WO2014101061A1

WO2014101061A1 - Method, user equipment, and base station for controlling uplink carrier aggregation

Info

Publication number: WO2014101061A1
Application number: PCT/CN2012/087726
Authority: WO
Inventors: 张健; 曾清海
Original assignee: 华为技术有限公司
Priority date: 2012-12-27
Filing date: 2012-12-27
Publication date: 2014-07-03
Also published as: CN104025649B; CN104025649A

Abstract

The present invention provides a method, a user equipment, and a base station for controlling uplink carrier aggregation. The method comprises: a user equipment receiving a cell control message sent by a base station in a situation of using a second cell to send uplink information (101); and according to the cell control message, using a first cell to send the uplink information, and stopping using the second cell to send the uplink information (102). The present invention enables effective handover between the first cell and the second cell, which prevents excessively long interruption time caused by frequent handover and improves uplink throughput.

Description

Method, user equipment and base station for controlling uplink carrier aggregation

Embodiments of the present invention relate to the field of communications technologies, and, more particularly, to a method, a user equipment, and a base station for controlling uplink carrier aggregation. Background technique

With the development of mobile communication and broadband wireless access technologies, the two businesses are mutually infiltrated. In order to meet the needs of mobile communication broadband and to meet the challenges of broadband communication mobility, the 3rd generation partnership project (the 3rd generation partnership) The project, 3GPP) working group put forward higher performance requirements for communication systems, for example, higher requirements for peak rate and system bandwidth. In order to meet these requirements, 3GPP advanced term evolution advanced (LTE-A) introduces carrier aggregation (CA).

The CA can obtain larger bandwidth by aggregating multiple consecutive or non-contiguous component carriers (CCs), thereby increasing the peak data rate and system throughput, and also solving the problem of carrier spectrum discontinuity. A user equipment (UE) can support multiple CC aggregations in the downlink and uplink, and the CCs can be in the same frequency band or different frequency bands. The CCs aggregated by the user equipment are provided by the same base station, which is a CA (intra-eNB CA) in the base station, for example, a plurality of CCs of the co-site provided by the base station or by the base station and its remote radio head (RRH) Multiple CCs of non-co-sites provided separately. The CCs aggregated by the user equipment may also be provided by different base stations to provide inter-base station CA (inter-eNB CA), for example, different base stations to provide different CCs for UE services. One CC corresponds to one cell. The cell participating in the CA includes one primary cell (PCell) and at least one secondary cell (SCell). PCell and SCell may be collectively referred to as a serving cell.

For the uplink CA, if the user equipment sends uplink information at the same time, the PCell and the SCell may reduce the uplink coverage of the cell due to the power limitation. Due to the radio frequency (RF) capability of the user equipment, the user equipment can only send uplink information in one cell at a certain transmission time interval (,). For example, the user equipment supports only one uplink radio frequency chain. Case. In view of the above problems, for the uplink CA, how the user equipment sends the uplink information is an issue to be solved by the industry. Summary of the invention

The present invention provides a method for controlling uplink carrier aggregation, a user equipment, and a base station, which can effectively control the user equipment to send uplink information in the case of carrier aggregation.

In a first aspect, the present invention provides a method for controlling uplink carrier aggregation, including: receiving, by using a second cell, uplink cell information, a cell control message sent by a base station, where the cell control message is used to indicate that the first cell is used for sending Uplink information;

And transmitting, by using the first cell, uplink information, and using the second cell to send uplink information, where the first cell and the second cell are used for carrier aggregation.

In conjunction with the first aspect, in a first possible implementation, the cell control message is a media access control unit MAC CE or an uplink grant.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, the cell control message is further used to activate an uplink of the first cell, and activate an uplink of the second cell. ;

And sending, according to the cell control message, the first cell to send the uplink information, and stopping using the second cell to send the uplink information, including:

And transmitting, according to the cell control message, the uplink of the first cell and using the first cell to send the uplink information, deactivating the uplink of the second cell, and stopping using the second cell to send the uplink information.

With reference to the first aspect, or any one of the foregoing possible implementation manners of the first aspect, in a third possible implementation manner, the method further includes:

The hybrid of the second cell automatically requests to retransmit the HARQ buffer corresponding to each uplink HARQ process on the HARQ entity.

With the first aspect or the foregoing possible implementation manner of the foregoing aspect, in a fourth possible implementation, the first cell is used to send the uplink information, and the second cell is sent to be sent according to the cell control message. The uplink information includes:

In the case that the second cell performs a random access procedure, the random access procedure performed in the second cell is stopped;

A random access procedure is initiated on the first 'area'.

With the first aspect or the foregoing any possible implementation manner of the foregoing aspect, in a fifth possible implementation, the first cell is used to send the uplink information, and the second cell is sent to be sent according to the cell control message. The uplink information includes: When receiving the cell control message, and in the case of the HARQ feedback information or the scheduling request information to be sent, the second cell is used to send the HARQ feedback information or the scheduling request information;

After the second cell sends the HARQ feedback information or the scheduling request information, the first cell sends the uplink information, and stops using the second cell to send the uplink information.

With reference to the fifth possible implementation manner of the foregoing aspect, in a sixth possible implementation manner, when the cell control message is received and the HARQ feedback information or the scheduling request information to be sent is received, the second cell is used. Sending the HARQ feedback information or the scheduling request information includes:

In the case that the HARQ feedback information or the scheduling request information to be transmitted is successfully decoded in the subframe in which the cell control message is successfully decoded, the second cell is used to send the HARQ feedback information or the scheduling request information.

In a second aspect, the present invention provides a method for controlling uplink carrier aggregation, including: sending, by using a second cell, uplink control information, to a user equipment, where the cell control message is used to indicate the The user equipment sends the uplink information by using the first cell.

Receiving uplink information sent by the user equipment by using the first cell, where the first cell and the second cell are used for carrier aggregation, and the user equipment stops using the second cell to send uplink information.

With reference to the second aspect, in a first possible implementation manner, the cell control message is a media access control unit MAC CE or an uplink grant.

With the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation manner, the cell control message is further configured to enable the user equipment to activate an uplink of the first cell, to activate the first Upstream of the second cell.

With reference to the second aspect, or any one of the foregoing possible implementation manners of the second aspect, in a third possible implementation, the receiving, by the user equipment, the uplink information sent by the first cell, includes: performing the second cell In the case of a random access procedure, stopping the random access procedure performed in the second cell;

A random access procedure is performed in the first cell.

In combination with the second aspect or any of the above possible implementation manners of the second aspect, in the fourth In an implementation manner, the receiving, by the user equipment, the uplink information sent by the first cell, includes: receiving, by the user equipment, the hybrid automatic request retransmission HARQ feedback information or scheduling request information, where the HARQ feedback is sent by the user equipment, where the HARQ feedback is received. The information or the scheduling request information is sent by the user equipment when the cell control message is received, and the HARQ feedback information or the scheduling request information to be sent is sent;

And receiving, in the next subframe after the user equipment sends the HARQ feedback information or the scheduling request information by using the second cell, receiving, by the user equipment, the uplink information sent by the first cell of the base station.

With reference to the second aspect, or any one of the foregoing possible implementation manners of the second aspect, the receiving, by the user equipment, the uplink information sent by the user equipment, in the fifth possible implementation manner, The second cell sends the hybrid automatic request retransmission HARQ feedback information or the scheduling request information, where the HARQ feedback information or the scheduling request information is the HARQ feedback that the user equipment needs to send on the subframe in which the cell control message is successfully decoded. Sent in the case of information or the scheduling request information;

In a third aspect, the present invention provides a user equipment, including:

a receiving unit, configured to receive a cell control message sent by the base station, where the cell control message is used to indicate that the first cell sends uplink information;

And a sending unit, configured to send uplink information by using the first cell according to the cell control message, and stop using the second cell to send uplink information, where the first cell and the second cell are used for carrier aggregation.

With the third aspect, in a first possible implementation manner, the cell control message is further used to activate an uplink of the first cell to deactivate an uplink of the second cell;

The user equipment also includes:

a first control unit, configured to activate an uplink of the first cell according to the cell control message, so that the sending unit sends the uplink information by using the first cell, to deactivate a downlink of the second cell, so that the sending unit stops using the The second cell sends the uplink information.

With the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation, the user equipment further includes: The second control unit is configured to automatically retransmit the HARQ buffer corresponding to each uplink HARQ process on the HARQ entity.

With reference to the third aspect, or the first possible implementation manner of the third aspect, in a third possible implementation manner, the user equipment further includes:

And a third control unit, configured to stop a random access procedure being performed by the second cell, and initiate a random access procedure on the first cell.

With the third aspect or the first possible implementation manner of the third aspect, in a fourth possible implementation manner, the sending unit is specifically configured to: when the receiving unit receives the cell control message, and is to be sent In the case of the HARQ feedback information or the scheduling request information, the second cell is used to send the HARQ feedback information or the scheduling request information;

The sending unit is configured to: use the first cell to send the uplink information, and stop using the second cell to send the uplink information, in the next subframe after the second cell sends the HARQ feedback information or the scheduling request information. .

With the fourth possible implementation of the third aspect, in a fifth possible implementation, the user equipment further includes:

a fourth control unit, configured to decode the cell control message;

The sending unit is configured to send the HARQ feedback information or the scheduling request information by using the second cell when the HARQ feedback information or the scheduling request information to be sent is successfully sent in the subframe where the cell control message is successfully decoded.

