configuration information and power control information.

At this time, the UE receives the uplink scheduling configuration information and the power control information sent by the base station through the first frequency carrier channel.

Further, the uplink scheduling configuration information includes uplink frequency carrier channel information. The uplink frequency carrier channel information is sent by the base station to the UE, and is used for the UE to determine the uplink frequency carrier information used when sending the uplink data packet to the base station.

That is to say, after receiving the uplink scheduling configuration information, the UE can determine the uplink frequency carrier channel used when sending the uplink data packet to the base station according to the uplink frequency carrier channel information by knowing the uplink frequency carrier channel information.

Furthermore, the UE receives the PDCCH information and PCFICH information sent by the base station through the first frequency carrier channel.

Wherein, the PDCCH information carries the uplink scheduling configuration information and the power control information. The PCFICH information is used to indicate the number of OFDM symbols occupied by transmitting PDCCH information in one subframe.

Specifically, if the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, since the base station passes through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system The carrier channel sends PDCCH information and PCFICH information carrying uplink scheduling configuration information and power control information to the UE, and the UE receives the information sent by the base station through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system. PDCCH information and PCFICH information carrying uplink scheduling configuration information and power control information.

It should be noted that in the TDD-LTE system, PDCCH information and PCFICH information are transmitted in downlink subframes or special subframes, in order to ensure that the UE can receive on the first frequency carrier channel different from the first target frequency carrier channel For the downlink data sent by the base station, the first target frequency carrier channel must be consistent with the uplink and downlink configuration information carried in the first frequency carrier channel.

202. The UE sends an uplink data packet to the base station through a first target frequency carrier channel according to the downlink data.

Wherein, the first target frequency carrier channel is a frequency carrier channel adjacent to the uplink frequency carrier channel of the FDD-LTE system.

Specifically, when the UE receives the downlink data sent by the base station, when the downlink data is control-related information, the UE can determine the relevant information of the first target frequency carrier channel according to the downlink data, so as to pass the first target frequency carrier channel Send upstream data packets. When the downlink data is data related information, the UE determines the related information of the uplink data packet to be sent according to the downlink data, so that the uplink data packet can be sent through the first target frequency carrier channel.

Further, when the downlink data is control-related information, that is, the downlink data includes: uplink scheduling configuration information and power control information, the UE transmits to the base station through the first target frequency carrier channel according to the downlink data The uplink data packet includes: the UE adjusts transmission configuration information of the UE according to the uplink scheduling configuration information and power control information; The base station sends the uplink data packet.

Specifically, if the first target frequency carrier channel in the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, the UE receives the uplink scheduling configuration information and power control information sent by the base station. After the PDCCH information and PCFICH information, analyze the number of OFDM symbols occupied by the PDCCH information carried in the PCFICH information, so as to determine the physical resource position where the PDCCH information is located according to the number of OFDM symbols occupied by the PDCCH information, and further, analyze the PDCCH at the physical resource position The information carried in the information includes the uplink scheduling configuration information and power control information sent by the base station to the UE for uplink time-frequency resource information and transmission format information, and then the UE according to the uplink time-frequency resource information specified by the base station , the transmission format specified by the base station and the power control information specified by the base station to adjust its own transmission configuration information. And according to the adjusted transmission configuration information, the uplink data packet is sent to the base station through the first target frequency carrier channel adjacent to the uplink frequency carrier channel of the FDD-LTE system, so that the base station can correctly identify the uplink data packet, and the UE uses the base station specified The appropriate power control information to send uplink data packets, so as to avoid causing interference to other base stations.

It should be noted that if the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, the UE sends the uplink data packet to the base station through the first target frequency carrier channel. At this time, The base station receives the uplink data packet sent by the UE through the first target frequency carrier channel, and in the FDD-LTE system, the base station also receives the uplink data packet sent by the UE, so the base station in the TDD-LTE system receives the uplink data packet sent by the UE There will be no mutual interference with the base station in the FDD-LTE system receiving the uplink data packet sent by the UE.

203. The UE receives the HARQ feedback information sent by the base station through the first frequency carrier channel.

Specifically, if the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, the UE, according to the uplink time-frequency resource information specified by the base station, the transmission format specified by the base station, and After the power control information specified by the base station sends the uplink data packet to the base station through the first target frequency carrier channel adjacent to the uplink frequency carrier channel of the FDD-LTE system, since the base station passes The adjacent first frequency carrier channel sends HARQ feedback information to the UE, and the UE receives the HARQ feedback information sent by the base station through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system.

Further, the UE receives the physical HARQ indicator channel PHICH information sent by the base station through the first frequency carrier channel.

Wherein, the PHICH information carries HARQ feedback information.

Specifically, if the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, the UE, according to the uplink time-frequency resource information specified by the base station, the transmission format specified by the base station, and After the power control information specified by the base station sends the uplink data packet to the base station through the first target frequency carrier channel adjacent to the uplink frequency carrier channel of the FDD-LTE system, since the base station passes the uplink frequency carrier channel not adjacent to the FDD-LTE system The first frequency carrier channel of the FDD-LTE system sends the PHICH information carrying the HARQ feedback information to the UE, and the UE receives the PHICH information carrying the HARQ feedback information sent by the base station through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system. PHICH information, and analyze the HARQ feedback information carried in the PHICH information according to the acquired PHICH information.

It should be noted that in the TDD-LTE system, PHICH information is transmitted in downlink subframes or special subframes, in order to ensure that the UE can receive the information sent by the base station on the first frequency carrier channel different from the first target frequency carrier channel For the PHICH information carrying the HARQ feedback information, the first target frequency carrier channel must be consistent with the uplink and downlink configuration information carried in the first frequency carrier channel.

204. The UE determines whether the base station correctly receives the uplink data packet according to the HARQ feedback information.

Specifically, the UE determines whether the base station correctly receives the uplink data packet according to the indication information included in the HARQ feedback information received through the first frequency carrier channel not adjacent to the uplink frequency carrier channel of the FDD-LTE system.

If the indication information included in the HARQ feedback information received by the UE through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system is ACK, the UE determines that the base station correctly receives the uplink data packet; In the FDD-LTE system, the indication information included in the HARQ feedback information received on the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel is NACK, and the UE determines that the base station has not correctly received the uplink data packet.

205. If the UE determines that the base station has not correctly received the uplink data packet, resend the uplink data packet through the first target frequency carrier channel.

Specifically, if the indication information included in the HARQ feedback information received by the UE through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system is NACK, the UE determines that the base station has not correctly received the uplink data packet, At this time, according to the time-frequency resource information of the uplink specified by the base station, the transmission format specified by the base station, and the power control information specified by the base station, the UE transmits data to the first target frequency carrier channel adjacent to the uplink frequency carrier channel of the FDD-LTE system. The base station sends the uplink data packet, and receives the PHICH information resent by the base station through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system, and obtains the HARQ feedback information carried in the PHICH information, according to the HARQ feedback information The indication information included in the BS determines whether the uplink data packet is correctly received by the base station. If the UE determines that the base station has not received the uplink data packet correctly, the UE will re-send the data to the base station through the first target frequency carrier channel adjacent to the uplink frequency carrier channel of the FDD-LTE system. Send uplink data packets until the UE determines that the base station has correctly received the uplink data packets.

The embodiment of the present invention provides a data transmission method. If the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, the UE passes the uplink frequency carrier channel in the FDD-LTE system. The first frequency carrier channel with non-adjacent frequency carrier channels receives downlink data including uplink scheduling configuration information and power control information sent by the base station, and adjusts itself according to the uplink scheduling configuration information and power control information included in the downlink data The transmission configuration information, and then according to the adjusted transmission configuration information, the uplink data packet is sent to the base station through the first target frequency carrier channel, and then the UE passes through the first frequency carrier that is not adjacent to the uplink frequency carrier channel in the FDD-LTE system The channel receives the HARQ feedback information sent by the base station, and judges whether the base station correctly receives the uplink data packet according to the HARQ feedback information. Since the UE receives the downlink data sent by the base station through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel in the FDD-LTE system through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel in the FDD-LTE system , it avoids mutual interference with the FDD-LTE system when the base station uses this uplink frequency carrier channel to receive the uplink data packet sent by the UE, and ensures correct data transmission.

The embodiment of the present invention provides a method for data transmission, which is applied in a TDD-LTE system, as shown in Figure 3, including:

301. The base station determines a first frequency carrier channel.

Specifically, the base station needs to detect the uplink frequency carrier channel of the FDD-LTE system, determine the bandwidth range of the uplink frequency carrier channel in the FDD-LTE system, so that the frequency carrier channel outside the bandwidth range can be selected as the first frequency carrier channel, That is, a carrier channel that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system.

It should be noted that the base station may also determine the first frequency carrier channel according to other methods, which is not limited in the present invention.

302. The base station sends uplink scheduling configuration information and power control information to the user equipment UE through the first frequency carrier channel, and the UE receives the uplink scheduling configuration information and power control information sent by the base station through the first frequency carrier channel.

Wherein, the first frequency carrier channel is a frequency carrier channel not adjacent to an uplink frequency carrier channel of a Frequency Division Duplex-Long Term Evolution FDD-LTE system in a TDD-LTE system.

Specifically, reference may be made to step 101 and step 201, which will not be repeated here.

