WO2017028754A1

WO2017028754A1 - Carrier aggregation method and device

Info

Publication number: WO2017028754A1
Application number: PCT/CN2016/094918
Authority: WO
Inventors: 栗忠峰; 李华
Original assignee: 华为技术有限公司
Priority date: 2015-08-17
Filing date: 2016-08-12
Publication date: 2017-02-23

Abstract

Disclosed are a carrier aggregation method and device, which are used for further reducing the time delay of communications between a base station and a terminal in combination with carrier aggregation technology. The method comprises: a base station determining a frame configuration of each member carrier of at least two member carriers for carrier aggregation, and determining a frame start time offset of each member carrier of the at least two member carriers, except a reference member carrier, relative to the reference member carrier, wherein the reference member carrier is at least one of the at least two member carriers; and the base station communicating with a terminal through the at least two member carriers.

Description

Carrier aggregation method and device

Technical field

The present invention relates to the field of communications technologies, and in particular, to a carrier aggregation method and device.

Background technique

As the number of intelligent terminal users increases, user traffic and data throughput increase, higher requirements are placed on communication rates. Moreover, due to the shortage of wireless spectrum resources, it is difficult to find continuous large bandwidth for mobile communication. Based on this, a carrier aggregation technology is introduced in the Long Term Evolution-Advanced (LTE-A), that is, multiple continuous or discontinuous spectrum aggregation is used to solve the demand for large bandwidth of mobile communication, and the wireless frequency band is improved. Utilization of scattered spectrum resources.

In the carrier aggregation scenario shown in FIG. 1, the terminal simultaneously communicates with the base station through two component carriers CC1 and CC2. In fact, LTE-A can support aggregation of no more than five component carriers.

At present, there are some applications that require low latency, such as interactive games, intelligent transportation, etc., which place high demands on the delay of wireless communication. Therefore, how to reduce the delay becomes a key issue in communication.

At present, the delay is mainly reduced by reducing the Transmission Time Interval (TTI).

The frame configuration in this document refers to the number of uplink subframes, downlink subframes, and special subframes included in a radio frame, and the relationship between uplink, downlink, and special subframes. The special subframes must include guard time, and may also include Upstream and/or downstream.

Each TTI of LTE is 1 millisecond (ms), and the delay values corresponding to different frame configurations are different, assuming that the processing delay of the uplink base station side is 1.5 ms, and the processing delay of the user side is 1 ms, and the downlink base station side is The processing delay is 1 ms, and the processing delay on the user side is 1.5 ms. The frame alignment delay value is different in different frame configurations. The frame alignment time refers to the waiting time between when the service arrives and when the service can obtain the transmission opportunity of the air interface subframe. The frame configuration 0 is taken as an example. The frame structure corresponding to the frame configuration 0 is as shown in FIG. 2. In the downlink data transmission, when the TTI is 1 ms, the downlink delay of the frame configuration 0 of the LTE is: The processing delay on the station side is 1 ms + the frame alignment delay is 1.7 ms + the processing delay on the user side is 1.5 ms + the duration of one TTI is 1 ms = 5.2 ms.

In the same manner, the delay of the uplink or downlink data transmission in the frame configuration 0 to 6 when the TTI is 1 ms can be determined separately, as shown in Table 1:

Table 1

LTE的帧配置 LTE frame configuration	00	11	22	33	44	55	66
上行时延(ms)Uplink delay (ms)	4.64.6	5.25.2	66	6.86.8	7.67.6	8.58.5	4.94.9
下行时延(ms)Downlink delay (ms)	5.25.2	4.64.6	4.24.2	4.64.6	4.34.3	4.14.1	4.94.9

The LTE-compatible 1 ms downlink subframe is divided into two 0.5 ms downlink subframes, and the LTE 1 ms special subframe is divided into one. A downlink subframe of 0.5 ms and a special subframe of 0.5 ms, the uplink subframe of 1 ms of LTE is divided into two uplink subframes of 0.5 ms, and the structure of the frame configuration with a TTI of 0.5 ms is shown in FIG. .

It is assumed that the processing delay of the base station side is 0.2 ms, the processing delay of the user side is 0.2 ms, and the frame configuration 0 with the TTI of 0.5 ms is taken as an example, and the delay of the downlink of the frame configuration 0 is: when processing on the base station side Delay 0.2ms + frame alignment delay 1.3ms + user side processing delay 0.2ms + one TTI duration 0.5ms = 2.2ms.

In the same manner, the delay of the uplink or downlink data transmission in the frame configuration 0 to 6 when the TTI is 0.5 ms can be separately determined, as shown in Table 2:

Table 2

帧配置 Frame configuration	00	11	22	33	44	55	66
上行时延(ms)Uplink delay (ms)	1.651.65	2.22.2	1.31.3	3.7753.775	4.554.55	5.4255.425	1.9251.925
下行时延(ms)Downlink delay (ms)	2.22.2	1.651.65	2.952.95	1.6751.675	1.41.4	1.2251.225	1.9251.925

How to combine carrier aggregation technology to further reduce the communication delay between the base station and the terminal, there is currently no solution.

Summary of the invention

The embodiments of the present invention provide a carrier aggregation method and device, which are used to further reduce the communication delay between a base station and a terminal by using a carrier aggregation technology.

The specific technical solutions provided by the embodiments of the present invention are as follows:

In a first aspect, a method for carrier aggregation is provided, including:

The base station determines a frame configuration of each of the at least two component carriers used for carrier aggregation;

Determining, by the base station, an offset of a frame start time of each of the at least two component carriers except the reference component carrier, where the reference component carrier is the at least At least one of two component carriers;

The base station communicates with the terminal through the at least two component carriers.

With reference to the first aspect, in a first possible implementation, the base station communicates with the terminal by using the at least two component carriers, including:

Determining, by the base station, the first component carrier according to an offset of a frame start time of the first component carrier with respect to the reference component carrier and/or an offset of the second component carrier with respect to the reference component carrier Advancing a first offset by a frame start time of the second component carrier;

The base station schedules a second downlink subframe of the first component carrier by using a first downlink subframe of the first component carrier, where the second downlink subframe is the same as the first downlink subframe; or,

The base station schedules a second downlink subframe of the first component carrier by using a first downlink subframe of the second component carrier, where the second downlink subframe is a sub-subframe of the first downlink subframe The subframe number indicated by the sum value obtained by adding the first offset to the frame number; or

The base station schedules a first uplink subframe of the first component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the first component carrier, and the first uplink subframe is located at a first The preset subframe is located after the first preset subframe, where the value of the subframe number of the first preset subframe is based on a sum of a subframe number of the second downlink subframe and a preset value. Determined; or,

The base station schedules a first uplink subframe of the first component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the second component carrier, and the first uplink subframe is located in a second The preset subframe is located after the second preset subframe, and the subframe number of the second preset subframe is added according to the subframe number of the second downlink subframe plus the first offset. The sum of the values obtained from the preset values is determined; or,

The base station schedules a first downlink subframe of the second component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the second component carrier, and the second downlink subframe and the second downlink subframe Said that the first downlink subframe is the same; or,

The base station schedules a first downlink subframe of the second component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the first component carrier, where the first downlink subframe is located a subframe in which the subframe number of the second downlink subframe is subtracted from the first offset; or

The base station schedules a first uplink subframe of the second component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the second component carrier, and the first uplink subframe is located in a third The preset subframe is located after the third preset subframe, and the subframe number of the third preset subframe is determined according to the sum of the subframe number of the second downlink subframe plus a preset value. After the indicated subframe or subframe; or,

The base station schedules a first uplink subframe of the second component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the first component carrier, and the first uplink subframe is located at a fourth The preset subframe is located after the fourth preset subframe, and the subframe number of the fourth preset subframe is a difference obtained by subtracting the first offset from the subframe number of the second downlink subframe. The sum of the values obtained by the preset value is determined after the indicated subframe or subframe.

With reference to the first possible implementation of the first aspect, in a second possible implementation, if the base station schedules a first uplink subframe of the first component carrier by using a scheduling subframe, or The subframe is configured to schedule a first uplink subframe of the second component carrier, where the scheduling subframe is a downlink subframe that is closest to the first uplink subframe in the first component carrier and the second component carrier.

With reference to the first aspect, in a third possible implementation, the base station determines, for each of the at least two component carriers, except the reference component carrier, with respect to the reference component carrier The offset of the frame start time, including:

Determining, by the base station, an offset of a frame start time of each of the at least two component carriers except the reference component carrier with respect to a frame start time of the reference component carrier according to a frame configuration of each of the component carriers the amount.

In conjunction with any one of the first aspect to the third possible implementation, in a fourth possible implementation, different component carriers are offset from the frame start time of the reference component carrier by the same amount.

With reference to any one of the first aspect to the third possible implementation, in a fifth possible implementation, the base station determines a frame configuration of each of the component carriers, and determines the at least two component carriers An offset of a frame start time of each of the component carriers other than the reference component carrier with respect to the reference component carrier, including:

The base station selects a frame configuration combination from a set of preset frame configuration combinations, where a frame of a specified position in the frame configuration combination is configured as a frame configuration of a reference component carrier, and each frame included in the frame configuration combination is adopted. Determining a frame configuration of each of the component carriers, obtaining an offset or offset sequence corresponding to the selected frame configuration combination, and determining the at least two component carriers according to the acquired offset or offset sequence An offset of a frame start time of each of the component carriers other than the reference component carrier with respect to the reference component carrier, wherein frame composition combinations corresponding to the same offset or offset sequence belong to the same a set, or a frame configuration combination including at least one identical component carrier, and the same component carrier having the same frame configuration belongs to the same set;

or,

Determining, by the base station, a preset offset or offset sequence, and determining, according to the obtained offset or offset sequence, each of the at least two component carriers except the reference component carrier. And acquiring, by the offset of the frame start time of the reference component carrier, a set of frame configuration combinations corresponding to the offset or the offset sequence, and selecting a frame configuration combination from the set of the frame configuration combinations. The frame configuration of the specified location in the frame configuration combination is a frame configuration of the reference component carrier, and each frame configuration included in the selected frame configuration combination is used to determine a frame configuration of each of the component carriers, where corresponding to the same partial The frame configuration combination of the shift or offset sequence belongs to the same set, or A frame configuration combination including at least one identical component carrier and the same component carrier having the same frame configuration belongs to the same set.

With reference to the fifth possible implementation of the first aspect, in a sixth possible implementation, determining, according to the acquired offset, each of the at least two component carriers except the reference component carrier The offset of the frame start time of the reference component carrier includes:

Determining that the offset of each of the at least two component carriers except the reference component carrier is the same as the frame start time of the reference component carrier, which is the acquired offset;

And determining, according to the obtained offset sequence, an offset of a frame start time of each of the at least two component carriers except the reference component carrier with respect to a frame start time of the reference component carrier, including:

And the offset sequence is identical to the frame configuration of the frame configuration combination except that the frame configuration of the reference component carrier is specified, and each offset in the acquired offset sequence is determined as An offset of a frame start time of each of the at least two component carriers other than the reference component carrier with respect to the reference component carrier.

With reference to any one of the first aspect to the third possible implementation, in a seventh possible implementation, if the transmission time interval TTI is 1 millisecond, and the component carrier used for carrier aggregation is two, two The frame configuration combination of the component carriers is any one of the following:

Combination of frame configuration 1 and frame configuration 1, the offset of the frame start time corresponding to the combination of frame configuration 1 and frame configuration 1 is 2 subframes;

Combination of frame configuration 2 and frame configuration 2, the offset of the frame start time corresponding to the combination of frame configuration 2 and frame configuration 2 is 2 subframes;

Frame configuration 1 is combined with frame configuration 0. If frame configuration 1 is the first component carrier and frame configuration 0 is the second component carrier, the frame start time offset corresponding to the combination of frame configuration 1 and frame configuration 0 is The amount is 2 subframes; if the frame configuration 0 is the first component carrier and the frame configuration 1 is the second component carrier, the frame start time offset corresponding to the combination of the frame configuration 1 and the frame configuration 0 is 3 Sub-frames;

Combination of frame configuration 2 and frame configuration 0, if frame configuration 2 is the first component carrier, frame matching If 0 is the second component carrier, the offset of the frame start time corresponding to the combination of the frame configuration 2 and the frame configuration 0 is 1 subframe or 2 subframes; if the frame configuration 0 is the first component carrier, The frame configuration 2 is the second component carrier, and the offset of the frame start time corresponding to the combination of the frame configuration 2 and the frame configuration 0 is 4 subframes or 3 subframes;

The frame configuration 1 is combined with the frame configuration 2. If the frame configuration 1 is the first component carrier and the frame configuration 2 is the second component carrier, the frame start time offset corresponding to the combination of the frame configuration 1 and the frame configuration 2 is 3 subframes; if the frame configuration 2 is the first component carrier and the frame configuration 1 is the second component carrier, the frame start time offset corresponding to the combination of the frame configuration 1 and the frame configuration 2 is 2 subframes;

a combination of the frame configuration 6 and the frame configuration 6, the offset of the frame start time corresponding to the combination of the frame configuration 6 and the frame configuration 6 is 2 subframes or 3 subframes;

The combination of the frame configuration 3 and the frame configuration 0. If the frame configuration 3 is the first component carrier and the frame configuration 0 is the second component carrier, the frame start time of the combination of the frame configuration 3 and the frame configuration 0 is offset. The shift amount is 3 subframes; if the frame configuration 0 is the first component carrier and the frame configuration 3 is the second component carrier, the frame start time offset corresponding to the combination of the frame configuration 3 and the frame configuration 0 is 2 subframes;

The combination of the frame configuration 4 and the frame configuration 0. If the frame configuration 4 is the first component carrier and the frame configuration 0 is the second component carrier, the frame start time of the combination of the frame configuration 4 and the frame configuration 0 is offset. The shift amount is 3 subframes; if the frame configuration 0 is the first component carrier and the frame configuration 4 is the second component carrier, the frame start time offset corresponding to the combination of the frame configuration 4 and the frame configuration 0 is 2 subframes;

The combination of the frame configuration 5 and the frame configuration 0. If the frame configuration 5 is the first component carrier and the frame configuration 0 is the second component carrier, the frame start time of the combination of the frame configuration 5 and the frame configuration 0 is offset. The shift amount is 2 subframes; if the frame configuration 0 is the first component carrier and the frame configuration 5 is the second component carrier, the frame start time offset corresponding to the combination of the frame configuration 5 and the frame configuration 0 is 3 subframes.

Combining any of the first aspect to the third possible implementation, in the eighth possible implementation If the transmission time interval TTI is 0.5 milliseconds and the component carriers used for carrier aggregation are two, the frame configuration combinations of the two component carriers are:

Combination of frame configuration 1 and frame configuration 1, the offset of the frame start time corresponding to the combination of frame configuration 1 and frame configuration 1 is 5 subframes;

The combination of the frame configuration 2 and the frame configuration 2, the offset of the frame start time corresponding to the combination of the frame configuration 2 and the frame configuration 2 is 5 subframes;

Frame configuration 1 is combined with frame configuration 0. If frame configuration 1 is the first component carrier and frame configuration 0 is the second component carrier, the frame start time offset corresponding to the combination of frame configuration 1 and frame configuration 0 is The amount is 4 subframes; if frame configuration 0 is the first component carrier and frame configuration 1 is the second component carrier, the frame start time offset corresponding to the combination of frame configuration 1 and frame configuration 0 is 16 Sub-frames;

Combination of frame configuration 2 and frame configuration 0. If frame configuration 2 is the first component carrier and frame configuration 0 is the second component carrier, the frame start time offset corresponding to the combination of frame configuration 2 and frame configuration 0 The shift amount is 14 subframes or 13 subframes; if the frame configuration 0 is the first component carrier and the frame configuration 2 is the second component carrier, the frame start time corresponding to the combination of the frame configuration 2 and the frame configuration 0 The offset is 6 subframes or 7 subframes;

The frame configuration 1 is combined with the frame configuration 2. If the frame configuration 1 is the first component carrier and the frame configuration 2 is the second component carrier, the frame start time offset corresponding to the combination of the frame configuration 1 and the frame configuration 2 is 16 subframes; if the frame configuration 2 is the first component carrier and the frame configuration 1 is the second component carrier, the frame start time offset corresponding to the combination of the frame configuration 1 and the frame configuration 2 is 4 subframes;

Combination of frame configuration 6 and frame configuration 6, the frame start time offset corresponding to the combination of frame configuration 6 and frame configuration 6 is 4 subframes or 16 subframes;

The combination of the frame configuration 3 and the frame configuration 0. If the frame configuration 3 is the first component carrier and the frame configuration 0 is the second component carrier, the frame start time of the combination of the frame configuration 3 and the frame configuration 0 is offset. The shift amount is 16 subframes; if the frame configuration 0 is the first component carrier and the frame configuration 3 is the second component carrier, the frame start time offset corresponding to the combination of the frame configuration 3 and the frame configuration 0 is 4 subframes;

The combination of the frame configuration 4 and the frame configuration 0. If the frame configuration 4 is the first component carrier and the frame configuration 0 is the second component carrier, the frame start time of the combination of the frame configuration 4 and the frame configuration 0 is offset. The shift amount is 14 subframes; if the frame configuration 0 is the first component carrier and the frame configuration 4 is the second component carrier, the frame start time offset corresponding to the combination of the frame configuration 4 and the frame configuration 0 is 6 subframes;

The combination of the frame configuration 5 and the frame configuration 0. If the frame configuration 5 is the first component carrier and the frame configuration 0 is the second component carrier, the frame start time of the combination of the frame configuration 5 and the frame configuration 0 is offset. The shift amount is 14 subframes; if the frame configuration 0 is the first component carrier and the frame configuration 5 is the second component carrier, the frame start time offset corresponding to the combination of the frame configuration 5 and the frame configuration 0 is 6 subframes.

With reference to any one of the first aspect to the third possible implementation, in a ninth possible implementation, the at least two component carriers are composed of two or more carrier groups, and each of the carrier groups includes one or more Member carrier

Determining, by the base station, a frame configuration of each of the at least two component carriers used for carrier aggregation, including:

Determining, by the base station, frame configurations of component carriers in each of the carrier groups, respectively;

Determining an offset of a frame start time of each of the at least two component carriers except the reference component carrier with respect to a frame start time of the reference component carrier, including:

The base station respectively determines an offset of a frame start time of each component carrier except the reference component carrier in each of the carrier groups with respect to a frame start time of the reference component carrier.

With reference to any one of the first aspect to the third possible implementation, in a tenth possible implementation, a frame configured for downlink data transmission of a frame configuration of each component carrier of the at least two component carriers The product of the number of submultiples used for the uplink data transmission is multiplied by a ratio of 1 to a preset range.

With reference to any one of the first aspect to the third possible implementation, in an eleventh possible implementation, the base station communicates with the terminal by using the at least two component carriers, including:

The base station communicates with the terminal according to a frame scheduling of each of the component carriers according to a reference scheduling sequence. The reference scheduling timing is a scheduling timing configured for any frame.

With reference to any one of the first aspect to the third possible implementation, in a twelfth possible implementation, the offset is a preset value;

Or the difference between the offset and the reference value is within a preset range;

Alternatively, the offset satisfies that the uplink subframes between the at least two component carriers are not consecutive, and the interval time interval is greater than or equal to the carrier switching time.

In conjunction with the twelfth possible implementation of the first aspect, in a thirteenth possible implementation, the preset value or the reference value is used by a first one of the at least two of the component carriers The number of subframes between the data transmission subframe and the first subframe used for uplink data transmission;

or,

The preset value or the reference value is determined according to the number of times that the subframe for uplink data transmission and the subframe for downlink data transmission exist simultaneously in the at least two component carriers in one frame.

