CN103166745B - A kind of carrier aggregation system feeds back method and the device of response instruction - Google Patents

Abstract

The invention discloses a method and device for feeding back response instructions in a carrier aggregation system, comprising: receiving data carried by the current subframe; and receiving response instructions capable of carrying the data respectively included in a plurality of carriers that have undergone base station offset processing Among the subframes, a subframe whose time interval from the current subframe satisfies the set requirement is determined; and the determined subframe bears a response instruction for the data feedback. According to this technical solution, the response command for the received data feedback can be carried on multiple carriers that have been processed by the base station offset. Compared with the prior art, the timeliness of the response command feedback is improved, thereby reducing the data transmission delay. Improve data transfer quality.

Description

A Method and Device for Feedback Response Command in Carrier Aggregation System

technical field

The present invention relates to the field of communication technology, in particular to a method and device for feeding back response instructions in a carrier aggregation system.

Background technique

The subsequent enhanced version of 3GPP (3rd Generation Partnership Project) LTE (Long Term Evolution, long-term evolution) is called LTE-A (LTE-Advanced, enhanced LTE), and many new technologies have been introduced in LTE-A , carrier aggregation (carrier aggregation) technology is also introduced as a key technology supporting higher bandwidth transmission.

The basic principle of carrier aggregation is to meet higher bandwidth requirements by aggregating two or more basic carriers together. In R10 (Release 10, version 10), TDD (Time Division Duplexing, Time Division Duplex) carrier aggregation is mainly used for Intra-band (in-band) carrier aggregation, and the current carrier set does not support different subcarrier configurations. TDD ratio mode, therefore, R10 stipulates the cross-carrier scheduling scheme of HARQ (Hybrid Automatic Repeat Request, hybrid automatic repeat request), in this scheme, the response command for the data feedback carried by the subcarrier is unified on the main carrier. The response instruction may include ACK (Acknowledge, correct response instruction) or NACK (Not Acknowledged, incorrect response instruction). In R11 (Release 11, version 11), due to the introduction of Inter-band (out-of-band) carrier aggregation, it is possible to configure different TDD configuration modes for different carriers. The benefits of introducing the hybrid TDD configuration mode in inter-band carrier aggregation are self-evident. First, it makes it possible for different users in the same cell to configure different ratios according to service needs; second, by configuring UL for low-band carriers ( Uplink, uplink) more TDD ratio mode, configure DL (downlink, downlink) more TDD ratio for high frequency bands, which can more effectively improve uplink coverage and DL capacity; third, different frequency bands do not need to be configured with the same TDD The matching ratio can ensure the compatibility with the existing TDD configured frequency bands.

Currently, inter-band carrier aggregation supports different TDD configuration modes and has been approved in R11. The involved TDD configuration modes mainly include TDD0-6 configuration modes, and different configuration modes support different uplink and downlink subframe configurations. When the TDD terminal supports simultaneous transmission and reception, the multi-carrier ACK/NACK feedback still uses the single-carrier scheduling scheme, that is, the ACK/NACK feedback of all carriers is performed on the primary carrier. However, this feedback scheme will have a large RTT (Round-Trip Time, round-trip delay) in the multi-carrier aggregation system. The following analysis is combined with specific examples:

