WO2018014783A1 - Method and device for data transmission - Google Patents

Abstract

The embodiments of the present application relate to the technical field of wireless communications, and in particular, to a method and a device for data transmission, for solving the problem existing in the prior art that a base station that transmits and receives data cannot perform data transmission with a UE in an inactive state. In the embodiments of the present application, after a terminal is switched from a connected state to a disconnected state, the context of the terminal is sent to a second network side device within a target region, such that the second network side device can perform data transmission, according to the received context, with the terminal. In the embodiments of the present application, a base station within the region corresponding to the terminal in a disconnected state can obtain the context of the terminal, and then can perform data transmission with the terminal in a disconnected state, such that the terminal in a disconnected state can transmit data faster, further improving transmission performance.

Description

Method and device for transmitting data

The present application claims priority to Chinese Patent Application No. 201610566411.6, filed on Jan. 18, 2016, the entire disclosure of which is incorporated herein by reference. .

Technical field

The present application relates to the field of wireless communication technologies, and in particular, to a method and device for transmitting data.

Background technique

With the development of wireless communication systems, terminal types and service types are diversified, and terminals save power, save network resources, and meet the needs of various service types. In order to ensure terminal power saving and fast data transmission at the same time, a terminal state inactive state is introduced. In this state, the terminal maintains the core network connection, but does not perform the normal operation of the air interface connection state (such as handover, uplink timing update, Radio link monitoring, etc., does not allocate a terminal identifier (Cell Radio Network Temporary Identifier (C-RNTI)) that is directly used for air interface transmission. Therefore, air interface scheduling transmission cannot be directly performed.

In the inactive state, the network side allocates a valid radio access network (RAN) identifier in a certain area, and the identifier is used to identify the terminal in the inactive state, and can be used for the network side to find the terminal or the terminal actively initiates the uplink. The identifier is used as the identity entry entry state, which may be referred to as an inactive terminal identifier (UE ID), and may also be referred to as a UE ID (resume UE ID) for restoring the connection. The identifier is valid only in a certain area that includes multiple cells or multiple eNBs. If the area is exceeded, the terminal needs to update the inactive UE ID.

The UE in the inactive state does not need to notify the base station to move in a certain area. Therefore, the base station that transmits and receives data cannot perform data transmission with the UE in the Inactive state.

In summary, the base station that currently sends and receives data cannot perform data transmission with the UE in the Inactive state.

Summary of the invention

The present invention provides a method and a device for transmitting data, which are used to solve the problem that a base station that transmits and receives data existing in the prior art cannot perform data transmission with a UE in an Inactive state.

In a first aspect, a method for transmitting data provided by an embodiment of the present application includes:

Determining, by the first network side device, a context of the terminal after the terminal transits from the connected state to the non-connected state;

Transmitting, by the first network side device, a context of the terminal to a second network side device in the target area, so that The second network side device performs data transmission with the terminal according to the received context;

The first network side device is a network side device that is last accessed before the terminal transits from the connected state to the non-connected state, and the target area is an area corresponding to the terminal in the non-connected state.

Optionally, before the determining, by the first network side device, the context of the terminal, the method further includes:

The first network side device instructs the terminal to perform state switching after determining that the terminal needs to switch to the non-connected state according to the user plane data of the terminal; and/or

After receiving the request from the terminal to switch to the non-connected state, the first network side device instructs the terminal to perform state switching.

Optionally, the area corresponding to the terminal in the non-connected state is an area corresponding to the non-connected terminal identifier of the terminal.

Optionally, the first network side device sends the context of the terminal to the second network side device in the target area, including:

Transmitting, by the first network side device, the context of the terminal to the second network side device in the target area by using an interface between the network side devices; and/or

The first network side device sends the context of the terminal to the second network side device in the target area through the core network.

Optionally, the first network side device sends the context of the terminal to the second network side device in the target area, including:

The first network side device sends all or part of the context of the terminal to the second network side device in the target area.

