WO2014048156A1 - Across-carrier scheduling method, communications method, communications system, base station, and communications terminal - Google Patents

Abstract

Provided are an across-carrier scheduling method for an aggregated carrier, a communications method, a communications system, a base station, and a communications terminal. The across-carrier scheduling method comprises: for an uplink subframe of a scheduled carrier, if a corresponding subframe of a primary scheduling carrier is also an uplink subframe, performing an operation according to the uplink subframe of the scheduled carrier and one of the feasible time sequences among original HARQ scheduling, initial transmission, PHICH confirmation, and retransmission-after-failure time sequences of the corresponding uplink subframe of the primary scheduling carrier; if the corresponding subframe of the primary scheduling carrier is not the uplink subframe, performing an operation on the uplink subframe of the scheduled carried according to the original time sequence in a condition that the original HARQ scheduling, initial transmission, PHICH confirmation, retransmission-after-failure time sequences of the uplink subframe of the scheduled carrier are feasible; otherwise, performing HARQ scheduling, initial transmission, PHICH confirmation, retransmission-after-failure on the uplink subframe of the scheduled carrier by using the HARQ scheduling, initial transmission, PHICH confirmation, retransmission-after-failure time sequences defined according to subframe configurations of an aggregated carrier.

Description

 Cross-carrier scheduling method and communication method, communication system, base station and communication terminal

Technical field

 This application relates to cross-carrier scheduling. In particular, it relates to a method for cross-carrier scheduling of aggregated carriers. The present application also relates to a communication method, a communication system, a base station, and a communication terminal using the cross-carrier scheduling method.

Background technique

 In the existing Long Term Evolution Time Division Duplex (LTE TDD) system, there are seven uplink and downlink ratio schemes as shown in Figure 1. As shown in Fig. 1, in a 10 ms radio frame period, each sub-frame is represented by 0 to 9 (the duration of each sub-frame is l ms). Wherein, subframe 1 (and subframe 6 in the case of a configuration period of 5 ms) is a special subframe, and the special subframe does not transmit uplink data, but may transmit PHICH (Physical HARQ (Hybrid Automatic Repeat Request) indicator) Channel) signaling to confirm that the upstream data was received correctly. Therefore, special subframes are usually treated as downlink subframes in the discussion of HARQ timing relationships. In this paper, the special subframe is also used as the downlink subframe.

 Fig. 2 schematically shows an existing HARQ scheduling/initial transmission/PHICH confirmation/failure retransmission process. First, the base station sends scheduling information to the communication terminal in a certain downlink subframe (subframe η); after receiving the scheduling information, the communication terminal performs initial transmission in a subsequent uplink subframe (subframe n+k); The base station sends a PHICH acknowledgement for the initial transmission in the subsequent downlink subframe (subframe n+k+j); in the case of the initial transmission failure, the communication terminal is in the subsequent uplink subframe (subframe n+k+j+ t) Retransmit. The values of k, j, and t are not less than 4 ms, and usually use the same position in the frame period for initial transmission and retransmission, so the time interval from initial transmission to retransmission is generally 10 ms or 20 ms. Ie usually j+t=10 ms or 20 mso

For the above subframe configuration, Table 1 below shows the existing single carrier HARQ scheduling/initial transmission/PHICH exact iA/failed retransmission timing. In Table 1, each row corresponds to the uplink and downlink subframe configuration 0-6 described above, and each column corresponds to subframes 0-9 in the 10 ms frame period. In addition, the hatched cell indicates that the subframe is a downlink subframe; the unhatched cell indicates that the subframe is an uplink subframe, and the meaning of the number therein is: The number outside the parenthesis indicates that it is in several subframes (ie, a few seconds) After the PHICH confirmation for the initial transmission of this subframe (corresponding to j above), the negative number in parentheses indicates that the initial transmission to be performed in this subframe is scheduled before several subframes. (corresponding to Above]. For example, for subframe 2 with the carrier of configuration 0, the number "-6" in parentheses indicates that the subframe 6 before the previous period, that is, the initial transmission to be performed in subframe 2 of the current period, is performed before the six subframes. Scheduling, and after 4 subframes, that is, subframe 6 of the current cycle, PHICH confirmation is performed on the initial transmission performed in subframe 2 of the current cycle.

其中，对于初传到 PHICH确认之间的间隔为 7 ms的情况， 即在采用配 置 0的情况下的子帧 3和子帧 8以及采用配置 6的情况下的子帧 8， 由于 j 值为 7而从确认到重传的时间间隔 t大于等于 4, 因此不能在初传的一个 10 ms帧周期之后进行重传， 而其初传到重传时间间隔（RTT )为 20 ms或更 长。 也就是说， 当在这些子帧进行的初传失败的情况下， 现有的时序设置不 允许在下一个帧周期的同一子帧进行重传， 而需要在下面第二个帧周期同一 子帧进行重传。

Wherein, the interval between the initial transmission to the PHICH confirmation is 7 ms, that is, the subframe 3 and the subframe 8 in the case of the configuration 0 and the subframe 8 in the case where the configuration 6 is adopted, since the j value is 7 The time interval t from the acknowledgment to the retransmission is greater than or equal to 4, so the retransmission cannot be performed after a 10 ms frame period of the initial transmission, and the initial transmission to the retransmission interval (RTT) is 20 ms or longer. That is to say, when the initial transmission in these subframes fails, the existing timing setting does not allow retransmission in the same subframe of the next frame period, but needs to be performed in the same subframe in the second frame period below. Retransmission.

 In addition, in the case of carrier aggregation, one carrier is used as the primary scheduling carrier, and scheduling and PHICH confirmation of the subframes of the primary scheduling carrier and the scheduled carrier are performed on the primary scheduling carrier. In addition, the primary scheduling carrier and the scheduled carrier may adopt different subframe configurations in the foregoing uplink and downlink subframe configuration 0-6, respectively.

Summary of the invention An object of the technical solution of the present application is to provide a cross-carrier scheduling scheme in which the aggregate carrier uplink-downlink ratio is different under the condition that the existing single-carrier HARQ timing relationship cannot completely cover the cross-carrier scheduling.

 Another object of the technical solution of the present application is to reduce the RTT delay to 10 ms by PHICH timing and transmission mode optimization, especially for a case where the RTT is greater than 10 ms according to the existing HARQ timing; When the carrier configuration is 6, the scheduling delay of some of the subframes is reduced, such as from 7 ms to 4 ms, to reduce the overall transmission delay of the uplink data.

 According to an embodiment of the present application, a method for performing cross-carrier scheduling on an aggregated carrier is provided, where the aggregated carrier is composed of a primary scheduled carrier and a scheduled carrier whose inconsistent uplink and downlink subframes are matched, and the method includes: Uplink subframe of the carrier: If the corresponding subframe of the primary scheduling carrier is also an uplink subframe, the original HARQ scheduling/initial transmission/PHICH confirmation according to the uplink subframe of the scheduled carrier and the corresponding uplink subframe of the primary scheduling carrier One of the possible timings in the /retransmission retransmission sequence performs HARQ scheduling/transmission/PHICH acknowledgment/fail retransmission for the uplink subframe of the scheduled carrier; if the corresponding subframe of the primary scheduling carrier is not an uplink subframe, Performing HARQ scheduling/initial transmission/PHICH acknowledgment/failover retransmission for the uplink subframe of the scheduled carrier according to the original timing; otherwise, using the newly defined HARQ scheduling according to the subframe configuration of the aggregated carrier /Initial/PHICH acknowledgment/failure retransmission timing HARQ scheduling/initial transmission/PHICH confirmation for the uplink subframe of the scheduled carrier / Failed retransmission operation.

 Further, the method may further include: for the HARQ scheduling/initial transmission/PHICH acknowledgment/failure retransmission timing in the scheduled carrier, the uplink subframe of the radio frame period whose initial transmission to the retransmission time interval exceeds 10 ms: The corresponding subframe of the primary scheduling carrier is also an uplink subframe, and the original HARQ scheduling/initial transmission/PHICH acknowledgment/failure retransmission timing of the corresponding uplink subframe is such that the initial transmission to the retransmission time interval is 10 ms. And performing HARQ scheduling/initial transmission/PHICH confirmation/failure retransmission on the uplink subframe of the scheduled carrier according to the original HARQ scheduling/initial transmission/PHICH acknowledgement/failure retransmission timing of the corresponding uplink subframe of the primary scheduling carrier. Operation; if the corresponding subframe of the primary scheduling carrier is not an uplink subframe, if the downlink subframe resource of the primary scheduling carrier allows, the newly defined HARQ scheduling/initial transmission/PHICH confirmation is configured according to the subframe configuration of the primary scheduling carrier. /Failure retransmission timing performs HARQ scheduling/initial transmission/PHICH acknowledgment/fail retransmission operation on the uplink subframe of the scheduled carrier, so that the uplink subcarrier of the scheduled carrier Early spread retransmission time interval of 10 ms radio frame period.

Further, the method may further include: an original of an uplink subframe of the primary scheduling carrier The HARQ scheduling/transmission/acknowledgement/retransmission timing is such that the time interval from the initial transmission to the retransmission of the uplink subframe exceeds the radio frame period of 10 ms: in the case where the downlink subframe resources of the scheduled carrier are allowed, Configuring a newly defined PHICH acknowledgment sequence according to the subframe of the scheduled carrier, and performing PHICH acknowledgment on the uplink subframe of the primary scheduling carrier on the downlink subframe of the scheduled carrier, so that the initial transmission of the uplink subframe of the primary scheduling carrier is The retransmission interval is a radio frame period of 10 ms, and the PHICH signaling of other uplink subframes of the primary scheduling carrier is still transmitted on the primary scheduling carrier.