The ACK/NACK feedback of HARQ in the single carrier system is generally carried out in 4ms and later, and the specific feedback position depends on the arrival position of the UL/DL subframe and the number of ACK/NACKs of the multiplexing (multiplexing)/bundling (binding) of the subframe . Figure 1 shows a schematic diagram of the ACK/NACK feedback of UL/DL HARQ in the TDD1 matching mode. )", since the fourth subframe after the "uplink 1" can be used as a downlink subframe, therefore, the ACK/NACK sent by the base station for the uplink data is transmitted in the fourth subframe after the "uplink 1". The RTT of the transmission=8ms; in the uplink data transmission 2, the uplink data is carried on the "uplink 2 (that is, in the second uplink subframe)", since the fourth subframe after the "uplink 2" is an uplink subframe, The 6th subframe is the downlink subframe. Therefore, the ACK/NACK sent by the base station for the uplink data cannot be performed in the 4th subframe after the "uplink 2", and can only wait until the 6th subframe after the "uplink 2". Frame (the subframe is "downlink 4", that is, the fourth downlink subframe) feedback, the RTT of this transmission = 10ms; similarly, in the downlink data transmission 3, the terminal targets the "downlink 1" (that is, the first The downlink data transmitted on the "downlink subframe)" will feed back ACK/NACK on the seventh uplink subframe after the "downlink 1" (this subframe is "uplink 3", that is, the third uplink subframe), The RTT corresponding to this transmission is 11 ms; in the downlink data transmission 4, the terminal will transmit the downlink data in the "S subframe" after "downlink 1" in the sixth uplink subframe after the subframe ( The subframe is "uplink 3", that is, ACK/NACK is fed back on the third uplink subframe), and the RTT corresponding to this transmission is 10ms.

As mentioned above, in TDD mode, the ACK/NACK for the data feedback carried on a certain uplink subframe or downlink subframe will be delayed due to the arrival time of the next downlink subframe or uplink subframe, so that the RTT The delay becomes larger. Generally, for uplink ACK/NACK feedback, the maximum RTT is as high as 14ms, and for downlink ACK/NACK feedback, the maximum RTT is as high as 17ms, which will bring large data delay and delay jitter.

To sum up, the prior art has the problem of untimely feedback of acknowledgment commands such as ACK/NACK, which leads to a large data transmission delay and affects data transmission quality.

Contents of the invention

In view of this, embodiments of the present invention provide a method and device for feeding back response commands in a carrier aggregation system. By adopting the technical solution, the timeliness of response command feedback can be improved, thereby reducing data transmission delay and improving data transmission quality.

Embodiments of the present invention are realized through the following technical solutions:

According to an aspect of an embodiment of the present invention, a method for feeding back a response instruction in a carrier aggregation system is provided, including:

receiving data carried by the current subframe;

Determining a subframe whose time interval from the current subframe satisfies the setting requirements from the subframes of the response instructions that can carry the data included in the plurality of carriers that have been processed by the base station offset;

A response instruction for the data feedback is carried on the determined subframe.

According to another aspect of the embodiments of the present invention, there is also provided an apparatus for feeding back a response instruction in a carrier aggregation system, including:

a receiving unit, configured to receive data carried by the current subframe;

The subframe determination unit is configured to determine that the time interval from the current subframe meets the setting requirements from the subframes respectively included in the plurality of carriers that have been processed by the base station offset and can carry the response instruction of the data received by the receiving unit a subframe of

An instruction feedback unit, configured to carry a response instruction for the data feedback on the subframe determined by the subframe determining unit.

According to another aspect of the embodiments of the present invention, there is also provided a base station, including the above-mentioned apparatus for feeding back a response instruction in a carrier aggregation system.

According to another aspect of the embodiments of the present invention, there is also provided a user equipment, including the above-mentioned apparatus for feeding back a response instruction in a carrier aggregation system.

Through at least one of the above technical solutions provided by the embodiments of the present invention, the base station performs offset processing on multiple carriers in advance, and the data receiver, after receiving the data carried by the current subframe, respectively includes Among the subframes that can carry the response command of the data, determine a subframe whose time interval with the current subframe meets the setting requirements, and carry the response command for the received data feedback on the determined subframe . According to this technical solution, the response command for the received data feedback can be carried on multiple carriers that have been processed by the base station offset. Compared with the prior art, the timeliness of the response command feedback is improved, thereby reducing the data transmission delay. Improve data transfer quality.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, and are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the attached picture:

FIG. 1 is a schematic diagram of ACK/NACK feedback of UL/DL HARQ in TDD1 matching mode;

FIG. 2 is a schematic flowchart of a base station performing offset processing on multiple supported carriers according to Embodiment 1 of the present invention;

FIG. 3 is a schematic diagram of time-domain offset of TDD1-proportioned carrier 1 and TDD2-proportioned carrier 2 according to Embodiment 1 of the present invention;