Optionally, the first network side device, after the terminal sends the context of the terminal to the second network side device in the target area, after the terminal is transferred from the connected state to the non-connected state, the method further includes:

The first network side device determines that a context sending condition is satisfied;

Wherein the context sending condition is part or all of the following conditions:

Context transmission condition 1. The first notification that the network side device needs to support fast data transmission after receiving the terminal;

Context sending condition 2: After receiving the terminal to enter the non-connected state, the second notification of the context needs to be sent;

Context Context 3: According to the terminal information of the terminal, it is determined that the context of the terminal needs to be sent to the second network side device.

Optionally, if the context sending condition includes a context sending condition one, and the first network side device is a network side device initially accessed by the terminal, the first notification is sent by the terminal;

If the context sending condition includes a context sending condition one, and the first network side device is not the terminal The network side device that is initially accessed, the first notification is sent by another network side device;

If the context sending condition includes a context sending condition 2, and the first network side device is a network side device initially accessed by the terminal, the second notification is sent by the terminal;

And if the context sending condition includes the context sending condition 2, and the first network side device is not the network side device initially accessed by the terminal, the second notification is sent by another network side device.

In a second aspect, a method for transmitting data provided by an embodiment of the present application includes:

The terminal in the connected state receives an indication of the state switching from the first network side device;

The terminal is switched from the connected state to the non-connected state, so that the first network side device sends the context of the terminal to the second network side device in the target area, so that the second network side device is received according to the second network side device. The context of the data transmission with the terminal;

The first network side device is a network side device that is last accessed before the terminal transits from the connected state to the non-connected state, and the target area is an area corresponding to the terminal in the non-connected state.

Optionally, before the terminal in the connected state receives the indication of the state switching from the first network side device, the method further includes:

The terminal sends a request for switching to a non-connected state to the first network side device, so that the first network side device sends the indication for performing state switching after receiving the request.

Optionally, before the terminal in the connected state receives the indication of the state switching from the first network side device, the method further includes:

After the terminal initially accesses the network side device, the terminal sends a first notification that the network side device needs to support fast data transmission to the network side device; or

After the terminal initially accesses the network side device, the terminal sends a second notification that the terminal needs to send a context after the terminal enters the non-connected state.

In a third aspect, the first network side device that transmits data according to the first embodiment of the present application, where the first network side device includes:

a determining module, configured to determine a context of the terminal after the terminal transits from the connected state to the non-connected state;

a processing module, configured to send a context of the terminal to a second network side device in the target area, so that the second network side device performs data transmission with the terminal according to the received context;

The first network side device is a network side device that is last accessed before the terminal transits from the connected state to the non-connected state, and the target area is an area corresponding to the terminal in the non-connected state.

Optionally, the determining module is further configured to:

Determining, according to the user plane data of the terminal, that the terminal needs to switch to the non-connected state, instructing the terminal to perform State switching; and/or

After receiving the request from the terminal to switch to the non-connected state, the terminal is instructed to perform state switching.

Optionally, the area corresponding to the terminal in the non-connected state is an area corresponding to the non-connected terminal identifier of the terminal.

Optionally, the processing module is specifically configured to:

Transmitting the context of the terminal to the second network side device in the target area through an interface between the network side devices; and/or

The context of the terminal is sent to the second network side device in the target area through the core network.

Optionally, the processing module is specifically configured to:

Sending all or part of the context of the terminal to the second network side device in the target area.

Optionally, the processing module is further configured to:

After the terminal transits from the connected state to the non-connected state, and determines that the context sending condition is met, the context of the terminal is sent to the second network side device in the target area;

Wherein the context sending condition is part or all of the following conditions:

Context transmission condition 1. The first notification that the network side device needs to support fast data transmission after receiving the terminal;

Context sending condition 2: After receiving the terminal to enter the non-connected state, the second notification of the context needs to be sent;

Context Context 3: According to the terminal information of the terminal, it is determined that the context of the terminal needs to be sent to the second network side device.