 Further, the method may further include: for the HARQ scheduling/initial transmission/PHICH acknowledgment/failure retransmission timing in the scheduled carrier, the uplink subframe of the radio frame period whose initial transmission to the retransmission time interval exceeds 10 ms: If the downlink subframe resource of the scheduled carrier is allowed, the PHICH acknowledgement sequence is newly configured according to the subframe configuration of the scheduled carrier, and the PHICH acknowledgement is performed on the uplink subframe of the scheduled carrier in the downlink subframe of the scheduled carrier. The time interval from the initial transmission to the retransmission of the uplink subframe of the scheduled carrier is 10 ms, and the PHICH signaling of the other uplink subframes of the scheduled carrier is still transmitted on the primary scheduling carrier.

 Further, the method may further include: if the scheduled carrier adopts the uplink and downlink subframe configuration 6, if the downlink subframe resource of the primary scheduling carrier allows, the subframe 2, 3 of the scheduled carrier by the primary scheduling carrier Scheduling one or more of 4, 7, and 8 such that the uplink scheduling delay of the one or more subframes is less than 7 ms and greater than or equal to 4 ms, or the scheduling delay of subframe 4 is 5 ms Reduced to 4 ms.

 According to another embodiment of the present application, there is provided a communication method using an aggregated carrier, where the aggregated carrier is composed of a primary scheduling carrier and a scheduled carrier with inconsistent uplink and downlink ratios, the method comprising: the base station transmitting the primary scheduling carrier to the communication terminal Transmitting scheduling information; the communication terminal transmitting data to the base station in response to the scheduling information; the base station confirming the transmission; and the communication terminal retransmitting data to the base station if necessary based on the acknowledgement, wherein the base station and the communication terminal are based on the foregoing The scheduling, transmission, acknowledgment, and retransmission are performed by the timing determined by the cross-carrier scheduling method.

According to still another embodiment of the present application, there is provided a communication system that utilizes an aggregated carrier, where the aggregated carrier is composed of a primary scheduled carrier and a scheduled carrier that are inconsistent in uplink and downlink ratios, the system includes: a base station; and a communication terminal, where The base station is configured to transmit scheduling information to the communication terminal through the primary scheduling carrier, and to confirm data transmission from the communication terminal; wherein the communication terminal is configured to transmit data to the base station in response to scheduling information from the base station, and based on the information from the base station The acknowledgment retransmits data to the base station if needed; and wherein the base station and the communication terminal are configured to perform the scheduling, transmission, acknowledgment, and retransmission based on timing determined according to the cross-carrier scheduling method described above. According to still another embodiment of the present application, a base station is configured to communicate with a communication terminal by using an aggregated carrier, where the aggregated carrier is composed of a primary scheduling carrier and a scheduled carrier whose uplink and downlink ratios are inconsistent, wherein the base station The method includes: a scheduling device configured to send scheduling information to the communication terminal by using a primary scheduling carrier; the determining device configured to acknowledge data transmission from the communication terminal by aggregating carriers, wherein the scheduling device and the confirming device are configured to: The above scheduling and confirmation are performed based on the timing determined according to the above-described cross-carrier scheduling method.

 According to another embodiment of the present application, a communication terminal is provided, configured to communicate with a base station by using an aggregated carrier, where the aggregated carrier is composed of a primary scheduled carrier and a scheduled carrier whose uplink and downlink ratios are inconsistent, wherein the communication The terminal includes: a transmitting device configured to transmit data to the base station in response to scheduling information from the base station, and to retransmit data to the base station if necessary based on the acknowledgment from the base station to the transmission, wherein the transmitting device is configured to: The above transmission and retransmission are performed based on the timing determined according to the above-described cross-carrier scheduling method.

 With the cross-carrier scheduling scheme according to the present application, it is possible to provide effective cross-carrier scheduling for the aggregated carriers configured by configuring different carriers for the uplink and downlink subframes, thereby ensuring that the terminals and base stations from different vendors can satisfactorily satisfy the interoperability.

 In addition, with a further preferred scheme of cross-carrier scheduling according to the present application,

The HARQ timing relationship is optimized to reduce latency.

DRAWINGS

 The above and other objects, features and advantages of the present application will become more <RTIgt; In order to avoid obscuring the present application by unnecessary detail, only the device structure and/or processing steps closely related to the solution according to the present application are shown in the drawings, and other details not related to the present application are omitted. .

 1 is a schematic diagram showing seven uplink and downlink ratios adopted by the existing LTE TDD system;

 Fig. 2 schematically shows a conventional HARQ scheduling/initial/PHICH acknowledgment/failure retransmission procedure between a base station and a communication terminal;

 FIG. 3 is a flowchart illustrating a cross-carrier scheduling method according to an embodiment of the present application; FIG.

 4 is a flow chart showing a sub-process in a cross-carrier scheduling method according to an embodiment of the present application;

FIG. 5 is a flow diagram showing another sub-process in a cross-carrier scheduling method according to an embodiment of the present application. Cheng Tu

 6 is a flow chart showing still another sub-process in the cross-carrier scheduling method according to an embodiment of the present application;

 7 is a flow chart showing still another sub-process in the cross-carrier scheduling method according to an embodiment of the present application;

 FIG. 8 is a schematic diagram showing a communication method using an aggregated carrier according to another embodiment of the present application; FIG.

 9 is a schematic diagram showing a configuration example of a communication system using an aggregated carrier according to still another embodiment of the present application;

 FIG. 10 is a block diagram showing an exemplary structure of a computer that implements the method and apparatus of the present application.

detailed description

 Embodiments of the present application will be described below with reference to the drawings. It should be noted that, for the sake of clarity, the representations and descriptions of components and processes known to those of ordinary skill in the art that are not related to the present application are omitted from the drawings and the description.

 A method for cross-carrier scheduling of aggregated carriers according to an embodiment of the present application is described below with reference to the flowchart of FIG. The aggregated carrier of the scheduling object as the cross-carrier scheduling method according to the embodiment of the present application is composed of a primary scheduling carrier and a scheduled carrier whose uplink and downlink subframes are inconsistent. For the aggregated carrier composed of the same configured carrier, since the scheduled carrier has the same uplink and downlink subframe configuration as the primary scheduled carrier, only the original HARQ scheduling/initial transmission/PHICH acknowledgement/failure retransmission timing can be used. . When the configuration of the subframes of the primary scheduling carrier and the scheduled carrier is inconsistent, the original timing of the primary/scheduled carrier cannot be used for scheduling and PHICH confirmation of the uplink subframe of the scheduled carrier, but needs to be based on the carrier. The configuration determines the feasible timing.

 As shown in FIG. 3, in step S320 of the cross-carrier scheduling method according to the embodiment, determining, for an uplink subframe of the scheduled carrier, whether the primary scheduling carrier has an uplink subframe that overlaps with the uplink subframe of the scheduled carrier, That is, it is determined whether the corresponding subframe of the primary scheduling carrier is also an uplink subframe.

If the corresponding subframe of the primary scheduling carrier is also an uplink subframe (the determination result of step S320 is YES:), the corresponding uplink of the uplink subframe and the primary scheduling carrier of the mobility carrier may be determined according to step S330. One of the possible timings in the original HARQ scheduling/initial transmission/PHICH acknowledgment/failure retransmission timing of the subframe for HARQ scheduling/transmission of the uplink subframe of the scheduled carrier /PHICH Confirm/Fail retransmit operation. That is, if the uplink subframe of the primary scheduling carrier and the scheduled carrier overlap, if the scheduled carrier can be on the downlink subframe by the primary scheduling carrier according to the original timing of the uplink subframe of the scheduled carrier The uplink subframe is scheduled, and the PHICH acknowledgement is performed on the uplink subframe according to the original timing, and the original timing of the uplink subframe of the scheduled carrier may be adopted; on the other hand, the primary scheduling carrier may also be used. The original timing of the corresponding uplink subframe, the uplink subframe of the scheduled carrier is scheduled by the primary scheduling carrier in the downlink subframe, and the PHICH acknowledgement is performed on the uplink subframe according to the original timing.

 If the corresponding subframe of the primary scheduling carrier is not an uplink subframe (the determination result of step S320 is "NO":), it is determined in step S340 whether the original HARQ scheduling of the uplink subframe of the buffered carrier can be followed/ The initial transmission/PHICH acknowledgment/failure retransmission timing is performed on the HARQ scheduling/initial transmission/PHICH acknowledgment/fail retransmission operation. If the determination result is "Yes", the original timing of the uplink subframe of the scheduled carrier is adopted; if the determination result is "No", the newly defined HARQ scheduling/initial transmission/PHICH is configured using the subframe according to the aggregated carrier. Confirm/fail the operation when retransmitting. The newly defined timing according to the subframe configuration of the aggregated carrier may be a newly defined timing according to the subframe configuration of the primary scheduling carrier, or may be a newly defined timing according to the subframe configuration of the scheduled carrier (for example, according to the primary scheduling) The timing defined by the sub-frame configuration of the carrier cannot meet the predetermined requirements such as the RTT requirement).

 It should be noted that although the processes respectively performed for the different determination results of step S320 in FIG. 3 are shown as a general process, the cross-carrier scheduling method according to the embodiment of the present application may be separately determined for the different determination results of step S320. process. That is, the cross-carrier scheduling method according to the embodiment of the present application may be a process including only the processes of steps S320 and S330 or only the processes of steps S320, S340, S350, and S360.

 With the above method, even if the primary scheduling carrier and the scheduled carrier constituting the aggregated carrier have different uplink and downlink subframe configurations, it is possible to ensure that the uplink subframe of the scheduled carrier is HARQ scheduled/initial transmission at a feasible timing. PHICH confirms/failed retransmission operation.

In addition, based on the feasibility of ensuring cross-carrier strength, it is also desirable to further optimize the timing. In the case of using a single carrier or an aggregated carrier composed of carriers of the same configuration, for example, in the case where the RTT of some subframes mentioned above is greater than 10 ms, since the subframe configuration of the carrier is single, it can only be used according to the existing The timing is performed with an RTT of more than 10 ms (usually 20 ms) for HARQ scheduling/initial transmission/PHICH acknowledgment/fail retransmission. However, for an aggregated carrier composed of carriers with different subframe configurations, the available subframe configuration is different, thereby providing the possibility of optimizing the original timing. Therefore, the cross-carrier scheduling method according to the embodiment of the present application may further include a sub-process as shown in FIG. 4. This sub-process may be performed after the process shown in FIG. 3, for example, after step S330, S350 or S360, or may be performed in parallel with the steps shown in FIG.

