CN106793110B

CN106793110B - Data transmission method and base station

Info

Publication number: CN106793110B
Application number: CN201611059587.9A
Authority: CN
Inventors: 许浩; 楚志远; 舒文江
Original assignee: Shanghai Huawei Technologies Co Ltd
Current assignee: Shanghai Huawei Technologies Co Ltd
Priority date: 2016-11-25
Filing date: 2016-11-25
Publication date: 2020-01-10
Anticipated expiration: 2036-11-25
Also published as: CN106793110A

Abstract

A data transmission method and a base station are disclosed for solving the problem that the existing time slot binding and uplink carrier aggregation are incompatible. The data transmission method comprises the following steps: if the base station detects that a target event is effective, the base station judges whether User Equipment (UE) meets the condition of creating a Carrier Aggregation (CA), wherein the target event comprises a time slot binding (TTI Bundling) event; if yes, the base station sends an indication message for creating the CA to the UE; a base station receives a confirmation message for creating a CA sent by UE; the base station acquires the signal quality of each carrier corresponding to the CA; and the base station determines the sending mode of the uplink data according to the signal quality of each carrier and sends the determined sending mode to the UE so that the UE sends the uplink data according to the determined sending mode.

Description

Data transmission method and base station

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a data transmission method and a base station.

Background

At the edge of a cell, the quality of a general channel is poor, and the transmission power of User Equipment (UE) is low, so that uplink data cannot be correctly sent to a base station in time, and the uplink coverage of the cell is affected. The Time slot binding (english: Transmission Time Interval Bundling) technology is a function introduced by the 3GPP protocol, and aims to improve the uplink coverage of a cell, and the basic principle is as follows: the method comprises the steps of sending the same Transport Block (TB) on 4 continuous uplink subframes, wherein each TB carries different hybrid automatic retransmission request (HARQ) redundancy versions, and using an Acknowledgement (ACK)/Negative Acknowledgement (NACK) as a unified response after all transmissions corresponding to the TB are received and subjected to soft combining processing.

The TTI Bundling technique is mainly applied to Voice over Internet Protocol (VoIP) services, and for a UE at a cell edge, the maximum transmission power is low, and when the number of uplink VoIP data retransmissions is too many, the delay of the VoIP service is large, thereby affecting the Voice service experience.

The 3GPP Release-10 protocol defines a Carrier Aggregation (CA) technology, and when the UE configures an uplink CA, the UE can transmit uplink data on multiple carriers to obtain a higher throughput rate. However, the 3GPP protocol defines TTI Bundling to be incompatible with uplink CA because TTI Bundling is effective when UE power is limited at the cell edge, where the UE transmit power may not be sufficient to support transmitting data on multiple carriers in one TTI.

Disclosure of Invention

The application provides a data transmission method and a base station, which are used for solving the problem that the existing time slot binding is incompatible with uplink carrier aggregation.

A first aspect provides a data transmission method to achieve a larger gain when timeslot bonding and uplink carrier aggregation jointly take effect. The base station and the UE both support timeslot bonding and uplink carrier aggregation, and if the base station detects that a target event is valid, taking the target event as a timeslot bonding TTI Bundling event as an example, the base station determines whether the UE meets a condition for creating a carrier aggregation CA, generally speaking, as long as multiple carriers exist on an uplink, for example: the method comprises the steps that except for a main carrier and an auxiliary carrier, the UE can be determined to meet the condition of CA creation, then the base station indicates the UE to create the CA, after the base station confirms that the UE creates the CA, the base station obtains the signal quality of each carrier corresponding to the CA, and determines the specific sending mode of uplink data according to the signal quality of each carrier, so that the UE sends the uplink data according to the determined sending mode, namely the uplink data are sent together through a plurality of carriers, and the uplink data are preferentially sent by the carriers with good signal quality.

In some possible implementations, since the principle of the CA technology is to transmit data through multiple carriers, the condition for creating CA may be that multiple carriers exist on an uplink of a UE, and when multiple carriers exist on the uplink, the UE satisfies a basic condition for creating CA. There is also a possibility that some communication operations on the UE side are stopped to reduce the load of the UE, so that the UE meets the condition for creating CA.