FIG. 4 is a schematic diagram of the time domain distribution of all downlink subframes included in carrier 1 and carrier 2 provided by Embodiment 1 of the present invention;

FIG. 5 is a schematic diagram of the time domain distribution of all uplink subframes included in carrier 1 and carrier 2 provided by Embodiment 1 of the present invention;

FIG. 6 is a schematic diagram of time-domain offset of TDD1-proportioned carrier 3 and TDD5-proportioned carrier 4 provided by Embodiment 1 of the present invention;

FIG. 7 is a schematic diagram of the time domain distribution of all downlink subframes included in carrier 3 and carrier 4 provided by Embodiment 1 of the present invention;

FIG. 8 is a schematic diagram of the time domain distribution of all uplink subframes included in carrier 3 and carrier 4 provided by Embodiment 1 of the present invention;

FIG. 9 is a schematic flowchart of a feedback response instruction in the carrier aggregation system provided by Embodiment 1 of the present invention;

FIG. 10 is a schematic structural diagram of an apparatus for feeding back a response instruction in a carrier aggregation system according to Embodiment 2 of the present invention;

FIG. 11 is another schematic structural diagram of an apparatus for feeding back a response instruction in a carrier aggregation system according to Embodiment 2 of the present invention;

FIG. 12 is another schematic structural diagram of an apparatus for feeding back a response instruction in a carrier aggregation system according to Embodiment 2 of the present invention.

detailed description

In order to provide an implementation plan for improving the timeliness of response command feedback, the embodiment of the present invention provides a method and device for feedback command response in a carrier aggregation system. The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that , the preferred embodiments described here are only used to illustrate and explain the present invention, not to limit the present invention. And in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

Embodiment one

In the multi-carrier scheme, when the subframe capable of carrying the response instruction on the main carrier has not arrived, there may be a subframe capable of carrying the response instruction on the subcarrier. frequency resources to improve the timeliness of response command feedback, and through carrier offset, the response command can be fed back on the subframe that can carry the response command on the subcarrier, thereby reducing HARQRTT to reduce data delay and delay jitter. And on this basis, for some carriers in the TDD matching mode with a small number of uplink subframes, it can better reduce the response command congestion caused by the concentration of response feedback of downlink data on these uplink subframes.

Embodiment 1 of the present invention provides a method for feeding back response commands in a carrier aggregation system. The method can improve the timeliness of response command feedback (such as ACK/NACK), thereby reducing data transmission delay and improving data transmission quality. Specifically, this method mainly involves the base station's offset processing process for multiple carriers supported by the base station and the determination process of the subframe carrying the response instruction to be fed back after the data receiver (base station or user equipment) receives the data. Subsequent embodiments will Taking the response instruction as ACK/NACK as an example, the processing procedures involved in this embodiment will be described in detail respectively.

1. The base station's offset processing process for multiple supported carriers

The base station performs offset processing on the supported multiple carriers, mainly performing time-domain offset on at least one of the supported multiple carriers, and offsets the supported multiple carriers to all the subframe types of the same subframe type included in each carrier. The subframes tend to be evenly distributed in the time domain, where the subframe types include uplink subframes and downlink subframes.

Specifically, the base station shifts the supported multiple carriers until all subframes of the same subframe type included in each carrier tend to be evenly distributed in the time domain, which can be realized through various offset methods. Figure 2 shows that the base station will A preferred implementation in which multiple supported carriers are offset to all subframes of the same subframe type included in each carrier tends to be evenly distributed in the time domain, as shown in Figure 2, mainly includes the following steps:

In step 201, the base station shifts the supported multiple carriers according to different shifting methods to obtain multiple sets of shifted carriers.