303. The UE determines a first target frequency carrier channel according to the uplink scheduling information.

Specifically, the uplink scheduling configuration information includes uplink frequency carrier channel information, and the UE can determine the uplink frequency carrier channel used when sending the uplink data packet according to the uplink frequency carrier channel information, that is, the uplink scheduling configuration information for the UE The uplink frequency carrier channel indicated by the uplink frequency carrier channel information in is determined as the first target frequency carrier channel for sending the uplink data packet.

304. The UE adjusts transmission configuration information of the UE according to the uplink scheduling configuration information and power control information.

Specifically, after acquiring the uplink scheduling configuration information and power control information, the UE may determine the transmit power used by the UE when sending uplink data packets to the base station according to the power control information. According to the uplink scheduling configuration information, the time-frequency resource information and the transmission format information used by the UE when sending the uplink data packet to the base station are determined. Reference may be made to step 202 .

305. The UE sends an uplink data packet to the base station through the first target frequency carrier channel according to the downlink data, and the base station receives the uplink data packet sent by the UE through the first target frequency carrier channel.

Wherein, the first target frequency carrier channel is a frequency carrier channel adjacent to the uplink frequency carrier channel of the FDD-LTE system.

For details, reference may be made to step 102 and step 202, which will not be repeated here.

306. The base station sends HARQ feedback information to the UE through the first frequency carrier channel, and the UE receives the HARQ feedback information sent by the base station through the first frequency carrier channel.

Specifically, reference may be made to step 103 and step 203, which will not be repeated here.

307. The UE determines whether the base station correctly receives the uplink data packet according to the HARQ feedback information.

For details, reference may be made to step 204, which will not be repeated here.

It should be noted that, if the UE determines that the base station correctly receives the uplink data packet, it means that the UE does not need to resend the data packet, and step 309 is performed. If the UE determines that the base station has not correctly received the uplink data packet, it means that the UE needs to resend the data packet, and the UE needs to perform steps 308-309.

308. If the UE determines that the base station has not correctly received the uplink data packet, resend the uplink data packet through the first target frequency carrier channel, and the base station receives the uplink data through the first target frequency carrier channel Bag.

Specifically, reference may be made to step 102 and step 205, which will not be repeated here.

It should be noted that if the UE determines that the base station has not received the uplink data packet correctly, the UE needs to resend the uplink data packet to the base station, and determine whether the base station has correctly received the uplink data packet according to the HARQ feedback information sent by the base station. , that is, after step 307, jump to step 306 until it is determined that the base station has correctly received the uplink data packet.

309. The base station sends downlink data to the UE through the first frequency carrier channel, and the UE receives the downlink data sent by the base station through the first frequency carrier channel.

Wherein, the downlink data includes data communicated between the base station and the UE, and does not include uplink scheduling configuration information and power control information, that is, the downlink data is data-related information and does not include control-related information.

Specifically, reference may be made to step 101 and step 201, which will not be repeated here.

It should be noted that, after receiving the downlink data, the UE may send an uplink data packet to the base station, at this time, reference may be made to steps 305-308, which will not be repeated here.

The embodiment of the present invention provides a data transmission method. If the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, the base station communicates with the uplink frequency carrier channel in the FDD-LTE system. The first frequency carrier channel with non-adjacent frequency carrier channels sends downlink data including uplink scheduling configuration information and power control information to the UE, so that the UE transmits downlink data according to the uplink scheduling configuration information and power control information sent by the base station. The data adjusts its own transmission configuration information, and then sends an uplink data packet to the base station through the first target frequency carrier channel according to the transmission configuration information. In the FDD-LTE system, the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel sends HARQ feedback information to the UE, so that the UE judges whether the base station correctly receives the uplink data packet sent by the UE according to the received HARQ feedback information. Since the base station sends downlink data to the UE through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel in the FDD-LTE system, it avoids the same situation as in the FDD-LTE system, where the base station uses this uplink frequency carrier channel to receive the data sent by the UE. Interference between uplink data packets ensures the correct transmission of data.

An embodiment of the present invention provides a data transmission method, as shown in FIG. 4, including:

401. The base station sends downlink data to a user equipment UE through a second target frequency carrier channel.

Wherein, the second target frequency carrier channel is a frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system.

Specifically, if the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system, when the base station sends downlink data to the UE through the second target frequency carrier channel, it will not communicate with the FDD-LTE system. In the LTE system, if the base station transmits downlink data to the UE through the downlink frequency carrier channel and generates interference, the base station sends the UE including uplink scheduling configuration information through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system. and the downlink data of the power controller information, so that the UE adjusts its own transmission configuration information according to the uplink scheduling configuration information and power control information sent by the base station, and then sends uplink data packets to the base station according to the transmission configuration information.

It should be noted that the downlink data may be related control information, so that the UE can determine the related information of the second frequency carrier channel used when sending the uplink data packet to the base station according to the related control information. The downlink data may also be data-related information, that is, data information sent by the base station to the UE, so that the UE can determine the related information of the uplink data packet that it needs to send to the base station according to the data-related information.

It should be noted that, when the base station sends downlink data to the UE through the carrier channel of the second target frequency for the first time, the downlink data is control-related information.

Further, when the downlink data is control-related information, the downlink data includes: uplink scheduling configuration information and power control information.

At this time, the base station sending downlink data to the UE through the second target frequency carrier channel is: the base station sends uplink scheduling configuration information and power control information to the UE through the second target frequency carrier channel.

Further, the uplink scheduling configuration information includes uplink frequency carrier channel information. The uplink frequency carrier channel information is sent by the base station to the UE, and is used for the UE to determine the uplink frequency carrier information used when sending the uplink data packet to the base station.

It should be noted that the base station may also send other downlink data except uplink scheduling configuration information and power controller information to the UE through the second target frequency carrier channel, which is not limited in the present invention.

Furthermore, the base station sends the PDCCH information and the PCFICH information to the UE through the second target frequency carrier channel.

Wherein, the PDCCH information carries the uplink scheduling configuration information and power control information. The PCFICH information is used to indicate the number of OFDM symbols occupied by transmitting PDCCH information in one subframe.

Specifically, if the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system, when the base station sends PDCCH information and PCFICH information to the UE through the second target frequency carrier channel, it will not In the FDD-LTE system, the base station transmits downlink data to the UE through the downlink frequency carrier channel to generate interference. PDCCH information and PCFICH information of channel scheduling information and power control information.

402. The base station receives the uplink data packet sent by the UE through a second frequency carrier channel.

Wherein, the second frequency carrier channel is a frequency carrier channel not adjacent to the downlink frequency carrier channel of the FDD-LTE system in the TDD-LTE system.

Specifically, the base station continuously detects each frequency carrier channel in the TDD-LTE system. If it detects that an uplink data packet is carried on the second frequency carrier channel, the base station receives the uplink data packet carried in the second frequency carrier channel. .

It should be noted that if the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system, the base station passes the second target frequency carrier channel that is not adjacent to the downlink frequency carrier channel of the FDD-LTE system. The frequency carrier channel receives the uplink data packet sent by the UE, and in the FDD-LTE system, the base station uses this downlink frequency carrier channel to send downlink data to the UE, thus avoiding the downlink data sent by the base station in the FDD-LTE system to the UE. The interference generated when the base station in the LTE system receives the uplink data packet sent by the UE.

403. The base station sends HARQ feedback information to the UE through the second target frequency carrier channel.

Specifically, if the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system, when the base station sends HARQ feedback information to the UE through the second target frequency carrier channel, it will not communicate with the FDD - In the LTE system, the downlink data sent by the base station to the UE through the downlink frequency carrier channel causes interference, and the base station sends HARQ feedback information to the UE through the second target frequency carrier channel adjacent to the downlink frequency carrier channel in the FDD-LTE system, So that the UE judges whether the base station correctly receives the uplink data packet sent by the UE according to the received HARQ feedback information.

Further, the base station sends PHICH information to the UE through the second target frequency carrier channel.

Wherein, the PHICH information carries HARQ feedback information.

Specifically, if the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system, when the base station sends HARQ feedback information to the UE through the second target frequency carrier channel, it will not communicate with the FDD -In the LTE system, the downlink data sent by the base station to the UE through the downlink frequency carrier channel causes interference, and the base station sends the PHICH information carrying the HARQ feedback information to the UE through the second target frequency carrier channel, so that the UE receives the PHICH information. The HARQ feedback information carried in the PHICH information is analyzed, and further, according to the analyzed HARQ feedback information, it is judged whether the base station correctly receives the uplink data packet sent by the UE.

The embodiment of the present invention provides a data transmission method. If the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system, the base station transmits data to the UE through the second target frequency carrier channel. Send downlink data including uplink scheduling configuration information and power control information, so that the UE adjusts its own transmission configuration information according to the downlink data including uplink scheduling configuration information and power control information sent by the base station, and then according to the transmission configuration information The uplink data packet is sent to the base station through the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel in the FDD-LTE system. HARQ feedback information, so that the UE receives the HARQ feedback information sent by the base station through the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel in the FDD-LTE system, and judges whether the base station correctly receives the HARQ feedback information according to the received HARQ feedback information Uplink data packet sent by UE. Since the base station receives the uplink data packet sent by the UE through the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel in the FDD-LTE system, it is avoided that in the FDD-LTE system, the base station uses this downlink frequency carrier channel to transmit to the UE. For downlink data, in the TDD-LTE system, the base station receives the uplink data packet sent by the UE through the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel in the FDD-LTE system, which ensures the correct transmission of data .