Optionally, if the context sending condition includes a context sending condition one, and the first network side device is a network side device initially accessed by the terminal, the first notification is sent by the terminal;

If the context sending condition includes the context sending condition one, and the first network side device is not the network side device that the terminal initially accesses, the first notification is sent by another network side device;

If the context sending condition includes a context sending condition 2, and the first network side device is a network side device initially accessed by the terminal, the second notification is sent by the terminal;

And if the context sending condition includes the context sending condition 2, and the first network side device is not the network side device initially accessed by the terminal, the second notification is sent by another network side device.

The fourth aspect, the first terminal for transmitting data provided by the embodiment of the present application, the terminal includes:

a receiving module, configured to receive, after the terminal is in a connected state, an indication of performing state switching from the first network side device;

a switching module, configured to: after the receiving module receives the indication, switch the terminal from a connected state to a non-connected state, so that the first network side device sends the context of the terminal to the target area Second network side The second network side device facilitates data transmission with the terminal according to the received context;

The first network side device is a network side device that is last accessed before the terminal transits from the connected state to the non-connected state, and the target area is an area corresponding to the terminal in the non-connected state.

Optionally, the receiving module is further configured to:

Before receiving the indication of the state switching from the first network side device, the terminal in the connected state sends a request to switch to the non-connected state to the first network side device, so that the first network side device receives the The indication of performing state switching is sent after the request.

Optionally, the receiving module is further configured to:

After initially accessing the network side device, sending, to the network side device, a first notification that the network side device is required to support fast data transmission; or

After the initial access to the network side device, the network side device sends a second notification that the terminal needs to send a context after entering the non-connected state.

In a fifth aspect, a second network side device for transmitting data according to the embodiment of the present application includes a processor, a transceiver, and a memory, where

A processor for reading a program in the memory, performing the following process:

After the terminal is switched from the connected state to the non-connected state, the context of the terminal is determined; the context of the terminal is sent by the transceiver to the second network side device in the target area, so that the second network side device is configured according to And receiving, by the terminal, the data transmission by the terminal, where the first network side device is a network side device that is last accessed before the terminal transits from the connection state to the non-connected state, and the target area is a non-connected state. The area corresponding to the terminal;

A transceiver for receiving and transmitting data under the control of a processor.

Optionally, the processor is specifically configured to:

Determining, by the user plane data of the terminal, that the terminal needs to switch to a non-connected state, and instructing the terminal to perform state switching; and/or

After receiving the request from the terminal to switch to the non-connected state, the terminal is instructed to perform state switching.

Optionally, the area corresponding to the terminal in the non-connected state is an area corresponding to the non-connected terminal identifier of the terminal.

Optionally, the processor is specifically configured to:

Transmitting the context of the terminal to the second network side device in the target area through an interface between the network side devices; and/or

The context of the terminal is sent to the second network side device in the target area through the core network.

Optionally, the processor is specifically configured to:

Sending all or part of the context of the terminal to the second network side device in the target area.

Optionally, the processor is further configured to:

After the terminal transits from the connected state to the non-connected state, and determines that the context sending condition is met, the context of the terminal is sent to the second network side device in the target area;

Wherein the context sending condition is part or all of the following conditions:

Context transmission condition 1. The first notification that the network side device needs to support fast data transmission after receiving the terminal;

Context sending condition 2: After receiving the terminal to enter the non-connected state, the second notification of the context needs to be sent;

Context Context 3: According to the terminal information of the terminal, it is determined that the context of the terminal needs to be sent to the second network side device.

Optionally, if the context sending condition includes a context sending condition one, and the first network side device is a network side device initially accessed by the terminal, the first notification is sent by the terminal;

If the context sending condition includes the context sending condition one, and the first network side device is not the network side device that the terminal initially accesses, the first notification is sent by another network side device;

If the context sending condition includes a context sending condition 2, and the first network side device is a network side device initially accessed by the terminal, the second notification is sent by the terminal;

And if the context sending condition includes the context sending condition 2, and the first network side device is not the network side device initially accessed by the terminal, the second notification is sent by another network side device.