In a second aspect, a method for carrier aggregation is provided, including:

Receiving, by the terminal, a frame configuration of at least two component carriers for carrier aggregation sent by the base station;

Obtaining, by the terminal, an offset of a frame start time of each of the at least two component carriers except the reference component carrier, where the reference component carrier is the at least At least one of two component carriers;

The terminal communicates with the base station through the at least two component carriers.

With reference to the second aspect, in a first possible implementation, the terminal acquires a frame start time of each of the at least two component carriers except the reference component carrier with respect to the reference component carrier Offset, including:

Receiving, by the terminal, an offset of a frame start time of each of the at least two component carriers, except the reference component carrier, with respect to a frame start time of the reference component carrier; or

Determining, by the terminal, a synchronization signal of each of the component carriers, a deviation of a frame start time of each of the at least two component carriers except the reference component carrier with respect to a frame start time of the reference component carrier Transfer amount.

In a third aspect, there is provided a base station having the functionality of the method of implementing the first aspect described above. The above functions can be implemented by hardware or by executing corresponding software through hardware. The above hardware or software includes one or more modules corresponding to the above functions.

In a fourth aspect, there is provided a terminal having the functionality of the method of implementing the second aspect described above. The above functions can be implemented by hardware or by executing corresponding software through hardware. The above hardware or software includes one or more modules corresponding to the above functions.

Based on the foregoing technical solution, in the embodiment of the present invention, the base station is passing the carrier by determining the frame configuration of each component carrier of the carrier aggregation and determining the offset of the component carrier of the carrier aggregation with respect to the frame start time of the reference component carrier. The communication delay can be further reduced when the aggregation communicates with the terminal.

DRAWINGS

1 is a schematic diagram of a carrier aggregation scenario;

2 is a schematic diagram of frame configuration 0 of LTE;

3 is a schematic diagram of a frame configuration with a TTI of 0.5 ms;

4 is a schematic diagram of an application scenario according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of an application scenario 2 according to an embodiment of the present invention;

6 is a schematic flowchart of a method for performing carrier aggregation by a base station according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of carrier aggregation of a combination of 0 and 1 for a 1 ms frame in a TTI according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of carrier aggregation of a combination of 6 and 6 frame configurations with a TTI of 1 ms according to an embodiment of the present invention; FIG.

FIG. 9 is a schematic flowchart of a method for performing carrier aggregation by a terminal according to an embodiment of the present invention;

10 is a schematic diagram of carrier aggregation in which a TTI is a 1

ms frame configuration

2 and 0 in an embodiment of the present invention;

FIG. 11 is a schematic diagram of carrier aggregation of a combination of 3 and 0 for a 1 ms frame in a TTI according to an embodiment of the present invention;

FIG. 12 is a schematic diagram of carrier aggregation of a combination of 4 and 0 frame configurations with a TTI of 1 ms according to an embodiment of the present invention;

FIG. 13 is a schematic diagram of carrier aggregation of a combination of 5 and 0 for a 1 ms frame in a TTI according to an embodiment of the present invention;

14 is a schematic diagram of carrier aggregation of a combination of 0 and 1 in a frame with a TTI of 0.5 ms according to an embodiment of the present invention;

15 is a schematic diagram of carrier aggregation of a combination of 2 and 0 in a frame with a TTI of 0.5 ms according to an embodiment of the present invention;

16 is a schematic diagram of carrier aggregation of a combination of 3 and 0 in a frame configuration with a TTI of 0.5 ms according to an embodiment of the present invention;

FIG. 17 is a schematic diagram of carrier aggregation of a combination of 4 and 0 in a frame configuration with a TTI of 0.5 ms according to an embodiment of the present invention; FIG.

FIG. 18 is a schematic diagram of carrier aggregation of a combination of 5 and 0 in a frame configuration with a TTI of 0.5 ms according to an embodiment of the present invention; FIG.

FIG. 19 is a schematic diagram of carrier aggregation of a combination of 6 and 6 frame configurations with a TTI of 0.5 ms according to an embodiment of the present invention; FIG.

20 is a schematic structural diagram of a base station according to an embodiment of the present invention;

21 is a schematic structural diagram of another base station according to an embodiment of the present invention;

FIG. 22 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

FIG. 23 is a schematic structural diagram of another terminal according to an embodiment of the present invention;

FIG. 24 is a schematic diagram of carrier aggregation of a combination of 1 and 1 frame configurations with a TTI of 1 ms according to an embodiment of the present invention;

25 is a schematic diagram of carrier aggregation of a combination of 2 and 2 frame configurations with a TTI of 1 ms according to an embodiment of the present invention;

26 is a schematic diagram of carrier aggregation of a combination of 1 and 2 frame configurations with a TTI of 1 ms according to an embodiment of the present invention;

FIG. 27 is a schematic diagram of carrier aggregation of a combination of 1 and 1 frame configuration with a TTI of 0.5 ms according to an embodiment of the present invention;

28 is a schematic diagram of carrier aggregation of a combination of 2 and 2 frame configurations with a TTI of 0.5 ms according to an embodiment of the present invention;

FIG. 29 is a schematic diagram of carrier aggregation of a combination of 1 and 2 frame configurations with a TTI of 0.5 ms according to an embodiment of the present invention; FIG.

FIG. 30 is a schematic diagram of carrier aggregation of a combination of 2 and 0 in a frame with a TTI of 0.5 ms according to an embodiment of the present invention;

FIG. 31 is a schematic diagram of carrier aggregation of a combination of 5 and 0 in a frame configuration with a TTI of 0.5 ms according to an embodiment of the present invention.

detailed description

The present invention will be further described in detail with reference to the accompanying drawings, in which FIG. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

As shown in FIG. 4 and FIG. 5, the application scenario of the present invention is applied to communication between a base station and a terminal in a carrier aggregation scenario. The terminal may be a device having a user function such as a mobile terminal or a small station, and the base station may be a common base station or a macro. station. For example, the base station may be a base transceiver station (BTS), a Node B (Node B), an evolved Node B (eNode B or eNB), a home base station (Home Node B or HNB), an evolved home base station (Home eNode B or HeNB), relay node (Relay Node or RN), wireless access point (AP), wireless router, and the like.

In the embodiment of the present invention, as shown in FIG. 6, the specific process of the base station performing carrier aggregation is as follows:

Step 601: The base station determines a frame configuration of each component carrier of at least two component carriers used for carrier aggregation.

In an implementation, the frame configuration of at least two component carriers is an arbitrary frame configuration combination. The arbitrary frame configuration combination is any combination of the frame configurations 0 to 6 in the 1 ms TTI frame, or the arbitrary frame configuration combination is any combination of the frame configurations 0 to 6 in the 0.5 ms TTI frame, or the arbitrary frame configuration combination includes the newly defined various combinations. Frame configuration.

Optionally, the frame configuration of each component carrier of the at least two component carriers used for carrier aggregation is multiplied by the ratio of the number of subframes for downlink data transmission and the number of subframes used for uplink data transmission. Product, the difference from 1 belongs to the preset range. The preset range is preset. For example, it is set to a range of plus or minus 0.5 according to the empirical value. This is only an example and is not determined by plus or minus 0.5. The scope is limited. Optionally, the frame configuration of each component carrier of the at least two component carriers used for carrier aggregation is multiplied by the ratio of the number of subframes for downlink data transmission and the number of subframes used for uplink data transmission. The product is 1.

For example, for carrier aggregation, two component carriers CC1 and CC2, CC1 frame configuration The ratio of the number of subframes for downlink data transmission to the number of subframes for uplink data transmission is 6/4, and the number of subframes configured for downlink data transmission and the subframe for uplink data transmission configured by CC2 frames The ratio of the number of frames is 4/6, and the product of the two ratios is 1.

Step 602: The base station determines an offset of a frame start time of each component carrier of the at least two component carriers except the reference component carrier, where the reference component carrier is at least one of the at least two component carriers. .

In the implementation, if the frame start time advance or delay offset of the component carrier relative to the reference component carrier is defined, the offset is an integer greater than or equal to zero. If the frame start time of the component carrier is offset from the reference component carrier by the offset, the offset is an integer, and when the offset is greater than zero, the frame start time timing is advanced relative to the reference component carrier, and the offset is When less than zero, the frame start time timing delay relative to the reference component carrier; or, when the offset is greater than zero, the frame start time timing delay relative to the reference component carrier, when the offset is less than zero, relative to the reference component carrier The frame start time is advanced. The offset of the frame start time is equal to zero, indicating that the frame carrier and the reference component carrier have the same frame start time.

In the implementation, in order to reduce the complexity of determining the frame configuration, the base station divides at least two component carriers into multiple carrier groups, each carrier group includes one or more component carriers, and respectively determines frames of each component carrier in each carrier group. Configuration. For example, the base station determines four component carriers for carrier aggregation, and divides the four component carriers into two groups, each group includes two component carriers, and respectively determines a frame configuration corresponding to two component carriers of each group. The frame configuration is performed by dividing the carrier group. If the number of carriers included in the carrier group that has not been frame-configured is the same as the number of carriers included in the carrier group that has been frame-configured, the carrier group that has been frame-configured can be directly used. The frame configuration of the medium component carrier improves configuration efficiency and reduces complexity.

Similarly, in order to reduce the complexity of determining the offset of the component carrier relative to the frame start time of the reference component carrier, the base station divides at least two component carriers into multiple carrier groups, each carrier group including more than one member. a carrier, one and only one carrier group includes a reference component carrier, and for a carrier group not including the reference component carrier, determining an offset of a frame start time of each component carrier in the carrier group with respect to a reference component carrier; Refer to the carrier group of the component carrier to determine the The offset of the frame start time of each component carrier other than the reference component carrier relative to the frame start time of the reference component carrier. For the first carrier group for which the offset is not determined, if the first carrier group includes the same number of component carriers as the second carrier group for which the offset has been determined, and the same member in the first carrier group and the second carrier group If the carriers have the same frame configuration, the offset of the component carriers in the first carrier group can directly use the offset of the same component carrier in the second carrier group, thereby reducing complexity and improving efficiency, wherein the second carrier group can be It consists of a part of carriers in the carrier aggregation system, and may also be composed of carriers other than the carrier aggregation system.

In an implementation, there may be different schemes when determining the offset. For example, the offset may be determined according to the following principle: at least two component carriers have both subframes for downlink data transmission and at the same time in one frame. The subframes for uplink data transmission have the most occurrences. Specifically, the base station determines, in the manner of the offset of the frame start time of each of the at least two component carriers, other than the reference component carrier, with respect to the frame start time of the reference component carrier, including but not limited to the following The enumerated implementations:

a first embodiment, the base station determines, according to a frame configuration of each of the component carriers, a frame start time of each of the at least two component carriers except the reference component carrier with respect to the reference component carrier The offset.

Specifically, the base station determines, according to a ratio of a total number of subframes for downlink data transmission in each of the component carriers to a total number of subframes used for uplink data transmission, a frame of each of the component carriers relative to a reference component carrier. The offset of the start time.

In the second implementation manner, the offset of the frame start time is a preset value, and the preset value is agreed by a protocol, or is obtained by a base station from configuration signaling of other devices.

Optionally, the preset value is a number of subframes between a first one of the at least two component carriers used for downlink data transmission and a first one used for uplink data transmission; Or the preset value is determined according to the number of times that the subframe for uplink data transmission and the subframe for downlink data transmission exist simultaneously in the at least two component carriers in one frame. For example, in the case of two component carriers, assuming that the component carriers are divided into CC1 and CC2, assuming that the offset between CC1 and CC2 is zero, CC1 and CC2 have both subframes for uplink data transmission in one frame. And for sub-data transmission The number of frames is 1; when the offset between CC1 and CC2 is 1, CC1 and CC2 have both the subframe for uplink data transmission and the subframe for downlink data transmission in one frame. When the offset between CC1 and CC2 is 2, the number of times that CC1 and CC2 have both a subframe for uplink data transmission and a subframe for downlink data transmission in one frame is 3; between CC1 and CC2 When the offset is 3, CC1 and CC2 have both the subframe for uplink data transmission and the subframe for downlink data transmission in a frame of 6..., and so on, traverse all possible offsets. For the obtained CC1 and CC2, the offset corresponding to the maximum value of the number of times of the subframe for uplink data transmission and the subframe for downlink data transmission is simultaneously present as a preset value in one frame.

In a third implementation manner, the difference between the offset of the frame start time and the reference value is within a preset range, or the offset satisfies an uplink subframe between the at least two component carriers Not continuous, the interval is greater than or equal to the carrier switching time. .

Optionally, the reference value is a number of subframes between a subframe that is used by the first one of the at least two of the component carriers for downlink data transmission and a subframe that is used for uplink data transmission; or The preset value is determined according to the number of times that the subframe for uplink data transmission and the subframe for downlink data transmission exist simultaneously in the at least two component carriers in one frame. For example, in the case of two component carriers, assuming that the component carriers are divided into CC1 and CC2, assuming that the offset between CC1 and CC2 is zero, CC1 and CC2 have both subframes for uplink data transmission in one frame. And the number of times of the subframe used for downlink data transmission is once; when the offset between CC1 and CC2 is 1, CC1 and CC2 have both subframes for uplink data transmission and downlink data transmission in one frame. The number of times of the subframe is 2; when the offset between CC1 and CC2 is 2, the number of times that CC1 and CC2 have both the subframe for uplink data transmission and the subframe for downlink data transmission in one frame is 3; When the offset between CC1 and CC2 is 3, CC1 and CC2 have both the subframe for uplink data transmission and the subframe for downlink data transmission in a frame of 6..., according to this The analogy traverses all possible offsets, and the obtained CC1 and CC2 have the offset corresponding to the maximum value of the number of times of the subframe for the uplink data transmission and the subframe for the downlink data transmission in one frame as Reference.

In a specific implementation, the correspondence between the frame configuration combination of the at least two component carriers and the offset of the frame start time or the offset sequence is preset, and the offset of the same frame start time is The frame configuration combination of the offset sequence is divided into the same set, or the frame component combination of the same component carrier having the same frame configuration is divided into the same set, and the base station selects the preset. The frame configuration combination and the offset of the frame start time are as follows:

In a first embodiment, the base station selects a frame configuration combination from a set of preset frame configuration combinations, and the frame of the specified position in the frame configuration combination is configured as a frame configuration of the reference component carrier, and the frame configuration included in the frame configuration combination is used. Determining, by each frame configuration, a frame configuration of each of the component carriers, acquiring an offset or an offset sequence of a frame start time corresponding to the selected frame configuration combination, according to an offset or partial offset of the acquired frame start time a shift sequence that determines an offset of a frame start time of each of the component carriers other than the reference component carrier with respect to the reference component carrier;

In a second implementation manner, the base station acquires an offset or an offset sequence of a preset frame start time, and determines, in addition to the reference component carrier, according to the acquired offset or offset sequence of the frame start time. Obtaining an offset of the frame start time or a set of frame configuration combinations corresponding to the offset sequence of the component carrier relative to a frame start time of the reference component carrier, and combining the frames from the frame configuration Selecting a frame configuration combination, the frame configuration of the specified location in the frame configuration combination is a frame configuration of the reference component carrier, and determining each of the component carriers by using each frame configuration included in the selected frame configuration combination Frame configuration.

Wherein, if the frame configuration combination corresponds to an offset, in a case where the frame configuration of each component carrier is configured by using the frame configuration combination, each of the at least two component carriers except the reference component carrier is determined. The offset of the component carrier relative to the frame start time of the reference component carrier is the same, and the offset corresponding to the frame configuration combination is configured;

If the frame configuration combination corresponds to an offset sequence, the offset sequence is identical to the frame configuration of the frame configuration combination except that the frame configuration of the reference component carrier is specified, that is, the component carrier adopts the In the case of a frame configuration in a frame configuration combination, the offset of the component carrier relative to the reference component carrier is an offset in the offset sequence corresponding to the arrangement order of the frame configuration. Determining, in sequence, each offset in the acquired offset sequence as a frame start time of each of the at least two component carriers except the reference component carrier with respect to the reference component carrier An offset, and in turn determining each frame configuration in the frame configuration combination as the at least two members The frame configuration of each of the component carriers of the wave is sufficient.

Optionally, for the convenience of implementation, after obtaining the offset of the frame start time of the component carrier relative to the reference component carrier according to any manner provided by the embodiment of the present invention, different component carriers may be set relative to the reference member. The offset of the frame start time of the carrier is the same, and is the offset of the obtained frame start time.

Optionally, if the TTI is 1 ms and the component carrier used for carrier aggregation is two, the frame configuration combination of the two component carriers may be any one of the following: a combination of frame configuration 0 and frame configuration 1, or Combination of frame configuration 6 and frame configuration 6, or combination of frame configuration 3 and frame configuration 0, or combination of frame configuration 4 and frame configuration 0, or combination of frame configuration 5 and frame configuration 0, or frame configuration 2 in combination with frame configuration 0; wherein, the combination of configuration 0 and frame configuration 1, the combination of frame configuration 6 and frame configuration 6, the combination of frame configuration 3 and frame configuration 0, the combination of frame configuration 4 and frame configuration 0, and the frame The offset of the frame start time corresponding to the combination of configuration 5 and frame configuration 0 is 2 subframes; the offset of the frame start time corresponding to the combination of frame configuration 2 and frame configuration 0 is 3 subframes. It should be noted that the frame configuration combination and the corresponding frame start time offset are the configurations that reduce the delay effect, and do not exclude the combination of other frame configuration combinations and the frame start time offset. Such as the ability to reduce the delay configuration. Alternatively, the frame configuration combination of the two component carriers may also be any one of the following:

a combination of the frame configuration 2 and the frame configuration 2, wherein the offset of the frame start time corresponding to the combination of the frame configuration 2 and the frame configuration 2 is 2 subframes;

Combination of frame configuration 2 and frame configuration 0, if frame configuration 2 is the first component carrier, frame configuration 0 Is the second component carrier, and the offset of the frame start time corresponding to the combination of the frame configuration 2 and the frame configuration 0 is 1 subframe or 2 subframes; if the frame configuration 0 is the first component carrier, the frame configuration 2 is the second component carrier, and the offset of the frame start time corresponding to the combination of the frame configuration 2 and the frame configuration 0 is 4 subframes or 3 subframes;

Optionally, if the TTI is 0.5 ms and the component carrier used for carrier aggregation is two, the frame configuration combination of the two component carriers is: a combination of frame configuration 0 and frame configuration 1, or frame configuration 3 and Combination of frame configuration 0, or combination of frame configuration 2 and frame configuration 0, or combination of frame configuration 4 and frame configuration 0, or combination of frame configuration 5 and frame configuration 0, or frame configuration 6 and frame configuration a combination of 6; a combination of frame configuration 0 and frame configuration 1 and a frame start time corresponding to a combination of frame configuration 3 and frame configuration 0 is 4 subframes; a combination of frame configuration 2 and frame configuration 0, The combination of the frame configuration 4 and the frame configuration 0, the combination of the frame configuration 5 and the frame configuration 0, and the frame start time corresponding to the combination of the frame configuration 6 and the frame configuration 6 are 6 subframes. It should be noted that the frame configuration combination and the corresponding frame start time offset are the configurations that reduce the delay effect, and do not exclude the combination of other frame configuration combinations and the frame start time offset. Such as the ability to reduce the delay configuration. Alternatively, the frame configuration combination of the two component carriers may also be any one of the following:

The frame configuration 1 is combined with the frame configuration 2. If the frame configuration 1 is the first component carrier and the frame configuration 2 is the second component carrier, the frame start time offset corresponding to the combination of the frame configuration 1 and the frame configuration 2 is 16 subframes; if frame configuration 2 is the first component carrier, frame configuration 1 is the second component carrier, Then, the offset of the frame start time corresponding to the combination of the frame configuration 1 and the frame configuration 2 is 4 subframes;

Step 603: The base station communicates with the terminal by using the at least two component carriers.