 As shown in FIG. 4, in step S410, it is determined whether the HARQ scheduling/initial transmission/PHICH acknowledgment/failure retransmission timing of the uplink subframe of the scheduled carrier causes the RTT of the uplink subframe to exceed a frame period of 10 ms, that is, Whether the time from the initial transmission of the uplink subframe to the PHICH confirmation is greater than 6 ms. If the determination is no, there is no need to optimize the timing of the uplink subframe of the scheduled carrier, and the subroutine ends.

 If there is an uplink subframe in which the initial transmission to the retransmission time interval exceeds 10 m s in the scheduled carrier, then in step S420, it is determined whether the corresponding subframe in the primary scheduling carrier is also an uplink subframe. If the corresponding subframe of the primary scheduling carrier is also an uplink subframe, it is determined in step S430 whether the original HARQ scheduling/initial transmission/PHICH acknowledgment/failure retransmission timing of the corresponding uplink subframe of the primary scheduling carrier makes the initial transmission heavy The transmission interval is 10 ms (that is, the time from the initial transmission to the PHICH confirmation in this sequence is less than 7 ms:). If the determination of step S430 is YES, the frame performs HARQ scheduling/initial transmission/PHICH confirmation/fail retransmission operation in step S440. If the determination of step S430 is "NO", the uplink subframe of the scheduled carrier cannot be optimized using the subframe resources of the primary scheduling carrier, and the subroutine ends.

 If the corresponding subframe of the primary scheduling carrier is not an uplink subframe (the determination of step S420 is "NO":), then it is determined in step S450 whether the downlink subframe resource of the primary scheduling carrier allows the timing of the uplink subframe of the scheduled carrier. Optimize to have its RTT become 10 ms. If the determination in step S450 is YES, the HARQ scheduling/initialization of the uplink subframe of the scheduled carrier is performed by using the newly defined HARQ scheduling/initial transmission/PHICH acknowledgement/failure retransmission timing according to the subframe configuration of the primary scheduling carrier. The PHICH acknowledges/failed retransmission operation so that the RTT of the uplink subframe of the scheduled carrier is 10 ms.

 The sub-process in FIG. 4 enables the timing of the uplink subframe of the scheduled carrier to be optimized by using the downlink subframe resource of the primary scheduling carrier to shorten the RTT of the uplink subframe. However, in the case that the downlink subframe resource of the primary scheduling carrier is not allowed to perform the optimization, according to the embodiment of the present application, the downlink subframe resource of the scheduled carrier may also be utilized, that is, may be downlinked by the scheduled carrier. PHICH acknowledgment is performed on the subframe to reduce the RTT of certain subframes.

Therefore, the cross-carrier scheduling method according to the embodiment of the present application may further include a sub-process as shown in FIG. 5. As shown in FIG. 5, in step S510, it is determined whether the HARQ scheduling/initial transmission/PHICH acknowledgment/failure retransmission timing of the uplink subframe of the primary scheduling carrier causes the RTT of the uplink subframe to exceed a frame period of 10 ms. If the determination is no, there is no need to optimize the timing of the uplink subframe of the primary scheduling carrier, and the sub-process ends.

 If there is an uplink subframe in which the initial transmission to the retransmission time interval exceeds 10 ms, it is determined in step S520 whether the downlink subframe resource of the scheduled carrier allows timing of the uplink subframe of the primary scheduling carrier. Optimize to have its RTT become 10 ms. If the determination in step S520 is YES, the PHICH acknowledgement sequence is newly configured according to the subframe configuration of the scheduled carrier, and the uplink subframe is subjected to PHICH confirmation on the downlink subframe of the scheduled carrier, so that The uplink subframe of the primary scheduling carrier has an RTT of 10 ms. For other uplink subframes of the primary scheduling carrier, the PHICH acknowledgment is still transmitted on the primary scheduling carrier.

 In addition, the cross-carrier scheduling method according to the embodiment of the present application may further include a sub-process as shown in FIG. 6.

 As shown in FIG. 6, in step S610, it is determined whether the HARQ scheduling/initial transmission/PHICH acknowledgment/failure retransmission timing of the uplink subframe of the scheduled carrier causes the RTT of the uplink subframe to exceed a frame period of 10 ms. If the determination is no, there is no need to optimize the timing of the uplink subframe of the scheduled carrier, and the subroutine ends.

 If there is an uplink subframe in which the time interval from the initial transmission to the retransmission is more than 10 ms, it is determined in step S620 whether the downlink subframe resource of the scheduled carrier allows the uplink subframe of the scheduled carrier. Optimize to have its RTT become 10 ms. If the determination in step S620 is YES, the PHICH acknowledgement sequence is configured according to the subframe configuration of the scheduled carrier, and the PHICH acknowledgement is performed on the uplink subframe of the scheduled carrier on the downlink subframe of the scheduled carrier, to The RTT of the uplink subframe of the scheduled carrier is 10 ms. For other uplink subframes of the scheduled carrier, the PHICH acknowledgment is still transmitted on the primary scheduling carrier.

 It can be seen that the sub-processes shown in FIG. 4 and FIG. 6 are all optimized for the timing of the uplink subframe of the scheduled carrier, and the difference is that the sub-process of FIG. 4 adopts the downlink subframe resource of the primary scheduling carrier, and FIG. 6 The illustrated sub-process uses the downlink subframe resources of the scheduled carrier. If the downlink subframe resource of the primary scheduling carrier is allowed, the downlink subframe resource of the primary scheduling carrier may be preferentially used to optimize the timing of the uplink subframe of the scheduled carrier, so that the scheduling of the uplink subframe of the scheduled carrier is performed. PHICH acknowledgments are performed by the primary scheduled carrier.

In addition, as shown in the foregoing Table 1, according to the original timing of the uplink and downlink subframe configuration 6, the uplink scheduling delay of subframes 2, 3, 7, and 8 is 7 ms, and the uplink scheduling delay of subframe 4 is 5 ms. In the case that the primary scheduling carrier and the scheduled carrier of the aggregated carrier have different uplink and downlink subframe configurations, and the scheduled carrier adopts the uplink and downlink subframe configuration 6, it is possible to reduce the uplink by using the downlink subframe resource of the primary scheduling carrier. Scheduling delay. Therefore, the cross-carrier scheduling method according to the embodiment of the present application may further include a sub-process as shown in FIG. 7.

 As shown in FIG. 7, it is determined in step S710 whether the scheduled carrier adopts the downlink subframe configuration 6. If the scheduled carrier adopts the uplink and downlink subframe configuration 6, it is determined in step S720 whether the downlink subframe resource of the primary scheduling carrier is allowed by one or more of the subframes 2, 3, 4, 7, and 8 of the scheduled carrier. The scheduling is performed such that the uplink scheduling delay of subframes 2, 3, 7, and 8 is less than 7 ms and greater than or equal to 4 ms, or the scheduling delay of subframe 4 is reduced from 5 ms to 4 ms. If the result of the determination in step S720 is "YES", the scheduled scheduling is performed by the primary scheduling carrier to reduce the uplink scheduling delay of the subframe 2, 3, 4, 7 or 8 of the scheduled carrier.

 Through this sub-process, the overall transmission delay of the uplink data can be reduced.

 Next, a specific embodiment of the cross-carrier scheduling method according to an embodiment of the present application will be described with respect to aggregated carriers configured for different subframes.

 In the case that the carrier configured by each subframe as shown in Table 1 above constitutes an aggregate carrier, if the uplink subframe of the scheduled carrier is a subset of the uplink subframe of the primary scheduling carrier, the primary scheduling carrier may be simply adopted. Timing is used as a timing reference for cross-carrier scheduling. Therefore, in the following description, the cross-carrier scheduling of the aggregated carrier in the case where the uplink subframe of the scheduled carrier is not a subset of the uplink subframe of the primary scheduling carrier will be described. In addition, since the original timing of the subframe 3 and the subframe 8 of the configuration 0 and the subframe 8 of the configuration 6 make the RTT greater than 10 ms, the cross-carrier scheduling of the aggregated subframe including the configuration 0 or the configuration 6 will be explained.

 In the case where the primary scheduling carrier adopts the uplink and downlink subframe configuration 1 and the scheduled carrier adopts the uplink and downlink subframe configuration 3:

 Table 2 shows the original timing of the primary scheduled carrier and the scheduled carrier, as well as the timing A and timing B of the aggregated carrier. The timing A is a scheme in which the subframe of the scheduled carrier follows the original timing of the overlapping uplink subframe of the primary scheduling carrier, and the timing B is a scheme in which the subframe of the scheduled carrier follows the original timing of the scheduled carrier.

 Table 2:

 Subframe 0 1 2 3 4 5 6 7 8 9 Configuration

Original 1 4(-6) 6(-4) 4(-6) 6(-4)

具体地， 根据时序 A: 由主调度载波在上一周期的子帧 6调度被调度 载波的本周期的子帧 2, 由主调度载波在上一周期的子帧 9调度被调度载 波的本周期的子帧 3 , 由主调度载波在本周期的子帧 0调度被调度载波的 本周期的子帧 4; 由主调度载波在本周期的子帧 6对被调度载波的本周期 的子帧 2进行 PHICH确认， 由主调度载波在本周期的子帧 9对被调度载 波的本周期的子帧 3进行 PHICH确认， 由主调度载波在下一周期的子帧 0对被调度载波的本周期的子帧 4进行 PHICH确认。

Specifically, according to the sequence A: the subframe 2 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 6 of the previous period, and the primary scheduling carrier schedules the current period of the scheduled carrier in the subframe 9 of the previous period. Subframe 3, the subframe 4 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in subframe 0 of the current period; the subframe 2 of the current period of the scheduled carrier by the primary scheduling carrier in the subframe 6 of the current period Performing PHICH confirmation, the primary scheduling carrier performs PHICH confirmation on the subframe 3 of the current period of the scheduled carrier in the subframe 9 of the current cycle, and the primary scheduling carrier is in the subframe 0 of the next cycle to the child of the scheduled carrier. Frame 4 performs PHICH confirmation.

