CN103596278A

CN103596278A - Method, device and system for data transmission

Info

Publication number: CN103596278A
Application number: CN201310611219.0A
Authority: CN
Inventors: 张忠皓; 李梦加; 陈昊; 李一喆; 张涛
Original assignee: China United Network Communications Group Co Ltd
Current assignee: China United Network Communications Group Co Ltd
Priority date: 2013-11-26
Filing date: 2013-11-26
Publication date: 2014-02-19

Abstract

The embodiment of the invention provides a method, device and system for data transmission and relates to the field of communication. The method, device and system for data transmission are used for guaranteeing correct transmission of data. The method comprises the steps that in a TDD-LTE system, downlink data are sent to UE by a base station through a first frequency carrier channel, wherein the first frequency carrier channel in the TDD-LTE system is not adjacent to an uplink frequency carrier channel of a FDD-LTE system; an uplink data package sent by the UE is received by the base station through a first target frequency carrier channel, wherein the first target frequency carrier channel is adjacent to the uplink frequency carrier channel in the FDD-LTE system; HARQ feedback information is sent to the UE by the base station through the first frequency carrier channel. The method, device and system for data transmission are suitable for the scenes for data transmission in the TDD-LTE system.

Description

Data transmission method, device and system

Technical Field

The present invention relates to the field of communications, and in particular, to a method, an apparatus, and a system for data transmission.

Background

An LTE (Long Term Evolution) system includes an FDD-LTE (Frequency Division duplex-Long Term Evolution) system and a TDD-LTE (Time Division duplex-Long Term Evolution) system, where the TDD-LTE system transmits and receives data in different Time slots of the same Frequency carrier channel.

In the existing TDD-LTE system, a base station sends downlink control information to a UE (user equipment) through a certain frequency carrier channel, and the UE parses uplink scheduling configuration information and power control information according to the downlink control information sent by the base station, and determines time-frequency resource information and transmission power information used by an uplink. Because the TDD-LTE system uses different time slots of the same frequency carrier channel for data transmission and reception, the uplink in which the UE transmits the uplink data packet is the frequency carrier channel used when the base station transmits the downlink control information to the UE. Therefore, the UE sends an uplink data packet to the base station according to the time-frequency resource information and the transmission power information by using the frequency carrier channel, the base station sends feedback information to the UE through the frequency carrier channel after receiving the uplink data packet, and the UE determines whether the base station correctly receives the uplink data packet according to the feedback information.

In the process of data transmission, if a certain frequency carrier channel is adjacent to an uplink frequency carrier channel of the FDD-LTE system, in the TDD-LTE system, the base station uses the frequency carrier channel to send downlink control information to the UE, and in the FDD-LTE system, the base station uses the uplink frequency carrier channel to receive an uplink data packet sent by the UE, which may interfere with each other, so that the UE cannot correctly receive the downlink control information, and thus data cannot be correctly transmitted.

Disclosure of Invention

The embodiment of the invention provides a method, a device and a system for data transmission, which are used for ensuring correct transmission of data.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

in a first aspect, an embodiment of the present invention provides a data transmission method, applied in a time division duplex-long term evolution TDD-LTE system, including: a base station sends downlink data to User Equipment (UE) through a first frequency carrier channel; the first frequency carrier channel is a frequency carrier channel which is not adjacent to an uplink frequency carrier channel of a frequency division duplex-long term evolution FDD-LTE system in the TDD-LTE system; the base station receives an 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 an uplink frequency carrier channel of the FDD-LTE system; and the base station sends hybrid automatic repeat request (HARQ) feedback information to the UE through the first frequency carrier channel.

In a second aspect, an embodiment of the present invention provides a data transmission method, applied in a TDD-LTE system, including: 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 which is not adjacent to an uplink frequency carrier channel of a frequency division duplex-long term evolution FDD-LTE system in the TDD-LTE system; 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 an uplink frequency carrier channel of the FDD-LTE system; 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; and if the UE determines that the base station does not correctly receive the uplink data packet, retransmitting the uplink data packet through the first target frequency carrier channel.

In a third aspect, an embodiment of the present invention provides a data transmission method, 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 a second target frequency carrier channel; wherein the second target frequency carrier channel is a frequency carrier channel adjacent to a downlink frequency carrier channel of a frequency division duplex-long term evolution (FDD-LTE) system; the base station receives an uplink data packet sent by the UE through a second frequency carrier channel; the second frequency carrier channel is a frequency carrier channel which is not adjacent to a downlink frequency carrier channel of the FDD-LTE system in the TDD-LTE system; and the base station sends HARQ feedback information to the UE through the second target frequency carrier channel.

In a fourth aspect, an embodiment of the present invention provides a data transmission method, which is applied to a TDD-LTE system, and includes: user Equipment (UE) receives 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 a downlink frequency carrier channel of a frequency division duplex-long term evolution (FDD-LTE) system; the UE sends an uplink data packet to the base station through a second frequency carrier channel according to the downlink data; the second frequency carrier channel is a frequency carrier channel which is not adjacent to a downlink frequency carrier channel of the FDD-LTE system in the TDD-LTE system; 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; and if the UE determines that the base station does not correctly receive the uplink data packet, retransmitting the uplink data packet through the second frequency carrier channel.

In a fifth aspect, an embodiment of the present invention provides a base station, which is applied in a TDD-LTE system, and includes: a sending unit, configured to send downlink data to a user equipment UE through a first frequency carrier channel; the first frequency carrier channel is a frequency carrier channel which is not adjacent to an uplink frequency carrier channel of a frequency division duplex-long term evolution FDD-LTE system in the TDD-LTE system; a receiving unit, configured to receive an 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 an uplink frequency carrier channel of the FDD-LTE system; the sending unit is further configured to send hybrid automatic repeat request HARQ feedback information to the UE through the first frequency carrier channel.

In a sixth aspect, an embodiment of the present invention provides a user equipment UE, applied to a TDD-LTE system, including: a receiving unit, configured to receive downlink data sent by a base station through a first frequency carrier channel; the first frequency carrier channel is a frequency carrier channel which is not adjacent to an uplink frequency carrier channel of a frequency division duplex-long term evolution FDD-LTE system in the TDD-LTE system; 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 a frequency carrier channel adjacent to an uplink frequency carrier channel of the FDD-LTE system; 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 first target frequency carrier channel when the determining unit determines that the base station does not correctly receive 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, and includes: a sending unit, configured to send 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 a downlink frequency carrier channel of a frequency division duplex-long term evolution (FDD-LTE) system; a receiving unit, configured to receive an uplink data packet sent by the UE through a second frequency carrier channel; the second frequency carrier channel is a frequency carrier channel which is not adjacent to a downlink frequency carrier channel of the FDD-LTE system in the TDD-LTE system; the sending unit is further configured to send HARQ feedback information to the UE through the second target frequency carrier channel.

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 second target frequency carrier channel is a frequency carrier channel adjacent to a downlink frequency carrier channel of a frequency division duplex-long term evolution (FDD-LTE) system; a sending unit, configured to send an uplink data packet through a second frequency carrier channel according to the downlink data received by the receiving unit; the second frequency carrier channel is a frequency carrier channel which is not adjacent to a downlink frequency carrier channel of the FDD-LTE system in the TDD-LTE system; the receiving unit is further configured to receive, through the second target frequency carrier channel, the HARQ feedback information sent by the base station; 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 does not correctly receive the uplink data packet.

