CN106937328A - Data transmission method and device based on carrier aggregation - Google Patents

Abstract

The invention discloses a kind of data transmission method and device based on carrier aggregation, methods described includes：At least one carrier units are chosen in carrier units more than described two and transmits the same data；What is sent in the network lateral UE instructions at least one carrier units is same data；What is sent in the network lateral UE instructions at least one carrier units is same data.

Description

Data transmission method and device based on carrier aggregation

technical field

The present invention relates to carrier aggregation technology, in particular to a data transmission method and device based on carrier aggregation.

Background technique

In a Long Term Evolution (LTE, Long Term Evolution) system, a weak signal at a cell edge and co-channel interference have a negative impact on network performance, which is a common problem.

In order to improve the channel quality at the edge of the LTE cell and improve the reliability of user data transmission, various technical means have been proposed, such as Inter Cell Interference Coordination (ICIC, Coordinated Multiple Points Transmission/Reception) (CoMP, Coordinated Multiple Points Transmission/Reception). )Wait. ICIC avoids co-channel interference by using RB (Resource Block) resources in different frequency domain positions at the edge of the cell in the local area and neighboring cells; CoMP implements interference avoidance and signal enhancement through the coordination of multiple cells in the same frequency.

With the continuous development of LTE technical standards, carrier aggregation (CA, Carrier Aggregation) technology is becoming more and more mature. The frequency band used by CA is a frequency bandwidth conforming to relevant technical specifications of Long Term Evolution Advanced (LTE-A, Long Term Evolution Advanced) formed by aggregation of two or more LTE carrier units, such as 10MHz, 20MHz or even 100MHz. The multiple carriers of carrier aggregation CA can be close to each other in frequency or spaced apart. Carrier aggregation is a concept at the user equipment (UE, User Equipment) level, that is, a wide carrier formed by aggregation of multiple LTE carrier components (CC, Component Carrier) is provided to a certain UE. Each CA UE has only one primary cell (PCell, Primary Cell), and different numbers of secondary cells (SCell, Secondary Cell) are configured according to the UE's aggregation capability and service requirements, and there can only be one secondary cell on a secondary carrier SCell.

If cross-carrier scheduling is not supported, the downlink resource control information (DCI, Downlink Control Information) carried by the physical layer downlink control channel (PDCCH, Physical Downlink Control Channel) on each downlink carrier component CC corresponds to the physical downlink of the same carrier component CC Shared channel (PDSCH, Physical Downlink Shared Channel) resource. If cross-carrier scheduling is supported, the DCI carried by the PDCCH is allowed to be transmitted on one CC, while the corresponding Physical Downlink Shared Channel (PDSCH, Physical Downlink Shared Channel) resources are transmitted on another CC.

Whether cross-carrier scheduling is enabled for each component carrier CC of the UE and which other component carrier CC is scheduled on can be independently configured through RRC signaling. If cross-carrier scheduling is supported, a carrier indicator field (CIF, Carrier Indicator Field) field may be inserted at the beginning of the downlink resource control information DCI to specify the carrier component CC corresponding to the downlink resource control information DCI. Whether there is a CIF field is also indicated through signaling. Carrier aggregation technology, using multiple carriers to serve the same UE, has a natural advantage in improving the throughput of base stations and UE devices. There are differences in the coverage of multiple CA carrier units at the cell edge, but currently there is no technical solution for using this difference to solve the problem of weak coverage and co-channel interference at the cell edge for reference.

Contents of the invention

In order to solve the above technical problems, embodiments of the present invention provide a data transmission method and device based on carrier aggregation.

A data transmission method based on carrier aggregation, the method comprising:

When the network side decides to use two or more carrier components to send the same data to the user equipment UE supporting carrier aggregation CA, select at least one carrier component from the two or more carrier components to transmit the same data;

The network side indicates to the UE that the same data is sent in the at least one component carrier.

As an implementation manner, the network side indicates to the UE that the same data is sent in the at least one carrier component, including:

The network side indicates to the UE that the same data is sent in the at least one carrier component through downlink control information DCI;

Or, the network side indicates to the UE through downlink control information DCI that the same data is sent in the at least one carrier component, and the same data is data of a certain carrier component in the at least one carrier component .

As an implementation manner, the network side indicates to the UE that the same data is sent in the at least one carrier component, including:

The network side indicates to the UE that the same data is sent in the at least one carrier component through the same specific field in the downlink control information DCI in each of the at least one carrier component;

Or, the network side indicates to the UE that the same data is sent in the at least one carrier component through the same specific field in the downlink control information DCI in each of the at least one carrier component, and, The same data is data of a certain carrier component in the at least one carrier component.