The embodiment of the present invention provides a method for data transmission, which is applied in a TDD-LTE system, as shown in Figure 5, including:

501. A user equipment UE receives the downlink data sent by a base station through a second target frequency carrier channel.

Wherein, the second target frequency carrier channel is a frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system.

Specifically, if the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system, since the base station passes through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system The carrier channel sends downlink data to the UE, and the UE receives the downlink data sent by the base station through a second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system.

It should be noted that the downlink data may be related control information, and at this time, the UE may determine related information of the carrier channel of the second frequency used when sending the uplink data packet to the base station according to the related control information. The downlink data can also be data-related information, that is, data information sent by the base station to the UE. At this time, the UE can determine the related information of the uplink data packet that it needs to send to the base station according to the data-related information.

Further, when the downlink data is control-related information, the downlink data includes: uplink scheduling configuration information and power control information.

At this time, the UE receives the uplink scheduling configuration information and the power control information sent by the base station through the second target frequency carrier channel.

Further, the uplink scheduling configuration information includes uplink frequency carrier channel information. The uplink frequency carrier channel information is sent by the base station to the UE, and is used for the UE to determine the uplink frequency carrier information used when sending the uplink data packet to the base station.

That is to say, after receiving the uplink scheduling configuration information, the UE can determine the uplink frequency carrier channel used when sending the uplink data packet to the base station according to the uplink frequency carrier channel information by knowing the uplink frequency carrier channel information.

Furthermore, the UE receives the PDCCH information and the PCFICH information sent by the base station through a second target frequency carrier channel.

Wherein, the PDCCH information carries the uplink scheduling configuration information and the power control information. The PCFICH information is used to indicate the number of OFDM symbols occupied by transmitting PDCCH information in one subframe.

Specifically, if the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system, since the base station passes through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system The carrier channel sends PDCCH information and PCFICH information carrying uplink scheduling configuration information and power control information to the UE, and the UE receives the information sent by the base station through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system. PDCCH information and PCFICH information carrying uplink scheduling configuration information and power control information.

502. The UE sends an uplink data packet to the base station through a second frequency carrier channel according to the downlink data.

Wherein, the second frequency carrier channel is a frequency carrier channel not adjacent to the downlink frequency carrier channel of the FDD-LTE system in the TDD-LTE system.

Specifically, when the UE receives the downlink data sent by the base station, when the downlink data is control related information, the UE can determine the relevant information of the second frequency carrier channel according to the downlink data, so as to send the uplink information through the second frequency carrier channel. data pack. When the downlink data is data related information, the UE determines the related information of the uplink data packet to be sent according to the downlink data, so that the uplink data packet can be sent through the second frequency carrier channel.

Further, when the downlink data is control-related information, that is, the downlink data includes: uplink scheduling configuration information and power control information, the UE sends an uplink message to the base station through the second frequency carrier channel according to the downlink data. The data packet includes: the UE adjusts the transmission configuration information of the UE according to the uplink scheduling configuration information and power control information; and according to the adjusted transmission configuration information, transmits to the base station through the second frequency carrier channel Send upstream data packets.

Specifically, if the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system, the UE sends an uplink data packet to the base station through the second target frequency carrier channel. At this time, the FDD- In the LTE system, the base station sends downlink data to the UE through the downlink frequency carrier channel, which will cause interference to the base station in the TDD-LTE system receiving the uplink data packet sent by the UE through the target frequency carrier channel. In order to prevent the base station in the FDD-LTE system from sending The downlink data interferes with the uplink data packets received by the base station from the UE in the TDD-LTE system. In the TDD-LTE system, the UE receives the PDCCH information and After the PCFICH information, analyze the number of OFDM symbols occupied by the PDCCH information carried in the PCFICH information, so as to determine the physical resource position where the PDCCH information is located according to the number of OFDM symbols occupied by the PDCCH information, and further, analyze the physical resource position carried in the PDCCH information on the physical resource position The uplink scheduling configuration information and power control information including the uplink time-frequency resource information and transmission format information sent by the base station to the UE, and then the UE according to the uplink time-frequency resource information specified by the base station, the base station specified The transmission format and the power control information specified by the base station adjust its own transmission configuration information. And according to the adjusted transmission configuration information, the uplink data packet is sent to the base station through the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel of the FDD-LTE system, so that the base station can correctly identify the uplink data packet, and the UE uses the base station specified The appropriate power control information to send uplink data packets, thereby avoiding interference to other base stations.

503. The UE receives the HARQ feedback information sent by the base station through the second target frequency carrier channel.

Specifically, if the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system, the UE, according to the uplink time-frequency resource information specified by the base station, the transmission format specified by the base station, and the The power control information specified by the base station sends the uplink data packet to the base station through the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel of the FDD-LTE system. The second target frequency carrier channel of the FDD-LTE system sends HARQ feedback information to the UE, and the UE receives the HARQ feedback information sent by the base station through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system.

Further, the UE receives the PHICH information sent by the base station through a second target frequency carrier channel.

Wherein, the PHICH information carries HARQ feedback information.

Specifically, if the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system, the UE, according to the uplink time-frequency resource information specified by the base station, the transmission format specified by the base station, and the The power control information specified by the base station sends the uplink data packet to the base station through the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel of the FDD-LTE system. The second target frequency carrier channel of the FDD-LTE system sends the PHICH information carrying the HARQ feedback information to the UE, and the UE receives the HARQ feedback information sent by the base station through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system. PHICH information, and parse the HARQ feedback information carried in the PHICH information according to the acquired PHICH information.

504. The UE determines whether the base station correctly receives the uplink data packet according to the HARQ feedback information.

Specifically, the UE determines whether the base station correctly receives the uplink data packet according to the indication information included in the HARQ feedback information received through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system.

If the indication information included in the HARQ feedback information received by the UE through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system is ACK, the UE determines that the base station correctly receives the uplink data packet; If the indication information included in the HARQ feedback information received by the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system is NACK, the UE determines that the base station has not correctly received the uplink data packet.

505. If the UE determines that the base station has not correctly received the uplink data packet, resend the uplink data packet through the second frequency carrier channel.

Specifically, if the indication information included in the HARQ feedback information received by the UE through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system is NACK, the UE determines that the base station has not correctly received the uplink data packet, At this time, according to the uplink time-frequency resource information specified by the base station, the transmission format specified by the base station, and the power control information specified by the base station, the UE uses the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel of the FDD-LTE system Resend the uplink data packet to the base station, and receive the PHICH information resent by the base station through the downlink frequency carrier channel of the FDD-LTE system, and obtain the HARQ feedback information carried in the PHICH information, and determine the base station according to the indication information included in the HARQ feedback information Whether the uplink data packet is received correctly. If the UE determines that the base station has not received the uplink data packet correctly, the UE resends the uplink data packet to the base station through the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel of the FDD-LTE system until the UE Make sure that the base station correctly receives the uplink data packet.

The embodiment of the present invention provides a data transmission method. If the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system, the UE receives the base station through the second target frequency carrier channel. Send downlink data including uplink scheduling configuration information, and adjust its own transmission configuration information according to the uplink scheduling configuration information and power control information included in the downlink data, and then pass the FDD-LTE The second frequency carrier channel that is not adjacent to the downlink frequency carrier channel in the system sends an uplink data packet to the base station. After that, the UE receives the HARQ feedback information sent by the base station through the second target frequency carrier channel, and judges whether the base station is correct according to the HARQ feedback information. Receive uplink data packets. Since the UE sends the uplink data packet to the base station through the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel in the FDD-LTE system, at this time, the base station transmits the uplink data packet through the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel in the FDD-LTE system The second frequency carrier channel receives the uplink data packet sent by the UE, which avoids that in the FDD-LTE system, the base station uses this downlink frequency carrier channel to send downlink data to the UE. The interference generated when the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel receives the uplink data packet sent by the UE ensures correct data transmission.

The embodiment of the present invention provides a method for data transmission, which is applied in a TDD-LTE system, as shown in Figure 6, including:

601. The base station sends uplink scheduling configuration information and power control information to the user equipment UE through the second target frequency carrier channel, and the UE receives the uplink scheduling configuration information and power sent by the base station through the second target frequency carrier channel control information.

Wherein, the second target frequency carrier channel is a frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system.

For details, reference may be made to step 401 and step 501, which will not be repeated here.

602. The UE determines a second frequency carrier channel according to the uplink scheduling configuration information.

Specifically, the uplink scheduling configuration information includes the uplink frequency carrier channel, and the UE can determine the uplink frequency carrier channel used when sending the uplink data packet according to the uplink scheduling configuration information, that is, the uplink scheduling configuration information for the UE The uplink frequency carrier channel indicated by the uplink frequency carrier channel information in is determined as the second frequency carrier channel for sending the uplink data packet.

603. The UE adjusts transmission configuration information of the UE according to the uplink scheduling configuration information and power control information.

604. The UE sends an uplink data packet to the base station through a second frequency carrier channel according to the downlink data, and the base station receives the uplink data packet sent by the UE through a second frequency carrier channel.

Wherein, the second frequency carrier channel is a frequency carrier channel not adjacent to the downlink frequency carrier channel of the FDD-LTE system in the TDD-LTE system.

For details, reference may be made to step 402 and step 502, which will not be repeated here.