In some possible implementation manners, the CA includes a primary carrier and a secondary carrier, and if the signal quality of the primary carrier is higher than that of the secondary carrier, the base station instructs the UE to preferentially send one uplink data on the primary carrier and then send another uplink data on the secondary carrier, where the primary carrier or the secondary carrier of an uplink subframe can only send one uplink data in the same TTI, that is, multiple carriers separately send uplink data in sequence, and if the primary carrier or the secondary carrier does not have an uplink subframe in the TTI, the carrier with the uplink subframe is selected to send the uplink data. If the signal quality of the auxiliary carrier is higher than that of the main carrier, the base station instructs the UE to preferentially send one uplink data on the auxiliary carrier, and then sends another uplink data on the main carrier in the next TTI. If the signal quality of the primary carrier is equal to the signal quality of the secondary carrier, the base station instructs the UE to preferentially send one uplink data on the secondary carrier, and then send another uplink data on the primary carrier in the next TTI, or preferentially send one uplink data on the primary carrier, and then send another uplink data on the secondary carrier, where the signal quality of the primary carrier is equal to the signal quality of the secondary carrier and is used to indicate that the signal quality of the primary carrier is the same as or similar to the signal quality of the secondary carrier, and a specific similar range may be determined by the base station, which is not specifically limited herein.

A second aspect provides a data transmission method to achieve a larger gain when timeslot bonding and uplink carrier aggregation jointly take effect. The method comprises the steps that a base station and UE both support time slot binding and uplink carrier aggregation, if the base station detects that a target event is effective, the base station takes the target event as a carrier aggregation CA event as an example, the base station obtains the cell signal quality of the position where User Equipment (UE) is located, and judges whether the UE meets the condition of creating time slot binding TTI Bundling according to the cell signal quality of the position where the UE is located; generally, when the UE is located at a cell edge position, the channel quality is poor, the transmission power of the UE is low, that is, the condition for creating TTI Bundling is met, the base station acquires all uplink subframe numbers corresponding to the CA in one radio frame, and determines whether all uplink subframe numbers are not less than a preset threshold, where the preset threshold is a lowest value of the subframe numbers corresponding to TTI Bundling, and is generally 4. When the number of all uplink subframes meets a preset threshold, the base station indicates the UE to create TTI Bundling, after the base station confirms that the UE creates TTI Bundling, the base station obtains the signal quality of each carrier corresponding to the CA, and determines a specific uplink data sending mode according to the signal quality of each carrier, so that the UE sends uplink data according to the determined sending mode, namely, the uplink data is sent through a plurality of carriers together, the carriers with good signal quality preferentially send the uplink data, wherein only one uplink data can be sent by the carriers of the uplink subframes in the same TTI, the uplink data are sent separately in sequence, and therefore the compatibility of TTIBundling and the CA is achieved, and the frequency hopping gain is obtained by separately sending the uplink data on the plurality of carriers.

In some possible implementations, the condition for creating TTI Bundling at least includes that the signal quality of the cell where the UE is located is lower than a preset value. Generally, when the UE is located at the edge of the cell, the channel quality is generally poor, and the transmission power of the UE is low, so that uplink data cannot be correctly sent to the base station in time, and the uplink coverage of the cell is affected.

In some possible implementation manners, the CA includes a primary carrier and a secondary carrier, and if the signal quality of the primary carrier is higher than that of the secondary carrier, the base station instructs the UE to preferentially send one uplink data on the primary carrier and then send another uplink data on the secondary carrier, where the primary carrier or the secondary carrier having an uplink subframe in the same TTI can only send one uplink data, that is, multiple carriers separately send uplink data in sequence. If the signal quality of the auxiliary carrier is higher than that of the main carrier, the base station instructs the UE to preferentially send one uplink data on the auxiliary carrier, and then sends another uplink data on the main carrier in the next TTI. If the signal quality of the primary carrier is equal to the signal quality of the secondary carrier, the base station instructs the UE to preferentially send one uplink data on the secondary carrier, and then send another uplink data on the primary carrier in the next TTI, or preferentially send one uplink data on the primary carrier, and then send another uplink data on the secondary carrier, where the signal quality of the primary carrier is equal to the signal quality of the secondary carrier and is used to indicate that the signal quality of the primary carrier is the same as or similar to the signal quality of the secondary carrier, and a specific similar range may be determined by the base station, which is not specifically limited herein.