As an implementation manner, the specific field includes a carrier indicator field (CIF) field.

As an implementation manner, the network side indicates to the UE that the same data is sent in the at least one carrier component, including:

The network side selects one carrier component in the at least one carrier component to send multiple DCIs to indicate that the same data is sent in the at least one carrier component;

Alternatively, the network side selects a carrier component in the at least one carrier component to send multiple DCIs to indicate that the same data is sent in the at least one carrier component, and the same data is the at least Data of a certain carrier unit in a carrier unit.

As an implementation manner, the network side indicates to the UE that the same data is sent in the at least one carrier component, including:

When the at least one carrier component includes more than two carrier components, the network side sends multiple DCIs on the carrier component to which the same data belongs to indicate the DCI sent by other carrier components in the at least one carrier component is the same data.

As an implementation manner, the network side indicates to the UE that the same data is sent in the at least one carrier component, including:

The network side indicates to the UE that the same data is sent in the at least one carrier component through a specific media access control control unit MAC CE;

Or, the network side indicates to the UE through a specific medium access control control unit MAC CE that the same data is sent in the at least one carrier component, and the same data is sent in the at least one carrier component The data of a certain carrier unit.

As an implementation manner, the network side indicates to the UE that the same data is sent in the at least one carrier component, including:

The network side indicates to the UE that the same data is sent in the at least one carrier component through a specific configuration signaling message;

Or, the network side indicates to the UE through a specific configuration signaling message that the same data is sent in the at least one carrier component, and the same data is a certain carrier component in the at least one carrier component The data.

A data transmission method based on carrier aggregation, the method comprising:

The user equipment UE receives the indication information sent by the network side;

The UE determines, according to the indication message, that data transmitted in multiple carrier components in the aggregated carrier is the same.

As an implementation, the method also includes:

The UE determines, according to the indication message, that the same data is data of a certain carrier component among the multiple carrier components.

As an implementation manner, the UE demodulates the data of the plurality of component carriers, and when the demodulated data of one component carrier is correct, no longer demodulates the data of other component carriers in the plurality of component carriers .

As an implementation, after the UE demodulates the data of the plurality of carrier components, it only selects one of the plurality of carrier components with a correct demodulation result for use, and feeds back to the network side that the received data is correct ; Feedback a data reception error to the network side when there is no data with correct demodulation results in the plurality of carrier components.

A data transmission device based on carrier aggregation, the device includes: a decision-making unit, a selection unit, a transmission unit, and an indication unit, wherein:

A decision-making unit, configured to decide to use more than two carrier components to send the same data for UEs supporting CA;

a selection unit, configured to select at least one carrier component from the two or more carrier components;

a transmission unit for transmitting said same data using said at least one carrier unit;

An indicating unit, configured to indicate to the UE that the same data is sent in the at least one carrier component.

As an implementation manner, the indicating unit is further configured to indicate to the UE that the same data is sent in the at least one carrier component through downlink control information DCI;

Alternatively, the downlink control information DCI is used to indicate to the UE that the same data is sent in the at least one component carrier, and that the same data is data of a certain component carrier in the at least one component carrier.

As an implementation manner, the indicating unit is further configured to indicate to the UE, through the same specific field in the downlink control information DCI in each of the at least one carrier component, to indicate to the UE that the at least one carrier component sends is the same data;

Or, use the same specific field in the downlink control information DCI in each of the at least one carrier component to indicate to the UE that the same data is sent in the at least one carrier component, and the same The data is data of a certain carrier component in the at least one carrier component.

As an implementation manner, the specific field includes a carrier indicator field (CIF) field.

As an implementation manner, the indicating unit is further configured to select one carrier unit in the at least one carrier unit to send multiple DCIs, so as to indicate that the same data is sent in the at least one carrier unit;

Or, it is used to select a carrier component in the at least one carrier component to send multiple DCIs, so as to indicate that the same data is sent in the at least one carrier component, and the same data is the at least one carrier Data of a certain carrier unit in the unit.

As an implementation manner, the indicating unit is further configured to send multiple DCIs on the carrier unit to which the same data belongs when the at least one carrier unit includes more than two carrier units, so as to indicate the at least All other carrier components in one carrier component send the same data.