 According to the timing B: the difference from the timing A is that if the original timing of the modulated carrier is followed, the primary scheduling carrier needs to perform the subframe 2 of the current period of the scheduled carrier in the subframe 8 of the previous period. Scheduling is performed, and subframe 8 of the primary scheduling carrier is an uplink subframe, so timing B is not feasible for subframe 2 of the scheduled carrier.

 Therefore, according to the present embodiment, the aggregate carrier is subjected to cross-carrier scheduling using the timing A shown in Table 2.

 In the case where the primary scheduling carrier adopts the uplink and downlink subframe configuration 3 and the scheduled carrier adopts the uplink and downlink subframe configuration 1:

Table 3 shows the original timing of the primary scheduled carrier and the scheduled carrier, as well as the timing A, timing B, timing C, and timing D of the aggregated carrier. The timing A is a new configuration timing of the subframes of the overlapping uplink subframe carriers of the scheduled carrier, and the timing B is a scheme for setting the newly defined timing of the overlapping subframes of the scheduled carriers, and the timing C is the scheduled carrier. The overlapping uplink subframes follow a scheme in which the primary scheduling carrier sets a new defined timing. The timing D is that the overlapping uplink subframe of the scheduled carrier follows the original timing of the scheduled carrier, and the subframe 8 of the scheduled carrier follows the subframe of the scheduled carrier. Configure a scenario for newly defined timing.

具体地， 根据时序 A: 由主调度载波在上一周期的子帧 8调度被调度 载波的本周期的子帧 2, 由主调度载波在上一周期的子帧 9调度被调度载 波的本周期的子帧 3， 由主调度载波在本周期的子帧 1调度被调度载波的 本周期的子帧 7， 由主调度载波在本周期的子帧 1调度被调度载波的本周 期的子帧 8; 由主调度载波在本周期的子帧 8对被调度载波的本周期的子 帧 2进行 PHICH确认， 由主调度载波在本周期的子帧 9对被调度载波的 本周期的子帧 3进行 PHICH确认， 由主调度载波在下一周期的子帧 1对 被调度载波的本周期的子帧 7进行 PHICH确认， 由主调度载波在下一周 期的子帧 5~9或者在下面第二个周期的子帧 0~1对被调度载波的本周期的 子帧 8进行 PHICH确认。

Specifically, according to the sequence A: the subframe 2 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 8 of the previous period, and the primary scheduling carrier schedules the current period of the scheduled carrier in the subframe 9 of the previous period. Subframe 3, the main scheduling carrier schedules the subframe 7 of the current period of the scheduled carrier in the subframe 1 of the current period, and the primary scheduling carrier schedules the subframe 8 of the current period of the scheduled carrier in the subframe 1 of the current period. The primary scheduling carrier performs PHICH acknowledgment on the subframe 2 of the scheduled carrier in the subframe 8 of the current period, and the primary scheduling carrier performs the subframe 3 of the current period of the scheduled carrier in the subframe 9 of the current period. The PHICH confirms that the primary scheduling carrier performs PHICH acknowledgment on the subframe 7 of the current period of the scheduled carrier in the subframe 1 of the next cycle, and the primary scheduling carrier is in the next period of the subframe 5~9 or in the second period below. Subframes 0~1 perform PHICH confirmation on subframe 8 of the current cycle of the scheduled carrier.

 The difference between the timing B and the timing A is that the subframe 2 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 6 of the previous period, and the primary scheduling carrier is scheduled in the subframe 6 of the current period. The subframe 2 of the current cycle of the carrier performs PHICH confirmation.

The difference between timing C and timing A and the difference between timing D and timing B are: The carrier performs PHICH acknowledgment on the subframe 8 of the current cycle of the scheduled carrier in the subframe 4 of the next cycle, so that the RTT of the uplink subframe can be reduced from 20 ms to 10 ms.

 According to this embodiment, the aggregate carrier can be cross-carrier scheduled using any of the timings A, B, C, and D shown in Table 3.

 In the case where the primary scheduling carrier adopts the uplink and downlink subframe configuration 2 and the scheduled carrier adopts the uplink and downlink subframe configuration 3:

 Since the original timing of the overlapping uplink subframes of the primary scheduling carrier and the scheduled carrier is the same, the timing A is indicated in Table 4 except for the original timing. For overlapping uplink subframes, the timing can be considered as following the scheduled scheduling. Carrier The original timing of the subframe can also be considered as the original timing of the corresponding subframe following the primary scheduled carrier.

具体地， 根据时序 A: 由主调度载波在上一周期的子帧 8调度被调度 载波的本周期的子帧 2， 由主调度载波在上一周期的子帧 9调度被调度载 波的本周期的子帧 3， 由主调度载波在本周期的子帧 0调度被调度载波的 本周期的子帧 4; 由主调度载波在本周期的子帧 8对被调度载波的本周期 的子帧 2进行 PHICH确认， 由主调度载波在本周期的子帧 9对被调度载 波的本周期的子帧 3进行 PHICH确认， 由主调度载波在下一周期的子帧 0对被调度载波的本周期的子帧 4进行 PHICH确认。

Specifically, according to the sequence A: the subframe 2 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 8 of the previous period, and the primary scheduling carrier schedules the current period of the scheduled carrier in the subframe 9 of the previous period. Subframe 3, the main scheduling carrier schedules the subframe 4 of the current period of the scheduled carrier in the subframe 0 of the current period; the subframe 2 of the current period of the scheduled carrier in the subframe 8 of the current scheduling by the primary scheduling carrier Performing PHICH confirmation, the primary scheduling carrier performs PHICH confirmation on the subframe 3 of the current period of the scheduled carrier in the subframe 9 of the current cycle, and the primary scheduling carrier is in the subframe 0 of the next cycle to the child of the scheduled carrier. Frame 4 performs PHICH confirmation.

 According to this embodiment, the aggregate carrier can be cross-carrier scheduled using the timing A shown in Table 4.

In the case where the primary scheduling carrier adopts the uplink and downlink subframe configuration 3 and the scheduled carrier adopts the uplink and downlink subframe configuration 2: Table 5 shows the original timing and timing A. For overlapping uplink subframes, timing A can be considered to follow the original timing of the subframe of the scheduled carrier and can also be considered to follow the corresponding subframe of the primary scheduling carrier. Original timing.

具体地， 根据时序 A: 由主调度载波在上一周期的子帧 8调度被调度 载波的本周期的子帧 2， 由主调度载波在本周期的子帧 1调度被调度载波 的本周期的子帧 7; 由主调度载波在本周期的子帧 8对被调度载波的本周 期的子帧 2进行 PHICH确认， 由主调度载波在下一周期的子帧 1对被调 度载波的本周期的子帧 7进行 PHICH确认。

Specifically, according to the sequence A: the subframe 2 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 8 of the previous period, and the primary scheduling carrier schedules the current period of the scheduled carrier in the subframe 1 of the current period. Subframe 7; PHICH acknowledgment is performed on the subframe 2 of the current period of the scheduled carrier by the primary scheduling carrier in the subframe 8 of the current period, and the primary scheduling carrier is in the subframe 1 of the next period to the current period of the scheduled carrier. Frame 7 performs PHICH confirmation.

 According to this embodiment, the aggregate carrier can be cross-carrier scheduled using the timing A shown in Table 5.

 In the case where the primary scheduling carrier adopts the uplink and downlink subframe configuration 2 and the scheduled carrier adopts the uplink and downlink subframe configuration 4:

 Table 6 shows the original timing and timing A. For overlapping uplink subframes, timing A can be considered to follow the original timing of the subframe of the scheduled carrier and can also be considered to follow the corresponding subframe of the primary scheduling carrier. Original timing.

 Table 6:

具体地， 根据时序 A: 由主调度载波在上一周期的子帧 8调度被调度 载波的本周期的子帧 2, 由主调度载波在上一周期的子帧 9调度被调度载 波的本周期的子帧 3; 由主调度载波在本周期的子帧 8对被调度载波的本 周期的子帧 2进行 PHICH确认， 由主调度载波在本周期的子帧 9对被调 度载波的本周期的子帧 3进行 PHICH确认。

Specifically, according to the sequence A: the subframe 2 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 8 of the previous period, and the primary scheduling carrier schedules the current period of the scheduled carrier in the subframe 9 of the previous period. Subframe 3; PHICH acknowledgment is performed on the subframe 2 of the current period of the scheduled carrier by the primary scheduling carrier in the subframe 8 of the current period, and the primary scheduling carrier is in the subframe 9 of the current period for the current period of the scheduled carrier. Subframe 3 performs PHICH confirmation.

 According to this embodiment, the aggregate carrier can be cross-carrier scheduled using the timing A shown in Table 6.

 In the case where the primary scheduling carrier adopts the uplink and downlink subframe configuration 4 and the scheduled carrier adopts the uplink and downlink subframe configuration 2:

 Table 7 shows the original timing and timing A. For overlapping uplink subframes, the timing can be considered as following the original timing of the subframe of the scheduled carrier and can also be considered as following the corresponding subframe of the primary scheduling carrier. Original timing.

具体地， 根据时序 A: 由主调度载波在上一周期的子帧 8调度被调度 载波的本周期的子帧 2， 由主调度载波在本周期的子帧 1调度被调度载波 的本周期的子帧 7; 由主调度载波在本周期的子帧 8对被调度载波的本周 期的子帧 2进行 PHICH确认， 由主调度载波在下一周期的子帧 1对被调 度载波的本周期的子帧 7进行 PHICH确认。

Specifically, according to the sequence A: the subframe 2 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 8 of the previous period, and the primary scheduling carrier schedules the current period of the scheduled carrier in the subframe 1 of the current period. Subframe 7; PHICH acknowledgment is performed on the subframe 2 of the current period of the scheduled carrier by the primary scheduling carrier in the subframe 8 of the current period, and the primary scheduling carrier is in the subframe 1 of the next period to the current period of the scheduled carrier. Frame 7 performs PHICH confirmation.

