CN116762395A

CN116762395A - Connection establishment method, device, system and storage medium

Info

Publication number: CN116762395A
Application number: CN202180091954.6A
Authority: CN
Inventors: 黄钧蔚
Original assignee: Shenzhen Transsion Holdings Co Ltd
Current assignee: Shenzhen Transsion Holdings Co Ltd
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2023-09-15
Also published as: WO2022165704A1

Abstract

The application provides a connection establishment method, equipment, a system and a storage medium, wherein terminal equipment receives configuration information from a main node, the configuration information comprises auxiliary cell measurement parameters corresponding to at least one auxiliary node, connection is established with a target auxiliary node according to the configuration information, and the target auxiliary node is at least one of the auxiliary nodes. The application achieves the purpose of quickly establishing the connection between the terminal equipment and the corresponding auxiliary node (namely the target auxiliary node) by including the auxiliary cell measurement parameters corresponding to the auxiliary node in the configuration information.

Description

Connection establishment method, device, system and storage medium

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a connection establishment method, device, system and storage medium.

Background

In the DC (Dual Connectivity ) scenario, the terminal device establishes a connection with the primary node and the secondary node, respectively, for data transmission. The primary node and the secondary node may each configure a plurality of cells for the terminal device, including a primary cell and a secondary cell. The primary cell corresponding to the primary node is called a Pcell, and the primary cell corresponding to the secondary node is called a PScell (primary secondary cell).

Since the service cell corresponding to the terminal device is constantly changing, maintenance of the service cell of the terminal device is required. Aiming at the service cell of the auxiliary node in the DC scene, the current technology only relates to the addition and the change of the main and the auxiliary cells, and how to configure the auxiliary cell of the corresponding auxiliary node for the terminal equipment is a problem to be solved.

The foregoing description is provided for general background information and does not necessarily constitute prior art.

Disclosure of Invention

The embodiment of the application provides a connection establishment method, equipment, a system and a storage medium, which are used for configuring an auxiliary cell corresponding to an auxiliary node for terminal equipment and rapidly establishing connection between the terminal equipment and the corresponding auxiliary node.

In a first aspect, an embodiment of the present application provides a connection establishment method, applied to a terminal device, including the following steps: receiving configuration information, wherein the configuration information optionally comprises auxiliary cell measurement parameters corresponding to at least one auxiliary node; and establishing connection with a target auxiliary node according to the configuration information, wherein the target auxiliary node is at least one auxiliary node.

Optionally, the time point of receiving the configuration information includes at least one of:

when the main node instructs the terminal equipment to increase the main and auxiliary cells of the auxiliary node;

When the master node instructs the terminal device to replace the primary and secondary cells of the secondary node.

Optionally, the configuration information is carried by RRC (Radio Resource Control ) signaling.

Alternatively, the radio resource control signaling may be embodied as layer three radio resource control signaling.

Optionally, the secondary cell measurement parameters are provided by the corresponding secondary node.

Optionally, the step of establishing a connection with the target secondary node according to the configuration information includes:

measuring based on the auxiliary cell measurement parameters to obtain a measurement result;

performing evaluation of the auxiliary cell according to the measurement result to obtain an auxiliary cell evaluation result;

determining an auxiliary node of a main and auxiliary cell meeting preset execution conditions as a target auxiliary node;

and sending the secondary cell evaluation result to the target secondary node so as to establish connection with the target secondary node.

Optionally, the secondary cell evaluation result is carried by at least one of the following signaling: msgA, msg1, msg3 and radio resource control signaling.

Optionally, the method further comprises, before performing measurement based on the secondary cell measurement parameters to obtain a measurement result: the validity of the secondary cell measurement parameters is determined.

Optionally, establishing a connection with the target secondary node includes: and configuring the primary and secondary cells, and/or configuring the secondary cells.

Optionally, the terminal device uses a (New Radio) technology to access the primary node and/or the secondary node.

Optionally, after establishing connection with the target auxiliary node according to the configuration information, the connection establishment method further includes: sending uplink data; and/or receiving downlink data.

In a second aspect, an embodiment of the present application provides a connection establishment method, applied to a terminal device, including the following steps: receiving configuration information and obtaining a main node measurement result, wherein the configuration information comprises auxiliary cell measurement parameters corresponding to at least one auxiliary node; and establishing connection with a target auxiliary node according to the configuration information and the measurement result of the main node, wherein the target auxiliary node is at least one of the auxiliary nodes.

Optionally, the order of receiving configuration information and obtaining the master node measurement result includes at least one of:

firstly, receiving configuration information, and then, obtaining a main node measurement result;

and firstly acquiring a main node measurement result, and then receiving configuration information.

Optionally, obtaining the master node measurement result may include at least one of:

acquiring the signal intensity of a main cell of a main node;

acquiring the signal quality of a main cell of a main node;

and acquiring the signal-to-noise ratio of the main cell of the main node.

Optionally, establishing a connection with the target secondary node according to the configuration information and the primary node measurement result may include at least one of:

when the signal intensity of the main cell of the main node is larger than a first threshold value, establishing connection with a target auxiliary node according to configuration information;

when the signal quality of the main cell of the main node is greater than a second threshold value, establishing connection with a target auxiliary node according to configuration information;

when the signal-to-noise ratio of the main cell of the main node is larger than a third threshold value, establishing connection with a target auxiliary node according to configuration information;

when the primary cell of the primary node meets the event A1, establishing connection with a target auxiliary node according to configuration information;

when the primary cell of the primary node does not meet the event A2, connection is established with the target secondary node according to the configuration information.

Optionally, the time point of receiving the configuration information and obtaining the measurement result of the master node includes at least one of the following:

Optionally, the time point of acquiring the measurement result of the master node may further include at least one of the following:

before a main node instructs a terminal device to increase a main cell and a secondary cell of a secondary node;

After the master node instructs the terminal device to add the primary and secondary cells of the secondary node.

Optionally, establishing connection with the target auxiliary node according to the configuration information includes:

Optionally, the method further comprises at least one of:

the secondary cell evaluation result is carried by at least one of the following signaling: msgA, msg1, msg3 and radio resource control signaling;

based on the auxiliary cell measurement parameters, the method further comprises the following steps: determining the validity of the auxiliary cell measurement parameters;

establishing a connection with the target secondary node includes: and configuring the primary and secondary cells, and/or configuring the secondary cells.

Alternatively, the RRC signaling may be embodied as layer three RRC signaling.

Optionally, the terminal device accesses the primary node and/or the secondary node using the new radio technology.

Optionally, after establishing a connection with the target secondary node according to the configuration information and the primary node measurement result, at least one of the following is further included: sending uplink data; and receiving downlink data.

In a third aspect, an embodiment of the present application provides a connection establishment method, applied to a master node, including the following steps:

acquiring configuration information, wherein the configuration information comprises at least one auxiliary cell measurement parameter corresponding to an auxiliary node, and the configuration information is used for indicating terminal equipment to establish connection with a target auxiliary node according to the configuration information, and the target auxiliary node is at least one auxiliary node;

and sending configuration information.

Optionally, the time point of sending the configuration information includes at least one of the following:

when a main node instructs a terminal device to increase a main cell and an auxiliary cell of the auxiliary node;

and when the master node instructs the terminal equipment to replace the master cell and the slave cell of the slave node.

Optionally, the configuration information is carried through radio resource control signaling.

Optionally, the terminal device accesses the primary node and/or the secondary node using a new radio technology.

In a fourth aspect, an embodiment of the present application provides a connection establishment method, applied to a master node, including the following steps:

acquiring configuration information, wherein the configuration information comprises auxiliary cell measurement parameters corresponding to at least one auxiliary node, the configuration information is used for indicating terminal equipment to establish connection with a target auxiliary node according to the configuration information and a main node measurement result, and the target auxiliary node is at least one of the auxiliary nodes;

and sending configuration information.

Optionally, the master node measurement result includes at least one of:

the signal intensity of the main cell of the main node;

the signal quality of the main cell of the main node;

primary node primary cell signal to noise ratio.

Optionally, the sending configuration information includes at least one of:

Optionally, the configuration information is carried by radio resource control signaling.

In a fifth aspect, an embodiment of the present application provides a connection establishment method, applied to an auxiliary node, including the following steps:

receiving an auxiliary cell evaluation result, wherein the auxiliary cell evaluation result is obtained by the terminal equipment based on auxiliary cell measurement parameters from the main node;

and establishing connection with the terminal equipment according to the evaluation result of the auxiliary cell.

Optionally, establishing connection with the terminal device according to the secondary cell evaluation result, including:

configuring a primary cell and a secondary cell for terminal equipment;

and determining whether to configure the auxiliary cell for the terminal equipment according to the auxiliary cell evaluation result, and configuring the auxiliary cell for the terminal equipment when the auxiliary cell is determined to be configured for the terminal equipment.

Optionally, before receiving the secondary cell evaluation result, the method further includes: and sending the secondary cell measurement parameters to the master node.

Optionally, after establishing connection with the terminal device according to the secondary cell evaluation result, the connection establishment method further includes: receiving uplink data; and/or transmitting the downlink data.

Optionally, the time point of receiving the secondary cell evaluation result includes at least one of the following:

when the terminal equipment determines that the signal strength of the main cell of the main node is larger than a first threshold value;

when the terminal equipment determines that the signal quality of the main cell of the main node is larger than a second threshold value;

when the terminal equipment determines that the signal-to-noise ratio of the main cell of the main node is larger than a third threshold value;

when the terminal equipment determines that the main cell of the main node meets an event A1;

when the terminal device determines that the primary node primary cell does not satisfy event A2.

In a sixth aspect, an embodiment of the present application provides a connection establishment apparatus, applied to a terminal device, including:

the receiving and transmitting module is used for receiving configuration information, and the configuration information comprises auxiliary cell measurement parameters corresponding to at least one auxiliary node;

and the processing module is used for establishing connection with a target auxiliary node according to the configuration information, wherein the target auxiliary node is at least one auxiliary node.

In a seventh aspect, an embodiment of the present application provides a connection establishment apparatus, applied to a terminal device, including:

the receiving and transmitting module is used for receiving configuration information and acquiring a main node measurement result, wherein the configuration information comprises auxiliary cell measurement parameters corresponding to at least one auxiliary node;

And the processing module is used for establishing connection with a target auxiliary node according to the configuration information and the measurement result of the main node, wherein the target auxiliary node is at least one auxiliary node.