As an implementation manner, the indicating unit is further configured to indicate to the UE that the same data is sent in the at least one carrier component through a specific medium access control control unit MAC CE;

Or, the specific medium access control control unit MAC CE indicates to the UE that the same data is sent in the at least one carrier component, and the same data is a certain carrier in the at least one carrier component unit's data.

As an implementation manner, the indicating unit is further configured to indicate to the UE through a specific configuration signaling message that the same data is sent in the at least one carrier component;

Or, indicate to the UE through a specific configuration signaling message that the same data is sent in the at least one component carrier, and that the same data is data of a certain component carrier in the at least one component carrier.

A data transmission device based on carrier aggregation, the device comprising: a receiving unit and a determining unit, wherein:

a receiving unit, configured to receive an indication message sent by the network side;

A determining unit, configured to determine, according to the indication message, that data transmitted in multiple carrier components in the aggregated carrier is the same.

As an implementation manner, the determining unit is further configured to determine whether it is indicated that the same data is data of a certain carrier component according to the indication message.

As an implementation, the device also includes:

The demodulation unit is configured to demodulate the data of the multiple carrier components, and when the demodulated data of one carrier component is correct, no longer demodulate the data of other carrier components in the multiple carrier components.

As an implementation, the device also includes:

Selecting a feedback unit for use after the demodulation unit demodulates the data of the multiple carrier components, and only selects one of the multiple carrier components with a correct demodulation result for use, and feeds back to the network side The data is received correctly; when there is no data with a correct demodulation result among the plurality of carrier components, a data reception error is fed back to the network side.

In the technical solution of the embodiment of the present invention, when the network side decides to use two or more carrier components to send the same data for the UE, at least one carrier component is selected from the two or more carrier components to send the same data, and it needs to pass The indication message indicates to the UE that at least one carrier component sends the same data, and the same data is data of a certain carrier component in the at least one carrier component. In this way, after receiving the indication message, the UE can determine that the same data is transmitted in multiple carrier components in the aggregated carrier, and when the demodulated data of one carrier component is correct, the multiple carriers will not be demodulated. Data for other carrier units in the unit. By adopting the technical solution of the present invention, the UE can obtain better transmission performance than a CA single carrier unit, and can be used in application scenarios such as avoiding co-channel interference and improving cell edge performance.

Description of drawings

FIG. 1 is a schematic flowchart of a carrier aggregation-based data transmission method according to Embodiment 1 of the present invention;

FIG. 2 is a schematic flowchart of a carrier aggregation-based data transmission method according to Embodiment 2 of the present invention;

3 is a schematic diagram of the composition and structure of a data transmission device based on carrier aggregation according to Embodiment 3 of the present invention;

FIG. 4 is a schematic diagram of the composition and structure of a data transmission device based on carrier aggregation according to Embodiment 3 of the present invention.

detailed description

In order to understand the characteristics and technical contents of the embodiments of the present invention in more detail, the implementation of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. The attached drawings are only for reference and description, and are not intended to limit the embodiments of the present invention.

In order to overcome the problem of poor reliability of downlink data transmission caused by weak coverage at the edge of an LTE cell and co-channel interference existing in the prior art, an embodiment of the present invention provides a data transmission method based on carrier aggregation, including: the base station decides that the CA should use Multiple carrier units transmit the same data, and what is transmitted is the data of a certain carrier unit in CA. The base station instructs the UE that the same data is sent from multiple carrier units in CA, and it can be clearly indicated that it is a specific carrier unit. The data. According to the instruction of the base station, the UE judges that the same data is received in the CA multiple carrier components, and judges whether the data of which carrier component is specified. The UE demodulates the data of multiple carrier components, selects only one data with a correct demodulation result for use, and feeds back to the base station that the data is received correctly. If there is no data with a correct demodulation result, a data reception error is fed back to the base station.

The essence of the technical solution of the embodiment of the present invention is further clarified through specific examples below.

FIG. 1 is a schematic flowchart of a data transmission method based on carrier aggregation according to Embodiment 1 of the present invention. As shown in FIG. 1 , the data transmission method based on carrier aggregation in this example includes the following steps:

In step 101, the network side decides to use more than two carrier components to send the same data for the UE supporting CA.

In the embodiment of the present invention, the network side may be a control network element on the network side, such as a base station, a base station controller, a Mobility Management Entity (MME, Mobility Management Entity), and the like. In the embodiment of the present invention, a base station is taken as an example for description, which is not intended to limit the protection scope of the present invention.