In a fourth aspect, the present invention provides a base station, including:

a sending unit, configured to send a cell control message to the user equipment, where the cell control message is used to indicate that the user equipment sends the uplink information by using the first cell;

The receiving unit is configured to receive uplink information sent by the user equipment by using the first cell, where the first cell and the second cell are used for carrier aggregation.

With reference to the fourth aspect, in a first possible implementation, the cell control message is further used to enable the user equipment to activate an uplink of the first cell to deactivate an uplink of the second cell.

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, in a second possible implementation manner, the base station further includes:

And a control unit, configured to stop a random access procedure being performed by the second cell, and perform a random access procedure in the first cell.

In combination with the fourth aspect or the first possible implementation of the fourth aspect, in a third possible implementation In the current mode,

The receiving unit is configured to receive, by the user equipment, the hybrid automatic request retransmission HARQ feedback information or the scheduling request information by using the second cell, where the HARQ feedback information or the scheduling request information is that the user equipment receives the cell control And sending the message and the HARQ feedback information to be sent or the scheduling request information;

The receiving unit is configured to receive the uplink information sent by the user equipment by using the first cell after receiving the next subframe in which the user equipment sends the HARQ feedback information or the scheduling request information by using the second cell.

In conjunction with the fourth aspect or the first possible implementation of the fourth aspect, in a fourth possible implementation,

The receiving unit is configured to receive, by the user equipment, the hybrid automatic request retransmission HARQ feedback information or the scheduling request information by using the second cell, where the HARQ feedback information or the scheduling request information is that the user equipment successfully decodes the cell control And sending the HARQ feedback information to be sent or the scheduling request information in the subframe where the message is located;

In a fifth aspect, the present invention provides a user equipment, including:

a receiver, configured to receive a cell control message sent by the base station, where the cell control message is used to indicate that the first cell sends uplink information;

The transmitter is configured to send, by using the first cell, uplink information, and stop using the second cell to send uplink information, where the first cell and the second cell are used for carrier aggregation.

With reference to the fifth aspect, in a first possible implementation manner, the cell control message is further used to activate an uplink of the first cell to activate an uplink of the second cell;

The user equipment also includes:

a processor, configured to activate, according to the cell control message, an uplink of the first cell, so that the sending unit sends the uplink information by using the first cell, to deactivate a downlink of the second cell, so that the sending unit stops using the second cell Send the uplink information.

With reference to the fifth aspect, in a second possible implementation, the user equipment further includes: a processor, configured to automatically retransmit the hybrid of the second cell to each uplink on the HARQ entity The HARQ buffer corresponding to the HARQ process is cleared.

With reference to the fifth aspect, in a third possible implementation, the user equipment further includes: a processor, configured to stop a random access procedure being performed by the second cell, and initiate a random access procedure on the first cell .

With reference to the fifth aspect, in a fourth possible implementation manner, the sending device is specifically configured to: when the receiving unit receives the cell control message, and in the case that the HARQ feedback information or the scheduling request information to be sent is to be sent, Using the second cell to send the HARQ feedback information or the scheduling request information;

The transmitter is specifically configured to use the first cell to send the uplink information, and use the second cell to send the uplink information, in the next subframe after the second cell sends the HARQ feedback information or the scheduling request information. .

With the fourth possible implementation of the fifth aspect, in a fifth possible implementation, the user equipment further includes:

a processor, configured to decode the cell control message;

The transmitter is specifically configured to send the HARQ feedback information or the scheduling request information by using the second cell when the HARQ feedback information or the scheduling request information to be sent is successfully decoded in the subframe where the cell control message is located.

In a sixth aspect, the present invention provides a base station, including:

a transmitter, configured to send a cell control message to the user equipment, where the cell control message is used to indicate that the user equipment sends the uplink information by using the first cell;

And a receiver, configured to receive uplink information sent by the user equipment by using the first cell, where the first cell and the second cell are used for carrier aggregation.

In conjunction with the sixth aspect, in a first possible implementation, the cell control message is further configured to enable the user equipment to activate an uplink of the first cell to deactivate an uplink of the second cell.

With reference to the sixth aspect, in a second possible implementation manner, the base station further includes: a processor, configured to stop a random access procedure being performed by the second cell, and perform a random access procedure in the first cell.

In conjunction with the sixth aspect or the first possible implementation of the sixth aspect, in a third possible implementation manner,

The receiver is specifically configured to receive, by the user equipment, the hybrid automatic request retransmission HARQ feedback information or scheduling request information by using the second cell, where the HARQ feedback information or the scheduling request The request information is sent by the user equipment when receiving the cell control message and the HARQ feedback information or the scheduling request information to be sent;

The receiver is specifically configured to receive the uplink information sent by the user equipment by using the first cell after receiving the HARQ feedback information or the scheduling request information sent by the user equipment by using the second cell.

In conjunction with the sixth aspect or the first possible implementation of the sixth aspect, in a fourth possible implementation,

The receiver is specifically configured to receive, by the user equipment, the hybrid automatic request retransmission HARQ feedback information or the scheduling request information by using the second cell, where the HARQ feedback information or the scheduling request information is that the user equipment successfully decodes the cell control And sending the HARQ feedback information to be sent or the scheduling request information in the subframe where the message is located;

According to the present invention, the user equipment receives the cell control message sent by the base station, and sends uplink information in the first cell according to the cell control message, and stops using the second cell to send the uplink information. It is effective to switch between the first cell and the second cell to avoid excessive interruption time caused by frequent handover and improve uplink throughput.

A seventh aspect of the present invention provides a method for controlling uplink carrier aggregation, including: determining a first type of subframe and a second type of subframe on a frame structure;

In the first type of subframe, the first cell is used to send uplink information, and the second cell is used to send the uplink information.

In the second type of subframe, the second cell is used to send the uplink information, and the use of the first cell to send the uplink information is stopped;

The first cell and the second cell are used for carrier aggregation.

With reference to the seventh aspect, in a first possible implementation, the method further includes: determining a transition point on a frame structure, the transition point isolating the first type of subframe from the second type of subframe; On, stop sending the upstream information.

In an eighth aspect, the present invention provides a user equipment, including:

a control unit, configured to determine a first type of subframe and a second type of subframe on the frame structure;

a sending unit, configured to send uplink information by using the first cell, stop in the first type of subframe Sending the uplink information by using the second cell;

The sending unit is further configured to: use the second cell to send the uplink information, and stop using the first cell to send the uplink information, where the first cell and the second cell are used for performing Carrier aggregation.

In combination with the eighth aspect, in a first possible implementation manner,

The control unit is further configured to determine a transition point on the frame structure;

The control unit is further configured to control to stop sending the uplink information at the transition point.

In a ninth aspect, the present invention provides a user equipment, including:

a processor, configured to determine a first type of subframe and a second type of subframe on a frame structure;

a transmitter, configured to send uplink information by using the first cell, and stop using the second cell to send the uplink information, in the first type of subframe;

The transmitter is further configured to: use the second cell to send the uplink information, and stop using the first cell to send the uplink information, where the first cell and the second cell are used for performing Carrier aggregation.

In conjunction with the ninth aspect, in a first possible implementation manner,

The processor is further configured to determine a transition point on the frame structure;

The processor is further configured to control to stop sending the uplink information at the transition point.

According to the present invention, the user equipment determines the first type of subframe, the second type of subframe, and the transition point, and uses only the first cell to transmit uplink information in the first type of subframe, and only the second type in the second type of subframe. The cell sends uplink information, and does not send uplink information at the transition point. The user equipment can effectively perform handover in the first cell and the second cell, avoiding time interruption caused by frequent handover, and improving uplink throughput. DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in view of the drawings.

FIG. 1 is a schematic flowchart of a method for controlling uplink carrier aggregation provided by the present invention.

2 is a schematic flowchart of a method for controlling uplink carrier aggregation provided by the present invention.

FIG. 3 is a schematic flowchart of a method for controlling uplink carrier aggregation provided by the present invention.

4a is a schematic diagram of a format of a cell control message MAC CE. Figure 4b is a schematic diagram of a type of static charge for a cell control message.

Figure 4c is a schematic diagram of another type of payload of a cell control message.

Figure 4d is a schematic diagram of another format of a cell control message.

Figure 4e is a schematic diagram of a type of static charge for a cell control message.

FIG. 5 is a schematic flowchart of a method for controlling uplink carrier aggregation provided by the present invention.

6 is a schematic diagram of partitioning of a first type of subframe, a second type of subframe, and a transition point.

7 is a schematic block diagram of a user equipment provided by the present invention.

FIG. 8 is a schematic block diagram of another user equipment provided by the present invention.

9 is a schematic block diagram of a base station provided by the present invention.

FIG. 10 is a schematic block diagram of another base station provided by the present invention.

11 is a schematic block diagram of a user equipment provided by the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the scope of the present invention.

It should be understood that the technical solution of the embodiments of the present invention can be applied to various communication systems, for example, a global system of mobile communication ("GSM") system, code division multiple access (code division multiple access) "CDMA" system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (long term evolution, The cylinder is called "LTE" system, LTE frequency division duplex ("FDD") system, LTE time division duplex (TDD), universal mobile telecommunication system System, the barrel is called "UMTS" and so on.

The UE may also be referred to as a mobile terminal (MT), a mobile user equipment, etc., and may communicate with one or more core networks via a radio access network (RAN), and the user equipment may be mobile. A terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, can be a portable, pocket, handheld, computer built-in or in-vehicle mobile device. The base station may be a base transceiver station (BTS) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station eNB or an e-NodeB in LTE, which is not limited in the present invention.

FIG. 1 is a schematic flowchart of a method for controlling uplink carrier aggregation provided by the present invention. The method of Figure 1 is performed by a user equipment.