In this step 201, the offset method can be set in advance, and multiple offset methods can be set to obtain multiple groups of shifted carriers through the multiple offset methods, and then select the optimal offset result. Specifically, the offset method can set the number of carriers to be offset among the plurality of carriers and/or the conditions that the offset carriers need to meet. Further, on this basis, the offset time of each carrier can be set. The number of subframes that can be offset, for example, can be set to offset 1, 2, 3...n subframes when carrier offset is set, where n is smaller than the number of subframes included in the carrier. For example, the offset method may include the conditions that the carrier to be offset needs to meet, such as performing a time-domain analysis on the carrier with the number of uplink subframes greater than the first set value and the carrier with the number of downlink subframes greater than the second set value. The relative offset on the above, that is, the carrier with a large number of uplink subframes and the carrier with a large number of downlink subframes are offset from each other, so as to easily achieve the purpose of uniform distribution of subframes of the same subframe type in the time domain. The specific offset mode can be flexibly set according to actual needs, and will not be listed here.

Step 202, for each group of shifted carriers, arrange all subframes of the same subframe type included in each carrier in the time domain, and determine the variance value of the interval between adjacent subframes.

In this step 202, after arranging all subframes of the same subframe type included in each carrier in the time domain, the intervals between adjacent subframes of the same subframe type are sequentially determined, and the square of each interval is calculated. difference.

Step 203. Select a group of shifted carriers with the smallest variance value as the optimal shift result.

In this step 203, since the variance value can represent the uniformity of the distribution of subframes of the same type, usually the smaller the variance, the more uniform the distribution. Therefore, a group of shifted carriers with the smallest variance is selected as the subframe of the same type The offset result with the most even distribution of subframes.

So far, the process in which the base station shifts the supported multiple carriers to the point where all subframes of the same subframe type included in each carrier tend to be evenly distributed in the time domain ends. Through the process corresponding to Figure 2, the base station determines the offset carrier with the smallest variance by determining the interval variance of each carrier in the time domain after the offset, and determines that all subframes of the same subframe type included in each carrier are in the Carriers that tend to be uniformly distributed in the time domain.

In practical applications, when the base station performs offset processing on the supported multiple carriers, since the carrier includes both uplink subframes and downlink subframes, it needs to consider that the subframes of these two subframe types tend to be uniformly distributed in the time domain. In a preferred embodiment, in the above step 202, the variance value of the interval between adjacent uplink subframes and the interval between adjacent downlink subframes can be determined for each group of shifted carriers. Variance value, in step 203, a group of shifted carriers with the smallest difference between two variances may be selected as the optimal shift result.

It should be understood that the above-mentioned way that the base station performs offset processing on the supported multiple carriers is only a preferred embodiment of the present invention. In practical applications, various subframes of the same subframe type after offset can All the shifting modes in which the frames tend to be evenly distributed are within the protection scope of the present application.

In order to better understand the processing process of carrier offset by the base station, the process of relative carrier offset will be specifically described below in combination with the TDD configuration supported by the current carrier.

In the TDD configuration, for TDD3-5, the number of downlink subframes included is large, and the base station should consider relative offset of these TDD configurations and the carrier configured with TDD0-2 or TDD6, so as to fully reduce the RTT delay.

Figure 3 shows a schematic diagram of the relative offset in the time domain between TDD1 matched carrier 1 and TDD2 matched carrier 2. As shown in Figure 3, TDD1 matched carrier 1 can be compared with TDD2 matched carrier 2 Offset by 2 subframes in the time domain, according to the offset results shown in Figure 3, all downlink subframes included in carrier 1 and carrier 2 tend to be evenly distributed in the time domain, as shown in Figure 4, carrier 1 and carrier 2 All uplink subframes included in the carrier 2 tend to be evenly distributed in the time domain, as shown in FIG. 5 .

Figure 6 shows a schematic diagram of the relative offset in the time domain between TDD1 matched carrier 3 and TDD5 matched carrier 4. As shown in Figure 6, TDD1 matched carrier 3 can be compared to TDD5 matched carrier 4 Three subframes are offset in the time domain. According to the offset results shown in Figure 6, all downlink subframes included in carrier 3 and carrier 4 tend to be evenly distributed in the time domain. All uplink subframes included in the carrier 4 tend to be evenly distributed in the time domain, as shown in FIG. 8 .