When the base station decides to use multiple carrier units to send the same data for the UE, it needs to select some channels with better channel quality in the aggregated carriers of the UE for data transmission, and not all aggregated carriers are selected for data transmission. At this time, the base station The data sent by the selected multiple carriers is the data on a certain carrier, and these data are all the same data.

Step 102, the network side selects at least one component carrier from the two or more component carriers to send the same data.

In the embodiment of the present invention, the base station selects a carrier component with better channel quality among the aggregated carrier components determined for the UE based on the measurement result of the UE on the carrier component to transmit data. After the carrier component for transmitting data is determined for the UE, the relevant information needs to be notified to the UE.

Step 103, the network side indicates to the UE that the same data is sent in the at least one component carrier.

As an implementation manner, in the embodiment of the present invention, the network side indicates to the UE that the same data is sent in the at least one carrier component, including:

The base station indicates to the UE that the same data is sent in the at least one carrier component through downlink control information (DCI, Downlink Control Information); or, in addition to indicating that the same data is sent in the at least one carrier component, It also indicates that the same data is data of a certain carrier component in the at least one carrier component.

As an implementation manner, in the embodiment of the present invention, the network side indicates to the UE that the same data is sent in the at least one carrier component, including:

The base station indicates to the UE that the same data is sent in the at least one carrier component through the same specific field in the DCI in each of the at least one carrier component; or, in addition to indicating the at least one carrier component In addition to sending the same data, it also indicates that the same data is data of a certain carrier component in the at least one carrier component. The specific field includes a Carrier Indicator Field (CIF, Carrier Indicator Field) field.

As an implementation manner, in the embodiment of the present invention, the network side indicates to the UE that the same data is sent in the at least one carrier component, including:

The base station selects a carrier component in the at least one carrier component to send multiple DCIs to indicate that the same data is sent in the at least one carrier component; or, in addition to indicating that the same data is sent in the at least one carrier component In addition to the data, it also indicates that the same data is data of a certain carrier component in the at least one carrier component.

As an implementation manner, in the embodiment of the present invention, the network side indicates to the UE that the same data is sent in the at least one carrier component, including:

When the at least one carrier unit is more than two, the base station sends multiple DCIs on the carrier unit to which the same data belongs, to indicate that other carrier units in the at least one carrier unit send the same data. data.

As an implementation manner, in the embodiment of the present invention, the network side indicates to the UE that the same data is sent in the at least one carrier component, including:

The base station indicates to the UE that the same data is sent in the at least one carrier component through a specific medium access control control unit MAC CE; or, in addition to indicating that the same data is sent in the at least one carrier component , also indicating that the same data is data of a certain carrier component in the at least one carrier component.

As an implementation manner, in the embodiment of the present invention, the network side indicates to the UE that the same data is sent in the at least one carrier component, including:

The base station indicates to the UE that the same data is sent in the at least one carrier component through a specific configuration signaling message; or, in addition to indicating that the same data is sent in the at least one carrier component, it also indicates the same The data is data of a certain carrier component in the at least one carrier component.

In the embodiment of the present invention, the base station may also use other methods to indicate to the UE that the same data is sent from multiple carrier components, and which specific carrier component is the data.

FIG. 2 is a schematic flowchart of a data transmission method based on carrier aggregation according to Embodiment 2 of the present invention. As shown in FIG. 2 , the data transmission method based on carrier aggregation in this example includes the following steps:

In step 201, the UE receives an indication message sent by the network side.

In the embodiment of the present invention, the network side may be a control network element on the network side, such as a base station, a base station controller, a Mobility Management Entity (MME, Mobility Management Entity), and the like. In the embodiment of the present invention, a base station is taken as an example for description, which is not intended to limit the protection scope of the present invention.

In the embodiment of the present invention, the base station sends the indication message to the UE, which may be specifically implemented in the following manner.

The base station may use the DCI to indicate to the UE that the same data is sent from multiple carrier components, and which specific carrier component is the data.

When the base station uses a specific field in the DCI, such as a carrier indicator (CIF, Carrier Indicator Field) to indicate, each carrier component that sends the same data has a DCI that is sent to the same UE, and the DCI carries the same CIF field. Indicates which specific carrier component data, and indicates the same data.

When the base station uses the same carrier unit to send multiple DCIs to indicate, it can send multiple DCIs on the carrier unit to which the data belongs. The DCI of the carrier unit to which the data belongs is indicated by a special value in a field. Other carrier units It is also the same data of this carrier unit that is transmitted.