605. The base station sends HARQ feedback information to the UE through the second target frequency carrier channel, and the UE receives the HARQ feedback information sent by the base station through the second target frequency carrier channel.

Specifically, reference may be made to step 403 and step 503, which will not be repeated here.

606. The UE determines whether the base station correctly receives the uplink data packet according to the HARQ feedback information.

For details, reference may be made to step 504, which will not be repeated here.

It should be noted that, if the UE determines that the base station correctly receives the uplink data packet, it means that the UE does not need to resend the data packet, and step 608 is performed. If the UE determines that the base station has not correctly received the uplink data packet, it means that the UE needs to resend the data packet, and the UE needs to perform steps 607-608.

607. If the UE determines that the base station has not correctly received the uplink data packet, resend the uplink data packet through the second frequency carrier channel, and the base station receives the uplink data packet through the second frequency carrier channel.

For details, reference may be made to step 402 and step 505, which will not be repeated here.

It should be noted that if the UE determines that the base station has not received the uplink data packet correctly, the UE needs to resend the uplink data packet to the base station, and determine whether the base station has correctly received the uplink data packet according to the HARQ feedback information sent by the base station. , that is, after step 606, jump to step 605 until it is determined that the base station has correctly received the uplink data packet.

608. The base station sends downlink data to the UE through the second target frequency carrier channel, and the UE receives the downlink data sent by the base station through the second target frequency carrier channel.

Wherein, the downlink data includes data communicated between the base station and the UE, and does not include uplink scheduling configuration information and power control information, that is, the downlink data is data-related information and does not include control-related information.

For details, reference may be made to step 401 and step 501, which will not be repeated here.

It should be noted that, when the UE receives the downlink data, it can send the uplink data packet to the base station, at this time, reference can be made to steps 604-607, which will not be repeated here.

The embodiment of the present invention provides a data transmission method. If the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system, the base station transmits data to the UE through the second target frequency carrier channel. Send downlink data including uplink scheduling configuration information and power control information, so that the UE adjusts its own transmission configuration information according to the downlink data including uplink scheduling configuration information and power control information sent by the base station, and then according to the transmission configuration information The uplink data packet is sent to the base station through the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel in the FDD-LTE system. HARQ feedback information, so that the UE receives the HARQ feedback information sent by the base station through the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel in the FDD-LTE system, and judges whether the base station correctly receives the HARQ feedback information according to the received HARQ feedback information Uplink data packet sent by UE. Since the base station receives the uplink data packet sent by the UE through the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel in the FDD-LTE system, it is avoided that in the FDD-LTE system, the base station uses this downlink frequency carrier channel to transmit to the UE. For downlink data, in the TDD-LTE system, the base station receives the uplink data packet sent by the UE through the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel in the FDD-LTE system, which ensures the correct transmission of data .

As shown in FIG. 7 , it provides a functional schematic diagram of a base station in an embodiment of the present invention, which is applied in a TDD-LTE system. Referring to FIG. 7 , the base station includes: a sending unit 701 and a receiving unit 702 .

The sending unit 701 is configured to send downlink data to a user equipment UE through a first frequency carrier channel.

Wherein, the first frequency carrier channel is a frequency carrier channel not adjacent to an uplink frequency carrier channel of a Frequency Division Duplex-Long Term Evolution FDD-LTE system in a TDD-LTE system.

Specifically, when the sending unit 701 sends downlink data to the UE through the first target frequency carrier channel when the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, It will interfere with the base station in the FDD-LTE system through the uplink frequency carrier channel to receive the uplink data packet sent by the UE. In order to avoid the TDD-LTE system, the sending unit 701 sends the downlink data to the UE and the base station in the FDD-LTE system Receive the uplink data packets sent by the UE to interfere with each other, then in the TDD-LTE system, the sending unit 701 transmits to the UE through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system, including the uplink Downlink data of link scheduling configuration information and power controller information, so that UE adjusts its own transmission configuration information according to the uplink scheduling configuration information and power control information sent by the base station, and then sends uplink data packets to the base station according to the transmission configuration information .

It should be noted that the downlink data may be related control information, so that the UE can determine the related information of the first target frequency carrier channel used when sending the uplink data packet to the base station according to the related control information. The downlink data may also be data-related information, that is, data information sent by the base station to the UE, so that the UE can determine the related information of the uplink data packet that it needs to send to the base station according to the data-related information.

It should be noted that, when the sending unit 701 sends downlink data to the UE through the first frequency carrier channel for the first time, the downlink data is control-related information.

Further, when the downlink data is control-related information, the downlink data includes: uplink scheduling configuration information and power control information.

At this time, the sending unit 701 is specifically configured to send the uplink scheduling configuration information and the power control information to the UE through a first frequency carrier channel.

Further, the uplink scheduling configuration information includes uplink frequency carrier channel information. The uplink frequency carrier channel information is sent by the base station to the UE, and is used for the UE to determine the uplink frequency carrier information used when sending the uplink data packet to the base station.

It should be noted that the sending unit 701 may also send other downlink data except uplink scheduling configuration information and power controller information to the UE through the first frequency carrier channel, which is not limited in the present invention.

Furthermore, the sending unit 701 is specifically configured to send PDCCH information and PCFICH information to the UE through the first frequency carrier channel.

Wherein, the PDCCH information carries the uplink scheduling configuration information and power control information. The PCFICH information is used to indicate the number of OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) symbols occupied by transmitting PDCCH information in a subframe.

Specifically, the sending unit 701, when the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, sends the PDCCH information and the PCFICH to the UE through the first target frequency carrier channel In order to avoid TDD-LTE system, the sending unit 701 sends PDCCH information and PCFICH information to the UE and In the FDD-LTE system, the uplink data packets received by the base station from the UE interfere with each other, then in the TDD-LTE system, the sending unit 701 passes through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system Send PDCCH information and PCFICH information carrying uplink scheduling information and power control information to the UE.

The receiving unit 702 is configured to receive the uplink data packet sent by the UE through the first target frequency carrier channel.

Wherein, the first target frequency carrier channel is a frequency carrier channel adjacent to the uplink frequency carrier channel of the FDD-LTE system.

Specifically, the receiving unit 702 continuously detects each frequency carrier channel in the TDD-LTE system, and if it detects that an uplink data packet is carried on the first target frequency carrier channel, it receives the first target frequency carrier channel. Uplink data packets carried.

The sending unit 702 is further configured to send HARQ feedback information to the UE through the first frequency carrier channel.

Specifically, the sending unit 701, when the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, in order to avoid sending The sending of HARQ feedback information and the base station in the FDD-LTE system receiving the uplink data packets sent by the UE interfere with each other, then in the TDD-LTE system, the first frequency carrier that is not adjacent to the uplink frequency carrier channel in the FDD-LTE system The channel sends HARQ feedback information to the UE, so that the UE judges whether the base station correctly receives the uplink data packet sent by the UE according to the received HARQ feedback information.

Further, the sending unit 701 is specifically configured to send physical HARQ indicator channel PHICH information to the UE through the first frequency carrier channel.

Wherein, the PHICH information carries HARQ feedback information.

Specifically, the sending unit 701, when the first target frequency carrier channel in the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, in order to prevent the base station in the TDD-LTE system from sending HARQ feedback information to the UE In the FDD-LTE system, the base station receives the uplink data packet sent by the UE and interferes with each other. In the TDD-LTE system, the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel in the FDD-LTE system is sent to the UE. PHICH information with HARQ feedback information, so that the UE parses the HARQ feedback information carried in the PHICH information after receiving the PHICH information, and further judges whether the base station correctly receives the uplink data packet sent by the UE according to the parsed HARQ feedback information.

Further, the base station, as shown in FIG. 8 , further includes: a determining unit 703 .

The determining unit 703 is configured to determine the first frequency carrier channel.

Specifically, the determining unit 703 detects the uplink frequency carrier channel of the FDD-LTE system, and determines the bandwidth range of the uplink frequency carrier channel in the FDD-LTE system, so that a frequency carrier channel outside the bandwidth range can be selected as the first frequency carrier channel. The frequency carrier channel is a carrier channel that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system.

It should be noted that the determining unit 703 may also determine the first frequency carrier channel according to other methods, which is not limited in the present invention.

An embodiment of the present invention provides a base station. If the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, the base station passes through the uplink frequency carrier channel in the FDD-LTE system. The non-adjacent first frequency carrier channel sends downlink data including uplink scheduling configuration information and power control information to the UE, so that the UE adjusts itself according to the downlink data including uplink scheduling configuration information and power control information sent by the base station The transmission configuration information, and then according to the transmission configuration information, send the uplink data packet to the base station through the first target frequency carrier channel. When the base station receives the uplink data packet sent by the UE through the first target frequency carrier channel, The first frequency carrier channel that is not adjacent to the uplink frequency carrier channel in the system sends HARQ feedback information to the UE, so that the UE judges whether the base station correctly receives the uplink data packet sent by the UE according to the received HARQ feedback information. Since the base station sends downlink data to the UE through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel in the FDD-LTE system, it avoids the same situation as in the FDD-LTE system, where the base station uses this uplink frequency carrier channel to receive the data sent by the UE. Interference between uplink data packets ensures the correct transmission of data.

As shown in FIG. 9, it provides a functional schematic diagram of a user equipment UE for an embodiment of the present invention, which is applied in a TDD-LTE system. Referring to FIG. 9, the UE includes: a receiving unit 901, a sending unit 902 and a determination Unit 903.