After the base station uses the above process to perform time-domain offset on the supported multiple carriers, the base station can schedule the main carrier and the sub-carrier separately, and send UL grant ( Uplink grant, uplink authorization) and DL assignment (Downlink assignment, downlink assignment). In addition, the feedback of ACK/NACK is not limited to feedback on the main carrier, but can also be fed back on the subcarrier. For example, the uplink ACK/NACK for downlink data feedback is not limited to the PUCCH (Physical uplink control channel, physical uplink control channel) of the main carrier. control channel), but can be sent on the PHICH (Physical HARQ indicator channel, physical HARQ indicator channel) and PUCCH of the main carrier, or can be sent on the PHICH and PUCCH of the subcarrier.

2. After receiving the data, the data receiver determines the subframe of the response command carrying the data

After the base station performs offset processing on the supported carrier, the data receiver can feedback the response command based on the shifted carrier. The response command may not be limited to feedback on the main carrier, but may also be fed back on the sub-carrier. FIG. 9 shows a schematic flow chart of a feedback response command in the carrier aggregation system. As shown in FIG. 9, the process of the feedback response command mainly includes the following steps:

Step 901, the data receiver receives the data carried by the current subframe.

In step 901, the data receiver may be a base station or a user equipment. Specifically, if the data receiver is a base station, the base station receives the uplink data carried by the current uplink subframe. If the data receiver is a user equipment, Then the user equipment receives the downlink data carried by the current downlink subframe.

In step 902, the data receiver determines a subframe whose time interval from the current subframe satisfies the set requirement from the subframes of the response instruction capable of carrying data included in the plurality of carriers that have undergone base station offset processing.

In this step 902, if the data receiver is a base station, the subframe capable of carrying the response command of the data is a downlink subframe, and if the data receiver is a user equipment, the subframe capable of carrying the response command of the data is an uplink subframe frame. Moreover, if the data receiver is the user equipment, before the user equipment performs this step, it needs to receive the offset information of the multiple carriers sent by the base station and processed by the base station offset, so as to correctly determine the current sub-carrier according to the offset information. A subframe whose time interval meets the setting requirements.

In step 903, the data receiver carries a response instruction for the data feedback on the determined subframe.

In this step 903, if the data receiver is the base station, the base station carries a response instruction for the uplink data feedback on the determined downlink subframe; The uplink bears a response command for the downlink data feedback, where the response command may be ACK/NACK.

So far, the process of feeding back the response command in the carrier aggregation system ends. Through the process corresponding to FIG. 9, after receiving the data carried by the current subframe, the data receiver determines the subframes corresponding to the current A subframe whose time interval meets the set requirement, and the determined subframe bears a response instruction for the received data feedback. According to this technical solution, the response command for the received data feedback can be carried on multiple carriers that have been processed by the base station offset. Compared with the prior art, the timeliness of the response command feedback is improved, thereby reducing the data transmission delay. Improve data transfer quality.

In step 902 included in the process corresponding to FIG. 9 , determine the time interval between the current subframe and the current subframe that satisfies the setting requirements from the subframes of the response instructions that can carry the data included in the plurality of carriers that have undergone base station offset processing. A subframe can be preferably in any of the following two ways:

method one

From the subframes that can carry the response instruction of the data included in the plurality of carriers that have been processed by the base station offset, and the time interval between the current subframe and the current subframe is greater than the processing time of the data, determine the minimum time interval between the current subframe and the current subframe of a subframe.

way two

From the subframes that are capable of carrying the data included in the multiple carriers that have been processed by the base station offset, the load of the carrying response instruction is less than the set threshold, and the time interval from the current subframe is greater than the processing time of the data , determine a subframe with the smallest distance from the current subframe.

In the above method 1 and method 2, the data processing time refers to the processing process of the data received by the data receiver.