The base station can use a specific MAC CE to indicate to the UE that the same data is sent from multiple carrier components, and which specific carrier component is the data. Which carrier component's data is identified in the MAC CE.

The base station may indicate to the UE through a specific configuration signaling message that the same data is sent from multiple carrier components, and which specific carrier component is the data.

The base station may also use other methods to indicate to the UE that the same data is sent from multiple carrier components, and which specific carrier component is the data.

The base station may only indicate to the UE that the same data is delivered in multiple carrier components, and does not need to indicate which specific carrier component is the data.

In step 202, the UE determines, according to the indication message, that data transmitted in multiple carrier components in the aggregated carrier is the same.

According to the DCI, or MAC CE, or configuration signaling message, or other information issued by the base station, the UE determines that the same data is transmitted in multiple carrier components, and also determines whether the data of a specific carrier component is indicated .

When the UE demodulates data of multiple carrier components, if there is data with a correct demodulation result, the data of other carrier components transmitting the same data may not be demodulated again.

After the UE demodulates the data of multiple carrier components, it selects only one data with a correct demodulation result for use, and feeds back to the base station that the data is received correctly. If there is no data with a correct demodulation result, a data receiving error is fed back to the base station.

According to the technical solution of the embodiment of the present invention, when the network side decides to use two or more carrier components to send the same data for the UE, at least one carrier component is selected from the two or more carrier components to send the same data, and it needs to pass The indication message indicates to the UE that at least one carrier component sends the same data, and the same data is data of a certain carrier component in the at least one carrier component. In this way, after receiving the indication message, the UE can determine that the same data is transmitted in multiple carrier components in the aggregated carrier, and when the demodulated data of one carrier component is correct, the multiple carriers will not be demodulated. Data for other carrier units in the unit. By adopting the technical solution of the present invention, the UE can obtain better transmission performance than a CA single carrier unit, and can be used in application scenarios such as avoiding co-channel interference and improving cell edge performance.

FIG. 3 is a schematic diagram of the composition and structure of a data transmission device based on carrier aggregation according to Embodiment 3 of the present invention. As shown in FIG. 3 , the data transmission device based on carrier aggregation in this example includes a decision unit 30, a selection unit 31, a transmission unit 32 and indicating unit 33, wherein:

A decision-making unit 30, configured to decide to use more than two carrier components to send the same data for the user equipment UE;

A selection unit 31, configured to select at least one carrier component from the two or more carrier components;

a transmission unit 32, configured to transmit the same data by using the at least one carrier component;

The indicating unit 33 is configured to indicate to the UE that the same data is sent in the at least one carrier component.

The indicating unit 33 is further configured to indicate to the UE that the same data is sent in the at least one carrier component through downlink control information DCI;

Alternatively, the downlink control information DCI is used to indicate to the UE that the same data is sent in the at least one component carrier, and that the same data is data of a certain component carrier in the at least one component carrier.

As an implementation manner, the indicating unit 33 is further configured to indicate to the UE the information transmitted in the at least one carrier component through the same specific field in the downlink control information DCI in each of the at least one carrier component. is the same data;

Or, use the same specific field in the downlink control information DCI in each of the at least one carrier component to indicate to the UE that the same data is sent in the at least one carrier component, and the same The data is data of a certain carrier component in the at least one carrier component. Here, the specific field includes a carrier indicator field CIF field.

As an implementation manner, the instructing unit 33 is further configured to select one carrier component in the at least one carrier component to send multiple DCIs, so as to indicate that the same data is sent in the at least one carrier component;

Or, it is used to select a carrier component in the at least one carrier component to send multiple DCIs, so as to indicate that the same data is sent in the at least one carrier component, and the same data is the at least one carrier Data of a certain carrier unit in the unit.

As an implementation, the indicating unit 33 is configured to send multiple DCIs on the carrier unit to which the same data belongs, so as to indicate that other carrier units in the at least one carrier unit send the same data .

As an implementation manner, the indicating unit 33 is further configured to indicate to the UE that the same data is sent in the at least one carrier component through a specific medium access control control unit MAC CE;

Or, the specific medium access control control unit MAC CE indicates to the UE that the same data is sent in the at least one carrier component, and the same data is a certain carrier in the at least one carrier component unit data.

As an implementation manner, the indicating unit 33 is further configured to indicate to the UE that the same data is sent in the at least one carrier component through a specific configuration signaling message;

Or, indicate to the UE through a specific configuration signaling message that the same data is sent in the at least one component carrier, and that the same data is data of a certain component carrier in the at least one component carrier.