In an eighth aspect, an embodiment of the present application provides a connection establishment apparatus, applied to a master node, including:

the processing module is used for acquiring configuration information, the configuration information comprises auxiliary cell measurement parameters corresponding to at least one auxiliary node, the configuration information is used for indicating the terminal equipment to establish connection with a target auxiliary node according to the configuration information, and the target auxiliary node is at least one of the auxiliary nodes;

and the transceiver module is used for sending the configuration information.

In a ninth aspect, an embodiment of the present application provides a connection establishment apparatus, which is applied to a master node, including the following steps:

the processing module is used for acquiring configuration information, the configuration information comprises auxiliary cell measurement parameters corresponding to at least one auxiliary node, the configuration information is used for indicating the terminal equipment to establish connection with a target auxiliary node according to the configuration information and a main node measurement result, and the target auxiliary node is at least one of the auxiliary nodes;

and the transceiver module is used for sending the configuration information and the measurement result of the master node.

In a tenth aspect, an embodiment of the present application provides a connection establishment apparatus, which is applied to a secondary node, including:

The receiving and transmitting module is used for receiving an auxiliary cell evaluation result which is obtained by the terminal equipment based on the auxiliary cell measurement parameters from the main node;

and the processing module is used for establishing connection with the terminal equipment according to the evaluation result of the auxiliary cell.

In an eleventh aspect, an embodiment of the present application provides a communication device, including: a memory and a processor;

the memory is used for storing program instructions;

the processor is configured to invoke program instructions in the memory to perform the method as described in any of the above.

The communication device of the eleventh aspect may be a terminal device or a network device, or may be a chip of the terminal device or a chip of the network device.

In a twelfth aspect, an embodiment of the present application provides a communication system, including:

a terminal device for implementing a method as in any of the first or second aspects;

a master node for implementing a method as in any of the third or fourth aspects;

and a secondary node for implementing a method as in any of the fifth aspects.

In a thirteenth aspect, an embodiment of the present application provides a readable storage medium having a computer program stored thereon, which when executed, implements any of the methods described above.

In a fourteenth aspect, embodiments of the present application provide a computer program product comprising a computer program stored in a readable storage medium, from which a processor can read the computer program, the processor executing the computer program to perform any of the methods described above.

The application provides a connection establishment method, equipment, a system and a storage medium, wherein terminal equipment receives configuration information from a main node, the configuration information comprises auxiliary cell measurement parameters corresponding to at least one auxiliary node, connection is established with a target auxiliary node according to the configuration information, and the target auxiliary node is at least one of the auxiliary nodes. The configuration information comprises the auxiliary cell measurement parameters corresponding to the auxiliary node, namely, the auxiliary cell corresponding to the auxiliary node of the main and auxiliary cells is considered to be configured for the terminal equipment when the main and auxiliary cells are increased and changed, so that the connection between the terminal equipment and the corresponding auxiliary node (namely, the target auxiliary node) is quickly established.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

FIG. 1a is a schematic diagram of an EN-DC scenario;

FIG. 1b is a schematic diagram of a multi-radio dual connectivity scenario;

fig. 2 is a schematic flow chart of two-step random access;

fig. 3 is a schematic flow chart of four-step random access;

FIG. 4 is a schematic diagram of CPA flow;

fig. 5 is a schematic CPC flow chart under a primary-secondary cell change scenario between secondary nodes;

fig. 6 is a schematic CPC flow chart in a primary-secondary cell change scenario in a secondary node;

fig. 7 is a schematic diagram of a communication system according to an embodiment of the present application;

fig. 8 is a signaling interaction schematic diagram of a connection establishment method according to an embodiment of the present application;

fig. 9 is a signaling interaction schematic diagram of a connection establishment method according to another embodiment of the present application;

fig. 10 is a signaling interaction schematic diagram of a connection establishment method according to another embodiment of the present application;

fig. 11 is a schematic structural diagram of a connection establishment apparatus according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 13 is a schematic diagram of a hardware structure of a mobile terminal implementing various embodiments of the present application;

fig. 14 is a schematic diagram of a communication network system according to an embodiment of the present application.

The achievement of the objects, functional features and advantages of the present application will be further described with reference to the accompanying drawings, in conjunction with the embodiments. Specific embodiments of the present application have been shown by way of the above drawings and will be described in more detail below. The drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to the specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Firstly, explanation is made on nouns according to embodiments of the present application:

double connection: the terminal equipment is accessed to two different network equipment by adopting the same wireless access technology; alternatively, the terminal device uses two different radio access technologies to access one network device or two network devices simultaneously. Optionally, the connection established between the terminal device and the MN (Master Node) is referred to as MCG (Master Cell Group, primary cell group), and the primary cells in the primary cell group are referred to as PCell; the connection established between the terminal device and the SN (Secondary Node) is called SCG (Secondary Cell Group ), and the primary cell in the Secondary cell group is called PScell. There is a control plane link called Xn-C between the primary node and the secondary node and at least the primary node is connected to the core network via an interface NG-C.

The dual connection includes EN-DC (EUTRA-NR Dual Connectivity) and MR-DC (Multi-Radio Dual Connectivity), multi-radio dual connection.

FIG. 1a is a schematic diagram of an EN-DC scenario. As shown in fig. 1a, the terminal device accesses two base stations simultaneously through the interface Uu: meNB and SgNB. Optionally, the MeNB is a 4G base station providing S1-MME connectivity for the terminal device, connected to the 4G core network as a control plane anchor, assuming all control plane functions, and therefore also referred to as a master node; the SgNB is a 5G base station, there is no control plane link directly connected to the core network, there is a control plane link called X2-C between the SgNB and the MeNB, the SgNB does not assume the control plane function, and the interaction with the control plane of the core network is performed by means of the MeNB, so that it is called as a secondary node.

Fig. 1b is a schematic diagram of a multi-radio dual connectivity scenario. As shown in fig. 1b, the terminal device is configured to access two different nodes via the interface Uu, respectively, and to utilize resources provided by the two different nodes, one node providing NR access and the other node providing E-UTRA or NR access. Alternatively, one node acts as a master node and the other node acts as a slave node. The primary node and the secondary node are connected by a network interface and at least the primary node is connected to the core network. In NGEN-DC (NG-RAN E-UTRA-NR Dual Connectivity), the auxiliary node provides NR access, and the main node provides E-UTRA access; in NE-DC (NR-E-UTRA Dual Connectivity), a primary node provides NR access and a secondary node provides E-UTRA access; in NR-DC (NR-NR Dual Connectivity), both the primary node and the secondary node provide NR access.

In a multi-radio dual connection, the terminal device is configured with two medium access control entities: one medium access control entity for the primary cell group and another medium access control entity for the secondary cell group. The service units of the primary cell group other than the PCell can only be activated/deactivated by control elements in the medium access control protocol data units received on the primary cell group, and the service units of the secondary cell group (except the PSCell) can only be activated/deactivated by control elements in the medium access control protocol data units received on the secondary cell group.

RA (Random Access): refers to the procedure before attempting to access the network device from the time when the terminal device transmits the random access preamble sequence until a basic signaling connection is established with the network device. The terminal device may initiate random access in a number of possible scenarios. For example, after the state of the terminal device is switched from the idle state to the connection state, the terminal device initiates random access when establishing a wireless link process with the network device; or, when the state of the terminal equipment is switched from the inactive state to the connection state, initiating random access; alternatively, the terminal device initiates random access when performing a Handover procedure, a radio link procedure is established with a new target cell, etc.

The random access according to the embodiment of the present application may include two-step random access (may also be referred to as 2-step RA) and four-step random access (may also be referred to as 4-step RA), and in order to facilitate understanding, the procedure of the two-step random access and the four-step random access will be described in detail.

Fig. 2 is a schematic flow chart of two-step random access. Referring to fig. 2, the two-step random access may include:

s201, the terminal equipment sends MsgA to the network equipment.

Optionally, the MsgA comprises a random access preamble (preamble) and a payload (payload).

S202, the network equipment sends MsgB to the terminal equipment.

MsgB may be: contention resolution (Contention Resolution), fallback indication (Fallback Indication), or fallback indication (Backoff Indication), etc.

Fig. 3 is a schematic flow chart of four-step random access. Referring to fig. 3, the four-step random access may include:

s301, the terminal equipment sends Msg1 to the network equipment.

Alternatively, msg1 comprises: random access preamble, which may also be referred to as a random access preamble sequence, or preamble sequence.

S302, the network equipment sends Msg2 to the terminal equipment.

Alternatively, msg2 may be: random access response and/or back-off indication. The back-off indication is used to indicate the back-off time for retransmitting Msg1.

For CFRA (Contention Free Random Access, non-contention based random access), after the terminal device successfully receives Msg2, the random access procedure ends. For CBRA (Contention Based Random Access, contention-based random access), after the terminal device successfully receives Msg2, it also needs to continue to transmit Msg3 and receive Msg4.

S303, the terminal equipment sends Msg3 to the network equipment.

Alternatively, msg3 is the first scheduled transmission in the random access procedure, sending a payload (payload).

S304, the network equipment sends Msg4 to the terminal equipment.

Optionally, msg4 is used to indicate whether the terminal device successfully accesses the network device. Msg4 has the effect of resolving competing conflicts. Taking initial access as an example, the conflict is resolved by the terminal device receiving PDSCH (Physical Downlink Shared Channel ) of Msg4, serving data units (Service Data Unit, SDU) by matching CCCH (Common Control Channel ) in the physical downlink shared channel.

In the dual connectivity scenario, for the serving cell of the secondary node, the current technology involves the addition and change of the primary and secondary cells, i.e. CPA (Conditional PSCell Addition, conditional primary and secondary cell addition) and CPC (Conditional PSCell Change, conditional primary and secondary cell change), respectively, which are explained next.

1. Referring to fig. 4, the CPA process is described

S4-1, the terminal equipment sends an RRC measurement report to the master node.

And the terminal equipment is in a connection state relative to the main node, and is configured to measure the adjacent auxiliary node, and the terminal equipment reports the RRC measurement result to the main node.

S4-2: the master node decides to start the CPA procedure according to the RRC measurement report.

The master node then initiates an auxiliary node addition process with a set of candidate auxiliary nodes. Specifically:

s4-3, the master node sends a secondary node addition request (SN Addition Request) message to the candidate secondary nodes.