In a ninth aspect, an embodiment of the present invention provides a system for data transmission, including: a base station and 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 invention provides a method, a device and a system for data transmission, if a first target frequency carrier channel of a TDD-LTE system is adjacent to an uplink frequency carrier channel in an FDD-LTE system, a base station sends downlink data comprising uplink scheduling configuration information and power control information to UE through the first frequency carrier channel which is not adjacent to the uplink frequency carrier channel in the FDD-LTE system, so that the UE adjusts the transmission configuration information of the UE according to the downlink data comprising the uplink scheduling configuration information and the power control information sent by the base station, further sends an uplink data packet to the base station through the first target frequency carrier channel according to the transmission configuration information, and when the base station receives the uplink data packet sent by the UE through the first target frequency carrier channel, the base station sends feedback information to the UE through the first frequency carrier channel which is not adjacent to the uplink frequency carrier channel in the FDD-LTE system, and the UE judges whether the base station correctly receives the uplink data packet sent by the UE according to the received HARQ feedback information. Because the base station sends downlink data to the UE through the first frequency carrier channel which is not adjacent to the uplink frequency carrier channel in the FDD-LTE system, the interference generated when the base station receives the uplink data packet sent by the UE through the uplink frequency carrier channel in the FDD-LTE system is avoided, and the correct transmission of the data is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic flowchart of a data transmission method according to an embodiment of the present invention;

fig. 2 is a flowchart illustrating another data transmission method according to an embodiment of the present invention;

fig. 3 is a flowchart illustrating another data transmission method according to an embodiment of the present invention;

fig. 4 is a flowchart illustrating another data transmission method according to an embodiment of the present invention;

fig. 5 is a flowchart illustrating another data transmission method according to an embodiment of the present invention;

fig. 6 is a flowchart illustrating another data transmission method according to an embodiment of the present invention;

fig. 7 is a functional diagram of a base station according to an embodiment of the present invention;

fig. 8 is a functional diagram of another base station according to an embodiment of the present invention;

fig. 9 is a functional diagram of a user equipment UE according to an embodiment of the present invention;

fig. 10 is a functional diagram of a sending unit according to an embodiment of the present invention;

fig. 11 is a functional diagram of another base station according to an embodiment of the present invention;

fig. 12 is a functional diagram of another UE according to an embodiment of the present invention;

fig. 13 is a functional diagram of another transmitting unit according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a data transmission system according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

An embodiment of the present invention provides a data transmission method, which is applied to a TDD-LTE (time division duplex-Long Term Evolution) system, and as shown in fig. 1, the method includes:

101. the base station transmits downlink data to a User Equipment (UE) through a first frequency carrier channel.

The first Frequency carrier channel is a Frequency carrier channel which is not adjacent to an uplink Frequency carrier channel of an FDD-LTE (Frequency Division duplex-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 of the FDD-LTE system, when the base station transmits downlink data to the UE through the first target frequency carrier channel, the downlink data and an uplink data packet transmitted by the UE and received by the base station through the uplink frequency carrier channel in the FDD-LTE system mutually interfere, in order to avoid interference between downlink data transmission from the base station to the UE in the TDD-LTE system and uplink data packet reception from the UE in the FDD-LTE system, in the TDD-LTE system, the base station transmits downlink data to the UE through a first frequency carrier channel that is not adjacent to an uplink frequency carrier channel of the FDD-LTE system, and the UE adjusts the transmission configuration information of the UE according to the downlink data sent by the base station, and then sends an uplink data packet to the base station according to the transmission configuration information.

It should be noted that the downlink data may be control related information, so that the UE may determine, according to the control related information, related information of a first target frequency carrier channel used when the UE sends an uplink data packet to the base station. 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, according to the data related information, related information of an uplink data packet that the UE needs to send to the base station.

It should be noted that, when the base station transmits 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, by the base station, downlink data to the UE through the first frequency carrier channel is: and the base station sends 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 relevant information of 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, to the UE, other downlink data besides the uplink scheduling configuration information and the power controller information through the first frequency carrier channel, which is not limited in the present invention.

Further, the base station transmits PDCCH (Physical Downlink Control Channel) information and PCFICH (Physical Control Format Indicator Channel) information to the UE through a 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 (Orthogonal Frequency Division Multiplexing) symbols occupied by transmission of PDCCH information in one subframe.

Specifically, if a first target frequency carrier channel of the TDD-LTE system is adjacent to an uplink frequency carrier channel in the FDD-LTE system, and when the base station sends PDCCH information and PCFICH information to the UE through the first target frequency carrier channel, the base station may interfere with an uplink data packet sent by the UE and received by the base station through the uplink frequency carrier channel in the FDD-LTE system, in order to avoid interference between the PDCCH information and PCFICH information sent by the base station to the UE in the TDD-LTE system and the uplink data packet sent by the UE and received by the base station in the FDD-LTE system, in the TDD-LTE system, the base station sends PDCCH information and PCFICH information carrying uplink scheduling information and power control information to the UE through the first frequency carrier channel which is not adjacent to the uplink frequency carrier channel of the FDD-LTE system.

102. And the base station receives an 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 an uplink frequency carrier channel of the FDD-LTE system.

Specifically, the base station continuously detects each frequency carrier channel in the TDD-LTE system, and if it is detected that the first target frequency carrier channel carries the uplink data packet, the base station receives the uplink data packet carried in the first target frequency carrier channel.

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 receives the uplink data packet sent by the UE through the first target frequency carrier channel adjacent to the uplink frequency carrier channel of the FDD-LTE system, at this time, in the FDD-LTE system, the base station also receives the uplink data packet sent by the UE, so that the uplink data packet sent by the UE received by the base station in the TDD-LTE system and the uplink data packet sent by the UE received by the base station in the FDD-LTE system do not interfere with each other.

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

Specifically, if a first target frequency carrier channel of the TDD-LTE system is adjacent to an uplink frequency carrier channel of the FDD-LTE system, in order to avoid interference between HARQ feedback information sent by a base station to a UE in the TDD-LTE system and uplink data packets sent by the UE received by the base station in the FDD-LTE system, the base station sends the HARQ feedback information to the UE through the first frequency carrier channel which is not adjacent to the uplink frequency carrier channel of the FDD-LTE system in the TDD-LTE system, so that the UE determines whether the base station correctly receives the uplink data packets sent by the UE according to the received HARQ feedback information.

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

Wherein, the PHICH information carries HARQ feedback information.

Specifically, if a first target frequency carrier channel of the TDD-LTE system is adjacent to an uplink frequency carrier channel of the FDD-LTE system, in order to avoid interference between HARQ feedback information sent by a base station to a UE in the TDD-LTE system and uplink data packets sent by the base station to receive the UE in the FDD-LTE system, in the TDD-LTE system, the base station sends PHICH information carrying the HARQ feedback information to the UE through the first frequency carrier channel which is not adjacent to the uplink frequency carrier channel in the FDD-LTE system, so that the UE parses the PHICH information carried in the PHICH information after receiving the HARQ feedback information, and further determines whether the base station correctly receives the uplink data packets sent by the UE according to the parsed HARQ feedback information.

The embodiment of the invention provides a data transmission method, when a first target frequency carrier channel of a TDD-LTE system is adjacent to an uplink frequency carrier channel in an FDD-LTE system, a base station sends downlink data comprising uplink scheduling configuration information and power control information to UE through the first frequency carrier channel which is not adjacent to the uplink frequency carrier channel in the FDD-LTE system, so that the UE adjusts the transmission configuration information of the UE according to the downlink data comprising the uplink scheduling configuration information and the power control information sent by the base station, further sends an uplink data packet to the base station through the first target frequency carrier channel according to the transmission configuration information, when the base station receives the uplink data packet sent by the UE through the first target frequency carrier channel, the base station sends HARQ feedback information to the UE through the first frequency carrier channel which is not adjacent to the uplink frequency carrier channel in the FDD-LTE system, and the UE judges whether the base station correctly receives the uplink data packet sent by the UE according to the received HARQ feedback information. Because the base station sends downlink data to the UE through the first frequency carrier channel which is not adjacent to the uplink frequency carrier channel in the FDD-LTE system, the interference generated when the base station receives the uplink data packet sent by the UE through the uplink frequency carrier channel in the FDD-LTE system is avoided, and the correct transmission of the data is ensured.

An embodiment of the present invention provides a data transmission method, which is applied to a TDD-LTE system, and as shown in fig. 2, the method includes:

201. and the UE receives downlink data sent by the base station through a first frequency carrier channel.

The first frequency carrier channel is a frequency carrier channel which is not adjacent to an uplink frequency carrier channel of an FDD-LTE 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, because the base station transmits 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, the UE receives the downlink data transmitted 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.