In a sixth aspect, the second terminal for transmitting data provided by the embodiment of the present application includes a processor, a transceiver, and a memory, where

A processor for reading a program in the memory, performing the following process:

After the terminal is in the connected state, receiving an indication of performing state switching from the first network side device; after receiving the indication, the receiving module switches the terminal from the connected state to the non-connected state, so that The first network side device sends the context of the terminal to the second network side device in the target area, so that the second network side device performs data transmission with the terminal according to the received context; The first network side device is a network side device that is last accessed before the terminal transits from the connection state to the non-connected state, and the target area is an area corresponding to the terminal in the non-connected state;

A transceiver for receiving and transmitting data under the control of a processor.

Optionally, the processor is further configured to:

Before receiving the indication of the state switching from the first network side device, the terminal in the connected state sends a request to switch to the non-connected state to the first network side device, so that the first network side device receives the The indication of performing state switching is sent after the request.

Optionally, the processor is further configured to:

After initially accessing the network side device, sending, to the network side device, a first notification that the network side device is required to support fast data transmission; or

After the initial access to the network side device, the network side device sends a second notification that the terminal needs to send a context after entering the non-connected state.

After the terminal is transferred from the connected state to the non-connected state, the embodiment of the present application sends the context of the terminal to the second network side device in the target area, so that the second network side device can make the second network side device according to the received context and The terminal performs data transmission. The base station in the area corresponding to the terminal in the non-connected state can obtain the context of the terminal, so that the terminal can perform data transmission with the terminal in the non-connected state, so that the terminal in the non-connected state can transmit data more quickly; The performance of the transmission.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following drawings will be briefly described in the description of the embodiments. It is obvious that the drawings in the following description are only some embodiments of the present application, Those skilled in the art can also obtain other drawings based on these drawings without paying for inventive labor.

1 is a schematic structural diagram of a system for transmitting data according to an embodiment of the present application;

2 is a schematic diagram of a first network side device sending a context of the terminal to a second network side device in a target area according to an embodiment of the present disclosure;

3 is a schematic structural diagram of a first network side device according to an embodiment of the present application;

4 is a schematic structural diagram of a first terminal according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a second network side device according to a second embodiment of the present application;

6 is a schematic structural diagram of a second terminal according to an embodiment of the present application;

7 is a schematic flowchart of a method for transmitting data on a network side according to an embodiment of the present application;

FIG. 8 is a schematic flowchart of a method for transmitting data on a terminal side according to an embodiment of the present application.

detailed description

After the terminal is transferred from the connected state to the non-connected state, the embodiment of the present application sends the context of the terminal to the second network side device in the target area, so that the second network side device can make the second network side device according to the received context and The terminal performs data transmission. The base station in the area corresponding to the terminal in the non-connected state of the embodiment of the present application can obtain the context of the terminal, so that the terminal can perform data transmission with the terminal in the non-connected state, so that the terminal in the non-connected state can transmit data more quickly; Further improve the performance of the transmission.

The present application will be further described in detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, but not all embodiments. . All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

As shown in FIG. 1 , the system for transmitting data in the embodiment of the present application includes: a first network side device 10 and a terminal 20.

The first network side device 10 is configured to determine a context of the terminal after the terminal transits from the connected state to the non-connected state, and send the context of the terminal to the second network side device in the target area, so that the The second network side device performs data transmission with the terminal according to the received context;

The terminal 20 in the connected state is configured to receive an indication of performing state switching from the first network side device, and switch from the connected state to the non-connected state, so that the first network side device sends the context of the terminal to the target The second network side device in the area is convenient for the second network side device to perform data transmission with the terminal according to the received context;

In an implementation, when the second network side device performs data transmission with the terminal according to the received context, the terminal herein may remain in a non-connected state and transmit data; or may enter a connected state before transmitting. data. That is to say, the terminal that performs data transmission with the second network side device may be a terminal in a non-connected state or a terminal in a connected state.