The receiving unit 901 is configured to receive downlink data sent by the base station through a first frequency carrier channel.

Wherein, the first frequency carrier channel is a frequency carrier channel not adjacent to an uplink frequency carrier channel of a Frequency Division Duplex-Long Term Evolution FDD-LTE system in a TDD-LTE system.

Specifically, when the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, since the base station passes through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system The carrier channel sends downlink data to the UE, and the receiving unit 901 receives the uplink scheduling configuration information and power control information sent by the base station through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system downlink data.

It should be noted that the downlink data may be control-related information. At this time, the UE may determine the relevant information of the first target frequency carrier channel used when sending the uplink data packet to the base station according to the control-related information. The downlink data can also be data-related information, that is, data information sent by the base station to the UE. At this time, the UE can determine the related information of the uplink data packet that it needs to send to the base station according to the data-related information.

Further, when the downlink data is control-related information, the downlink data includes: uplink scheduling configuration information and power control information.

At this time, the receiving unit 901 is specifically configured to receive the uplink scheduling configuration information and the power control information sent by the base station through a first frequency carrier channel.

Further, the uplink scheduling configuration information includes uplink frequency carrier channel information. The uplink frequency carrier channel information is sent by the base station to the UE, and is used for the UE to determine the uplink frequency carrier information used when sending the uplink data packet to the base station.

That is to say, after receiving the uplink scheduling configuration information, the receiving unit 901 can obtain the uplink frequency carrier channel information, so as to determine the uplink frequency used when sending the uplink data packet to the base station according to the uplink frequency carrier channel information. frequency carrier channel.

Furthermore, the receiving unit 901 is specifically configured to receive the PDCCH information and PCFICH information sent by the base station through the first frequency carrier channel.

Wherein, the PDCCH information carries the uplink scheduling configuration information and the power control information. The PCFICH information is used to indicate the number of OFDM symbols occupied by transmitting PDCCH information in one subframe.

Specifically, when the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, since the base station passes through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system The carrier channel sends PDCCH information and PCFICH information carrying uplink scheduling configuration information and power control information to the UE, and the receiving unit 901 uses the first frequency carrier that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system The channel receives PDCCH information and PCFICH information carrying uplink scheduling configuration information and power control information sent by the base station.

The sending unit 902 is configured to send an uplink data packet through the first target frequency carrier channel according to the downlink data received by the receiving unit 901 .

Wherein, the first target frequency carrier channel is a frequency carrier channel adjacent to the uplink frequency carrier channel of the FDD-LTE system.

Further, the sending unit 902 includes: a processing module 9021 and a sending module 9022, as shown in FIG. 10 .

The processing module 9021 is configured to adjust the transmission configuration information of the UE according to the uplink scheduling configuration information and power control information received by the receiving unit 901 .

Specifically, when the first target frequency carrier channel in the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, the receiving unit 901 receives the uplink scheduling configuration information and After the PDCCH information and PCFICH information of the power control information, the number of OFDM symbols occupied by the PDCCH information carried in the PCFICH information is analyzed, so as to determine the location of the physical resource where the PDCCH information is located according to the number of OFDM symbols occupied by the PDCCH information. Further, in the physical resource Positionally analyze the uplink scheduling configuration information and power control information carried in the PDCCH information, including the time-frequency resource information and transmission format information sent by the base station to the UE for the uplink, so that the processing module 9021, according to the base station The specified uplink time-frequency resource information, the transmission format specified by the base station, and the power control information specified by the base station adjust its own transmission configuration information.

The sending module 9022 is configured to send an uplink data packet to the base station through the first target frequency carrier channel according to the transmission configuration information adjusted by the processing module 9021.

Specifically, the sending module 9022, according to the transmission configuration information adjusted by the processing module 9021, sends the uplink data packet to the base station through the first target frequency carrier channel adjacent to the uplink frequency carrier channel of the FDD-LTE system, so as to The base station can correctly identify the uplink data packet, and the UE sends the uplink data packet using the appropriate power control information specified by the base station, thereby avoiding interference to other base stations.

The receiving unit 901 is further configured to receive the HARQ feedback information sent by the base station through the first frequency carrier channel.

Specifically, when the first target frequency carrier channel in the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, according to the uplink time-frequency resource information specified by the base station, the transmission format specified by the base station, and the base station The specified power control information, after the sending unit 902 sends the uplink data packet to the base station through the first target frequency carrier channel adjacent to the uplink frequency carrier channel of the FDD-LTE system, since the base station passes the uplink frequency carrier channel with the FDD-LTE system The first frequency carrier channel that is not adjacent to the frequency carrier channel sends HARQ feedback information to the UE, and the receiving unit 901 receives the information sent by the base station through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system. HARQ feedback information.

Further, the receiving unit 901 is specifically configured to receive the physical HARQ indicator channel PHICH information sent by the base station through the first frequency carrier channel.

Wherein, the PHICH information carries HARQ feedback information.

Specifically, when the first target frequency carrier channel in the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, according to the uplink time-frequency resource information specified by the base station, the transmission format specified by the base station, and the base station The specified power control information, after the sending unit 902 sends the uplink data packet to the base station through the first target frequency carrier channel adjacent to the uplink frequency carrier channel of the FDD-LTE system, since the base station passes the uplink frequency carrier channel with the FDD-LTE system The first frequency carrier channel that is not adjacent to the frequency carrier channel sends the PHICH information that carries the HARQ feedback information to the UE, and then the receiving unit 901, through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system The channel receives the PHICH information carrying the HARQ feedback information sent by the base station, and parses the HARQ feedback information carried in the PHICH information according to the acquired PHICH information.

The determining unit 903 is configured to determine whether the base station correctly receives the uplink data packet according to the HARQ feedback information received by the receiving unit 901 .

Specifically, the determining unit 903 determines whether the base station is Uplink data packets are received correctly.

If it is determined that the indication information included in the HARQ feedback information received by the receiving unit 901 through the first frequency carrier channel not adjacent to the uplink frequency carrier channel of the FDD-LTE system is ACK, it is determined that the base station correctly receives the uplink data packet.

If it is determined that the indication information included in the HARQ feedback information received by the receiving unit 901 through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system is NACK, it is determined that the base station has not correctly received the uplink data packet .

The sending unit 902 is further configured to resend the uplink data packet through the carrier channel of the first target frequency when the determining unit 903 determines that the base station has not correctly received the uplink data packet.

Specifically, the sending unit 902, when the determining unit 903 determines that the base station has not correctly received the uplink data packet, according to the time-frequency resource information of the uplink specified by the base station received by the receiving unit 901, The transmission format specified by the base station and the power control information specified by the base station send the uplink data packet to the base station through the first target frequency carrier channel adjacent to the uplink frequency carrier channel of the FDD-LTE system.

At this time, the receiving unit 901 receives the PHICH information resent by the base station through the first frequency carrier channel not adjacent to the uplink frequency carrier channel of the FDD-LTE system, and obtains the HARQ feedback information carried in the PHICH information, the The determining unit 903 determines whether the base station has correctly received the uplink data packet according to the indication information included in the HARQ feedback information received by the receiving unit 901, and if it is determined that the base station has not correctly received the uplink data packet, the sending unit 902 re-sends the uplink data to the base station packet until the determining unit 903 determines that the base station has correctly received the uplink data packet.

The determining unit 903 is further configured to determine the first target frequency carrier channel according to the uplink scheduling configuration information received by the receiving unit 901 .

Specifically, the determining unit 903, when the uplink scheduling configuration information includes uplink frequency carrier channel information, determines the uplink frequency carrier channel used when sending the uplink data packet according to the uplink frequency carrier channel information, that is, the uplink frequency carrier channel The uplink frequency carrier channel indicated by the uplink frequency carrier channel information in the link scheduling configuration information is determined as the first target frequency carrier channel for sending the uplink data packet.

An embodiment of the present invention provides a user equipment UE. If the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, the UE passes through the uplink frequency carrier channel in the FDD-LTE system. The carrier channel of the first frequency that is not adjacent to the carrier channel receives the downlink data including the uplink scheduling configuration information and power control information sent by the base station, and adjusts its own frequency according to the uplink scheduling configuration information and power control information included in the downlink data. transmit configuration information, and then send an uplink data packet to the base station through the first target frequency carrier channel according to the adjusted transmission configuration information, and then, the UE passes through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel in the FDD-LTE system Receive the HARQ feedback information sent by the base station, and judge whether the base station receives the uplink data packet correctly according to the HARQ feedback information. Since the UE receives the downlink data sent by the base station through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel in the FDD-LTE system through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel in the FDD-LTE system , it avoids that in the FDD-LTE system, when the base station uses this uplink frequency carrier channel to receive the uplink data packet sent by the UE, in the TDD-LTE system, the base station passes the second channel that is not adjacent to the downlink frequency carrier channel in the FDD-LTE system. The interference generated when the two-frequency carrier channel receives the uplink data packet sent by the UE ensures correct data transmission.

As shown in FIG. 11 , it provides a functional schematic diagram of a base station according to an embodiment of the present invention. Referring to FIG. 11 , the base station includes: a sending unit 1101 and a receiving unit 1102 .

The sending unit 1101 is configured to send the downlink data to the UE through a second target frequency carrier channel.

Wherein, the second target frequency carrier channel is a frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system.