In this example, two candidate secondary nodes are illustrated, denoted as T-SN1 and T-SN2, respectively. The primary node sends secondary node addition request messages to the T-SN1 and the T-SN2, respectively. In response to the sending of the secondary node addition request, T-SN1 and T-SN2 generate a secondary node addition request acknowledgement (SN Addition Request Acknowledge) message in which the set of prepared candidate primary and secondary cells and data forwarding addresses for which the termination point to be newly added will extend from the primary node to the secondary node's data bearer are indicated.

S4-4, the candidate auxiliary node sends an auxiliary node addition request confirmation message to the main node.

S4-5, the master node sends RRC reconfiguration information to the terminal equipment.

After the primary node and the candidate secondary node confirm the candidate primary and secondary cells, the CPA configuration information is sent to the terminal device through an RRC reconfiguration (RRC Reconfiguration) message.

For example, the RRC reconfiguration message may include the following:

a) Candidate primary and secondary cells;

b) The terminal equipment accesses the execution conditions which need to be met by the candidate primary and secondary cells, and the execution conditions are determined by the primary node;

c) The primary cell group carries configuration information and the secondary cell group carries configuration information.

After receiving the RRC reconfiguration message, the terminal device checks whether the CPA configuration information is a valid configuration. If the CPA configuration information is valid, the terminal device performs S4-6.

S4-6, the terminal equipment sends an RRC reconfiguration complete (RRC Reconfiguration Complete) message to the master node.

S4-7, the terminal equipment evaluates whether the candidate primary and secondary cells meet corresponding execution conditions.

After receiving the RRC reconfiguration message, the terminal device starts to evaluate whether the candidate primary and secondary cells meet the corresponding execution conditions. When determining that a certain primary and secondary cell meets the execution condition, taking the primary and secondary cell as a target primary and secondary cell, the terminal equipment can stop evaluating other candidate primary and secondary cells and execute S4-8.

S4-8, the terminal equipment sends RRC reconfiguration completion information to the master node.

The RRC reconfiguration complete message carries information of the target primary and secondary cells. In this example, the selected target primary and secondary cells are denoted by T-PSCell1, and the target secondary node to which T-PSCell1 belongs is T-SN1.

After receiving the target primary and secondary cell acknowledgement information sent by the terminal equipment, the primary node starts to make connection establishment preparation with the target secondary node and waits for the terminal equipment to initiate random access.

S4-9, the master node sends a secondary node reconfiguration complete (SN Reconfiguration Complete) message to the target secondary node.

S4-10, S4-11, the master node forwards the secondary node state newly added data to the data bearers of the target secondary node, the termination point of which extends from the master node to the target secondary node, and data forwarding (data forwarding) of the bearers is started by using the data forwarding address provided by S4-3.

S4-12, the terminal equipment executes random access to the target primary and secondary cells.

This step may be performed in parallel with S4-8 to S4-11.

S4-13, the network performs a path adding process including path adding on the data bearer extending from the main node to the target auxiliary node by the terminal equipment.

CPC

CPC can be subdivided into primary node initiated or secondary node initiated and/or can divide two scenarios, intra-secondary node primary-secondary cell change (Intra-SN PSCell change) and Inter-secondary node primary-secondary cell change (Inter-SN PSCell change). The main and auxiliary cell change in the auxiliary node and the main and auxiliary cell change between the auxiliary nodes are different in that: the former is to change the main and auxiliary cells in the same auxiliary node; the latter is a primary and secondary cell change of a different secondary node.

Referring to fig. 5, an example of a primary-secondary cell change (Inter-SN PScell change) scenario between secondary nodes is described, where CPC is initiated by a secondary node.

S5-1, the terminal equipment sends an RRC measurement report to an S-SN (Source-SN, source auxiliary node).

And the terminal equipment operates in a DC scene and is configured to measure the main node and the auxiliary node.

S5-2, the source auxiliary node decides to start the CPC procedure according to the RRC measurement report.

S5-3, the source auxiliary node sends an auxiliary node change request message to the main node.

The auxiliary node change request message is used for indicating the main node to start the CPC program and carries information of T-SN (Target-SN) and measurement results. In this example, the candidate secondary nodes include T-SN1 and T-SN2.

S5-4, the master node sends a secondary node addition request (SN Addition Request) message to the candidate secondary nodes.

The secondary node addition request message is used to initiate a secondary node addition procedure.

S5-5, the master node receives a secondary node addition request acknowledgement (SN Addition Request Acknowledge) message from the candidate secondary nodes.

In the secondary node addition request acknowledgement message, each candidate secondary node indicates a set of candidate primary and secondary cells and data forwarding addresses to be set for data bearers terminated in the candidate secondary node to provide data forwarding addresses for indirect data forwarding (via the primary node) and direct data forwarding.

S5-6, the master node sends RRC reconfiguration (RRC Reconfiguration) information to the terminal equipment.

Optionally, the RRC reconfiguration message includes the following:

a) Candidate primary and secondary cells;

c) The primary cell group bearer configuration information and the secondary cell group bearer configuration information comprise radio bearer configurations used after the terminal equipment accesses the primary cell and the secondary cell.

After receiving the RRC reconfiguration message, the terminal device checks whether the CPC configuration information is a valid configuration. If the CPC configuration information is valid, the terminal device performs S5-7.

S5-7, the terminal equipment sends an RRC reconfiguration complete (RRC Reconfiguration Complete) message to the master node.

S5-8, the terminal equipment evaluates whether the candidate primary and secondary cells meet corresponding execution conditions.

After receiving the RRC reconfiguration message, the terminal device starts to evaluate whether the candidate primary and secondary cells meet the corresponding execution conditions. When determining that a certain primary and secondary cell meets the execution condition, taking the primary and secondary cell as a target primary and secondary cell, the terminal equipment can stop evaluating other candidate primary and secondary cells and execute S5-9.

S5-9, the terminal equipment sends an RRC reconfiguration completion message to the master node.

S5-10, the main node sends a secondary node change confirmation (SN Change Confirm) message to the source secondary node.

The secondary node change confirmation message carries information of the selected target secondary node, such as a data forwarding address provided by the target secondary node (T-SN 1) and an indirect data forwarding address of the secondary node. And the source auxiliary node releases resources for the terminal equipment after receiving the auxiliary node change confirmation message.

S5-11, the master node sends a secondary node reconfiguration complete (RRC Reconfiguration Complete) message to the T-SN1.

S5-12a, S5-12b, source auxiliary node and main node send auxiliary node state transition to target auxiliary node to data bearing of terminal equipment located in target auxiliary node.

S5-13a and S5-13b, and using the data forwarding addresses provided in S5-5 and S5-10, initiates data forwarding for the bearer.

S5-12a and S5-13a show indirect data forwarding, and S5-12b and S5-13b show direct data forwarding.

S5-14, the terminal equipment executes random access to the target primary and secondary cells.

This step may be performed in parallel with S5-9 to S5-13.

S5-15, the network executes a path updating process, which comprises path switching of a data bearer for moving the terminal equipment from the main node or the source auxiliary node to the target auxiliary node.

S5-16, the main node instructs the source auxiliary node to release the terminal equipment context.

Referring to fig. 6, an example of a CPC initiated by a secondary node is illustrated with respect to a primary-secondary cell change (Intra-SN PSCell change) scenario within the secondary node.

S6-1, the terminal equipment sends an RRC measurement report to the auxiliary node.

S6-2, the auxiliary node decides to start the CPC procedure according to the RRC measurement report.

S6-3, the auxiliary node sends an auxiliary node modification request message to the main node.

Illustratively, the secondary node change requirement message includes a set of candidate primary and secondary cells and CPC execution conditions to be satisfied by each candidate primary and secondary cell.

S6-4, the master node sends a secondary node modification request (SN Modification Request) message to the secondary node.

The master node initiates the secondary node modification procedure by sending a secondary node modification request message, which may include information such as its own address for data forwarding purposes and for coordination with the measurement gaps of the secondary node, according to the information contained in the secondary node modification request message.

S6-5, the auxiliary node sends an auxiliary node modification request acknowledgement (SN Modification Request Acknowledge) message to the main node.

S6-6, the master node sends RRC reconfiguration (RRC Reconfiguration) information to the terminal equipment.

Optionally, the RRC reconfiguration message includes the following:

a) Candidate primary and secondary cells provided by the secondary node;

After receiving the RRC reconfiguration message, the terminal device checks whether the CPC configuration information is a valid configuration. If the CPC configuration information is valid, the terminal device performs S6-7.

S6-7, the terminal equipment sends an RRC reconfiguration complete (RRC Reconfiguration Complete) message to the master node.

S6-8, the terminal equipment evaluates whether the candidate primary and secondary cells meet corresponding execution conditions.

After receiving the RRC reconfiguration message, the terminal device starts to evaluate whether the candidate primary and secondary cells meet the corresponding execution conditions. When determining that a certain primary and secondary cell meets the execution condition, taking the primary and secondary cell as a target primary and secondary cell, the terminal equipment can stop evaluating other candidate primary and secondary cells and execute S6-8.

S6-9, the terminal equipment sends an RRC reconfiguration completion message to the master node.

S6-10, the master node sends a secondary node modification confirmation (SN Modification Confirm) message to the secondary node.

Optionally, the secondary node modification confirmation message includes an RRC reconfiguration complete message provided by the terminal device, as a response message to the secondary node, indicating that the terminal device successfully applies the configuration.

S6-11, performing auxiliary node state transition and data forwarding among auxiliary nodes.

S6-12, the terminal equipment executes random access to the target primary and secondary cells.

This step may be performed in parallel with S6-9 to S6-11.

S6-13, the network executes a path update process, including path switching of the data bearer moved by the terminal equipment.

In summary, as is known from the above description about CPC and CPA, in the current technical solution, only the primary and secondary cells of the secondary node are discussed, but the secondary cell (SCell) of the secondary node is not considered.

Based on the above problems, the present application provides a connection establishment method, device, system and storage medium, which are designed for CPC scenarios and/or CPA scenarios, and consider configuring an auxiliary cell of an auxiliary node for a terminal device, so as to achieve the purpose of quickly establishing connection between the terminal device and the auxiliary node, so as to satisfy the design concept of URLLC (Ultra Reliable Low Latency Communications, high reliability and low latency communication).