A third aspect provides a base station configured to implement the functionality of the method provided by the first aspect or any one of the implementations of the first aspect or any one of the second aspect or any one of the implementations of the second aspect. The functions may be implemented by hardware, or by hardware executing corresponding software, where the hardware or software includes one or more modules corresponding to the above functions.

A third aspect provides a storage medium having program code stored therein, which when executed by a communication device performs the method provided by the first aspect or any one of the implementations of the first aspect or any one of the second aspect or any one of the implementations of the second aspect. The storage medium includes, but is not limited to, a flash memory (english: flash memory), a hard disk (HDD) or a Solid State Drive (SSD).

Drawings

FIG. 1 is a system architecture diagram of data transmission in an embodiment of the present invention;

fig. 2 is a schematic diagram of an embodiment of a data transmission method according to an embodiment of the present invention;

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

fig. 4 is a schematic view of an application scenario of the data transmission method according to the embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 6 is another schematic structural diagram of a base station in the embodiment of the present invention;

fig. 7 is another schematic structural diagram of a base station in the embodiment of the present invention.

Detailed Description

Before the embodiments of the present invention are described, the system framework of the present invention is described, which is applied to a network including, but not limited to, a Long Term Evolution (LTE) network. As shown in fig. 1, a UE transmits uplink data to a base station through an uplink, where both the UE and the base station support TTI Bundling and CA, and the base station is configured to instruct the UE to create TTI Bundling or CA. In order to realize the compatibility of TTI Bundling and CA, the TTI Bundling and CA are controlled by the base station to take effect simultaneously, so that a larger gain is obtained when the time slot binding and uplink carrier aggregation take effect jointly. Under the condition that TTI Bundling is firstly effective, the base station controls the UE to create the CA, and TTI Bundling and the CA are simultaneously effective. Suppose that under the condition that CA is first effective, the base station controls UE to create TTI Bundling, and TTIBundling and CA are effective at the same time. Therefore, the effective condition of TTIBundling is expanded from the condition that the number of uplink subframes in one radio frame of a single carrier meets a preset threshold value to the condition that the number of uplink subframes added in one radio frame of a plurality of carriers meets the preset threshold value, and meanwhile, uplink data are separately sent on the main carriers to obtain frequency hopping gain.

Referring to fig. 2, a schematic diagram of an embodiment of a data transmission method according to an embodiment of the present invention includes the following specific processes:

step 201, the base station detects that a target event is effective, wherein the target event includes a TTI Bundling event.

When the base station detects that the target event is completed or occurs, the target event is effective, and taking the target event as a TTI Bundling event as an example, the target event indicates that the TTI Bundling event is effective on only one carrier such as a primary carrier (Pcell), but the UE does not yet create the CA, and therefore, in order to be compatible with the CA, the CA needs to be created.

Step 202, the base station judges whether the UE meets the condition of creating CA; if yes, go to step 203, otherwise, end the process.

The base station first determines whether the UE satisfies a CA creation condition, where the CA creation condition includes a plurality of conditions, and in some possible implementations, the CA creation condition at least includes that a plurality of carriers exist on an uplink of the UE.

Since the principle of the CA technology is to transmit data through multiple carriers, the condition for creating CA may be that multiple carriers exist on an uplink of a UE, and when multiple carriers exist on the uplink, the UE satisfies the basic condition for creating CA. There is also a possibility that some communication operations on the UE side are stopped to reduce the load of the UE, so that the UE meets the condition for creating CA.

Step 203, the base station sends an indication message for creating the CA to the UE.

Step 204, the UE creates a CA according to the indication message.

Step 205, the base station receives the confirmation message of creating CA sent by the UE.

When the base station determines that the UE meets the condition of creating the CA, the base station sends an indication message of creating the CA to the UE for indicating the UE to create the CA, and the UE sends a confirmation message of creating the CA to the base station after creating the CA according to the process of creating the CA, so that the base station can know that the UE has created the CA.

And step 206, the base station acquires the signal quality of each carrier corresponding to the CA, and determines the sending mode of the uplink data according to the signal quality of each carrier.

Since the transmission method of the uplink data is related to the signal quality of each carrier corresponding to the CA, the corresponding transmission method is determined according to the signal quality of the carrier. Generally, if the signal quality of a carrier is high, uplink data is preferentially transmitted, where only one uplink data can be transmitted on each carrier of an uplink subframe in the same TTI, that is, multiple carriers separately transmit uplink data in sequence.