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

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

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

Furthermore, the UE receives PDCCH information and PCFICH information transmitted by the base station through a 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 transmission of PDCCH information in one subframe.

Specifically, if a first target frequency carrier channel of the TDD-LTE system is adjacent to an uplink frequency carrier channel in the FDD-LTE system, because the base station sends PDCCH information and PCFICH information carrying uplink scheduling configuration 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, the UE receives the PDCCH information and PCFICH information carrying 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.

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

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

Specifically, when the UE receives downlink data sent by the base station and the downlink data is control related information, the UE may determine related information of a first target frequency carrier channel according to the downlink data, so as to send an uplink data packet through the first target frequency carrier channel. When the downlink data is data-related information, the UE determines, according to the downlink data, related information of an uplink data packet that needs to be sent, so that the uplink data packet can be sent through the first target frequency carrier channel.

Further, the step of using the downlink data as the control related information, that is, using the downlink data, includes: when the uplink scheduling configuration information and the power control information are received, the UE sending an uplink data packet to the base station through a first target frequency carrier channel according to the downlink data includes: the UE adjusts the transmission configuration information of the UE according to the uplink scheduling configuration information and the power control information; and sending an uplink data packet to the base station through a first target frequency carrier channel according to the adjusted transmission configuration information.

Specifically, if the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel of the FDD-LTE system, after receiving the PDCCH information and PCFICH information carrying uplink scheduling configuration information and power control information sent by the base station, analyzing the number of OFDM symbols occupied by PDCCH information carried in the PCFICH information, thereby determining the physical resource position of the PDCCH information according to the number of OFDM symbols occupied by the PDCCH information, and further, the uplink scheduling configuration information and power control information including time-frequency resource information and transmission format information for uplink sent by the base station to the UE are resolved at the physical resource location in the PDCCH information, and then the UE adjusts the transmission configuration information of the UE 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. And sending an uplink data packet to the base station through a first target frequency carrier channel adjacent to an uplink frequency carrier channel of the FDD-LTE system according to the adjusted transmission configuration information, so that the base station can correctly identify the uplink data packet, and the UE sends the uplink data packet by adopting proper power control information specified by the base station, thereby avoiding 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 an 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 that the uplink data packet sent by the UE received by the base station in the TDD-LTE system and the uplink data packet sent by the UE received by the base station in the FDD-LTE system do not interfere with each other.

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

Specifically, if a first target frequency carrier channel of the TDD-LTE system is adjacent to an uplink frequency carrier channel of the FDD-LTE system, the UE sends an 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 according to time-frequency resource information of an uplink specified by the base station, a transmission format specified by the base station, and power control information specified by the base station, and because the base station sends HARQ feedback information to the UE through the first frequency carrier channel not adjacent to the uplink frequency carrier channel of the FDD-LTE system, the UE receives HARQ feedback information sent by the base station through the first frequency carrier channel not adjacent to the uplink frequency carrier channel of the FDD-LTE system.

Further, the UE receives physical HARQ indicator channel PHICH information sent by the base station through a 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 of the FDD-LTE system, after the UE transmits an uplink data packet to the base station through a first target frequency carrier channel adjacent to an uplink frequency carrier channel of the FDD-LTE system 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, since the base station transmits PHICH information carrying HARQ feedback information to the UE through the first frequency carrier channel which is not adjacent to the uplink frequency carrier channel of the FDD-LTE system, the UE receives PHICH information carrying HARQ feedback information transmitted by the base station through a first frequency carrier channel that is not adjacent to an uplink frequency carrier channel of the FDD-LTE system, and resolving 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 a downlink subframe or a special subframe, and in order to ensure that the UE can receive PHICH information carrying HARQ feedback information sent by the base station on a first frequency carrier channel different from the first target frequency carrier channel, uplink and downlink matching information carried in the first target frequency carrier channel and the first frequency carrier channel must be consistent.

204. And 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 that is not adjacent to the uplink frequency carrier channel of the FDD-LTE system.

If the indication information in the HARQ feedback information received by the UE through the first frequency carrier channel which 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; if the indication information included in the HARQ feedback information received by the UE through the first frequency carrier channel which is not adjacent to the uplink frequency carrier channel of the FDD-LTE system is NACK, the UE determines that the base station does not correctly receive the uplink data packet.

205. And if the UE determines that the base station does not correctly receive the uplink data packet, retransmitting 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 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, the UE transmits 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 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, receives PHICH information retransmitted by the base station through the first frequency carrier channel not adjacent to the uplink frequency carrier channel of the FDD-LTE system, acquires HARQ feedback information carried in the PHICH information, determines whether the base station correctly receives the uplink data packet according to the indication information included in the HARQ feedback information, and if the UE determines that the base station has not correctly received the uplink data packet, the UE retransmits 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 until the UE determines that the base station correctly receives the uplink data packet.

The embodiment of the invention provides a data transmission method, when a first target frequency carrier channel of a TDD-LTE system is adjacent to an uplink frequency carrier channel in an FDD-LTE system, the UE receives downlink data including uplink scheduling configuration information and power control information transmitted by the base station through a first frequency carrier channel that is not adjacent to an uplink frequency carrier channel in the FDD-LTE system, and adjusts the transmission configuration information of itself according to the uplink scheduling configuration information and the power control information included in the downlink data, and further transmitting an uplink data packet to the base station through the first target frequency carrier channel according to the adjusted transmission configuration information, and then, and the UE receives HARQ feedback information sent by the base station through a first frequency carrier channel which is not adjacent to an uplink frequency carrier channel in the FDD-LTE system, and judges whether the base station correctly receives the uplink data packet or not according to the HARQ feedback information. Because the UE receives the downlink data sent by the base station through the first frequency carrier channel which is not adjacent to the uplink frequency carrier channel in the FDD-LTE system, the interference generated when the base station receives the uplink data packet sent by the UE through the uplink frequency carrier channel in the FDD-LTE system is avoided, and the correct transmission of the data is ensured.

An embodiment of the present invention provides a data transmission method, which is applied to a TDD-LTE system, and as shown in fig. 3, the method includes:

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

Specifically, the base station needs to detect an uplink frequency carrier channel of the FDD-LTE system, and determine a bandwidth range in which the uplink frequency carrier channel is located in the FDD-LTE system, so that a frequency carrier channel outside the bandwidth range can be selected as a 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 User Equipment (UE) through a first frequency carrier channel, and the UE receives the uplink scheduling configuration information and the power control information sent by the base station through the first frequency carrier channel.

The first frequency carrier channel is a frequency carrier channel which is not adjacent to an uplink frequency carrier channel of a frequency division duplex-long term evolution FDD-LTE system in the TDD-LTE system.

Specifically, step 101 and step 201 may be referred to, and are not described herein again.

303. And 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 may determine, according to the uplink frequency carrier channel information, an uplink frequency carrier channel used when sending the uplink data packet, that is, the UE determines, as the first target frequency carrier channel for sending the uplink data packet, the uplink frequency carrier channel indicated by the uplink frequency carrier channel information in the uplink scheduling configuration information.

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

Specifically, after acquiring the uplink scheduling configuration information and the power control information, the UE may determine, according to the power control information, a transmission power used when the UE sends an uplink data packet to the base station. And determining time-frequency resource information and transmission format information used when the UE sends an uplink data packet to the base station according to the uplink scheduling configuration information. Reference may be made to step 202.

305. And the UE sends an uplink data packet to the base station through a 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.

Specifically, refer to step 102 and step 202, which are not described herein again.

306. And 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, refer to step 103 and step 203, which are not described herein again.

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

Specifically, refer to step 204, which is not described herein again.

It should be noted that, if the UE determines that the base station correctly receives the uplink data packet, it indicates that the UE does not need to resend the data packet, and step 309 is executed. If the UE determines that the base station does not correctly receive the uplink data packet, it indicates that the UE needs to resend the data packet, and the UE needs to perform step 308 and step 309.

308. And if the UE determines that the base station does not correctly receive the uplink data packet, the UE retransmits the uplink data packet through the first target frequency carrier channel, and the base station receives the uplink data packet through the first target frequency carrier channel.