In a specific implementation, the base station determines a new scheduling sequence according to a frame configuration of each of the component carriers, and communicates with the terminal according to the new scheduling sequence. For convenience, the base station communicates with the terminal according to the frame configuration of each component carrier according to the reference scheduling timing, and the reference scheduling timing is the scheduling timing of any frame configuration. The arbitrary frame configuration may be any one of frame configurations 0 to 6 in 1 ms TTI, or any one of frame configuration 0 to 6 in 0.5 ms TTI, or a frame configuration newly defined by a technician.

Optionally, in order to further reduce the delay, in the case of supporting cross-carrier scheduling, the base station according to the offset of the frame start time of the first component carrier with respect to the reference component carrier and/or the second component carrier Determining, with respect to the offset of the reference component carrier, a first offset of the frame start time of the first component carrier with respect to the second component carrier, a subframe of the first component carrier and a subcarrier of the second carrier carrier The following scheduling relationships exist between frames:

a, the base station, by using the first downlink subframe in the first component carrier, the second downlink subframe of the first component carrier, the subframe number of the second downlink subframe, and the first downlink subframe The subframe number is the same.

For example, as shown in FIG. 7, CC1 adopts frame configuration 0, CC2 adopts frame configuration 1, and CC2 is offset by 2 subframes with respect to the frame start time of CC1, and downlink subframe 0 of CC2 is determined by downlink subframe 0 of CC2. Scheduling.

The base station schedules the first uplink subframe of the first component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the first component carrier, and the subframe of the first uplink subframe The number is greater than or equal to the sub-frame number of the second downlink subframe plus a preset value obtained by modulo the frame length, and the frame length is the number of subframes included in one radio frame, That is, the first uplink subframe is located in the first preset subframe or is located after the first preset subframe, where the value of the subframe number of the first preset subframe is according to the second downlink. The subframe number of the subframe is determined by the sum of the preset values.

For example, as shown in FIG. 7, CC1 adopts frame configuration 0, CC2 adopts frame configuration 1, and CC2 has an offset of 2 subframes with respect to the frame start time of CC1, and the scheduling subframe of uplink subframe 2 of CC2 is CC2. Subframe 6, that is, the result that the subframe number 2 of the uplink subframe 2 of the CC2 is greater than or equal to the subframe 6 of the CC2 plus the preset value 4 and the frame length is modulo 10 is expressed as: 2 Greater than or equal to ((6+4) mod10=0), established.

The base station schedules the first uplink subframe of the first component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the second component carrier, and the subframe of the first uplink subframe The number greater than or equal to the subframe number of the second downlink subframe plus the first offset plus the preset value is obtained by modulo the frame length, and the frame length is a wireless The number of the subframes included in the frame, that is, the first uplink subframe is located in the second preset subframe or after the second preset subframe, and the subframe number of the second preset subframe is And determining, according to the sum of the subframe number of the second downlink subframe and the first offset plus a preset value.

For example, as shown in FIG. 7, CC1 adopts frame configuration 0, CC2 adopts frame configuration 1, and CC2 phase For the frame start time offset of CC1, the offset subframe is 2 subframes, and the scheduling subframe of the uplink subframe 2 of CC2 is subframe 6 of CC1, that is, the subframe number of the uplink subframe 2 of CC2 is greater than or equal to the subframe of CC1. The result of sub-frame number 6 of frame 6 plus offset 2 plus the preset value of 4 is modulo the frame length of 10, which is expressed as: 2 is greater than or equal to ((6+2+4) mod10 =2), established.

The base station schedules the first downlink subframe of the second component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the second component carrier, and the subframe of the second downlink subframe The frame number is the same as the subframe number of the first downlink subframe.

For example, as shown in FIG. 7, CC1 adopts frame configuration 0, CC2 adopts frame configuration 1, and CC2 has an offset of 2 subframes with respect to the frame start time of CC1, and the scheduling subframe of downlink subframe 0 of CC1 is CC1. In the downlink subframe 0, the scheduling subframe of the downlink subframe 5 of CC1 is the downlink subframe 5 of CC1.

e. The base station schedules a first downlink subframe of the second component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the first component carrier, and a sub-subframe of the second downlink subframe The frame number is equal to a result obtained by modulo the frame length of the subframe number of the first downlink subframe plus the first offset, where the frame length is a subframe included in one radio frame. The number of the first downlink subframe is the subframe indicated by the difference between the subframe number of the second downlink subframe and the first offset.

For example, as shown in FIG. 8, CC1 adopts frame configuration 6, CC2 adopts frame configuration 6, and CC2 has an offset of 2 subframes with respect to the frame start time of CC1, and the scheduling subframe of downlink subframe 9 of CC1 is CC2. Subframe 1, that is, the result that the subframe number of the scheduling subframe is equal to the subframe number of the downlink subframe of CC1 and the offset value of the offset 2 is modulo the frame length of 10, which is expressed as: the scheduler The subframe number of the frame is equal to (9+2) mod10=1.

f. The base station schedules a first uplink subframe of the second component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the second component carrier, and a subframe of the first uplink subframe The number is greater than or equal to the sub-frame number of the second downlink subframe plus a preset value obtained by modulo the frame length, and the frame length is the number of subframes included in one radio frame, That is, the first uplink subframe is located in the third preset subframe or is located after the third preset subframe, and the subframe number of the third preset subframe is based on the subframe number of the second downlink subframe. Plus the value obtained by the preset value is determined.

For example, as shown in FIG. 7, CC1 adopts frame configuration 0, CC2 adopts frame configuration 1, and CC2 has an offset of 2 subframes with respect to the frame start time of CC1, and the scheduling subframe of uplink subframe 2 of CC1 is located at CC1. The scheduling subframe is the downlink subframe 6 of the CC1, that is, the uplink subframe 2 of the CC1 is greater than or equal to the result of the sum of the subframe number 6 and the preset value 4 of the scheduling subframe and the frame length 10 is obtained. 0, expressed as: 2 is greater than or equal to ((6+4) mod10=0), holds, where "mod" is the modulo operation.

The base station schedules the first uplink subframe of the second component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the first component carrier, and the subframe of the first uplink subframe a number greater than or equal to a difference between a subframe number of the second downlink subframe minus a first offset and a value obtained by adding a preset value to a frame length, where the frame length is The number of subframes included in a radio frame, that is, the first uplink subframe is located in the fourth preset subframe or after the fourth preset subframe, and the subframe number of the fourth preset subframe is And determining, according to a difference between a subframe number of the second downlink subframe and a difference obtained by subtracting the first offset from a preset value.

For example, as shown in FIG. 7, CC1 adopts frame configuration 0, CC2 adopts frame configuration 1, and CC2 is offset by 2 subframes with respect to the frame start time of CC1, and the scheduling subframe of uplink subframe 2 of CC1 is located at CC2. The scheduling subframe is the downlink subframe 0 of the CC2, that is, the subframe number 0 of the scheduling subframe is greater than or equal to the subframe number 2 of the uplink subframe 2 of the CC1 plus the offset 2, and the subtraction is further subtracted. The difference between the preset value of 4 and the result of modulo the frame length of 10 is expressed as: 0 is greater than or equal to ((2+2-4) mod10=0), holds, or, the sub-frame 2 of CC1 The frame number 2 is greater than or equal to the subframe number 0 of the scheduling subframe minus the offset 2 plus the preset value 4, and the result obtained by taking the modulus of the frame length 10 is expressed as: 2 is greater than or equal to ((0- 2+4) mod10=2).

The second base subframe of the first component carrier is scheduled by the base station by using the first downlink subframe of the second component carrier, where the second downlink subframe is a sub-subframe of the first downlink subframe The frame number is added to the subframe indicated by the sum value obtained by the first offset.

In the foregoing scheduling relationships, if the base station schedules the first uplink subframe of the first component carrier by using a scheduling subframe, or the base station schedules the first uplink subframe of the second component carrier by using a scheduling subframe, The scheduling subframe is a downlink subframe that is closest to the first uplink subframe in the first component carrier and the second component carrier.

If the first component carrier and the second component carrier belong to the component carrier used for carrier aggregation, but none of the reference component carriers, the base station offsets the frame start time of the first component carrier with respect to the reference component carrier. The amount and the offset of the second component carrier relative to the reference component carrier determine a first offset of the frame start time of the first component carrier relative to the second component carrier.

If the second component carrier is the reference component carrier, the base station determines, according to the offset of the frame start time of the first component carrier with respect to the reference component carrier, the frame start time of the first component carrier relative to the second component carrier. An offset, the first offset being an offset of the frame start time of the first component carrier relative to the reference component carrier.

If the first component carrier is the reference component carrier, the base station determines, according to the offset of the frame start time of the second component carrier with respect to the reference component carrier, the frame start time of the first component carrier relative to the second component carrier. An offset, the first offset being an offset of a frame start time delay of the second component carrier relative to the reference component carrier.

Specifically, if both the first component carrier and the second component carrier are not reference component carriers, the first component carrier is offset by a predetermined amount relative to the reference component carrier, and the second component carrier is offset by an amount b relative to the reference component carrier, and b<a, determining that the frame start time advance offset of the first component carrier relative to the second component carrier is a difference obtained by ab; if the first component carrier and the second component carrier are not reference component carriers, the first component carrier is relative to Referring to the component carrier advance offset a, the second component carrier is offset with respect to the reference component carrier by an amount b, and determining a frame start time offset of the first component carrier relative to the second component carrier by a+b; If the first component carrier and the second component carrier are not reference component carriers, the first component carrier delays the offset a relative to the reference component carrier, and the second component carrier delays the offset b relative to the reference component carrier, and b>a And determining a frame start time advance offset of the first component carrier relative to the second component carrier as a difference obtained by ba.

Based on the same inventive concept, in the embodiment of the present invention, as shown in FIG. 9, the process of performing carrier aggregation by the terminal is as follows:

Step 901: The terminal receives a frame configuration of at least two component carriers for carrier aggregation sent by the base station.

Step 902: The terminal acquires an offset of a frame start time of each of the at least two component carriers except the reference component carrier with respect to a frame start time of the reference component carrier, where the reference component carrier is the at least two At least one of the component carriers.

In an implementation, the manner in which the terminal acquires the offset of the frame start time of each of the component carriers other than the reference component carrier with respect to the reference component carrier includes, but is not limited to, the following two types:

First, the terminal receives, by the base station, an offset of a frame start time of each of the at least two component carriers except a reference component carrier with respect to a frame start time of the reference component carrier;

Second, the terminal determines, by detecting a synchronization signal of each of the component carriers, a frame start time of each of the at least two component carriers except the reference component carrier with respect to the reference component carrier. The offset.

Step 903: The terminal communicates with the base station by using the at least two component carriers.

The following takes two component carriers as an example to analyze how to reduce the delay by setting the frame configuration of the component carrier and the offset of the frame start time.

In the first to sixth and thirteenth to fifteenth embodiments, it is assumed that the TTI is 1 ms, the processing delay of the downlink base station side is 1 ms, and the processing delay of the uplink user side is 1.5 ms.

In the first embodiment, it is assumed that the component carrier CC1 adopts frame configuration 0, the component carrier CC2 adopts frame configuration 1, and CC2 advances 2 subframes with respect to CC1, that is, the offset of the frame start time is 2 subframes, as shown in FIG. 7 . A schematic diagram of carrier aggregation for frame configuration 0 and frame configuration 1 is shown.

In the first embodiment, the calculation process of the frame alignment delay is as follows:

Downlink:

If the downlink data arrives in subframe 0 of CC2 and is transmitted in subframe 1 of CC2, assuming that it needs to wait for half of the duration of TTI in subframe 0 of CC2, the delay is 0.5 ms;

For the same reason, if the downlink data arrives in subframe 1 of CC2 and is transmitted in subframe 0 of CC1, the delay is 0.5 ms;

If the downlink data arrives in subframe 2 of CC2, and is transmitted in subframe 1 of CC1, the delay is 0.5 ms;

If the downlink data arrives in subframe 3 of CC2, and is transmitted in subframe 4 of CC2, the delay is 0.5 ms;

If the downlink data arrives in subframe 4 of CC2, and is transmitted in subframe 5 of CC2, the delay is 0.5 ms;

If the downlink data arrives in subframe 5 of CC2 and is transmitted in subframe 6 of CC2, the delay is 0.5 ms;

If the downlink data arrives in subframe 6 of CC2, and is transmitted in subframe 5 of CC1, the delay is 0.5 ms;

If the downlink data arrives in subframe 7 of CC2, and is transmitted in subframe 6 of CC1, the delay is 0.5 ms;

If the downlink data arrives in subframe 8 of CC2, and is transmitted in subframe 9 of CC2, the delay is 0.5 ms;

If the downlink data arrives in subframe 9 of CC2 and is transmitted in subframe 0 of CC2, the delay is 0.5 ms;

Therefore, the frame alignment delay of the downlink of the carrier aggregation is the average value of the downlink data transmission delay, that is, 0.5 ms, and the total delay of the downlink is: the processing delay of the base station side is 1.5 ms + the frame alignment delay is 0.5 ms + the user The processing delay of the side is 1 ms + the duration of one TTI is 1 ms = 4 ms.

Uplink:

If the uplink data arrives in subframe 0 of CC1 and is transmitted in subframe 3 of CC2, assuming that it is necessary to wait for half of the length of TTI in subframe 0 of CC1, the delay is 0.5 ms;

For the same reason, if the uplink data arrives in subframe 1 of CC1 and is transmitted in subframe 2 of CC1, the delay is 0.5 ms;

If the uplink data arrives in subframe 2 of CC1, and is transmitted in subframe 3 of CC1, the delay is 0.5 ms;

If the uplink data arrives in subframe 3 of CC1, and is transmitted in subframe 4 of CC1, the delay is 0.5 ms;

If the uplink data arrives in subframe 4 of CC1, and is transmitted in subframe 7 of CC2, the delay is 0.5 ms;

If the uplink data arrives in subframe 5 of CC1, and is transmitted in subframe 8 of CC2, the delay is 0.5 ms;

If the uplink data arrives in subframe 6 of CC1, and is transmitted in subframe 7 of CC1, the delay is 0.5 ms;

If the uplink data arrives in subframe 7 of CC1, and is transmitted in subframe 8 of CC1, the delay is 0.5 ms;

If the uplink data arrives in subframe 8 of CC1, and is transmitted in subframe 9 of CC1, the delay is 0.5 ms;

If the uplink data arrives in subframe 9 of CC1 and is transmitted in subframe 2 of CC2, the delay is 0.5 ms;

Therefore, the frame alignment delay of the uplink of the carrier aggregation is the average of the delay of the uplink data transmission, that is, 0.5 ms, and the total delay of the uplink is: the processing delay of the base station side is 1.5 ms + the frame alignment delay is 0.5 ms+ The processing delay on the user side is 1 ms + the duration of one TTI is 1 ms = 4 ms.

In the first specific embodiment, the scheduling relationship between CC1 and CC2 is as follows:

CC1: Subframe 0 of CC1 is scheduled by subframe 0 of CC1, subframe 1 of CC1 is scheduled by subframe 1 of CC1, subframe 2 of CC1 is scheduled by subframe 0 of CC2, and subframe 3 of CC1 is sub-frame of CC2 Frame 1 scheduling, subframe 4 of CC1 is scheduled by subframe 0 of CC1, subframe 5 of CC1 is scheduled by subframe 5 of CC1, subframe 6 of CC1 is scheduled by subframe 6 of CC1, and subframe 7 of CC1 is scheduled by CC2 Subframe 5 scheduling, subframe 8 of CC1 is scheduled by subframe 6 of CC2, and subframe 9 of CC1 is scheduled by subframe 5 of CC1.

CC2: Subframe 0 of CC2 is scheduled by subframe 0 of CC2, subframe 1 of CC2 is scheduled by subframe 1 of CC2, subframe 2 of CC2 is scheduled by subframe 6 of CC1, and subframe 3 of CC2 is sub-frame of CC2 Frame 9 scheduling, subframe 4 of CC2 is scheduled by subframe 4 of CC2, subframe 5 of CC2 is scheduled by subframe 5 of CC2, subframe 6 of CC2 is scheduled by subframe 6 of CC2, and subframe 7 of CC2 is scheduled by CC1 Subframe 1 scheduling, subframe 8 of CC2 is scheduled by subframe 4 of CC2, and subframe 9 of CC2 is scheduled by subframe 9 of CC2.

In the second embodiment, it is assumed that the component carrier CC1 adopts the frame configuration 6, the component carrier CC2 adopts the frame configuration 6, and the CC2 advances 2 subframes with respect to CC1 or CC1 delays 2 subframes with respect to CC2, that is, the offset of the frame start time. The amount is 2 subframes, as shown in FIG. 8 is a schematic diagram of carrier aggregation of frame configuration 6 and frame configuration 6. The same as the analysis process in the first embodiment, it can be seen that the total delay of the carrier aggregation downlink in the second embodiment is 4.1 ms, and the total delay of the carrier aggregation uplink is 4.1 ms.

In the second embodiment, in the case of supporting cross-carrier scheduling, the scheduling relationship is as follows:

CC1: Subframe 0 of CC1 is scheduled by subframe 0 of CC1, subframe 1 of CC1 is scheduled by subframe 1 of CC1, subframe 2 of CC1 is scheduled by subframe 0 of CC2, and subframe 3 of CC1 is sub-frame of CC2 Frame 1 Scheduling, subframe 4 of CC1 is scheduled by subframe 0 of CC1, subframe 5 of CC1 is scheduled by subframe 5 of CC1, subframe 6 of CC1 is scheduled by subframe 6 of CC1, and subframe 7 of CC1 is sub-frame of CC2 Frame 5 scheduling, subframe 8 of CC1 is scheduled by subframe 6 of CC2, and subframe 9 of CC1 is scheduled by subframe 9 of CC1 or subframe 1 of CC2.

CC2: Subframe 0 of CC2 is scheduled by subframe 0 of CC2, subframe 1 of CC2 is scheduled by subframe 1 of CC2 or subframe 9 of CC1, and subframe 2 of CC2 is scheduled by subframe 6 of CC1, the sub-frame of CC2 Frame 3 is scheduled by subframe 9 of CC2, subframe 4 of CC2 is scheduled by subframe 0 of CC2, subframe 5 of CC2 is scheduled by subframe 5 of CC2, and subframe 6 of CC2 is scheduled by subframe 6 of CC2, CC2 Subframe 7 is scheduled by subframe 1 of CC1, subframe 8 of CC2 is scheduled by subframe 1 of CC1, and subframe 9 of CC2 is scheduled by subframe 9 of CC2.

In the third embodiment, it is assumed that the component carrier CC1 adopts the frame configuration 2, the component carrier CC2 adopts the frame configuration 0, and the CC2 is advanced by 3 subframes relative to the CC1 or the CC1 is delayed by 3 subframes relative to the CC2, as shown in FIG. Schematic diagram of carrier aggregation for configuration 2 and frame configuration 0. The same as the analysis process in the first embodiment, it can be seen that in the third embodiment, the total delay of the carrier aggregation downlink is 4.1 ms, and the total delay of the carrier aggregation uplink is 4.2 ms.

