CN109417743B

CN109417743B - Dual connection method and device

Info

Publication number: CN109417743B
Application number: CN201680087546.2A
Authority: CN
Inventors: 彭文杰; 张宏卓
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-08-12
Filing date: 2016-08-12
Publication date: 2020-07-07
Anticipated expiration: 2036-08-12
Also published as: WO2018027987A1; CN109417743A

Abstract

The embodiment of the invention provides a double-connection method and a double-connection device. The method comprises the following steps: the method comprises the steps that a controller to be accessed configures parameters for user equipment, the parameters are sent to a base station, the base station sends a first connection reconfiguration message comprising the parameters to the user equipment after receiving the parameters, the user equipment receives the first connection reconfiguration message sent by the base station and establishes connection with the controller to be accessed according to the parameters, when the user equipment is accessed to a cell managed by the controller, the user equipment can be configured in advance according to the parameters in the first connection reconfiguration message, the user equipment is simultaneously accessed to a coverage area of the base station and a coverage area of the controller, so that the user equipment can conveniently interact with a core network through the base station, and the user equipment interacts with the core network through the base station and the controller, and therefore the throughput of the user equipment is improved.

Description

Dual connection method and device

Technical Field

The present invention relates to communications technologies, and in particular, to a dual connectivity method and apparatus.

Background

With the development of Long Term Evolution (Long Term Evolution, abbreviated as LTE) technology, no cell system appears. The No cell system comprises: a controller (controller) and a Transmission Point (TP). The coverage of multiple TPs constitutes a super cell. The controller manages the wireless resources of the hyper cell; the TP provides air interface resources for the user equipment. When the user equipment accesses to a hyper cell, the user equipment communicates with the core network through the TP and the controller.

When the ue moves to an area covered by both the LTE cell and the super cell during the moving process, the ue needs to connect to both the LTE cell and the super cell in order to improve the throughput of the ue. However, the prior art has not provided a solution for enabling a user equipment to simultaneously connect an LTE cell and a super cell.

Disclosure of Invention

The embodiment of the invention provides a dual connection method and a dual connection device, which are used for realizing that user equipment is simultaneously connected with an LTE (long term evolution) cell and a hyper cell and improving the throughput of the user equipment.

In a first aspect, an embodiment of the present application provides a dual connectivity method, including:

the base station receives parameters configured for the user equipment by the controller to be accessed from the controller to be accessed; the parameters comprise an access sequence, a channel for sending the access sequence, an uplink reference signal, a channel for sending the uplink reference signal, a period for sending the uplink reference signal and a special connection identifier DCID; the base station sends a first connection reconfiguration message to the user equipment, wherein the first connection reconfiguration message is used for indicating the user equipment to establish connection with the controller to be accessed according to the parameters; wherein, the first connection reconfiguration message comprises parameters, and the base station and the user equipment have established connection. The user equipment can obtain data from the base station and the controller at the same time, and the throughput of the UE is improved.

In one possible design, the base station is co-sited with the controller to be accessed; after the base station sends the first connection reconfiguration message to the user equipment, the method further includes: a base station receives a first measurement report from a sending point TP managed by a controller to be accessed; and the base station determines the TP to be connected in the TPs according to the first measurement report. The TP to be connected may be selected based on the first measurement report, ensuring that the most suitable TP is selected for the user terminal.

In one possible design, after the base station determines TPs to be connected among the TPs according to the first measurement report, the method further includes: a base station sends a first increase request message to a TP to be connected; the first addition request message is used for indicating that a tunnel is established for a bearer of the user equipment between the base station and the TP to be connected; the base station receives a first increase request confirmation message sent by the TP to be connected according to the first increase request message from the TP to be connected; and the base station sends a second connection reconfiguration message to the user equipment, wherein the second connection reconfiguration message is used for indicating the user equipment to simultaneously carry out data transmission with the base station and the TP to be connected. The method and the device realize that the user equipment is accessed to the cell managed by the controller to be accessed through the TP to be connected, so that the user equipment is convenient to interact with the core network through the base station, and the user equipment interacts with the core network through the base station and the controller, thereby improving the throughput of the user equipment.

In one possible design, the first connection reconfiguration message is further used to instruct the ue to perform data transmission with the base station and the TP to be connected managed by the controller to be accessed at the same time; before the base station receives the parameters configured for the user equipment by the controller to be accessed from the controller to be accessed, the method further comprises the following steps: the base station sends a second increase request message to the controller to be accessed; the second addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and indicating that a tunnel is established for the bearer of the user equipment between the base station and the controller to be accessed; the base station receiving the parameters configured for the user equipment by the controller to be accessed from the controller to be accessed comprises the following steps: the base station receives a second increase request confirmation message sent by the controller to be accessed according to the second increase request message from the controller to be accessed; wherein the second addition request acknowledgement message includes a parameter. On one hand, the first connection reconfiguration message has two functions, and signaling flow is saved, on the other hand, when the user equipment is accessed to the cell managed by the controller, the access sequence can be simultaneously used for random access and the TP determines a second measurement report according to the access sequence, and the signaling flow is also saved, so that the efficiency of double connection is improved.

In one possible design, before the base station receives, from the controller to be accessed, the parameter configured for the user equipment by the controller to be accessed, the method further includes: the base station sends a third increase request message to the controller to be accessed; the third addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and indicating that a tunnel is established for the bearer of the user equipment between the base station and the controller to be accessed; the base station receiving the parameters configured for the user equipment by the controller to be accessed from the controller to be accessed comprises the following steps: the base station receives a third increase request confirmation message sent by the controller to be accessed according to the third increase request message from the controller to be accessed; wherein the third addition request acknowledgement message includes a parameter; after the base station sends the first connection reconfiguration message to the user equipment, the method further includes: the base station receives a fourth increase request message from the TP to be connected managed by the controller to be accessed; the fourth addition request message is used for indicating that a tunnel is established for the bearer of the user equipment between the base station and the TP to be connected; and the base station sends a third connection reconfiguration message to the user equipment, wherein the third connection reconfiguration message is used for indicating the user equipment to simultaneously carry out data transmission with the base station and the TP to be connected. Therefore, after the user equipment realizes dual connection and when data downlink transmission exists, the base station can directly send a part of data to the user equipment, send the other part of data to the TP to be connected, and then send the TP to be connected to the user equipment, and a controller is not needed, so that network resources are saved, and the throughput of the user equipment is further improved.

In one possible design, before the base station receives, from the controller to be accessed, the parameter configured for the user equipment by the controller to be accessed, the method further includes: the base station sends a third increase request message to the controller to be accessed; the third addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and indicating that a tunnel is established for the bearer of the user equipment between the base station and the controller to be accessed; the base station receiving the parameters configured for the user equipment by the controller to be accessed from the controller to be accessed comprises the following steps: the base station receives a third increase request confirmation message sent by the controller to be accessed according to the third increase request message from the controller to be accessed; wherein the third addition request acknowledgement message includes a parameter; after the base station sends the first connection reconfiguration message to the user equipment, the method further includes: the base station receives indication information from a controller to be accessed; the base station determines the TP to be connected managed by the controller to be accessed according to the indication information; the indication information comprises identification of candidate TPs, and the candidate TPs are determined by a controller to be accessed; the base station sends a fourth increase request message to the TP to be connected; the fourth addition request message is used for indicating that a tunnel is established for the bearer of the user equipment between the base station and the TP to be connected; the base station receives a fourth increase request confirmation message sent by the TP to be connected according to the fourth increase request message from the TP to be connected; the base station sends a third connection reconfiguration message to the user equipment; and the third connection reconfiguration message is used for instructing the user equipment to perform data transmission with the base station and the TP to be connected at the same time. After the user equipment realizes dual connection, when data downlink transmission exists, the base station can directly send a part of data to the user equipment, send the other part of data to the TP to be connected, and then send the data to the user equipment by the TP to be connected without passing through a controller, thereby saving network resources and further improving the throughput of the user equipment.

In a second aspect, an embodiment of the present invention provides a dual connectivity method, including:

the controller configures parameters for the user equipment; the parameters comprise an access sequence, a channel for sending the access sequence, an uplink reference signal, a channel for sending the uplink reference signal, a period for sending the uplink reference signal and a special connection identifier (DCID); the controller sends the parameters to a base station; the controller is a controller to be accessed by the user equipment, and the user equipment and the base station are connected.

In one possible design, the first connection reconfiguration message is further used to instruct the ue to perform data transmission with the TP to be connected managed by the base station and the controller to be accessed at the same time; before the controller configures parameters for the user equipment, the method further includes: the controller receiving a second addition request message from the base station; the second addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and indicating that a tunnel is established between the base station and the controller to be accessed to the bearer of the user equipment; the controller sends the parameters to a base station, and the method comprises the following steps: the controller sends a second increase request confirmation message to the base station according to the second increase request message; wherein the second addition request acknowledgement message includes the parameter.

In one possible design, after the controller sends a second addition request acknowledge message to the base station according to the second addition request message, the method further includes: the controller receives a second measurement report from the TP managed by the controller and determines a TP to be connected according to the second measurement report; the controller sends a first configuration message to the TP to be connected; wherein the first configuration message is used to instruct the TP to be connected to perform data transmission with the user equipment.

In one possible design, before the controller configures the parameters for the user equipment, the method further includes: the controller receiving a third addition request message from the base station; the third addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and indicating that a tunnel is established between the base station and the controller to be accessed to the user equipment; the controller sends the parameters to a base station, and the method comprises the following steps: the controller sends a third addition request confirmation message to the base station according to the third addition request message; wherein the third addition request acknowledgement message includes the parameter; the controller receives a third measurement report from the TP managed by the controller and determines a TP to be connected according to the third measurement report; the controller sends a second configuration message to the TP to be connected; the second configuration message includes an identifier of the base station, and the second configuration message is used to indicate the TP to be connected to perform data transmission with the user equipment.

In one possible design, before the controller configures the parameters for the user equipment, the method further includes: the controller receiving a third addition request message from the base station; the third addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and indicating that a tunnel is established between the base station and the controller to be accessed to the user equipment; the controller sends the parameters to a base station, and the method comprises the following steps: the controller sends a third addition request confirmation message to the base station according to the third addition request message; wherein the third addition request acknowledgement message includes the parameter; the controller receiving a third measurement report from a TP managed by the controller and determining a candidate TP based on the third measurement report; the controller sends indication information to the base station; wherein the indication information includes an identification of the candidate TP.

In a third aspect, an embodiment of the present invention provides a dual connectivity method, including:

the user equipment receives a first connection reconfiguration message from a base station; the first connection reconfiguration message comprises parameters configured for the user equipment by a controller to be accessed, wherein the parameters comprise an access sequence, a channel for sending the access sequence, an uplink reference signal, a channel for sending the uplink reference signal, a period for sending the uplink reference signal and a DCID; the user equipment establishes connection with the controller to be accessed according to the parameters in the first connection reconfiguration message; wherein the user equipment has established a connection with the base station.

In one possible design, the base station is co-sited with the controller to be accessed; after the ue establishes a connection with the control to be accessed according to the first connection reconfiguration message, the method further includes: and the user equipment sends the uplink reference signal to a sending point TP managed by the controller to be accessed through a channel for sending the uplink reference signal, wherein the uplink reference signal is used for the TP to generate a first measurement report.

In one possible design, after the ue transmits the uplink reference signal to a TP through a channel over which the uplink reference signal is transmitted, the method further includes: receiving, by the user equipment, a second connection reconfiguration message from the base station; the second connection reconfiguration message is used for instructing the user equipment to perform data transmission with the base station and the TP to be connected at the same time; and the user equipment simultaneously performs data transmission with the base station and the TP to be connected according to the second connection reconfiguration message.

In one possible design, the first connection reconfiguration message is further used to instruct the ue to perform data transmission from the base station and the to-be-connected TP managed by the to-be-accessed controller at the same time; after the ue establishes a connection with the control to be accessed according to the first connection reconfiguration message, the method further includes: the user equipment sends an access sequence to the TP managed by the controller to be accessed through a channel for sending the access sequence; wherein the access sequence is used for random access and for the TP to determine a second measurement report.

In one possible design, after the ue establishes a connection with the control to be accessed according to the first connection reconfiguration message, the method further includes: the user equipment sends the uplink reference signal to the TP managed by the controller to be accessed through a channel for sending the uplink reference signal; wherein the uplink reference signal is used by the TP to generate a third measurement report; receiving, by the user equipment, a third connection reconfiguration message from the base station; the third connection reconfiguration message is used for instructing the user equipment to perform data transmission with the base station and the TP to be connected at the same time; and the user equipment simultaneously performs data transmission with the base station and the TP to be connected according to the third connection reconfiguration message.