Specifically, refer to step 102 and step 205, which are not described herein again.

It should be noted that, if the UE determines that the base station does not correctly receive the uplink data packet, the UE needs to send the uplink data packet to the base station again, and determines whether the base station correctly receives the uplink data packet according to HARQ feedback information sent by the base station again, that is, after step 307, may jump to step 306 until it is determined that the base station correctly receives the uplink data packet.

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

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.

It should be noted that, after receiving the downlink data, the UE may send an uplink data packet to the base station, which may refer to step 305 and step 308, which are not described herein again.

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

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

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

Specifically, if a second target frequency carrier channel of the TDD-LTE system is adjacent to a downlink frequency carrier channel in the FDD-LTE system, and when the base station sends downlink data to the UE through the second target frequency carrier channel, interference will not be generated between the base station and the UE sending the downlink data through the downlink frequency carrier channel in the FDD-LTE system, the base station sends the downlink data including uplink scheduling configuration information and power controller information to the UE through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system, 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 an uplink data packet to the base station according to the transmission configuration information.

It should be noted that the downlink data may be control related information, so that the UE may determine, according to the control related information, related information of a second frequency carrier channel used when the UE sends the uplink data packet to the base station. 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, according to the data related information, related information of an uplink data packet that the UE needs to send to the base station.

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

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

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

Further, the base station transmits 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 the power control information. The PCFICH information is used to indicate the number of OFDM symbols occupied by transmission of PDCCH information in one subframe.

Specifically, if a second target frequency carrier channel of the TDD-LTE system is adjacent to a downlink frequency carrier channel in the FDD-LTE system, and when the base station sends PDCCH information and PCFICH information to the UE through the second target frequency carrier channel, interference will not be generated with sending downlink data to the UE through the downlink frequency carrier channel by the base station in the FDD-LTE system, and the base station sends the PDCCH information and the PCFICH information carrying uplink scheduling information and power control information to the UE through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system.

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

The second frequency carrier channel is a frequency carrier channel which is not adjacent to a 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, and if it is detected that the second frequency carrier channel carries the uplink data packet, 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 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 of the FDD-LTE system, and in the FDD-LTE system, the base station sends downlink data to the UE by using the downlink frequency carrier channel, so that interference generated when the base station in the FDD-LTE system sends downlink data to the UE to the base station in the TDD-LTE system to receive the uplink data packet sent by the UE is avoided.

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

Specifically, if a second target frequency carrier channel of the TDD-LTE system is adjacent to a downlink frequency carrier channel in the FDD-LTE system, and the base station sends HARQ feedback information to the UE through the second target frequency carrier channel, the base station does not interfere with downlink data sent to the UE through the downlink frequency carrier channel by the base station in the FDD-LTE system, and the base station sends the 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 determines whether the base station correctly receives an uplink data packet sent by the UE according to the received HARQ feedback information.

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

Wherein, the PHICH information carries HARQ feedback information.

Specifically, if a second target frequency carrier channel of the TDD-LTE system is adjacent to a downlink frequency carrier channel in the FDD-LTE system, and when the base station sends HARQ feedback information to the UE through the second target frequency carrier channel, interference will not be generated with downlink data sent by the base station to the UE through the downlink frequency carrier channel in the FDD-LTE system, the base station sends PHICH information carrying the HARQ feedback information to the UE through the second target frequency carrier channel, so that the UE parses the HARQ feedback information carried in the PHICH information after receiving the PHICH information, and further determines whether the base station correctly receives an uplink data packet sent by the UE according to the parsed HARQ feedback information.

The embodiment of the invention provides a data transmission method, when a second target frequency carrier channel of a TDD-LTE system is adjacent to a downlink frequency carrier channel in an FDD-LTE system, a base station sends downlink data comprising uplink scheduling configuration information and power control information to UE through the second target frequency carrier channel, so that the UE adjusts the transmission configuration information of the UE according to the downlink data comprising the uplink scheduling configuration information and the power control information sent by the base station, further sends an uplink data packet to the base station through a second frequency carrier channel which is not adjacent to the downlink frequency carrier channel in the FDD-LTE system according to the transmission configuration information, and when the base station receives the uplink data packet sent by the UE, the base station sends HARQ feedback information to the UE through the second target frequency carrier channel, so that the UE receives HARQ feedback information sent by the base station through the second frequency carrier channel which is not adjacent to the downlink frequency carrier channel in the FDD-LTE system And judging whether the base station correctly receives the uplink data packet sent by the UE according to the received HARQ feedback information. Because the base station receives the uplink data packet sent by the UE through the second frequency carrier channel which is not adjacent to the downlink frequency carrier channel in the FDD-LTE system, the interference generated when the base station receives the uplink data packet sent by the UE through the second frequency carrier channel which is not adjacent to the downlink frequency carrier channel in the FDD-LTE system in the TDD-LTE system when the base station sends downlink data to the UE through the downlink frequency carrier channel in the FDD-LTE system is avoided, and the correct transmission of data is ensured.

An embodiment of the present invention provides a data transmission method, which is applied to a TDD-LTE system, and as shown in fig. 5, the method includes:

501. and the UE receives the downlink data sent by the base station through a 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, because the base station transmits downlink data to the UE through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system, the UE receives the downlink data transmitted by the base station through the 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 control related information, and at this time, the UE may determine, according to the control related information, related information of a second frequency carrier channel used when the UE sends the uplink data packet to the base station. The downlink data may also be data-related information, that is, data information sent by the base station to the UE, and at this time, the UE may determine, according to the data-related information, related information of an uplink data packet that the UE needs to send to the base station.

At this time, 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.

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

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

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

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

Further, the step of using the downlink data as the control related information, that is, using the downlink data, includes: when the uplink scheduling configuration information and the power control information are received, the UE sending an uplink data packet to the base station through a second frequency carrier channel according to the downlink data includes: the UE adjusts the transmission configuration information of the UE according to the uplink scheduling configuration information and the power control information; and sending an uplink data packet to the base station through a second frequency carrier channel according to the adjusted transmission configuration information.

Specifically, if a second target frequency carrier channel of the TDD-LTE system is adjacent to a downlink frequency carrier channel of 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, sending downlink data to the UE through the downlink frequency carrier channel by the base station in the FDD-LTE system will interfere with receiving of the uplink data packet sent by the UE through the target frequency carrier channel by the base station in the TDD-LTE system, and in order to avoid interference of sending downlink data to the UE by the base station in the FDD-LTE system with receiving of the uplink data packet sent by the UE by the base station in the TDD-LTE system, after receiving PDCCH information and PCFICH information carrying uplink scheduling configuration information and power control information sent by the base station, the UE analyzes the number of OFDM symbols occupied by the PDCCH information carried in the PCFICH information, and further, uplink scheduling configuration information and power control information which are carried in the PDCCH information and comprise time-frequency resource information and transmission format information which are sent to the UE by the base station and used for an uplink are analyzed on the physical resource position, and the UE adjusts the transmission configuration information according to the time-frequency resource information of the uplink appointed by the base station, the transmission format appointed by the base station and the power control information appointed by the base station. And sending an uplink data packet to the base station through a second frequency carrier channel which is not adjacent to a downlink frequency carrier channel of the FDD-LTE system according to the adjusted transmission configuration information, so that the base station can correctly identify the uplink data packet, and the UE sends the uplink data packet by adopting proper power control information appointed by the base station, thereby avoiding interference to other base stations.

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

Specifically, if a second target frequency carrier channel of the TDD-LTE system is adjacent to a downlink frequency carrier channel of the FDD-LTE system, the UE sends an 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 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, and because the base station sends HARQ feedback information to the UE through the second target frequency carrier channel that is adjacent to the downlink frequency carrier channel of the FDD-LTE system, the UE receives HARQ feedback information sent by the base station through the second target frequency carrier channel that is 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 of the FDD-LTE system, the UE 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, after transmitting an uplink data packet to the base station through a second frequency carrier channel which is not adjacent to a downlink frequency carrier channel of the FDD-LTE system, since the base station transmits PHICH information carrying HARQ feedback information to the UE through a second target frequency carrier channel adjacent to a downlink frequency carrier channel of the FDD-LTE system, the UE receives PHICH information carrying HARQ feedback information transmitted by the base station through a second target frequency carrier channel adjacent to a downlink frequency carrier channel of the FDD-LTE system, and resolving HARQ feedback information carried in the PHICH information according to the acquired PHICH information.