In the third embodiment, in the case of supporting cross-carrier scheduling, the scheduling relationship is as follows:

CC1: Subframe 0 of CC1 is scheduled by subframe 0 of CC1, subframe 1 of CC1 is scheduled by subframe 1 of CC1, subframe 2 of CC1 is scheduled by subframe 1 of CC2, and subframe 3 of CC1 is sub-frame of CC1 Frame 3 or subframe 2 of CC2 is scheduled, subframe 4 of CC1 is scheduled by subframe 4 of CC1, subframe 5 of CC1 is scheduled by subframe 5 of CC1, and subframe 6 of CC1 is scheduled by subframe 6 of CC1, CC1 The subframe 7 is scheduled by subframe 3 of CC1 or subframe 6 of CC2, subframe 8 of CC1 is scheduled by subframe 8 of CC1 or subframe 1 of CC2, and subframe 9 of CC1 is scheduled by subframe 9 of CC1.

CC2: Subframe 0 of CC2 is scheduled by subframe 0 of CC2, subframe 1 of CC2 is scheduled by subframe 1 of CC2 or subframe 8 of CC1, and subframe 2 of CC2 is scheduled by subframe 6 of CC1, the sub-frame of CC2 Frame 3 is scheduled by subframe 6 of CC1, subframe 4 of CC2 is scheduled by subframe 0 of CC2, subframe 5 of CC2 is scheduled by subframe 5 of CC2, and subframe 6 of CC2 is subframe 6 of CC2 or CC1 Subframe 3 scheduling, subframe 7 of CC2 is scheduled by subframe 0 of CC1, and subframe 8 of CC2 is scheduled by subframe 1 of CC1, Subframe 9 of CC2 is scheduled by subframe 5 of CC2.

In the fourth embodiment, it is assumed that the component carrier CC1 adopts the frame configuration 3, the component carrier CC2 adopts the frame configuration 0, and the CC2 is advanced by 2 subframes relative to the CC1 or the CC1 is delayed by 2 subframes relative to the CC2, as shown in FIG. Schematic diagram of carrier aggregation for configuration 3 and frame configuration 0. The same as the analysis process in the first embodiment, it can be seen that the total delay of the carrier aggregation downlink in the fourth embodiment is 4.1 ms, and the total delay of the carrier aggregation uplink is 4.3 ms.

In the fourth embodiment, in the case of supporting cross-carrier scheduling, the scheduling relationship is as follows:

CC1: Subframe 0 of CC1 is scheduled by subframe 0 of CC1, subframe 1 of CC1 is scheduled by subframe 1 of CC1, and subframe 2 of CC1 is scheduled by subframe 0 of CC2 or subframe 8 of CC1, the sub-frame of CC1 Frame 3 is scheduled by subframe 1 of CC2 or subframe 9 of CC1, subframe 4 of CC1 is scheduled by subframe 0 of CC1, subframe 5 of CC1 is scheduled by subframe 5 of CC1, and subframe 6 of CC1 is scheduled by CC1 Subframe 6 is scheduled, subframe 7 of CC1 is scheduled by subframe 7 of CC1, subframe 8 of CC1 is scheduled by subframe 8 of CC1 or subframe 0 of CC2, and subframe 9 of CC1 is subframe 9 or CC2 of CC1 Subframe 1 scheduling.

CC2: Subframe 0 of CC2 is scheduled by subframe 0 of CC2 or subframe 8 of CC1, subframe 1 of CC2 is scheduled by subframe 1 of CC2 or subframe 9 of CC1, and subframe 2 of CC2 is subframe of CC1 6 scheduling, subframe 3 of CC2 is scheduled by subframe 7 of CC1, subframe 4 of CC2 is scheduled by subframe 0 of CC2 or subframe 8 of CC1, subframe 5 of CC2 is scheduled by subframe 5 of CC2, CC2 Subframe 6 is scheduled by subframe 6 of CC2, subframe 7 of CC2 is scheduled by subframe 1 of CC1, subframe 8 of CC2 is scheduled by subframe 1 of CC1, and subframe 9 of CC2 is scheduled by subframe 5 of CC2.

In the fifth embodiment, it is assumed that the component carrier CC1 adopts the frame configuration 4, the component carrier CC2 adopts the frame configuration 0, and the CC2 is advanced by 2 subframes relative to the CC1 or the CC1 is delayed by 2 subframes relative to the CC2, as shown in FIG. Schematic diagram of carrier aggregation for configuration 4 and frame configuration 0. The same as the analysis process in the first embodiment, it can be seen that in the fifth embodiment, the total delay of the carrier aggregation downlink is 4.1 ms, and the total delay of the carrier aggregation uplink is 4.4 ms.

In the fifth specific embodiment, in the case of supporting cross-carrier scheduling, the scheduling relationship is as follows:

CC1: Subframe 0 of CC1 is scheduled by subframe 0 of CC1, subframe 1 of CC1 is scheduled by subframe 1 of CC1, and subframe 2 of CC1 is scheduled by subframe 0 of CC2 or subframe 8 of CC1, the sub-frame of CC1 Frame 3 It is scheduled by subframe 1 of CC2 or subframe 9 of CC1, subframe 4 of CC1 is scheduled by subframe 4 of CC1 or subframe 6 of CC2, subframe 5 of CC1 is scheduled by subframe 5 of CC1, subframe of CC1 6 is scheduled by subframe 6 of CC1, subframe 7 of CC1 is scheduled by subframe 7 of CC1, subframe 8 of CC1 is scheduled by subframe 8 of CC1 or subframe 0 of CC2, and subframe 9 of CC1 is sub-frame of CC1 Frame 9 or subframe 1 scheduling of CC2.

CC2: Subframe 0 of CC2 is scheduled by subframe 0 of CC2 or subframe 8 of CC1, subframe 1 of CC2 is scheduled by subframe 1 of CC2 or subframe 9 of CC1, and subframe 2 of CC2 is subframe of CC1 6 scheduling, subframe 3 of CC2 is scheduled by subframe 7 of CC1, subframe 4 of CC2 is scheduled by subframe 0 of CC2 or subframe 8 of CC1, subframe 5 of CC2 is scheduled by subframe 5 of CC2, CC2 Subframe 6 is scheduled by subframe 6 of CC2 or subframe 4 of CC1, subframe 7 of CC2 is scheduled by subframe 1 of CC1, subframe 8 of CC2 is scheduled by subframe 1 of CC1, and subframe 9 of CC2 is scheduled by subframe 1. Subframe 5 scheduling of CC2.

In the sixth embodiment, it is assumed that the component carrier CC1 adopts frame configuration 5, the component carrier CC2 adopts frame configuration 0, and CC2 advances 0 or 2 subframes with respect to CC1, or

CC1 delays

0 or 2 subframes with respect to CC2. FIG. 13 is a schematic diagram of carrier aggregation of frame configuration 5 and frame configuration 0 when CC2 is advanced by 0 subframes with respect to CC1. Similar to the analysis process in the first embodiment, the total downlink delay of carrier aggregation in the sixth embodiment is 4.1 ms, and the total delay of carrier aggregation uplink is 4.6 ms.

In the case of supporting cross-carrier scheduling, the scheduling relationship is as follows:

CC1: Subframe 0 of CC1 is scheduled by subframe 0 of CC1 or subframe 0 of CC2, subframe 1 of CC1 is scheduled by subframe 1 of CC1 or subframe 1 of CC2, and subframe 2 of CC1 is subframe of CC1 8 scheduling, subframe 3 of CC1 is scheduled by subframe 3 of CC1, subframe 4 of CC1 is scheduled by subframe 4 of CC1, and subframe 5 of CC1 is scheduled by subframe 5 of CC1 or subframe 5 of CC2, CC1 Subframe 6 is scheduled by subframe 6 of CC1 or subframe 6 of CC2, subframe 7 of CC1 is scheduled by subframe 7 of CC1, subframe 8 of CC1 is scheduled by subframe 8 of CC1, and subframe 9 of CC1 is composed of CC1. Subframe 9 scheduling.

CC2: Subframe 0 of CC2 is scheduled by subframe 0 of CC2 or subframe 0 of CC1, subframe 1 of CC2 is scheduled by subframe 1 of CC2 or subframe 1 of CC1, and subframe 2 of CC2 is subframe of CC1 8 scheduling, subframe 3 of CC2 is scheduled by subframe 9 of CC1, subframe 4 of CC2 is subframe 0 or CC1 of CC2 Subframe 0 scheduling, subframe 5 of CC2 is scheduled by subframe 5 of CC2 or subframe 5 of CC1, subframe 6 of CC2 is scheduled by subframe 6 of CC2 or subframe 6 of CC1, subframe 7 of CC2 It is scheduled by subframe 3 of CC1, subframe 8 of CC2 is scheduled by subframe 4 of CC1, and subframe 9 of CC2 is scheduled by subframe 5 of CC2 or subframe 5 of CC1.

The frame configuration combination of the two component carriers provided in the first to sixth embodiments may be divided into a plurality of sets according to the offset offset of the frame start time, and the frame configuration having the offset of the same frame start time The combination is divided into the same set, and two sets are obtained, which are respectively represented as follows:

Set 1, offset=2: {CC1 configuration 0, CC2 configuration 1}, {CC1 configuration 6, CC2 configuration 6}, {CC1 configuration 3, CC2 configuration 0}, {CC1 configuration 4, CC2 configuration 0}, {CC1 configuration 5, CC2 configuration 0};

Set 2, offset=3: {CC1 configuration 2, CC2 configuration 0}.

The frame configuration combination of the two component carriers provided in the first to sixth embodiments may be divided into multiple sets according to whether at least one identical frame configuration is included, and at least one of each frame configuration combination belonging to the same set The same component carrier has the same frame configuration and gets 3 sets.

Expressed as follows:

Set 1: {CC1 configuration 3, CC2 configuration 0}, offset=2; {CC1 configuration 4, CC2 configuration 0}, offset=2; {CC1 configuration 5, CC2 configuration 0}, offset=2; {CC1 configuration 2, CC2 configuration 0}, offset=3;

Set 2: {CC1 configuration 0, CC2 configuration 1}, offset=2;

Set 3: {CC1 configuration 6, CC2 configuration 6}, offset=2.

The communication delay of the aggregation of the two component carriers in the first to sixth embodiments is compared with the communication delay of the single carrier, and the frame configuration of the component carrier and the offset of the frame start time may be configured in the carrier aggregation scenario. To achieve the effect of reducing the delay, the delay is as shown in Table 2:

Table 2

In the seventh to twelfth and sixteenth to twentieth embodiments, it is assumed that the TTI is 0.5 ms, and the processing delay on the base station side is assumed to be 0.2 ms, and the processing delay on the user side is 0.2 ms.

In the seventh embodiment, it is assumed that the component carrier CC1 adopts frame configuration 0, the component carrier CC2 adopts frame configuration 1, and CC2 advances 4 subframes with respect to CC1, or CC1 delays 4 subframes with respect to CC2, that is, the frame start time is biased. The shift amount is 4 subframes, as shown in FIG. 14 is a carrier aggregation diagram of frame configuration 0 and frame configuration 1 of 0.5 ms TTI, where 0-9 is a subframe included in each field, and each subframe is 0.5 ms.

Downlink:

If the downlink data arrives in subframe 0 of CC2 and is transmitted in subframe 1 of CC2, it is assumed that half of the duration of the TTI needs to be waited in subframe 0 of CC2, and the delay is 0.25 ms;

For the same reason, if the downlink data arrives in subframe 1 of CC2 and is transmitted in subframe 2 of CC2, the delay is 0.25 ms;

If the downlink data arrives in subframe 2 of CC2, and is transmitted in subframe 3 of CC2, the delay is 0.25 ms;

If the downlink data arrives in subframe 3 of CC2, and is transmitted in subframe 0 of CC1, the delay is 0.25 ms;

If the downlink data arrives in subframe 4 of CC2, and is transmitted in subframe 1 of CC1, the delay is 0.25 ms;

If the downlink data arrives in subframe 5 of CC2, and is transmitted in subframe 2 of CC1, the delay is 0.25 ms;

If the downlink data arrives in subframe 6 of CC2, and is transmitted in subframe 3 of CC1, the delay is 0.25 ms;

If the downlink data arrives in subframe 7 of CC2, and is transmitted in subframe 8 of CC2, the delay is 0.25 ms;

If the downlink data arrives in subframe 8 of CC2, and is transmitted in subframe 9 of CC2, the delay is 0.25 ms;

If the downlink data arrives in subframe 9 of CC2, and is transmitted in subframe 0 of CC2, the delay is 0.25 ms;

Therefore, the frame alignment delay of the downlink of the carrier aggregation is the average value of the downlink data transmission delay, that is, 0.25 ms, and the total delay of the downlink is: the processing delay of the base station side is 0.2 ms + the frame alignment delay is 0.25 ms + the user The processing delay of the side is 0.2 ms + the duration of one TTI is 0.5 ms = 1.15 ms.

Uplink:

If the uplink data arrives in subframe 0 of CC2 and is transmitted in subframe 4 of CC2, it is assumed that in the subframe 0 of CC1, it is necessary to wait for half of the length of the TTI, that is, 0.25 ms, and the delay is: 0.25 ms + the duration of 3 subframes. 1.5ms=1.75ms;

For the same reason, if the uplink data arrives in subframe 1 of CC2 and is transmitted in subframe 4 of CC2, the delay is 1.25 ms;

If the uplink data arrives in subframe 2 of CC2 and is transmitted in subframe 4 of CC2, the delay is 0.75 ms;

If the uplink data arrives in subframe 3 of CC2, and is transmitted in subframe 4 of CC2, the delay is 0.25 ms;

If the uplink data arrives in subframe 4 of CC2, and is transmitted in subframe 5 of CC2, the delay is 0.25 ms;

If the uplink data arrives in subframe 5 of CC2 and is transmitted in subframe 6 of CC2, the delay is 0.25 ms;

If the uplink data arrives in subframe 6 of CC2, and is transmitted in subframe 7 of CC2, the delay is 0.25 ms;

If the uplink data arrives in subframe 7 of CC2, and is transmitted in subframe 4 of CC1, the delay is 0.25 ms;

If the uplink data arrives in subframe 8 of CC2, and is transmitted in subframe 5 of CC1, the delay is 0.25 ms;

If the uplink data arrives in subframe 9 of CC2, and is transmitted in subframe 6 of CC1, the delay is 0.25 ms;

Therefore, the frame alignment delay of the uplink of the carrier aggregation is the average of the delay of the uplink data transmission, that is, 0.55 ms, and the total delay of the uplink is: the processing delay of the base station side is 0.2 ms + the frame alignment delay is 0.55 ms+ The processing delay on the user side is 0.2 ms + the duration of one TTI is 0.5 ms = 1.45 ms.

CC1: Subframe 0 of CC1 is scheduled by subframe 0 of CC1, subframe 1 of CC1 is scheduled by subframe 1 of CC1, subframe 2 of CC1 is scheduled by subframe 2 of CC1, and subframe 3 of CC1 is sub-frame of CC1 Frame 3 scheduling, subframe 4 of CC1 is scheduled by subframe 0 of CC1, subframe 5 of CC1 is scheduled by subframe 1 of CC1, subframe 6 of CC1 is scheduled by subframe 2 of CC1, and subframe 7 of CC1 is scheduled by CC1 Subframe 3 scheduling, subframe 8 of CC1 is scheduled by subframe 8 of CC2, and subframe 9 of CC1 is scheduled by subframe 9 of CC2.

CC2: Subframe 0 of CC2 is scheduled by subframe 0 of CC2, subframe 1 of CC2 is scheduled by subframe 1 of CC2, subframe 2 of CC2 is scheduled by subframe 2 of CC2, and subframe 3 of CC2 is sub-frame of CC2 Frame 3 scheduling, subframe 4 of CC2 is scheduled by subframe 0 of CC2, subframe 5 of CC2 is scheduled by subframe 1 of CC2, subframe 6 of CC2 is scheduled by subframe 2 of CC2, and subframe 7 of CC2 is scheduled by CC2 Subframe 3 scheduling, subframe 8 of CC2 is scheduled by subframe 8 of CC2, and subframe 9 of CC2 is scheduled by subframe 9 of CC2.

In the eighth embodiment, it is assumed that the component carrier CC1 adopts frame configuration 2, the component carrier CC2 adopts frame configuration 0, and CC2 advances 6 subframes with respect to CC1, or CC1 is delayed by 6 subframes with respect to CC2, as shown in FIG. A schematic diagram of carrier aggregation of frame configuration 2 and frame configuration 0 is shown, where 0-9 is a subframe included in each field, and each subframe is 0.5 ms. As with the analysis process of the seventh embodiment, the total delay of the downlink of carrier aggregation is 1.3 ms. The total delay of the uplink of carrier aggregation is 1.3 ms.

CC1: Subframe 0 of CC1 is scheduled by subframe 0 of CC1, subframe 1 of CC1 is scheduled by subframe 1 of CC1, subframe 2 of CC1 is scheduled by subframe 2 of CC1, and subframe 3 of CC1 is sub-frame of CC1 Frame 3 Scheduling, subframe 4 of CC1 is scheduled by subframe 0 of CC1, subframe 5 of CC1 is scheduled by subframe 1 of CC1, and subframe 6 of CC1 is scheduled by subframe 6 of CC1 or subframe 2 of CC2, the child of CC1 Frame 7 is scheduled by subframe 7 of CC1 or subframe 3 of CC2, subframe 8 of CC1 is scheduled by subframe 8 of CC1, and subframe 9 of CC1 is scheduled by subframe 9 of CC1.

CC2: Subframe 0 of CC2 is scheduled by subframe 0 of CC2, subframe 1 of CC2 is scheduled by subframe 1 of CC2, and subframe 2 of CC2 is scheduled by subframe 2 of CC2 or subframe 6 of CC1, the sub-frame of CC2 Frame 3 is scheduled by subframe 3 of CC2 or subframe 7 of CC1, subframe 4 of CC2 is scheduled by subframe 0 of CC2, subframe 5 of CC2 is scheduled by subframe 1 of CC2, and subframe 6 of CC2 is composed of CC2 Subframe 2 or subframe 6 of CC1 is scheduled, subframe 7 of CC2 is scheduled by subframe 3 of CC2 or subframe 7 of CC1, subframe 8 of CC2 is scheduled by subframe 8 of CC1, and subframe 9 of CC2 is composed of CC1 Subframe 9 scheduling.

In the ninth embodiment, it is assumed that the component carrier CC1 adopts the frame configuration 3, the component carrier CC2 adopts the frame configuration 0, and the CC2 advances 4 subframes relative to the CC1, or the CC1 is delayed by 4 subframes relative to the CC2, as shown in FIG. A carrier aggregation diagram of frame configuration 3 and frame configuration 0 for a 0.5 ms TTI, where 0 to 19 are subframes included in each frame, and each subframe is 0.5 ms. Similar to the analysis process in the seventh embodiment, the total delay of carrier aggregation downlink is 1.225 ms, and the total delay of carrier aggregation uplink is 1.4 ms.

CC1: Subframe 0 of CC1 is scheduled by subframe 0 of CC1, subframe 1 of CC1 is scheduled by subframe 1 of CC1, subframe 2 of CC1 is scheduled by subframe 2 of CC1, and subframe 3 of CC1 is sub-frame of CC1 Frame 3 scheduling, subframe 4 of CC1 is scheduled by subframe 0 of CC1, subframe 5 of CC1 is scheduled by subframe 1 of CC1, subframe 6 of CC1 is scheduled by subframe 2 of CC1, and subframe 7 of CC1 is scheduled by CC1 Subframe 3 scheduling, subframe 8 of CC1 is scheduled by subframe 3 of CC1, subframe 9 of CC1 is scheduled by subframe 3 of CC1, and subframes 10-15 are each self-scheduled, and subframe 16 of CC1 is composed of CC1. Subframe 16 or subframe 0 scheduling of CC2, subframe 17 of CC1 is scheduled by subframe 17 of CC1 or subframe 1 of CC2, and subframe 18 of CC1 is scheduled by subframe 18 of CC1 or subframe 2 of CC2, Subframe 19 of CC1 is scheduled by subframe 19 of CC1 or subframe 3 of CC2.