Specifically, the sending unit 1101, when the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system, sends downlink data to the UE through the second target frequency carrier channel without If there will be interference with the downlink data sent by the base station in the FDD-LTE system to the UE through the downlink frequency carrier channel, then the sending unit 1101 will transmit the downlink data to the UE through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system. Send downlink data including uplink scheduling configuration information and power controller information, so that the UE adjusts its own transmission configuration information according to the uplink scheduling configuration information and power control information sent by the base station, and then sends to the base station according to the transmission configuration information Uplink data packets.

It should be noted that the downlink data may be related control information, so that the UE can determine the related information of the second frequency carrier channel used when sending the uplink data packet to the base station according to the related control information. The downlink data may also be data-related information, that is, data information sent by the base station to the UE, so that the UE can determine the related information of the uplink data packet that it needs to send to the base station according to the data-related information.

It should be noted that, when the sending unit 1101 sends downlink data to the UE through the second target frequency carrier channel for the first time, the downlink data is control-related information.

Further, when the downlink data is control-related information, the downlink data includes: uplink scheduling configuration information and power control information.

At this time, the sending unit 1101 is specifically configured to send uplink scheduling configuration information and power control information to the UE through the second target frequency carrier channel.

Further, the uplink scheduling configuration information includes uplink frequency carrier channel information. The uplink frequency carrier channel information is sent by the base station to the UE, and is used for the UE to determine the uplink frequency carrier information used when sending the uplink data packet to the base station.

It should be noted that the sending unit 1101 may also send other downlink data except uplink scheduling configuration information and power controller information to the UE through the second target frequency carrier channel, which is not limited in the present invention.

Furthermore, the sending unit 1101 is specifically configured to send the PDCCH information and the PCFICH information to the UE through the second target frequency carrier channel.

Wherein, the PDCCH information carries the uplink scheduling configuration information and power control information. The PCFICH information is used to indicate the number of OFDM symbols occupied by transmitting PDCCH information in one subframe.

Specifically, the sending unit 1101 sends the PDCCH information and the PCFICH to the UE through the second target frequency carrier channel when the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system. information, it will not interfere with the downlink data sent by the base station in the FDD-LTE system to the UE through the downlink frequency carrier channel, then the sending unit 1101 will pass the second target frequency adjacent to the downlink frequency carrier channel of the FDD-LTE system The carrier channel sends PDCCH information and PCFICH information carrying uplink scheduling information and power control information to the UE.

The receiving unit 1102 is configured to receive the uplink data packet sent by the UE through the second frequency carrier channel.

Wherein, the second frequency carrier channel is a frequency carrier channel not adjacent to the downlink frequency carrier channel of the FDD-LTE system in the TDD-LTE system.

Specifically, the receiving unit 1102 continuously detects each frequency carrier channel in the TDD-LTE system. If it detects that the second frequency carrier channel carries an uplink data packet, the base station receives the second frequency carrier channel. uplink packets.

The sending unit 1101 is further configured to send HARQ feedback information to the UE through the second target frequency carrier channel.

Specifically, when the sending unit 1101 sends the HARQ feedback information to the UE through the second target frequency carrier channel when the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system , will not interfere with the downlink data sent by the base station to the UE through the downlink frequency carrier channel in the FDD-LTE system, then the sending unit 1101 passes through the second target frequency adjacent to the downlink frequency carrier channel in the FDD-LTE system The carrier channel sends HARQ feedback information to the UE, so that the UE judges whether the base station correctly receives the uplink data packet sent by the UE according to the received HARQ feedback information.

Further, the sending unit 1101 is specifically configured to send PHICH information to the UE through the second target frequency carrier channel.

Wherein, the PHICH information carries HARQ feedback information.

Specifically, when the sending unit 1101 sends the HARQ feedback information to the UE through the second target frequency carrier channel when the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system , will not interfere with the downlink data sent by the base station to the UE through the downlink frequency carrier channel in the FDD-LTE system, then the sending unit 1101 sends the PHICH information carrying the HARQ feedback information to the UE through the second target frequency carrier channel, After receiving the PHICH information, the UE parses out the HARQ feedback information carried in the PHICH information, and further judges whether the base station correctly receives the uplink data packet sent by the UE according to the parsed HARQ feedback information.

An embodiment of the present invention provides a base station. If the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system, the base station sends to the UE through the second target frequency carrier channel including uplink The downlink data of the link scheduling configuration information and power control information, so that the UE adjusts its own transmission configuration information according to the downlink data sent by the base station including the uplink scheduling configuration information and power control information, and then uses the transmission configuration information to communicate with the FDD - In the LTE system, the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel sends an uplink data packet to the base station, and the base station sends HARQ feedback information to the UE through the second target frequency carrier channel when receiving the uplink data packet sent by the UE , so that the UE receives the HARQ feedback information sent by the base station through the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel in the FDD-LTE system, and judges whether the base station correctly receives the HARQ feedback information sent by the UE according to the received HARQ feedback information Uplink data packets. Since the base station receives the uplink data packet sent by the UE through the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel in the FDD-LTE system, it is avoided that in the FDD-LTE system, the base station uses this downlink frequency carrier channel to transmit to the UE. For downlink data, in the TDD-LTE system, the base station receives the uplink data packet sent by the UE through the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel in the FDD-LTE system, which ensures the correct transmission of data .

As shown in FIG. 12, it provides a functional schematic diagram of a user equipment UE for an embodiment of the present invention, which is applied in a TDD-LTE system. Referring to FIG. 12, the UE includes: a receiving unit 1201, a sending unit 1202 and a determination Unit 1203.

The receiving unit 1201 is configured to receive the downlink data sent by the base station through a second target frequency carrier channel.

Wherein, the second target frequency carrier channel is a frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system.

Specifically, when the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system, since the base station passes through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system The carrier channel sends downlink data to the UE, and the receiving unit 1201 receives the uplink scheduling configuration information and power control information sent by the base station through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system. downlink data.

It should be noted that the downlink data may be related control information, and at this time, the UE may determine related information of the carrier channel of the second frequency used when sending the uplink data packet to the base station according to the related control information. The downlink data can also be data-related information, that is, data information sent by the base station to the UE. At this time, the UE can determine the related information of the uplink data packet that it needs to send to the base station according to the data-related information.

Further, when the downlink data is control-related information, the downlink data includes: uplink scheduling configuration information and power control information.

At this time, the receiving unit 1201 is specifically configured to receive the uplink scheduling configuration information and the power control information sent by the base station through the second target frequency carrier channel.

Further, the uplink scheduling configuration information includes uplink frequency carrier channel information. The uplink frequency carrier channel information is sent by the base station to the UE, and is used for the UE to determine the uplink frequency carrier information used when sending the uplink data packet to the base station.

That is to say, after receiving the uplink scheduling configuration information, the receiving unit 1201 can obtain the uplink frequency carrier channel information, so as to determine the uplink frequency used when sending the uplink data packet to the base station according to the uplink frequency carrier channel information. frequency carrier channel.

Furthermore, the receiving unit 1201 is specifically configured to receive the PDCCH information and the PCFICH information sent by the base station through a second target frequency carrier channel.

Wherein, the PDCCH information carries the uplink scheduling configuration information and the power control information. The PCFICH information is used to indicate the number of OFDM symbols occupied by transmitting PDCCH information in one subframe.

Specifically, when the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system, since the base station passes through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system The carrier channel sends PDCCH information and PCFICH information carrying uplink scheduling configuration information and power control information to the UE, then the receiving unit 1201, through the second target frequency carrier adjacent to the downlink frequency carrier channel of the FDD-LTE system The channel receives PDCCH information and PCFICH information that carry uplink scheduling configuration information and power control information sent by the base station.

The sending unit 1202 is configured to send an uplink data packet to the base station through a second frequency carrier channel according to the downlink data received by the receiving unit 1201 .

Wherein, the second frequency carrier channel is a frequency carrier channel not adjacent to the downlink frequency carrier channel of the FDD-LTE system in the TDD-LTE system.

Further, the sending unit 1202 includes a processing module 12021 and a sending module 12022, as shown in FIG. 13 .

The processing module 12021 is configured to adjust the transmission configuration information of the UE according to the uplink scheduling configuration information and power control information received by the receiving unit 1201 .

Specifically, when the second target frequency carrier channel in the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system, when the receiving unit 1201 receives the uplink scheduling configuration information sent by the base station After the PDCCH information and PCFICH information of the power control information, the number of OFDM symbols occupied by the PDCCH information carried in the PCFICH information is analyzed, so as to determine the physical resource location where the PDCCH information is located according to the number of OFDM symbols occupied by the PDCCH information. Further, in the physical Analyze the uplink scheduling configuration information and power control information carried in the PDCCH information at the resource location, including the time-frequency resource information and transmission format information sent by the base station to the UE for the uplink, so that the processing module 12021, according to The uplink time-frequency resource information specified by the base station, the transmission format specified by the base station, and the power control information specified by the base station adjust its own transmission configuration information.

The sending module 12022 is configured to send an uplink data packet to the base station through a second frequency carrier channel according to the transmission configuration information adjusted by the processing module 12021.

Specifically, the sending module 12022, according to the body configuration information adjusted by the processing module 12021, sends the uplink data packet to the base station through the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel of the FDD-LTE system, so as to The base station can correctly identify the uplink data packet, and the UE sends the uplink data packet using the appropriate power control information specified by the base station, thereby avoiding interference to other base stations.