The first network side device is a network side device that is last accessed before the terminal transits from the connected state to the non-connected state, and the target area is an area corresponding to the terminal in the non-connected state.

For example, the terminal initially accesses the network side device A, then switches to the network side device B, and switches from the connected state to the non-connected state after switching to the network side device B, then the network side device B is the terminal from the connected state to the non-connected state. The network side device that was last accessed before the state.

For each non-connected terminal, the network side allocates a non-connected terminal identifier (inactive UE ID) to the non-connected terminal. The inactive UE ID corresponds to an area, and the terminal does not need to switch when the terminal moves in the area. operating.

The target area of the embodiment of the present application is an area corresponding to the inactive UE ID of the terminal.

The first network side device may instruct the terminal to switch from the connected state to the non-connected state. Here are a few.

In a first mode, the first network side device determines, according to user plane data of the terminal, whether to enable the terminal to perform state switching.

The terminal is instructed to perform state switching after determining that it is necessary to switch to the non-connected state.

For example, the terminal does not have user plane data, and can switch the UE to the non-connected state; otherwise, if the terminal has user plane data, the UE does not perform state switching.

Manner 2: After determining that the state switch needs to be performed, the terminal sends a request to switch to the non-connected state to the first network side device.

Correspondingly, after receiving the request from the terminal to switch to the non-connected state, the first network side device instructs the terminal to perform state switching.

For example, the terminal may determine whether to enter the non-connected state according to whether it has data to send, that is, if there is no data to be sent, it is determined to enter the non-connected state; otherwise, it is determined not to enter the non-connected state.

The foregoing mode 1 and mode 2 may also be used in combination, that is, the first network side device instructs the terminal to perform state switching after determining that the terminal needs to switch and receives the request from the terminal.

It should be noted that the foregoing two methods are only examples, and any manner that can indicate that the terminal performs state switching is applicable to the embodiment of the present application.

In an implementation, for the second network side device, the first network side device may send different manners when sending the context of the terminal to the second network side device in the target area:

The first network side device sends the context of the terminal to the second network side device in the target area through an interface between the network side devices.

The second network side device sends the context of the terminal to the second network side device in the target area through the core network.

The above two transmission methods can be seen in Figure 2.

As shown in FIG. 2, in the schematic diagram of the first network side device in the embodiment of the present application, the UE sends the context of the terminal to the second network side device in the target area, and the UE is connected to the first network side device.

After the terminal is switched from the connected state to the non-connected state, the first network side device is not the second network side device that has no interface between the network side devices in the target area and the first network side device. Sending, by the core network, the context of the terminal to the second network side device in the target area;

For the second network side device that has an interface between the network side devices in the target area and the first network side device, the first network side device sends the context of the terminal to the target area through an interface between the network side devices The second network side device inside.

In the implementation, the sending mode 1 and the sending mode 2 may also be used in combination, that is, the second network side device that has an interface between the network side devices and the first network side device in the target area, where the first network side device may The context of the terminal is sent to the second network side device in the target area by using an interface between the network side device and the core network.

It should be noted that the foregoing two transmission modes are only exemplified, and the transmission manner of the first network side device that can send the context to the second network side device in the target area is applicable to the embodiment of the present application.

Optionally, the first network side device sends all or part of the context of the terminal to the first area in the target area. Two network side devices.

Since the purpose of the sending context is that the network side device can perform data transmission with the terminal, the network side device only needs to correctly parse the uplink data in the context and route the related information to the core network, so the first network side device can only This information in the context is sent to the second network side device within the target area.

Optionally, after the terminal transits from the connected state to the non-connected state, the first network side device may determine whether the context sending condition is met, and send the context of the terminal to the target area after determining that the context sending condition is met. Two network side devices.

The context sending condition includes but is not limited to some or all of the following conditions:

Context Transmission Condition 1. The first notification that the network side device needs to support fast data transmission after receiving the terminal.

Specifically, after initially accessing the network side device, the terminal sends a first notification that the network side device needs to support fast data transmission to the network side device;

Correspondingly, if the first network side device receives the first notification that the terminal needs the network side device to support fast data transmission, it is determined that the context sending condition is met.