In a fourth aspect, an embodiment of the present invention provides a dual connectivity method, including: the LTE base station sends an increase request message to the NR base station; the LTE base station receives an increase request confirmation message from the NR base station; the LTE base station sends an LTE RRC message to the user equipment; the LTE base station receives an LTE RRC configuration result message from the user equipment; the LTE base station analyzes the LTE RRC configuration result message, determines the configuration result of the LTE RRC entity and acquires the NR RRC configuration result message; and the LTE base station sends the NR RRC configuration result message to the NR base station. The data can be obtained from the LTE base station and the NR base station by the user equipment at the same time, and the throughput of the UE is improved.

In one possible design, after the LTE base station sends the NR RRC configuration result message to the NR base station, the method further includes: and the LTE base station receives the configuration state indication message of the NR RRC entity from the NR base station, and the LTE base station determines the configuration result of the NR RRC entity according to the configuration state indication message of the NR RRC entity. The LTE base station can acquire the configuration result of the NRRRC entity from the NR base station.

In one possible design, after the LTE base station determines the configuration result of the NRRRC entity according to the configuration state indication message of the NR RRC entity, the method further includes: the LTE base station sends a release message to the user equipment. The method and the device can save resources of the user equipment and improve the utilization rate of the resources of the user equipment.

In a fifth aspect, an embodiment of the present invention provides a dual connectivity method, including: the NR base station receives an increase request message from the LTE base station; the NR base station configures parameters for the user equipment according to the increase request message; the NR base station sends an increase request confirmation message to the LTE base station, receives an NR RRC configuration result message from the LTE base station, analyzes the NR RRC configuration result message, and determines a configuration state indication message of an NR RRC entity.

In one possible design, after the NR base station parses the NR RRC configuration result message and determines the configuration status indication message of the NR RRC entity, the method further includes: and the NR base station sends the configuration state indication message of the NR RRC entity to the LTE base station.

In a sixth aspect, an embodiment of the present invention provides a dual connectivity method, including: the user equipment receives an LTERRC message from an LTE base station; the user equipment executes the configuration of the LTE base station and the NR base station; and the user equipment sends an LTE RRC configuration result message to the LTE base station.

In one possible design, after the user equipment sends the LTE RRC configuration result message to the LTE base station, the method further includes: and the user equipment receives a release message from the LTE base station, and releases the NR configuration according to the release message.

In a seventh aspect, an embodiment of the present invention provides a base station, including:

the first receiver is used for receiving the parameters configured for the user equipment by the controller to be accessed from the controller to be accessed; the parameters comprise an access sequence, a channel for sending the access sequence, an uplink reference signal, a channel for sending the uplink reference signal, a period for sending the uplink reference signal and a DCID; a first transmitter, configured to send a first connection reconfiguration message to the ue under an instruction of a processor, where the first connection reconfiguration message is used to instruct the ue to establish a connection with the controller to be accessed according to the parameter; wherein the first connection reconfiguration message includes the parameter, and the base station and the user equipment have established connection.

In one possible design, the base station is co-sited with the controller to be accessed; the first receiver is further configured to receive a first measurement report from the controller-managed transmission point TP to be accessed; the processor is configured to determine a TP of the TPs to be connected according to the first measurement report.

In one possible design, the first transmitter is further configured to transmit a first add request message to the TP to be connected; wherein the first addition request message is used for indicating that a tunnel is established for a bearer of the user equipment between the base station and the TP to be connected; the base station further comprises: a second receiver, configured to receive, from the TP to be connected, a first addition request acknowledgement message sent by the TP to be connected according to the first addition request message; the first transmitter is further configured to send, under the instruction of the processor, a second connection reconfiguration message to the ue, where the second connection reconfiguration message is used to instruct the ue to perform data transmission with the base station and the TP to be connected at the same time.

In one possible design, the first connection reconfiguration message is further used to instruct the ue to perform data transmission with the TP to be connected managed by the base station and the controller to be accessed at the same time; the base station further comprises: a second transmitter, configured to transmit a second addition request message to the controller to be accessed under an instruction of the processor; the second addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and indicating that a tunnel is established between the base station and the controller to be accessed to the bearer of the user equipment; the first receiver is specifically configured to: receiving a second increase request confirmation message sent by the controller to be accessed according to the second increase request message from the controller to be accessed; wherein the second addition request acknowledgement message includes the parameter.

In one possible design, the base station further includes a second transmitter, configured to transmit a third addition request message to the controller to be accessed under the instruction of the processor; wherein, the third addition request message is used for instructing the controller to be accessed to configure parameters for the user equipment and instructing to establish a tunnel for a bearer of the user equipment between the base station and the controller to be accessed; the first receiver is specifically configured to receive, from the controller to be accessed, a third addition request acknowledgement message sent by the controller to be accessed according to the third addition request message; wherein the third addition request acknowledgement message includes the parameter; the base station further comprises a second receiver for receiving a fourth addition request message from the to-be-connected TP managed by the to-be-accessed controller; wherein the fourth addition request message is used to instruct establishment of a tunnel for a bearer of the user equipment between the base station and the TP to be connected; the first transmitter is further configured to send, under the instruction of the processor, a third connection reconfiguration message to the ue, where the third connection reconfiguration message is used to instruct the ue to perform data transmission with the base station and the TP to be connected at the same time.

In one possible design, the base station further includes a second transmitter, configured to transmit a third addition request message to the controller to be accessed under the instruction of the processor; wherein, the third addition request message is used for instructing the controller to be accessed to configure parameters for the user equipment and instructing to establish a tunnel for a bearer of the user equipment between the base station and the controller to be accessed; the first receiver is specifically configured to receive, from the controller to be accessed, a third addition request acknowledgement message sent by the controller to be accessed according to the third addition request message; wherein the third addition request acknowledgement message includes the parameter; the first receiver is further used for receiving indication information from the controller to be accessed; the processor is used for determining the TP to be connected managed by the controller to be accessed according to the indication information; wherein the indication information includes an identification of a candidate TP, the candidate TP being determined by the controller to be accessed; the first transmitter is further configured to transmit a fourth addition request message to the TP to be connected under the instruction of the processor; wherein the fourth addition request message is used to instruct establishment of a tunnel for a bearer of the user equipment between the base station and the TP to be connected; the base station further comprises a second receiver, configured to receive, from the TP to be connected, a fourth addition request acknowledgement message sent by the TP to be connected according to the fourth addition request message; the first transmitter is further configured to transmit a third connection reconfiguration message to the user equipment; wherein the third connection reconfiguration message is used to instruct the ue to perform data transmission with the base station and the TP to be connected at the same time.

In an eighth aspect, an embodiment of the present invention provides a controller, including: a processor configured to configure parameters for a user equipment; the parameters comprise an access sequence, a channel for sending the access sequence, an uplink reference signal, a channel for sending the uplink reference signal, a period for sending the uplink reference signal and a special connection identifier (DCID); a first transmitter for transmitting the parameter to a base station under the instruction of the processor; the controller is a controller to be accessed by the user equipment, and the user equipment and the base station are connected.

In one possible design, the first connection reconfiguration message is further used to instruct the ue to perform data transmission with the TP to be connected managed by the base station and the controller to be accessed at the same time; the controller further includes: a first receiver for receiving a second addition request message from the base station; the second addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and indicating that a tunnel is established between the base station and the controller to be accessed to the bearer of the user equipment; the first transmitter is specifically configured to transmit a second addition request acknowledgement message to the base station according to the second addition request message under the instruction of the processor; wherein the second addition request acknowledgement message includes the parameter.

In one possible design, the controller further includes: a second receiver for receiving a second measurement report from a TP managed by the controller and determining a TP to be connected according to the second measurement report; a second transmitter, configured to transmit a first configuration message to the TP to be connected; the first configuration information is used to instruct the TP to be connected to perform data transmission with the user equipment.

In one possible design, the controller further includes the first receiver to receive a third addition request message from the base station; the third addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and indicating that a tunnel is established between the base station and the controller to be accessed to the user equipment; the first transmitter is specifically configured to transmit a third addition request acknowledgement message to the base station according to the third addition request message; wherein the third addition request acknowledgement message includes the parameter; the second receiver is further for receiving a third measurement report from the controller-managed TP; the processor is further configured to determine a TP to be connected according to the third measurement report; the controller further comprises a second transmitter for transmitting a second configuration message to the TP to be connected under the instruction of the processor; the second configuration message includes an identifier of the base station, and the second configuration message is used to indicate the TP to be connected to perform data transmission with the user equipment.

In one possible design, the controller further includes a first receiver to receive a third addition request message from the base station; the third addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and indicating that a tunnel is established between the base station and the controller to be accessed to the user equipment; the first transmitter is specifically configured to transmit, under the instruction of the processor, a third addition request acknowledgement message to the base station according to the third addition request message; wherein the third addition request acknowledgement message includes the parameter; the controller further comprises a second receiver for receiving a third measurement report from the TP managed by the controller and determining a candidate TP based on the third measurement report; the first transmitter is further configured to transmit indication information to the base station under the instruction of the processor; wherein the indication information includes an identification of the candidate TP.

In a ninth aspect, an embodiment of the present invention provides a user equipment, including: a receiver for receiving a first connection reconfiguration message from a base station; the first connection reconfiguration message comprises parameters configured for the user equipment by a controller to be accessed, wherein the parameters comprise an access sequence, a channel for sending the access sequence, an uplink reference signal, a channel for sending the uplink reference signal, a period for sending the uplink reference signal and a DCID; the processor is used for establishing connection with the controller to be accessed according to the parameters in the first connection reconfiguration message; wherein the user equipment has established a connection with the base station.

In one possible design, the base station is co-sited with the controller to be accessed; the user equipment further comprises a transmitter, configured to transmit the uplink reference signal to a transmission point TP managed by the controller to be accessed through a channel for transmitting the uplink reference signal under the instruction of the processor, where the uplink reference signal is used for the TP to generate a first measurement report.

In one possible design, the receiver is further to receive a second connection reconfiguration message from the base station; the second connection reconfiguration message is used for instructing the user equipment to perform data transmission with the base station and the TP to be connected at the same time; and the user equipment simultaneously performs data transmission with the base station and the TP to be connected according to the second connection reconfiguration message.

In one possible design, the first connection reconfiguration message is further used to instruct the ue to perform data transmission from the base station and the to-be-connected TP managed by the to-be-accessed controller at the same time; the user equipment also comprises a transmitter, which is used for transmitting the access sequence to the TP managed by the controller to be accessed through a channel for transmitting the access sequence; wherein the access sequence is used for random access and for the TP to determine a second measurement report.

In one possible design, the ue further includes a transmitter, configured to transmit an uplink reference signal to the TP managed by the controller to be accessed through a channel for transmitting the uplink reference signal; wherein the uplink reference signal is used by the TP to generate a third measurement report; a receiver for receiving a third connection reconfiguration message from the base station; the third connection reconfiguration message is used for instructing the user equipment to perform data transmission with the base station and the TP to be connected at the same time; and the processor is used for simultaneously carrying out data transmission with the base station and the TP to be connected according to the third connection reconfiguration message.

In a tenth aspect, an embodiment of the present invention provides an LTE base station, including: the first transmitter is used for transmitting an increase request message to the NR base station under the instruction of the processor, the first receiver is used for receiving an increase request confirmation message from the NR base station, the second transmitter is used for transmitting an LTE RRC message to the user equipment under the instruction of the processor, the second receiver is used for receiving the LTE RRC configuration result message from the user equipment, the processor is used for analyzing the LTE RRC configuration result message, determining the configuration result of the LTE RRC entity and obtaining the NR RRC configuration result message, and the first transmitter is further used for transmitting the NR RRC configuration result message to the NR base station under the instruction of the processor.

In one possible design, the first receiver is further configured to receive a configuration state indication message of the NR RRC entity from the NR base station, and the processor is further configured to determine a configuration result of the NR RRC entity according to the configuration state indication message of the NR RRC entity.

In one possible design, the second transmitter is further configured to transmit a release message to the user equipment at the direction of the processor.

In an eleventh aspect, an embodiment of the present invention provides an NR base station, including: the receiver is used for receiving an increase request message from the LTE base station, the processor is used for configuring parameters for the user equipment according to the increase request message, the transmitter is used for transmitting an increase request confirmation message to the LTE base station under the instruction of the processor, the receiver is also used for receiving an NR RRC configuration result message from the LTE base station, and the processor is also used for analyzing the NR RRC configuration result message and determining a configuration state indication message of an NR RRC entity.

In one possible design, the transmitter is further configured to transmit a configuration status indication message of the NR RRC entity to the LTE base station under the instruction of the processor.

In a twelfth aspect, an embodiment of the present invention provides a user equipment, including: the receiver is used for receiving an LTE RRC message from an LTE base station, the processor is used for executing the configuration of the LTE base station and the NR base station, and the transmitter is used for transmitting an LTERRC configuration result message to the LTE base station.