The connection establishment method provided by the embodiment of the application can be applied to the communication system architecture schematic diagram shown in fig. 7. As shown in fig. 7, the communication system includes: AMF/UPF, access network equipment and terminal equipment. Optionally, the access network device includes: a first base station and a second base station. Illustratively, the first base station and the second base station are both base stations of the NR system. In the scenario shown in fig. 7, the first base station and the second base station share one AMF/UPF, alternatively, the first base station and the AMF (Access and Mobile Management Function, access and mobility management function)/UPF (User Plane Function ) are connected through an interface NG-C, the first base station and the second base station are connected through an interface Xn-C, and the terminal device accesses the first base station and the second base station simultaneously. Of course, in other scenarios, the first base station and the second base station may also have separate AMFs/UPFs, which are not limited in this embodiment of the present application.

It should be noted that the communication system shown in fig. 7 may be applicable to different network systems, for example, GSM (Global System of Mobile communication, global system for mobile communications), CDMA (Code Division Multiple Access ), WCDMA (Wideband Code Division Multiple Access, wideband code Division multiple access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, time Division synchronous code Division multiple access), long term evolution system, and future 5G network systems. Alternatively, the communication system may be a system in a scenario of high reliability and low latency communication in a 5G communication system.

The terminal device may be a wireless terminal device or a wired terminal device. The wireless terminal device can be a device with wireless receiving and transmitting function, which can be deployed on land, including indoor or outdoor, hand-held or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.). The terminal device may be a mobile phone (mobile phone), a tablet (Pad), a computer with a wireless transceiving function, a VR (Virtual Reality) terminal device, an AR (Augmented Reality ) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned driving (self driving), a wireless terminal device in remote medical (remote medical), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in smart city (smart city), a wireless terminal device in smart home (smart home), a wearable device, and the like, which are not limited herein. It will be appreciated that in the embodiment of the present application, the Terminal device may also be referred to as a Mobile Terminal (Mobile Terminal), a UE (User Equipment), a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile Station), a Mobile Station (Mobile), a Remote Station (Remote Station), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), or a User Agent (User Agent), which are not limited herein.

The network device, also called RAN (radio access network ) device, is a device for accessing a terminal device to a wireless network, and may be an evolved base station (evolutional node B, eNB or eNodeB) in an LTE system, or a relay station or an access point, or a base station in a 5G network, such as a transmitting and receiving point (transmission and reception point, TRP), a controller, or the like, which is not limited herein.

In a specific implementation, the following embodiments of the present application may be applied, for example, to the following scenarios:

when a user powers on and starts the terminal equipment, a large amount of data transmission requirements can be generated after the terminal equipment is accessed to the network, and the network side can be rapidly increased according to a strategy after the terminal equipment is connected with the main node and enables the auxiliary node to be connected so as to accelerate the data transmission quantity to achieve better user experience. The strategy is to simultaneously configure the terminal equipment to evaluate the corresponding secondary cell when evaluating the primary and secondary cells to be newly added. And when confirming that the primary and secondary cells are to be added, the terminal equipment provides the corresponding secondary cell evaluation results, so that the secondary node can rapidly configure the secondary cells according to the secondary cell evaluation results, and the number of terminal equipment connections is increased to achieve the effect of rapidly transmitting data.

Or when the user is in a continuously moving state, for example, in the process of taking a high-speed rail by the user, the terminal equipment carried by the user is likely to undergo a cell switching process, for example, in the cell switching process, the terminal equipment is transmitting a large amount of data, for example, the user is browsing videos or playing games, and the like, and if the terminal equipment fails to switch the cells rapidly, the phenomenon of data blocking can be caused, so that the user experience is affected. According to the scheme of the application, the corresponding auxiliary cells can be rapidly configured while the primary and the auxiliary cells are rapidly switched, and the number of connections is rapidly recovered to meet the user demands, so that the user experience is improved.

The following describes embodiments of the present application and how the technical solutions of the present application solve the above technical problems in detail. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.

Fig. 8 is a signaling interaction schematic diagram of a connection establishment method according to an embodiment of the present application. As shown in fig. 8, the connection establishment method of the present embodiment includes the steps of:

S00, acquiring configuration information, wherein the configuration information comprises auxiliary cell measurement parameters corresponding to at least one auxiliary node.

Optionally, the master node obtains configuration information, where the configuration information is used to instruct the terminal device to establish a connection with the target auxiliary node. Alternatively, the master node may obtain stored configuration information from within it; or, the master node may obtain configuration information from other external devices, and may specifically set according to actual requirements, which is not limited in the embodiments of the present application.

Optionally, the secondary cell measurement parameters are provided by the corresponding secondary node. For example, secondary cell measurement parameters of secondary node SN1 are provided by secondary node SN1, secondary cell measurement parameters of secondary node SN2 are provided by secondary node SN2, and so on. The secondary cell measurement parameters may include, for example, in particular a measurement configuration (MeasConfig) and a measurement object (MeasObjectNR). Illustratively, the measurement configuration includes a measurement threshold indicating whether the terminal device needs to make relevant neighbor cell measurements and a trigger reporting threshold. Illustratively, the measurement configuration may also contain measurement report trigger events (events), serving cell and/or neighbor cell and/or foreign system cell events, etc. may be distinguished still further. For specific reference, reference is made to the related art, and details thereof are not repeated herein.

After that, the master node performs S10.

S10, sending configuration information.

For example, referring to the CPA procedure shown in fig. 4, when the master node decides to start the CPA procedure according to the RRC measurement report reported by the terminal device, the master node sends an RRC reconfiguration message to the terminal device, and in this scenario, the configuration information in step S10 may be specifically carried by the RRC reconfiguration message in the CPA procedure. The difference from the RRC reconfiguration message in fig. 4 is that: the configuration information in the embodiment of the application comprises the auxiliary cell measurement parameters corresponding to the auxiliary node.

Alternatively, the configuration information in this step may be carried specifically by an RRC reconfiguration message in the CPC procedure as shown in fig. 5 or fig. 6. The difference from the RRC reconfiguration message in fig. 5 or 6 is that: the configuration information in the embodiment of the application comprises the auxiliary cell measurement parameters corresponding to the auxiliary node.

That is, the transmission/reception time point of the above configuration information may include at least one of:

Alternatively, the configuration information may be carried by radio resource control signaling, considering that the terminal device is in a connected state with respect to the master node. The above examples are described by taking the RRC reconfiguration message carrying the configuration information mentioned in the embodiments of the present application as an example, but it should be noted that the present application is not limited thereto, and alternatively, the configuration information may also be carried by other radio resource control signaling, for example, radio resource control signaling received by the terminal device before reporting the RRC measurement report.

Accordingly, the terminal device performs S20.

S20, receiving configuration information.

After receiving the configuration information, the terminal device performs step S30.

S30, establishing connection with a target auxiliary node according to the configuration information, wherein the target auxiliary node is at least one of the auxiliary nodes.

Because the configuration information contains the auxiliary cell measurement parameter corresponding to at least one auxiliary node, the terminal equipment can evaluate the auxiliary cell of the target auxiliary node together in the process of establishing connection with the target auxiliary node according to the configuration information, so that the auxiliary cell of the target auxiliary node is quickly configured for the terminal equipment, and the data transmission delay is further reduced.

In the embodiment of the application, the terminal equipment receives configuration information from the main node, the configuration information comprises auxiliary cell measurement parameters corresponding to at least one auxiliary node, and connection is established with a target auxiliary node according to the configuration information, and the target auxiliary node is at least one of the auxiliary nodes. The configuration information comprises the auxiliary cell measurement parameters corresponding to the auxiliary node, namely, the auxiliary cell corresponding to the auxiliary node of the main and auxiliary cells is considered to be configured for the terminal equipment when the main and auxiliary cells are increased and changed, so that the connection between the terminal equipment and the corresponding auxiliary node (namely, the target auxiliary node) is quickly established.

On the basis of the foregoing embodiment, optionally, the configuration information may include at least one of a primary cell measurement parameter corresponding to the primary node, a secondary cell measurement parameter corresponding to the at least one secondary node, and a primary and secondary cell measurement parameter corresponding to the at least one secondary node. The following situations can be distinguished:

the configuration information only includes the primary cell measurement parameters corresponding to the primary node. At this time, the configuration information is used to instruct the terminal device to evaluate the connection state with the master node.

Or, the configuration information only comprises the primary and secondary cell measurement parameters corresponding to at least one secondary node. At this time, the configuration information is used to instruct the terminal device to establish a connection with the target secondary node, as in the embodiment shown in fig. 4 or fig. 5 or fig. 6.

Or, the configuration information only includes the secondary cell measurement parameters corresponding to the at least one secondary node. At this time, the configuration information is used to instruct the terminal device to establish a connection with the target secondary node, as in the embodiment shown in fig. 8.

Or, the configuration information includes secondary cell measurement parameters corresponding to the primary node. At this time, the configuration information is used to instruct the terminal device to evaluate the connection state with the master node.

Or the configuration information comprises a primary cell measurement parameter corresponding to the primary node and a secondary cell measurement parameter corresponding to the primary node. At this time, the configuration information is used to instruct the terminal device to evaluate the connection state with the master node.

Or the configuration information comprises a primary cell measurement parameter corresponding to the primary node and a primary and secondary cell measurement parameter corresponding to at least one secondary node. At this time, the configuration information is used to instruct the terminal device to evaluate the connection state with the primary node and establish connection with the target secondary node.

Or the configuration information comprises a main cell measurement parameter corresponding to the main node and a secondary cell measurement parameter corresponding to at least one secondary node. At this time, the configuration information is used to instruct the terminal device to evaluate the connection state with the primary node and establish connection with the target secondary node.

Or the configuration information comprises the auxiliary cell measurement parameters corresponding to the main node and the main and auxiliary cell measurement parameters corresponding to at least one auxiliary node. At this time, the configuration information is used to instruct the terminal device to evaluate the connection state with the primary node and establish connection with the target secondary node.

Or the configuration information comprises the auxiliary cell measurement parameters corresponding to the main node and the auxiliary cell measurement parameters corresponding to at least one auxiliary node. At this time, the configuration information is used to instruct the terminal device to evaluate the connection state with the primary node and establish connection with the target secondary node.

Or the configuration information comprises a primary and secondary cell measurement parameter corresponding to at least one secondary node and a secondary cell measurement parameter corresponding to at least one secondary node. At this time, the configuration information is used to instruct the terminal device to establish connection with the target auxiliary node.