The fast data transmission here includes data transmission in a non-connected state and/or data transmission into a connected state.

In an implementation, if the context sending condition includes a context sending condition one, and the first network side device is a network side device initially accessed by the terminal, the first notification is sent by the terminal;

If the context sending condition includes the context sending condition one, and the first network side device is not the network side device initially accessed by the terminal, the first notification is sent by another network side device.

For example, after the terminal accesses the network side device, the source network side device notifies the target network side device that the terminal needs to support data transmission in the non-connected state. That is, if the terminal informs the network side device terminal that it needs to support data transmission in the non-connected state when initially accessing the network side device, it is necessary to ensure that the target base station can obtain the notification after each handover of the terminal.

The context sending condition is that the second notification of the context needs to be sent after the terminal enters the non-connected state.

Specifically, after the terminal accesses the network side device, the terminal sends a second notification that the terminal needs to send a context after the terminal enters the non-connected state.

Correspondingly, if the first network side device receives the second notification of the context after the terminal enters the non-connected state, it determines that the context sending condition is met.

If the context sending condition includes a context sending condition 2, and the first network side device is a network side device initially accessed by the terminal, the second notification is sent by the terminal;

And if the context sending condition includes the context sending condition 2, and the first network side device is not the network side device initially accessed by the terminal, the second notification is sent by another network side device.

For example, the handover process occurs after the terminal accesses the network side device. In the handover process, the source network side device notifies the target network side device that the terminal needs to send the context after entering the non-connected state. That is, if the terminal needs to send a context after notifying the network side device terminal to enter the non-connected state when initially accessing the network side device, it is necessary to ensure that the target base station can obtain the notification after each handover of the terminal.

Context Context 3: According to the terminal information of the terminal, it is determined that the context of the terminal needs to be sent to the second network side device.

For example, if the service type of the UE needs to support fast data transmission with low delay, the context of the terminal needs to be sent to the second network side device.

For example, if the UE is in high speed, the context of the terminal needs to be sent to the second network side device.

The network side device in the embodiment of the present application may be a base station (such as a macro base station, a home base station, etc.), and may also be other network side devices.

As shown in FIG. 3, the first network side device of the first embodiment of the present application includes:

a determining module 300, configured to determine a context of the terminal after the terminal transits from the connected state to the non-connected state;

The processing module 301 is configured to send the context of the terminal to the second network side device in the target area, so that the second network side device performs data transmission with the terminal according to the received context.

The first network side device is a network side device that is last accessed before the terminal transits from the connected state to the non-connected state, and the target area is an area corresponding to the terminal in the non-connected state.

Optionally, the determining module 300 is further configured to:

Determining, according to the user plane data of the terminal, that the terminal needs to switch to the non-connected state, instructing the terminal to perform state switching; and/or

After receiving the request from the terminal to switch to the non-connected state, the terminal is instructed to perform state switching.

Optionally, the area corresponding to the terminal in the non-connected state is an area corresponding to the non-connected terminal identifier of the terminal.

Optionally, the processing module 301 is specifically configured to:

Transmitting the context of the terminal to the second network side device in the target area through an interface between the network side devices; and/or

The context of the terminal is sent to the second network side device in the target area through the core network.

Optionally, the processing module 301 is specifically configured to:

Sending all or part of the context of the terminal to the second network side device in the target area.

Optionally, the processing module 301 is further configured to:

After the terminal transits from the connected state to the non-connected state and determines that the context sending condition is satisfied, the context of the terminal is Sending to the second network side device in the target area;

Wherein the context sending condition is part or all of the following conditions:

Context transmission condition 1. The first notification that the network side device needs to support fast data transmission after receiving the terminal;

Context sending condition 2: After receiving the terminal to enter the non-connected state, the second notification of the context needs to be sent;

Context Context 3: According to the terminal information of the terminal, it is determined that the context of the terminal needs to be sent to the second network side device.