504. And 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 in the HARQ feedback information received by the UE through a second target frequency carrier channel adjacent to a downlink frequency carrier channel of the FDD-LTE system is ACK, the UE determines that the base station correctly receives the uplink data packet; and 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 does not correctly receive the uplink data packet.

505. And if the UE determines that the base station does not correctly receive the uplink data packet, retransmitting 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, the UE retransmits 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 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, and receives PHICH information retransmitted by the base station through the downlink frequency carrier channel of the FDD-LTE system, and acquires HARQ feedback information carried in the PHICH information, determines whether the base station correctly receives the uplink data packet according to the indication information included in the HARQ feedback information, if the UE determines that the base station has not correctly received the uplink data packet, the UE retransmits 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 determines that the base station correctly receives the uplink data packet.

The embodiment of the invention provides a data transmission method, when a second target frequency carrier channel of a TDD-LTE system is adjacent to a downlink frequency carrier channel in an FDD-LTE system, UE receives downlink data which is sent by a base station and comprises uplink scheduling configuration information through the second target frequency carrier channel, adjusts the transmission configuration information of the UE according to the uplink scheduling configuration information and power control information which are contained in the downlink data, further sends an uplink data packet to the base station through a second frequency carrier channel which is not adjacent to the downlink frequency carrier channel in the FDD-LTE system according to the adjusted transmission configuration information, and then receives HARQ feedback information sent by the base station through the second target frequency carrier channel and judges whether the base station correctly receives the uplink data packet according to the HARQ feedback information. Because the UE sends the uplink data packet to the base station through the second frequency carrier channel which is not adjacent to the downlink frequency carrier channel in the FDD-LTE system, at the moment, the base station receives the uplink data packet sent by the UE through the second frequency carrier channel which is not adjacent to the downlink frequency carrier channel in the FDD-LTE system, the interference generated when the base station sends downlink data to the UE through the second frequency carrier channel which is not adjacent to the downlink frequency carrier channel in the FDD-LTE system in the TDD-LTE system when the base station sends the downlink data to the UE through the downlink frequency carrier channel in the FDD-LTE system is avoided, and the correct transmission of data is ensured.

An embodiment of the present invention provides a data transmission method, which is applied to a TDD-LTE system, and as shown in fig. 6, the method includes:

601. the base station sends uplink scheduling configuration information and power control information to User Equipment (UE) through a second target frequency carrier channel, and 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.

Specifically, step 401 and step 501 may be referred to, and are not described herein again.

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

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

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

604. And 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 the second frequency carrier channel.

Specifically, refer to step 402 and step 502, which are not described herein again.

605. And 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, refer to step 403 and step 503, which are not described herein again.

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

Specifically, refer to step 504, which is not described herein again.

It should be noted that, if the UE determines that the base station correctly receives the uplink data packet, it indicates that the UE does not need to resend the data packet, and step 608 is executed. If the UE determines that the base station does not correctly receive the uplink data packet, it indicates that the UE needs to resend the data packet, and the UE needs to perform step 607 and 608.

607. And if the UE determines that the base station does not correctly receive the uplink data packet, the UE retransmits 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.

Specifically, refer to step 402 and step 505, which are not described herein again.

It should be noted that, if the UE determines that the base station does not correctly receive the uplink data packet, the UE needs to send the uplink data packet to the base station again, and determines whether the base station correctly receives the uplink data packet according to HARQ feedback information sent by the base station again, that is, after step 606, may jump to step 605 until it is determined that the base station correctly receives the uplink data packet.

608. And the UE receives the downlink data sent by the base station through the second target frequency carrier channel.

It should be noted that, when receiving the downlink data, the UE may send an uplink data packet to the base station, which may refer to step 604 and step 607, which are not described herein again.

As shown in fig. 7, which is a functional diagram of a base station provided in an embodiment of the present invention, and is applied to a TDD-LTE system, referring to fig. 7, the base station includes: a transmitting unit 701 and a receiving unit 702.

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

Specifically, when a first target frequency carrier channel of the TDD-LTE system is adjacent to an uplink frequency carrier channel of the FDD-LTE system, and downlink data is sent to the UE through the first target frequency carrier channel, the sending unit 701 may interfere with an uplink data packet sent by the UE and received by a base station in the FDD-LTE system through the uplink frequency carrier channel, in order to avoid that, in the TDD-LTE system, the sending unit 701 sends the downlink data to the UE and interferes with the uplink data packet sent by the UE and received by the base station in the FDD-LTE system, in the TDD-LTE system, the sending unit 701 sends the downlink data including uplink scheduling configuration information and power controller information to the UE through the first frequency carrier channel which is not adjacent to the uplink frequency carrier channel of the FDD-LTE system, so that the UE adjusts its own transmission configuration according to the uplink scheduling configuration information and power controller information sent by the base station And the information is set, and then an uplink data packet is sent to the base station according to the transmission configuration information.

Note that, when the transmitting unit 701 transmits downlink data to the UE through the first frequency carrier channel for the first time, the downlink data is control related information.

In this case, the transmitting unit 701 is specifically configured to transmit the uplink scheduling configuration information and the power control information to the UE through a first frequency carrier channel.

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

Further, the transmitting unit 701 is specifically configured to transmit PDCCH information and PCFICH information to the UE through a first frequency carrier channel.

Specifically, when the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel of the FDD-LTE system, when the PDCCH information and the PCFICH information are transmitted to the UE through the first target frequency carrier channel, will interfere with the base station receiving the uplink data packet transmitted by the UE through the uplink frequency carrier channel in the FDD-LTE system, in order to avoid interference between the sending unit 701 sending PDCCH information and PCFICH information to the UE and the uplink data packet received by the base station and sent by the UE in the FDD-LTE system, in the TDD-LTE system, the sending unit 701 sends PDCCH information and PCFICH information carrying uplink scheduling information and power control information to the UE through a first frequency carrier channel that is not adjacent to an uplink frequency carrier channel of the FDD-LTE system.

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

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

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

Specifically, when the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel of the FDD-LTE system, in order to avoid interference between the HARQ feedback information sent by the sending unit 701 to the UE in the TDD-LTE system and the uplink data packet sent by the UE received by the base station in the FDD-LTE system, the sending unit 701 sends the HARQ feedback information to the UE through the first frequency carrier channel which is not adjacent to the uplink frequency carrier channel of the FDD-LTE system in the TDD-LTE system, so that the UE determines 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, when the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel of the FDD-LTE system, in order to avoid interference between the HARQ feedback information sent by the base station in the TDD-LTE system to the UE and the uplink data packet sent by the base station in the FDD-LTE system and received by the UE, the sending unit 701 sends PHICH information carrying the HARQ feedback 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 in the TDD-LTE system, so that the UE parses the HARQ feedback information carried in the PHICH information after receiving the PHICH information, and further determines whether the base station correctly receives the uplink data packet sent by the UE according to the parsed HARQ feedback information.

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

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

Specifically, the determining unit 703 detects an uplink frequency carrier channel of the FDD-LTE system, and determines a bandwidth range in which the uplink frequency carrier channel is located in the FDD-LTE system, so that a 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 determining unit 703 may also determine the first frequency carrier channel according to other methods, which is not limited in the present invention.