101. If the second cell sends the uplink information, the cell control message sent by the base station is received, where the cell control message is used to indicate that the uplink information is sent by using the first cell.

102. The first cell sends the uplink information according to the cell control message, and stops using the second cell to send the uplink information, where the first cell and the second cell are used for carrier aggregation.

Optionally, the uplink information sent by using the second cell or the first cell may include at least one or more of the following: a sounding reference signal (SRS), an uplink demodulation reference signal (demodulation RS, DMRS), Uplink control information (UCI) transmitted by physical uplink control channel (PUCCH), uplink data transmitted by physical uplink shared channel (PUSCH), UCI information transmitted on PUSCH, etc. . The UCI includes at least one or more of the following: a hybrid automatic retransmission request ( HARQ ) acknowledgement (ACK), a negative acknowledgement (NACK), and channel state information (channel state information, CSI). The CSI includes one or more of the following: a channel quality indicator (CQI), a precoding matrix indicator (PMI), a rank indication (RI), and a recoding type indicator. PTI).

Optionally, since the uplink timing of the user equipment in the second cell and the first cell is different, in the case of cell handover, there is a switching point, and the switching point may be N subframes, N slots, or N positive ports. An orthogonal frequency division multiplex (OFDM) symbol, where N is a positive integer greater than or equal to 1. The description of the switching point will be described later, and will not be described here.

It should be noted that in the specification of the present application, "first" and "second" in "first cell" and "second cell" are merely for distinguishing different objects from each other, and are not limited to the modified object. For example, the functions or operations of the objects modified by the "first" and "second" may be interchanged, and such modifications are still within the scope of the embodiments of the present invention. For example, when the first cell is a PCell, the second cell is an SCell; and when the first cell is an SCell, the first cell is a PCell. It should be understandable, For a case where a PCell and a plurality of SCells perform CA, the first cell and the second cell may both be SCells; and when the cell in which the CA is performed is provided by two base stations, both the first cell and the second cell may be used. It is PCell.

According to the method of FIG. 1, the user equipment receives the control of the base station, and can effectively switch between the PCell and the SCell, avoiding excessive interruption time caused by frequent handover, and improving uplink throughput.

Alternatively, the SCell can be activated/deactivated. The PCell can be always active, cannot be activated and deactivated, or the PCell's upstream can be activated and deactivated. For the SCell that can be activated and deactivated, the user equipment does not monitor the physical downlink control channel (PDCCH) on the deactivated SCell, and does not downlink the physical downlink shared channel (PDSCH). Data, and does not transmit data or signaling on the physical uplink shared channel (PUSCH), and does not send uplink signaling of the SCell, such as channel state information (channel), on the physical uplink control channel (PUCCH) of the PCell. State information (CSI), does not transmit the sounding reference signal (SRS) of the SCell. The CSI information includes at least one or more of the following: a channel quality indicator (CQI), a precoding matrix indicator (PMI), a rank indicator (RI), and a precoding type indication ( Precoding type indicator, PTI ). The user equipment may send the foregoing various uplink information and listen to the PDCCH, receive downlink information, and send uplink signaling of the SCell in the PUCCH of the PCell on the activated SCell.

Optionally, as an embodiment, in a case where the PCell is always in an active state and the first cell is a PCell, the user equipment does not need to activate the first cell before using the first cell.

Optionally, as an embodiment, in a case that the PCell is always in an active state and the first cell is an SCell, if the first cell is not activated, the user equipment further needs to receive an activation indication sent by the base station, according to the activation indication. The first cell is activated, where the activation indication may be a Medium Access Control Control Element (MAC CE) for activation/deactivation. The present invention does not limit the sequence in which the user equipment receives the cell control message or the activation indication. Generally, the user equipment receives the activation indication sent by the base station before receiving the cell control message. After the SCell is activated, the user equipment may use the SCell to receive downlink information, and after receiving the cell control message, the user equipment may control the message according to the cell. , Use SCell to send uplink information. When the user equipment receives the cell control message and the activation indication at the same time, the user equipment may perform activation first, and then send according to the cell indicated by the cell control message. User equipment first receives the cell In the case that the control message receives the activation indication again, the user equipment also needs to receive the activation message before it can work. The base station that sends the activation indication may be the base station to which the first cell or the second cell belongs, and the first cell and the second cell may belong to the same base station or different base stations.

Optionally, as an embodiment, the cell control message may be a MAC CE used to indicate that the uplink information is sent by using the first cell, and the cell control message may also be an uplink grant. For example, in a case where the PCell is always in an active state and the PCell is the first cell, the cell control message may be the MAC CE or the uplink grant.

Optionally, as an embodiment, the cell control message may be a MAC CE, where the MAC CE may be used to indicate that the first cell is used to send uplink information, and may also be used to activate the uplink of the first cell and deactivate the second cell. Upstream. For example, in the case that the uplink of the PCell can be activated and deactivated, the cell control message may indicate that the uplink information is sent by using the first cell, and may also be used to enable the user equipment to activate the uplink of the first cell, and deactivate the second. The uplink of the cell. If the user equipment receives the cell control message, the user equipment activates the uplink of the first cell according to the cell control message, and uses the first cell to send uplink information, deactivates the uplink of the second cell, and does not use the second cell to send uplink information. . The above PCell may be the first cell or the second cell. Optionally, if the first cell is a SCell, the cell control message may be used to activate the downlink of the first cell. The cell control message can activate/deactivate the SCell's upstream and downstream, respectively, allowing for more flexible use of the SCell. For example, if the downlink traffic is higher than the preset threshold, the downlink of the SCell may be activated; if the downlink traffic is lower than the preset threshold, the downlink of the SCell may be deactivated.

Optionally, as an embodiment, the user equipment, when receiving the cell control message, automatically retransmits the HARQ corresponding to each uplink HARQ process on the hybrid automatic repeat request ( HARQ ) entity of the second cell. The buffer is empty. In order to avoid the interruption time caused by the handover of the uplink cell, the handover operation of the uplink cell is not frequent. Generally, the user equipment is switched back to the second cell after a certain time. Clearing the HARQ buffer can prevent the user equipment from switching back. Unnecessary uplink non-adaptive HARQ retransmission is performed after the second cell.

Optionally, as an embodiment, if the user equipment is performing a random access procedure in the second cell, stopping the ongoing random access procedure, and initiating a random access procedure in the first cell.

Optionally, in the case of the non-contention based random access procedure, the user equipment receives, in the first cell, a physical downlink control channel (PDCCH) command sent by the base station to trigger a random access procedure ( Order ).

Optionally, in the case that the user equipment is in a random access procedure triggered by the MAC layer, the user The MAC layer of the device selects the random access resource of the first cell and instructs the physical layer to send a random access preamble, and performs a random access procedure in the first cell.

Optionally, as an embodiment, the user equipment sends the HARQ feedback information or the scheduling request information by using the second cell when receiving the cell control message and having HARQ feedback information or scheduling request information to be sent. The user equipment sends the uplink information in the next subframe after the second cell sends the HARQ feedback information or the scheduling request information, and stops using the second cell to send the uplink information. After the second cell sends the HARQ feedback information, the user equipment switches to the first cell, so that the base station can obtain the downlink HARQ transmission result of the second cell in time for corresponding processing, where the HARQ feedback information includes an acknowledgement (acknoledgment, ACK) Feedback information and negative acknowledgment (NACK) feedback information. For example, when receiving the acknowledgement ACK feedback information, the base station may determine that the corresponding transport block (TB) has been successfully sent. If the base station receives the NACK feedback information, the base station may determine that the corresponding TB transmission fails. The base station can directly retransmit the high-level data included in the TB in the first cell, for example, a radio link control (RLC) protocol data unit (PDU).

Optionally, in an embodiment, if the user equipment successfully sends the uplink HARQ feedback information or the scheduling request information to be sent in the subframe where the cell control message is located, the second cell sends the HARQ feedback information or The scheduling request information. It takes a certain processing time for the user equipment to receive and decode the downlink message. Only after successfully decoding the downlink message can the downlink message be determined as the cell control message and whether there is uplink HARQ feedback information or scheduling request to be sent. The user equipment sends the uplink information in the next subframe after the second cell sends the HARQ feedback information or the scheduling request information, and stops using the second cell to send the uplink information.

Optionally, the first cell and the second cell may belong to the same base station, or the first cell and the second cell belong to different base stations. For example, the user equipment may receive the cell control message by using the first cell, where the cell control message is sent by the base station to which the first cell belongs. Alternatively, the user equipment may further receive the cell control message by using the second cell, where the cell control message is sent by the base station to which the second cell belongs.

2 is a schematic flowchart of a method for controlling uplink carrier aggregation provided by the present invention. The method of Figure 2 is performed by a base station.

201. In the case that the receiving user equipment sends the uplink information by using the second cell, to the user. The device sends a cell control message, where the cell control message is used to indicate that the uplink information is sent by using the first cell.

202. Receive the uplink information sent by the user equipment by using the first cell, where the first cell and the second cell are used for carrier aggregation.

Optionally, the uplink information sent by the user equipment by using the second cell or the first cell may include at least one or more of the following: SRS, DMRS, UCI transmitted on the PUCCH, uplink data sent on the PUSCH, and sent on the PUSCH. UCI and so on. The UCI includes at least one or more of the following: a HARQ acknowledgement (ACK) or a negative acknowledgement (NACK), and the CSL CSI includes at least one or more of the following: CQI, PMI, RL ΡΉ.