Optionally, if the context sending condition includes a context sending condition one, and the first network side device is a network side device initially accessed by the terminal, the first notification is sent by the terminal;

If the context sending condition includes the context sending condition one, and the first network side device is not the network side device that the terminal initially accesses, the first notification is sent by another network side device;

If the context sending condition includes a context sending condition 2, and the first network side device is a network side device initially accessed by the terminal, the second notification is sent by the terminal;

And if the context sending condition includes the context sending condition 2, and the first network side device is not the network side device initially accessed by the terminal, the second notification is sent by another network side device.

As shown in FIG. 4, the first terminal in this embodiment of the present application includes:

The receiving module 400 is configured to receive an indication of performing state switching from the first network side device after the terminal is in the connected state;

The switching module 401 is configured to: after the receiving module receives the indication, switch the terminal from a connected state to a non-connected state, so that the first network side device sends the context of the terminal to the target area. The second network side device in the second network side device facilitates data transmission between the second network side device and the terminal according to the received context;

The first network side device is a network side device that is last accessed before the terminal transits from the connected state to the non-connected state, and the target area is an area corresponding to the terminal in the non-connected state.

Optionally, the receiving module 400 is further configured to:

Before receiving the indication of the state switching from the first network side device, the terminal in the connected state sends a request to switch to the non-connected state to the first network side device, so that the first network side device receives the The indication of performing state switching is sent after the request.

Optionally, the receiving module 400 is further configured to:

After initially accessing the network side device, sending, to the network side device, a first notification that the network side device is required to support fast data transmission; or

After the initial access to the network side device, the network side device sends a second notification that the terminal needs to send a context after entering the non-connected state.

As shown in FIG. 5, the second network side device in the second embodiment of the present application includes:

The processor 501 is configured to read a program in the memory 504 and perform the following process:

After the terminal is switched from the connected state to the non-connected state, the context of the terminal is determined; the context of the terminal is sent by the transceiver 502 to the second network side device in the target area, so that the second network side device Performing data transmission with the terminal according to the received context;

The first network side device is a network side device that is last accessed before the terminal transits from the connected state to the non-connected state, and the target area is an area corresponding to the terminal in the non-connected state.

The transceiver 502 is configured to receive and transmit data under the control of the processor 501.

Optionally, the processor 501 is further configured to:

Determining, according to the user plane data of the terminal, that the terminal needs to switch to the non-connected state, instructing the terminal to perform state switching; and/or

After receiving the request from the terminal to switch to the non-connected state, the terminal is instructed to perform state switching.

Optionally, the area corresponding to the terminal in the non-connected state is an area corresponding to the non-connected terminal identifier of the terminal.

Optionally, the processor 501 is specifically configured to:

Transmitting the context of the terminal to the second network side device in the target area through an interface between the network side devices; and/or

The context of the terminal is sent to the second network side device in the target area through the core network.

Optionally, the processor 501 is specifically configured to:

Sending all or part of the context of the terminal to the second network side device in the target area.

Optionally, the processor 501 is further configured to:

After the terminal transits from the connected state to the non-connected state, and determines that the context sending condition is met, the context of the terminal is sent to the second network side device in the target area;

Wherein the context sending condition is part or all of the following conditions:

Context transmission condition 1. The first notification that the network side device needs to support fast data transmission after receiving the terminal;

Context sending condition 2: After receiving the terminal to enter the non-connected state, the second notification of the context needs to be sent;

Context Context 3: According to the terminal information of the terminal, it is determined that the context of the terminal needs to be sent to the second network side device.

Optionally, if the context sending condition includes a context sending condition one, and the first network side device is a network side device initially accessed by the terminal, the first notification is sent by the terminal;

If the context sending condition includes a context sending condition one, and the first network side device is not the terminal The network side device that is initially accessed, the first notification is sent by another network side device;

If the context sending condition includes a context sending condition 2, and the first network side device is a network side device initially accessed by the terminal, the second notification is sent by the terminal;

And if the context sending condition includes the context sending condition 2, and the first network side device is not the network side device initially accessed by the terminal, the second notification is sent by another network side device.