In one possible design, the receiver is further configured to receive a release message from the LTE base station, and the processor is further configured to release the NR configuration according to the release message.

In a thirteenth aspect, an embodiment of the present invention provides a base station, including: the receiving module is used for receiving the parameters configured by the controller to be accessed for the user equipment from the controller to be accessed; the parameters comprise an access sequence, a channel for sending the access sequence, an uplink reference signal, a channel for sending the uplink reference signal, a period for sending the uplink reference signal and a DCID; a sending module, configured to send a first connection reconfiguration message to the ue under the instruction of the processing module, where the first connection reconfiguration message is used to instruct the ue to establish a connection with the controller to be accessed according to the parameter; wherein the first connection reconfiguration message includes the parameter, and the base station and the user equipment have established connection.

In a fourteenth aspect, an embodiment of the present invention provides a controller, including: the processing module is used for configuring parameters for the user equipment; the parameters comprise an access sequence, a channel for sending the access sequence, an uplink reference signal, a channel for sending the uplink reference signal, a period for sending the uplink reference signal and a special connection identifier (DCID); a sending module, configured to send the parameter to a base station under the instruction of the processing module; the controller is a controller to be accessed by the user equipment, and the user equipment and the base station are connected.

In a fifteenth aspect, an embodiment of the present invention provides a user equipment, including: a receiving module, configured to receive a first connection reconfiguration message from a base station; the first connection reconfiguration message comprises parameters configured for the user equipment by a controller to be accessed, wherein the parameters comprise an access sequence, a channel for sending the access sequence, an uplink reference signal, a channel for sending the uplink reference signal, a period for sending the uplink reference signal and a DCID; the processing module is used for establishing connection with the controller to be accessed according to the parameters in the first connection reconfiguration message; wherein the user equipment has established a connection with the base station.

In a sixteenth aspect, an embodiment of the present invention provides an LTE base station, including: the first sending module is configured to send an increase request message to the NR base station under the instruction of the processor, the first receiving module is configured to receive an increase request acknowledgement message from the NR base station, the second sending module is configured to send an LTE RRC message to the user equipment under the instruction of the processor, the second receiving module is configured to receive an LTE RRC configuration result message from the user equipment, the processing module is configured to parse the LTE RRC configuration result message, determine a configuration result of the LTE RRC entity, and obtain an NR RRC configuration result message, and the first sending module is further configured to send the NR RRC configuration result message to the NR base station under the instruction of the processor.

In a seventeenth aspect, an embodiment of the present invention provides an NR base station, including: the receiving module is used for receiving an increase request message from the LTE base station, the processor is used for configuring parameters for the user equipment according to the increase request message, the transmitting module is used for transmitting an increase request confirmation message to the LTE base station under the indication of the processor, the receiving module is also used for receiving an NR RRC configuration result message from the LTE base station, and the processing module is also used for analyzing the NR RRC configuration result message and determining a configuration state indication message of an NR RRC entity.

In an eighteenth aspect, an embodiment of the present invention provides a user equipment, including: the receiving module is used for receiving an LTE RRC message from the LTE base station, the processing module is used for executing the configuration of the LTE base station and the NR base station, and the transmitter is used for transmitting an LTE RRC configuration result message to the LTE base station.

In a nineteenth aspect, an embodiment of the present invention provides a communication system, including: the user equipment, the base station and the controller are described above.

In a twentieth aspect, an embodiment of the present invention provides a communication system, including: the user equipment, the LTE base station and the NR base station are described above.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1A is an application scenario architecture diagram of an embodiment of a dual connectivity method according to the present invention;

fig. 1B is a diagram of another application scenario architecture of an embodiment of a dual connectivity method according to the present invention;

fig. 1C is a diagram of an application scenario architecture according to another embodiment of the dual connectivity method provided in the embodiment of the present invention;

fig. 2 is a signaling interaction diagram of a first embodiment of a dual connectivity method according to the present invention;

fig. 3 is a signaling interaction diagram of a second embodiment of a dual connectivity method according to the present invention;

fig. 4 is a signaling interaction diagram of a third embodiment of a dual connectivity method according to the present invention;

fig. 5 is a signaling interaction diagram of a fourth embodiment of a dual connectivity method according to the present invention;

fig. 6 is a signaling interaction diagram of a fifth embodiment of a dual connectivity method according to the present invention;

fig. 7 is a signaling interaction diagram of a sixth embodiment of a dual connectivity method according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a base station according to a first embodiment of the present invention;

fig. 9 is a schematic structural diagram of a second base station according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a base station according to a third embodiment of the present invention;

fig. 11 is a schematic structural diagram of a first embodiment of a controller according to the present invention;

fig. 12 is a schematic structural diagram of a second embodiment of the controller according to the present invention;

fig. 13 is a schematic structural diagram of a third embodiment of the controller according to the present invention;

fig. 14 is a schematic structural diagram of a first user equipment embodiment according to an embodiment of the present invention;

fig. 15 is a schematic structural diagram of a second user equipment embodiment according to an embodiment of the present invention;

fig. 16 is a schematic structural diagram of a first LTE base station according to an embodiment of the present invention;

fig. 17 is a schematic structural diagram of a second LTE base station according to an embodiment of the present invention;

fig. 18 is a schematic structural diagram of an NR base station according to a first embodiment of the present invention;

fig. 19 is a schematic structural diagram of a second NR base station according to an embodiment of the present invention;

fig. 20 is a schematic structural diagram of a first embodiment of a communication system according to the present invention;

fig. 21 is a schematic structural diagram of a second communication system according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Fig. 1A is an application scenario architecture diagram of an embodiment of a dual connectivity method according to an embodiment of the present invention. As shown in fig. 1A, in the present application scenario, the base station and the controller are co-located (Collocated). If the base station and the controller are co-located, the messages of the base station and the controller are shared, that is, the message controller acquired by the base station can correspondingly receive the messages. The No cell system comprises a controller and TPs managed by the controller, wherein signal overlays of the TPs form a Hyper cell. In fig. 1, a controller and 3 TPs are shown to form a no cell system. The area formed by the closed line segment 11 in fig. 1A is the area covered by the base station; the area formed by the closed line segment 12 is an area covered by a Hyper cell, and the area formed by the closed line segment 13 is an area covered by one TP. The area of the closed line segment 11 and the area of the closed line segment 12 may be considered to approximately coincide. In the overlapping area, the user equipment can simultaneously exchange information with the core network through the base station and the controller, and the throughput of the user equipment is improved.

Fig. 1B is a diagram of another application scenario architecture of an embodiment of a dual connectivity method according to the present invention. As shown in fig. 1B, it differs from fig. 1A in that the base station and the controller are not co-sited, and there is an interface between the base station and the controller, and there is no interface between the base station and the TP. Fig. 1C is a diagram of another application scenario architecture according to the embodiment of the dual connectivity method provided in the embodiment of the present invention. As shown in fig. 1C, it differs from fig. 1B in that there is an interface between the base station and the controller, and also between the base station and each TP. Fig. 1B and 1C both show a controller and 3 TPs forming a no cell system.

In the no cell system, the controller manages the radio resources of the super cell. The user equipment can access the controller through the TP managed by the access controller. Taking downlink data transmission as an example, the controller sends data to the TP selected by the controller for the user equipment, and then the TP sends the data to the user equipment.

The base station related to the embodiment of the present invention may be a base station in a Universal Mobile Telecommunications System (UMTS), an evolved node b in LTE, or a New Radio Access Technology (NR). The user equipment according to the embodiments of the present invention may be a wireless terminal or a wired terminal, and the wireless terminal may be a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or other processing device connected to a wireless modem. Wireless terminals, which may be mobile terminals such as mobile telephones (or "cellular" telephones) and computers having mobile terminals, such as portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices, may communicate with one or more core networks via a Radio Access Network (e.g., a Radio Access Network, RAN). Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). A wireless Terminal may also be referred to as a system, a Subscriber unit (Subscriber unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), an Access Point (Access Point), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), a User Equipment (User device), or a User Equipment (User Equipment).

Fig. 2 is a signaling interaction diagram of a dual connectivity method according to a first embodiment of the present invention. The dual connection method provided by the embodiment of the invention can be applied to the application scenarios shown in fig. 1A, 1B and 1C. As shown in fig. 2, a dual connection method provided in an embodiment of the present invention includes:

s201: and the controller to be accessed configures parameters for the user equipment.

S202: and the controller to be accessed sends the parameter to the base station.

Specifically, the controller configures parameters for the user equipment and sends the parameters to the base station so that the base station sends a first connection reconfiguration message including the parameters to the user equipment. The controller is a controller to be accessed by the user equipment. The user equipment has established a connection with the base station.

The controller to be accessed can make a decision by itself to configure parameters for the user equipment. The parameter may include a Dedicated Connection Identifier (DCID) configured by the controller to be accessed to the ue, an access sequence, a channel for transmitting the access sequence, an uplink reference signal, a channel for transmitting the uplink reference signal, a period for transmitting the uplink reference signal, and other parameters. After receiving the parameters, the user equipment can establish connection with the controller to be accessed according to the parameters.

S203: and the base station receives the parameters configured for the user equipment by the controller to be accessed from the controller to be accessed.

S204: the base station sends a first connection reconfiguration message to the user equipment.

The first connection reconfiguration message is used for instructing the user equipment to establish connection with the controller to be accessed according to the parameter. The first connection reconfiguration message comprises parameters configured for the user equipment by the controller to be accessed.

Specifically, after the controller to be accessed configures parameters, if the base station and the controller to be accessed share the same station, the base station may directly obtain the parameters configured by the controller to be accessed to the user equipment; if the base station and the controller to be accessed are not co-located, the parameters can be obtained through signaling interaction of a communication interface between the base station and the controller to be accessed. After obtaining the parameters, the base station encapsulates the parameters in the first connection reconfiguration message and sends the first connection reconfiguration message to the user equipment.

It should be noted that the connection reconfiguration message may be a Radio Resource Control (RRC) connection reconfiguration message, or may be other configuration messages. The present embodiment does not limit this. The first connection reconfiguration message may further include parameters configured by the base station for the user equipment. This is because after the controller to be accessed configures the parameters for the user equipment, the base station may also need to change the configuration of the user equipment, i.e. the user equipment is reconfigured.

S205: the user equipment receives a first connection reconfiguration message from the base station.

S206: and the user equipment establishes connection with the controller to be accessed according to the parameters in the first connection reconfiguration message.

Specifically, the ue may perform configuration according to the parameters in the first connection reconfiguration message after receiving the first connection reconfiguration message. The ue may send the sequence on the channel for sending the access sequence according to the parameter in the first connection reconfiguration message and using the DCID as the ID when the ue accesses the controller to be accessed, so as to perform random access. And after the access, data transmission can be carried out. Of course, the ue may also establish a connection with the controller to be accessed according to the parameter in the first connection reconfiguration message in other manners, which is not limited in this embodiment of the present invention.

Optionally, after the configuration of the user equipment is completed, a first connection reconfiguration complete message may be further sent to the base station.

After the user equipment accesses the cell managed by the controller to be accessed, the controller can select a TP to be connected for the user equipment, the TP to be connected is managed by the controller to be accessed, and then the user equipment can communicate with the core network through the base station and can also communicate with the core network through the TP to be connected, the controller and the base station. Taking downlink data transmission as an example, for example, the base station may directly send data with high requirement on delay to the user equipment, the base station may send data with low requirement on delay to the controller, the controller sends the data to the TP, and the TP sends the data to the user equipment. In this way, the user equipment can obtain data from the base station and the controller at the same time, and the throughput of the UE is improved.

In the dual connection method provided by the embodiment of the present invention, a parameter is configured for a user equipment through a controller to be accessed, and the parameter is sent to a base station, after receiving the parameter, the base station sends a first connection reconfiguration message including the parameter to the user equipment, and the user equipment receives the first connection reconfiguration message sent by the base station and establishes a connection with the controller to be accessed according to the parameter.

Fig. 3 is a signaling interaction diagram of a second embodiment of a dual connectivity method according to the present invention. The dual connection method provided by the embodiment of the invention is applied to the application scene shown in fig. 1A. On the basis of the embodiment shown in fig. 2, the embodiment of the present invention will explain the steps after S206 in detail. The controller and the base station share the same station in the embodiment of the invention. As shown in fig. 3, a dual connection method provided in an embodiment of the present invention includes:

s301: and the controller to be accessed configures parameters for the user equipment.

Optionally, the parameters include: the base station comprises an access sequence, a channel for sending the access sequence, an uplink reference signal, a channel for sending the uplink reference signal, a period for sending the uplink reference signal and a DCID.

S302: and the controller to be accessed sends the parameter to the base station.