In some possible implementation manners, the CA includes a primary carrier and a secondary carrier, and the determining, by the base station according to the signal quality of each carrier, the sending manner of the uplink data includes:

if the signal quality of the main carrier is higher than that of the auxiliary carrier, determining that one piece of uplink data is preferentially sent on the main carrier, and then sending the other piece of uplink data on the auxiliary carrier, wherein each main carrier or auxiliary carrier can only send one piece of uplink data;

if the signal quality of the auxiliary carrier is higher than that of the main carrier, determining that one piece of uplink data is preferentially sent on the auxiliary carrier, and then sending the other piece of uplink data on the main carrier;

if the signal quality of the main carrier is equal to the signal quality of the auxiliary carrier, determining to preferentially send one piece of uplink data on the auxiliary carrier, and then sending another piece of uplink data on the main carrier or preferentially sending one piece of uplink data on the main carrier, and then sending another piece of uplink data on the auxiliary carrier;

wherein, the primary carrier or the secondary carrier with the uplink subframe transmits an uplink data in the same TTI.

The basic principle of TTI Bundling is as follows: and transmitting the same Transport Block (TB) on 4 continuous uplink subframes, but each TB carries different HARQ redundancy versions. According to the signal quality of the primary carrier and the secondary carrier, the possible transmission modes are as follows:

the carrier with good signal quality preferentially sends uplink data, and each carrier of the uplink subframe in the same TTI respectively sends one uplink data in sequence, for example: the main carrier sends uplink data A, the rear auxiliary carrier 1 sends uplink data B, the rear auxiliary carrier 2 sends uplink data C, and the rear auxiliary carrier 3 sends uplink data D.

And step 207, the base station sends the determined sending mode to the UE.

And step 208, the UE transmits the uplink data according to the determined transmission mode.

And after determining the sending mode of the uplink data, the base station sends the sending mode to the UE so as to instruct the UE to send the uplink data according to the determined sending mode.

Referring to fig. 3, another embodiment of a data transmission method according to an embodiment of the present invention is illustrated, and a specific flow of the embodiment is as follows:

step 301, the base station detects that a target event is effective, wherein the target event comprises a CA event.

The base station detects that a target event is executed or occurring, and the like, and indicates that the target event is effective, taking the target event as a CA event as an example, indicates that uplink data transmission on multiple carriers is effective, but the UE has not created TTI Bundling yet, and therefore, in order to be compatible with the TTI Bundling, TTI Bundling needs to be created.

Step 302, the base station obtains the cell signal quality of the location where the user equipment UE is located.

Step 303, the base station judges whether the UE meets the condition of creating TTI Bundling according to the signal quality of the cell at the position; if yes, go to step 304, otherwise, end the process.

And if the base station determines that the CA event is effective and the TTI Bundling is not effective, judging whether the UE meets the condition for creating the TTI Bundling according to the acquired cell signal quality of the position of the UE, wherein the effective condition of the TTI Bundling is that the transmission power of the UE is low and the uplink coverage of a cell is influenced.

In some possible implementations, the condition for creating TTI Bundling at least includes that a signal quality of a cell in which the UE is located is lower than a preset value. When the UE is located at the edge of the cell, the quality of a general channel is poor, and the transmission power of the UE is low, so that uplink data cannot be correctly sent to the base station in time, and the uplink coverage of the cell is affected, where the value of the preset value is determined by the base station according to actual conditions, and is not specifically limited here.

Step 304, the base station obtains all uplink subframe numbers corresponding to the CA in a wireless frame.

305, the base station judges whether the number of all uplink subframes is not less than a preset threshold value; if yes, go to step 306, otherwise, end the process.

The base station extends from the condition that the number of all uplink subframes corresponding to the existing single carrier in one radio meets a preset threshold to the condition that the number of all uplink subframes corresponding to the CA in one radio meets the preset threshold, that is, the number of all uplink subframes corresponding to a plurality of carriers in one radio frame is not less than the preset threshold, and the TTI Bundling is implemented by transmitting the same TB on 4 continuous uplink subframes, so the preset threshold is generally 4.

Step 306, the base station sends an indication message for creating TTI Bundling to the UE.

And 307, the UE creates TTI Bundling according to the indication message.