According to this embodiment, the aggregate carrier can be cross-carriered using the timing A shown in Table 7. Scheduling

 Next, with reference to Table 8, the case where the scheduled carrier has the uplink and downlink frame configuration 0

表 8列出了被调度载波具有上下行子帧配置 0， 主调度子帧具有上下行 子帧配置 1至 6的情况下的时序（时序 A至 F )， 其中， 在根据上面描述的 规则可以采用多个时序的情况下， 在表中通过 "/" 并列地列出了多种时序。 例如， 在时序 C中， 被调度载波的子帧 2既可以按照其原有时序 "4 ( -6 )" 也可以按照主调度载波的相应子帧的原有时序 "6 ( -4 )"。

Table 8 lists the timing (timing A to F) in the case where the scheduled carrier has the uplink and downlink subframe configuration 0 and the primary scheduling subframe has the uplink and downlink subframe configuration 1 to 6, wherein, in accordance with the above description In the case where the rule can take multiple timings, multiple timings are listed side by side in the table by "/". For example, in timing C, subframe 2 of the scheduled carrier may be either "4 ( -6 )" according to its original timing or "6 ( -4 ) " according to the original timing of the corresponding subframe of the primary scheduling carrier.

 The timing of the subframe 3 and the subframe 8 relating to the scheduled carrier in each sequence in Table 8 will be mainly described below.

 According to the sequence A: the subframe 3 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 9 of the previous period, and the subframe of the scheduled carrier is in the subframe 4 of the current scheduling by the primary scheduling carrier. 8 performing scheduling; the PHICH acknowledgement of the subframe 3 of the current period of the scheduled carrier is performed by the primary scheduling carrier in the subframe 9 of the current period, and the primary scheduling carrier performs the current period of the scheduled carrier in the subframe 4 of the next period. The PHICH of subframe 8 is confirmed.

 According to the sequence B: the subframe 3 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 8 or the subframe 9 of the previous period, and the primary scheduling carrier is in the subframe 3 or the subframe 4 of the current period. The subframe 8 of the scheduled carrier is scheduled in the current cycle; the primary scheduling carrier performs PHICH confirmation on the subframe 3 of the current period of the scheduled carrier in the subframe 8 or the subframe 9 of the current period, and the primary scheduling carrier is in the next cycle. Subframe 3 or subframe 4 performs PHICH acknowledgment for subframe 8 of the current cycle of the scheduled carrier.

 According to the sequence C: the subframe 3 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 9 of the previous period, and the primary scheduling carrier is in the subframe 1 of the current period and the subframe of the scheduled carrier is in the current period. 8 performing scheduling; the PHICH acknowledgement of the subframe 3 of the current period of the scheduled carrier is performed by the primary scheduling carrier in the subframe 9 of the current cycle, and the primary scheduling carrier performs the current cycle of the scheduled carrier in the subframe 5 of the next cycle. The PHICH of subframe 8 is confirmed.

 According to the time series D: the subframe 3 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 9 of the previous period, and the subframe of the scheduled carrier is in the subframe 4 of the current scheduling by the primary scheduling carrier. 8 performing scheduling; the PHICH acknowledgement of the subframe 3 of the current period of the scheduled carrier is performed by the primary scheduling carrier in the subframe 9 of the current period, and the primary scheduling carrier performs the current period of the scheduled carrier in the subframe 4 of the next period. The PHICH of subframe 8 is confirmed.

According to the timing E: the subframe 3 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 7, subframe 8 or subframe 9 of the previous period, and the primary scheduling carrier is in the subframe 3 of the current period or Subframe 4 schedules subframe 8 of the scheduled carrier current cycle; the primary scheduling carrier performs PHICH confirmation on subframe 3 of the current period of the scheduled carrier in subframe 7, subframe 8, or subframe 9 of the current cycle. The PHICH acknowledgment of the subframe 8 of the current cycle of the scheduled carrier is performed by the primary scheduling carrier in subframe 3 or subframe 4 of the next cycle. According to the time series F: the subframe 3 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 9 of the previous period, and the primary scheduling carrier is in the subframe 1 of the current period. The subframe 8 is scheduled; the PHICH acknowledgement of the subframe 3 of the current period of the scheduled carrier is performed by the primary scheduling carrier in the subframe 9 of the current cycle, and the scheduled carrier is performed by the primary scheduling carrier in the subframe 5 of the next cycle. The PHICH of subframe 8 of this cycle is confirmed.

 In addition, for the timing C and the timing D, the primary scheduling carrier may also schedule the subframe 3 of the current period of the scheduled carrier in the subframe 7 or the subframe 8 of the previous period, and the primary scheduling carrier is in the current period. Subframe 7 or subframe 8 performs PHICH acknowledgment for subframe 3 of the current cycle of the scheduled carrier.

 It can be seen that, according to the method of the present embodiment, the cross-carrier scheduling is performed by using the timings A to F in Table 8, and the original timing RTT can be 20 ms of the uplink subframe if the subframe resources permit. The RTT is reduced to 10 ms.

 Next, the timing in the case where the primary scheduling carrier has the uplink and downlink frame configuration 0 will be described with reference to Table 9.

表 9列出了主调度载波具有上下行子帧配置 0， 被调度子帧具有上下行 子帧配置 1至 6的情况下的时序（时序 A至 F )。 与表 8类似地， 在根据上 面描述的规则可以采用多个时序的情况下， 在表中通过 "/"并列地列出了多 种时序。

Table 9 lists the timing (timing A to F) in the case where the primary scheduling carrier has the uplink and downlink subframe configuration 0 and the scheduled subframe has the uplink and downlink subframe configuration 1 to 6. Similarly to Table 8, in the case where a plurality of timings can be employed according to the rules described above, various timings are listed side by side by "/" in the table.

 The timing of the sub-frame 3 and the sub-frame 8 in each sequence in Table 9 will be specifically described below.

 According to the time series A: the subframe 3 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 6 of the previous period, and the primary scheduling carrier is in the subframe 1 of the current period, and the subframe of the scheduled carrier is in the current period. 8 scheduling; performing, by the scheduled carrier, the PHICH of the primary scheduling carrier and the subframe 3 of the current period of the modulated carrier in the subframe 9 of the current period, and the scheduled carrier is performed in the subframe 4 of the next cycle. The PHICH of the subframe 8 of the current cycle of the scheduled carrier and the modulated carrier is acknowledged.

 According to the sequence B: the PHICH acknowledgment of the subframe 3 of the current scheduling carrier is performed by the scheduled carrier in the subframe 8 or the subframe 9 of the current period, and the scheduled carrier is in the subframe 3 or the subframe 4 of the next period. The PHICH confirmation of the subframe 8 of the current cycle of the primary scheduling carrier is performed.

According to the timing C: the subframe 3 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 6 of the previous period; the scheduled carrier is performed in the subframe 7, the subframe 8 or the subframe 9 of the current period. ^"The main scheduling wave and the scheduled sub-g 3 PHICH acknowledgment of the carrier, according to the timing D: by the main scheduling carrier in the subframe 6 of the previous cycle, the sub-period of the scheduled carrier Frame 3 is scheduled; by the scheduled carrier in the subframe 7, subframe 8 or subframe 9 of the current cycle, the "main scheduling wave and the scheduled carrier, the period of the child 3 PHICH confirmation, by the scheduled carrier Timing E: PHICH acknowledgment of subframe 3 of the current scheduling carrier in the current period, in subframe 7, subframe 8 or subframe 9 of the current period, by the scheduled carrier in the next cycle Subframe 3 or subframe 4 performs PHICH acknowledgment for subframe 8 of the current scheduling carrier.

 According to the timing F: the subframe 3 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 6 of the previous period, and the subframe of the scheduled carrier is in the subframe 1 of the current scheduling by the primary scheduling carrier. 8 scheduling; the PHICH acknowledgement of the primary scheduling carrier and the subframe 3 of the scheduled carrier in the current subframe 9 is performed by the scheduled carrier, and the primary scheduling carrier performs the primary scheduling in the subframe 5 of the next cycle. The PHICH of the carrier and the subframe 8 of the current carrier of the scheduled carrier is acknowledged.

 In addition, as shown in Table 9, according to the timing F: the subframe 2 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 5 or the subframe 6 of the previous period, and the primary scheduling carrier is in the current period. Subframe 0 schedules the subframe 4 of the scheduled carrier current period, and the primary scheduling carrier schedules the subframe 7 of the scheduled carrier current period in subframe 0 or subframe 1 of the current period.

 It can be seen that the method according to this embodiment performs cross-carrier scheduling by using timings A to F in Table 9, and can perform PHICH confirmation on the scheduled carrier if the subframe resources of the scheduled carrier are allowed. (including PHICH acknowledgment for the uplink subframe of the primary scheduling carrier and the uplink subframe of the scheduled carrier) to reduce the RTT of the uplink subframe with the original timing RTT of 20 ms to

10 ms.

 Next, the timing in the case where the scheduled carrier has the uplink and downlink frame configuration 6 will be described with reference to Table 10.

 Table 10:

由于主调度载波为上下行子帧配置 0的情况已经在上面说明过， 因此表 10中列出了被调度载波具有上下行帧配置 6, 主调度载波采用上下行子帧配 置 1至 5的情况下的时序 A-E。 其中， 在根据本发明不同实施例可以采用多 个时序的情况下， 在表中通过 "/" 并列地列出了多种时序。

Since the case where the primary scheduling carrier is 0 for the uplink and downlink subframes has been described above, the scheduled carrier has the uplink and downlink frame configuration 6 and the primary scheduling carrier adopts the uplink and downlink subframe configuration 1 to 5. Timing AE below. Wherein, in the case where a plurality of timings can be employed in accordance with different embodiments of the present invention, various timings are listed in parallel by "/" in the table.

 The timing of the subframe 3 and the subframe 8 related to the scheduled carrier in each sequence in the table 10 will be specifically described below.