In the technical solution of the embodiment of the present invention, when the network side decides to use two or more carrier components to send the same data for the UE, at least one carrier component is selected from the two or more carrier components to send the same data, and it needs to pass The indication message indicates to the UE that at least one carrier component sends the same data, and the same data is data of a certain carrier component in the at least one carrier component. In this way, after receiving the indication message, the UE can determine that the same data is transmitted in multiple carrier components in the aggregated carrier, and when the demodulated data of one carrier component is correct, the multiple carriers will not be demodulated. Data for other carrier units in the unit. By adopting the technical solution of the present invention, the UE can obtain better transmission performance than a CA single carrier unit, and can be used in application scenarios such as avoiding co-channel interference and improving cell edge performance.

Those skilled in the art should understand that the functions implemented by the above units can be understood with reference to the relevant descriptions of the data transmission methods based on carrier aggregation in the foregoing embodiments. The functions of the above units can be realized by programs running on the processing modules, or by specific logic circuits. For example, the above-mentioned decision-making unit 30 and selection unit 31 can be realized by FPGA, microprocessor and DSP, and the transmission unit 32 and indicating unit can be realized by an antenna system, etc.

FIG. 4 is a schematic diagram of the composition and structure of a data transmission device based on carrier aggregation according to Embodiment 3 of the present invention. As shown in FIG. 4 , the data transmission device based on carrier aggregation in this example includes: a receiving unit 40 and a determining unit 41, wherein:

A receiving unit 40, configured to receive an indication message sent by the network side;

The determining unit 41 is configured to determine, according to the indication message, that the same data is transmitted in multiple carrier components in the aggregated carrier.

In the embodiment of the present invention, the network side may be a control network element on the network side, such as a base station, a base station controller, a Mobility Management Entity (MME, Mobility Management Entity), and the like. In the embodiment of the present invention, a base station is taken as an example for description, which is not intended to limit the protection scope of the present invention.

In the embodiment of the present invention, the base station sends the indication message to the UE, which may be specifically implemented in the following manner.

The base station may use the DCI to indicate to the UE that the same data is sent from multiple carrier components, and which specific carrier component is the data.

When the base station uses a specific field in the DCI, such as a carrier indicator (CIF, Carrier Indicator Field) to indicate, each carrier component that sends the same data has a DCI that is sent to the same UE, and the DCI carries the same CIF field. Indicates which specific carrier component data, and indicates the same data.

When the base station uses the same carrier unit to send multiple DCIs to indicate, it can send multiple DCIs on the carrier unit to which the data belongs. The DCI of the carrier unit to which the data belongs is indicated by a special value in a field. Other carrier units It is also the same data of this carrier unit that is transmitted.

The base station can use a specific MAC CE to indicate to the UE that the same data is sent from multiple carrier components, and which specific carrier component is the data. The data of which carrier component is identified in the MAC CE.

The base station may indicate to the UE through a specific configuration signaling message that the same data is sent from multiple carrier components, and which specific carrier component is the data.

The base station may also use other methods to indicate to the UE that the same data is sent from multiple carrier components, and which specific carrier component is the data.

The base station may only indicate to the UE that the same data is delivered in multiple carrier components, and does not need to indicate which specific carrier component is the data.

In the embodiment of the present invention, the determining unit 41 is further configured to determine whether it indicates that the same data is data of a certain carrier component according to the indication message.

On the basis of the data transmission device based on carrier aggregation shown in Figure 4, the data transmission device based on carrier aggregation in this example further includes:

A demodulation unit (not shown in FIG. 4 ), configured to demodulate the data of the multiple carrier components, and when the demodulated data of a carrier component is correct, no longer demodulate the data in the multiple carrier components Data of other carrier units.

On the basis of the data transmission device based on carrier aggregation shown in Figure 4, the data transmission device based on carrier aggregation in this example further includes:

Selecting a feedback unit (not shown in FIG. 4 ), for after the demodulation unit demodulates the data of the plurality of carrier units, only selects the data with correct demodulation result of one of the plurality of carrier units for use , and feed back to the network side that data reception is correct; when there is no data with correct demodulation results in the plurality of carrier components, feed back data reception errors to the network side.