According to the method of FIG. 2, the base station can effectively control the user equipment to perform handover between the PCell and the SCell, avoiding excessive interruption time caused by frequent handover, and improving uplink throughput.

Alternatively, the SCell can be activated/deactivated. The PCell can be always active, cannot be activated and deactivated, or the PCell's upstream can be activated and deactivated. For the SCell that can be activated and deactivated, the user equipment does not monitor the PDCCH on the deactivated SCell, does not receive downlink data on the PDSCH, and does not send data or signaling on the PUSCH, and sends uplink signaling of the SCell in the PUCCH of the PCell. For example, CSI does not send SRS of SCell. The CSI information is at least one or more of the following: including CQI, PMI, RL ΡΉ. The user equipment can send the above various uplink information and monitor the PDCCH, receive the downlink information, and send the uplink signaling of the SCell in the PUCCH of the PCell on the activated SCell.

Optionally, as an embodiment, in a case that the PCell is always in an active state and the first cell is an SCell, if the first cell is not activated, the user equipment needs to receive an activation indication sent by the base station, according to the activation indication. The first cell is activated, wherein the activation indication may be a MAC CE for activation/deactivation. The present invention does not limit the order in which the user equipment receives the cell control message or the activation indication. Generally, the user equipment receives the activation indication before receiving the cell control message. After the SCell is activated, the user equipment may use the SCell to receive downlink information, and after receiving the cell control message, the user equipment may use the cell control message according to the cell control message. The SCell sends uplink information. When the user equipment receives the cell control message and the activation indication at the same time, the user equipment first activates the first cell, and sends uplink information according to the cell indicated by the cell control message. User When the device receives the cell control message and receives the activation indication, the user equipment also needs to send the uplink information by using the first cell after receiving the activation indication.

Optionally, as an embodiment, the cell control message may be a MAC CE used to indicate that the uplink information is sent by using the first cell, and the cell control message may also be an uplink grant. For example, in the case where the PCell is always active, the cell control message may be the MAC CE or the uplink grant.

Optionally, as an embodiment, the cell control message may be a MAC CE, where the MAC CE is used to indicate that the uplink information is sent by using the first cell, and is used to activate the uplink of the first cell and deactivate the uplink of the second cell. For example, in the case that the uplink of the PCell can be activated and deactivated, the cell control message can be used to indicate that the uplink information is sent by using the first cell, and can also be used to enable the user equipment to activate the uplink of the first cell, and deactivate. The uplink of the second cell. If the user equipment receives the cell control message, the user equipment activates the uplink of the first cell according to the cell control message, and uses the first cell to send uplink information, deactivates the uplink of the second cell, and does not use the second cell to send uplink information. . The above PCell may be the first cell or the second cell. Optionally, in a case where the first cell is a SCell, the cell control message may be used to activate a downlink of the first cell. The cell control message can activate/deactivate the SCell uplink and downlink separately, so that the SCell can be used more flexibly. For example, if the downlink traffic is higher than the preset threshold, the downlink of the SCell may be activated; if the downlink traffic is lower than the preset threshold, the downlink of the SCell may be deactivated.

Optionally, as an embodiment, if the base station is performing a random access procedure with the user equipment in the second cell, stopping the ongoing random access procedure, and initiating a random access procedure in the first cell.

Optionally, in the case of the non-contention based random access procedure, the base station sends a PDCCH order for triggering the random access procedure to the user equipment.

Optionally, in a case that the user equipment MAC layer triggers a random access procedure, the base station receives the random access preamble sent by the user equipment in the first cell and performs a random access procedure in the first cell.

Optionally, as an embodiment, the HARQ feedback information or the scheduling request information sent by the user equipment in the second cell is received, where the HARQ feedback information or the scheduling request information is the HARQ that the user equipment receives the cell control message and is to be sent. Sent in the case of feedback information or scheduling request information. Receiving, by using the first subframe after the user equipment uses the HARQ feedback information sent by the second cell or the scheduling request information, receiving the user equipment to use the first cell The uplink information sent. After the second cell sends the HARQ feedback information to the first cell, the user equipment may perform the downlink HARQ transmission result in the second cell to perform corresponding processing, where the HARQ feedback information includes the ACK feedback information and the NACK. Feedback. For example, when receiving the ACK feedback information, the base station may determine that the corresponding TB has been successfully sent. If the base station receives the NACK feedback information, the base station may determine that the corresponding TB transmission fails, so that the base station may directly Transmit high-level data contained in the TB, such as a radio link control protocol data unit.

Optionally, as an embodiment, receiving HARQ feedback information or scheduling request information sent by the user equipment in the second cell, where the HARQ feedback information or scheduling request information is on a subframe where the user equipment successfully decodes the cell control message. Sent in the case of HARQ feedback information or scheduling request information to be transmitted. It takes a certain processing time for the user equipment to receive and decode the downlink message. Only after successfully decoding the downlink message can the downlink message be determined as the cell control message and whether there is uplink HARQ feedback information or scheduling request to be sent. After receiving the HARQ feedback information or the scheduling request information sent by the second cell, the user equipment receives the uplink information sent by the user equipment by using the first cell.

Optionally, the first cell and the second cell may be cells belonging to the base station, or one of the first cell and the second cell is a cell that does not belong to the base station.

Optionally, in a case where the first cell and the second cell belong to different base stations, the base station that performs all the steps in FIG. 2 may be the base station to which the first cell belongs, or may be the base station to which the second cell belongs. Optionally, the base station to which the first cell belongs may send the cell control message to the base station to which the second cell belongs, and the base station to which the second cell belongs performs all the steps in FIG. 2. Alternatively, the base station to which the second cell belongs may send the cell control message to the base station to which the first cell belongs, and the base station to which the first cell belongs performs all the steps in FIG. 2.

Optionally, as an embodiment, the base station may determine, according to the scheduling decision, the timing of sending the cell control message, for example, dynamically determining the timing of sending the cell control message according to the uplink radio condition, interference, load, and the like of the cell, and may also The cell control message is sent periodically.

FIG. 3 is a schematic flowchart of a method for controlling uplink carrier aggregation provided by the present invention, which is a specific description of the foregoing method embodiments.

In the default state, the user equipment uses the PCell communication of the base station and the SCell of the base station is in an unconfigured state. Therefore, if the SCell of the base station is not configured, the SCell needs to be performed in steps 301 and 302. 301. The base station sends a radio resource connection reconfiguration message to the user equipment, and configures the SCell for the user equipment.

302. If the SCell is successfully configured, the user equipment sends a radio resource connection reconfiguration complete message to the base station.

In the default state, the PCell of the base station is active and the SCell is inactive. Therefore, step 303 is required to activate the SCell to use SCell communication.

303. The user equipment receives an activation indication sent by the base station, and activates the SCell. Wherein, the activation indication is MAC CE.

In the case that the second cell is used to send the uplink information, the user equipment receives the cell control message sent by the base station, where the cell control message is used to indicate that the uplink information is sent by using the first cell.

305. The user equipment sends the uplink information by using the first cell according to the cell control message, and the user equipment stops using the second cell to send the uplink information. The first cell and the second cell are used for carrier aggregation. The first cell may be a PCell or a SCell. In the case where the first cell is a PCell, the second cell is a SCell; in the case where the first cell is a SCell, the second cell is a PCell.

Optionally, the uplink information sent by the user equipment by using the second cell or the first cell may include at least one or more of the following: SRS, DMRS, UCI transmitted on the PUCCH, uplink data sent on the PUSCH, and sent on the PUSCH. UCI. The UCI includes at least one or more of the following: a HARQ acknowledgement message (ACK), a negative acknowledgement (NACK), a CSI, and the like. The CSI includes at least one or more of the following: CQI, PMI, RI, ΡΉ.

Alternatively, as an embodiment, the SCell can be activated and deactivated, and the PCell is always active and cannot be activated and deactivated. In this case, the cell control message may be a MAC CE, and the cell control message is as shown in Figure 4a. In the case that the second cell is used to send the uplink information, if the first cell is the SCell and is in the active state, the user equipment may use the first cell to receive the downlink information, but may not use the first cell to send the uplink information. When the cell control message is received, the first cell is used to send uplink information, and the second cell is used to stop transmitting uplink information. Alternatively, when the second cell sends the uplink information, if the first cell is a PCell, the user equipment may use the first cell to receive downlink information, but may not use the first cell to send uplink information. When the cell control message is received, the first cell is used to send uplink information, and the second cell is used to send uplink information, monitor the PDCCH, and receive the downlink message.

Optionally, as an embodiment, the SCell can be activated and deactivated, and the PCell is always activated. Live state, cannot be activated and deactivated. In this case, the cell control message may be an uplink grant. Specifically, when the first cell is in an active state and the first cell is an SCell, the user equipment receives the PDCCH of the first cell or the scheduling cell of the first cell when the cross scheduling is configured. The uplink grant that is sent by the PDCCH, where the first cell is a PCell, the first cell can only be scheduled by its own PDCCH; in the case that the first cell is an SCell, the first cell can be used by the first cell Or PDCCH scheduling of the second cell. The user equipment sends the uplink information by using the first cell according to the cell control message, and stops using the second cell to send the uplink information. Alternatively, the user equipment, when the first cell is a PCell, receives the uplink grant sent by the base station by using the PDCCH of the first cell. The user equipment sends the uplink information by using the first cell according to the cell control message, and stops using the second cell to send the uplink information.