 According to the time series A: the subframe 3 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 6 or the subframe 9 of the previous period, and the primary scheduling carrier is in the subframe 1 or the subframe 4 of the current period. Scheduling in the subframe 8 of the scheduled carrier; the PHICH acknowledgement of the subframe 3 of the current period of the scheduled carrier is performed by the primary scheduling carrier in the subframe 9 of the current cycle, and the primary scheduling carrier is in the subframe 4 of the next cycle. PHICH acknowledgment for subframe 8 of the current cycle of the scheduled carrier is performed.

 According to the sequence B: the subframe 3 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 6, subframe 8 or subframe 9 of the previous period, and the primary scheduling carrier is in the subframe 1 of the current cycle. Subframe 3 or subframe 4 schedules subframe 8 of the scheduled carrier current period; the primary scheduling carrier performs PHICH acknowledgement on subframe 3 of the current period of the scheduled carrier in subframe 9 of the current cycle, by master scheduling The carrier performs PHICH confirmation on the subframe 8 of the current cycle of the scheduled carrier in subframe 3 or subframe 4 of the next cycle.

 According to the sequence C: the subframe 3 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 6 or the subframe 9 of the previous period, and the scheduled carrier is in the subframe 1 of the current scheduling carrier by the primary scheduling carrier. The subframe 8 of the period is scheduled; the PHICH acknowledgement of the subframe 3 of the current period of the scheduled carrier is performed by the primary scheduling carrier in the subframe 9 of the current cycle, and the primary scheduling carrier performs scheduling on the subframe 5 of the next cycle. PHICH acknowledgement of subframe 8 of this cycle of the carrier.

According to the timing D: the subframe 3 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 6 or the subframe 9 of the previous period, and the primary scheduling carrier is in the subframe 1 or the subframe 4 of the current period. Scheduling in subframe 8 of the scheduled carrier; performing scheduling on subframe 9 of the current cycle by the primary scheduling carrier The PHICH of the subframe 3 of the current cycle of the scheduled carrier is confirmed, and the primary scheduling carrier performs PHICH confirmation on the subframe 8 of the current cycle of the scheduled carrier in the subframe 4 of the next cycle.

 According to the time series E: the subframe 3 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 6 or the subframe 9 of the previous period, and the primary scheduling carrier is in the subframe 1 and the subframe 3 of the current period. The subframe 4 performs scheduling on the subframe 8 of the scheduled carrier current period; the primary scheduling carrier performs PHICH confirmation on the subframe 3 of the current period of the scheduled carrier in the subframe 9 of the current period, and the primary scheduling carrier is in the next cycle. Subframe 3 or subframe 4 performs PHICH acknowledgment for subframe 8 of the current cycle of the scheduled carrier.

 In addition, as shown in Table 10, when the downlink carrier configuration 6 is used for the mobility carrier, if the downlink subframe resource of the primary scheduling carrier allows, the subframe 2, 3 of the scheduled carrier is configured by the primary scheduling carrier. Scheduling one or more of 4, 7, and 8 to obtain an uplink scheduling delay of the one or more subframes less than 7 ms, or to delay the scheduling delay of subframe 4 by 5 ms It is 4 ms. For example, if the downlink subframe resource of the primary group carrier is allowed, the subframe 2 of the current period of the scheduled carrier may be scheduled by the subframe 8 of the previous period of the primary scheduling carrier, and the previous period of the primary scheduling carrier. The subframe 9 schedules the subframe 3 of the current period of the scheduled carrier, and the subframe 4 of the current period of the scheduled carrier is scheduled by the subframe 0 of the current scheduled carrier, and the subframe 1 of the current period of the primary scheduling carrier or The subframe 3 schedules the subframe 7 of the scheduled carrier current period, and the subframe 8 of the current period of the scheduled carrier is scheduled by the subframe 3 or the subframe 4 of the current scheduling carrier.

 It can be seen that the method according to this embodiment of the present application can perform the cross-carrier scheduling by using the timings A to F in Table 10, and can convert the RTT of the original timing to the RTT of the uplink subframe of 20 ms when the subframe resources permit. Reduced to 10 ms.

 Next, the timing in the case where the main scheduling carrier has the uplink and downlink frame configuration 6 will be described with reference to Table 11.

 Table 11:

由于被调度载波为上下行子帧配置 0的情况已经在上面说明过， 因此表 11中列出了主调度载波具有上下行帧配置 6， 被调度载波采用上下行子帧配 置 1至 5的情况下的时序 A-E。 其中， 在根据本发明不同实施例可以采用多 个时序的情况下， 在表中通过 "/" 并列地列出了多种时序。

Since the case where the scheduled carrier is configured as 0 for the uplink and downlink subframes has been described above, the primary scheduling carrier has the uplink and downlink frame configuration 6 and the scheduled carrier uses the uplink and downlink subframe configuration 1 to 5 in Table 11. Timing AE below. Wherein, in the case where a plurality of timings can be employed in accordance with different embodiments of the present invention, various timings are listed in parallel by "/" in the table.

 The timing of the subframe 3 and the subframe 8 relating to the buffered carrier in each sequence in Table 11 will be specifically described below.

 According to the time series A: the subframe 3 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 6 or the subframe 9 of the previous period, and the scheduled carrier is in the subframe 1 of the current scheduling carrier by the primary scheduling carrier. The subframe 8 of the cycle is scheduled; the PHICH acknowledgement of the subframe 3 of the current period of the scheduled carrier is performed by the primary scheduling carrier in the subframe 9 of the current cycle, and the scheduled scheduling is performed on the scheduled subframe in the subframe 4 of the next cycle. The PHICH of the carrier and the subframe 8 of the current carrier of the scheduled carrier is acknowledged.

 According to the sequence B: the PHICH acknowledgment of the subframe 3 of the current scheduling carrier is performed by the primary scheduling carrier in the subframe 9 of the current period, and the scheduled scheduling is performed on the subframe 3 or the subframe 4 of the next period by the scheduled carrier. PHICH acknowledgement of subframe 8 of this cycle of the carrier.

According to the timing C: the subframe 3 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 6 or the subframe 9 of the previous period; the primary scheduling carrier performs the primary scheduling carrier in the subframe 9 of the current period. The PHICH of the subframe 3 of the current cycle of the scheduled carrier is confirmed, and the primary scheduling carrier performs PHICH confirmation on the subframe 8 of the current scheduling carrier in the subframe 5 of the next cycle. According to the time series D: the subframe 3 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in the subframe 6 or the subframe 9 of the previous period; the primary scheduling carrier performs the primary scheduling carrier in the subframe 9 of the current period. The PHICH of the subframe 3 of the current cycle of the scheduled carrier is confirmed, and the scheduled carrier performs the PHICH check on the subframe 8 of the current scheduling carrier in the next cycle of the subframe 4.

 According to the timing E: the PHICH acknowledgment of the subframe 3 of the current scheduling carrier is performed by the primary scheduling carrier in the subframe 9 of the current period, and the scheduled scheduling is performed on the subframe 3 or the subframe 4 of the next cycle by the scheduled carrier. PHICH acknowledgement of subframe 8 of this cycle of the carrier.

 In addition, as shown in Table 11, in the case where the primary scheduling carrier adopts the uplink and downlink subframe configuration 6, the scheduled carrier can retain the original scheduling timing. For example, the subframe 2 of the current period of the scheduled carrier (configuration 1) may be scheduled by the primary scheduling carrier in the subframe 6 of the previous period, and the scheduled carrier may be used by the primary scheduling carrier in the subframe 0 of the current period ( The subframe 4 of the current period of configuration 3) is scheduled, and the primary scheduling carrier may schedule the subframe 7 of the current period of the scheduled carrier (configuration 1) in the previous subframe 1 of the current period.

 It can be seen that the method according to this embodiment of the present application performs cross-carrier scheduling by using timings A to E in Table 11, and is capable of performing PHICH confirmation on the scheduled carrier if the subframe resources of the scheduled carrier are allowed ( Including the PHICH acknowledgement of the uplink subframe of the primary scheduling carrier and the uplink subframe of the scheduled carrier) to reduce the RTT of the uplink subframe with the original timing RTT of 20 ms to 10 mso

 It should be noted that the cross-carrier scheduling method according to the present application can be implemented in different ways. For example, the timing may be determined according to the method in the process of performing communication and the HARQ scheduling/initial transmission/PHICH confirmation/failure retransmission may be performed according to the timing; the timing may be determined in advance according to the method of the present invention and stored as a lookup table (eg, including a table) 2 to the timing information shown in Table 11), and in the process of performing communication, the base station and the communication terminal perform HARQ scheduling/initial transmission/PHICH confirmation/failure retransmission according to a predetermined timing, for example, by means of table lookup. process. In either case, as long as it is pressed

^Process: 'It is considered to be implementing the cross-carrier scheduling method according to the present application. ,

A communication method using an aggregated carrier according to another embodiment of the present application is described below with reference to FIG. 8, wherein the aggregated carrier is composed of a primary scheduled carrier and a scheduled carrier whose uplink and downlink ratios are inconsistent. In step S810, the base station sends scheduling information to the communication terminal through the primary scheduling carrier. At step S820, the communication terminal transmits data to the base station in response to the scheduling information. At step S830, the base station confirms the transmission. In the case where the initial transmission fails, the communication terminal retransmits the data to the base station in step S840. The base station and the communication terminal perform the scheduling, transmission, acknowledgement, and retransmission based on the timing determined according to the cross-carrier scheduling method. Wherein the base station and the communication terminal can be in different ways Get the above timing. For example, as shown in FIG. 8, the method may further include step S812 and/or step S822, and the base station and the communication terminal may perform the steps determined by the cross-carrier scheduling method according to the embodiment of the present application in steps S822 and S812, respectively. In addition, the base station and the communication terminal can also be scheduled, transmitted, acknowledged and retransmitted, for example.