The embodiment of the invention provides a base station, if a first target frequency carrier channel of a TDD-LTE system is adjacent to an uplink frequency carrier channel of an FDD-LTE system, the base station sends downlink data comprising uplink scheduling configuration information and power control information to UE through the first frequency carrier channel which is not adjacent to the uplink frequency carrier channel of the FDD-LTE system, so that the UE adjusts the transmission configuration information of the UE according to the downlink data comprising the uplink scheduling configuration information and the power control information sent by the base station, further sends an uplink data packet to the base station through the first target frequency carrier channel according to the transmission configuration information, and when the base station receives the uplink data packet sent by the UE through the first target frequency carrier channel, the base station sends HARQ feedback information to the UE through the first frequency carrier channel which is not adjacent to the uplink frequency carrier channel of the FDD-LTE system, and the UE judges whether the base station correctly receives the uplink data packet sent by the UE according to the received HARQ feedback information. Because the base station sends downlink data to the UE through the first frequency carrier channel which is not adjacent to the uplink frequency carrier channel in the FDD-LTE system, the interference generated when the base station receives the uplink data packet sent by the UE through the uplink frequency carrier channel in the FDD-LTE system is avoided, and the correct transmission of the data is ensured.

As shown in fig. 9, which is a functional schematic diagram of a user equipment UE provided in an embodiment of the present invention, the UE is applied to a TDD-LTE system, and referring to fig. 9, the UE includes: receiving section 901, transmitting section 902, and determining section 903.

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

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

In this case, 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.

That is to say, after receiving the uplink scheduling configuration information, the receiving unit 901 may determine, according to the uplink frequency carrier channel information, the uplink frequency carrier channel used when it sends the uplink data packet to the base station, by knowing the uplink frequency carrier channel information.

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

Specifically, when the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel of the FDD-LTE system, since the base station sends PDCCH information and PCFICH information carrying uplink scheduling configuration 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, the receiving unit 901 receives the PDCCH information and PCFICH information carrying 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.

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

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 the power control information received by the receiving unit 901.

Specifically, when the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel of the FDD-LTE system, after receiving PDCCH information and PCFICH information carrying uplink scheduling configuration information and power control information sent by the base station, analyzing the number of OFDM symbols occupied by PDCCH information carried in the PCFICH information, thereby determining the physical resource position of the PDCCH information according to the number of OFDM symbols occupied by the PDCCH information, and further, the uplink scheduling configuration information and power control information, which include time-frequency resource information and transmission format information for an uplink sent by the base station to the UE, carried in the PDCCH information are resolved at the physical resource location, so that, the processing module 9021, and adjusting the transmission configuration information of the base station according to the time-frequency resource information of the uplink appointed by the base station, the transmission format appointed by the base station and the power control information appointed by the base station.

The sending module 9022 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 9021.

Specifically, the sending module 9022 sends the uplink data packet to the base station through a first target frequency carrier channel adjacent to an uplink frequency carrier channel of the FDD-LTE system according to the transmission configuration information adjusted by the processing module 9021, so that the base station can correctly identify the uplink data packet, and the UE sends the uplink data packet by using 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 HARQ feedback information sent by the base station through the first frequency carrier channel.

Specifically, when a first target frequency carrier channel of the TDD-LTE system is adjacent to an uplink frequency carrier channel of the FDD-LTE system, according to time-frequency resource information of an uplink specified by a base station, a transmission format specified by the base station, and power control information specified by the base station, after the transmitting unit 902 transmits an 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 transmits HARQ feedback information to the UE through the first frequency carrier channel not adjacent to the uplink frequency carrier channel of the FDD-LTE system, the receiving unit 901 receives HARQ feedback information transmitted by the base station through the first frequency carrier channel not adjacent to the uplink frequency carrier channel of the FDD-LTE system.

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

Wherein, the PHICH information carries HARQ feedback information.

Specifically, when the first target frequency carrier channel of the TDD-LTE system is adjacent to the uplink frequency carrier channel of the FDD-LTE system, 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, after the transmitting unit 902 transmits 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 transmits PHICH information carrying HARQ feedback information to the UE through the first frequency carrier channel which is not adjacent to the uplink frequency carrier channel of the FDD-LTE system, the receiving unit 901 receives PHICH information carrying HARQ feedback information sent by a base station through a first frequency carrier channel that is not adjacent to an uplink frequency carrier channel of the FDD-LTE system, and resolving 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 correctly receives the uplink data packet according to 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.

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 which is 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, when the determining unit 903 determines that the base station does not correctly receive the uplink data packet, resend the uplink data packet through the first target frequency carrier channel.

Specifically, when the determining unit 903 determines that the base station does not correctly receive the uplink data packet, the sending unit 902 sends the uplink data packet to the base station through a first target frequency carrier channel adjacent to an uplink frequency carrier channel of the FDD-LTE system 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, which are received by the receiving unit 901.

At this time, the receiving unit 901 receives PHICH information retransmitted by the base station through a first frequency carrier channel which is not adjacent to an uplink frequency carrier channel of the FDD-LTE system, and obtains HARQ feedback information carried in the PHICH information, the determining unit 903 determines whether the base station correctly receives an uplink data packet according to indication information included in the HARQ feedback information received by the receiving unit 901, and if it is determined that the base station does not correctly receive the uplink data packet, the sending unit 902 retransmits the uplink data packet to the base station until the determining unit 903 determines that the base station correctly receives 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, when the uplink scheduling configuration information includes uplink frequency carrier channel information, the determining unit 903 determines, according to the uplink frequency carrier channel information, an uplink frequency carrier channel used when the uplink data packet is sent, that is, determines, as a first target frequency carrier channel for sending the uplink data packet, the uplink frequency carrier channel indicated by the uplink frequency carrier channel information in the uplink scheduling configuration information.

The embodiment of the invention provides User Equipment (UE), when a first target frequency carrier channel of a TDD-LTE system is adjacent to an uplink frequency carrier channel in the FDD-LTE system, the UE receives downlink data including uplink scheduling configuration information and power control information transmitted by the base station through a first frequency carrier channel that is not adjacent to an uplink frequency carrier channel in the FDD-LTE system, and adjusts the transmission configuration information of itself according to the uplink scheduling configuration information and the power control information included in the downlink data, and further transmitting an uplink data packet to the base station through the first target frequency carrier channel according to the adjusted transmission configuration information, and then, and the UE receives HARQ feedback information sent by the base station through a first frequency carrier channel which is not adjacent to an uplink frequency carrier channel in the FDD-LTE system, and judges whether the base station correctly receives the uplink data packet or not according to the HARQ feedback information. Because the UE receives the downlink data sent by the base station through the first frequency carrier channel which is not adjacent to the uplink frequency carrier channel in the FDD-LTE system, the interference generated when the base station receives the uplink data packet sent by the UE through the second frequency carrier channel which is not adjacent to the downlink frequency carrier channel in the FDD-LTE system in the TDD-LTE system when the base station receives the uplink data packet sent by the UE through the uplink frequency carrier channel in the FDD-LTE system is avoided, and the correct transmission of the data is ensured.

As shown in fig. 11, which provides a functional diagram of a base station for the embodiment of the present invention, referring to fig. 11, the base station includes: transmission section 1101 and reception section 1102.

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

Specifically, the sending unit 1101 sends downlink data to the UE through a second target frequency carrier channel when the second target frequency carrier channel of the TDD-LTE system is adjacent to a downlink frequency carrier channel in the FDD-LTE system, and does not interfere with a base station in the FDD-LTE system that sends downlink data to the UE through the downlink frequency carrier channel, so that the sending unit 1101 sends downlink data including uplink scheduling configuration information and power controller information to the UE through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system, so that the UE adjusts its own transmission configuration information according to uplink scheduling configuration information and power control information sent by the base station, and further sends an uplink data packet to the base station according to the transmission configuration information.

When the transmitting unit 1101 transmits downlink data to the UE through the second target frequency carrier channel for the first time, the downlink data is control-related information.

In this case, the transmitting unit 1101 is specifically configured to transmit uplink scheduling configuration information and power control information to the UE through a second target frequency carrier channel.

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

Further, the transmitting unit 1101 is specifically configured to transmit the PDCCH information and the PCFICH information to the UE through the second target frequency carrier channel.

Specifically, when a second target frequency carrier channel of the TDD-LTE system is adjacent to a downlink frequency carrier channel of the FDD-LTE system, and when PDCCH information and PCFICH information are sent to the UE through the second target frequency carrier channel, interference will not be generated between the sending unit 1101 and a base station in the FDD-LTE system when downlink data is sent to the UE through the downlink frequency carrier channel, and then the sending unit 1101 sends the PDCCH information and the PCFICH information carrying uplink scheduling information and power control information to the UE through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system.