After the user equipment receives the downlink data of the main carrier or the sub-carrier, since the user equipment needs to perform data decoding and other processing on the data after receiving the data, it takes a while to feed back ACK/NACK. Starting from the nth subframe (corresponding to the processing time of the user equipment for the data) after the downlink subframe of the sub-carrier, ACK/NACK feedback is performed on the uplink subframe of the main carrier or subcarrier. For the specific feedback position determination method, refer to the above method 1 or Method two. Specifically, when ACK/NACK feedback and data are on different carriers, the PUCCH resources used can be determined by base station configuration. ACK/NACK feedback of the downlink data, and the PUCCH resource that each user equipment can use in this area is configured by the base station through RRC signaling. Since multiple user equipments may be allocated the same PUCCH resource, the base station needs to pay attention during scheduling to avoid that the user equipment allocated the same PUCCH resource performs ACK/NACK feedback in the same uplink subframe of the same carrier. Similarly, after the base station receives the uplink data of the main carrier or subcarrier, it also starts from the nth subframe after the uplink subframe carrying the uplink data (corresponding to the processing time of the data by the base station), on the main carrier/subcarrier The uplink and downlink subframes perform ACK/NACK feedback. When the ACK/NACK feedback and data are on different carriers, the PHICH resource used is determined by the base station configuration. The specific configuration process is the same as the above PUCCH resource configuration process. The difference is that the configuration here is a PHICH resource.

According to the process corresponding to FIG. 9 , after receiving the ACK/NACK feedback, the base station can schedule the HARQ process again; after receiving the ACK/NACK feedback, the user equipment can perform retransmission or new transmission in the HARQ process again.

Embodiment two

Correspondingly, corresponding to the first embodiment above, the embodiment of the present invention also provides an apparatus for feeding back a response instruction in a carrier aggregation system.

FIG. 10 shows a schematic structural diagram of an apparatus for feeding back a response instruction in a carrier aggregation system provided in Embodiment 2. As shown in FIG. 10 , the apparatus includes:

a receiving unit 1001, a subframe determining unit 1002, and an instruction feedback unit 1003;

in:

The receiving unit 1001 is configured to receive data carried by the current subframe;

The subframe determination unit 1002 is configured to determine that the time interval from the current subframe satisfies the setting requirements from the subframes respectively included in the multiple carriers that have been processed by the base station offset and can carry the response instruction of the data received by the receiving unit 1001 a subframe of

The instruction feedback unit 1003 is configured to carry a response instruction for data feedback on the subframe determined by the subframe determining unit 1002 .

In a preferred implementation mode provided by Embodiment 2 of the present invention, the subframe determining unit 1002 included in the apparatus shown in FIG. Among the subframes whose time interval with the current subframe is greater than the data processing time, determine a subframe with the smallest time interval with the current subframe; Among the subframes whose response command and the load carrying the response command are less than the set threshold and whose time interval from the current subframe is greater than the data processing time, determine a subframe with the smallest interval from the current subframe.

The apparatus for feeding back the response instruction in the carrier aggregation system shown in FIG. 10 may be located in the base station or in the user equipment.

When the device shown in FIG. 10 is located in the base station, the receiving unit 1001 is specifically configured to receive the uplink data carried by the current uplink subframe; the subframe determining unit 1002 is specifically configured to respectively include Among the downlink subframes, determine a subframe whose time interval with the current uplink subframe satisfies the set requirement.

When the apparatus shown in FIG. 10 is located in the user equipment, the receiving unit 1001 is specifically configured to receive the downlink data carried by the current downlink subframe; Among the included uplink subframes, determine a subframe whose time interval with the current downlink subframe satisfies the set requirement.

As shown in Figure 11, in a preferred implementation mode provided by Embodiment 2 of the present invention, the device shown in Figure 10 may further include:

The offset information receiving unit 1004 is configured to, in the subframe determining unit 1002, determine a subframe whose time interval from the current downlink subframe satisfies the setting requirements from the uplink subframes respectively included in the plurality of carriers that have undergone base station offset processing. Before the frame, receive the offset information of multiple carriers sent by the base station and processed by the base station offset.

The apparatus for feeding back the response instruction in the above-mentioned carrier aggregation system shown in FIG. 11 may be located in the user equipment.