Optionally, as an embodiment, the uplink of the SCell can be activated and deactivated, and the uplink of the PCell can be activated and deactivated. In this case, the cell control message may be a MAC CE, and the cell control message is as shown in Figure 4d. The cell control message may also be used to activate the uplink of the first cell to deactivate the uplink of the second cell. Specifically, if the user equipment receives the cell control message, the user equipment activates the uplink of the first cell and uses the first cell to send uplink information, deactivates the uplink of the second cell, and stops using the second cell to send uplink information. Thus, since the cell control message can be used to activate the uplink of the first cell to deactivate the uplink of the second cell, step 303 need not be performed in this case. Optionally, if the first cell is a SCell, the cell control message may be used to activate the downlink of the first cell.

Optionally, as an embodiment, the user equipment clears the HARQ buffer corresponding to each uplink HARQ process on the HARQ entity of the second cell, when the cell control message is received.

Optionally, in the case of the non-contention based random access procedure, the user equipment receives, in the first cell, a PDCCH order (order) sent by the base station to trigger a random access procedure.

Optionally, in the case that the user equipment is in a random access procedure triggered by the MAC layer, the MAC layer of the user equipment selects a random access resource of the first cell and instructs the physical layer to send a random access preamble (preamble). A cell performs a random access procedure.

Optionally, as an embodiment, if the user equipment receives the cell control message, And the HARQ feedback information or the scheduling request information to be sent, the user equipment sends the HARQ feedback information or the scheduling request information by using a component carrier of the second cell. The user equipment sends the uplink information by using the component carrier of the first cell in the next subframe after the second cell sends the HARQ feedback information or the scheduling request information, and stops using the component carrier of the second cell to send the uplink information.

Optionally, as an embodiment, if the user equipment has uplink HARQ feedback information or scheduling request information to be sent on the subframe in which the cell control message is successfully decoded, the user equipment sends the HARQ feedback information or the scheduling request information. The user equipment sends the uplink information in the next subframe after the second cell sends the HARQ feedback information or the scheduling request information, and stops using the second cell to send the uplink information.

Optionally, the first cell and the second cell may be cells belonging to the base station, or one of the first cell and the second cell is a cell that does not belong to the base station. In the case that one of the first cell and the second cell does not belong to the cell of the base station, the user equipment may receive the cell control message by using the first cell, where the cell control message is sent by the base station to which the first cell belongs. Alternatively, the user equipment may further receive the cell control message by using the second cell, where the cell control message is sent by the base station to which the second cell belongs.

4a is a schematic diagram of a format of a cell control message MAC CE. The MAC CE of Figure 4a includes a byte of MAC subheader (sub-header) and a byte of MAC CE payload. "R" in the MAC subheader indicates a reserved field; "E" indicates an extension field indicating whether there is a subsequent MAC subheader and a corresponding Medium Access Control Service Data Unit (MAC SDU). The LCID is a Logical Channel ID, which is used to indicate the type of the MAC CE. Oct means eight bits ( Octet ).

4b is a schematic diagram of a type of static charge of a cell control message, and the type of static load of FIG. 4b is a schematic diagram of a type of static charge of the cell control message shown in FIG. 4a. As shown in FIG. 4b, "R" indicates reservation. Fields; "C." and "d" indicate PCell and 1 SCell. Take 1 to indicate that the corresponding serving cell is used to send uplink information, and 0 to indicate that the corresponding serving cell is not used to send uplink information. For example C. Take 1 to send uplink information using PCell. Oct means eight bits ( Octet ).

4c is a schematic diagram of another type of static charge of a cell control message, and FIG. 4c is a small diagram shown in FIG. 4a. A schematic diagram of another type of static charge of the zone control message. As shown in FIG. 4c, "C ₀ " to " C ₇ " represent PCell and 7 SCells, and 1 means that the uplink information is sent by using the corresponding serving cell, and 0 means no. The uplink information is sent by using the corresponding serving cell. For example, in the case of indicating that the uplink information is transmitted using the PCell, C. Take 1 , CC ₇ Mo Oct means eight bits ( Octet ).

Figure 4d is a schematic diagram of another format of a cell control message. The MAC CE of Figure 4d includes a byte of MAC header and a byte of MAC CE payload. "A, B" in the MAC subheader indicates uplink and/or downlink, for example, 00 indicates downlink and uplink, 01 indicates downlink, and 10 indicates uplink; "E" is an extended field indicating whether there is a subsequent MAC sub- Head and corresponding Media Access Control Service Data Unit (MAC SDU). The LCID is a Logical Channel ID, which is used to indicate the type of the MAC CE. Oct is an octet ( Octet ).

4e is a schematic diagram of a type of static charge of a cell control message, and FIG. 4e is a schematic diagram of a type of static charge of the cell control message shown in FIG. 4d. As shown in FIG. 4e, "C ₀ " to " C ₇ " represents PCell and 7 SCells, and 1 means that the uplink component carrier and/or the downlink component carrier of the corresponding serving cell are activated, and the 0 flag is used to deactivate the downlink of the corresponding serving cell. The component carrier and/or the uplink component carrier, wherein the downlink component carrier of the PCell cannot be deactivated.

FIG. 5 is a schematic flowchart of a method for controlling uplink carrier aggregation provided by the present invention. The method of Figure 5 is performed by a user equipment. The base station may configure, by using a Radio Resource Control (RRC) message, a subframe used by the user equipment to send uplink information in the first cell and the second cell.

501. Determine a first type of subframe and a second type of subframe on the frame structure.

Optionally, the user equipment obtains the subframe mode configuration information that is sent by the base station by using the RRC message, where the subframe mode configuration information is used to indicate the subframe used by the user equipment to send the uplink information in the first cell and the second cell. The user equipment determines the first type of subframe and the second type of subframe on the frame structure according to the subframe mode configuration information.

502. In the first type of subframe, use the first cell to send uplink information, and stop using the second cell to send uplink information.

503. In the second type of subframe, use the second cell to send uplink information, and stop using the first cell to send uplink information.

Optionally, step 504 and step 505 are further included, where step 504 can be performed simultaneously with step 501 or after step 501.

504. Determine a transition point on a frame structure, where the transition point isolates the first type of subframe from the second type of subframe. Optionally, the user equipment determines, according to the subframe mode configuration information sent by the base station, a transition point on the frame structure.

Optionally, the transition point may be N subframes, N slots, or N orthogonal frequency division multiplex (OFDM) symbols, where N is a positive integer greater than or equal to 1. In the case that the transition point is N subframes, the N subframes may be the last N subframes in the first type of subframe, or may be the first N subframes in the second type of subframe. In the case that the transition point is N time slots, the N time slots may be the last N time slots of the first type of subframe, and may also be the first N time slots of the second type of subframe. In the case that the conversion point is N OFDM symbols, the N OFDM symbols may be the last N OFDM symbols of the first type of subframe, and may also be the first N OFDM symbols of the second type of subframe.

505, at the transition point, stop sending uplink information.

It should be noted that 502, 503, and 505 are only used to indicate that the user equipment uses different subframes, and are not limited to the sequence of steps. The user equipment selects different cells according to the type of the subframe to send uplink information.

According to the method of FIG. 5, the user equipment can effectively perform handover in the first cell and the second cell, avoiding time interruption caused by frequent handover, and improving uplink throughput.

6 is a schematic diagram of partitioning of a first type of subframe, a second type of subframe, and a transition point. The division of the first type of subframe, the second type of subframe, and the transition point of Fig. 6 is divided according to the method of Fig. 5. As shown in FIG. 6, "F" represents the first type of subframe, "S" represents the second type of subframe, and "T" represents the transition point. It should be noted that the "F", "S", and "T" in Fig. 6 only indicate the types of different subframes or transition points, and do not indicate the number of subframes or transition points. For example, there may be two subframes as the first type of subframe, four subframes as the second type of subframe, and one transition point, and the transition point may be one subframe, or may be the first type of subframe and the second type. One time slot in the subframe may also be one OFDM symbol in the first type of subframe or the second type of subframe; or, there may be 16 subframes as the first type of subframe, and 22 subframes as the second type of subframe. Frame, 1 transition point, the transition point may be 1 subframe, or 1 slot in the first type of subframe and the second type of subframe, or may be the first type of subframe or the second type of subframe 1 OFDM symbol in the frame. The number of the above subframes is only an example, and the present invention does not limit the number of subframes or transition points in the first type of subframe and the second type of subframe and the conversion point.

7 is a schematic block diagram of a user equipment provided by the present invention. The user device 700 of FIG. 7 can perform the steps performed by the user equipment of FIGS. 1 and 3. The user equipment 700 includes: a receiving unit 701 and a sending unit 702. The receiving unit 701 is configured to receive a cell control message sent by the base station, where the cell control message is used to indicate that the uplink information is sent by using the first cell.

The sending unit 702 is configured to use the first cell to send the uplink information according to the cell control message, and stop using the second cell to send the uplink information, where the first cell and the second cell are used for carrier aggregation.

The user equipment 700 of FIG. 7 receives the control of the base station, and can effectively switch between the PCell and the SCell, avoiding excessive interruption time caused by frequent handover, and improving uplink throughput.

FIG. 8 is a schematic block diagram of another user equipment provided by the present invention. User device 800 of Figure 8 is one embodiment of user device 700 of Figure 7. The user equipment 800 includes: a receiving unit 801, a transmitting unit 802, a first control unit 803, a second control unit 804, a third control unit 805, and a fourth control unit 806.

The receiving unit 801 is configured to receive a cell control message sent by the base station, where the cell control message is used to indicate that the uplink information is sent by using the first cell.

The sending unit 802 is configured to use the first cell to send the uplink information according to the cell control message, and stop using the second cell to send the uplink information, where the first cell and the second cell are used for carrier aggregation.