Or the configuration information comprises the measurement parameters of the primary cell corresponding to the primary node, the measurement parameters of the secondary cell corresponding to the primary node and the measurement parameters of the primary and secondary cells corresponding to the at least one secondary node. At this time, the configuration information is used to instruct the terminal device to evaluate the connection state with the primary node and establish connection with the target secondary node.

Or the configuration information comprises the measurement parameters of the main cell corresponding to the main node, the measurement parameters of the auxiliary cell corresponding to the main node and the measurement parameters of the auxiliary cell corresponding to at least one auxiliary node. At this time, the configuration information is used to instruct the terminal device to evaluate the connection state with the primary node and establish connection with the target secondary node.

Or the configuration information comprises the measurement parameters of the main cell corresponding to the main node, the measurement parameters of the main and auxiliary cells corresponding to the at least one auxiliary node and the measurement parameters of the auxiliary cell corresponding to the at least one auxiliary node. At this time, the configuration information is used to instruct the terminal device to evaluate the connection state with the primary node and establish connection with the target secondary node.

Or the configuration information comprises the auxiliary cell measurement parameters corresponding to the main node, the main and auxiliary cell measurement parameters corresponding to the at least one auxiliary node and the auxiliary cell measurement parameters corresponding to the at least one auxiliary node. At this time, the configuration information is used to instruct the terminal device to evaluate the connection state with the primary node and establish connection with the target secondary node.

Optionally, the primary and secondary cell measurement parameters are provided by the corresponding secondary node.

Fig. 9 is a signaling interaction schematic diagram of a connection establishment method according to another embodiment of the present application. As shown in fig. 9, on the basis of the flow shown in fig. 8, optionally, step S30 may include:

and S31, measuring based on the auxiliary cell measurement parameters to obtain a measurement result.

S32, carrying out evaluation of the auxiliary cell according to the measurement result to obtain an auxiliary cell evaluation result.

S33, determining the auxiliary node of the primary and auxiliary cells meeting the preset execution conditions as a target auxiliary node.

S34, sending the auxiliary cell evaluation result to the target auxiliary node.

The terminal equipment sends the auxiliary cell evaluation result to the target auxiliary node so as to establish connection with the target auxiliary node. Correspondingly, the target secondary node performs the following procedure:

s40, receiving the evaluation result of the auxiliary cell.

S50, establishing connection with the terminal equipment according to the evaluation result of the auxiliary cell.

In this embodiment, the terminal device evaluates both the primary and secondary cells according to the configuration information. After confirming that the primary and secondary cells meet preset execution conditions, starting to establish connection with a target secondary node corresponding to the primary and secondary cells, and carrying secondary cell evaluation results or measurement results of the target secondary node. And sending the evaluation result of the auxiliary cell to the target auxiliary node in the initial stage of establishing connection between the terminal equipment and the target auxiliary node, so as to help the target auxiliary node to rapidly configure the auxiliary cell.

Optionally, the secondary cell evaluation result may be the secondary cell indication information, and optionally, the secondary cell indication information may be information used to identify a secondary cell in the measurement parameter.

Alternatively, the measurement result may be RSRP (Reference Signal Received Power ), RSRQ (Reference Signal Received Quality, reference Signal received quality), SINR (Signal-to-noise and Interference Ratio), or a measurement report trigger event measured by the secondary cell.

Still referring to the flow shown in fig. 4, fig. 5 or fig. 6, while the terminal device evaluates the candidate primary and secondary cells to determine the target primary and secondary cells, the secondary cell evaluation is performed based on the measurement result obtained by the secondary cell measurement parameters, so as to obtain the secondary cell evaluation result. And after determining that the auxiliary node of the main and auxiliary cells meeting the preset execution conditions is a target auxiliary node, sending an auxiliary cell evaluation result corresponding to the target auxiliary node so as to enable the target auxiliary node to determine whether to configure the auxiliary cell for the terminal equipment based on the auxiliary cell evaluation result.

Optionally, the establishing connection between the terminal device and the target auxiliary node includes: the target auxiliary node configures a primary and secondary cell for the terminal equipment, and/or the target auxiliary node configures a secondary cell for the terminal equipment. When the target auxiliary node determines that the auxiliary cell is not configured for the terminal equipment based on the auxiliary cell evaluation result, establishing connection between the terminal equipment and the target auxiliary node comprises: the target auxiliary node configures a main and auxiliary cell for the terminal equipment; or when the target auxiliary node determines to configure the auxiliary cell for the terminal device based on the auxiliary cell evaluation result, establishing connection between the terminal device and the target auxiliary node includes: the target auxiliary node configures a primary and secondary cell for the terminal equipment, and/or the target auxiliary node configures a secondary cell for the terminal equipment.

Optionally, the secondary cell evaluation result may be carried by at least one of the following signaling: msgA, msg1, msg3 and radio resource control signaling. In one implementation, the terminal device sends the secondary cell evaluation result to the target secondary node in the random access phase, for example, through MsgA as shown in fig. 2, or Msg1 or Msg3 as shown in fig. 3; in another implementation, the terminal device sends the secondary cell evaluation result in a first radio resource control signaling after completing the random access, such as a radio resource control connection reestablishment (rrcsetup request) signaling or a radio resource control connection reestablishment complete (rrcsetup complete) signaling, and so on.

Alternatively, the random access information carries the cell evaluation result, and the corresponding secondary cell indication information indicates the secondary cell meeting the evaluation condition.

Optionally, the method of carrying the cell evaluation result by the random access information may be a transmission method or a carrying method carried in the random access preamble, the MsgA transmitted in the uplink data of the PUSCH, or a new definition, which is not limited in the present application.

Optionally, before the terminal device performs measurement based on the secondary cell measurement parameter to obtain a measurement result, the connection establishment method may further include: the validity of the secondary cell measurement parameters is determined. For specific implementation, reference may be made to the related art, and details are not repeated here. Optionally, if the terminal device cannot follow at least one measurement parameter in the configuration information, the terminal device does not perform cell measurement at this time, that is, the configuration information is invalid, and performs RRC link reestablishment procedure or returns to an IDLE state (also referred to as IDLE state or rrc_idle); if the terminal device follows all measurement parameters in the configuration information, the terminal device performs cell measurements at this time, i.e. the configuration information is valid.

Optionally, the terminal device accesses the primary node and/or the secondary node using NR technology. For example, the terminal device accesses the master node using NR technology; or the terminal equipment adopts NR technology to access the auxiliary node; or the terminal equipment adopts NR technology to access the main node and the auxiliary node.

Optionally, before step S40, the connection establishment method may further include: the secondary node sends secondary cell measurement parameters to the primary node.

It should be added that the above embodiments are mainly used to illustrate the differences between the present application and the present technology, and as for other parts not mentioned, reference may be made to the present CPC procedure or CPA procedure, as shown in fig. 4 or fig. 5 or fig. 6, for example.

Alternatively, the process of establishing the connection with the target secondary node by the terminal device may be the following two cases:

1. a random access procedure and a procedure of establishing a DRB (Data Radio Bearer );

2. a random access procedure, a procedure to establish an SRB (Signaling Radio Bearer ), and a procedure to establish a DRB (Data Radio Bearer ).

And after the terminal equipment establishes the connection with the target auxiliary node, data transmission can be performed, so that the time delay of the data transmission is reduced.

Thus, for the terminal device, after step S30, the connection establishment method further comprises at least one of the following:

Sending uplink data;

and receiving downlink data.

When the terminal equipment has uplink data to be transmitted, the uplink data is sent to a main node and/or an auxiliary node; and/or the terminal equipment receives the downlink data from the main node and/or the auxiliary node.

For the secondary node, after step S50, the connection establishment method further comprises at least one of:

receiving uplink data;

and sending downlink data.

When the auxiliary node has downlink data to be transmitted, the downlink data is sent to the terminal equipment; and/or the auxiliary node receives the uplink data from the terminal equipment.

Fig. 10 is a signaling interaction schematic diagram of a connection establishment method according to another embodiment of the present application. As shown in fig. 10, the connection establishment method of the present embodiment includes the steps of:

s101, a master node acquires configuration information, wherein the configuration information comprises auxiliary cell measurement parameters corresponding to at least one auxiliary node.

Optionally, the master node acquires configuration information, where the configuration information is used to instruct the terminal device to establish connection with a target auxiliary node according to the configuration information and the measurement result of the master node, and the target auxiliary node is at least one of the auxiliary nodes. Alternatively, the master node may obtain stored configuration information from within it; or, the master node may obtain configuration information from other external devices, and may specifically set according to actual requirements, which is not limited in the embodiments of the present application.

After that, the master node performs step S102.

S102, the master node sends configuration information.

Accordingly, the terminal device performs S103, receives the configuration information.

For example, referring to the CPA procedure shown in fig. 4, when the master node decides to start the CPA procedure according to the RRC measurement report reported by the terminal device, the master node sends an RRC reconfiguration message to the terminal device, where in this scenario, the configuration information may be specifically carried by the RRC reconfiguration message in the CPA procedure. The difference from the RRC reconfiguration message in fig. 4 is that: the configuration information in the embodiment of the application comprises the auxiliary cell measurement parameters corresponding to the auxiliary node.

S104, the terminal equipment acquires a main node measurement result.

Acquiring signal strength (RSRP) of a main cell of a main node;

acquiring primary node primary cell signal quality (RSRQ);

a primary node primary cell signal to noise ratio (SINR) is obtained.

Optionally, similar to the point in time when the terminal device receives the configuration information, the point in time when the terminal device obtains the measurement result of the master node may include at least one of the following:

Optionally, the time point when the terminal device obtains the measurement result of the master node may further include at least one of the following:

For example, before the primary node instructs the terminal device to increase the primary and secondary cells of the secondary node, the terminal may perform measurements on the primary node and send the measurement results before step S101.

For example, after the primary node instructs the terminal device to increase the primary and secondary cells of the secondary node, it may be determined that the connection between the terminal and the primary node is still in a stable state after step S104 and before step S105, while ensuring that the configuration of the secondary node and its secondary cell is still effective, and the secondary node should not be separated from the primary node to cause a difference, so that an unnecessary connection establishment request is formed to cause power consumption.