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

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

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

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

The embodiment of the invention provides a base station, if a second target frequency carrier channel of a TDD-LTE system is adjacent to a downlink frequency carrier channel in an FDD-LTE system, the base station sends downlink data comprising uplink scheduling configuration information and power control information to UE through the second target frequency carrier channel, so that the UE adjusts the transmission configuration information of the UE according to the downlink data comprising the uplink scheduling configuration information and the power control information sent by the base station, further sends an uplink data packet to the base station through a second frequency carrier channel which is not adjacent to the downlink frequency carrier channel in the FDD-LTE system according to the transmission configuration information, when the base station receives the uplink data packet sent by the UE, the base station sends HARQ feedback information to the UE through the second target frequency carrier channel, so that the UE receives the HARQ feedback information sent by the base station through the second frequency carrier channel which is not adjacent to the downlink frequency carrier channel in the FDD-LTE system, and judging whether the base station correctly receives the uplink data packet sent by the UE according to the received HARQ feedback information. Because the base station receives the uplink data packet sent by the UE through the second frequency carrier channel which is not adjacent to the downlink frequency carrier channel in the FDD-LTE system, the interference generated when the base station receives the uplink data packet sent by the UE through the second frequency carrier channel which is not adjacent to the downlink frequency carrier channel in the FDD-LTE system in the TDD-LTE system when the base station sends downlink data to the UE through the downlink frequency carrier channel in the FDD-LTE system is avoided, and the correct transmission of data is ensured.

As shown in fig. 12, which is a functional schematic diagram of a user equipment UE provided in an embodiment of the present invention, and is applied to a TDD-LTE system, referring to fig. 12, the UE includes: a receiving unit 1201, a transmitting unit 1202, and a determining 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.

Specifically, when the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel of the FDD-LTE system, because the base station sends downlink data to the UE through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system, the receiving unit 1201 receives the downlink data including the uplink scheduling configuration information and the 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.

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 a second target frequency carrier channel.

That is to say, after receiving the uplink scheduling configuration information, the receiving unit 1201 can determine, according to the uplink frequency carrier channel information, the uplink frequency carrier channel used when it sends the uplink data packet to the base station by knowing the uplink frequency carrier channel information.

Further, 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.

Specifically, when a second target frequency carrier channel of the TDD-LTE system is adjacent to a downlink frequency carrier channel of the FDD-LTE system, because the base station sends PDCCH information and PCFICH information carrying uplink scheduling configuration information and power control information to the UE through the second target frequency carrier channel adjacent to the downlink frequency carrier channel of the FDD-LTE system, the receiving unit 1201 receives the PDCCH information and PCFICH information carrying 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.

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.

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 the power control information received by the receiving unit 1201.

Specifically, when the second target frequency carrier channel of the TDD-LTE system is adjacent to the downlink frequency carrier channel of the FDD-LTE system, after the receiving unit 1201 receives PDCCH information and PCFICH information carrying uplink scheduling configuration information and power control information sent by the base station, analyzing the number of OFDM symbols occupied by PDCCH information carried in the PCFICH information, thereby determining the physical resource position of the PDCCH information according to the number of OFDM symbols occupied by the PDCCH information, and further, the uplink scheduling configuration information and power control information, including time-frequency resource information and transmission format information for the uplink, which are sent to the UE by the base station, carried in the PDCCH information are analyzed at the physical resource location, so that the processing module 12021, and adjusting the transmission configuration information of the base station according to the time-frequency resource information of the uplink appointed by the base station, the transmission format appointed by the base station and the power control information appointed by the base station.

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 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 according to the legal configuration information adjusted by the processing module 12021, so that the base station can correctly identify the uplink data packet, and the UE sends the uplink data packet by 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 second target frequency carrier channel.

Specifically, when a second target frequency carrier channel of the TDD-LTE system is adjacent to a downlink frequency carrier channel of the FDD-LTE system, according to time-frequency resource information of an uplink specified by the base station, a transmission format specified by the base station, and power control information specified by the base station, after the transmitting unit 1202 transmits an 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, since the base station transmits HARQ feedback information to the UE through the second target frequency carrier channel that is adjacent to the downlink frequency carrier channel of the FDD-LTE system, the receiving unit 1201 receives HARQ feedback information transmitted by the base station through the second target frequency carrier channel that is adjacent to the downlink frequency carrier channel of the FDD-LTE system.

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 of the TDD-LTE system is adjacent to the downlink frequency carrier channel of the FDD-LTE system, 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, after the sending unit 1202 sends the uplink data packet to the base station through the second frequency carrier channel which is not adjacent to the downlink frequency carrier channel of the FDD-LTE system, since the base station transmits PHICH information carrying HARQ feedback information to the UE through a second target frequency carrier channel adjacent to a downlink frequency carrier channel of the FDD-LTE system, the receiving unit 1201 receives PHICH information carrying HARQ feedback information sent by the base station through a second target frequency carrier channel adjacent to a downlink frequency carrier channel of the FDD-LTE system, and resolving 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 correctly receives the uplink data packet according to 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.

If 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 determined to be 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, it is determined that the base station does not correctly receive 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 does not correctly receive the uplink data packet.

Specifically, when the determining unit 1203 determines that the base station does not correctly receive the uplink data packet, the sending unit 1202 resends the uplink data packet to the base station through a second frequency carrier channel that is not adjacent to a downlink frequency carrier channel of the FDD-LTE system 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, which are received by the receiving unit 1201.

At this time, the receiving unit 1201 receives PHICH information retransmitted by the base station through a downlink frequency carrier channel of the FDD-LTE system and acquires HARQ feedback information carried in the PHICH information, the determining unit 1203 determines whether the base station correctly receives an uplink data packet according to indication information included in the HARQ feedback information received by the receiving unit 1201, and if it is determined that the base station does not correctly receive the uplink data packet, the transmitting unit 1202 retransmits 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 until the determining unit 1203 determines that the base station correctly receives the uplink data packet.

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

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

The embodiment of the invention provides User Equipment (UE), wherein if a second target frequency carrier channel of a TDD-LTE system is adjacent to a downlink frequency carrier channel in an FDD-LTE system, the UE receives downlink data which is sent by a base station and comprises uplink scheduling configuration information through the second target frequency carrier channel, adjusts the transmission configuration information of the UE according to the uplink scheduling configuration information and power control information which are contained in the downlink data, further sends an uplink data packet to the base station through a second frequency carrier channel which is not adjacent to the downlink frequency carrier channel in the FDD-LTE system according to the adjusted transmission configuration information, and then receives hybrid automatic repeat request (HARQ) feedback information sent by the base station through the second target frequency carrier channel and judges whether the base station correctly receives the uplink data packet according to the HARQ feedback information. Because the UE sends the uplink data packet to the base station through the second frequency carrier channel which is not adjacent to the downlink frequency carrier channel in the FDD-LTE system, at the moment, the base station receives the uplink data packet sent by the UE through the second frequency carrier channel which is not adjacent to the downlink frequency carrier channel in the FDD-LTE system, the interference generated when the base station sends downlink data to the UE through the downlink frequency carrier channel in the FDD-LTE system is avoided, and the correct transmission of the data is ensured.

An embodiment of the present invention provides a data transmission system, as shown in fig. 14, including: base station 1401, user equipment UE 1402. Wherein,

the base station 1401 is the base station described in the above embodiments.

The UE1402 is the UE described in the above embodiments.