Optionally, the uplink information sent by the sending unit 802 by using the second cell or the first cell includes one or more of the following: SRS, DMRS, UCI transmitted on the PUCCH, uplink data sent on the PUSCH, and UCI sent on the PUSCH. Information, etc. The UCI includes a HARQ acknowledgement (ACK) or a negative acknowledgement (NACK), CSI, and the like. The CSI includes at least one or more of the following: CQI, PMI, RL ΡΉ.

Optionally, as an embodiment, the activation indication may be a MAC CE for activation/deactivation, and the cell control message may be a MAC CE or an uplink authorization for indicating that the uplink information is sent by using the first cell. For example, in a case where the SCell can be activated and deactivated, and the PCell is always in an active state and cannot be activated and deactivated, the receiving unit 801 is further configured to receive an activation indication, which may be used for activation/deactivation. The MAC CE, the cell control message may be a MAC CE or an uplink grant for indicating that the uplink information is sent by using the first cell. Specifically, in a case where the first cell is an SCell, the sending unit 802 receives the activation indication sent by the base station before the first cell sends the uplink information, and the first control unit 803 activates the first one according to the activation indication. 』, the area, so that the sending unit 802 uses the first '』, the area to send uplink information and monitor the PDCCH, receive the downlink message. Or, in the case that the second cell is an SCell, the sending unit 802: Before using the first cell to send the uplink information, the receiving unit 801 receives the activation indication sent by the base station, and the first control unit 803 deactivates the second cell according to the activation indication, so that the sending unit 802 stops using the second cell to send the uplink information.

Optionally, as an embodiment, the cell control message may be a MAC CE, where the cell control message is used to indicate that the first cell is used to send uplink information, where the cell control message is further used to activate the uplink of the first cell, to deactivate the Upstream of the second cell. For example, in the case that the uplink of the SCell can be activated and deactivated and the uplink of the PCell can be activated and deactivated, the cell control message is further used to activate the uplink of the first cell to deactivate the uplink of the second cell. The cell control message can be a MAC CE. In this case, the first control unit 803 is configured to activate the uplink of the first cell according to the cell control message, and the sending unit 802 sends the uplink using the first cell if the first control unit 803 activates the uplink of the first cell. Uplink information. The first control unit 803 is further configured to: according to the cell control message, deactivate the uplink of the second cell, where the sending unit 802 stops using the second cell to send the uplink information, if the first control unit deactivates the uplink of the second cell. . Optionally, in a case that the first cell is a SCell, the cell control message may be used to activate the downlink of the first cell. In this case, the first control unit 803 is further configured to activate the downlink of the first cell according to the cell control message. The receiving unit 801 is further configured to receive downlink information by using the first cell.

The second control unit 804 is configured to clear the HARQ buffer corresponding to each uplink HARQ process on the HARQ entity of the second cell.

The third control unit 805 is configured to stop the random access procedure being performed by the second cell, and initiate a random access procedure on the first cell.

Optionally, in the case of the non-contention based random access procedure, the receiving unit 801 is further configured to receive, in the first cell, a PDCCH order (order) sent by the base station to trigger a random access procedure.

Optionally, in the case of a MAC-triggered random access procedure, the third control unit 805 is further configured to determine a random access resource at the MAC layer. The sending unit 802 is further configured to send a random access preamble to perform a random access procedure.

The sending unit 802 is specifically configured to use the second cell to send the HARQ feedback information or the scheduling request information if the receiving unit 801 receives the cell control message and has HARQ feedback information or scheduling request information to be sent.

The sending unit 802 is specifically configured to use the first cell to send uplink information and stop using the second small frame after using the second cell to send the HARQ feedback information or the scheduling request information. The area sends uplink information.

The fourth control unit 806 is configured to decode the cell control message.

The sending unit 802 is specifically configured to: when the fourth control unit 806 successfully decodes the HARQ feedback information or the scheduling request information to be sent in the subframe where the cell control message is located, use the second cell to send the HARQ feedback information or the scheduling Request information.

Optionally, the receiving unit 801 may receive the cell control message by using the first cell, or may receive the cell control message by using the second cell.

The user equipment 800 of FIG. 8 receives the control of the base station, and can effectively switch between the PCell and the SCell, avoiding excessive interruption time caused by frequent handover, and improving uplink throughput.

9 is a schematic block diagram of a base station provided by the present invention. The base station 900 shown in FIG. 9 can execute the map.

2 and the steps performed by the base station in FIG. The base station 900 includes: a transmitting unit 901 and a receiving unit 902.

The sending unit 901 is configured to send a cell control message to the user equipment, where the cell control message is used to indicate that the uplink information is sent by using the first cell.

The receiving unit 902 is configured to receive uplink information sent by the user equipment by using the first cell, where the first cell and the second cell are used for carrier aggregation.

The base station 900 of FIG. 9 can effectively control the user equipment to perform handover between the PCell and the SCell, avoiding excessive interruption time caused by frequent handover, and improving uplink throughput.

FIG. 10 is a schematic block diagram of another base station provided by the present invention. Base station 1000 of Figure 10 is one embodiment of base station 900 of Figure 9. The base station 1000 includes: a transmitting unit 1001, a receiving unit 1002, and a control unit 1003.

The sending unit 1001 is configured to send a cell control message to the user equipment, where the cell control message is used to indicate that the uplink information is sent by using the first cell.

The receiving unit 1002 is configured to receive uplink information sent by the user equipment by using the first cell, where the first cell and the second cell are used for carrier aggregation.

Optionally, the cell control message is further used to enable the user equipment to activate an uplink of the first cell to activate an uplink of the second cell.

The control unit 1003 is configured to stop the random access procedure being performed by the second cell, and perform a random access procedure in the first cell.

Optionally, in the case of the non-contention based random access procedure, the sending unit 1001 is further configured to send a PDCCH order (order) for triggering the random access procedure to the user equipment.

Optionally, in the case that the user equipment MAC layer triggers a random access procedure, the receiving unit 1002. The method further includes receiving a random access preamble sent by the user equipment. The control unit 1003 is configured to perform a random access procedure in the first cell according to the random access preamble.

Optionally, as an embodiment, the receiving unit 1002 is specifically configured to receive, by the user equipment, the second cell to send the HARQ feedback information or the scheduling request information, where the HARQ feedback information or the scheduling request information is that the user equipment receives the The cell control message is sent in the case of HARQ feedback information or scheduling request information to be transmitted. The receiving unit 1002 is configured to: receive, in the next subframe after the user equipment sends the HARQ feedback information or the scheduling request information by using the second cell, the uplink information sent by the user equipment by using the first cell.

Optionally, as an embodiment, the receiving unit 1002 is specifically configured to receive, by the user equipment, the second cell to send the HARQ feedback information or the scheduling request information, where the HARQ feedback information or the scheduling request information is that the user equipment is successfully demodulated. The case where the cell control message has the HARQ feedback information or the scheduling request information to be sent on the subframe in which the message is located is sent.

Optionally, the first cell and the second cell may be cells belonging to the base station 1000. Or one of the first cell and the second cell is a cell that does not belong to the base station 1000.

Optionally, in a case where one of the first cell and the second cell is a cell that does not belong to the base station 1000, the base station 1000 may be a base station to which the first cell belongs, or may be a base station to which the second cell belongs. Optionally, in a case where the base station 1000 is a base station to which the first cell belongs, the receiving unit 1002 is further configured to receive a cell control message sent by the base station to which the second cell belongs. In the case that the base station 1000 is the base station to which the second cell belongs, the receiving unit 1002 may be further configured to receive a cell control message sent by the base station to which the first cell belongs.

Optionally, the sending unit 1001 may determine, according to the scheduling decision, a timing of sending the cell control message, for example, dynamically determining a timing of sending the cell control message according to an uplink radio condition, an interference, a load, and the like of the cell. The sending unit 1001 may also periodically send the cell control message.

The base station 1000 of FIG. 10 can effectively control the user equipment to perform handover between the PCell and the SCell, avoiding excessive interruption time caused by frequent handover, and improving uplink throughput.

11 is a schematic block diagram of a user equipment provided by the present invention. The user equipment 1100 shown in FIG. 11 can perform the various steps performed by the user equipment in FIG. The user equipment 1100 includes: a control unit 1101 and a transmitting unit 1102.

The control unit 1101 is configured to determine a first type of subframe and a second type of subframe on the frame structure.

The sending unit 1102 is configured to send, by using the first cell, uplink information, and stop using the second cell to send the uplink information, in the first type of subframe. The sending unit 1102 is further configured to: use the second cell to send uplink information, and stop using the first cell to send the uplink information, in the second type of subframe.

The user equipment 1100 of FIG. 11 can effectively perform handover in the first cell and the second cell, avoiding time interruption caused by frequent handover, and improving uplink throughput.

Optionally, the control unit 1101 is further configured to determine a transition point on the frame structure, where the transition point isolates the first type of subframe from the second type of subframe.

Optionally, the control unit 1101 is further configured to control to stop sending uplink information at the switching point. Optionally, the present invention provides a user equipment, which can perform various steps performed by the user equipment in FIG. 1 or FIG. The user equipment includes: a receiver, a transmitter, and a processor.

The receiver is configured to receive a cell control message sent by the base station, where the cell control message is used to indicate that the uplink information is sent by using the first cell.

The transmitter is configured to send the uplink information by using the first cell according to the cell control message, and stop using the second cell to send the uplink information, where the first cell and the second cell are used for carrier aggregation.