CC2: Subframe 0 of CC2 is scheduled by subframe 0 of CC2 or subframe 16 of CC1, the child of CC2 Frame 1 is scheduled by subframe 1 of CC2 or subframe 17 of CC1, subframe 2 of CC2 is scheduled by subframe 2 of CC2 or subframe 18 of CC1, and subframe 3 of CC2 is subframe 3 of CC2 or a sub-frame of CC1 Frame 19 scheduling, subframe 4 of CC2 is scheduled by subframe 0 of CC2 or subframe 16 of CC1, subframe 5 of CC2 is scheduled by subframe 1 of CC2 or subframe 17 of CC1, and subframe 6 of CC2 is composed of CC2 Subframe 2 or subframe 18 of CC1 is scheduled, subframe 7 of CC2 is scheduled by subframe 3 of CC2 or subframe 19 of CC1, subframe 8 of CC2 is scheduled by subframe 0 of CC1, and subframe 9 of CC2 is composed of CC1 Subframe 1 scheduling, subframe 10 of CC2 is scheduled by subframe 10 of CC2, subframe 11 of CC2 is scheduled by subframe 11 of CC2, subframe 12 of CC2 is scheduled by subframe 12 of CC2, subframe 13 of CC2 It is scheduled by subframe 13 of CC2, subframe 14 of CC2 is scheduled by subframe 10 of CC2, subframe 15 of CC2 is scheduled by subframe 11 of CC2, subframe 16 of CC2 is scheduled by subframe 12 of CC2, and child of CC2 Frame 17 is scheduled by subframe 13 of CC2, subframe 18 of CC2 is scheduled by subframe 10 of CC1, and subframe 19 of CC2 is scheduled by subframe 11 of CC1.

In the tenth embodiment, the TTI is 0.5 ms, assuming that the component carrier CC1 adopts the frame configuration 4, the component carrier CC2 adopts the frame configuration 0, and the CC2 advances 6 subframes relative to the CC1, or the CC1 delays 6 subframes relative to the CC2, such as FIG. 17 is a schematic diagram of carrier aggregation of frame configuration 4 and frame configuration 0 of 0.5 ms TTI, where 0 to 19 are subframes included in each frame, and each subframe is 0.5 ms. The same as the analysis process in the seventh embodiment, the total delay of the carrier aggregation downlink is 1.15 ms, and the total delay of the carrier aggregation uplink is 1.4 ms.

CC1: Subframe 0 of CC1 is scheduled by subframe 0 of CC1, subframe 1 of CC1 is scheduled by subframe 1 of CC1, subframe 2 of CC1 is scheduled by subframe 2 of CC1, and subframe 3 of CC1 is sub-frame of CC1 Frame 3 scheduling, subframe 4 of CC1 is scheduled by subframe 0 of CC1, subframe 5 of CC1 is scheduled by subframe 1 of CC1, subframe 6 of CC1 is scheduled by subframe 2 of CC1, and subframe 7 of CC1 is scheduled by CC1 Subframe 3 scheduling, subframe 8 of CC1 is scheduled by subframe 8 of CC1, subframe 9 of CC1 is scheduled by subframe 9 of CC1, subframe 10 of CC1 is scheduled by subframe 10 of CC1, subframe 11 of CC1 It is scheduled by subframe 11 of CC1, subframe 12 of CC1 is scheduled by subframe 12 of CC1, subframe 13 of CC1 is scheduled by subframe 13 of CC1, and subframe 14 of CC1 is subframe 14 of CC1 or subframe of CC2 0 scheduling, subframe 15 of CC1 is scheduled by subframe 15 of CC1 or subframe 1 of CC2, and subframe 16 of CC1 is composed of child of CC1 Frame 16 or subframe 2 scheduling of CC2, subframe 17 of CC1 is scheduled by subframe 17 of CC1 or subframe 3 of CC2, subframe 18 of CC1 is scheduled by subframe 18 of CC1, and subframe 19 of CC1 is composed of CC1 Subframe 19 is scheduled.

CC2: Subframe 0 of CC2 is scheduled by subframe 0 of CC2 or subframe 14 of CC1, subframe 1 of CC2 is scheduled by subframe 1 of CC2 or subframe 15 of CC1, and subframe 2 of CC2 is subframe of CC2 2 or subframe 16 of CC1 is scheduled, subframe 3 of CC2 is scheduled by subframe 3 of CC2 or subframe 17 of CC1, and subframe 4 of CC2 is scheduled by subframe 14 of CC1 or subframe 0 of CC2, the child of CC2 Frame 5 is scheduled by subframe 15 of CC1 or subframe 1 of CC2, subframe 6 of CC2 is scheduled by subframe 16 of CC1 or subframe 2 of CC2, and subframe 7 of CC2 is composed of subframe 17 of CC1 or child of CC2 Frame 3 scheduling, subframe 8 of CC2 is scheduled by subframe 118 of CC1, subframe 9 of CC2 is scheduled by subframe 19 of CC1, subframe 10 of CC2 is scheduled by subframe 10 of CC2, and subframe 11 of CC2 is composed of CC2 Subframe 11 scheduling, subframe 12 of CC2 is scheduled by subframe 12 of CC2, subframe 13 of CC2 is scheduled by subframe 13 of CC2, subframe 14 of CC2 is scheduled by subframe 10 of CC2, subframe 15 of CC2 It is scheduled by subframe 11 of CC2, subframe 16 of CC2 is scheduled by subframe 16 of CC2, subframe 17 of CC2 is scheduled by subframe 13 of CC2, subframe 18 of CC2 is scheduled by subframe 8 of CC1, child of CC2 Frame 19 is scheduled by subframe 9 of CC1.

In the eleventh embodiment, it is assumed that the component carrier CC1 adopts frame configuration 5, the component carrier CC2 adopts frame configuration 0, and CC2 advances 6 subframes with respect to CC1, or CC1 delays 6 subframes with respect to CC2, as shown in FIG. A carrier aggregation diagram of frame configuration 5 and frame configuration 0 for a frame of 0.5 ms TTI, where 0 to 19 are subframes included in each frame, and each subframe is 0.5 ms. The same as the analysis process of the seventh embodiment, the total delay of the carrier aggregation downlink is 1.15 ms, and the total delay of the carrier aggregation uplink is 1.375 ms.

CC1: Subframe 0 of CC1 is scheduled by subframe 0 of CC1, subframe 1 of CC1 is scheduled by subframe 1 of CC1, subframe 2 of CC1 is scheduled by subframe 2 of CC1, and subframe 3 of CC1 is sub-frame of CC1 Frame 3 scheduling, subframe 4 of CC1 is scheduled by subframe 0 of CC1, subframe 5 of CC1 is scheduled by subframe 1 of CC1, and subframe 6 of CC1 is scheduled by subframe 6 of CC1 or subframe 12 of CC2, CC1 Subframe 7 is scheduled by subframe 7 of CC1 or subframe 13 of CC2, and subframe 8 of CC1 is scheduled by subframe 8 of CC1. Subframe 9 of CC1 is scheduled by subframe 9 of CC1, subframe 10 of CC1 is scheduled by subframe 10 of CC1, subframe 11 of CC1 is scheduled by subframe 11 of CC1, and subframe 12 of CC1 is subframe 12 of CC1. Scheduling, subframe 13 of CC1 is scheduled by subframe 13 of CC1, subframe 14 of CC1 is scheduled by subframe 14 of CC1 or subframe 0 of CC2, and subframe 15 of CC1 is used by subframe 15 of CC1 or subframe of CC2 1 scheduling, subframe 16 of CC1 is scheduled by subframe 16 of CC1 or subframe 2 of CC2, subframe 17 of CC1 is scheduled by subframe 17 of CC1 or subframe 3 of CC2, and subframe 18 of CC1 is sub-frame of CC1 Frame 18 is scheduled, and subframe 19 of CC1 is scheduled by subframe 19 of CC1.

CC2: Subframe 0 of CC2 is scheduled by subframe 0 of CC2 or subframe 14 of CC1, subframe 1 of CC2 is scheduled by subframe 1 of CC2 or subframe 15 of CC1, and subframe 2 of CC2 is subframe of CC2 2 or subframe 16 of CC1 is scheduled, subframe 3 of CC2 is scheduled by subframe 3 of CC2 or subframe 17 of CC1, and subframe 4 of CC2 is scheduled by subframe 14 of CC1 or subframe 0 of CC2, the child of CC2 Frame 5 is scheduled by subframe 15 of CC1 or subframe 1 of CC2, subframe 6 of CC2 is scheduled by subframe 16 of CC1 or subframe 2 of CC2, and subframe 7 of CC2 is composed of subframe 17 of CC1 or child of CC2 Frame 3 scheduling, subframe 8 of CC2 is scheduled by subframe 18 of CC1, subframe 9 of CC2 is scheduled by subframe 19 of CC1, subframe 10 of CC2 is scheduled by subframe 10 of CC2, and subframe 11 of CC2 is reserved by CC2 Subframe 11 scheduling, subframe 12 of CC2 is scheduled by subframe 12 of CC2 or subframe 6 of CC1, subframe 13 of CC2 is scheduled by subframe 13 of CC2 or subframe 7 of CC1, subframe 14 of CC2 It is scheduled by subframe 10 of CC2, subframe 15 of CC2 is scheduled by subframe 11 of CC2, subframe 16 of CC2 is scheduled by subframe 6 of CC1 or subframe 12 of CC2, and subframe 17 of CC2 is subframe of CC1 7 or subframe 2 of CC2 is scheduled, subframe 18 of CC2 is scheduled by subframe 8 of CC1, and subframe 19 of CC2 is scheduled by subframe 9 of CC1.

In the twelfth embodiment, it is assumed that the component carrier CC1 adopts the frame configuration 6, the component carrier CC2 adopts the frame configuration 6, and the CC2 advances 6 subframes relative to the CC1, or the CC1 is delayed by 6 subframes relative to the CC2, as shown in FIG. A carrier aggregation diagram of frame configuration 6 and frame configuration 6 for a 0.5 ms TTI, where 0 to 19 are subframes included in each frame, and each subframe is 0.5 ms. The same as the analysis process in the seventh embodiment, the total delay of carrier aggregation downlink is 1.15 ms, and the total delay of carrier aggregation uplink is 1.15 ms.

CC1: Subframe 0 of CC1 is scheduled by subframe 0 of CC1, subframe 1 of CC1 is scheduled by subframe 1 of CC1, subframe 2 of CC1 is scheduled by subframe 2 of CC1, and subframe 3 of CC1 is sub-frame of CC1 Frame 3 scheduling, subframe 4 of CC1 is scheduled by subframe 0 of CC1, subframe 5 of CC1 is scheduled by subframe 1 of CC1, subframe 6 of CC1 is scheduled by subframe 2 of CC1, and subframe 7 of CC1 is scheduled by CC1 Subframe 3 scheduling, subframe 8 of CC1 is scheduled by subframe 10 of CC2, subframe 9 of CC1 is scheduled by subframe 11 of CC2, subframe 10 of CC1 is scheduled by subframe 10 of CC1, subframe 11 of CC1 It is scheduled by subframe 11 of CC1, subframe 12 of CC1 is scheduled by subframe 12 of CC1 or subframe 18 of CC2, and subframe 13 of CC1 is scheduled by subframe 13 of CC1 or subframe 19 of CC2, subframe of CC1 14 is scheduled by subframe 10 of CC1, subframe 15 of CC1 is scheduled by subframe 11 of CC1, subframe 16 of CC1 is scheduled by subframe 12 of CC1 or subframe 18 of CC2, and subframe 17 of CC1 is sub-frame of CC1 Frame 13 or subframe 19 of CC2 is scheduled, subframe 18 of CC1 is scheduled by subframe 18 of CC1, and subframe 19 of CC1 is scheduled by subframe 19 of CC1.

CC2: Subframe 0 of CC2 is scheduled by subframe 0 of CC2, subframe 1 of CC2 is scheduled by subframe 1 of CC2, subframe 2 of CC2 is scheduled by subframe 2 of CC2, and subframe 3 of CC2 is sub-frame of CC2 Frame 3 scheduling, subframe 4 of CC2 is scheduled by subframe 0 of CC2, subframe 5 of CC2 is scheduled by subframe 1 of CC2, subframe 6 of CC2 is scheduled by subframe 2 of CC2, and subframe 7 of CC2 is scheduled by CC2 Subframe 3 scheduling, subframe 8 of CC2 is scheduled by subframe 18 of CC1, subframe 9 of CC2 is scheduled by subframe 19 of CC1, subframe 10 of CC2 is scheduled by subframe 10 of CC2, subframe 11 of CC2 It is scheduled by subframe 11 of CC2, subframe 12 of CC2 is scheduled by subframe 12 of CC2, subframe 13 of CC2 is scheduled by subframe 13 of CC2, subframe 14 of CC2 is scheduled by subframe 10 of CC2, and child of CC2 Frame 15 is scheduled by subframe 11 of CC2, subframe 16 of CC2 is scheduled by subframe 12 of CC2, subframe 17 of CC2 is scheduled by subframe 13 of CC2, and subframe 18 of CC2 is scheduled by subframe 12 of CC1 or CC2 Subframe 18 is scheduled, and subframe 19 of CC2 is scheduled by subframe 13 of CC1 or subframe 19 of CC2.

The frame configuration combination of the two component carriers provided in the seventh to twelfth embodiments may be divided into a plurality of sets according to the offset offset of the frame start time, and the frames having the offset of the same frame start time The configuration combination is divided into the same set, and two sets are obtained, which are respectively represented as follows:

Set 1, offset=6: {CC1 configuration 2, CC2 configuration 0}, {CC1 configuration 4, CC2 configuration 0}, {CC1 configuration 5, CC2 configuration 0}, {CC1 configuration 6, CC2 configuration 0};

Set 2, offset=4: {CC1 configuration 0, CC2 configuration 1}, {CC1 configuration 3, CC2 configuration 0}.

The frame configuration combination of the two component carriers provided in the seventh to twelfth embodiments may be divided into multiple sets according to whether at least one identical frame configuration is included, and at least one of each frame configuration combination belonging to the same set An identical member carrier has the same frame configuration, and three sets are obtained, which are respectively represented as follows:

Set 1: {CC1 configuration 2, CC2 configuration 0}, offset = 6; {CC1 configuration 4, CC2 configuration 0}, offset = 6; {CC1 configuration 5, CC2 configuration 0}, offset = 6;; {CC1 configuration 3 , CC2 configuration 0}, offset = 4;

Set 2: {CC1 configuration 0, CC2 configuration 1}, offset=4;

Set 3: {CC1 configuration 6, CC2 configuration 6}, offset=6.

The communication delay of the aggregation of the two component carriers in the seventh to twelfth embodiments is compared with the communication delay of the single carrier. When the TTI is 0.5 ms, the frame configuration of the component carriers is configured in the carrier aggregation scenario. The offset of the frame start time can achieve the effect of reducing the delay. The delay pair is shown in Table 3:

table 3

In the thirteenth embodiment, it is assumed that the component carrier CC1 adopts the frame configuration 1, the component carrier CC2 adopts the frame configuration 1, and the CC2 is advanced by 2 subframes relative to the CC1 or the CC1 is delayed by 2 subframes relative to the CC2, that is, the frame start time is offset. The shift amount is 2 subframes, as shown in FIG. 24 is a schematic diagram of carrier aggregation of frame configuration 1 and frame configuration 1.

Similar to the analysis process in the first embodiment, it can be seen that the total delay of the carrier aggregation downlink in the thirteenth embodiment is 4 ms, and the total delay of the carrier aggregation uplink is 4.2 ms.

In the thirteenth embodiment, in the case of supporting cross-carrier scheduling, the scheduling relationship is as follows:

CC1: Subframe 0 of CC1 is scheduled by subframe 0 of CC1, subframe 1 of CC1 is scheduled by subframe 1 of CC1, subframe 2 of CC1 is scheduled by subframe 0 of CC2, and subframe 3 of CC1 is sub-frame of CC2 Frame 1 scheduling, subframe 4 of CC1 is scheduled by subframe 4 of CC1 or subframe 6 of CC2, subframe 5 of CC1 is scheduled by subframe 5 of CC1, and subframe 6 of CC1 is scheduled by subframe 6 of CC1, CC1 Subframe 7 is scheduled by subframe 5 of CC2, subframe 8 of CC1 is scheduled by subframe 6 of CC2, and subframe 9 of CC1 is scheduled by subframe 9 of CC1 or subframe 1 of CC2.

CC2: Subframe 0 of CC2 is scheduled by subframe 0 of CC2, subframe 1 of CC2 is scheduled by subframe 1 of CC2 or subframe 9 of CC1, and subframe 2 of CC2 is scheduled by subframe 6 of CC1, the sub-frame of CC2 Frame 3 is scheduled by subframe 9 of CC2, subframe 4 of CC2 is scheduled by subframe 4 of CC2, subframe 5 of CC2 is scheduled by subframe 5 of CC2, and subframe 6 of CC2 is scheduled by subframe 6 of CC2 or CC1 Subframe 4 scheduling, subframe 7 of CC2 is scheduled by subframe 1 of CC1, subframe 8 of CC2 is scheduled by subframe 4 of CC2, and subframe 9 of CC2 is scheduled by subframe 5 of CC2.

In the fourteenth embodiment, it is assumed that the component carrier CC1 adopts frame configuration 2, the component carrier CC2 adopts frame configuration 2, and CC2 advances 2 subframes with respect to CC1 or CC1 delays 2 subframes with respect to CC2. That is, the offset of the frame start time is 2 subframes, and as shown in FIG. 25, the carrier aggregation diagram of the frame configuration 2 and the frame configuration 2 is shown.

The same as the analysis process in the first embodiment, it can be seen that the total delay of the carrier aggregation downlink in the fourteenth embodiment is 4 ms, and the total delay of the carrier aggregation uplink is 4.8 ms.

In the fourteenth embodiment, in the case of supporting cross-carrier scheduling, the scheduling relationship is as follows:

CC1: Subframe 0 of CC1 is scheduled by subframe 0 of CC1, subframe 1 of CC1 is scheduled by subframe 1 of CC1, and subframe 2 of CC1 is scheduled by subframe 8 of CC1 or subframe 0 of CC2, the sub-frame of CC1 Frame 3 is scheduled by subframe 3 of CC1 or subframe 5 of CC2, subframe 4 of CC1 is scheduled by subframe 4 of CC1 or subframe 6 of CC2, and subframe 5 of CC1 is scheduled by subframe 5 of CC1, CC1 Subframe 6 is scheduled by subframe 6 of CC1 or subframe 8 of CC2, subframe 7 of CC1 is scheduled by subframe 3 of CC1 or subframe 5 of CC2, and subframe 8 of CC1 is subframe 8 of CC1 or CC2 Subframe 0 is scheduled, and subframe 9 of CC1 is scheduled by subframe 9 of CC1 or subframe 1 of CC2.