As shown in Figure 12, in a preferred implementation mode provided by Embodiment 2 of the present invention, the device shown in Figure 10 may further include:

The carrier offset unit 1005 is configured to offset the supported multiple carriers to the uniform distribution of all subframes of the same subframe type included in each carrier in the time domain, wherein the subframe types include uplink subframes and downlink subframes frame.

In a preferred implementation mode provided by Embodiment 2 of the present invention, the carrier offset unit 1005 included in the device shown in FIG. shifted carriers, and for each group of shifted carriers, arrange all subframes of the same subframe type included in each carrier in the time domain, and determine the variance value of the interval between adjacent subframes, A set of shifted carriers with the smallest variance value is selected as the shift result.

In a preferred implementation mode provided by Embodiment 2 of the present invention, the carrier offset unit 1005 included in the apparatus shown in FIG. A relative offset in the time domain is performed between the carrier and the carrier whose number of downlink subframes is greater than the second set value.

The apparatus for feeding back the response instruction in the carrier aggregation system shown in FIG. 12 may be located in the base station.

It should be understood that the units included in the above device for feeding back response instructions in the carrier aggregation system are only logically divided according to the functions realized by the device, and in practical applications, the above units may be superimposed or split. In addition, the functions implemented by the device for feeding back response instructions in the carrier aggregation system provided in this embodiment correspond one-to-one to the flow of the method for feeding back response instructions in the carrier aggregation system provided in the above embodiments. For the more detailed processing implemented by the terminal The process has been described in detail in the above method embodiments, and will not be described in detail here.

Moreover, the device for feeding back the response instruction in the carrier aggregation system in the second embodiment also has a functional module capable of implementing the solution in the first embodiment, which will not be repeated here.

While preferred embodiments of the present application have been described, additional changes and modifications to these embodiments can be made by those skilled in the art once the basic inventive concept is appreciated. Therefore, the appended claims are intended to be construed to cover the preferred embodiment and all changes and modifications which fall within the scope of the application.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (14)

1. the method feeding back response instruction in a carrier aggregation system, it is characterised in that including:

Receive the data of present sub-frame carrying；

The response that can carry described data included respectively from the multiple carrier waves processed through base station drift refers to In the subframe of order, determine that the time interval with present sub-frame meets and set the subframe required；

The subframe determined carries the response for described data instruct；

Base station carries out migration processing to multiple carrier waves, including:

All subframes of the same subframe type that multiple carrier shifts to each carrier wave supported includes are existed by base station Tending in time domain being uniformly distributed, wherein, described subframe type includes sub-frame of uplink and descending sub frame.

2. the method for claim 1, it is characterised in that multiple carrier shifts that base station will be supported All subframes of the same subframe type included to each carrier wave tend to being uniformly distributed in time domain, including:

The multiple carrier waves supported are offset according to different offset manner, after obtaining organizing skew by base station more Carrier wave；

For often organizing the carrier wave after skew, all subframes of the same subframe type included by each carrier wave are in time domain Upper arrangement, and determine the variance yields at interval between each adjacent sub-frame；

Select there is the carrier wave after one group of skew of minimum variance value as migration result.

3. method as claimed in claim 2, it is characterised in that the multiple carrier waves supported are carried out by base station The offset manner of skew, including:

By the sub-frame of uplink number included more than the carrier wave of the first setting value and the descending sub frame number that includes more than the The carrier wave of two setting values carries out the relative skew in time domain.

4. the method for claim 1, it is characterised in that multiple from process through base station drift In the subframe of the response instruction of described data that what carrier wave included respectively can carry, determine and present sub-frame Time interval meets the subframe setting requirement, including:

The response that can carry described data included respectively from the multiple carrier waves processed through base station drift refers to Make and with the time interval of present sub-frame more than in the subframe processing the time of described data, determine and work as The subframe that the time interval of front subframe is minimum；Or

The response that can carry described data included respectively from the multiple carrier waves processed through base station drift refers to Make, carry the load capacity of response instruction less than setting threshold value and with the time interval of present sub-frame more than described In the subframe processing the time of data, determine and the subframe being spaced minimum of present sub-frame.