For example, referring to the CPA process shown in fig. 4, when the master node decides to start the CPA procedure according to the RRC measurement report reported by the terminal device, the master node sends an RRC reconfiguration message to the terminal device, and in this scenario, the acquisition of the measurement result of the master node may be specifically performed when the master node instructs the terminal device to increase the primary and secondary cells of the secondary node, or before the master node instructs the terminal device to increase the primary and secondary cells of the secondary node, or after the master node instructs the terminal device to increase the primary and secondary cells of the secondary node.

S105, the terminal equipment establishes connection with the target auxiliary node according to the configuration information and the measurement result of the main node.

Optionally, the step may include at least one of:

when the signal quality of the main cell of the main node is larger than a second threshold value, establishing connection with a target auxiliary node according to configuration information;

when the primary cell of the primary node meets an Event A1 (Event A1), establishing connection with a target auxiliary node according to configuration information;

When the primary cell of the primary node does not meet the Event A2 (Event A2), connection is established with the target secondary node according to the configuration information.

For example, if in step S104, the terminal device obtains the signal strength of the primary cell of the primary node, then in step S105, the terminal device establishes a connection with the target secondary node according to the configuration information when the signal strength of the primary cell of the primary node is greater than the first threshold; or,

if the terminal equipment obtains the signal quality of the main cell of the main node in the step S104, in the step S105, the terminal equipment establishes connection with the target auxiliary node according to the configuration information when the signal quality of the main cell of the main node is greater than a second threshold value; or,

if the signal-to-noise ratio of the main cell of the main node is obtained by the terminal equipment in the step S104, in the step S105, the terminal equipment establishes connection with the target auxiliary node according to the configuration information when the signal-to-noise ratio of the main cell of the main node is greater than a third threshold; or,

if in step S104 the terminal device obtains the signal strength of the primary cell of the primary node and the signal quality of the primary cell of the primary node, in step S105 the terminal device establishes a connection with the target secondary node according to the configuration information when the signal strength of the primary cell of the primary node is greater than a first threshold value and/or the signal quality of the primary cell of the primary node is greater than a second threshold value; or,

If in step S104 the terminal device obtains the signal strength of the primary cell of the primary node and the signal-to-noise ratio of the primary cell of the primary node, in step S105 the terminal device establishes a connection with the target secondary node according to the configuration information when the signal strength of the primary cell of the primary node is greater than a first threshold value and/or the signal-to-noise ratio of the primary cell of the primary node is greater than a third threshold value; or,

if in step S104 the terminal device obtains the signal quality of the primary cell of the primary node and the signal-to-noise ratio of the primary cell of the primary node, in step S105 the terminal device establishes a connection with the target secondary node according to the configuration information when the signal quality of the primary cell of the primary node is greater than a second threshold value and/or the signal-to-noise ratio of the primary cell of the primary node is greater than a third threshold value; or,

when a main cell of a main node meets an Event A1 (Event A1), the terminal equipment establishes connection with a target auxiliary node according to configuration information; or,

and when the primary cell of the primary node does not meet the Event A2 (Event A2), the terminal equipment establishes connection with the target auxiliary node according to the configuration information.

Optionally, as shown in fig. 9, establishing a connection with the target secondary node according to the configuration information may include:

S34, sending the auxiliary cell evaluation result to the target auxiliary node.

s40, receiving the evaluation result of the auxiliary cell.

Alternatively, the time point of transmitting/receiving the secondary cell evaluation result may include at least one of:

2. a random access procedure, a procedure to establish an SRB (Sigaling Radio Bearer, signaling radio bearer), and a procedure to establish a DRB (Data Radio Bearer ).

Thus, for the terminal device, after step S105, the connection establishment method further comprises at least one of the following:

Sending uplink data;

and receiving downlink data.

receiving uplink data;

and sending downlink data.

Any of the above embodiments may be implemented alone or in combination with at least two of the above embodiments, and is not limited thereto.

It will be appreciated that in the various embodiments described above, the operations and steps performed by the terminal device may also be performed by components (e.g., chips or circuits) that may be used in the terminal device, which are not limited by the embodiments of the present application. The operations and steps performed by the network device (including the primary node and the secondary node) may also be performed by components (e.g., chips or circuits) for the network device, which are not limited by the embodiments of the present application.

Fig. 11 is a schematic structural diagram of a connection establishment apparatus according to an embodiment of the present application. As shown in fig. 11, the connection establishment apparatus 60 of the present embodiment includes: a transceiver module 61 and a processing module 62. The connection establishment device 60 of the present embodiment may implement a scheme of the terminal device or the master node or the auxiliary node in any of the above embodiments through the transceiver module 61 and the processing module 62, and its implementation principle and technical effects are similar, and will not be repeated here.

In one implementation, the connection establishment means 60 may be a terminal device, a component of a terminal device (e.g. an integrated circuit, a chip, etc.), or another communication module, for implementing the operations corresponding to the terminal device in any of the above embodiments.

In another implementation, the connection establishment apparatus 60 may be a master node, or may be a component (e.g., an integrated circuit, a chip, etc.) of the master node, or may be another communication module for implementing the operations corresponding to the network device in any of the embodiments described above.

In yet another implementation, the connection establishment apparatus 60 may be a secondary node, a component (e.g., an integrated circuit, a chip, etc.) of the secondary node, or another communication module for implementing the operations corresponding to the network device in any of the above embodiments.

Fig. 12 is a schematic structural diagram of a communication device according to an embodiment of the present application. As shown in fig. 12, the communication device 80 according to this embodiment may be the terminal device (or a component usable for the terminal device) or the master node (or a component usable for the master node) or the slave node (or a component usable for the slave node) mentioned in the foregoing method embodiment. The communication device 80 may be used to implement the method described in the above method embodiments corresponding to the terminal device or the network device, see in particular the description in the above method embodiments.

The communication device 80 may comprise one or more processors 81, which processors 81 may also be referred to as processing units, which may perform certain control or processing functions. The processor 81 may be a general purpose processor or a special purpose processor or the like. For example, a baseband processor, or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control the communication device, execute software programs, and process data of the software programs.

Optionally, the processor 81 may also have instructions 83 or data (e.g., intermediate data) stored therein. Alternatively, the instructions 83 may be executable by the processor 81 to cause the communication device 80 to perform the method described in the above method embodiments corresponding to the terminal device or the network device.

Alternatively, the communication device 80 may comprise circuitry that may implement the functions of transmitting or receiving or communicating in the foregoing method embodiments.

Optionally, the communication device 80 may include one or more memories 82, on which instructions 84 may be stored, which instructions may be executed on the processor 81, to cause the communication device 80 to perform the methods described in the method embodiments above.

Alternatively, the memory 82 may have data stored therein. The processor 81 and the memory 82 may be provided separately or may be integrated.

Optionally, the communication device 80 may also include a transceiver 85 and/or an antenna 86. The processor 81 may be referred to as a processing unit controlling the communication device 80 (terminal device or core network device or radio access network device). The transceiver 85 may be referred to as a transceiver unit, a transceiver circuit, a transceiver, etc. for implementing the transceiver function of the communication device 80.

Alternatively, if the communication device 80 is used to implement the operation corresponding to the terminal device in the above embodiments, for example, the processor 81 may acquire the secondary node activation condition parameter; and/or triggering the transceiver 85 to send an auxiliary node activation request according to a preset rule according to the auxiliary node activation condition parameters so as to obtain an auxiliary node activation response; and activating the connection between the terminal equipment and the auxiliary node according to the auxiliary node activation response.

Optionally, the specific implementation process of the processor 81 and the transceiver 85 may be referred to the related description of the above embodiments, which is not repeated herein.

Alternatively, if the communication device 80 is used to implement the operation corresponding to the network device in the above embodiments, for example: the secondary node activation request may be received by transceiver 85. The processor 81 may generate an auxiliary node activation response according to the auxiliary node activation request, and trigger the transceiver 85 to send the auxiliary node activation response; and/or activating the connection of the terminal equipment and the auxiliary node according to the auxiliary node activation response.

The processor 81 and transceiver 85 described in the present application may be implemented on an IC (Integrated Circuit ), analog integrated circuit, RFIC (Radio Frequency Integrated Circuit ), mixed signal integrated circuit, ASIC (Application Specific Integrated Circuit ), PCB (Printed Circuit Board, printed circuit board), electronic device, or the like. The processor 81 and transceiver 85 may also be fabricated using various integrated circuit process technologies such as CMOS (Complementary Metal Oxide Semiconductor ), NMOS (N-Metal-Oxide-Semiconductor), PMOS (Positive channel Metal Oxide Semiconductor, P-Metal Oxide Semiconductor), BJT (Bipolar Junction Transistor ), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), and the like.

Although in the above description of the embodiment, the communication device is described by taking a terminal device or a network device as an example, the scope of the communication device described in the present application is not limited to the above terminal device or network device (including a master node and a slave node), and the structure of the communication device may not be limited by fig. 12. The communication device may be a stand-alone device or may be part of a larger device.

The embodiment of the application also provides a communication system, which comprises: the terminal device in any of the above method embodiments; the master node in any of the method embodiments above; and, the secondary node in any of the method embodiments above.

The present application also provides a communication device comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the method as described above.

The embodiment of the application also provides a readable storage medium, and the readable storage medium stores a computer program which realizes the method when being executed.

The present embodiments also provide a program product comprising a computer program code for causing a computer to perform the method as described in the various possible embodiments above when the computer program code is run on the computer.

The embodiment of the application also provides a chip, which comprises a memory and a processor, wherein the memory is used for storing a computer program, and the processor is used for calling and running the computer program from the memory, so that a device provided with the chip executes the method in the various possible implementation modes.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the modules is merely a logical function division, and there may be other manners of division in actual implementation, for example, multiple modules may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or modules, which may be in electrical, mechanical, or other forms.

The modules described as separate components may or may not be physically separate, and components shown as modules may or may not be physical units, may be located in one place, or may be distributed over multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

Alternatively, each functional module in the embodiments of the present application may be integrated in one processing unit, or each module may exist alone physically, or two or more modules may be integrated in one unit. The units formed by the modules can be realized in a form of hardware or a form of hardware and software functional units.

The integrated modules, which are implemented in the form of software functional modules, may be stored in a computer readable storage medium. The software functional module is stored in a storage medium, and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (english: processor) to perform some of the steps of the methods according to the embodiments of the application.