CC2: Subframe 0 of CC2 is scheduled by subframe 0 of CC2 or subframe 8 of CC1, subframe 1 of CC2 is scheduled by subframe 1 of CC2 or subframe 9 of CC1, and subframe 2 of CC2 is subframe of CC1 6 or subframe 2 of CC2 is scheduled, subframe 3 of CC2 is scheduled by subframe 3 of CC2 or subframe 1 of CC1, subframe 4 of CC2 is scheduled by subframe 4 of CC2, and subframe 5 of CC2 is sub-frame of CC2 Frame 5 or subframe 3 scheduling of CC1, subframe 6 of CC2 is scheduled by subframe 6 of CC2 or subframe 4 of CC1, subframe 7 of CC2 is scheduled by subframe 3 of CC2 and subframe 1 of CC1, CC2 Subframe 8 is scheduled by subframe 8 of CC2 or subframe 6 of CC1, and subframe 9 of CC2 is scheduled by subframe 9 of CC2.

In the fifteenth embodiment, it is assumed that the component carrier CC1 adopts the frame configuration 1, the component carrier CC2 adopts the frame configuration 2, and the CC2 is advanced by 2 subframes relative to the CC1 or the CC1 is delayed by 2 subframes relative to the CC2, that is, the frame start time is offset. The shift amount is 2 subframes, and as shown in FIG. 26 is a schematic diagram of carrier aggregation of frame configuration 1 and frame configuration 2.

The same as the analysis process in the first embodiment, it can be seen that the total delay of the carrier aggregation downlink in the fifteenth embodiment is 4 ms, and the total delay of the carrier aggregation uplink is 4.4 ms.

In the fifteenth embodiment, in the case of supporting cross-carrier scheduling, the scheduling relationship is as follows:

CC1: Subframe 0 of CC1 is scheduled by subframe 0 of CC1, and subframe 1 of CC1 is subframe 1 of CC1 or Subframe 3 scheduling of CC2, subframe 2 of CC1 is scheduled by subframe 0 of CC2, subframe 3 of CC1 is scheduled by subframe 9 of CC1 or subframe 1 of CC2, and subframe 4 of CC1 is subframe 4 of CC1 Or subframe 6 of CC2 is scheduled, subframe 5 of CC1 is scheduled by subframe 5 of CC1, subframe 6 of CC1 is scheduled by subframe 6 of CC1 or subframe 8 of CC2, and subframe 7 of CC1 is subframe of CC2 5 Scheduling, subframe 8 of CC1 is scheduled by subframe 4 of CC1 or subframe 6 of CC2, and subframe 9 of CC1 is scheduled by subframe 9 of CC1 or subframe 1 of CC2.

CC2: Subframe 0 of CC2 is scheduled by subframe 0 of CC2, subframe 1 of CC2 is scheduled by subframe 1 of CC2 or subframe 9 of CC1, and subframe 2 of CC2 is subframe 6 of CC1 or subframe of CC2 8 scheduling, subframe 3 of CC2 is scheduled by subframe 3 of CC2 or subframe 1 of CC1, subframe 4 of CC2 is scheduled by subframe 4 of CC2, subframe 5 of CC2 is scheduled by subframe 5 of CC2, CC2 Subframe 6 is scheduled by subframe 6 of CC2 or subframe 4 of CC1, subframe 7 of CC2 is scheduled by subframe 3 of CC2 and subframe 1 of CC1, and subframe 8 of CC2 is subframe 8 or CC1 of CC2 Subframe 6 is scheduled, and subframe 9 of CC2 is scheduled by subframe 9 of CC2.

In the sixteenth embodiment, it is assumed that the component carrier CC1 adopts the frame configuration 1, the component carrier CC2 adopts the frame configuration 1, and the CC2 is advanced by 5 subframes relative to the CC1 or the CC1 is delayed by 5 subframes relative to the CC2, that is, the frame start time is offset. The shift amount is 5 subframes. As shown in FIG. 27, the carrier aggregation diagram of frame configuration 1 and frame configuration 1 is as follows:

It can be seen that the total delay of the carrier aggregation downlink in the sixteenth embodiment is 1.15 ms, and the total delay of the carrier aggregation uplink is 1.25 ms.

In the sixteenth embodiment, in the case of supporting cross-carrier scheduling, the scheduling relationship is as follows:

CC1: Subframe 0 of CC1 is scheduled by subframe 0 of CC1, subframe 1 of CC1 is scheduled by subframe 1 of CC1, subframe 2 of CC1 is scheduled by subframe 2 of CC1, and subframe 3 of CC1 is sub-frame of CC1 Frame 3 scheduling, subframe 4 of CC1 is scheduled by subframe 0 of CC1, subframe 5 of CC1 is scheduled by subframe 1 of CC1, subframe 6 of CC1 is scheduled by subframe 2 of CC1, and subframe 7 of CC1 is scheduled by CC1 Subframe 3 or subframe 2 of CC2 is scheduled, subframe 8 of CC1 is scheduled by subframe 8 of CC1 or subframe 13 of CC2, subframe 9 of CC1 is scheduled by subframe 9 of CC1, and subframe 10 of CC1 is scheduled by Subframe 10 of CC1 is scheduled, subframe 11 of CC1 is scheduled by subframe 11 of CC1, subframe 12 of CC1 is scheduled by subframe 12 of CC1, and subframe 13 of CC1 is subframe 13 of CC1 or subframe 18 of CC2. Scheduling, subframe 14 of CC1 is scheduled by subframe 10 of CC1, Subframe 15 of CC1 is scheduled by subframe 11 of CC1, subframe 16 of CC1 is scheduled by subframe 12 of CC1, and subframe 17 of CC1 is scheduled by subframe 13 of CC1 or subframe 18 of CC2, subframe 18 of CC1 It is scheduled by subframe 18 of CC1 or subframe 3 of CC2, and subframe 19 of CC1 is scheduled by subframe 19 of CC1.

CC2: Subframe 0 of CC2 is scheduled by subframe 0 of CC2, subframe 1 of CC2 is scheduled by subframe 1 of CC2, subframe 2 of CC2 is scheduled by subframe 2 of CC2, and subframe 3 of CC2 is sub-frame of CC2 Frame 3 or subframe 18 of CC1 is scheduled, subframe 4 of CC2 is scheduled by subframe 0 of CC2, subframe 5 of CC2 is scheduled by subframe 1 of CC2, and subframe 6 of CC2 is scheduled by subframe 2 of CC2, CC2 Subframe 7 is scheduled by subframe 18 of CC1 or subframe 3 of CC2, subframe 8 of CC2 is scheduled by subframe 8 of CC2 or subframe 3 of CC1, and subframe 9 of CC2 is scheduled by subframe 9 of CC2, Subframe 10 of CC2 is scheduled by subframe 10 of CC2, subframe 11 of CC2 is scheduled by subframe 11 of CC2, subframe 12 of CC2 is scheduled by subframe 12 of CC2, and subframe 13 of CC2 is subframe 13 of CC2. Or subframe 8 of CC1 is scheduled, subframe 14 of CC2 is scheduled by subframe 10 of CC2, subframe 15 of CC2 is scheduled by subframe 11 of CC2, subframe 16 of CC2 is scheduled by subframe 12 of CC2, and child of CC2 Frame 17 is scheduled by subframe 13 of CC2 or subframe 8 of CC1, subframe 18 of CC2 is scheduled by subframe 13 of CC1 or subframe 18 of CC2, and subframe 19 of CC2 is scheduled by subframe 19 of CC2.

In the seventeenth embodiment, it is assumed that the component carrier CC1 adopts the frame configuration 2, the component carrier CC2 adopts the frame configuration 2, and the CC2 is advanced by 5 subframes relative to the CC1 or the CC1 is delayed by 5 subframes relative to the CC2, that is, the frame start time is offset. The shift amount is 5 subframes, as shown in FIG. 28 is a schematic diagram of carrier aggregation of frame configuration 2 and frame configuration 2:

It can be seen that the total delay of the carrier aggregation downlink in the seventeenth embodiment is 1.15 ms, and the total delay of the carrier aggregation uplink is 1.75 ms.

In the seventeenth embodiment, in the case of supporting cross-carrier scheduling, the scheduling relationship is as follows:

CC1: Subframe 0 of CC1 is scheduled by subframe 0 of CC1, subframe 1 of CC1 is scheduled by subframe 1 of CC1 or subframe 6 of CC2, and subframe 2 of CC1 is subframe 2 of CC1 or subframe of CC2 7 scheduling, subframe 3 of CC1 is scheduled by subframe 3 of CC1 or subframe 8 of CC2, subframe 4 of CC1 is scheduled by subframe 0 of CC1, and subframe 5 of CC1 is subframe 1 of CC1 or child of CC2 Frame 6 scheduling, subframe 6 of CC1 is scheduled by subframe 6 of CC1 or subframe 11 of CC2, subframe 7 of CC1 is subframe 7 of CC1 or subframe of CC2 12 scheduling, subframe 8 of CC1 is scheduled by subframe 8 of CC1 or subframe 13 of CC2, subframe 9 of CC1 is scheduled by subframe 9 of CC1, subframe 10 of CC1 is scheduled by subframe 10 of CC1, CC1 The subframe 11 is scheduled by the subframe 11 of CC1 or the subframe 16 of CC2, and the subframe 12 of CC1 is scheduled by subframe 12 of CC1 or subframe 17 of CC2, and subframe 13 of CC1 is subframe 13 of CC1 or CC2 Subframe 18 scheduling, subframe 14 of CC1 is scheduled by subframe 10 of CC1, subframe 15 of CC1 is scheduled by subframe 11 of CC1, and subframe 16 of CC1 is scheduled by subframe 16 of CC1 or subframe 1 of CC2, Subframe 17 of CC1 is scheduled by subframe 17 of CC1 or subframe 2 of CC2, subframe 18 of CC1 is scheduled by subframe 18 of CC1 or subframe 3 of CC2, and subframe 19 of CC1 is subframe 19 of CC1. Scheduling.

CC2: Subframe 0 of CC2 is scheduled by subframe 0 of CC2, subframe 1 of CC2 is scheduled by subframe 1 of CC2 or subframe 16 of CC1, and subframe 2 of CC2 is subframe 2 of CC2 or subframe of CC1 17 scheduling, subframe 3 of CC2 is scheduled by subframe 3 of CC2 or subframe 18 of CC1, subframe 4 of CC2 is scheduled by subframe 0 of CC2, and subframe 5 of CC2 is subframe 1 of CC2 or child of CC1 Frame 16 scheduling, subframe 6 of CC2 is scheduled by subframe 6 of CC2 or subframe 1 of CC1, subframe 7 of CC2 is scheduled by subframe 2 of CC1 or subframe 7 of CC2, and subframe 8 of CC2 is composed of CC2 Subframe 8 or subframe 3 scheduling of CC1, subframe 9 of CC2 is scheduled by subframe 9 of CC2, subframe 10 of CC2 is scheduled by subframe 10 of CC2, and subframe 11 of CC2 is subframe 11 or CC1 of CC2. Subframe 6 scheduling, subframe 12 of CC2 is scheduled by subframe 12 of CC2 or subframe 7 of CC1, subframe 13 of CC2 is scheduled by subframe 13 of CC2 or subframe 8 of CC1, and subframe 14 of CC2 is scheduled by Subframe 10 of CC2 is scheduled, subframe 15 of CC2 is scheduled by subframe 11 of CC2 or subframe 6 of CC1, and subframe 16 of CC2 is scheduled by subframe 11 of CC1 or subframe 16 of CC2, subframe 17 of CC2 It is scheduled by subframe 17 of CC2 or subframe 12 of CC1, subframe 18 of CC2 is scheduled by subframe 18 of CC2 or subframe 13 of CC1, and subframe 19 of CC2 is composed of CC2 Subframe 19 is scheduled.

In the eighteenth embodiment, it is assumed that the component carrier CC1 adopts the frame configuration 1, the component carrier CC2 adopts the frame configuration 2, and the CC2 is advanced by 4 subframes relative to the CC1 or the CC1 is delayed by 4 subframes relative to the CC2, that is, the frame start time is offset. The shift amount is 4 subframes, as shown in FIG. 29 is a carrier aggregation diagram of frame configuration 1 and frame configuration 2:

It can be seen that the total delay of the carrier aggregation downlink in the eighteenth embodiment is 1.15 ms, and the total delay of the carrier aggregation uplink is 1.45 ms.

In the eighteenth embodiment, in the case of supporting cross-carrier scheduling, the scheduling relationship is as follows:

CC1: Subframe 0 of CC1 is scheduled by subframe 0 of CC1, subframe 1 of CC1 is scheduled by subframe 1 of CC1, and subframe 2 of CC1 is scheduled by subframe 2 of CC1 or subframe 6 of CC2, the sub-frame of CC1 Frame 3 is scheduled by subframe 3 of CC1 or subframe 7 of CC2, subframe 4 of CC1 is scheduled by subframe 0 of CC1, subframe 5 of CC1 is scheduled by subframe 1 of CC1, and subframe 6 of CC1 is scheduled by CC1 Subframe 2 or subframe 6 of CC2 is scheduled, subframe 7 of CC1 is scheduled by subframe 3 of CC1 or subframe 7 of CC2, and subframe 8 of CC1 is scheduled by subframe 8 of CC1 or subframe 12 of CC2, CC1 Subframe 9 is scheduled by subframe 9 of CC1 or subframe 13 of CC2, subframe 10 of CC1 is scheduled by subframe 10 of CC1, subframe 11 of CC1 is scheduled by subframe 11 of CC1, and subframe 12 of CC1 is composed of subframe 12 Subframe 12 of CC1 or subframe 16 of CC2 is scheduled, subframe 13 of CC1 is scheduled by subframe 13 of CC1 or subframe 17 of CC2, subframe 14 of CC1 is scheduled by subframe 10 of CC1, subframe 15 of CC1 It is scheduled by subframe 11 of CC1, subframe 16 of CC1 is scheduled by subframe 12 of CC1 or subframe 16 of CC2, and subframe 17 of CC1 is scheduled by subframe 13 of CC1 or subframe 17 of CC2, subframe of CC1 18 is scheduled by subframe 18 of CC1 or subframe 2 of CC2, and subframe 19 of CC1 is scheduled by subframe 19 of CC1 or subframe 3 of CC2.

CC2: Subframe 0 of CC2 is scheduled by subframe 0 of CC2, subframe 1 of CC2 is scheduled by subframe 1 of CC2, and subframe 2 of CC2 is scheduled by subframe 2 of CC2 or subframe 18 of CC1, the sub-frame of CC2 Frame 3 is scheduled by subframe 3 of CC2 or subframe 19 of CC1, subframe 4 of CC2 is scheduled by subframe 0 of CC2, subframe 5 of CC2 is scheduled by subframe 1 of CC2, and subframe 6 of CC2 is composed of CC2 Subframe 6 or subframe 2 scheduling of CC1, subframe 7 of CC2 is scheduled by subframe 3 of CC1 or subframe 7 of CC2, subframe 8 of CC2 is scheduled by subframe 8 of CC2, and subframe 9 of CC2 is composed of CC2 Subframe 9 scheduling, subframe 10 of CC2 is scheduled by subframe 10 of CC2, subframe 11 of CC2 is scheduled by subframe 11 of CC2, and subframe 12 of CC2 is scheduled by subframe 12 of CC2 or subframe 8 of CC1 Subframe 13 of CC2 is scheduled by subframe 13 of CC2 or subframe 9 of CC1, subframe 14 of CC2 is scheduled by subframe 10 of CC2, subframe 15 of CC2 is scheduled by subframe 11 of CC2, subframe of CC2 16 is scheduled by subframe 12 of CC1 or subframe 16 of CC2. Subframe 17 of CC2 is scheduled by subframe 17 of CC2 or subframe 13 of CC1, and subframe 18 of CC2 is scheduled by subframe 18 of CC2, the sub-frame of CC2 Frame 19 is scheduled by subframe 19 of CC2.

In the nineteenth embodiment, it is assumed that the component carrier CC1 adopts frame configuration 2, and the component carrier CC2 adopts Frame 0 is configured with a frame, and CC2 is advanced by 7 subframes with respect to CC1, or CC1 is delayed by 7 subframes with respect to CC2. As shown in FIG. 30, a carrier aggregation diagram of frame configuration 2 and frame configuration 0 is shown, where 0- 9 is a sub-frame included in each field, and each sub-frame is 0.5 ms. As with the analysis process of the seventh embodiment, the total delay of the downlink of the carrier aggregation is 1.15 ms. The total delay of the uplink of carrier aggregation is 1.3 ms. In the case of supporting cross-carrier scheduling, the scheduling relationship is as follows:

CC1: Subframe 0 of CC1 is scheduled by subframe 0 of CC1, subframe 1 of CC1 is scheduled by subframe 1 of CC1, subframe 2 of CC1 is scheduled by subframe 2 of CC1, and subframe 3 of CC1 is sub-frame of CC1 Frame 3 or subframe 2 of CC2 is scheduled, subframe 4 of CC1 is scheduled by subframe 0 of CC1, subframe 5 of CC1 is scheduled by subframe 1 of CC1, and subframe 6 of CC1 is subframe 6 of CC1 or CC2 Subframe 13 scheduling, subframe 7 of CC1 is scheduled by subframe 7 of CC1, subframe 8 of CC1 is scheduled by subframe 8 of CC1, subframe 9 of CC1 is scheduled by subframe 9 of CC1, and subframe 10 of CC1 is scheduled by Subframe 10 of CC1 is scheduled, subframe 11 of CC1 is scheduled by subframe 11 of CC1, subframe 12 of CC1 is scheduled by subframe 12 of CC1, and subframe 13 of CC1 is subframe 13 of CC1 or subframe 0 of CC2. Scheduling, subframe 14 of CC1 is scheduled by subframe 10 of CC1, subframe 15 of CC1 is scheduled by subframe 11 of CC1, and subframe 16 of CC1 is scheduled by subframe 16 of CC1 or subframe 3 of CC2, the sub-frame of CC1 Frame 17 is scheduled by subframe 17 of CC1, subframe 18 of CC1 is scheduled by subframe 18 of CC1, and subframe 19 of CC1 is scheduled by subframe 19 of CC1.

CC2: Subframe 0 of CC2 is scheduled by subframe 0 of CC2 or subframe 13 of CC1, subframe 1 of CC2 is scheduled by subframe 1 of CC2, subframe 2 of CC2 is scheduled by subframe 2 of CC2, and child of CC2 Frame 3 is scheduled by subframe 3 of CC2 or subframe 16 of CC1, subframe 4 of CC2 is scheduled by subframe 0 of CC2 or subframe 13 of CC1, subframe 5 of CC2 is scheduled by subframe 1 of CC2, CC2 Subframe 6 is scheduled by subframe 2 of CC2, subframe 7 of CC2 is scheduled by subframe 16 of CC1, subframe 8 of CC2 is scheduled by subframe 17 of CC1, and subframe 9 of CC2 is scheduled by subframe 18 of CC1, Subframe 10 of CC2 is scheduled by subframe 10 of CC2 or subframe 3 of CC1, subframe 11 of CC2 is scheduled by subframe 11 of CC2, and subframe 12 of CC2 is scheduled by subframe 12 of CC2 or subframe 8 of CC1. Subframe 13 of CC2 is scheduled by subframe 13 of CC2 or subframe 6 of CC1, subframe 14 of CC2 is scheduled by subframe 10 of CC2 or subframe 3 of CC1, and subframe 15 of CC2 is subframe 11 of CC2 Scheduling, subframe 16 of CC2 is scheduled by subframe 12 of CC1, subframe 17 of CC2 is scheduled by subframe 13 of CC2 or subframe 6 of CC1, and subframe 18 of CC2 is modulated by subframe 7 of CC1. Degrees, subframe 19 of CC2 is scheduled by subframe 8 of CC1.