Optionally, the uplink information sent by the second cell or the first cell by the sending device includes one or more of the following: SRS, DMRS, UCI sent on the PUCCH, uplink data sent on the PUSCH, and UCI information sent on the PUSCH. Wait. The UCI includes a HARQ acknowledgement (ACK) or a negative acknowledgement (NACK), CSI, and the like. The CSI includes at least one or more of the following: CQI, PMI, RL ΡΉ.

Alternatively, as an embodiment, the SCell can be activated and deactivated, and the PCell is always active and cannot be activated and deactivated. In this case, the receiver is further configured to receive an activation indication, where the activation indication may be a MAC CE for activation/deactivation, where the cell control message is a MAC CE or an uplink for indicating that the uplink information is sent by using the first cell. Authorization. Specifically, in a case where the first cell is an SCell, the transmitter receives an activation indication sent by the base station before using the first cell to send the uplink information, and the processor activates the first cell according to the activation indication, so that the transmitter uses the transmitter. The first cell sends uplink information. Or, in a case where the second cell is an SCell, the receiver receives an activation indication sent by the base station before using the first cell to send the uplink information, and the processor deactivates the second cell according to the activation indication, so that the transmitter stops. The second cell is used to send uplink information.

Optionally, as an embodiment, the uplink of the SCell may be activated and deactivated, and the uplink of the PCell may be activated and deactivated. In this case, the cell control message is also used to activate the first The uplink of the cell, to activate the uplink of the second cell. The cell control message can be a MAC CE. In this case, the processor is configured to activate the uplink of the first cell according to the cell control message, and the transmitter uses the first cell to send the uplink information when the processor activates the uplink of the first cell. The processor is further configured to: according to the cell control message, deactivate the uplink of the second cell, where the transmitter stops using the second cell to send uplink information if the first control unit deactivates the uplink of the second cell.

The processor is configured to clear the HARQ buffer corresponding to each uplink HARQ process on the HARQ entity of the second cell.

And a processor, configured to stop a random access procedure being performed by the second cell, and initiate a random access procedure on the first cell.

Optionally, in the case of the non-contention based random access procedure, the receiver is further configured to receive, in the first cell, a PDCCH order (order) sent by the base station to trigger a random access procedure.

Optionally, in the case of a random access procedure triggered by the MAC layer, the processor is further configured to determine a random access resource at the MAC layer. The transmitter is also used to send a random access preamble (preamble) to perform a random access procedure.

The transmitter is specifically configured to use the second cell to send the HARQ feedback information or the scheduling request information if the receiver receives the cell control message and has HARQ feedback information or scheduling request information to be sent.

The transmitter is specifically configured to use the first cell to send uplink information and stop using the second cell to send uplink information in the next subframe after the second cell sends the HARQ feedback information or the scheduling request information.

a processor, configured to decode the cell control message.

The transmitter is specifically configured to use the second cell to send the HARQ feedback information or the scheduling request information if the processor successfully decodes the HARQ feedback information or the scheduling request information to be sent in the subframe where the cell control message is located.

Optionally, the receiver may use the first cell to receive the cell control message, or use the second cell to receive the cell control message.

Optionally, the present invention provides a base station. The base station can perform the various steps performed by the base station in Figures 2 and 3. The base station includes: a transmitter, a receiver, and a processor.

And a transmitter, configured to send a cell control message to the user equipment, where the cell control message is used to indicate a cell used by the user equipment to send uplink information. And a receiver, configured to receive uplink information sent by the user equipment by using the first cell, where the first cell and the second cell are used for carrier aggregation.

The processor is configured to stop the random access procedure being performed by the second cell, and perform a random access procedure in the first cell.

Optionally, in the case of the non-contention based random access procedure, the transmitter is further configured to send a PDCCH order (order) for triggering the random access procedure to the user equipment.

Optionally, in a case that the user equipment MAC layer triggers a random access procedure, the receiver is further configured to receive a random access preamble sent by the user equipment. And a processor, configured to perform a random access procedure in the first cell according to the random access preamble.

Optionally, as an embodiment, the receiver is specifically configured to receive, by the user equipment, the second cell to send the HARQ feedback information or the scheduling request information, where the HARQ feedback information or the scheduling request information is that the user equipment is receiving the cell. Transmitted if the message is controlled and there is HARQ feedback information or scheduling request information to be sent. The receiver is configured to receive the uplink information sent by the user equipment by using the first cell in the next subframe after the user equipment sends the HARQ feedback information or the scheduling request information by using the second cell.

Optionally, as an embodiment, the receiver is specifically configured to receive, by the user equipment, the second cell to send the HARQ feedback information or the scheduling request information, where the HARQ feedback information or the scheduling request information is that the user equipment successfully demodulates the The case where the subframe in which the cell control message is located has the HARQ feedback information or the scheduling request information to be sent.

Optionally, the first cell and the second cell may be cells belonging to the base station. Or one of the first cell and the second cell is a cell that does not belong to the base station.

Optionally, in a case that one of the first cell and the second cell is a cell that does not belong to the base station, the base station may be a base station to which the first cell belongs, or may be a base station to which the second cell belongs. Optionally, in a case that the base station is a base station to which the first cell belongs, the receiver may be further configured to receive a cell control message sent by the base station to which the second cell belongs. In the case that the base station is the base station to which the second cell belongs, the receiver may be further configured to receive the cell control message sent by the base station to which the first cell belongs.

Optionally, the sending device may determine, according to the scheduling decision, a timing of sending the cell control message, for example, dynamically determining, according to the uplink radio condition, interference, load, and the like of the cell, sending the cell control. The timing of the message. The transmitter may also periodically send the cell control message.

Optionally, the present invention provides a user equipment, which can perform various steps performed by the user equipment in FIG. The user equipment includes: a controller and a transmitter.

The controller is configured to determine the first type of subframe and the second type of subframe on the frame structure.

The transmitter is configured to send, by using the first cell, uplink information, and stop using the second cell to send the uplink information, in the first type of subframe.

The transmitter is further configured to use the second cell to send uplink information on the second type of subframe, and stop using the first cell to send the uplink information.

The controller is also used to determine a transition point on the frame structure.

The controller is further configured to control the transmitter to stop sending uplink information at the switching point.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in a combination of electronic hardware or computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

It will be apparent to those skilled in the art that, for the convenience of the description and the cleaning process, the specific operation of the system, the device and the unit described above may be referred to the corresponding processes in the foregoing method embodiments, and details are not described herein again.

In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.

The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated in one unit. In the unit.

The functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential to the prior art or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program code. .

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any change or replacement that can be easily conceived by those skilled in the art within the technical scope of the present invention is All modifications are intended to be included within the scope of the invention, and the scope of the invention should be determined by the scope of the appended claims.

Claims

Rights request

1. A method for controlling uplink carrier aggregation, characterized by including:

In the case of using the second cell to send uplink information, receive a cell control message sent by the base station, where the cell control message is used to indicate using the first cell to send uplink information;

According to the cell control message, use the first cell to send uplink information, and stop using the second cell to send uplink information, where the first cell and the second cell are used for carrier aggregation.

2. The method of claim 1, wherein the cell control message is a media access control unit (MAC CE) or an uplink authorization.

3. The method according to claim 1 or 2, characterized in that the method further includes: clearing the HARQ buffer corresponding to each uplink HARQ process on the hybrid automatic request retransmission HARQ entity of the second cell.

4. The method according to any one of claims 1 to 3, characterized in that the cell control message is also used to activate the uplink of the first cell and deactivate the uplink of the second cell;

The step of using the first cell to send the uplink information and stopping using the second cell to send the uplink information according to the cell control message includes:

According to the cell control message, activate the uplink of the first cell and use the first cell to send the uplink information, deactivate the uplink of the second cell and stop using the second cell to send the uplink information. .

5. The method according to any one of claims 1 to 3, characterized in that, according to the cell control message, using the first cell to send the uplink information, and stopping using the second cell to send all the uplink information. The above upstream information includes:

When the random access process is being performed in the second cell, stop the random access process in the second cell;

Initiate a random access procedure on the first cell.

6. The method according to any one of claims 1 to 3, characterized in that, according to the cell control message, using the first cell to send the uplink information, and stopping using the second cell to send all the uplink information. The above upstream information includes:

When the cell control message is received, and if there is HARQ feedback information or scheduling request information to be sent, using the second cell to send the HARQ feedback information or the scheduling request information; In the next subframe after using the second cell to send the HARQ feedback information or the scheduling request information, use the first cell to send the uplink information, and stop using the second cell to send the uplink information. .

7. The method of claim 6, wherein: when the cell control message is received and there is HARQ feedback information or scheduling request information to be sent, using the second cell to send the HARQ Feedback information or the scheduling request information includes:

If there is HARQ feedback information or scheduling request information to be sent on the subframe where the cell control message is successfully decoded, the second cell is used to send the HARQ feedback information or the scheduling request information.

8. A method for controlling uplink carrier aggregation, characterized by including:

When receiving that the user equipment uses the second cell to send uplink information, send a cell control message to the user equipment, where the cell control message is used to instruct the user equipment to use the first cell to send uplink information;

Receive uplink information sent by the user equipment using a first cell, where the first cell and the second cell are used for carrier aggregation, and the user equipment stops using the second cell to send uplink information.

9. The method of claim 8, wherein the cell control message is a media access control unit (MAC CE) or an uplink authorization.

10. The method according to claim 8 or 9, characterized in that the cell control message is also used to cause the user equipment to activate the uplink of the first cell and deactivate the uplink of the second cell.

11. The method according to any one of claims 8-10, wherein the receiving the uplink information sent by the user equipment using the first cell includes:

A random access process is performed in the first cell.