Those skilled in the art should understand that the functions implemented by the above units can be understood with reference to the relevant descriptions of the data transmission methods based on carrier aggregation in the foregoing embodiments. The functions of the above units can be realized by programs running on the processing modules, or by specific logic circuits. For example, the determination unit 41 and the like can be realized by FPGA, microprocessor and DSP, and the receiving unit 40 and the like can be realized by an antenna system, etc.

Using the technical solution of the embodiment of the present invention, compared with the prior art, multiple carrier units of CA transmit the same data, and the UE receives data from multiple carrier units, and after demodulation, selects an optimal the result of. By adopting the present invention, the UE can obtain transmission performance better than that of a CA single carrier unit, and can be used in scenarios such as avoiding co-frequency interference and improving cell edge performance.

The technical solutions described in the embodiments of the present invention may be combined arbitrarily if there is no conflict.

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

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

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

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention.

Claims (24)

1. a kind of data transmission method based on carrier aggregation, it is characterised in that methods described includes：

Network side decision-making is the user equipment (UE) for supporting carrier aggregation CA using more than two carrier units At least one carrier units are chosen when sending same data, in the carrier units more than described two to transmit The same data；

What is sent in the network lateral UE instructions at least one carrier units is same data.

2. the data transmission method based on carrier aggregation according to claim 1, it is characterised in that institute State that the lateral UE of network indicates to send at least one carrier units is same data, including：

The network side indicates at least one carrier units by Downlink Control Information DCI to the UE Middle transmission is same data；

Or, the network side indicates described at least one to carry by Downlink Control Information DCI to the UE What is sent in ripple unit is same data, and, during same data are at least one carrier units Certain carrier units data.

3. the data transmission method based on carrier aggregation according to claim 2, it is characterised in that institute State that the lateral UE of network indicates to send at least one carrier units is same data, including：

The network side is believed by the descending control in each carrier units at least one carrier units Identical specific fields in breath DCI are same to what is sent in UE instruction at least one carrier units The data of sample；

Or, the network side is by descending in each carrier units at least one carrier units Identical specific fields in control information DCI indicate to be sent at least one carrier units to the UE Be same data, and, the same data are certain loads at least one carrier units The data of ripple unit.

4. the data transmission method based on carrier aggregation according to claim 3, it is characterised in that institute Stating specific fields includes carrier wave instructions field CIF fields.

5. the data transmission method based on carrier aggregation according to claim 1, it is characterised in that institute State that the lateral UE of network indicates to send at least one carrier units is same data, including：

The network side chooses a carrier units at least one carrier units and sends multiple DCI, It is same data with indicate to send at least one carrier units；

Or, the network side chooses a carrier units at least one carrier units and sends multiple DCI, is same data with indicate to send at least one carrier units, and, it is described same Data be certain carrier units at least one carrier units data.

6. the data transmission method based on carrier aggregation according to claim 1, it is characterised in that institute State that the lateral UE of network indicates to send at least one carrier units is same data, including：

When at least one carrier units include more than two carrier units, the network side is described same Multiple DCI is sent on carrier units belonging to the data of sample, with indicating at least one carrier units What other carrier units sent is the same data.

7. the data transmission method based on carrier aggregation according to claim 1, it is characterised in that institute State that the lateral UE of network indicates to send at least one carrier units is same data, including：

The network side is indicated by the control unit MAC CE of specific medium education to the UE What is sent at least one carrier units is same data；

Or, the network side is by the control unit MAC CE of specific medium education to described What is sent in UE instructions at least one carrier units is same data, and, same data are institutes State the data of certain carrier units at least one carrier units.

8. the data transmission method based on carrier aggregation according to claim 1, it is characterised in that institute State that the lateral UE of network indicates to send at least one carrier units is same data, including：

The network side indicates at least one carrier wave list by specific configuration signal message to the UE What is sent in unit is same data；

Or, the network side indicates described at least one by specific configuration signal message to the UE What is sent in carrier units is same data, and, same data are at least one carrier units In certain carrier units data.

9. a kind of data transmission method based on carrier aggregation, it is characterised in that methods described includes：

User equipment (UE) receives the configured information that network side sends；

The UE determines the data transmitted in the multiple carrier units in polymerization carrier wave according to the instruction message It is identical.

10. the data transmission method based on carrier aggregation according to claim 9, it is characterised in that Methods described also includes：

During the UE determines that the same data are the multiple carrier units according to the instruction message The data of certain carrier units.

11. data transmission method based on carrier aggregation according to claim 9 or 10, its feature exists In the UE is demodulated to the data of the multiple carrier units, when demodulating carrier units When data are correct, not in the multiple carrier units of re-demodulation other carrier units data.