The storage medium may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC (Application Specific Integrated Circuits, application specific integrated circuit). The processor and the storage medium may reside as discrete components in a device.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the element defined by the phrase "comprising one … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element, and furthermore, elements having the same name in different embodiments of the application may have the same meaning or may have different meanings, the particular meaning of which is to be determined by its interpretation in this particular embodiment or by further combining the context of this particular embodiment.

It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope herein. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context. Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes," and/or "including" specify the presence of stated features, steps, operations, elements, components, items, categories, and/or groups, but do not preclude the presence, presence or addition of one or more other features, steps, operations, elements, components, items, categories, and/or groups. The terms "or", "and/or", "including at least one of", and the like, as used herein, may be construed as inclusive, or mean any one or any combination. For example, "including at least one of: A. b, C "means" any one of the following: a, A is as follows; b, a step of preparing a composite material; c, performing operation; a and B; a and C; b and C; a and B and C ", again as examples," A, B or C "or" A, B and/or C "means" any of the following: a, A is as follows; b, a step of preparing a composite material; c, performing operation; a and B; a and C; b and C; a and B and C). An exception to this definition will occur only when a combination of elements, functions, steps or operations are in some way inherently mutually exclusive.

It should be understood that, although the steps in the flowcharts in the embodiments of the present application are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited in order and may be performed in other orders, unless explicitly stated herein. Moreover, at least some of the steps in the figures may include multiple sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, the order of their execution not necessarily occurring in sequence, but may be performed alternately or alternately with other steps or at least a portion of the other steps or stages.

The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrase "if determined" or "if detected (stated condition or event)" may be interpreted as "when determined" or "in response to determination" or "when detected (stated condition or event)" or "in response to detection (stated condition or event), depending on the context.

It should be noted that, in this document, step numbers such as S10 and S20 are adopted, and the purpose of the present application is to more clearly and briefly describe the corresponding content, and not to constitute a substantial limitation on the sequence, and those skilled in the art may execute S20 first and then execute S10 when implementing the present application, which is within the scope of protection of the present application.

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

In the following description, suffixes such as "module", "part" or "unit" for representing elements are used only for facilitating the description of the present application, and have no specific meaning per se. Thus, "module," "component," or "unit" may be used in combination.

The terminal device may be implemented in various forms. For example, the terminal devices described in the present application may include mobile terminals such as cell phones, tablet computers, notebook computers, palm computers, personal digital assistants (Personal Digital Assistant, PDA), portable media players (Portable Media Player, PMP), navigation devices, wearable devices, smart bracelets, pedometers, and fixed terminals such as digital TVs, desktop computers, and the like.

The description will be given herein taking a mobile terminal as an example, and those skilled in the art will understand that the configuration according to the embodiment of the present application can be applied to a fixed type terminal in addition to elements particularly used for a moving purpose.

Referring to fig. 13, which is a schematic diagram of a hardware structure of a mobile terminal implementing various embodiments of the present application, the mobile terminal 90 may include: an RF (Radio Frequency) unit 91, a WiFi module 92, an audio output unit 93, an a/V (audio/video) input unit 94, a sensor 95, a display unit 96, a user input unit 97, an interface unit 98, a memory 99, a processor 100, and a power source 101. Those skilled in the art will appreciate that the mobile terminal structure shown in fig. 13 is not limiting of the mobile terminal and that the mobile terminal may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.

The following describes the components of the mobile terminal in detail with reference to fig. 13:

the radio frequency unit 91 may be used for receiving and transmitting signals during the process of receiving and transmitting information or communication, specifically, receiving downlink information of the base station, and then processing the downlink information for the processor 100; optionally, the uplink data is sent to the base station. Typically, the radio frequency unit 91 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 91 may also communicate with networks and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication, global System for Mobile communications), GPRS (General Packet Radio Service ), CDMA2000 (Code Division Multiple Access, CDMA 2000), WCDMA (Wideband Code Division Multiple Access ), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, time Division synchronous code Division multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution, frequency Division Duplex Long term evolution), and TDD-LTE (Time Division Duplexing-Long Term Evolution, time Division Duplex Long term evolution), etc.

WiFi belongs to a short-distance wireless transmission technology, and a mobile terminal can help a user to send and receive emails, browse webpages, access streaming media and the like through the WiFi module 92, so that wireless broadband Internet access is provided for the user. Although fig. 13 shows a WiFi module 92, it is understood that it does not belong to the necessary constitution of the mobile terminal, and can be omitted entirely as required within the scope of not changing the essence of the invention.

The audio output unit 93 may convert audio data received by the radio frequency unit 91 or the WiFi module 92 or stored in the memory 99 into an audio signal and output as sound when the mobile terminal 90 is in a call signal receiving mode, a talk mode, a recording mode, a voice recognition mode, a broadcast receiving mode, or the like. Also, the audio output unit 93 may also provide audio output (e.g., a call signal reception sound, a message reception sound, etc.) related to a specific function performed by the mobile terminal 90. The audio output unit 93 may include a speaker, a buzzer, and the like.

The a/V input unit 94 is used to receive audio or video signals. The a/V input unit 94 may include a GPU (Graphics Processing Unit, graphics processor) 941 and a microphone 942, the graphics processor 941 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 96. The image frames processed by the graphics processor 941 may be stored in memory 99 (or other storage medium) or transmitted via the radio frequency unit 91 or the WiFi module 92. The microphone 942 may receive sound (audio data) via the microphone 942 in a phone call mode, a recording mode, a voice recognition mode, and the like operation mode, and may be capable of processing such sound into audio data. The processed audio (voice) data may be converted into a format output that can be transmitted to the mobile communication base station via the radio frequency unit 91 in the case of a telephone call mode. Microphone 942 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated during the reception and transmission of audio signals.

The mobile terminal 90 also includes at least one sensor 95, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 961 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 961 and/or backlight when the mobile terminal 90 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the acceleration in all directions (generally three axes), and can detect the gravity and direction when stationary, and can be used for applications of recognizing the gesture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and knocking), and the like; as for other sensors such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc. that may also be configured in the mobile phone, the detailed description thereof will be omitted.

The display unit 96 is used to display information input by a user or information provided to the user. The display unit 96 may include a display panel 961, and the display panel 961 may be configured in the form of an LCD (Liquid Crystal Display ), an OLED (Organic Light-Emitting Diode), or the like.

The user input unit 97 may be used to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the mobile terminal. Alternatively, the user input unit 97 may include a touch panel 971 and other input devices 972. The touch panel 971, also referred to as a touch screen, may collect touch operations thereon or thereabout by a user (e.g., operations of the user on the touch panel 971 or thereabout by using any suitable object or accessory such as a finger, a stylus, etc.), and drive the corresponding connection device according to a predetermined program. The touch panel 971 may include two parts, a touch detection device and a touch controller. Optionally, the touch detection device detects the touch azimuth of the user, detects a signal brought by touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, and sends the touch point coordinates to the processor 100, and can receive and execute commands sent from the processor 100. In addition, the touch panel 971 may be implemented in various types of resistive, capacitive, infrared, surface acoustic wave, and the like. In addition to the touch panel 971, the user input unit 97 may include other input devices 972. Alternatively, other input devices 972 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, mouse, joystick, etc., as is not limited in this regard.

Alternatively, the touch panel 971 may overlay the display panel 961, and when the touch panel 971 detects a touch operation thereon or thereabout, the touch operation is transmitted to the processor 100 to determine the type of touch event, and the processor 100 then provides a corresponding visual output on the display panel 961 according to the type of touch event. Although in fig. 13, the touch panel 971 and the display panel 961 are two independent components for implementing the input and output functions of the mobile terminal, in some embodiments, the touch panel 971 may be integrated with the display panel 961 to implement the input and output functions of the mobile terminal, which is not limited herein.

The interface unit 98 serves as an interface through which at least one external device is connected to the mobile terminal 90. For example, the external devices may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 98 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile terminal 90 or may be used to transmit data between the mobile terminal 90 and an external device.

The memory 99 may be used to store software programs as well as various data. The memory 99 may mainly include a storage program area and a storage data area, and alternatively, the storage program area may store an operating system, an application program required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the handset, etc. In addition, memory 99 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.

The processor 100 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by running or executing software programs and/or modules stored in the memory 99 and calling data stored in the memory 99, thereby performing overall monitoring of the mobile terminal. Processor 100 may include one or more processing units; preferably, the processor 100 may integrate an application processor and a modem processor, the application processor optionally handling primarily an operating system, user interface and application programs, etc., the modem processor handling primarily wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 100.

The mobile terminal 90 may also include a power supply 101 (e.g., a battery) for powering the various components, and preferably the power supply 101 may be logically coupled to the processor 100 via a power management system that performs functions such as managing charge, discharge, and power consumption.

Although not shown in fig. 13, the mobile terminal 90 may further include a bluetooth module or the like, which will not be described herein.

In order to facilitate understanding of the embodiments of the present application, a communication network system on which the mobile terminal of the present application is based will be described below.

Referring to fig. 14, fig. 14 is a schematic diagram of a communication network system according to an embodiment of the present application, where the communication network system is an LTE system of a general mobile communication technology, and the LTE system includes a UE (User Equipment) 11, an e-UTRAN (Evolved UMTS Terrestrial Radio Access Network ) 12, an epc (Evolved Packet Core, evolved packet core) 13, and an IP service 14 of an operator, which are sequentially connected in communication.

Alternatively, the UE11 may be the mobile terminal 90 described above, which is not described herein.

The E-UTRAN 12 includes eNodeB 121 and other eNodeBs 122, etc. Alternatively, the eNodeB 121 may connect with other enodebs 122 through a backhaul (e.g., X2 interface), the eNodeB 121 is connected to the EPC 13, and the eNodeB 121 may provide access by the UE11 to the EPC 13.

EPC 13 may include MME (Mobility Management Entity ) 131, hss (Home Subscriber Server, home subscriber server) 132, other MMEs 133, sgw (Serving gateway) 134, pgw (PDN gateway) 135 and PCRF (Policy and Charging Rules Function, policy and tariff function entity) 136, etc. Optionally, MME 131 is a control node that handles signaling between UE 11 and EPC 13, providing bearer and connection management. HSS 132 is used to provide registers to manage functions such as home location registers (not shown) and to hold user-specific information about service characteristics, data rates, etc. All user data may be sent through SGW 134 and PGW 135 may provide IP address allocation and other functions for UE 11, PCRF 136 being a policy and charging control policy decision point for traffic data flows and IP bearer resources, which selects and provides available policy and charging control decisions for a policy and charging enforcement function (not shown).