 According to still another embodiment of the present application, there is provided a communication system using an aggregated carrier, the aggregated carrier being composed of a primary scheduled carrier and a scheduled carrier whose uplink and downlink ratios are inconsistent, the system comprising a base station and a communication terminal. The base station is configured to transmit scheduling information to the communication terminal via the primary scheduling carrier and to acknowledge data transmissions from the communication terminal. The communication terminal is configured to transmit data to the base station in response to scheduling information from the base station, and based on the acknowledgment from the base station, to retransmit the data to the base station as needed. The base station and the communication terminal are configured to perform the scheduling, transmission, acknowledgement, and retransmission based on timing determined according to the cross-carrier scheduling method.

 A communication system according to an embodiment of the present application and a configuration example of a base station and a communication terminal therein will be specifically described below with reference to FIG.

 As shown in FIG. 9, a communication system 900 according to an embodiment of the present application includes a base station 910 and communication terminals 920, 930, and the like. The base station 910 includes: a scheduling device 912 configured to transmit mobility information to the communication terminal over the primary scheduling carrier; a validation device 914 configured to acknowledge the data transmission from the communication terminal by aggregating the carrier. The scheduling device 912 and the acknowledgment device 914 are configured to: perform the scheduling and acknowledgment based on the timing determined according to the cross-carrier scheduling method according to the embodiment of the present application described above.

 The communication terminal 920 will be taken as an example to describe the communication terminal. Communication terminal 920 includes: transmission device 922 configured to transmit data to the base station in response to scheduling information from the base station, and to retransmit data to the base station as needed based on acknowledgments from the base station for the transmission. The transmission device 922 is configured to perform the above transmission and retransmission based on the timing determined according to the cross-carrier scheduling method according to the embodiment of the present application described above. The base station 910 and the communication terminals 920, 930, etc. can be obtained in different manners according to the above timing. For example, as shown in FIG. 9, the base station 910 and the communication terminals 920, 930 may further include timing determining means 916, 926, 936. The timing determining means 916, 926, 936 may be configured as cross-carrier scheduling according to embodiments of the present application. The method determines the timing. In addition, the base station 910 and the communication terminals 920, 930 can also perform scheduling, transmission, acknowledgment, and retransmission according to the timing determined in advance by the cross-carrier scheduling method according to the embodiment of the present application, for example, by looking up a table.

Those skilled in the art will recognize that the application can be embodied as an apparatus, method, or computer program product. Therefore, the present application can be embodied in the following form, that is, it can be complete hardware, Complete software (including firmware, resident software, microcode, etc.), or a combination of software and hardware components. In addition, the present application can take the form of a computing sequence product embodied in any tangible expression medium containing computer-available program code.

 Any combination of one or more computer readable shields can be used. The computer readable medium can be a computer readable signal medium or a computer readable storage medium, such as, but not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor. A system, device, device or propagation shield, or any suitable combination of the foregoing. More specific examples (non-exhaustive lists) of computer readable storage media include: electrical connections having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read only memory (ROM), Erasable programmable read only memory (EPROM or flash), optical fiber, portable compact disk read only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that contains or stores a program for use by or in connection with an instruction execution system, apparatus, or device.

 Computer program code for performing the operations of the present application can be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C++, and the like. Also included are conventional procedural programming languages such as the "C" programming language or similar programming languages. The program code can be executed entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer, partly on a remote computer, or entirely on a remote computer or server. carried out. In the latter case, the remote computer can be connected to the user's computer via any kind of network, including a local area network (LAN) or wide area network (WAN), or can be connected to the outside (eg, via an Internet using an Internet service provider) computer.

 In an exemplary structure 1000 of a computer implementing the method and apparatus of the present application illustrated in FIG. 10, a central processing unit (CPU) 1001 is loaded from a stored program in a read only memory (ROM) 1002 or from a storage portion 1008 to a random The program accessing the memory (RAM) 1003 performs various processes. In the RAM 1003, data required when the CPU 1001 executes various processes and the like is also stored as needed.

 The CPU 1001, the ROM 1002, and the RAM 1003 are connected to each other via a bus 1004. Input/output interface 1005 is also coupled to bus 1004.

The following components are connected to the input/output interface 1005: an input portion 1006 including Jt, a mouse, etc.; an output portion 1007 including a display such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage portion 1008 , including a hard disk, etc.; and a communication portion 1009, including a network Network interface cards such as LAN cards, modems, etc. The communication section 1009 performs communication processing via a network such as the Internet.

 The drive 1010 is also connected to the input/output interface 1005 as needed. The removable medium 1011 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory or the like is mounted on the drive 1010 as needed, so that the calculations read therefrom are installed into the storage portion 1008 as needed.

 In the case where the above steps and processing are implemented by software, a program constituting the software is installed from a network such as the Internet or a storage medium such as the removable medium 1011.

 It will be understood by those skilled in the art that such a storage medium is not limited to the removable medium 1011 shown in Fig. 10 in which a program is stored and distributed separately from the method to provide a program to a user. Examples of the removable medium 1011 include a magnetic disk, an optical disk (including a compact disk read only memory (CD-ROM) and a digital versatile disk (DVD)), a magneto-optical disk (including a mini disk (MD)), and a semiconductor memory. Alternatively, the storage medium may be ROM 1002, ^: or the like included in the storage portion 1008, in which programs are stored, and distributed to the user together with the method including them.

 The corresponding structures, operations, and equivalents of all functionally defined devices or steps in the claims are intended to include any structure or operation for performing the function in combination with other elements specified in the claims. The illustrations of the present application are intended to be illustrative and not to be exhaustive, and are not intended to limit the invention. It will be apparent to those skilled in the art that many modifications and variations can be made without departing from the scope and spirit of the invention. The embodiment was chosen and described in order to best explain the principles of the invention and the application of the embodiments of the invention. Implementation.