In the twentieth embodiment, it is assumed that the component carrier CC1 adopts the frame configuration 5, the component carrier CC2 adopts the frame configuration 0, and the CC2 advances 7 subframes relative to the CC1, or the CC1 is delayed by 7 subframes relative to the CC2, as shown in the figure. 31 is a schematic diagram of carrier aggregation of frame configuration 5 and frame configuration 0, where 0-9 is a subframe included in each field, and each subframe is 0.5 ms. As with the analysis process of the seventh embodiment, the total delay of the downlink of the carrier aggregation is 1.15 ms. The total delay of the uplink of carrier aggregation is 1.3 ms. In the case of supporting cross-carrier scheduling, the scheduling relationship is as follows:

CC1: Subframe 0 of CC1 is scheduled by subframe 0 of CC1, subframe 1 of CC1 is scheduled by subframe 1 of CC1, subframe 2 of CC1 is scheduled by subframe 2 of CC1, and subframe 3 of CC1 is sub-frame of CC1 Frame 3 or subframe 2 of CC2 is scheduled, subframe 4 of CC1 is scheduled by subframe 0 of CC1, subframe 5 of CC1 is scheduled by subframe 1 of CC1, and subframe 6 of CC1 is subframe 6 of CC1 or CC2 Subframe 13 scheduling, subframe 7 of CC1 is scheduled by subframe 7 of CC1, subframe 8 of CC1 is scheduled by subframe 8 of CC1, subframe 9 of CC1 is scheduled by subframe 9 of CC1, and subframe 10 of CC1 is scheduled by Subframe 10 of CC1 is scheduled, subframe 11 of CC1 is scheduled by subframe 11 of CC1, subframe 12 of CC1 is scheduled by subframe 12 of CC1, and subframe 13 of CC1 is subframe 13 of CC1 or subframe 0 of CC2. Scheduling, subframe 14 of CC1 is scheduled by subframe 14 of CC1 or subframe 1 of CC2, subframe 15 of CC1 is scheduled by subframe 15 of CC1 or subframe 2 of CC2, and subframe 16 of CC1 is sub-frame of CC1 Frame 16 or subframe 3 scheduling of CC2, subframe 17 of CC1 is scheduled by subframe 17 of CC1, subframe 18 of CC1 is scheduled by subframe 18 of CC1, and subframe 19 of CC1 is scheduled by subframe 19 of CC1.

CC2: Subframe 0 of CC2 is scheduled by subframe 0 of CC2 or subframe 13 of CC1, subframe 1 of CC2 is scheduled by subframe 1 of CC2 or subframe 14 of CC1, and subframe 2 of CC2 is subframe of CC2 2 or subframe 1 of CC1 is scheduled, subframe 3 of CC2 is scheduled by subframe 3 of CC2 or subframe 16 of CC1, and subframe 4 of CC2 is scheduled by subframe 0 of CC2 or subframe 13 of CC1, the child of CC2 Frame 5 is scheduled by subframe 1 of CC2 or subframe 14 of CC1, subframe 6 of CC2 is scheduled by subframe 2 of CC2 or subframe 15 of CC1, and subframe 7 of CC2 is composed of subframe 16 of CC1 or child of CC2 Frame 3 scheduling, subframe 8 of CC2 is scheduled by subframe 17 of CC1, subframe 9 of CC2 is scheduled by subframe 18 of CC1, and subframe 10 of CC2 is scheduled by subframe 10 of CC2 or subframe 3 of CC1, CC2 Subframe 11 is scheduled by subframe 11 of CC2, CC2 Subframe 12 is scheduled by subframe 12 of CC2, subframe 13 of CC2 is scheduled by subframe 13 of CC2 or subframe 6 of CC1, and subframe 14 of CC2 is scheduled by subframe 10 of CC2 or subframe 3 of CC1, CC2 Subframe 15 is scheduled by subframe 11 of CC2, subframe 16 of CC2 is scheduled by subframe 12 of CC2, subframe 17 of CC2 is scheduled by subframe 13 of CC2 or subframe 6 of CC1, and subframe 18 of CC2 is composed of Subframe 7 of CC1 is scheduled, and subframe 19 of CC2 is scheduled by subframe 8 of CC1.

Based on the same inventive concept, a base station is further provided in the embodiment of the present invention. For the specific implementation of the base station, reference may be made to the related description in the foregoing method embodiment. The repeated description is not repeated. As shown in FIG. 20, the base station may include :

a first determining module 2001, configured to determine a frame configuration of each component carrier of at least two component carriers used for carrier aggregation;

a second determining module 2002, configured to determine an offset of a frame start time of each of the at least two component carriers except the reference component carrier with respect to a frame start time of the reference component carrier, where the reference member The carrier is at least one of the at least two component carriers;

The communication module 2003 is configured to communicate with the terminal by using the at least two component carriers.

In implementation, the communication module 2003 is specifically configured to:

Determining, according to an offset of a frame start time of the first component carrier relative to the reference component carrier and/or an offset of the second component carrier from the reference component carrier, determining the first component carrier with respect to the The frame start time of the second component carrier is advanced by a first offset; the following scheduling relationship exists between the subframe of the first component carrier and the subframe of the second carrier carrier:

The communication module schedules the second downlink subframe of the first component carrier by using the first downlink subframe of the first component carrier, and the subframe number of the second downlink subframe and the first downlink subframe The subframe number of the frame is the same;

The communication module schedules the first uplink subframe of the first component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the first component carrier, and a sub-frame of the first uplink subframe a frame number greater than or equal to a sub-frame number of the second downlink subframe plus a preset value obtained by modulating a frame length, where the frame length is a number of subframes included in one radio frame That is, the first uplink subframe is located in the first preset subframe or is located after the first preset subframe, where the value of the subframe number of the first preset subframe is according to the second Determining the sum of the subframe number of the downlink subframe and the preset value;

The communication module schedules the first uplink subframe of the first component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the second component carrier, and the child of the first uplink subframe a frame number greater than or equal to a subframe number of the second downlink subframe plus the first offset plus a preset value obtained by modulating a frame length, the frame length being one The number of the subframes included in the wireless frame, that is, the first uplink subframe is located in the second preset subframe or after the second preset subframe, and the subframe number of the second preset subframe And determining, according to the sum of the subframe number of the second downlink subframe and the first offset plus a preset value;

The communication module schedules the first downlink subframe of the second component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the second component carrier, and the second downlink subframe is The subframe number is the same as the subframe number of the first downlink subframe;

The communication module schedules the first downlink subframe of the second component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the first component carrier, and the second downlink subframe is The sub-frame number is equal to the result that the sum of the subframe number of the first downlink sub-frame and the first offset is modulo the frame length, where the frame length is a sub-frame included in the radio frame. The number of frames, that is, the subframe in which the first downlink subframe is located in the subframe number of the second downlink subframe minus the first offset;

f. The communication module schedules a first uplink subframe of the second component carrier by using a scheduling subframe, where The scheduling subframe is the second downlink subframe of the second component carrier, and the subframe number of the first uplink subframe is greater than or equal to the subframe number of the second downlink subframe plus a preset value. The result is obtained by modulo the frame length, where the frame length is the number of subframes included in one radio frame, that is, the first uplink subframe is located in the third preset subframe or in the third preset subframe. The subframe number of the third preset subframe is determined according to the sum of the subframe number of the second downlink subframe plus a preset value;

The communication module schedules the first uplink subframe of the second component carrier by using a scheduling subframe, where the scheduling subframe is a subframe of the first uplink subframe of the second downlink subframe of the first component carrier a number greater than or equal to a difference between a subframe number of the second downlink subframe minus a first offset and a value obtained by adding a preset value to a frame length, where the frame length is The number of subframes included in a radio frame, that is, the first uplink subframe is located in the fourth preset subframe or after the fourth preset subframe, and the subframe number of the fourth preset subframe is And determining, according to a difference between a subframe number of the second downlink subframe and a difference obtained by subtracting the first offset from a preset value.

The communication module performs the second downlink subframe of the first component carrier by using the first downlink subframe of the second component carrier, where the second downlink subframe is the first downlink subframe The subframe number plus the subframe indicated by the sum value obtained by the first offset.

In the above scheduling relationship, if the communication module schedules the first uplink subframe of the first component carrier by using a scheduling subframe, or the communication module schedules the first uplink subframe of the second component carrier by using a scheduling subframe, The scheduling subframe is a downlink subframe that is closest to the first uplink subframe in the first component carrier and the second component carrier.

If the first component carrier and the second component carrier belong to the component carrier for carrier aggregation, but none of the reference component carriers, the communication module is offset according to the frame start time of the first component carrier with respect to the reference component carrier. Transmitting, and an offset of the second component carrier relative to the reference component carrier, determining a first offset of the frame start time of the first component carrier relative to the second component carrier.

If the second component carrier is the reference component carrier, the communication module determines, according to the offset of the frame start time of the first component carrier with respect to the reference component carrier, a frame start time advance of the first component carrier with respect to the second component carrier. a first offset, the first offset being the first component carrier phase The offset of the frame start time advance for the reference component carrier.

If the first component carrier is the reference component carrier, the communication module determines the frame start time advance of the first component carrier relative to the second component carrier according to the offset of the frame start time of the second component carrier with respect to the reference component carrier. a first offset, the first offset being an offset of a frame start time delay of the second component carrier relative to the reference component carrier.

In an implementation, there may be different schemes when determining the offset. For example, the offset may be determined according to the following principle: at least two component carriers have both subframes for downlink data transmission and at the same time in one frame. The subframes for uplink data transmission have the most occurrences. Specifically, the second determining module determines, in the manner of, the offset of the frame start time of each of the at least two component carriers, except the reference component carrier, with respect to the frame start time of the reference component carrier, including Not limited to the embodiments listed below:

First, determining, according to a frame configuration of each of the component carriers, a deviation of a frame start time of each of the at least two component carriers except the reference component carrier with respect to a frame start time of the reference component carrier Transfer amount.

Second, the offset of the frame start time is a preset value, and the preset value is obtained by protocol agreement or signaling configuration.

Third, the difference between the offset of the frame start time and the reference value is within a preset range.

In the second or third implementation manner, the preset value or the reference value is a subframe in which the first one of the at least two component carriers is used for downlink data transmission, and the first one is used for uplink. The number of subframes between subframes of data transmission;

or,

Optionally, if the transmission time interval TTI is 1 millisecond and the component carrier used for carrier aggregation is two, the frame configuration combination of the two component carriers is: a combination of frame configuration 0 and frame configuration 1, or a frame Combination of configuration 6 and frame configuration 6, or combination of frame configuration 3 and frame configuration 0, or combination of frame configuration 4 and frame configuration 0, or combination of frame configuration 5 and frame configuration 0, or frame configuration 2 Combination with frame configuration 0;

Wherein, the combination of configuration 0 and frame configuration 1, the combination of frame configuration 6 and frame configuration 6, the combination of frame configuration 3 and frame configuration 0, the combination of frame configuration 4 and frame configuration 0, and the combination of frame configuration 5 and frame configuration 0 The offset of the corresponding frame start time is 2 subframes; the offset of the frame start time corresponding to the combination of frame configuration 2 and frame configuration 0 is 3 subframes. It should be noted that the frame configuration combination and the corresponding frame start time offset are the configurations that reduce the delay effect, and do not exclude the combination of other frame configuration combinations and the frame start time offset. Such as the ability to reduce the delay configuration.

Optionally, if the transmission time interval TTI is 0.5 milliseconds and the component carrier used for carrier aggregation is two, the frame configuration combination of the two component carriers is: a combination of frame configuration 0 and frame configuration 1, or a frame Combination of configuration 3 and frame configuration 0, or combination of frame configuration 2 and frame configuration 0, or combination of frame configuration 4 and frame configuration 0, or combination of frame configuration 5 and frame configuration 0, or frame configuration 6 Combination with frame configuration 6;

The combination of the frame configuration 0 and the frame configuration 1 and the frame start time corresponding to the combination of the frame configuration 3 and the frame configuration 0 are 4 subframes; the combination of the frame configuration 2 and the frame configuration 0, and the frame configuration 4 and The combination of frame configuration 0, the combination of frame configuration 5 and frame configuration 0, and the frame start time corresponding to the combination of frame configuration 6 and frame configuration 6 are 6 subframes. It should be noted that the frame configuration combination and the corresponding frame start time offset are the configurations that reduce the delay effect, and do not exclude the combination of other frame configuration combinations and the frame start time offset. Such as the ability to reduce the delay configuration.

In an implementation, the frames of the at least two component carriers are configured as a combination of arbitrary frame configurations. The arbitrary frame configuration combination is any combination of the frame configurations 0 to 6 in the 1 ms TTI frame, or the arbitrary frame configuration combination is any combination of the frame configurations 0 to 6 in the 0.5 ms TTI frame, or the arbitrary frame configuration combination includes the newly defined various combinations. Frame configuration.

In the implementation, in order to reduce the complexity of determining the frame configuration, the at least two component carriers used for carrier aggregation are composed of two or more carrier groups, and each carrier group includes one or more component carriers, and the first determining module is specifically configured to:

The frame configuration of the component carriers in each carrier group is determined separately. The frame configuration is performed by dividing the carrier group. If the number of carriers included in the carrier group that has not been frame-configured is the same as the number of carriers included in the carrier group that has been frame-configured, the carrier group that has been frame-configured can be directly used. The frame configuration of the medium component carrier improves configuration efficiency and reduces complexity.

Similarly, in the implementation, in order to reduce the complexity of determining the offset of the frame start time of the component carrier relative to the reference component carrier, the second determining module is specifically configured to: separately determine each carrier group except the reference component carrier. The offset of each component carrier relative to the frame start time of the reference component carrier, and only one of the carrier groups includes the reference component carrier. The second determining module determines, for the carrier group not including the reference component carrier, an offset of a frame start time of each component carrier in the carrier group with respect to the reference component carrier; and determining the carrier group for the carrier group including the reference component carrier The offset of the frame start time of each component carrier other than the reference component carrier relative to the reference component carrier. For the first carrier group for which the offset is not determined, if the first carrier group includes the same number of component carriers as the second carrier group for which the offset has been determined, and the first carrier group and the first carrier group If the same component carriers in the two carrier groups have the same frame configuration, the offset of the component carriers in the first carrier group can directly use the offset of the same component carrier in the second carrier group, thereby reducing complexity and improving efficiency.

In a specific implementation, the correspondence between the frame configuration combination of the at least two component carriers and the offset of the frame start time or the offset sequence is preset, and the offset or offset of the same frame start time will be The frame configuration combination of the sequence is divided into the same set, or the frame component combination of the same component carrier having the same frame configuration is divided into the same set, and the first determining module selects the frame configuration. The combination and the second determining module select an offset or offset sequence of the frame start time, as follows:

Selecting a frame configuration combination from a preset set of frame configuration combinations, the frame of the specified position in the frame configuration combination is configured as a frame configuration of the reference component carrier, and each frame configuration included in the frame configuration combination is used to determine each frame. Determining, by the frame configuration of the component carrier, an offset or an offset sequence of the frame start time corresponding to the selected frame configuration combination, and determining the at least two according to the acquired offset or offset sequence of the frame start time An offset of the frame start time of each of the member carriers other than the reference component carrier with respect to the reference component carrier, wherein the offset or offset sequence corresponding to the same frame start time The frame configuration combinations belong to the same set, or include at least one identical component carrier, and the frame configuration combinations of the same component carrier having the same frame configuration belong to the same set;

or,

Obtaining an offset or offset sequence of a preset frame start time, and determining, according to the acquired offset or offset sequence of the frame start time, each of the at least two component carriers except the reference component carrier Obtaining an offset of the frame start time or a set of frame configuration combinations corresponding to the offset sequence of the component carrier relative to a frame start time of the reference component carrier, and combining the frames from the frame configuration Selecting a frame configuration combination, the frame configuration of the specified location in the frame configuration combination is a frame configuration of the reference component carrier, and determining each of the component carriers by using each frame configuration included in the selected frame configuration combination Frame configuration in which the frame configuration combinations corresponding to the same frame start time offset or offset sequence belong to the same set, or contain at least one identical The carrier carrier, and the frame configuration combinations of the same component carrier having the same frame configuration belong to the same set.

If the frame configuration combination corresponds to an offset sequence, the offset sequence is identical to the frame configuration of the frame configuration combination except that the frame configuration of the reference component carrier is specified, that is, the component carrier adopts the In the case of a frame configuration in a frame configuration combination, the offset of the component carrier relative to the reference component carrier is an offset in the offset sequence corresponding to the arrangement order of the frame configuration. Determining, in sequence, each offset in the acquired offset sequence as a frame start time of each of the at least two component carriers except the reference component carrier with respect to the reference component carrier The offset, and in turn determining each frame configuration in the frame configuration combination as the frame configuration of each of the component carriers of the at least two component carriers.

In a specific implementation, the communication module determines a new scheduling sequence according to a frame configuration of each of the component carriers, and communicates with the terminal according to the new scheduling sequence. For convenience of implementation, the communication module communicates with the terminal according to the frame configuration of each component carrier according to the reference scheduling timing, and the reference scheduling timing is a scheduling sequence configured for any frame. The arbitrary frame configuration may be any one of frame configurations 0 to 6 in 1 ms TTI, or any one of frame configuration 0 to 6 in 0.5 ms TTI, or a frame configuration newly defined by a technician.

Based on the same inventive concept, a base station is further provided in the embodiment of the present invention. For the specific implementation of the base station, reference may be made to the related description in the foregoing method embodiment. The repeated description is not repeated. As shown in FIG. 21, the base station mainly includes The processor 2101, the memory 2102, and the transceiver 2103, wherein the memory 2102 stores a preset program, and the processor reads the program stored in the memory, and executes the following process according to the program:

Determining a frame configuration of each of the at least two component carriers used for carrier aggregation;

Determining an offset of a frame start time of each of the at least two component carriers except the reference component carrier with respect to a frame start time of the reference component carrier, where the reference component carrier is the at least two members At least one of the carriers;

The transceiver is instructed to communicate with the terminal over at least two component carriers.

In the implementation, the value range is different according to the definition of the offset. For details, refer to the method part above and the description of the base station, and details are not described herein.

For the method of scheduling the two component carriers as an example, refer to the foregoing method part and the description of the base station, and details are not described herein again.

In an implementation, there may be different schemes when determining the offset. For example, the offset may be determined according to the following principle: at least two component carriers have both subframes for downlink data transmission and at the same time in one frame. The subframes for uplink data transmission have the most occurrences. Specifically, the processor determines, in the manner of the offset of the frame start time of each of the at least two component carriers, other than the reference component carrier, with respect to the frame start time of the reference component carrier, including but not limited to The implementations listed below:

In the second or third implementation manner, the preset value or the reference value is the at least two The number of subframes between the first one of the component carriers used for downlink data transmission and the first subframe used for uplink data transmission; or

The combination of the frame configuration 0 and the frame configuration 1 and the frame start time corresponding to the combination of the frame configuration 3 and the frame configuration 0 are 4 subframes; the combination of the frame configuration 2 and the frame configuration 0, and the frame configuration 4 In combination with frame configuration 0, the combination of frame configuration 5 and frame configuration 0 and the frame start time corresponding to the combination of frame configuration 6 and frame configuration 6 are 6 subframes. It should be noted that the frame configuration combination and the corresponding frame start time offset are the configurations that reduce the delay effect, and do not exclude the combination of other frame configuration combinations and the frame start time offset. Such as the ability to reduce the delay configuration.

In the implementation, in order to reduce the complexity of determining the frame configuration and reduce the complexity of determining the offset, at least two component carriers used for carrier aggregation are divided into multiple carrier groups, each carrier group includes more than one component carrier, and is processed. Determining, respectively, a frame configuration of a component carrier in each carrier group, and determining, respectively, an offset of a frame start time of each component carrier other than the reference component carrier in each carrier group with respect to a reference component carrier. The description of the above method parts is not repeated here.