Optionally, the controller to be accessed may send the parameter to the base station through a communication interface between the controller and the base station.

S303: and the base station receives the parameters configured for the user equipment by the controller to be accessed from the controller to be accessed.

S304: the base station sends a first connection reconfiguration message to the user equipment.

S305: the user equipment receives a first connection reconfiguration message from the base station.

S306: and the user equipment establishes connection with the controller to be accessed according to the parameters in the first connection reconfiguration message.

The implementation and technical principles of S301-S306 are the same as those of S201-S206, and are not described herein again.

S307: and the user equipment transmits the uplink reference signal to the TP managed by the controller to be accessed through the channel for transmitting the uplink reference signal.

The uplink reference information is used for the TP to generate a first measurement report.

Specifically, the ue may send uplink reference signals to all TPs in the Hyper cell. Fig. 3 shows that when the user equipment transmits uplink reference signals to all TPs, there are two TPs, TP1 and TP2, which receive the uplink reference signals.

S308: and the TP generates a first measurement report after receiving the uplink reference signal.

Specifically, after receiving the uplink reference signal, the TP may generate a first measurement report according to its own algorithm.

S309: the TP sends a first measurement report to the base station.

S310: the base station receives a first measurement report from the TPs and determines TPs to be connected among the TPs according to the first measurement report.

The first measurement report is generated after the TP receives an uplink reference signal transmitted by the user equipment through a channel for transmitting the uplink reference signal.

Specifically, the first measurement report includes uplink reference signal power or quality information received by the TP. In one implementation manner, after receiving a first measurement report sent by a TP, a base station selects the TP corresponding to the measurement report with the largest power in the first measurement report as a TP to be connected. In this embodiment, the TP to be connected determined by the base station is TP 1.

S311: the base station transmits a first addition request message to the TP to be connected.

Specifically, the first addition request message is used to instruct the base station to establish a tunnel for a bearer of the ue with the TP to be connected.

S312: and the TP to be connected sends a first increase request confirmation message determined according to the first increase request message to the base station.

Specifically, after receiving the first addition request message, the TP to be connected performs configuration, and after completing the configuration, sends a first addition request confirmation message determined according to the first addition request message to the base station.

S313: and the base station receives a first increase request confirmation message sent by the TP to be connected according to the first increase request message from the TP to be connected.

S314: and the base station sends a second connection reconfiguration message to the user equipment.

The second connection reconfiguration message is used to instruct the ue to perform data transmission with the base station and the TP to be connected at the same time.

Specifically, the base station sends the second connection reconfiguration message to the user equipment after receiving the first addition request acknowledgement message sent by the TP to be connected.

The data transmission here may be uplink transmission data and downlink reception data of the user equipment.

S315: the user equipment receives a second connection reconfiguration message from the base station.

The second connection reconfiguration message is sent to the user equipment after the base station receives a first measurement report sent by the TP, determines the TP to be connected according to the first measurement report, sends a first increase request message to the TP to be connected, and receives a first increase request confirmation message sent by the TP to be connected according to the first increase request message.

S316: and the user equipment simultaneously performs data transmission with the base station and the TP to be connected according to the second connection reconfiguration message.

In particular, the second connection reconfiguration message is used to instruct the user equipment to make a dual connection. And after the user equipment is configured according to the second connection reconfiguration message, the user equipment can simultaneously transmit data with the base station and the TP to be connected.

In one possible implementation manner, after S316, the method further includes:

s317: and the user equipment sends a second connection reconfiguration finishing message to the base station according to the second connection reconfiguration message.

And the user equipment sends a second connection reconfiguration finishing message to the base station so that the base station sends the configuration finishing message to the TP to be connected according to the second connection reconfiguration finishing message.

S318: and the base station receives a second connection reconfiguration finishing message sent by the user equipment according to the second connection reconfiguration message from the user equipment.

S319: and the base station sends a configuration completion message to the TP to be connected according to the second connection reconfiguration completion message.

And then, the TP to be connected can know that the user equipment has finished accessing the configuration of the hyper cell. When there is downlink data, the TP to be connected can send the data to the user equipment.

The dual connectivity method provided in the embodiments of the present invention, when the base station and the controller to be accessed are co-located, enables the ue to access the cell managed by the controller to be accessed through the TP to be connected, so that the ue interacts with the core network through the base station, and the ue interacts with the core network through the base station and the controller, thereby improving throughput of the ue.

Fig. 4 is a signaling interaction diagram of a third embodiment of a dual connectivity method according to the present invention. The dual connection method provided by the embodiment of the present invention is based on the embodiment shown in fig. 2, and the steps before S201 and after S206 are explained in detail:

the dual connectivity method provided by the embodiment of the present invention is applied to the application scenario shown in fig. 1B, that is, a scenario where there is no interface between a base station and a TP managed by a controller to be accessed.

S401: the user equipment transmits a fourth measurement report to the base station.

The user equipment sends a fourth measurement report to the base station, so that the base station determines a controller to be accessed according to the fourth measurement report, sends a second increase request message to the controller to be accessed, and receives a second increase request confirmation message sent by the controller to be accessed according to the second increase request message. And the second addition request confirmation message comprises parameters configured for the user equipment by the controller to be accessed.

This step is an optional step. For example, the ue may generate a fourth measurement report according to the received reference signal strength or quality of the hyper cell, and send the fourth measurement report to the base station.

S402: and the base station receives a fourth measurement report from the user equipment and determines the controller to be accessed according to the fourth measurement report.

Specifically, the base station may determine whether to perform dual connectivity for the user equipment and which controller to access according to the fourth measurement report. For example, the base station may determine the controller to be accessed according to the fourth measurement report.

S403: and the base station sends a second increase request message to the controller to be accessed.

The second addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and for indicating that a tunnel is established between the base station and the controller to be accessed for the bearer of the user equipment.

S404: the controller to be accessed receives a second addition request message from the base station.

The controller is a controller to be accessed by the user equipment.

S405: and the controller to be accessed configures parameters for the user equipment.

In particular, the controller may configure the parameters for the user equipment after receiving the second addition request message. Optionally, the parameter includes an access sequence, a channel for transmitting the access sequence, an uplink reference signal, a channel for transmitting the uplink reference signal, a period of the uplink reference signal, and a DCID.

S406: and the controller to be accessed sends a second increase request confirmation message to the base station according to the second increase request message.

The second addition request confirmation message comprises parameters configured for the user equipment by the controller to be accessed.

S407: and the base station receives a second increase request confirmation message sent by the controller to be accessed according to the second increase request message from the controller to be accessed.

S408: the base station sends a first connection reconfiguration message to the user equipment.

Specifically, in this embodiment, the first connection reconfiguration message is used to instruct the ue to establish a connection with the controller to be accessed according to the first connection reconfiguration message, and is also used to instruct the ue to perform data transmission with the TP to be connected managed by the base station and the controller to be accessed at the same time.

S409: the user equipment receives a first connection reconfiguration message from the base station.

S410: and the user equipment establishes connection with the controller to be accessed according to the first connection reconfiguration message.

After S410, the embodiment of the present invention provides a method for accessing a cell managed by a controller to be accessed by a user equipment, including the following steps:

s411: the user equipment transmits the access sequence to the TP through a channel transmitting the access sequence.

The access sequence is used for random access, and the TP may determine a second measurement report according to the access sequence and send the second measurement report to the controller to be accessed.

S412: and generating a second measurement report after the TP receives the access sequence.

S413: the TP sends a second measurement report to the controller to be accessed.

S414: and the controller to be accessed receives the second measurement report from the TP and determines the TP to be connected according to the second measurement report.

The second measurement report is generated after the TP receives the access sequence sent by the user equipment to the TP.

Specifically, in S411-S414, when the ue accesses the cell managed by the controller, the ue sends the access sequence, and completes uplink synchronization and measurement with the TP, thereby saving signaling and network resources and improving efficiency.

S415: and the controller to be accessed sends a first configuration message to the TP to be connected.

The first configuration message is used to instruct the TP to be connected to perform data transmission with the user equipment.

S416: and the TP to be connected sends an access feedback message to the user equipment.

And after the TP to be connected completes configuration according to the first configuration message, sending an access feedback message to the user equipment.

S417: the user equipment receives an access feedback message from the TP to be connected.

And after the user equipment receives the access feedback message sent by the TP to be connected, the user equipment completes the cell managed by the access controller.

In the dual connectivity method provided by the embodiment of the present invention, when the ue accesses to the cell managed by the controller, the user equipment sends an access sequence to the TP, realizes the uplink synchronization with the TP and the measurement of an uplink reference signal, the first connection reconfiguration message is used for indicating the user equipment to establish the connection with the controller to be accessed according to the first connection reconfiguration message and also used for indicating the user equipment to simultaneously carry out data transmission with the base station and the TP to be connected managed by the controller to be accessed, on one hand, the first connection reconfiguration message has two functions, the signaling flow is saved, on the other hand, when the user equipment accesses the cell managed by the controller, the access sequence can be used for random access at the same time and the TP determines a second measurement report according to the access sequence, and the signaling flow is also saved, so that the efficiency of double connection is improved.

Fig. 5 is a signaling interaction diagram of a fourth embodiment of a dual connectivity method according to the present invention. The dual connection method provided by the embodiment of the present invention is explained in detail after S206 based on the embodiment shown in fig. 2. As shown in fig. 5, a dual connection method provided in an embodiment of the present invention includes:

the dual connectivity method provided by the embodiment of the present invention is applied to the application scenario shown in fig. 1C, that is, a scenario in which an interface is provided between a base station and a TP managed by a controller to be accessed.

S501: the user equipment transmits a fourth measurement report to the base station.

S502: and the base station receives a fourth measurement report from the user equipment and determines the controller to be accessed according to the fourth measurement report.

S503: and the base station sends a third increase request message to the controller to be accessed.

The third addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and for indicating that a tunnel is established between the base station and the controller to be accessed for the user equipment.

S504: the controller to be accessed receives a third addition request message from the base station.

S505: and the controller to be accessed configures parameters for the user equipment.

Specifically, the controller to be accessed may configure the parameters for the user equipment after receiving the third addition request message. Optionally, the parameter includes an access sequence, a channel for transmitting the access sequence, an uplink reference signal, a channel for transmitting the uplink reference signal, a period of the uplink reference signal, and a DCID.

S506: and the controller to be accessed sends a third increase request confirmation message to the base station according to the third increase request message.

The third addition request confirmation message includes parameters configured for the user equipment by the controller to be accessed.

S507: and the base station receives a third addition request confirmation message sent by the controller to be accessed according to the third addition request message from the controller to be accessed.

S508: the base station sends a first connection reconfiguration message to the user equipment.

The first connection reconfiguration message is used for instructing the user equipment to establish connection with the controller to be accessed according to the first connection reconfiguration message. The first connection reconfiguration message comprises parameters configured for the user equipment by the controller to be accessed.

S509: the user equipment receives a first connection reconfiguration message from the base station.

S510: and the user equipment establishes connection with the controller to be accessed according to the first connection reconfiguration message.

S511: and the user equipment transmits the uplink reference signal to the TP managed by the controller to be accessed through the channel for transmitting the uplink reference signal.

And the user equipment sends the uplink reference signal to the TP through the channel for sending the uplink reference signal so that the TP can generate a third measurement report, and sends the third measurement report to the controller to be accessed so that the controller to be accessed can determine the TP to be connected according to the third measurement report.

S512: and generating a third measurement report after the TP receives the uplink reference signal.

S513: the TP sends a third measurement report to the controller to be accessed.

S514: and the controller to be accessed receives a third measurement report from the TP and determines the TP to be connected according to the third measurement report.

The third measurement report is generated after the TP receives the uplink reference signal sent by the user equipment.

S515: and the controller to be accessed sends a second configuration message to the TP to be connected.

And the second configuration message comprises the identification of the base station. The second configuration message is used to instruct the TP to be connected to perform data transmission with the user equipment.

The controller to be accessed may learn the identifier of the base station in S503, or the controller to be accessed stores the identifier of the base station.

S516: the TP to be connected transmits a fourth addition request message to the base station.

And after receiving the second configuration message, the TP to be connected configures according to the parameters in the second configuration message to perform data transmission with the user equipment, and sends a fourth increase request message to the base station according to the identifier of the base station in the second configuration message.

The fourth addition request message is used to instruct to establish a tunnel for a bearer of the user equipment between the base station and the TP to be connected.

S517: the base station receives a fourth addition request message from the TP to be connected.

The TP to be connected is determined after the controller to be connected receives a third measurement report sent by the TP, the third measurement report is determined after the TP receives an uplink reference signal sent by the user equipment, and the fourth addition request message is determined after the TP to be connected receives a configuration message sent by the controller to be connected. The TP to be connected is managed by the controller to be accessed.