Step 308, the base station receives the confirmation message for creating TTI Bundling sent by the UE.

Step 309, the base station obtains the signal quality of each carrier corresponding to the CA, and determines the sending mode of the uplink data according to the signal quality of each carrier.

In some possible implementation manners, the CA includes a primary carrier and a secondary carrier, and the determining, by the base station according to the signal quality of each carrier, the transmission manner of the uplink data includes:

and if the signal quality of the main carrier is equal to that of the auxiliary carrier, determining to preferentially send one piece of uplink data on the auxiliary carrier, and then sending another piece of uplink data on the main carrier or preferentially sending one piece of uplink data on the main carrier, and then sending another piece of uplink data on the auxiliary carrier, wherein the main carrier or the auxiliary carrier with uplink subframes sends one piece of uplink data in the same TTI.

As shown in fig. 4, in order to ensure that the UE transmits uplink data with as much concentrated power as possible in the TTI Bundling state, the base station is required to control the UE to preferentially transmit a TB on the PCC or the SCC, and it is assumed that corresponding TBs are respectively denoted as TB1, TB2, TB3, and TB4, for example: TB1, TB2 are transmitted on the primary carrier, and TB3 and TB4 are transmitted on the secondary carrier.

It can be seen that, when the UE is connected to only one carrier, the PCC does not have enough uplink subframe number to take effect, the uplink CA is established so that the UE has two carriers connected to the PCC/SCC at the same time, and then 4 TTI data blocks are jointly sent through the PCC/SCC to expand the effective scenario of TTI Bundling. And meanwhile, the TTI Bundle data block is separately sent on the PCC/SCC to acquire frequency hopping gain.

And step 310, the base station sends the determined sending mode to the UE.

And 311, the UE sends the uplink data according to the determined sending mode.

The data transmission method is described in the embodiments shown in fig. 2 and fig. 3, and the structure of the base station is described below, as shown in fig. 5, which is a schematic structural diagram of the base station, the base station 500 includes a processor 501, a memory 502, and a transceiver 503, the processor 501, the memory 502, and the transceiver 503 are communicatively connected, and the processor 501 may be a central processing unit, a network processor, or the like. The memory 502 stores one or more programs therein, the one or more programs including instructions.

The processor 501 is configured to determine whether a user equipment UE meets a condition for creating a carrier aggregation CA if a target event is detected to be in effect, where the target event includes a time slot Bundling event;

the transceiver 503 is configured to send an indication message for creating a CA to the UE if the UE meets the condition for creating the CA; receiving a confirmation message for creating CA sent by the UE;

the processor 501 is further configured to obtain signal quality of each carrier corresponding to the CA, and determine a sending manner of uplink data according to the signal quality of each carrier;

the transceiver 503 is further configured to transmit the determined transmission mode to the UE, so that the UE transmits the uplink data according to the determined transmission mode.

In some possible implementations, the condition to create CA includes at least a presence of multiple carriers on an uplink of the UE. Since the principle of the CA technology is to transmit data through multiple carriers, the condition for creating CA may be that multiple carriers exist on an uplink of a UE, and when multiple carriers exist on the uplink, the UE satisfies the basic condition for creating CA. There is also a possibility that some communication operations on the UE side are stopped to reduce the load of the UE, so that the UE meets the condition for creating CA.

In some possible implementations, the CA includes a primary carrier and a secondary carrier, and the processor 501 is configured to:

Continuing to refer to the base station shown in fig. 5, the processor 501 is configured to obtain the cell signal quality of the location where the UE is located if it is detected that a target event is valid, where the target event includes a carrier aggregation CA event; judging whether the UE meets the condition of creating time slot binding TTI Bundling according to the signal quality of the cell at the position of the UE; if yes, acquiring all uplink subframe numbers corresponding to the CA in a wireless frame, and judging whether all the uplink subframe numbers are not less than a preset threshold value; if so, sending an indication message for creating TTI Bundling to the UE;

the transceiver 503 is configured to receive an acknowledgement message for creating TTI Bundling sent by the UE;

the processor 501 is further configured to obtain signal quality of each carrier corresponding to the CA; and determining the sending mode of the uplink data according to the signal quality of each carrier.

In some possible implementations, the condition for creating TTI Bundling at least includes that a cell signal of a location where the UE is located is lower than a preset value.