I

Claims

 Claim A method for performing cross-carrier scheduling on an aggregated carrier, where the aggregated carrier is composed of a primary scheduling carrier and a scheduled carrier whose inconsistent uplink and downlink subframes are matched, and the method includes: Uplink subframe:  If the corresponding subframe of the primary scheduling carrier is also an uplink subframe, the original HARQ scheduling/initial transmission/PHICH acknowledgement/failure retransmission according to the uplink subframe of the scheduled carrier and the corresponding uplink subframe of the primary scheduling carrier. One of the possible timings in the timing is for the HARQ scheduling/transmission/PHICH confirming iA/failed retransmission operation for the uplink subframe of the scheduled carrier;  If the corresponding subframe of the primary scheduling carrier is not an uplink subframe, the original HARQ scheduling/initial transmission/PHICH acknowledgement/failure retransmission timing of the uplink subframe following the scheduled carrier is feasible, initial transmission/PHICH confirmation,/failure Operation of retransmission; otherwise, performing HARQ scheduling/initial transmission on the uplink subframe of the mobility carrier by using a newly defined HARQ scheduling/initial transmission/PHICH acknowledgment/failure retransmission timing according to the subframe configuration of the aggregated carrier PHICH does iA/failed retransmission operation. 2. The method of claim 1 further comprising:  For the HARQ scheduling/initial transmission/PHICH acknowledgment/failure retransmission timing in the scheduled carrier, the uplink subframe of the radio frame period whose initial transmission to the retransmission time interval exceeds 10 ms:  If the corresponding subframe of the primary scheduling carrier is also an uplink subframe, and the original HARQ scheduling/initial transmission/PHICH of the corresponding uplink subframe is the iA/failed retransmission timing, the initial transmission to the retransmission interval is 10 ms. For the radio frame period, the HARQ scheduling/initial transmission/PHICH is performed on the uplink subframe of the scheduled carrier according to the original HARQ scheduling/initial transmission/PHICH acknowledgement/failure retransmission timing of the corresponding uplink subframe of the primary scheduling carrier. /Failed retransmission operation; If the corresponding subframe of the primary scheduling carrier is not an uplink subframe, if the downlink subframe resource of the primary scheduling carrier is allowed, the newly defined HARQ scheduling/initial is configured according to the subframe configuration of the primary scheduling carrier. Passing/PHICH confirms that the iA/failed retransmission timing performs an operation of HARQ scheduling/initial transmission/PHICH acknowledgment/fail retransmission on the uplink subframe of the scheduled carrier, so that the initial transmission of the uplink subframe of the scheduled carrier is heavy The radio frame period is 10 ms. 3. The method of claim 1 further comprising:  In the case of the original HARQ scheduling/transmission/confirmation iA/retransmission timing of the uplink subframe of the primary scheduling carrier, the time interval from the initial transmission to the retransmission of the uplink subframe exceeds 10 ms in the radio frame period:  If the downlink subframe resource of the scheduled carrier is allowed, the PHICH acknowledgement sequence is newly configured according to the subframe configuration of the scheduled carrier, and the PHICH acknowledgement is performed on the uplink subframe of the primary scheduling carrier on the downlink subframe of the scheduled carrier. The time interval from the initial transmission to the retransmission of the uplink subframe of the primary scheduling carrier is 10 ms, and the PHICH signaling of the other uplink subframes of the primary scheduling carrier is still transmitted on the primary scheduling carrier. 4. The method of claim 2, further comprising:  For the HARQ scheduling/initial transmission/PHICH acknowledgment/failure retransmission timing in the scheduled carrier, the uplink subframe of the radio frame period whose initial transmission to the retransmission time interval exceeds 10 ms:  If the downlink subframe resource of the scheduled carrier is allowed, the PHICH acknowledgement sequence is newly configured according to the subframe configuration of the scheduled carrier, and the uplink subframe of the scheduled carrier is subjected to PHICH on the downlink subframe of the scheduled carrier. The acknowledgment is such that the time interval from the initial transmission to the retransmission of the uplink subframe of the scheduled carrier is 10 ms, and the PHICH signaling of the other uplink subframes of the scheduled carrier is still transmitted on the primary scheduling carrier. The method according to claim 1, wherein, in the case that the primary scheduling carrier adopts the uplink and downlink subframe configuration 3 and the scheduled carrier adopts the uplink and downlink subframe configuration 1 :  Scheduling the subframe 8 of the current period of the scheduled carrier by the primary scheduling carrier in subframe 1 of the current cycle;  Transmitting, by the primary scheduling carrier, the subframe of the period of the modulated carrier in any of subframes 5, 6, 7, 8, 9 of the next cycle and subframes 0, 1 in the second cycle below Frame 8 PHICH confirmed. The method according to claim 1 or 4, wherein, in the case that the primary scheduling carrier adopts the uplink and downlink subframe configuration 3 and the scheduled carrier adopts the uplink and downlink subframe configuration 1 : Scheduling the subframe 8 of the current period of the scheduled carrier by the primary scheduling carrier in subframe 1 of the current cycle; as well as  The PHICH of the subframe 8 of the current cycle of the scheduled carrier is transmitted by the scheduled carrier in the subframe 4 of the next cycle. The method according to claim 1, wherein, in the case that the primary scheduling carrier adopts the uplink and downlink subframe configuration 3 or 4 and the scheduled carrier adopts the uplink and downlink subframe configuration 2:  Scheduling the subframe 7 of the current period of the scheduled carrier by the primary scheduling carrier in subframe 1 of the current cycle;  The PHICH acknowledgement of the subframe 7 of the current cycle of the scheduled carrier is transmitted by the primary scheduling carrier in the subframe 1 of the next cycle. The method according to claim 1 or 2, wherein, if the scheduled carrier adopts the uplink and downlink subframe configuration 0, if the primary scheduling carrier and the subframe 3 or the subframe 8 in the buffered carrier overlap For the uplink subframe, the HARQ scheduling/initial transmission/PHICH acknowledgement/failure is performed on the subframe 3 or the subframe 8 of the buffered carrier by using the original scheduling carrier original HARQ scheduling/initial transmission/PHICH confirmation/failure retransmission timing. Retransmission operation. The method according to claim 8, wherein, in the case that the primary scheduling carrier adopts the uplink and downlink subframe configuration 2 and the scheduled carrier adopts the uplink and downlink subframe configuration 0:  The subframe 3 of the current period of the scheduled carrier is scheduled by the primary scheduling carrier in subframe 8 or subframe 9 of the previous period; the PHICH acknowledgement of subframe 3; subframe 8;  The PHICH acknowledgement of the subframe 8 of the current cycle of the scheduled carrier is transmitted by the primary scheduling carrier in subframe 3 or subframe 4 of the next cycle. The method according to claim 8, wherein, in the case that the primary scheduling carrier adopts the uplink and downlink subframe configuration 4 and the scheduled carrier adopts the uplink and downlink subframe configuration 0: Scheduling the subframe 8 of the current period of the scheduled carrier by the primary scheduling carrier in subframe 4 of the current cycle;  The PHICH acknowledgement of the subframe 8 of the current cycle of the scheduled carrier is transmitted by the primary scheduling carrier in the subframe 4 of the next cycle. The method according to claim 8, wherein, in the case that the primary scheduling carrier adopts the uplink and downlink subframe configuration 5 and the scheduled carrier adopts the uplink and downlink subframe configuration 0:  Scheduling the subframe 3 of the current period of the scheduled carrier by the primary scheduling carrier in the subframe 7, 8, or 9 of the previous period;  The PHICH acknowledgement of subframe 3 of the current period of the scheduled carrier is transmitted by the primary scheduling carrier in subframes 7, 8, or 9 of the current cycle; subframe 8;  The PHICH acknowledgement of the subframe 8 of the current cycle of the scheduled carrier is transmitted by the primary scheduling carrier in subframe 3 or subframe 4 of the next cycle. The method according to claim 8, wherein, in the case that the primary scheduling carrier adopts the uplink and downlink subframe configuration 6 and the scheduled carrier adopts the uplink and downlink subframe configuration 0:  Scheduling the subframe 3 of the current period of the scheduled carrier by the primary scheduling carrier in the subframe 9 of the previous period;  The PHICH acknowledgement of the subframe 3 of the current cycle of the scheduled carrier is transmitted by the primary scheduling carrier in subframe 9 of the current cycle. The method according to claim 3, wherein, in the case that the primary scheduling carrier adopts the uplink and downlink subframe configuration 0:  If the scheduled carrier adopts uplink and downlink subframe configuration 3, configuration 4 or configuration 5, the PHICH of the subframe 3 of the current scheduling carrier of the primary scheduling carrier is transmitted by the scheduled carrier in one of the subframes 7 to 9 of the current period; If the scheduled carrier adopts the uplink and downlink subframe configuration 2, the PHICH of the subframe 3 of the current scheduling carrier of the primary scheduling carrier is transmitted by the scheduled carrier in the subframe 8 or the subframe 9 of the current cycle; and If the scheduled carrier adopts the uplink and downlink subframe configuration 1 or the configuration 6, the PHICH of the subframe 3 of the current scheduling carrier of the primary scheduling carrier is transmitted by the scheduled carrier in the subframe 9 of the current period. The method according to claim 4, wherein, in the case that the primary scheduling carrier adopts the uplink and downlink subframe configuration 0:  If the scheduled carrier adopts uplink and downlink subframe configuration 3 or configuration 4, the PHICH of the subframe 3 of the current period of the scheduled carrier is transmitted by the scheduled carrier in one of the subframes 7 to 9 of the current period;  If the scheduled carrier adopts uplink and downlink subframe configuration 1 or configuration 6, the scheduled carrier transmits the PHICH of the subframe 3 of the scheduled carrier in the subframe 9 of the current period. The method according to claim 1 or 2, wherein, in the case where the scheduled carrier adopts the uplink and downlink subframe configuration 0 or the configuration 6:  If the primary scheduling carrier adopts the uplink and downlink subframe configuration 1 or 4, the subframe 4 of the current period of the scheduled carrier is scheduled by the subframe 4 of the current scheduling carrier; and the subframe of the next periodicity of the primary scheduling carrier 4 transmitting a PHICH acknowledgement of subframe 8 of the current cycle of the scheduled carrier;  If the primary scheduling carrier adopts the uplink and downlink subframe configuration 2 or 5, the subframe 8 of the current period of the scheduled carrier is scheduled by the subframe 3 or the subframe 4 of the current scheduling carrier; and the next scheduled carrier The subframe 3 or subframe 4 of the period transmits the PHICH acknowledgement of the subframe 8 of the current cycle of the scheduled carrier. The method according to claim 3, wherein, in the case that the primary scheduling carrier adopts uplink and downlink subframe configuration 0 or configuration 6,  If the scheduled carrier adopts the uplink and downlink subframe configuration 1 or 4, the PHICH of the subframe 8 of the current scheduling carrier of the primary scheduling carrier is transmitted by the scheduled carrier in the next periodic subframe 4; and if the scheduled carrier adopts uplink and downlink If the subframe configuration 2 or 5 is transmitted, the PHICH of the subframe 8 of the current scheduling carrier of the primary scheduling carrier is transmitted by the scheduled carrier in subframe 3 or subframe 4 of the next cycle. The method according to claim 4, wherein the primary scheduling carrier adopts uplink and downlink sub-subjects In the case of frame configuration 0 or 6:  If the scheduled carrier adopts the uplink and downlink subframe configuration 1, the scheduled carrier transmits the PHICH of the subframe 8 of the current period of the scheduled carrier in the subframe 4 of the next cycle. The method according to claim 1 or 2, wherein, in the case that the mobility carrier adopts the uplink and downlink subframe configuration 6, if the downlink subframe resource of the primary scheduling carrier allows, the primary scheduling carrier pair is blocked. One or more of the subframes 2, 3, 4, 7, and 8 of the degree carrier are scheduled such that the uplink scheduling delay of the one or more subframes is less than 7 ms and greater than or equal to 4 ms, or the subframe is made The scheduling delay of 4 is reduced from 5 ms to 4 ms.  The method according to claim 1 or 2, wherein, in the case that the primary scheduling carrier adopts the uplink and downlink subframe configuration 6, the scheduled carrier retains the original scheduling sequence. A communication method using an aggregated carrier, where the aggregated carrier is composed of a primary scheduling carrier and a buffered carrier that do not have an uplink/downlink ratio, the method comprising:  Transmitting, by the base station, scheduling information to the communication terminal by using the primary scheduling carrier;  Transmitting, by the communication terminal, data to the base station in response to the scheduling information;  The base station confirms the transmission;  The communication terminal retransmits data to the base station, if necessary, based on the acknowledgment, wherein the base station and the communication terminal are determined based on the timing according to the method of any one of claims 1 to 19. The scheduling, transmission, acknowledgment and retransmission are performed. A communication system using an aggregated carrier, where the aggregated carrier is composed of a primary scheduling carrier and a scheduled carrier that do not have an uplink/downlink ratio, the system comprising:  Base station;  Communication terminal,  The base station is configured to send scheduling information to the communication terminal through the primary scheduling carrier, and confirm data transmission from the communication terminal; Wherein the communication terminal is configured to respond to the scheduling information from the base station Transmitting data by the base station, and retransmitting data to the base station if needed based on the acknowledgment from the base station; and  The base station and the communication terminal are configured to perform the scheduling, transmission, acknowledgment and retransmission based on the timing determined by the method according to any one of claims 1 to 19. A base station, configured to communicate with a communication terminal by using an aggregated carrier, where the aggregated carrier is composed of a primary scheduling carrier and a scheduled carrier whose uplink and downlink ratios are inconsistent, wherein the base station includes:  a scheduling apparatus configured to transmit, by the primary scheduling carrier, a scheduling signal to the communication terminal, a acknowledgment device configured to acknowledge data transmission from the communication terminal by the aggregated carrier,  The scheduling device and the validation device are configured to perform the scheduling and validation based on the timing determined by the method of any one of claims 1-19. A communication terminal, configured to communicate with a base station by using an aggregated carrier, wherein the aggregated carrier is composed of a primary scheduling carrier and a scheduled carrier that are inconsistent in uplink and downlink ratios, wherein the communication terminal includes:  a transmitting device configured to transmit data to the base station in response to scheduling information from the base station, and to retransmit data to the base station if necessary based on an acknowledgment from the base station to the transmission,  The transmission device is configured to perform the data transmission and retransmission based on the timing determined by the method according to any one of claims 1 to 19.