The embodiment of the invention provides a method, a device and a system for data transmission, if a first target frequency carrier channel of a TDD-LTE system is adjacent to an uplink frequency carrier channel in an FDD-LTE system, a base station sends downlink data comprising uplink scheduling configuration information and power control information to UE through the first frequency carrier channel which is not adjacent to the uplink frequency carrier channel in the FDD-LTE system, so that the UE adjusts the transmission configuration information of the UE according to the downlink data comprising the uplink scheduling configuration information and the power control information sent by the base station, further sends an uplink data packet to the base station through the first target frequency carrier channel according to the transmission configuration information, and when the base station receives the uplink data packet sent by the UE through the first target frequency carrier channel, the base station sends feedback information to the UE through the first frequency carrier channel which is not adjacent to the uplink frequency carrier channel in the FDD-LTE system, and the UE judges whether the base station correctly receives the uplink data packet sent by the UE according to the received HARQ feedback information. Because the base station sends downlink data to the UE through the first frequency carrier channel which is not adjacent to the uplink frequency carrier channel in the FDD-LTE system, the interference generated when the base station receives the uplink data packet sent by the UE through the uplink frequency carrier channel in the FDD-LTE system is avoided, and the correct transmission of the data is ensured. Or, if a second target frequency carrier channel of the TDD-LTE system is adjacent to a downlink frequency carrier channel in the FDD-LTE system, the base station sends downlink data including uplink scheduling configuration information and power control information to the UE through the second target frequency carrier channel, so that the UE adjusts its own transmission configuration information according to the downlink data including the uplink scheduling configuration information and the power control information sent by the base station, and further sends an uplink data packet to the base station through a second frequency carrier channel that is not adjacent to the downlink frequency carrier channel in the FDD-LTE system according to the transmission configuration information, and when receiving the uplink data packet sent by the UE, the base station sends HARQ feedback information to the UE through the second target frequency carrier channel, so that the UE receives 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 judging whether the base station correctly receives the uplink data packet sent by the UE according to the received HARQ feedback information. Because the base station receives the uplink data packet sent by the UE through the second frequency carrier channel which is not adjacent to the downlink frequency carrier channel in the FDD-LTE system, the interference generated when the base station receives the uplink data packet sent by the UE through the second frequency carrier channel which is not adjacent to the downlink frequency carrier channel in the FDD-LTE system in the TDD-LTE system when the base station sends downlink data to the UE through the downlink frequency carrier channel in the FDD-LTE system is avoided, and the correct transmission of data is ensured.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A data transmission method is applied to a time division duplex-long term evolution (TDD-LTE) system and is characterized by comprising the following steps:

a base station sends downlink data to User Equipment (UE) through a first frequency carrier channel; the first frequency carrier channel is a frequency carrier channel which is not adjacent to an uplink frequency carrier channel of a frequency division duplex-long term evolution FDD-LTE system in the TDD-LTE system;

the base station receives an 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 an uplink frequency carrier channel of the FDD-LTE system;

and the base station sends hybrid automatic repeat request (HARQ) feedback information to the UE through the first frequency carrier channel.

2. The method of 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 a first frequency carrier channel includes:

and 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 transmits the downlink data to the UE through the first frequency carrier channel, the method further comprises:

the base station determines the first frequency carrier channel.

4. A method for data transmission is applied to a TDD-LTE system, and is characterized by comprising the following steps:

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 which is not adjacent to an uplink frequency carrier channel of a frequency division duplex-long term evolution FDD-LTE system in the TDD-LTE system;

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 an uplink frequency carrier channel of the FDD-LTE system;

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;

and if the UE determines that the base station does not correctly receive the uplink data packet, retransmitting the uplink data packet through the first target frequency carrier channel.

5. The method of claim 4,

the downlink data includes: uplink scheduling configuration information and power control information;

the receiving, by the UE, downlink data sent by a base station through a first frequency carrier channel includes:

the UE receives the uplink scheduling configuration information and the power control information sent by a base station through a first frequency carrier channel;

before the UE sends an uplink data packet to the base station through a 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 an uplink data packet to the base station through a first target frequency carrier channel according to the downlink data includes:

the UE adjusts the transmission configuration information of the UE according to the uplink scheduling configuration information and the power control information; and sending an uplink data packet to the base station through a first target frequency carrier channel according to the adjusted transmission configuration information.

6. A data transmission method is applied to a time division duplex-long term evolution (TDD-LTE) system and is characterized by comprising the following steps:

the base station sends downlink data to the user equipment UE through a second target frequency carrier channel; wherein the second target frequency carrier channel is a frequency carrier channel adjacent to a downlink frequency carrier channel of a frequency division duplex-long term evolution (FDD-LTE) system;

the base station receives an uplink data packet sent by the UE through a second frequency carrier channel; the second frequency carrier channel is a frequency carrier channel which is not adjacent to a downlink frequency carrier channel of the FDD-LTE system in the TDD-LTE system;

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

7. The method of claim 6, wherein the downlink data comprises: uplink scheduling configuration information and power control information;

the sending, by the base station, the downlink data to the UE through a second target frequency carrier channel includes:

and the base station sends uplink scheduling configuration information and power control information to the UE through a second target frequency carrier channel.

8. A method for data transmission is applied to a TDD-LTE system, and is characterized by comprising the following steps:

user Equipment (UE) receives 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 a downlink frequency carrier channel of a frequency division duplex-long term evolution (FDD-LTE) system;

the UE sends an uplink data packet to the base station through a second frequency carrier channel according to the downlink data; the second frequency carrier channel is a frequency carrier channel which is not adjacent to a downlink frequency carrier channel of the FDD-LTE system in the TDD-LTE system;

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

and if the UE determines that the base station does not correctly receive the uplink data packet, retransmitting the uplink data packet through the second frequency carrier channel.

9. The method of claim 8, wherein the downlink data comprises: uplink scheduling configuration information and power control information;

the receiving, by the UE, the downlink data sent by the base station through a 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 an uplink data packet to the base station through a 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 an uplink data packet to the base station through a second frequency carrier channel according to the downlink data includes:

the UE adjusts the transmission configuration information of the UE according to the uplink scheduling configuration information and the power control information; and sending 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, comprising:

a sending unit, configured to send downlink data to a user equipment UE through a first frequency carrier channel; the first frequency carrier channel is a frequency carrier channel which is not adjacent to an uplink frequency carrier channel of a frequency division duplex-long term evolution FDD-LTE system in the TDD-LTE system;

a receiving unit, configured to receive an 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 an uplink frequency carrier channel of the FDD-LTE system;

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 of claim 10,

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 for determining the first frequency carrier channel.

13. A User Equipment (UE) applied to a TDD-LTE system, comprising:

a receiving unit, configured to receive downlink data sent by a base station through a first frequency carrier channel; the first frequency carrier channel is a frequency carrier channel which is not adjacent to an uplink frequency carrier channel of a frequency division duplex-long term evolution FDD-LTE system in the TDD-LTE system;

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 a frequency carrier channel adjacent to an uplink frequency carrier channel of the FDD-LTE system;

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 first target frequency carrier channel when the determining unit determines that the base station does not correctly receive the uplink data packet.

14. The UE of claim 13,

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 transmission unit includes: the processing module and the 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 the power control information received by the receiving unit;

and the sending module is used for sending 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, comprising:

a sending unit, configured to send 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 a downlink frequency carrier channel of a frequency division duplex-long term evolution (FDD-LTE) system;

a receiving unit, configured to receive an uplink data packet sent by the UE through a second frequency carrier channel; the second frequency carrier channel is a frequency carrier channel which is not adjacent to a downlink frequency carrier channel of the FDD-LTE system in the TDD-LTE system;

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 of claim 15,

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 to a TDD-LTE system, comprising:

a receiving unit, configured to receive 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 a downlink frequency carrier channel of a frequency division duplex-long term evolution (FDD-LTE) system;

a sending unit, configured to send an uplink data packet through a second frequency carrier channel according to the downlink data received by the receiving unit; the second frequency carrier channel is a frequency carrier channel which is not adjacent to a downlink frequency carrier channel of the FDD-LTE system in the TDD-LTE system;

the receiving unit is further configured to receive, through the second target frequency carrier channel, the HARQ feedback information sent by the base station;

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 does not correctly receive the uplink data packet.

18. The UE of claim 17,

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 transmitting unit includes: the processing module and the sending module; wherein,

and the sending module is used for sending 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 system for data transmission, applied to a TDD-LTE system, comprising: a base station and User Equipment (UE); wherein,

the base station is the base station of any one of claims 10-12, 15-17;

the UE is the UE of claim 13 or 14 or 17 or 18.