In a specific implementation, the correspondence between the frame configuration combination of the at least two component carriers and the offset of the frame start time or the offset sequence is preset, and the offset or offset of the same frame start time will be The frame configuration combination of the sequence is divided into the same set, or the frame component combination of the same component carrier having the same frame configuration is divided into the same set, and the processor selects the frame from the set. For the combination of the configuration and the offset or offset sequence of the frame start time, refer to the description in the method section above, which is not described here.

In a specific implementation, the processor determines a new scheduling sequence according to a frame configuration of each of the component carriers, and communicates with the terminal through the transceiver according to the new scheduling timing. For convenience of implementation, the processor instructs the transceiver to communicate with the terminal according to the reference scheduling timing according to the frame configuration of each component carrier, and the reference scheduling timing is a scheduling sequence configured for any frame. The arbitrary frame configuration may be any one of frame configurations 0 to 6 in 1 ms TTI, or any one of frame configuration 0 to 6 in 0.5 ms TTI, or a frame configuration newly defined by a technician.

Optionally, a frame configuration of each component carrier of at least two component carriers used for carrier aggregation The product obtained by multiplying the number of subframes used for downlink data transmission by the ratio of the number of subframes used for uplink data transmission, and the difference from 1 belongs to a preset range, and the preset range is a preset setting, for example, The range of positive and negative 0.5 is set according to the empirical value, and is merely an example here, and is not limited by the range determined by plus or minus 0.5. Optionally, the frame configuration of each component carrier of the at least two component carriers used for carrier aggregation is multiplied by the ratio of the number of subframes for downlink data transmission and the number of subframes used for uplink data transmission. The product is 1.

Therein, the transceiver can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium. The processor is responsible for the usual processing, and the memory can store the data that the processor uses when performing operations.

Based on the same inventive concept, a terminal is also provided in the embodiment of the present invention. For the specific implementation of the terminal, refer to the description of the terminal in the foregoing method embodiment, and the repeated description is not repeated. As shown in FIG. 22, the terminal mainly include:

The receiving module 2201 is configured to receive a frame configuration of at least two component carriers for carrier aggregation sent by the base station;

The obtaining module 2202 is configured to acquire an offset of a frame start time of each of the at least two component carriers except the reference component carrier with respect to a frame start time of the reference component carrier, where the reference component carrier is At least one of the at least two component carriers;

The communication module 2203 is configured to communicate with the base station by using the at least two component carriers.

In an implementation, the obtaining module 2202 is specifically configured to:

Receiving, by the base station, an offset of a frame start time of each of the at least two component carriers except the reference component carrier with respect to a frame start time of the reference component carrier; or

And determining, by detecting a synchronization signal of each of the component carriers, an offset of a frame start time of each of the at least two component carriers except the reference component carrier with respect to a frame start time of the reference component carrier.

For the configuration of the frame configuration of the component carrier and the offset of the frame start time of each of the component carriers other than the reference component carrier, refer to the description of the base station side. Narration.

Another terminal is provided in the embodiment of the present invention. For the specific implementation of the terminal, refer to the description of the terminal in the foregoing method embodiment, and the details are not described again. As shown in FIG. 23, the terminal is shown in FIG. It mainly includes a processor 2301, a memory 2302, and a transceiver 2303. The memory stores a preset program, and the processor reads the program saved in the memory, and executes the following process according to the program:

Receiving, by the transceiver, a frame configuration of at least two component carriers for carrier aggregation sent by the base station, and acquiring each of the at least two component carriers except the reference component carrier with respect to the reference member An offset of a frame start time of the carrier, the reference component carrier being at least one of the at least two component carriers;

Instructing the transceiver to communicate with the base station over the at least two component carriers.

In an implementation, the processor receives, by using a transceiver, the at least two component carriers sent by the base station An offset of a frame start time of each of the component carriers other than the reference component carrier with respect to the reference component carrier; or

The processor determines, by detecting a synchronization signal of each of the component carriers, an offset of a frame start time of each of the at least two component carriers except the reference component carrier with respect to a frame start time of the reference component carrier the amount.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The device is implemented in a flow chart or Multiple processes and/or block diagrams The functions specified in one or more boxes.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

A method for carrier aggregation, comprising:

The base station determines a frame configuration of each of the at least two component carriers used for carrier aggregation;

Determining, by the base station, an offset of a frame start time of each of the at least two component carriers except the reference component carrier, where the reference component carrier is the at least At least one of two component carriers;

The base station communicates with the terminal through the at least two component carriers.
The method according to claim 1, wherein the base station communicates with the terminal by using the at least two component carriers, including:

Determining, by the base station, the first component carrier according to an offset of a frame start time of the first component carrier with respect to the reference component carrier and/or an offset of the second component carrier with respect to the reference component carrier Advancing a first offset by a frame start time of the second component carrier;

The base station schedules a second downlink subframe of the first component carrier by using a first downlink subframe of the first component carrier, where the second downlink subframe is the same as the first downlink subframe; or,

The base station schedules a second downlink subframe of the first component carrier by using a first downlink subframe of the second component carrier, where the second downlink subframe is a sub-subframe of the first downlink subframe The subframe number indicated by the sum value obtained by adding the first offset to the frame number; or

The base station schedules a first uplink subframe of the first component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the first component carrier, and the first uplink subframe is located at a first After the preset subframe is located after the first preset subframe, the subframe number of the first preset subframe is determined according to a sum of a subframe number of the second downlink subframe and a preset value; or ,

The base station schedules a first uplink subframe of the first component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the second component carrier, and the first uplink subframe is located in a second The preset subframe is located after the second preset subframe, and the subframe number of the second preset subframe is the subframe number of the second downlink subframe plus the first offset plus The sum of the values obtained by the preset value is determined; or,

The base station schedules a first downlink subframe of the second component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the second component carrier, and the second downlink subframe and the second downlink subframe Said that the first downlink subframe is the same; or,

The base station schedules a first downlink subframe of the second component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the first component carrier, where the first downlink subframe is located a subframe in which the subframe number of the second downlink subframe is subtracted from the first offset; or

The base station schedules a first uplink subframe of the second component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the second component carrier, and the first uplink subframe is located in a third The preset subframe is located after the third preset subframe, and the subframe number of the third preset subframe is determined according to the sum of the subframe number of the second downlink subframe plus a preset value. ;or,

The base station schedules a first uplink subframe of the second component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the first component carrier, and the first uplink subframe is located at a fourth The preset subframe is located after the fourth preset subframe, and the subframe number of the fourth preset subframe is a difference obtained by subtracting the first offset from the subframe number of the second downlink subframe. The sum of the values obtained on the preset value is determined.
The method according to claim 2, wherein if the base station schedules a first uplink subframe of the first component carrier by using a scheduling subframe, or the base station schedules the second member by using a scheduling subframe a first uplink subframe of the carrier, where the scheduling subframe is a downlink subframe that is closest to the first uplink subframe of the first component carrier and the second component carrier.
The method according to claim 1, wherein the base station determines a frame start time of each of the at least two component carriers other than a reference component carrier with respect to the reference component carrier. Offset, including:

Determining, by the base station, an offset of a frame start time of each of the at least two component carriers except the reference component carrier with respect to a frame start time of the reference component carrier according to a frame configuration of each of the component carriers the amount.
The method according to any one of claims 1 to 4, wherein the different component carriers are offset by the same amount of frame start time as the reference component carrier.
The method according to any one of claims 1 to 4, wherein the base station determines a frame configuration of each of the component carriers, and determines each of the at least two component carriers except a reference component carrier The offset of the component carrier relative to the frame start time of the reference component carrier includes:

The base station selects a frame configuration combination from a set of preset frame configuration combinations, where a frame of a specified position in the frame configuration combination is configured as a frame configuration of a reference component carrier, and each frame included in the frame configuration combination is adopted. Determining a frame configuration of each of the component carriers, obtaining an offset or offset sequence corresponding to the selected frame configuration combination, and determining the at least two component carriers according to the acquired offset or offset sequence An offset of a frame start time of each of the component carriers other than the reference component carrier with respect to the reference component carrier, wherein frame composition combinations corresponding to the same offset or offset sequence belong to the same a set, or a frame configuration combination including at least one identical component carrier, and the same component carrier having the same frame configuration belongs to the same set;

or,

Determining, by the base station, a preset offset or offset sequence, and determining, according to the obtained offset or offset sequence, each of the at least two component carriers except the reference component carrier. And acquiring, by the offset of the frame start time of the reference component carrier, a set of frame configuration combinations corresponding to the offset or the offset sequence, and selecting a frame configuration combination from the set of the frame configuration combinations. The frame configuration of the specified location in the frame configuration combination is a frame configuration of the reference component carrier, and each frame configuration included in the selected frame configuration combination is used to determine a frame configuration of each of the component carriers, where corresponding to the same partial The frame configuration combinations of the shift or offset sequence belong to the same set, or contain at least one identical component carrier, and the frame configuration combinations of the same component carrier having the same frame configuration belong to the same set.
The method according to claim 6, wherein determining, according to the acquired offset, a frame of each of the at least two component carriers except the reference component carrier with respect to the reference component carrier The offset of the start time, including:

Determining that the offset of each of the at least two component carriers except the reference component carrier is the same as the frame start time of the reference component carrier, which is the acquired offset;

And determining, according to the obtained offset sequence, an offset of a frame start time of each of the at least two component carriers except the reference component carrier with respect to a frame start time of the reference component carrier, including:

And the offset sequence is identical to the frame configuration of the frame configuration combination except that the frame configuration of the reference component carrier is specified, and each offset in the acquired offset sequence is determined as An offset of a frame start time of each of the at least two component carriers other than the reference component carrier with respect to the reference component carrier.
The method according to any one of claims 1 to 4, wherein the at least two component carriers are composed of two or more carrier groups, and each of the carrier groups includes one or more component carriers;

Determining, by the base station, a frame configuration of each of the at least two component carriers used for carrier aggregation, including:

Determining, by the base station, frame configurations of component carriers in each of the carrier groups, respectively;

Determining an offset of a frame start time of each of the at least two component carriers except the reference component carrier with respect to a frame start time of the reference component carrier, including:

The base station respectively determines an offset of a frame start time of each component carrier except the reference component carrier in each of the carrier groups with respect to a frame start time of the reference component carrier.
The method according to any one of claims 1-4, wherein the number of subframes configured for downlink data transmission of each frame carrier of the at least two component carriers is used for uplink data transmission. The product obtained by multiplying the ratio of the number of sub-frames, the difference from 1 belongs to the preset range.
The method according to any one of claims 1-4, wherein the base station communicates with the terminal by using the at least two component carriers, including:

The base station communicates with the terminal according to a frame configuration of each of the component carriers according to a reference scheduling sequence, where the reference scheduling timing is a scheduling sequence configured by any frame.
The method according to any one of claims 1 to 4, wherein the offset is a preset value;

Alternatively, the difference between the offset and the reference value is within a preset range.

Or the offset satisfies an uplink subframe between the at least two component carriers. It is continuous, and the interval is greater than or equal to the carrier switching time.
The method according to claim 11, wherein the preset value or the reference value is the first one of the at least two of the component carriers used for downlink data transmission and the first one The number of subframes between subframes of uplink data transmission;

or,

The preset value or the reference value is determined according to the number of times that the subframe for uplink data transmission and the subframe for downlink data transmission exist simultaneously in the at least two component carriers in one frame.
A method for carrier aggregation, comprising:

Receiving, by the terminal, a frame configuration of at least two component carriers for carrier aggregation sent by the base station;

Obtaining, by the terminal, an offset of a frame start time of each of the at least two component carriers except the reference component carrier, where the reference component carrier is the at least At least one of two component carriers;

The terminal communicates with the base station through the at least two component carriers.
The method according to claim 13, wherein the terminal acquires a frame start time of each of the at least two component carriers except the reference component carrier with respect to the reference component carrier. Offset, including:

Receiving, by the terminal, an offset of a frame start time of each of the at least two component carriers, except the reference component carrier, with respect to a frame start time of the reference component carrier; or

Determining, by the terminal, a synchronization signal of each of the component carriers, a deviation of a frame start time of each of the at least two component carriers except the reference component carrier with respect to a frame start time of the reference component carrier Transfer amount.
A base station, comprising:

a first determining module, configured to determine a frame configuration of each component carrier of at least two component carriers used for carrier aggregation;

a second determining module, configured to determine an offset of a frame start time of each of the at least two component carriers except the reference component carrier with respect to a frame start time of the reference component carrier, The reference component carrier is at least one of the at least two component carriers;

And a communication module, configured to communicate with the terminal by using the at least two component carriers.
The base station according to claim 15, wherein the communication module is specifically configured to:

Determining, according to an offset of a frame start time of the first component carrier relative to the reference component carrier and/or an offset of the second component carrier from the reference component carrier, determining the first component carrier with respect to the The frame start time of the second component carrier is advanced by a first offset;

Scheduling a second downlink subframe of the first component carrier by using a first downlink subframe of the first component carrier, where the second downlink subframe is the same as the first downlink subframe; or

The base station schedules a second downlink subframe of the first component carrier by using a first downlink subframe of the second component carrier, where the second downlink subframe is a sub-subframe of the first downlink subframe The subframe number indicated by the sum value obtained by adding the first offset to the frame number; or

Scheduling a first uplink subframe of the first component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the first component carrier, where the first uplink subframe is located at a first preset After the subframe is located or after the first preset subframe, the subframe number of the first preset subframe is determined by a sum of a subframe number of the second downlink subframe and a preset value; or

Scheduling a first uplink subframe of the first component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the second component carrier, where the first uplink subframe is located in a second preset subframe The frame number is located after the second preset subframe, and the subframe number of the second preset subframe is based on the subframe number of the second downlink subframe plus the first offset plus a preset The sum of the values obtained is determined; or,

Scheduling a first downlink subframe of the second component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the second component carrier, and the second downlink subframe and the first The downlink subframes are the same; or,

Scheduling a first downlink subframe of the second component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the first component carrier, where the first downlink subframe is located in the first downlink subframe a subframe in which the subframe number of the second downlink subframe is subtracted from the first offset; or

Scheduling a first uplink subframe of the second component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the second component carrier, where the first uplink subframe is located in a third preset subframe Frame or After the third preset subframe, the subframe number of the third preset subframe is determined according to the sum of the subframe number of the second downlink subframe plus a preset value; or

Scheduling a first uplink subframe of the second component carrier by using a scheduling subframe, where the scheduling subframe is a second downlink subframe of the first component carrier, where the first uplink subframe is located in a fourth preset subframe The frame is located after the fourth preset subframe, and the subframe number of the fourth preset subframe is a difference obtained by subtracting the first offset from the subframe number of the second downlink subframe plus a preset. The sum of the values obtained is determined.
The base station according to claim 16, wherein the communication module schedules the first uplink subframe of the first component carrier by using a scheduling subframe, or the communication module schedules the first subframe by scheduling a subframe a first uplink subframe of the two component carriers, where the scheduling subframe is a downlink subframe that is closest to the first uplink subframe of the first component carrier and the second component carrier.
The base station according to claim 15, wherein the second determining module is specifically configured to:

And determining, according to a frame configuration of each of the component carriers, an offset of a frame start time of each of the at least two component carriers except the reference component carrier with respect to a frame start time of the reference component carrier.
The base station according to any one of claims 15 to 18, characterized in that the offset of the different component carriers with respect to the frame start time of the reference component carrier is the same.
The base station according to any one of claims 15 to 18, wherein the first determining module and the second determining module are specifically configured to:

Selecting a frame configuration combination from a set of preset frame configuration combinations, wherein a frame of a specified position in the frame configuration combination is configured as a frame configuration of a reference component carrier, and each frame configuration included in the frame configuration combination is determined a frame configuration of the component carrier, acquiring an offset or offset sequence corresponding to the selected frame configuration combination, and determining, in addition to the reference member, the at least two component carriers according to the acquired offset or offset sequence An offset of a frame start time of each of the component carriers other than the carrier relative to the reference component carrier, wherein the frame configuration combinations corresponding to the same offset or offset sequence belong to the same set, or include At least one identical component carrier, and the frame configuration combinations of the same component carrier having the same frame configuration belong to the same set;

or,

Obtaining a preset offset or offset sequence, and determining, according to the obtained offset or offset sequence, each of the at least two component carriers except the reference component carrier with respect to the Referring to an offset of a frame start time of the component carrier, acquiring a set of frame configuration combinations corresponding to the offset or offset sequence, and selecting a frame configuration combination from the set of frame configuration combinations, the frame configuration A frame configuration of the specified location in the combination is configured as a frame configuration of the reference component carrier, and a frame configuration of each of the component carriers is determined by using each frame configuration included in the selected frame configuration combination, where corresponding to the same offset or The frame configuration combinations of the offset sequence belong to the same set, or contain at least one identical component carrier, and the frame configuration combinations of the same component carrier having the same frame configuration belong to the same set.
The base station according to claim 20, wherein the second determining module is specifically configured to:

Determining that the offset of each of the at least two component carriers except the reference component carrier is the same as the frame start time of the reference component carrier, which is the acquired offset;

or,

And the offset sequence is identical to the frame configuration of the frame configuration combination except that the frame configuration of the reference component carrier is specified, and each offset in the acquired offset sequence is determined as An offset of a frame start time of each of the at least two component carriers other than the reference component carrier with respect to the reference component carrier.
The base station according to any one of claims 15 to 18, wherein the at least two component carriers are composed of two or more carrier groups, and each of the carrier groups includes one or more component carriers;

The first determining module is specifically configured to:

Determining frame configurations of component carriers in each of the carrier groups, respectively;

The second determining module is specifically configured to:

An offset of a frame start time of each of the component carriers other than the reference component carrier with respect to a frame start time of the reference component carrier is separately determined.
A base station according to any of claims 15-18, wherein said at least two The product of the frame configuration of each component carrier in the carrier carrier is multiplied by the ratio of the number of subframes for downlink data transmission and the number of subframes used for uplink data transmission, and the difference from 1 belongs to a preset range.
The base station according to any one of claims 15 to 18, wherein the communication module is specifically configured to:

And according to a frame configuration of each of the component carriers, communicating with the terminal according to a reference scheduling timing, where the reference scheduling timing is a scheduling timing of an arbitrary frame configuration.
The base station according to any one of claims 15 to 18, wherein the offset of the frame start time is a preset value; or the difference between the offset of the frame start time and the reference value is Within the preset range; or, the offset satisfies that the uplink subframe between the at least two component carriers is not continuous, and the interval time interval is greater than or equal to the carrier switching time.
The base station according to claim 25, wherein the preset value or the reference value is a subframe for the downlink data transmission and a first one of the at least two of the component carriers. The number of subframes between subframes of uplink data transmission;

or,

The preset value or the reference value is determined according to the number of times that the subframe for uplink data transmission and the subframe for downlink data transmission exist simultaneously in the at least two component carriers in one frame.
A terminal, comprising:

a receiving module, configured to receive a frame configuration of at least two component carriers for carrier aggregation sent by the base station;

And an obtaining module, configured to acquire an offset of a frame start time of each of the at least two component carriers except the reference component carrier, where the reference component carrier is Describe at least one of at least two component carriers;

And a communication module, configured to communicate with the base station by using the at least two component carriers.
The terminal according to claim 27, wherein the obtaining module is specifically configured to:

Receiving, by the base station, an offset of a frame start time of each of the at least two component carriers except the reference component carrier with respect to a frame start time of the reference component carrier; or

And determining, by detecting a synchronization signal of each of the component carriers, an offset of a frame start time of each of the at least two component carriers except the reference component carrier with respect to a frame start time of the reference component carrier.