Optionally, after the base station receives the fourth addition request message sent by the TP to be connected, the base station may send a fourth addition request acknowledgement message to the TP to be connected.

S518: and the base station sends a third connection reconfiguration message to the user equipment.

The third connection reconfiguration message is used to instruct the ue to perform data transmission with the base station and the TP to be connected at the same time.

Specifically, the base station sends the third connection reconfiguration message to the user equipment after receiving the fourth addition request message.

S519: the user equipment receives a third connection reconfiguration message from the base station.

And the third connection reconfiguration message is determined according to the third increase request message after the base station receives the third increase request message sent by the TP to be connected.

S520: and the user equipment simultaneously performs data transmission with the base station and the TP to be connected according to the third connection reconfiguration message.

Optionally, the ue may configure according to the third connection reconfiguration message to perform data transmission with the base station and the TP to be connected at the same time.

Optionally, after the configuration is completed, the user equipment may further send a third connection reconfiguration complete message to the base station. And after receiving the third connection reconfiguration completion message, the base station sends a configuration completion message to the TP to be connected.

In the dual connectivity method provided in the embodiments of the present invention, when the base station and the TP managed by the controller to be accessed have interfaces, the TP to be connected may actively send the third addition request message to the base station, so that, after the user equipment implements dual connectivity, when data is transmitted in a downlink manner, the base station may directly send a part of the data to the user equipment, send another part of the data to the TP to be connected, and send the data to the user equipment by the TP to be connected, without passing through the controller, thereby saving network resources and further improving throughput of the user equipment.

Fig. 6 is a signaling interaction diagram of a fifth embodiment of a dual connectivity method according to the present invention. The dual connection method provided by the embodiment of the present invention is explained in detail after S206 based on the embodiment shown in fig. 2. Fig. 6 only shows the steps of S611 to S625, and the steps before S611 can refer to the steps of S201 to S206 in the embodiment shown in fig. 2 and S501 to S510 in the embodiment shown in fig. 5. As shown in fig. 6, a dual connection method provided in an embodiment of the present invention includes:

S611: and the user equipment transmits the uplink reference signal to the TP managed by the controller to be accessed through the channel for transmitting the uplink reference signal.

And the user equipment sends the uplink reference information to the TP through a channel for sending the uplink reference signal so that the TP can generate a third measurement report, and sends the third measurement report to the controller to be accessed so that the controller to be accessed can determine the TP to be connected according to the third measurement report.

S612: and generating a third measurement report after the TP receives the uplink reference signal.

S613: the TP sends a third measurement report to the controller to be accessed.

S614: the controller to be accessed receives a third measurement report from the TP and determines a candidate TP according to the third measurement report.

In particular, the controller may determine at least one candidate TP from the third measurement report.

S615: and the controller to be accessed sends indication information to the base station.

The indication information includes an identifier of a candidate TP, so that the base station determines the TP to be connected according to the indication information, and sends a fourth addition request message to the TP to be connected.

S616: and the base station receives the indication information from the controller to be accessed and determines the TP to be connected according to the indication information.

The indication information includes an identifier of a candidate TP, the candidate TP is determined after the controller to be accessed receives a third measurement report sent by the TP, and the third measurement report is determined after the TP receives an uplink reference signal sent by the user equipment.

S617: the base station transmits a fourth addition request message to the TP to be connected.

The fourth addition request message is used to instruct to establish a tunnel for the bearer of the user equipment between the base station and the TP to be connected.

S618: and the TP to be connected sends a fourth increase request confirmation message to the base station according to the fourth increase request message.

S619: and the base station receives a fourth addition request confirmation message sent by the TP to be connected according to the fourth addition request message from the TP to be connected.

S620: and the base station sends a third connection reconfiguration message to the user equipment.

S621: the user equipment receives a third connection reconfiguration message from the base station.

The third connection reconfiguration message is that the base station receives an indication message sent by a controller to be accessed, determines a TP to be connected according to the indication message, sends a fourth addition request message to the TP to be connected, and receives a fourth addition request confirmation message sent by the TP to be connected according to the fourth addition request message and then sends the fourth addition request confirmation message to the user equipment.

S622: and the user equipment simultaneously performs data transmission with the base station and the TP to be connected according to the third connection reconfiguration message.

Optionally, after S622, the method further includes:

s623: and the user equipment sends a third connection reconfiguration finishing message to the base station.

S624: the base station receives a third connection reconfiguration complete message from the user equipment.

S625: and the base station sends a configuration completion message to the TP to be connected.

The dual connectivity method provided in the embodiment of the present invention is different from the embodiment shown in fig. 5 in that a controller to be accessed indicates candidate TPs to a base station, and the base station makes a decision and then sends a fourth addition request message to the TPs to be connected.

In the dual connectivity method provided in the embodiments of the present invention, when the base station and the TP to be controlled and managed have interfaces, the base station may determine the TP to be connected according to the indication information sent by the controller to be accessed, and send the fourth addition request message to the TP to be connected, so that, after the dual connectivity is implemented for the user equipment, when data is transmitted in a downlink manner, the base station may directly send a part of data to the user equipment, send another part of data to the TP to be connected, and send the TP to be connected to the user equipment without passing through the controller, thereby saving network resources and further improving throughput of the user equipment.

Fig. 7 is a signaling interaction diagram of a sixth embodiment of a dual connectivity method according to an embodiment of the present invention. The dual-connection method provided in the embodiment shown in fig. 7 is based on the above embodiments, and will be described in detail with respect to the steps of performing dual-connection when the controller is a New radio access Technology (NR):

s701: the LTE base station transmits an increase request message to the NR base station.

The addition request message is used for indicating the NR base station to configure parameters for the user equipment and indicating that a tunnel is established between the LTE base station and the NR base station for the bearer of the user equipment.

In addition, the addition request message also carries negotiation parameters of the user equipment capability. The negotiation parameter may be a peak data rate (peak data rate) that the user equipment can support at the NR base station, a port that can be used, a maximum power that can be used, a carrier that can be used, a maximum transport block size, etc. that informs the NR base station of the user equipment. Specifically, the LTE base station may determine how large a data rate R1 is needed by the ue on the LTE base station side, and then inform the NR base station of the peak data rate that the ue can support, that is, subtracting R1 from R according to the total peak data rate R of the ue.

In summary, the add request message carries at least one of the following parameters: peak data rate can be supported, ports can be used, maximum power can be used, carriers can be used, maximum transport block size can be supported. These values may be determined by the LTE base station.

The LTE base station according to the embodiment of the present invention may also be a base station in a Universal Mobile Telecommunications System (UMTS). The No cell system is one possible implementation of NR.

S702: the NR base station receives an increase request message from the LTE base station.

S703: and the NR base station configures parameters for the user equipment according to the increase request message.

S704: the NR base station transmits an increase request acknowledgement message to the LTE base station.

Wherein, the addition request confirmation message comprises a complete NR RRC message. The complete NR RRC message includes parameters configured by the NR base station for the user equipment.

S705: the LTE base station receives an increase request acknowledgement message from the NR base station.

S706: the LTE base station sends an LTE RRC message to the user equipment.

The LTE RRC message comprises parameters configured for the user equipment by the LTE base station and an NR RRC message.

Specifically, after receiving the addition request acknowledgement message sent by the NR base station, the LTE base station does not parse the NR RRC message sent by the NR base station, but carries the NR RRC message as a container (container) in the LTE RRC message and sends the container to the user equipment. The LTE RRC message carries the NR RRC message, and further includes parameters of the LTE base station configured by the LTE base station for the user equipment.

S707: the user equipment receives an LTE RRC message from the LTE base station.

S708: the user equipment performs the configuration of the LTE base station and the NR base station.

Specifically, two RRC entities, an LTE RRC entity and an NR RRC entity, may exist in the ue, and are respectively configured to parse the LTE RRC message and the NR RRC message and perform corresponding configuration.

In the embodiment of the invention, after the user equipment receives the LTE RRC message, the LTE RRC entity analyzes the LTE RRC message and executes corresponding RRC configuration in the LTE RRC entity. Meanwhile, the LTE RRC entity does not parse the NR RRC message carried in the LTE RRC message, but sends the NR RRC message to the NR RRC entity. The NRRRC message is parsed and corresponding configuration is performed by the NR RRC entity.

The two RRC entities may succeed or fail to perform corresponding RRC configuration, and accordingly need to generate respective configuration complete messages or configuration failure messages.

In a first possible implementation manner, the LTE RRC entity performs LTE RRC configuration, generates an LTE RRC configuration complete message if the LTE RRC configuration is complete, and generates an LTE RRC configuration failure message if the LTE RRC configuration fails; the NR RRC entity performs NR RRC configuration, generates an NR RRC configuration failure message if completed, and generates an NR RRC configuration failure message if failed. And the NR RRC entity sends the generated NR RRC configuration completion message or NR RRC configuration failure message to the LTE RRC entity, and the LTE RRC entity does not carry out analysis and is carried in the LTE RRC configuration completion message or the LTE RRC configuration failure message.

In a second possible implementation manner, for the case that both configurations of the LTE RRC entity and the NR RRC entity are completed, and the case that the configuration of the LTE RRC entity is completed and the configuration of the NR RRC entity fails, the processing manner is the same as that of the first manner, that is, the LTE RRC entity generates an LTE RRC configuration complete message, and the NR RRC entity generates an NR RRC configuration complete message or an NR RRC configuration failure message, and carries the NR RRC configuration complete message. And for the case that the configuration of the LTE RRC entity fails, the NR RRC entity stops the configuration. Before that, the LTE RRC entity sends a failure indication to the NR RRC entity. The failure indication is used for indicating that the configuration of the LTE RRC side fails, and the NR RRC entity stops the configuration of the NR side after receiving the failure indication. The LTE RRC entity generates an LTE RRC configuration failure message, the NR RRC entity generates an NR RRC configuration failure message and transmits the NR RRC configuration failure message to the LTERRC entity, and the NR RRC configuration failure message is carried in the LTE RRC configuration failure message as a container.

In a third possible implementation manner, the difference from the first possible implementation manner is that the NR RRC entity may further notify the LTE RRC entity of the configuration result, and at this time, the LTE RRC configuration completion or the LTE RRC configuration failure message may further carry a configuration state indication message of the NR RRC entity. That is, in this implementation, the LTE RRC configuration result message includes a configuration state indication message of the NR RRC entity in addition to the LTE RRC configuration result and the NR RRC configuration result message.

In a fourth possible implementation manner, the difference from the second possible implementation manner is that, for the case that the LTE RRC entity fails to configure, the NR RRC entity stops configuring, and at this time, the LTE RRC configuration is completed or the LTE RRC configuration failure message may further carry a configuration failure indication message of the NR RRC entity. That is, in this implementation, the LTE RRC configuration result message includes a configuration failure indication message of the NR RRC entity in addition to the LTE RRC configuration result and the NR RRC configuration result message.

It should be noted that, in the above procedure, when the configuration of the LTE RRC entity in the user equipment is completed and the configuration of the NR RRC entity fails, the configuration of the LTE RRC entity is still performed.

S709: and the user equipment sends an LTE RRC configuration result message to the LTE base station.

The LTE RRC configuration result message may be an LTE RRC configuration failure message or an LTE RRC configuration complete message. The LTE RRC configuration result message further includes an NR RRC configuration result message. The NR RRC configuration result message may be an NR RRC configuration complete message or an NR RRC configuration failure message.

S710: the LTE base station receives an LTE RRC configuration result message from the user equipment.

S711: and the LTE base station analyzes the LTE RRC configuration result message, determines the configuration result of the LTE RRC entity and acquires the NR RRC configuration result message.

Specifically, the LTE base station parses the LTE RRC configuration result message, and determines whether the LTE RRC in the user equipment is successfully configured. The LTE base station does not parse the NR RRC configuration result message in the LTE RRC configuration result message.

It should be noted that, for the third possible implementation manner and the fourth possible implementation manner in S708, the LTE base station analyzes the LTE RRC configuration result message, may determine the configuration result of the LTE RRC entity and obtain the NRRRC configuration result message, and may determine the configuration result of the NR RRC according to the configuration state indication message of the NR RRC entity in the LTE RRC configuration result message.

S712: and the LTE base station sends the NR RRC configuration result message to the NR base station.

S713: the NR base station receives an NR RRC configuration result message from the LTE base station.

S714: and the NR base station analyzes the NR RRC configuration result message and determines a configuration state indication message of the NR RRC entity.

S715: and the NR base station sends the configuration state indication message of the NR RRC entity to the LTE base station.

S716: the LTE base station receives a configuration status indication message of the NR RRC entity from the NR base station.

S717: and the LTE base station determines the configuration result of the NR RRC entity according to the configuration state indication message of the NR RRC entity.