12. data transmission method based on carrier aggregation according to claim 9 or 10, its feature exists In after the UE demodulates the data of the multiple carrier units, in only choosing the multiple carrier units One correct data of demodulation result is used, and receives correct to the network side feedback data；It is the multiple In carrier units during data correct without demodulation result, mistake is received to the network side feedback data.

13. a kind of data transmission devices based on carrier aggregation, it is characterised in that described device includes：Certainly Plan unit, select unit, transmission unit and indicating member, wherein：

Decision package, sends same for decision-making using the UE that more than two carrier units are support CA Data；

Select unit, for choosing at least one carrier units in the carrier units more than described two；

Transmission unit, for transmitting the same data using at least one carrier units；

Indicating member, for being same to what is sent in UE instruction at least one carrier units Data.

14. data transmission devices based on carrier aggregation according to claim 13, it is characterised in that The indicating member, is additionally operable to indicate at least one load to the UE by Downlink Control Information DCI What is sent in ripple unit is same data；

Or, indicate to be sent out at least one carrier units to the UE by Downlink Control Information DCI What is sent is same data, and, same data are certain carrier waves at least one carrier units The data of unit.

15. data transmission devices based on carrier aggregation according to claim 14, it is characterised in that The indicating member, is additionally operable to by descending in each carrier units at least one carrier units Identical specific fields in control information DCI indicate to be sent at least one carrier units to the UE Be same data；

Or, by the Downlink Control Information in each carrier units at least one carrier units Identical specific fields in DCI are same to what is sent in UE instruction at least one carrier units Data, and, the same data are certain carrier units at least one carrier units Data.

16. data transmission devices based on carrier aggregation according to claim 15, it is characterised in that The specific fields include carrier wave instructions field CIF fields.

17. data transmission devices based on carrier aggregation according to claim 13, it is characterised in that The indicating member, is additionally operable to choose a carrier units transmission multiple at least one carrier units DCI, is same data with indicate to send at least one carrier units；

Or, multiple DCI is sent for choosing a carrier units at least one carrier units, It is same data with indicate to send at least one carrier units, and, the same data It is the data of certain carrier units at least one carrier units.

18. data transmission methods based on carrier aggregation according to claim 13, it is characterised in that The indicating member, when being additionally operable at least one carrier units including more than two carrier units, Multiple DCI is sent on carrier units belonging to the same data, to indicate at least one carrier wave list What other carrier units in unit sent is all the same data.

19. data transmission devices based on carrier aggregation according to claim 13, it is characterised in that The indicating member, is additionally operable to the control unit MAC CE by specific medium education to described What is sent in UE instructions at least one carrier units is the same data；

Or, indicated to the UE by the control unit MAC CE of specific medium education described What is sent at least one carrier units is same data, and, same data are described at least one The data of certain carrier units in carrier units.

20. data transmission devices based on carrier aggregation according to claim 13, it is characterised in that The indicating member, is additionally operable to indicate described at least one to the UE by specific configuration signal message What is sent in carrier units is same data；

Or, by specific configuration signal message in UE instruction at least one carrier units What is sent is same data, and, same data are certain loads at least one carrier units The data of ripple unit.

21. a kind of data transmission devices based on carrier aggregation, it is characterised in that described device includes：Connect Unit and determining unit are received, wherein：

Receiving unit, the instruction message for receiving network side transmission；

Determining unit, for being determined to be transmitted in the multiple carrier units in polymerization carrier wave according to the instruction message Data it is identical.

22. data transmission devices based on carrier aggregation according to claim 21, it is characterised in that The determining unit, is additionally operable to judge that whether indicating the same data is according to the instruction message The data of certain carrier units.

23. data transmission device based on carrier aggregation according to claim 21 or 22, its feature It is that described device also includes：

Demodulating unit, is demodulated for the data to the multiple carrier units, when demodulating a carrier wave When the data of unit are correct, not in the multiple carrier units of re-demodulation other carrier units data.

24. data transmission devices based on carrier aggregation according to claim 23, it is characterised in that Described device also includes：

Feedback unit is chosen, for after the data that the demodulating unit demodulates the multiple carrier units, only The correct data of demodulation result chosen in the multiple carrier units are used, and anti-to the network side Feedback data receiver is correct；In the multiple carrier units during data correct without demodulation result, to the network Side feedback data receives mistake.