IP services 14 may include the internet, intranets, IMS (IP Multimedia Subsystem ), or other IP services, etc.

Although the LTE system is described above as an example, it should be understood by those skilled in the art that the present application is not limited to LTE systems, but may be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, and future new network systems.

For a better understanding of the various embodiments of the present application, reference may be made to the above-described mobile terminal hardware architecture and communication network system.

The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the application, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims

A connection establishment method, characterized by being applied to a terminal device, comprising the steps of:

receiving configuration information, wherein the configuration information comprises auxiliary cell measurement parameters corresponding to at least one auxiliary node;

and establishing connection with a target auxiliary node according to the configuration information, wherein the target auxiliary node is at least one of the auxiliary nodes.
The method of claim 1, wherein the point in time of receiving the configuration information comprises at least one of:

When a main node instructs the terminal equipment to increase the main and auxiliary cells of the auxiliary node;

and when the master node instructs the terminal equipment to replace the primary and secondary cells of the secondary node.
The method of claim 1, wherein the configuration information is carried by radio resource control signaling; and/or the secondary cell measurement parameters are provided by the corresponding secondary node.
A method according to any of claims 1 to 3, wherein the step of establishing a connection with a target secondary node according to the configuration information comprises:

measuring based on the auxiliary cell measurement parameters to obtain a measurement result;

performing evaluation of the auxiliary cell according to the measurement result to obtain an auxiliary cell evaluation result;

determining an auxiliary node of a main and auxiliary cell meeting a preset execution condition as the target auxiliary node;

and sending the secondary cell evaluation result to the target secondary node so as to establish connection with the target secondary node.
The method of claim 4, wherein the secondary cell evaluation result is carried by at least one of the following signaling:

MsgA, msg1, msg3 and radio resource control signaling.
The method of claim 4, wherein the measuring based on the secondary cell measurement parameters further comprises, prior to obtaining the measurement result:

And determining the validity of the secondary cell measurement parameters.
The method of claim 4, wherein the establishing a connection with the target secondary node comprises: and configuring the primary and secondary cells, and/or configuring the secondary cells.
A method according to any of claims 1-3, characterized in that the terminal device accesses the primary node and/or the secondary node using NR technology.
A method according to any of claims 1 to 3, further comprising, after said establishing a connection with a target secondary node according to said configuration information, at least one of:

sending uplink data;

and receiving downlink data.
A connection establishment method, characterized by being applied to a terminal device, comprising the steps of:

receiving configuration information and obtaining a main node measurement result, wherein the configuration information comprises auxiliary cell measurement parameters corresponding to at least one auxiliary node;

and establishing connection with a target auxiliary node according to the configuration information and the measurement result of the main node, wherein the target auxiliary node is at least one of the auxiliary nodes.
The method of claim 10, wherein the obtaining the master node measurement comprises at least one of:

Acquiring the signal intensity of a main cell of a main node;

acquiring the signal quality of a main cell of a main node;

and acquiring the signal-to-noise ratio of the main cell of the main node.
The method of claim 10, wherein the establishing a connection with a target secondary node based on the configuration information and the primary node measurements comprises at least one of:

when the signal intensity of the main cell of the main node is larger than a first threshold value, establishing connection with a target auxiliary node according to the configuration information;

when the signal quality of the main cell of the main node is larger than a second threshold value, establishing connection with a target auxiliary node according to the configuration information;

when the signal-to-noise ratio of the main cell of the main node is larger than a third threshold value, establishing connection with a target auxiliary node according to the configuration information;

when the primary cell of the primary node meets an event A1, establishing connection with a target auxiliary node according to the configuration information;

and when the primary cell of the primary node does not meet the event A2, establishing connection with a target auxiliary node according to the configuration information.
The method of claim 12, wherein the establishing a connection with the target secondary node according to the configuration information comprises:

measuring based on the auxiliary cell measurement parameters to obtain a measurement result;

Performing evaluation of the auxiliary cell according to the measurement result to obtain an auxiliary cell evaluation result;

determining an auxiliary node of a main and auxiliary cell meeting a preset execution condition as the target auxiliary node;

and sending the secondary cell evaluation result to the target secondary node so as to establish connection with the target secondary node.
The method according to any of claims 10 to 13, wherein the point in time of receiving configuration information and obtaining master node measurements comprises at least one of:

when a main node instructs the terminal equipment to increase the main and auxiliary cells of the auxiliary node;

and when the master node instructs the terminal equipment to replace the primary and secondary cells of the secondary node.
The method of claim 14, wherein the time point at which the master node measurement is obtained further comprises at least one of:

before a main node instructs the terminal equipment to increase a main cell and a secondary cell of the secondary node;

after the master node instructs the terminal device to increase the primary and secondary cells of the secondary node.
The method of claim 15, comprising at least one of: and wirelessly evaluating the source auxiliary control cell signaling; the result is carried by at least one of the following signaling: the Msg A, msg1 and Msg3 are measured based on the auxiliary cell measurement parameters, and before the measurement results are obtained, the method further comprises the steps of: determining the validity of the secondary cell measurement parameters;

The establishing connection with the target auxiliary node comprises the following steps: and configuring the primary and secondary cells, and/or configuring the secondary cells.
The method according to any of claims 10 to 13, characterized in that the configuration information is carried by radio resource control signaling; and/or the secondary cell measurement parameters are provided by the corresponding secondary node.
A method according to any of claims 10 to 13, or 15 or 16, characterized in that the terminal device accesses the primary node and/or the secondary node using NR technology.
The method according to any of claims 10 to 13, or 15 or 16, further comprising, after said establishing a connection with a target secondary node based on said configuration information and said primary node measurements, at least one of:

sending uplink data;

and receiving downlink data.
A connection establishment method, characterized by being applied to a master node, comprising the steps of:

acquiring configuration information, wherein the configuration information comprises auxiliary cell measurement parameters corresponding to at least one auxiliary node, the configuration information is used for indicating terminal equipment to establish connection with a target auxiliary node according to the configuration information, and the target auxiliary node is at least one of the auxiliary nodes;

And sending the configuration information.
The method of claim 20, wherein the point in time at which the configuration information is transmitted comprises at least one of:

when a main node instructs the terminal equipment to increase the main and auxiliary cells of the auxiliary node;

and when the master node instructs the terminal equipment to replace the primary and secondary cells of the secondary node.
The method of claim 20, wherein the configuration information is carried by radio resource control signaling; and/or the secondary cell measurement parameters are provided by the corresponding secondary node.
A method according to any of claims 20 to 22, wherein the terminal device accesses the primary node and/or the secondary node using NR technology.
A connection establishment method, characterized by being applied to a master node, comprising the steps of:

acquiring configuration information, wherein the configuration information comprises auxiliary cell measurement parameters corresponding to at least one auxiliary node, the configuration information is used for indicating terminal equipment to establish connection with a target auxiliary node according to the configuration information and a main node measurement result, and the target auxiliary node is at least one of the auxiliary nodes;

and sending the configuration information.
The method of claim 24, wherein the master node measurement comprises at least one of:

the signal intensity of the main cell of the main node;

the signal quality of the main cell of the main node;

primary node primary cell signal to noise ratio.
The method of claim 24, wherein the transmitting configuration information comprises at least one of:

when a main node instructs the terminal equipment to increase the main and auxiliary cells of the auxiliary node;

and when the master node instructs the terminal equipment to replace the primary and secondary cells of the secondary node.
The method of claim 24, wherein the configuration information is carried by radio resource control signaling; and/or the secondary cell measurement parameters are provided by the corresponding secondary node.
A method according to any of claims 24 to 27, wherein the terminal device accesses the primary node and/or the secondary node using NR technology.
The connection establishment method is characterized by being applied to the auxiliary node and comprising the following steps of:

receiving an auxiliary cell evaluation result, wherein the auxiliary cell evaluation result is obtained by the terminal equipment based on auxiliary cell measurement parameters from a main node;

and establishing connection with the terminal equipment according to the auxiliary cell evaluation result.
The method according to claim 29, wherein said establishing a connection with the terminal device according to the secondary cell evaluation result comprises:

configuring a primary cell and a secondary cell for the terminal equipment;

and determining whether to configure a secondary cell for the terminal equipment according to the secondary cell evaluation result, and configuring the secondary cell for the terminal equipment when determining to configure the secondary cell for the terminal equipment.
The method of claim 29, wherein the secondary cell evaluation result is carried by at least one of the following signaling:

MsgA, msg1, msg3 and radio resource control signaling.
The method according to any one of claims 29 to 31, further comprising, prior to said receiving the secondary cell evaluation result:

and sending the secondary cell measurement parameters to the primary node.
A method according to any of claims 29 to 31, wherein the terminal device accesses the primary node and/or the secondary node using NR technology.
The method according to any of the claims 29 to 31, further comprising at least one of the following after the establishing of the connection with the terminal device according to the secondary cell evaluation result:

Receiving uplink data;

and sending downlink data.
The method according to any one of claims 29 to 31, wherein the point in time of receiving the secondary cell evaluation result comprises at least one of:

when the terminal equipment determines that the signal strength of the main cell of the main node is larger than a first threshold value;

when the terminal equipment determines that the signal quality of the main cell of the main node is larger than a second threshold value;

when the terminal equipment determines that the signal-to-noise ratio of the main cell of the main node is larger than a third threshold value;

when the terminal equipment determines that a main cell of a main node meets an event A1;

and when the terminal equipment determines that the primary cell of the primary node does not meet the event A2.
A communication system, comprising:

terminal device for performing the method according to claim 1 or 10;

a master node for performing the method of claim 20 or 24;

a secondary node for performing the method of claim 29.
A communication device, comprising: a memory and a processor;

the memory is used for storing program instructions;

the processor is configured to invoke program instructions in the memory to perform the method of claim 1 or 10 or 20 or 24 or 29.
A readable storage medium, wherein the readable storage medium has a computer program stored thereon; the computer program, when executed, implements the method of claim 1 or 10 or 20 or 24 or 29.
A computer program product, wherein the computer program product comprises a computer program; the computer program, when executed, implements the method of claim 1 or 10 or 20 or 24 or 29.