It should be noted that, for the third possible implementation manner and the fourth possible implementation manner in S708, S715-S717 need not be executed.

Specifically, in one scenario, in S711, the LTE base station determines that the configuration result of the LTE RRC entity is configuration complete, and in S717, the LTE base station determines that the configuration result of the NR RRC entity is configuration complete, and the user equipment may complete dual connectivity for data transmission. Taking downlink data transmission as an example, for example, the LTE base station may directly send part of the data to the user equipment, send other data to the NR base station, and send the data to the user equipment by the NR base station. Thus, the user equipment can obtain data from the LTE base station and the NR base station at the same time, and the throughput of the UE is improved.

In another scenario, in S711, the LTE base station determines that the configuration result of the LTE RRC entity is a configuration failure, and in S717, the LTE base station determines that the configuration result of the NR RRC entity is a configuration success, and for a first possible implementation manner in S708, the following steps need to be performed; in addition, in S711, if the LTE base station determines that the configuration result of the LTE RRC entity is a configuration failure, and the LTE base station determines that the configuration result of the NR RRC entity is a configuration success, for a third possible implementation manner in S708, the following steps also need to be performed:

s718: the LTE base station sends a release message to the user equipment.

Wherein the release message is used for instructing the user equipment to release the configuration of the NR side.

S719: the user equipment receives a release message from the LTE base station.

S720: and the user equipment releases the NR configuration according to the release message.

The execution of S718-S720 may enable the ue to save resources and improve the utilization of the ue resources.

It should be noted that, in the embodiment of the present invention, an LTE base station is taken as a main base station, and an NR base station is taken as an auxiliary base station, and it is understood that, when the NR base station is taken as the main base station and the LTE base station is taken as the auxiliary base station, the execution processes of the LTE base station and the NR base station in the above processes need to be interchanged, that is, the steps executed by the LTE base station in the above processes are changed to be executed by the NR base station, and the steps executed by the NR base station are changed to be executed by the LTE base station. Meanwhile, inside the user equipment, the execution processes of the LTE RRC entity and the NR RRC entity are interchanged, namely, the steps executed by the LTE RRC entity inside the user equipment are changed to be executed by the NR RRC entity, and the steps executed by the NR RRC entity are changed to be executed by the LTE RRC entity.

The dual connection method provided by the embodiment of the invention includes that an addition request message is sent to an NR base station through an LTE base station, the NR base station receives the addition request message sent by the LTE base station, the NR base station configures parameters for user equipment according to the addition request message, the NR base station sends an addition request confirmation message to the LTE base station, the LTE base station receives the addition request confirmation message sent by the NR base station, the LTE base station sends an LTE RRC message to the user equipment, the user equipment receives the LTE RRC message sent by the LTE base station, the user equipment executes the configuration of the LTE base station and the NR base station, the user equipment sends an LTE RRC configuration result message to the LTE base station, the LTE base station receives the LTE RRC configuration result message sent by the user equipment, the LTE base station analyzes the LTE RRC configuration result message, determines the configuration result of an LTE RRC entity and obtains the NR RRC configuration result message, and sends the NR RRC configuration result message to the, the NR base station receives an NR RRC configuration result message sent by the LTE base station, the NR base station analyzes the NR RRC configuration result message, and determines a configuration state indication message of an NR RRC entity, the NR base station sends the configuration state indication message of the NR RRC entity to the LTE base station, the LTE base station receives the configuration state indication message of the NR RRC entity sent by the NR base station, and the LTE base station determines the configuration result of the NR RRC entity according to the configuration state indication message of the NR RRC entity, so that after the user equipment realizes dual connection and data downlink, the LTE base station can directly send a part of data to the user equipment, send the other part of data to the NR base station, and send the other part of data to the user equipment through the NR base station, and the throughput of the user equipment is improved.

Fig. 8 is a schematic structural diagram of a base station according to a first embodiment of the present invention. As shown in fig. 8, the base station provided in the embodiment of the present invention includes: a first receiver 81, a first transmitter 82 and a processor 83.

A first receiver 81, configured to receive, from the controller to be accessed, parameters configured by the controller to be accessed for the user equipment.

The parameters comprise an access sequence, a channel for sending the access sequence, an uplink reference signal, a channel for sending the uplink reference signal, a period for sending the uplink reference signal and a DCID.

A first transmitter 82, configured to send a first connection reconfiguration message to the ue under the instruction of the processor 83, where the first connection reconfiguration message is used to instruct the ue to establish a connection with a controller to be accessed according to the parameters; wherein, the first connection reconfiguration message comprises parameters, and the base station and the user equipment have established connection.

Optionally, the first receiver 81 may be a communication interface, and the first transmitter 82 may be an antenna, a radio frequency unit, and the like.

The base station provided in the embodiment of the present invention may be specifically configured to execute the steps executed by the base station in the embodiment shown in fig. 2, and the technical principle and the implementation process thereof are similar and will not be described herein again.

The base station provided by the embodiment of the invention realizes that the first connection reconfiguration message is sent to the user equipment by setting the first receiver and the first transmitter, the user equipment can be configured in advance according to the parameters in the first connection reconfiguration message, and the user equipment is simultaneously accessed into the coverage area of the base station and the coverage area of the controller, so that the user equipment can conveniently interact with the core network through the base station, and the user equipment interacts with the core network through the base station and the controller, thereby improving the throughput of the user equipment.

Fig. 9 is a schematic structural diagram of a second base station according to an embodiment of the present invention. As shown in fig. 9, the base station provided in the embodiment of the present invention further includes, on the basis of fig. 8: a second receiver 91 and a second transmitter 92.

In a first implementation, the base station is co-sited with the controller to be accessed.

The first receiver 81 is also used to receive a first measurement report from a controller-managed transmission point TP to be accessed. The processor 83 is configured to determine a TP to be connected among the TPs according to the first measurement report. The first transmitter 82 is also configured to transmit a first add request message to the TP to be connected. The first addition request message is used for indicating that a tunnel is established for a bearer of the user equipment between the base station and the TP to be connected. The second receiver 91 is configured to receive, from the TP to be connected, a first addition request acknowledgement message sent by the TP to be connected according to the first addition request message. The first transmitter 82 is further configured to send a second connection reconfiguration message to the user equipment under the direction of the processor 83. The second connection reconfiguration message is used to instruct the ue to perform data transmission with the base station and the TP to be connected at the same time.

The base station provided by this implementation manner may be specifically configured to execute the steps executed by the base station in the embodiment shown in fig. 3, and the technical principle and the implementation process are similar and will not be described here again.

According to the base station provided by the implementation mode, when the base station and the controller to be accessed are co-located, the user equipment is accessed to the cell managed by the controller to be accessed through the TP to be connected, so that the user equipment can conveniently interact with the core network through the base station, and the user equipment interacts with the core network through the base station and the controller, and therefore the throughput of the user equipment is improved.

In a second implementation manner, the first connection reconfiguration message is further used to instruct the ue to perform data transmission simultaneously with the TP to be connected managed by the base station and the controller to be accessed. A second transmitter 92, configured to transmit a second addition request message to the controller to be accessed under the instruction of the processor 83. The second addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and for indicating that a tunnel is established for the bearer of the user equipment between the base station and the controller to be accessed. The first receiver 81 is specifically configured to: and receiving a second increase request confirmation message sent by the controller to be accessed according to the second increase request message from the controller to be accessed. Wherein the second addition request acknowledgement message includes a parameter.

The base station provided by this implementation manner may be specifically configured to execute the steps executed by the base station in the embodiment shown in fig. 4, and the technical principle and the implementation process are similar and will not be described here again.

In the base station provided by the implementation manner, the first connection reconfiguration message is used for instructing the user equipment to establish connection with the controller to be accessed according to the first connection reconfiguration message, and is also used for instructing the user equipment to simultaneously perform data transmission with the TP to be connected managed by the base station and the controller to be accessed, so that the first connection reconfiguration message has two functions, the signaling flow is saved, and the efficiency of dual connection is improved.

In a third implementation, the second transmitter 92 is further configured to transmit a third addition request message to the controller to be accessed under the instruction of the processor 83. The third addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and for indicating that a tunnel is established for the bearer of the user equipment between the base station and the controller to be accessed. The first receiver 81 is specifically configured to receive, from the controller to be accessed, a third addition request acknowledgement message sent by the controller to be accessed according to the third addition request message. Wherein the third addition request acknowledgement message includes a parameter. The second receiver 91 is also configured to receive a fourth addition request message from the controller-managed TP to be connected to be accessed. Wherein, the fourth addition request message is used to instruct to establish a tunnel for the bearer of the user equipment between the base station and the TP to be connected. The first transmitter 82 is further configured to transmit a third connection reconfiguration message to the user equipment under the instruction of the processor 83, where the third connection reconfiguration message is used to instruct the user equipment to perform data transmission with the base station and the TP to be connected at the same time.

The base station provided by this implementation manner may be specifically configured to execute the steps executed by the base station in the embodiment shown in fig. 5, and the technical principle and the implementation process are similar and will not be described here again.

The base station provided by the implementation mode can receive the third increase request message actively sent by the TP to be connected, so that after the user equipment realizes double connection and when data downlink transmission exists, the base station can directly send one part of data to the user equipment, send the other part of data to the TP to be connected, and send the other part of data to the user equipment by the TP to be connected, and the TP to be connected does not need to pass through a controller, so that network resources are saved, and the throughput of the user equipment is further improved.

In a fourth implementation, the second transmitter 92 is further configured to transmit a third addition request message to the controller to be accessed under the instruction of the processor 83. The third addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and for indicating that a tunnel is established for the bearer of the user equipment between the base station and the controller to be accessed. The first receiver 81 is specifically configured to receive, from the controller to be accessed, a third addition request acknowledgement message sent by the controller to be accessed according to the third addition request message; wherein the third addition request acknowledgement message includes a parameter. The first receiver 81 is also used to receive indication information from the controller to be accessed. The processor 83 is configured to determine a TP to be connected managed by the controller to be accessed according to the indication information. Wherein the indication information includes an identification of a candidate TP determined by the controller to be accessed. The first transmitter 82 is further configured to transmit a fourth addition request message to the TP to be connected under the direction of the processor 83. Wherein, the fourth addition request message is used to instruct to establish a tunnel for the bearer of the user equipment between the base station and the TP to be connected. The second receiver 91 is further configured to receive, from the TP to be connected, a fourth addition request acknowledgement message sent by the TP to be connected according to the fourth addition request message. The first transmitter 82 is further configured to transmit a third connection reconfiguration message to the user equipment. And the third connection reconfiguration message is used for instructing the user equipment to perform data transmission with the base station and the TP to be connected at the same time.

The base station provided by this implementation manner may be specifically configured to execute the steps executed by the base station in the embodiment shown in fig. 6, and the technical principle and the implementation process are similar and will not be described here again.

In the base station provided by the implementation manner, the processor can determine the TP to be connected according to the indication information sent by the controller to be accessed, and the first transmitter sends the fourth increase request message to the TP to be connected under the indication of the processor, so that after the user equipment realizes dual connection, when data downlink transmission exists, the base station can directly send a part of data to the user equipment, send the other part of data to the TP to be connected, and then send the TP to be connected to the user equipment without passing through the controller, thereby saving network resources and further improving the throughput of the user equipment.

Fig. 10 is a schematic structural diagram of a base station according to a third embodiment of the present invention. As shown in fig. 10, a base station provided in an embodiment of the present invention includes: a receiving module 101, a transmitting module 102 and a processing module 103.

The receiving module 101 is configured to receive, from a controller to be accessed, a parameter configured for a user equipment by the controller to be accessed. The parameters comprise an access sequence, a channel for sending the access sequence, an uplink reference signal, a channel for sending the uplink reference signal, a period for sending the uplink reference signal and a special connection identifier DCID.

The sending module 102 is configured to send a first connection reconfiguration message to the ue under the instruction of the processing module 103, where the first connection reconfiguration message is used to instruct the ue to establish a connection with a controller to be accessed according to the parameters. Wherein, the first connection reconfiguration message comprises parameters, and the base station and the user equipment have established connection.

The base station provided in the embodiment of the present invention may be specifically configured to execute the steps executed by the base station in the embodiments shown in fig. 2 to fig. 6, and the technical principle, implementation process, and technical effect of the base station are similar, which are not described herein again.

Fig. 11 is a schematic structural diagram of a controller according to a first embodiment of the present invention. As shown in fig. 11, the controller provided in the embodiment of the present invention includes: a processor 111 and a first transmitter 112.

A processor 111 configured to configure parameters for the user equipment.

The parameters comprise an access sequence, a channel for sending the access sequence, an uplink reference signal, a channel for sending the uplink reference signal, a period for sending the uplink reference signal and a special connection identifier DCID.

A first transmitter 112 for transmitting the parameters to the base station under the direction of the processor 111.