The receiving unit 1201 is further configured to receive the HARQ feedback information sent by the base station through the carrier channel of the second target frequency.

Specifically, when the second target frequency carrier channel in the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system, according to the uplink time-frequency resource information specified by the base station, the transmission format specified by the base station, and the base station The specified power control information, after the sending unit 1202 sends the uplink data packet to the base station through the second frequency carrier channel not adjacent to the downlink frequency carrier channel of the FDD-LTE system, since the base station passes the downlink frequency carrier channel of the FDD-LTE system The second target frequency carrier channel adjacent to the frequency carrier channel sends HARQ feedback information to the UE, and the receiving unit 1201 receives the HARQ feedback information sent by the base station through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system. HARQ feedback information.

Further, the receiving unit 1201 is specifically configured to receive the PHICH information sent by the base station through a second target frequency carrier channel.

Wherein, the PHICH information carries HARQ feedback information.

Specifically, when the second target frequency carrier channel in the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system, according to the uplink time-frequency resource information specified by the base station, the transmission format specified by the base station, and the base station The specified power control information, after the sending unit 1202 sends the uplink data packet to the base station through the second frequency carrier channel not adjacent to the downlink frequency carrier channel of the FDD-LTE system, since the base station passes the downlink frequency carrier channel of the FDD-LTE system The second target frequency carrier channel adjacent to the frequency carrier channel sends the PHICH information carrying the HARQ feedback information to the UE, then the receiving unit 1201, through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system The channel receives the PHICH information carrying the HARQ feedback information sent by the base station, and parses the HARQ feedback information carried in the PHICH information according to the acquired PHICH information.

The determining unit 1203 is configured to determine whether the base station correctly receives the uplink data packet according to the HARQ feedback information received by the receiving unit 1201 .

Specifically, the determining unit 1203 determines whether the base station Uplink data packets are received correctly.

If it is determined that the indication information included in the HARQ feedback information received by the receiving unit 1201 through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system is ACK, it is determined that the base station correctly receives the uplink data packet.

If it is determined that the indication information included in the HARQ feedback information received by the receiving unit 1201 through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system is NACK, then it is determined that the base station has not correctly received the uplink data packet .

The sending unit 1202 is further configured to resend the uplink data packet through the second frequency carrier channel when the determining unit 1203 determines that the base station has not correctly received the uplink data packet.

Specifically, the sending unit 1202, when the determining unit 1203 determines that the base station has not correctly received the uplink data packet, according to the time-frequency resource information of the uplink specified by the base station received by the receiving unit 1201, The transmission format specified by the base station and the power control information specified by the base station resend the uplink data packet to the base station through a second frequency carrier channel not adjacent to the downlink frequency carrier channel of the FDD-LTE system.

At this time, the receiving unit 1201 receives the PHICH information resent by the base station through the downlink frequency carrier channel of the FDD-LTE system, and obtains the HARQ feedback information carried in the PHICH information, and the determining unit 1203, according to the receiving unit The indication information included in the HARQ feedback information received at 1201 determines whether the base station has correctly received the uplink data packet, and if it is determined that the base station has not correctly received the uplink data packet, then the sending unit 1202 transmits the signal through a channel that is not adjacent to the downlink frequency carrier channel of the FDD-LTE system. The second frequency carrier channel resends the uplink data packet to the base station until the determining unit 1203 of the UE determines that the base station correctly receives the uplink data packet.

The determining unit 1203 is further configured to determine the second frequency carrier channel according to the uplink scheduling configuration information of the receiving unit 1201 .

Specifically, the determining unit 1203, when the uplink scheduling configuration information includes uplink frequency carrier channel information, determines the uplink frequency carrier channel used when sending the uplink data packet according to the uplink frequency carrier channel information, that is, the The determining unit 1203 determines the uplink frequency carrier channel indicated by the uplink frequency carrier channel information in the uplink scheduling configuration information as the first target frequency carrier channel for sending the uplink data packet.

An embodiment of the present invention provides a user equipment UE. If the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system, the UE receives the information sent by the base station through the second target frequency carrier channel. The downlink data including the uplink scheduling configuration information, and adjust its own transmission configuration information according to the uplink scheduling configuration information and power control information included in the downlink data, and then communicate with the FDD-LTE system according to the adjusted transmission configuration information The second frequency carrier channel in which the downlink frequency carrier channel is not adjacent sends an uplink data packet to the base station. After that, the UE receives the HARQ feedback information sent by the base station through the second target frequency carrier channel, and judges whether the base station receives it correctly according to the HARQ feedback information. Uplink data packets. Since the UE sends the uplink data packet to the base station through the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel in the FDD-LTE system, at this time, the base station transmits the uplink data packet through the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel in the FDD-LTE system The second frequency carrier channel receives the uplink data packet sent by the UE, which avoids the mutual interference with the FDD-LTE system when the base station uses this downlink frequency carrier channel to send downlink data to the UE, ensuring correct data transmission.

An embodiment of the present invention provides a data transmission system, as shown in FIG. 14 , including: a base station 1401 and a user equipment UE1402. in,

The base station 1401 is the base station described in the foregoing embodiments.

The UE1402 is the UE described in the foregoing embodiments.

The embodiment of the present invention provides a method, device and system for data transmission. If the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel in the FDD-LTE system, the base station communicates with the FDD-LTE The first frequency carrier channel that is not adjacent to the uplink frequency carrier channel in the system sends downlink data including uplink scheduling configuration information and power control information to the UE, so that the UE includes the uplink scheduling configuration information and power control information sent by the base station. The downlink data of the control information adjusts its own transmission configuration information, and then sends the uplink data packet to the base station through the first target frequency carrier channel according to the transmission configuration information, and the base station receives the uplink data packet sent by the UE through the first target frequency carrier channel , and then send HARQ feedback information to the UE through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel in the FDD-LTE system, so that the UE can judge whether the base station has correctly received the uplink signal sent by the UE according to the received HARQ feedback information. data pack. Since the base station sends downlink data to the UE through the first frequency carrier channel that is not adjacent to the uplink frequency carrier channel in the FDD-LTE system, it avoids the same situation as in the FDD-LTE system, where the base station uses this uplink frequency carrier channel to receive the data sent by the UE. Interference between uplink data packets ensures the correct transmission of data. Or, if the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel in the FDD-LTE system, the base station sends to the UE through the second target frequency carrier channel including uplink scheduling configuration information and power control The downlink data of information, so that the UE adjusts its own transmission configuration information according to the downlink data including uplink scheduling configuration information and power control information sent by the base station, and then passes the downlink frequency carrier in the FDD-LTE system according to the transmission configuration information The second frequency carrier channel with non-adjacent channels sends an uplink data packet to the base station. When the base station receives the uplink data packet sent by the UE, it sends HARQ feedback information to the UE through the second target frequency carrier channel, so that the UE passes the FDD- In the LTE system, the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel receives the HARQ feedback information sent by the base station, and judges whether the base station correctly receives the uplink data packet sent by the UE according to the received HARQ feedback information. Since the base station receives the uplink data packet sent by the UE through the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel in the FDD-LTE system, it is avoided that in the FDD-LTE system, the base station uses this downlink frequency carrier channel to transmit to the UE. For downlink data, in the TDD-LTE system, the base station receives the uplink data packet sent by the UE through the second frequency carrier channel that is not adjacent to the downlink frequency carrier channel in the FDD-LTE system, which ensures the correct transmission of data .

In the several embodiments provided in this application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may be physically included separately, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware, or in the form of hardware plus software functional units.

The above-mentioned integrated units implemented in the form of software functional units may be stored in a computer-readable storage medium. The above-mentioned software functional units are stored in a storage medium, and include several instructions to enable a computer device (which may be a personal computer, server, or network device, etc.) to execute some steps of the methods described in various embodiments of the present invention. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM for short), random access memory (Random Access Memory, RAM for short), magnetic disk or optical disk, etc., which can store program codes. medium.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (19)