Referring to fig. 6, another schematic structural diagram of a base station in the embodiment of the present invention, the base station 600 includes: the device comprises a detection module 601, a judgment module 602, a sending module 603, a receiving module 604, an acquisition module 605 and a determination module 606.

A detection module 601, configured to detect that a target event takes effect, where the target event includes a timeslot binding ttibounding event;

a determining module 603, configured to determine whether the UE meets a condition for creating a carrier aggregation CA if the detecting module 601 detects that the target event is valid;

a sending module 603, configured to send an indication message for creating a CA to the UE if the UE meets a CA creation condition;

a receiving module 604, configured to receive a confirmation message for creating a CA sent by the UE;

an obtaining module 605, configured to obtain signal quality of each carrier corresponding to the CA;

a determining module 606, configured to determine a sending manner of uplink data according to the signal quality of each carrier acquired by the acquiring module 605;

the sending module 603 is further configured to send the sending mode determined by the determining module 606 to the UE, so that the UE sends the uplink data according to the determined sending mode.

In some possible implementations, the condition to create CA includes at least a presence of multiple carriers on an uplink of the UE.

In some possible implementations, the CA includes a primary carrier and a secondary carrier, and the determining module 606 is specifically configured to:

Referring to fig. 7, another schematic structural diagram of a base station in the embodiment of the present invention, the base station 700 includes: the device comprises a detection module 701, an acquisition module 702, a judgment module 703, a sending module 704, a receiving module 705 and a determination module 706.

A detecting module 701, configured to detect that a target event takes effect, where the target event includes a carrier aggregation CA event;

an obtaining module 702, configured to obtain, if the detection module 701 detects that the target event is valid, cell signal quality of a location where the UE is located;

a determining module 703, configured to determine, according to the cell signal quality of the location where the UE is located obtained by the obtaining module 702, whether the UE meets a condition for creating a time slot Bundling TTI;

the obtaining module 702 is further configured to obtain all uplink subframe numbers corresponding to the CA in a radio frame if the UE meets a condition for creating TTI Bundling;

the determining module 703 is further configured to determine whether the number of all uplink subframes is not less than a preset threshold;

a sending module 704, configured to send an indication message for creating TTI Bundling to the UE if the number of all uplink subframes is not less than a preset threshold;

a receiving module 705, configured to receive a confirmation message for creating TTI Bundling sent by the UE;

the obtaining module 702 is further configured to obtain signal quality of each carrier corresponding to the CA;

a determining module 706, configured to determine a sending manner of the uplink data according to the signal quality of each carrier acquired by the acquiring module;

the sending module 704 is further configured to send the sending mode determined by the determining module 706 to the UE, so that the UE sends the uplink data according to the determined sending mode.

In some possible implementations, the condition for creating TTI Bundling at least includes that a signal quality of a cell in which the UE is located is lower than a preset value.

In some possible implementations, the CA includes a primary carrier and a secondary carrier, and the determining module 706 is specifically configured to:

It can be seen that, if the base station detects that the target event is valid, the base station determines whether the UE satisfies the condition for creating the carrier aggregation CA, and generally, it can be determined that the UE satisfies the condition for creating the CA as long as there are multiple carriers on the uplink, the base station instructs the UE to create the CA, and after the base station confirms that the UE creates the CA, the base station acquires the signal quality of each carrier corresponding to the CA, determining a specific uplink data transmission mode according to the signal quality of each carrier, so that the UE transmits uplink data according to the determined transmission mode, that is, the uplink data is transmitted by a plurality of carriers together, the carrier with good signal quality transmits the uplink data preferentially, wherein, each carrier with uplink sub-frame in the same TTI can only transmit one uplink data, and transmit separately in turn, therefore, compatibility of TTI Bundling and CA is achieved, and uplink data is separately sent on a plurality of carriers to obtain frequency hopping gain.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

The system, apparatus and method in the several embodiments provided in this application may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may also be distributed on a plurality of network devices.

All or part of the technical solution of the present invention may be embodied in the form of a computer software product. The computer software product is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a universal serial bus flash disk (USB flash disk), a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, and an optical disk.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some of the technical features may be replaced with features having the same function; such modifications and substitutions do not depart from the scope of the present invention.