12. The method according to any one of claims 8-10, wherein the receiving the uplink information sent by the user equipment using the first cell includes:

Receive the user equipment using the second cell to send hybrid automatic request retransmission HARQ feedback information or scheduling request information, wherein the HARQ feedback information or the scheduling request information is when the user equipment receives the cell control message. when, and when the HARQ to be sent Sent in the context of feedback information or the scheduling request information;

In the next subframe after receiving the user equipment using the second cell to send the HARQ feedback information or the scheduling request information, receiving the uplink information sent by the user equipment using the first cell of the base station .

13. The method according to claims 8-10, wherein the receiving the uplink information sent by the user equipment using the first cell includes:

Receive the user equipment using the second cell to send hybrid automatic request retransmission HARQ feedback information or scheduling request information, wherein the HARQ feedback information or the scheduling request information is the result of the user equipment successfully decoding the cell control message. Sent when there is the HARQ feedback information or the scheduling request information to be sent on the subframe;

14. A method for controlling uplink carrier aggregation, characterized by including:

Determine the first type of subframe and the second type of subframe on the frame structure;

On the first type of subframe, use the first cell to send uplink information, and stop using the second cell to send the uplink information;

On the second type of subframe, use the second cell to send the uplink information, and stop using the first cell to send the uplink information;

Wherein, the first cell and the second cell are used for carrier aggregation.

15. The method of claim 14, wherein the method further includes: determining a conversion point on the frame structure, the conversion point isolating the first type of subframe and the second type of subframe;

At the switching point, the sending of the uplink information is stopped.

16. A user equipment, characterized by: including:

A receiving unit, configured to receive a cell control message sent by the base station, where the cell control message is used to instruct the first cell to send uplink information;

A sending unit, configured to use the first cell to send uplink information and stop using the second cell to send uplink information according to the cell control message, where the first cell and the second cell are used for carrier aggregation.

17. The user equipment according to claim 16, characterized in that, the cell control message It is also used to activate the uplink of the first cell and deactivate the uplink of the second cell; the user equipment also includes:

The first control unit is configured to activate the uplink of the first cell according to the cell control message so that the sending unit uses the first cell to send the uplink information, and deactivate the downlink of the second cell so that the The sending unit stops using the second cell to send the uplink information.

18. The user equipment according to claim 16 or 17, characterized in that the user equipment further includes:

The second control unit is configured to clear the HARQ buffer corresponding to each uplink HARQ process on the hybrid automatic retransmission HARQ entity of the second cell.

19. The user equipment according to any one of claims 16 to 18, characterized in that the user equipment further includes:

The third control unit is configured to stop the random access process being performed in the second cell, and initiate a random access process in the first cell.

20. The user equipment according to any one of claims 16-19, characterized in that,

The sending unit is specifically configured to use the second cell to send the HARQ feedback information when the receiving unit receives the cell control message and there is HARQ feedback information or scheduling request information to be sent. or the scheduling request information;

The sending unit is specifically configured to use the first cell to send the uplink information in the next subframe after using the second cell to send the HARQ feedback information or the scheduling request information, and stop using the The second cell sends the uplink information.

21. The user equipment according to claim 20, characterized in that the user equipment further includes:

The fourth control unit is used to decode the cell control message;

The sending unit is specifically configured to use the second cell to send the HARQ feedback information or the scheduling request information when there is HARQ feedback information or scheduling request information to be sent on the subframe where the cell control message is successfully decoded. Scheduling request information.

22. A base station, characterized by: including:

A sending unit, configured to send a cell control message to the user equipment, where the cell control message is used to instruct the user equipment to use the first cell to send uplink information;

A receiving unit configured to receive uplink information sent by the user equipment using a first cell, where the first cell and the second cell are used for carrier aggregation.

23. The base station according to claim 22, wherein the cell control message is also used to enable the user equipment to activate the uplink of the first cell and deactivate the uplink of the second cell.

24. The base station according to claim 22 or 23, characterized in that, the base station further includes: a control unit, configured to stop the random access process being performed in the second cell, and perform random access in the first cell. Access process.

25. The base station according to claim 22 or 23, characterized in that,

The receiving unit is specifically configured to receive hybrid automatic request retransmission HARQ feedback information or scheduling request information sent by the user equipment using the second cell, wherein the HARQ feedback information or the scheduling request information is the result of the user equipment. Sent after receiving the cell control message and the HARQ feedback information or the scheduling request information to be sent;

The receiving unit is specifically configured to, in the next subframe after receiving the user equipment use the second cell to send the HARQ feedback information or the scheduling request information, receive the user equipment use the first cell. The uplink information sent.

26. The method according to claim 22 or 23, characterized in that,

The receiving unit is specifically configured to receive hybrid automatic request retransmission HARQ feedback information or scheduling request information sent by the user equipment using the second cell, wherein the HARQ feedback information or the scheduling request information is the result of the user equipment. Sent when there is the HARQ feedback information or the scheduling request information to be sent on the subframe where the cell control message is successfully decoded;

27. A user equipment, characterized by: including:

A control unit, used to determine the first type of subframe and the second type of subframe on the frame structure;

A sending unit, configured to use the first cell to send uplink information on the first type of subframe, and stop using the second cell to send the uplink information;

The sending unit is further configured to use the second cell to send the uplink information on the second type of subframe, and stop using the first cell to send the uplink information, wherein the first cell and The second cell is used for carrier aggregation.

28. The user equipment according to claim 27, characterized in that,

The control unit is also used to determine the conversion point on the frame structure; The control unit is also configured to control to stop sending the uplink information at the conversion point.

29. A user equipment, characterized by: including:

A receiver, configured to receive a cell control message sent by the base station, where the cell control message is used to instruct the first cell to send uplink information;

The transmitter is configured to use the first cell to send uplink information and stop using the second cell to send uplink information according to the cell control message, where the first cell and the second cell are used for carrier aggregation.

30. The user equipment according to claim 29, wherein the cell control message is also used to activate the uplink of the first cell and deactivate the uplink of the second cell;

The user equipment also includes:

A processor configured to, according to the cell control message, activate the uplink of the first cell so that the sending unit uses the first cell to send the uplink information, and deactivate the downlink of the second cell so that the sending unit The unit stops using the second cell to send the uplink information.

31. The user equipment according to claim 29, characterized in that the user equipment further includes:

A processor, configured to clear the HARQ buffer corresponding to each uplink HARQ process on the hybrid automatic retransmission HARQ entity of the second cell.

32. The user equipment according to claim 29, characterized in that the user equipment further includes:

A processor, configured to stop the random access process being performed in the second cell, and initiate a random access process in the first cell.

33. The user equipment according to claim 29, characterized in that,

The transmitter is specifically configured to use the second cell to send the HARQ feedback information when the receiving unit receives the cell control message and there is HARQ feedback information or scheduling request information to be sent. or the scheduling request information;

The transmitter is specifically configured to use the first cell to send the uplink information in the next subframe after using the second cell to send the HARQ feedback information or the scheduling request information, and stop using the The second cell sends the uplink information.

34. The user equipment according to claim 33, characterized in that the user equipment further includes:

A processor configured to decode the cell control message; The transmitter is specifically configured to use the second cell to send the HARQ feedback information or the scheduling request information when there is HARQ feedback information or scheduling request information to be sent on the subframe where the cell control message is successfully decoded. Scheduling request information.

35. A base station, characterized by including:

A transmitter, configured to send a cell control message to the user equipment, where the cell control message is used to instruct the user equipment to use the first cell to send uplink information;

A receiver, configured to receive uplink information sent by the user equipment using a first cell, where the first cell and the second cell are used for carrier aggregation.

36. The base station according to claim 35, wherein the cell control message is also used to enable the user equipment to activate the uplink of the first cell and deactivate the uplink of the second cell.

37. The base station according to claim 35, characterized in that, the base station further includes: a processor, configured to stop the random access process being performed in the second cell, and perform random access in the first cell. process.

38. The base station according to claim 35 or 36, characterized in that,

The receiver is specifically configured to receive hybrid automatic request retransmission HARQ feedback information or scheduling request information sent by the user equipment using the second cell, wherein the HARQ feedback information or the scheduling request information is the user equipment. Sent after receiving the cell control message and the HARQ feedback information or the scheduling request information to be sent;

The receiver is specifically configured to, in the next subframe after receiving the user equipment send the HARQ feedback information or the scheduling request information using the second cell, receive the user equipment use the first cell. The uplink information sent.

39. The method according to claim 35 or 36, characterized in that,

The receiver is specifically configured to receive hybrid automatic request retransmission HARQ feedback information or scheduling request information sent by the user equipment using the second cell, wherein the HARQ feedback information or the scheduling request information is the user equipment. It is sent when the HARQ feedback information or the scheduling request information to be sent is successfully decoded on the subframe where the cell control message is located; the receiver is specifically configured to use the In the next subframe after the second cell sends the HARQ feedback information or the scheduling request information, the user equipment receives the uplink information sent by the first cell.

40. A user equipment, characterized by: including:

A processor, configured to determine the first type of subframe and the second type of subframe on the frame structure; The transmitter is configured to use the first cell to send uplink information on the first type of subframe, and stop using the second cell to send the uplink information;

The transmitter is further configured to use the second cell to send the uplink information on the second type of subframe, and stop using the first cell to send the uplink information, wherein the first cell and The second cell is used for carrier aggregation.

41. The user equipment according to claim 40, characterized in that,

The processor is also used to determine the conversion point on the frame structure;

The processor is also configured to control to stop sending the uplink information at the conversion point.