The controller is a controller to be accessed by user equipment, and the user equipment is connected with the base station.

Optionally, the first transmitter 112 in the embodiment of the present invention may be a communication interface.

The controller provided in the embodiment of the present invention may be specifically configured to execute steps executed by a controller to be accessed in the embodiment shown in fig. 2, and the technical principle and the implementation process of the controller are similar to each other, and are not described herein again.

In the base station provided by the embodiment of the invention, the processor is set to configure the parameters for the user equipment, and the first transmitter transmits the parameters to the base station under the instruction of the processor, so that the user equipment can be configured in advance according to the parameters in the first connection reconfiguration message, the user equipment can be simultaneously accessed to the coverage area of the base station and the coverage area of the controller, the user equipment can conveniently interact with the core network through the base station, and the user equipment interacts with the core network through the base station and the controller, thereby improving the throughput of the user equipment.

Fig. 12 is a schematic structural diagram of a second embodiment of the controller according to the present invention. As shown in fig. 12, the controller provided in the embodiment of the present invention further includes, on the basis of fig. 11: a second transmitter 113, a first receiver 114, and a second receiver 115.

In a first implementation manner, the first connection reconfiguration message is further used to instruct the ue to perform data transmission simultaneously with the TP to be connected managed by the base station and the controller to be accessed. A first receiver 114, configured to receive a second addition request message from the base station. The second addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and for indicating that a tunnel is established for the bearer of the user equipment between the base station and the controller to be accessed. The first transmitter 112 is specifically configured to transmit a second addition request acknowledgement message to the base station according to the second addition request message under the instruction of the processor. Wherein the second addition request acknowledgement message includes a parameter. And a second receiver 115 for receiving a second measurement report from a TP managed by the controller and determining a TP to be connected according to the second measurement report. A second transmitter 113 for transmitting the first configuration message to the TP to be connected. The first configuration information is used for indicating the TP to be connected to perform data transmission with the user equipment.

The controller provided by this implementation manner may be specifically configured to execute steps executed by the controller to be accessed in the embodiment shown in fig. 4, and the technical principle and the implementation process of the controller are similar and will not be described herein again.

In the controller provided by the implementation manner, the first connection reconfiguration message is used for instructing the user equipment to establish connection with the controller to be accessed according to the first connection reconfiguration message, and is also used for instructing the user equipment to simultaneously perform data transmission with the base station and the TP to be connected managed by the controller to be accessed, so that the first connection reconfiguration message has two functions, the signaling flow is saved, and the efficiency of dual connection is improved.

In a second implementation, the first receiver 114 is configured to receive a third addition request message from the base station. The third addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and for indicating that a tunnel is established between the base station and the controller to be accessed to the user equipment. The first transmitter 112 is specifically configured to transmit a third addition request acknowledgement message to the base station according to the third addition request message. Wherein the third addition request acknowledgement message includes a parameter. The second receiver 115 is also configured to receive a third measurement report from a TP managed by the controller. The processor 111 is further configured to determine a TP to be connected according to the third measurement report. The second transmitter 113 is further configured to transmit a second configuration message to the TP to be connected under the direction of the processor 111. The second configuration message includes an identifier of the base station, and the second configuration message is used to indicate the TP to be connected to perform data transmission with the user equipment.

The controller provided by this implementation manner may be specifically configured to execute steps executed by the controller to be accessed in the embodiment shown in fig. 5, and the technical principle and the implementation process of the controller are similar and will not be described herein again.

According to the controller provided by the implementation mode, after the user equipment realizes double connection, when data downlink transmission exists, the base station can directly send one part of data to the user equipment, send the other part of data to the TP to be connected, and then send the TP to be connected to the user equipment, and the user equipment does not need to pass through the controller, so that network resources are saved, and the throughput of the user equipment is further improved.

In a third implementation, the first receiver 114 is further configured to receive a third addition request message from the base station. The third addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and for indicating that a tunnel is established between the base station and the controller to be accessed to the user equipment. The first transmitter 112 is specifically configured to transmit a third addition request acknowledgement message to the base station according to the third addition request message under the instruction of the processor. Wherein the third addition request acknowledgement message includes a parameter. The second receiver 115 is further configured to receive a third measurement report from a TP managed by the controller, and determine a candidate TP based on the third measurement report. The first transmitter 112 is further configured to transmit indication information to the base station under the instruction of the processor 111. Wherein the indication information comprises an identification of the candidate TP.

The controller provided by this implementation manner may be specifically configured to execute steps executed by the controller to be accessed in the embodiment shown in fig. 6, and the technical principle and the implementation process of the controller are similar and will not be described herein again.

According to the controller provided by the implementation manner, the first transmitter can transmit the indication information to the base station, so that the base station determines the TP to be connected according to the indication information, and transmits the fourth increase request message to the TP to be connected, therefore, after the user equipment realizes dual connection, when data downlink transmission exists, the base station can directly transmit a part of data to the user equipment, transmit the other part of data to the TP to be connected, and transmit the other part of data to the user equipment through the TP to be connected without passing through the controller, so that network resources are saved, and the throughput of the user equipment is further improved.

Fig. 13 is a schematic structural diagram of a third embodiment of the controller according to the present invention. As shown in fig. 13, the controller provided in the embodiment of the present invention includes: a processing module 131 and a sending module 132.

The processing module 131 is configured to configure parameters for the user equipment.

A sending module 132, configured to send the parameter to the base station under the instruction of the processing module 131.

Optionally, the controller may further include a receiving module.

The controller provided in the embodiment of the present invention may be specifically configured to execute the steps executed by the controller in the embodiments shown in fig. 2 to fig. 6, and the technical principle, the implementation process, and the technical effect are similar and will not be described herein again.

Fig. 14 is a schematic structural diagram of a first user equipment embodiment provided in the embodiment of the present invention. As shown in fig. 14, the user equipment provided in the embodiment of the present invention includes: a receiver 141 and a processor 142.

A receiver 141 for receiving a first connection reconfiguration message from the base station.

The first connection reconfiguration message includes parameters configured for the user equipment by the controller to be accessed, and the parameters include an access sequence, a channel for transmitting the access sequence, an uplink reference signal, a channel for transmitting the uplink reference signal, a period for transmitting the uplink reference signal, and a DCID.

And the processor 142 is configured to establish a connection with the controller to be accessed according to the parameter in the first connection reconfiguration message. Wherein the user equipment has established a connection with the base station.

In one implementation, the user equipment further includes a transmitter.

The user equipment provided in the embodiment of the present invention may be specifically configured to execute the steps executed by the user equipment in the embodiments shown in fig. 2 to fig. 6, and the technical principle, implementation process, and technical effect are similar, which are not described herein again.

Fig. 15 is a schematic structural diagram of a second user equipment embodiment according to an embodiment of the present invention. As shown in fig. 15, the user equipment provided in the embodiment of the present invention includes: a receiving module 151 and a processing module 152.

A receiving module 151, configured to receive a first connection reconfiguration message from a base station.

And the processing module 152 is configured to establish a connection with the controller to be accessed according to the parameter in the first connection reconfiguration message. Wherein the user equipment has established a connection with the base station.

In one implementation, the user equipment further includes a sending module.

Fig. 16 is a schematic structural diagram of an LTE base station according to a first embodiment of the present invention. As shown in fig. 16, an LTE base station provided in an embodiment of the present invention includes: a first transmitter 161, a first receiver 162, a second transmitter 163, a second receiver 164, and a processor 165.

The first transmitter 161 is configured to transmit an increase request message to the NR base station under the direction of the processor 165.

The first receiver 162 is configured to receive an increase request acknowledgement message from the NR base station.

The second transmitter 163 is for transmitting an LTE RRC message to the user equipment under the direction of the processor 165.

The second receiver 164 is configured to receive an LTE RRC configuration result message from the user equipment.

The processor 165 is configured to parse the LTE RRC configuration result message, determine a configuration result of the LTE RRC entity, and obtain an NR RRC configuration result message.

The first transmitter 161 is further configured to transmit an NR RRC configuration result message to the NR base station under the direction of the processor 165.

The first receiver 162 is also configured to receive a configuration status indication message of the NR RRC entity from the NR base station.

The processor 165 is further configured to determine a configuration result of the NR RRC entity according to the configuration state indication message of the NR RRC entity.

The second transmitter 163 is further arranged to transmit a release message to the user equipment at the direction of the processor 165.

The LTE base station provided in the embodiment of the present invention may be specifically configured to execute the steps executed by the LTE base station in the embodiment shown in fig. 7, and the technical principle, implementation process, and technical effect of the LTE base station are similar and will not be described herein again.

Fig. 17 is a schematic structural diagram of a second LTE base station according to an embodiment of the present invention. As shown in fig. 17, an LTE base station provided in an embodiment of the present invention includes: a first transmitting module 171, a first receiving module 172, a second transmitting module 173, a second receiving module 174, and a processing module 175.

The first sending module 171 is configured to send an increase request message to the NR base station under the instruction of the processing module 175.

The first receiving module 172 is configured to receive an increase request acknowledgement message from the NR base station.

The second transmitting module 173 is configured to transmit the LTE RRC message to the user equipment under the instruction of the processing module 175.

The second receiving module 174 is configured to receive an LTE RRC configuration result message from the user equipment.

The processing module 175 is configured to parse the LTE RRC configuration result message, determine a configuration result of the LTE RRC entity, and obtain an NR RRC configuration result message.

The first transmitting module 171 is further configured to transmit an NR RRC configuration result message to the NR base station under the instruction of the processing module 175.

The first receiving module 172 is further configured to receive a configuration status indication message of the NR RRC entity from the NR base station.

The processing module 175 is further configured to determine a configuration result of the NR RRC entity according to the configuration status indication message of the NR RRC entity.

The second sending module 173 is further configured to send a release message to the user equipment under the instruction of the processing module 175.

Fig. 18 is a schematic structural diagram of an NR base station according to a first embodiment of the present invention. As shown in fig. 18, an NR base station according to an embodiment of the present invention includes: a receiver 181, a transmitter 182, and a processor 183.

The receiver 181 is configured to receive an addition request message from an LTE base station.

The processor 183 is configured to configure the parameters for the user equipment according to the addition request message.

The transmitter 182 is configured to transmit an addition request acknowledgement message to the LTE base station under the direction of the processor 183.

The receiver 181 is also configured to receive an NR RRC configuration result message from the LTE base station.

The processor 183 is further configured to parse the NR RRC configuration result message, and determine a configuration status indication message of the NR RRC entity.

The transmitter 182 is also configured to transmit a configuration status indication message of the NR RRC entity to the LTE base station under the instruction of the processor 183.

The NR base station provided in the embodiment of the present invention may be specifically configured to perform the steps performed by the NR base station in the embodiment shown in fig. 7, and the technical principle, the implementation process, and the technical effects are similar and will not be described herein again.

Fig. 19 is a schematic structural diagram of a second NR base station according to an embodiment of the present invention. As shown in fig. 19, an NR base station according to an embodiment of the present invention includes: a receiving module 191, a transmitting module 192, and a processing module 193.

The receiving module 191 is configured to receive an addition request message from the LTE base station.

The processing module 193 is configured to configure parameters for the ue according to the addition request message.

The sending module 192 is configured to send an addition request acknowledgement message to the LTE base station under the instruction of the processing module 193.

The receiving module 191 is further configured to receive an NR RRC configuration result message from the LTE base station.

The processing module 193 is further configured to parse the NR RRC configuration result message and determine a configuration status indication message of the NR RRC entity.

The transmitting module 192 is further configured to transmit a configuration status indication message of the NR RRC entity to the LTE base station at the indication of the processing module 193.

Fig. 20 is a schematic structural diagram of a first communication system according to an embodiment of the present invention. As shown in fig. 20, a communication system according to an embodiment of the present invention includes: user equipment 201, base station 202 and controller 203.

In the communication system provided by the embodiment of the present invention, the ue 201 receives the first connection reconfiguration message from the base station.

The user equipment 201 establishes connection with the controller to be accessed according to the parameters in the first connection reconfiguration message. Wherein the user equipment has established a connection with the base station.

The base station 202 receives the parameters configured for the user equipment by the controller to be accessed from the controller to be accessed.

The base station 202 sends a first connection reconfiguration message to the ue, where the first connection reconfiguration message is used to instruct the ue to establish a connection with a controller to be accessed according to the parameters. Wherein, the first connection reconfiguration message comprises parameters, and the base station and the user equipment have established connection.

The controller 203 configures parameters for the user equipment.

The controller 203 transmits the parameters to the base station. The controller is a controller to be accessed by user equipment, and the user equipment is connected with the base station.

The communication system provided by the embodiment of the present invention can be specifically used for executing the method embodiments shown in fig. 2 to fig. 6, and the technical principle, implementation process and technical effect thereof are similar and will not be described herein again.