5. the method for claim 1, it is characterised in that receive the data of present sub-frame carrying, Including: base station receives the upstream data of current sub-frame of uplink carrying；

The subframe of the described response instruction that can carry described data is descending sub frame.

6. the method for claim 1, it is characterised in that receive the data of present sub-frame carrying, Including: subscriber equipment receives the downlink data of current downlink subframe carrying；

The subframe of the described response instruction that can carry described data is sub-frame of uplink.

7. method as claimed in claim 6, it is characterised in that subscriber equipment is from through base station drift In the sub-frame of uplink that the multiple carrier waves processed include respectively, determine that the time interval with current downlink subframe is full Before foot sets the subframe required, also include:

Receive the offset information of the multiple carrier waves processed through described base station drift that base station sends.

8. a carrier aggregation system feeds back the device of response instruction, it is characterised in that including:

Receive unit, for receiving the data of present sub-frame carrying；

Subframe determines unit, for carrying from what the multiple carrier waves processed through base station drift included respectively In the subframe of the response instruction of the data that described reception unit receives, determine the time interval with present sub-frame Meet and set the subframe required；

Instruction feedback unit, carries for described number in the subframe that unit is determined for determining in described subframe According to response instruction；

Also include:

Carrier shift unit, for the same subframe type included by multiple carrier shifts to each carrier wave supported All subframes tend to being uniformly distributed in time domain, wherein, described subframe type includes sub-frame of uplink and descending Subframe.

9. device as claimed in claim 8, it is characterised in that described carrier shift unit, specifically uses In the multiple carrier waves supported are offset according to different offset manner, obtain the carrier wave after organizing skew more, And for often organizing the carrier wave after skew, all subframes of the same subframe type included by each carrier wave are in time domain Arrangement, and determine the variance yields at interval between each adjacent sub-frame, select one group with minimum variance value inclined Carrier wave after shifting is as migration result.

10. device as claimed in claim 9, it is characterised in that described carrier shift unit, specifically uses In by the sub-frame of uplink number that includes of the multiple carrier waves supported more than the carrier wave of the first setting value with under including Row number of sub frames carries out the relative skew in time domain more than the carrier wave of the second setting value.

11. devices as claimed in claim 8, it is characterised in that described subframe determines unit, specifically uses Instruct in the response that can carry described data included respectively from the multiple carrier waves processed through base station drift, And with the time interval of present sub-frame more than in the subframe processing the time of described data, determine and current son The subframe that the time interval of frame is minimum；Or include respectively from the multiple carrier waves processed through base station drift Can carry described data response instruction, carrying response instruction load capacity less than set threshold value and with work as The time interval of front subframe, more than in the subframe processing the time of described data, is determined and between present sub-frame Every a minimum subframe.

12. 1 kinds of base stations, it is characterised in that include that the carrier wave described in any one of claim 8 to 11 gathers Assembly system feeds back the device of response instruction；

Wherein, described reception unit, specifically for receiving the upstream data of current sub-frame of uplink carrying；

Described subframe determines unit, specifically for include respectively from the multiple carrier waves processed through base station drift In descending sub frame, determine that the time interval with current sub-frame of uplink meets and set the subframe required.

13. 1 kinds of subscriber equipmenies, it is characterised in that include the carrier aggregation described in claim 8 or 11 System is fed back the device of response instruction；

Wherein, described reception unit, specifically for receiving the downlink data of current downlink subframe carrying；

Described subframe determines unit, specifically for include respectively from the multiple carrier waves processed through base station drift In sub-frame of uplink, determine that the time interval with current downlink subframe meets and set the subframe required.

14. subscriber equipmenies as claimed in claim 13, it is characterised in that also include:

Offset information receives unit, for determining that unit is multiple from process through base station drift in described subframe In the sub-frame of uplink that carrier wave includes respectively, determine that the time interval with current downlink subframe meets and set requirement A subframe before, receive the skew letter of the multiple carrier waves processed through described base station drift that base station sends Breath.