1. A method for data transmission, applied in Time Division Duplex-Long Term Evolution TDD-LTE system, is characterized in that, comprising: The base station sends downlink data to the user equipment UE through the first frequency carrier channel; wherein, the first frequency carrier channel is the uplink frequency carrier channel of the frequency division duplex-long term evolution FDD-LTE system in the TDD-LTE system Non-adjacent frequency carrier channels; The base station receives the uplink data packet sent by the UE through the first target frequency carrier channel; wherein the first target frequency carrier channel is a frequency carrier channel adjacent to the uplink frequency carrier channel of the FDD-LTE system; The base station sends hybrid automatic repeat request (HARQ) feedback information to the UE through the first frequency carrier channel. 2. The method according to claim 1, wherein the downlink data comprises: uplink scheduling configuration information and power control information; The base station sending downlink data to the UE through the first frequency carrier channel includes: The base station sends the uplink scheduling configuration information and the power control information to the UE through a first frequency carrier channel. 3. The method according to claim 1 or 2, wherein before the base station sends the downlink data to the UE through the first frequency carrier channel, further comprising: The base station determines the first frequency carrier channel. 4. A method for data transmission, applied in a TDD-LTE system, is characterized in that, comprising: The user equipment UE receives the downlink data sent by the base station through the first frequency carrier channel; wherein, the first frequency carrier channel is in the TDD-LTE system, which is different from the uplink frequency carrier channel of the Frequency Division Duplex-Long Term Evolution FDD-LTE system Adjacent frequency carrier channels; The UE sends an uplink data packet to the base station through a first target frequency carrier channel according to the downlink data; wherein, the first target frequency carrier channel is adjacent to the uplink frequency carrier channel of the FDD-LTE system frequency carrier channel; The UE receives hybrid automatic repeat request HARQ feedback information sent by the base station through the first frequency carrier channel; The UE determines whether the base station correctly receives the uplink data packet according to the HARQ feedback information; If the UE determines that the base station has not correctly received the uplink data packet, resend the uplink data packet through the carrier channel of the first target frequency. 5. The method of claim 4, wherein, The downlink data includes: uplink scheduling configuration information and power control information; The UE receiving the downlink data sent by the base station through the first frequency carrier channel includes: The UE receives the uplink scheduling configuration information and the power control information sent by the base station through the first frequency carrier channel; Before the UE sends the uplink data packet to the base station through the first target frequency carrier channel according to the downlink data, the method further includes: The UE determines the first target frequency carrier channel according to the uplink scheduling configuration information; The UE sending the uplink data packet to the base station through the first target frequency carrier channel according to the downlink data includes: The UE adjusts transmission configuration information of the UE according to the uplink scheduling configuration information and power control information; and sends uplink data to the base station through the first target frequency carrier channel according to the adjusted transmission configuration information Bag. 6. A method for data transmission, applied in Time Division Duplex-Long Term Evolution TDD-LTE system, is characterized in that, comprising: The base station sends downlink data to the user equipment UE through the second target frequency carrier channel; wherein the second target frequency carrier channel is a frequency carrier channel adjacent to the downlink frequency carrier channel of the Frequency Division Duplex-Long Term Evolution FDD-LTE system ; The base station receives the uplink data packet sent by the UE through the second frequency carrier channel; wherein, the second frequency carrier channel is in the TDD-LTE system and is not adjacent to the downlink frequency carrier channel of the FDD-LTE system frequency carrier channel; The base station sends HARQ feedback information to the UE through the second target frequency carrier channel. 7. The method according to claim 6, wherein the downlink data comprises: uplink scheduling configuration information and power control information; The base station sending the downlink data to the UE through the second target frequency carrier channel includes: The base station sends uplink scheduling configuration information and power control information to the UE through the second target frequency carrier channel. 8. A method for data transmission, applied in a TDD-LTE system, is characterized in that, comprising: The user equipment UE receives the downlink data sent by the base station through the second target frequency carrier channel; wherein the second target frequency carrier channel is a frequency carrier adjacent to the downlink frequency carrier channel of the Frequency Division Duplex-Long Term Evolution FDD-LTE system channel; The UE sends an uplink data packet to the base station through a second frequency carrier channel according to the downlink data; wherein, the second frequency carrier channel is a downlink frequency of the FDD-LTE system in the TDD-LTE system Frequency carrier channels with non-adjacent carrier channels; The UE receives the HARQ feedback information sent by the base station through the second target frequency carrier channel; The UE determines whether the base station correctly receives the uplink data packet according to the HARQ feedback information; If the UE determines that the base station has not correctly received the uplink data packet, resend the uplink data packet through the second frequency carrier channel. 9. The method according to claim 8, wherein the downlink data comprises: uplink scheduling configuration information and power control information; The UE receiving the downlink data sent by the base station through the second target frequency carrier channel includes: The UE receives the uplink scheduling configuration information and the power control information sent by the base station through a second target frequency carrier channel; Before the UE sends the uplink data packet to the base station through the second frequency carrier channel according to the downlink data, the method further includes: The UE determines the second frequency carrier channel according to the uplink scheduling configuration information; The UE sending the uplink data packet to the base station through the second frequency carrier channel according to the downlink data includes: The UE adjusts transmission configuration information of the UE according to the uplink scheduling configuration information and power control information; and sends an uplink data packet to the base station through a second frequency carrier channel according to the adjusted transmission configuration information . 10. A base station, applied in a TDD-LTE system, is characterized in that, comprising: The sending unit is configured to send downlink data to the user equipment UE through a first frequency carrier channel; wherein, the first frequency carrier channel is the uplink frequency of the frequency division duplex-long term evolution FDD-LTE system in the TDD-LTE system Frequency carrier channels with non-adjacent carrier channels; A receiving unit, configured to receive the uplink data packet sent by the UE through a first target frequency carrier channel; wherein the first target frequency carrier channel is a frequency carrier adjacent to the uplink frequency carrier channel of the FDD-LTE system channel; The sending unit is further configured to send hybrid automatic repeat request (HARQ) feedback information to the UE through the first frequency carrier channel. 11. The base station according to claim 10, characterized in that, The downlink data includes: uplink scheduling configuration information and power control information; The sending unit is specifically configured to send the uplink scheduling configuration information and the power control information to the UE through a first frequency carrier channel. 12. The base station according to claim 10 or 11, further comprising: A determining unit, configured to determine the first frequency carrier channel. 13. A user equipment UE, applied in a TDD-LTE system, characterized in that it includes: The receiving unit is used to receive the downlink data sent by the base station through the first frequency carrier channel; wherein, the first frequency carrier channel is the uplink frequency carrier of the frequency division duplex-long term evolution FDD-LTE system in the TDD-LTE system Frequency carrier channels with non-adjacent channels; A sending unit, configured to send an uplink data packet through a first target frequency carrier channel according to the downlink data received by the receiving unit; wherein, the first target frequency carrier channel is an uplink frequency carrier channel related to the FDD-LTE system Adjacent frequency carrier channels; The receiving unit is further configured to receive hybrid automatic repeat request HARQ feedback information sent by the base station through the first frequency carrier channel; a determining unit, configured to determine whether the base station correctly receives the uplink data packet according to the HARQ feedback information received by the receiving unit; The sending unit is further configured to resend the uplink data packet through the carrier channel of the first target frequency when the determining unit determines that the base station has not correctly received the uplink data packet. 14. The UE according to claim 13, characterized in that, The downlink data includes: uplink scheduling configuration information and power control information; The receiving unit is specifically configured to receive the uplink scheduling configuration information and the power control information sent by the base station through a first frequency carrier channel; The determining unit is further configured to determine the first target frequency carrier channel according to the uplink scheduling configuration information received by the receiving unit; The sending unit includes: a processing module and a sending module; wherein, The processing module is configured to adjust the transmission configuration information of the UE according to the uplink scheduling configuration information and power control information received by the receiving unit; The sending module is configured to send an uplink data packet to the base station through a first target frequency carrier channel according to the transmission configuration information adjusted by the processing module. 15. A base station, applied in a TDD-LTE system, is characterized in that, comprising: The sending unit is configured to send downlink data to the user equipment UE through a second target frequency carrier channel; wherein, the second target frequency carrier channel is adjacent to the downlink frequency carrier channel of the Frequency Division Duplex-Long Term Evolution FDD-LTE system frequency carrier channel; The receiving unit is configured to receive the uplink data packet sent by the UE through a second frequency carrier channel; wherein, the second frequency carrier channel is in a TDD-LTE system and is different from the downlink frequency carrier channel of the FDD-LTE system Adjacent frequency carrier channels; The sending unit is further configured to send HARQ feedback information to the UE through the second target frequency carrier channel. 16. The base station according to claim 15, characterized in that, The downlink data includes: uplink scheduling configuration information and power control information; The sending unit is specifically configured to send uplink scheduling configuration information and power control information to the UE through a second target frequency carrier channel. 17. A user equipment UE, applied in a TDD-LTE system, characterized in that it includes: The receiving unit is configured to receive the downlink data sent by the base station through the second target frequency carrier channel; wherein, the second target frequency carrier channel is adjacent to the downlink frequency carrier channel of the Frequency Division Duplex-Long Term Evolution FDD-LTE system frequency carrier channel; The sending unit is configured to send the uplink data packet through the second frequency carrier channel according to the downlink data received by the receiving unit; wherein, the second frequency carrier channel is in the TDD-LTE system, and the FDD-LTE system Frequency carrier channels that are not adjacent to the downlink frequency carrier channel; The receiving unit is further configured to receive the HARQ feedback information sent by the base station through the second target frequency carrier channel; a determining unit, configured to determine whether the base station correctly receives the uplink data packet according to the HARQ feedback information received by the receiving unit; The sending unit is further configured to resend the uplink data packet through the second frequency carrier channel when the determining unit determines that the base station has not correctly received the uplink data packet. 18. The UE according to claim 17, characterized in that, The downlink data includes: uplink scheduling configuration information and power control information; The receiving unit is specifically configured to receive the uplink scheduling configuration information and the power control information sent by the base station through a second target frequency carrier channel; The determining unit is further configured to determine the second frequency carrier channel according to the uplink scheduling configuration information received by the receiving unit; The sending unit includes: a processing module and a sending module; wherein, The processing module is configured to adjust the transmission configuration information of the UE according to the uplink scheduling configuration information and power control information received by the receiving unit; The sending module is configured to send an uplink data packet to the base station through a second frequency carrier channel according to the transmission configuration information adjusted by the processing module. 19. A data transmission system, applied to a TDD-LTE system, characterized in that it includes: a base station and a user equipment UE; wherein, The base station is the base station according to any one of claims 10-12, 15-17; The UE is the UE described in claim 13 or 14 or 17 or 18.

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