Fig. 21 is a schematic structural diagram of a second communication system according to an embodiment of the present invention. As shown in fig. 21, a communication system according to an embodiment of the present invention includes: user equipment 210, LTE base station 211, and NR base station 212.

The user equipment 210 receives the LTE RRC message from the LTE base station 211, performs configuration of the LTE base station 211 and the NR base station 212, transmits an LTE RRC configuration result message to the LTE base station 211, and receives a release message from the LTE base station 211.

The LTE base station 211 may be the LTE base station shown in fig. 16 or fig. 17. The NR base station 212 may be the NR base station in fig. 18 or fig. 19.

The communication system provided in the embodiment of the present invention may be specifically configured to execute the method embodiment shown in fig. 7, and the technical principle, implementation process, and technical effect of the communication system are similar and will not be described herein again.

The processors and processing modules used to implement the base stations, user equipment and controllers described above in the present invention may be Central Processing Units (CPUs), general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, transistor logic devices, hardware components or any combinations thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the units or modules is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or modules may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.

The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.

Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dual connectivity method, comprising:

a base station receives parameters configured for user equipment by a controller to be accessed from the controller to be accessed; the parameters comprise an access sequence, a channel for sending the access sequence, an uplink reference signal, a channel for sending the uplink reference signal, a period for sending the uplink reference signal and a special connection identifier (DCID);

the base station sends a first connection reconfiguration message to the user equipment, wherein the first connection reconfiguration message is used for indicating the user equipment to establish connection with the controller to be accessed according to the parameters; wherein the first connection reconfiguration message includes the parameter, and the base station and the user equipment have established connection;

the base station and the controller to be accessed are co-located, or the base station and the controller to be accessed are not co-located, and an interface is arranged between the base station and the controller to be accessed;

after the base station transmits the first connection reconfiguration message to the user equipment, the method further includes:

the base station receives a first measurement report from a sending point TP managed by the controller to be accessed;

the base station determines TPs to be connected in the TPs according to the first measurement report;

the base station sends a first increase request message to the TP to be connected; wherein the first addition request message is used for indicating that a tunnel is established for a bearer of the user equipment between the base station and the TP to be connected;

the base station receives a first increase request confirmation message sent by the TP to be connected according to the first increase request message from the TP to be connected;

the base station sends a second connection reconfiguration message to the user equipment, wherein the second connection reconfiguration message is used for indicating the user equipment to simultaneously perform data transmission with the base station and the TP to be connected;

alternatively, the first and second electrodes may be,

the first connection reconfiguration message is further used for instructing the ue to perform data transmission with the base station and the TP to be connected managed by the controller to be accessed at the same time;

before the base station receives the parameters configured for the user equipment by the controller to be accessed from the controller to be accessed, the method further comprises the following steps:

the base station sends a second increase request message to the controller to be accessed; the second addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and indicating that a tunnel is established between the base station and the controller to be accessed to the bearer of the user equipment;

the base station receiving the parameters configured by the controller to be accessed for the user equipment from the controller to be accessed comprises the following steps:

the base station receives a second increase request confirmation message sent by the controller to be accessed according to the second increase request message from the controller to be accessed; wherein the second addition request acknowledgement message includes the parameter;

alternatively, the first and second electrodes may be,

the base station sends a third increase request message to the controller to be accessed; wherein, the third addition request message is used for instructing the controller to be accessed to configure parameters for the user equipment and instructing to establish a tunnel for a bearer of the user equipment between the base station and the controller to be accessed;

the base station receiving the parameters configured by the controller to be accessed for the user equipment from the controller to be accessed comprises the following steps: the base station receives a third increase request confirmation message sent by the controller to be accessed according to the third increase request message from the controller to be accessed; wherein the third addition request acknowledgement message includes the parameter;

the base station receives a fourth increase request message from the TP to be connected managed by the controller to be accessed; wherein the fourth addition request message is used to instruct establishment of a tunnel for a bearer of the user equipment between the base station and the TP to be connected;

the base station sends a third connection reconfiguration message to the user equipment, wherein the third connection reconfiguration message is used for indicating the user equipment to simultaneously perform data transmission with the base station and the TP to be connected;

alternatively, the first and second electrodes may be,

after the base station sends the first connection reconfiguration message to the user equipment, the method further includes:

the base station receives indication information from the controller to be accessed;

the base station determines the TP to be connected managed by the controller to be accessed according to the indication information; wherein the indication information includes an identification of a candidate TP, the candidate TP being determined by the controller to be accessed;

the base station sends a fourth increase request message to the TP to be connected; wherein the fourth addition request message is used to instruct establishment of a tunnel for a bearer of the user equipment between the base station and the TP to be connected;

the base station receives a fourth addition request confirmation message sent by the TP to be connected according to the fourth addition request message from the TP to be connected;

the base station sends a third connection reconfiguration message to the user equipment; wherein the third connection reconfiguration message is used to instruct the ue to perform data transmission with the base station and the TP to be connected at the same time.

2. A dual connectivity method, comprising:

the controller configures parameters for the user equipment; the parameters comprise an access sequence, a channel for sending the access sequence, an uplink reference signal, a channel for sending the uplink reference signal, a period for sending the uplink reference signal and a special connection identifier (DCID);

the controller sends the parameters to a base station; the controller is a controller to be accessed by the user equipment, and the user equipment and the base station are connected;

before the controller configures parameters for the user equipment, the method further includes:

the controller receiving a second addition request message from the base station; the second addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and indicating that a tunnel is established between the base station and the controller to be accessed to the bearer of the user equipment;

the controller sends the parameters to a base station, and the method comprises the following steps:

the controller sends a second increase request confirmation message to the base station according to the second increase request message; wherein the second addition request acknowledgement message includes the parameter;

the controller receives a second measurement report from the TP managed by the controller and determines a TP to be connected according to the second measurement report;

the controller sends a first configuration message to the TP to be connected; the first configuration message is used for indicating the TP to be connected to perform data transmission with the user equipment;

alternatively, the first and second electrodes may be,

before the controller configures parameters for the user equipment, the method further comprises:

the controller receiving a third addition request message from the base station; the third addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and indicating that a tunnel is established between the base station and the controller to be accessed to the user equipment;

the controller sends the parameters to a base station, and the method comprises the following steps: the controller sends a third addition request confirmation message to the base station according to the third addition request message; wherein the third addition request acknowledgement message includes the parameter;

the controller receives a third measurement report from the TP managed by the controller and determines a TP to be connected according to the third measurement report;

the controller sends a second configuration message to the TP to be connected; the second configuration message includes an identifier of the base station, and the second configuration message is used to indicate the TP to be connected to perform data transmission with the user equipment;

alternatively, the first and second electrodes may be,

the controller receiving a third measurement report from a TP managed by the controller and determining a candidate TP based on the third measurement report;

the controller sends indication information to the base station; wherein the indication information includes an identification of the candidate TP.

3. A base station, comprising:

the first receiver is used for receiving the parameters configured for the user equipment by the controller to be accessed from the controller to be accessed; the parameters comprise an access sequence, a channel for sending the access sequence, an uplink reference signal, a channel for sending the uplink reference signal, a period for sending the uplink reference signal and a special connection identifier (DCID);

a first transmitter, configured to send a first connection reconfiguration message to the ue under an instruction of a processor, where the first connection reconfiguration message is used to instruct the ue to establish a connection with the controller to be accessed according to the parameter; wherein the first connection reconfiguration message includes the parameter, and the base station and the user equipment have established connection;

the first receiver is further configured to receive a first measurement report from the controller-managed transmission point TP to be accessed;

the processor is configured to determine a TP of the TPs to be connected according to the first measurement report;

the first transmitter is further configured to transmit a first add request message to the TP to be connected; wherein the first addition request message is used for indicating that a tunnel is established for a bearer of the user equipment between the base station and the TP to be connected;

the base station further comprises: a second receiver, configured to receive, from the TP to be connected, a first addition request acknowledgement message sent by the TP to be connected according to the first addition request message;

the first transmitter is further configured to send, under the instruction of the processor, a second connection reconfiguration message to the ue, where the second connection reconfiguration message is used to instruct the ue to perform data transmission with the base station and the TP to be connected at the same time;

alternatively, the first and second electrodes may be,

the base station further comprises: a second transmitter, configured to transmit a second addition request message to the controller to be accessed under an instruction of the processor; the second addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and indicating that a tunnel is established between the base station and the controller to be accessed to the bearer of the user equipment;

the first receiver is specifically configured to: receiving a second increase request confirmation message sent by the controller to be accessed according to the second increase request message from the controller to be accessed; wherein the second addition request acknowledgement message includes the parameter;

alternatively, the first and second electrodes may be,

the base station further comprises a second transmitter for transmitting a third addition request message to the controller to be accessed under the instruction of the processor; wherein, the third addition request message is used for instructing the controller to be accessed to configure parameters for the user equipment and instructing to establish a tunnel for a bearer of the user equipment between the base station and the controller to be accessed;

the first receiver is specifically configured to receive, from the controller to be accessed, a third addition request acknowledgement message sent by the controller to be accessed according to the third addition request message; wherein the third addition request acknowledgement message includes the parameter;

the base station further includes a second receiver for receiving a fourth addition request message from the to-be-connected TP managed by the to-be-accessed controller; wherein the fourth addition request message is used to instruct establishment of a tunnel for a bearer of the user equipment between the base station and the TP to be connected;

the first transmitter is further configured to send, under the instruction of the processor, a third connection reconfiguration message to the ue, where the third connection reconfiguration message is used to instruct the ue to perform data transmission with the base station and the TP to be connected at the same time;

alternatively, the first and second electrodes may be,

the first receiver is further used for receiving indication information from the controller to be accessed;

the processor is used for determining the TP to be connected managed by the controller to be accessed according to the indication information; wherein the indication information includes an identification of a candidate TP, the candidate TP being determined by the controller to be accessed;

the first transmitter is further configured to transmit a fourth addition request message to the TP to be connected under the instruction of the processor; wherein the fourth addition request message is used to instruct establishment of a tunnel for a bearer of the user equipment between the base station and the TP to be connected;

the base station further comprises a second receiver, configured to receive, from the TP to be connected, a fourth addition request acknowledgement message sent by the TP to be connected according to the fourth addition request message;

the first transmitter is further configured to transmit a third connection reconfiguration message to the user equipment; wherein the third connection reconfiguration message is used to instruct the ue to perform data transmission with the base station and the TP to be connected at the same time.

4. A controller, comprising:

a processor configured to configure parameters for a user equipment; the parameters comprise an access sequence, a channel for sending the access sequence, an uplink reference signal, a channel for sending the uplink reference signal, a period for sending the uplink reference signal and a special connection identifier (DCID);

a first transmitter for transmitting the parameter to a base station under the instruction of the processor; the controller is a controller to be accessed by the user equipment, and the user equipment and the base station are connected;

the controller further includes: a first receiver for receiving a second addition request message from the base station; the second addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and indicating that a tunnel is established between the base station and the controller to be accessed to the bearer of the user equipment;

the first transmitter is specifically configured to transmit a second addition request acknowledgement message to the base station according to the second addition request message under the instruction of the processor; wherein the second addition request acknowledgement message includes the parameter;

a second receiver for receiving a second measurement report from a TP managed by the controller and determining a TP to be connected according to the second measurement report;

a second transmitter, configured to transmit a first configuration message to the TP to be connected; the first configuration information is used for indicating the TP to be connected to perform data transmission with the user equipment;

alternatively, the first and second electrodes may be,

the controller further comprises a first receiver for receiving a third addition request message from the base station; the third addition request message is used for indicating the controller to be accessed to configure parameters for the user equipment and indicating that a tunnel is established between the base station and the controller to be accessed to the user equipment;

the first transmitter is specifically configured to transmit a third addition request acknowledgement message to the base station according to the third addition request message; wherein the third addition request acknowledgement message includes the parameter;

the controller further includes a second receiver for receiving a third measurement report from the TP managed by the controller;

the processor is further configured to determine a TP to be connected according to the third measurement report;

the controller further comprises a second transmitter for transmitting a second configuration message to the TP to be connected under the instruction of the processor; the second configuration message includes an identifier of the base station, and the second configuration message is used to indicate the TP to be connected to perform data transmission with the user equipment;

or

the first transmitter is specifically configured to transmit, under the instruction of the processor, a third addition request acknowledgement message to the base station according to the third addition request message; wherein the third addition request acknowledgement message includes the parameter;

the controller further includes a second receiver for receiving a third measurement report from the TP managed by the controller and determining a candidate TP based on the third measurement report;

the first transmitter is further configured to transmit indication information to the base station under the instruction of the processor; wherein the indication information includes an identification of the candidate TP.