Claims

1. A method of data transmission, comprising:

if the base station detects that a target event is effective, the base station judges whether User Equipment (UE) meets the condition of creating a Carrier Aggregation (CA), wherein the target event comprises a time slot binding (TTI Bundling) event;

if yes, the base station sends an indication message for creating CA to the UE;

the base station receives a confirmation message for creating the CA sent by the UE;

the base station acquires the signal quality of each carrier corresponding to the CA;

the base station determines a sending mode of uplink data according to the signal quality of each carrier, and sends the determined sending mode to the UE, so that the UE sends the uplink data according to the determined sending mode;

the CA comprises a main carrier and an auxiliary carrier, and the base station determines the sending mode of the uplink data according to the signal quality of each carrier, and the sending mode comprises the following steps:

if the signal quality of the main carrier is higher than that of the auxiliary carrier, determining that one piece of uplink data is preferentially sent on the main carrier, and then sending the other piece of uplink data on the auxiliary carrier;

if the signal quality of the auxiliary carrier is higher than that of the main carrier, determining that one piece of uplink data is preferentially sent on the auxiliary carrier and the other piece of uplink data is preferentially sent on the main carrier;

2. The data transmission method according to claim 1, wherein the condition for creating CA at least comprises: there are multiple carriers on the uplink of the UE.

3. A method of data transmission, comprising:

if the base station detects that a target event is effective, the base station acquires the cell signal quality of the position of User Equipment (UE), wherein the target event comprises a Carrier Aggregation (CA) event;

the base station judges whether the UE meets the condition of creating time slot binding TTIBundling according to the signal quality of the cell at the position of the UE;

if yes, the base station acquires all uplink subframe numbers corresponding to the CA in a wireless frame, and judges whether all uplink subframe numbers are not less than a preset threshold value;

if so, the base station sends an indication message for creating TTI Bundling to the UE;

the base station receives a confirmation message for creating TTI Bundling sent by the UE;

4. The data transmission method according to claim 3, wherein the condition for creating TTI Bundling at least includes that the signal quality of the cell where the UE is located is lower than a preset value.

5. A base station, comprising:

the device comprises a detection module, a processing module and a processing module, wherein the detection module is used for detecting that a target event takes effect, and the target event comprises a time slot binding TTI Bundling event;

a judging module, configured to judge whether a user equipment UE meets a condition for creating a carrier aggregation CA if the detecting module detects that the target event is valid;

a sending module, configured to send an indication message for creating a CA to the UE if the UE meets a condition for creating a CA;

a receiving module, configured to receive a confirmation message for creating a CA sent by the UE;

an obtaining module, configured to obtain signal quality of each carrier corresponding to the CA;

a determining module, configured to determine a sending manner of uplink data according to the signal quality of each carrier acquired by the acquiring module;

the sending module is further configured to send the sending mode determined by the determining module to the UE, so that the UE sends the uplink data according to the determined sending mode;

the CA includes a primary carrier and a secondary carrier, and the determining module is specifically configured to:

6. The base station of claim 5, wherein the condition for creating CA comprises at least: there are multiple carriers on the uplink of the UE.

7. A base station, comprising:

a detection module, configured to detect that a target event takes effect, where the target event includes a carrier aggregation CA event;

an obtaining module, configured to obtain, if the detection module detects that the target event is valid, a cell signal quality of a location where the user equipment UE is located;

a judging module, configured to judge whether the UE meets a condition for creating timeslot binding according to the cell signal quality of the location where the UE is located, which is obtained by the obtaining module;

the obtaining module is further configured to obtain all uplink subframe numbers corresponding to the CA in one radio frame if the UE meets a condition for creating a tti bundling;

the judging module is also used for judging whether the number of all the uplink subframes is not less than a preset threshold value;

a sending module, configured to send an indication message for creating a TTIBundling to the UE if the number of all uplink subframes is not less than a preset threshold;

a receiving module, configured to receive a confirmation message for creating a ttibdring sent by the UE;

the obtaining module is further configured to obtain signal quality of each carrier corresponding to the CA;

8. The base station of claim 7, wherein the condition for creating TTI Bundling comprises at least that the signal quality of the cell where the UE is located is lower than a preset value.

9. A base station, comprising:

a processor, a memory, and a transceiver, the processor, the memory, and the transceiver communicatively coupled;

wherein the memory stores one or more programs therein, the one or more programs comprising instructions that when executed by the base station cause the base station to perform the method of any of claims 1 to 4.