In FIG. 5, a bus architecture (represented by bus 500), bus 500 can include any number of interconnected buses and bridges, and bus 500 will include one or more processors represented by processor 501 and memory represented by memory 504. The various circuits are linked together. The bus 500 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, will not be further described herein. Bus interface 503 provides an interface between bus 500 and transceiver 502. Transceiver 502 can be an element or a plurality of elements, such as multiple receivers and transmitters, providing means for communicating with various other devices on a transmission medium. Data processed by processor 501 is transmitted over wireless medium via antenna 505. Further, antenna 505 also receives the data and transmits the data to processor 501.

The processor 501 is responsible for managing the bus 500 and the usual processing, and can also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. The memory 504 can be used to store data used by the processor 501 when performing operations.

Optionally, the processor 501 can be a central embedded device (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device ( Complex Programmable Logic Device, CPLD).

As shown in FIG. 6, the second terminal in this embodiment of the present application includes:

The processor 601 is configured to read a program in the memory 604 and perform the following process:

After the terminal is in the connected state, receiving, by the transceiver 602, an indication of performing state switching from the first network side device; after the receiving module receives the indication, switching the terminal from the connected state to the non-connected And the first network side device is configured to send the context of the terminal to the second network side device in the target area, so that the second network side device performs data transmission with the terminal according to the received context;

The first network side device is a network side device that is last accessed before the terminal transits from the connected state to the non-connected state, and the target area is an area corresponding to the terminal in the non-connected state.

The transceiver 602 is configured to receive and transmit data under the control of the processor 601.

Optionally, the processor 601 is further configured to:

Before receiving the indication of the state switching from the first network side device, the terminal in the connected state sends a request to switch to the non-connected state to the first network side device, so that the first network side device receives the Send after request The indication of the state switching is performed.

Optionally, the processor 601 is further configured to:

After initially accessing the network side device, sending, to the network side device, a first notification that the network side device is required to support fast data transmission; or

After the initial access to the network side device, the network side device sends a second notification that the terminal needs to send a context after entering the non-connected state.

In FIG. 6, a bus architecture (represented by bus 600), bus 600 may include any number of interconnected buses and bridges, and bus 600 will include one or more processors and memory 604 represented by general purpose processor 601. The various circuits of the memory are linked together. The bus 600 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, will not be further described herein. Bus interface 603 provides an interface between bus 600 and transceiver 602. Transceiver 602 can be an element or a plurality of elements, such as a plurality of receivers and transmitters, providing means for communicating with various other devices on a transmission medium. For example, transceiver 602 receives external data from other devices. The transceiver 602 is configured to send the processed data of the processor 601 to other devices. Depending on the nature of the computing system, a user interface 605 can also be provided, such as a keypad, display, speaker, microphone, joystick.

The processor 601 is responsible for managing the bus 600 and the usual processing, running a general purpose operating system as described above. The memory 604 can be used to store data used by the processor 601 in performing operations.

Optionally, the processor 601 can be a CPU, an ASIC, an FPGA, or a CPLD.

Based on the same inventive concept, the embodiment of the present application further provides a method for transmitting data on the network side, where the device corresponding to the method is the first network side device in the system for transmitting data in the embodiment of the present application, and the method solves the problem. The principle is similar to the device, so the implementation of the method can be referred to the implementation of the device, and the details are not repeated here.

As shown in FIG. 7, the method for transmitting data on the network side of the embodiment of the present application includes:

Step 700: After the terminal transits from the connected state to the non-connected state, the first network side device determines a context of the terminal.

Step 701: The first network side device sends the context of the terminal to the second network side device in the target area, so that the second network side device performs data transmission with the terminal according to the received context.

The first network side device is a network side device that is last accessed before the terminal transits from the connected state to the non-connected state, and the target area is an area corresponding to the terminal in the non-connected state.

Optionally, before the determining, by the first network side device, the context of the terminal, the method further includes:

The first network side device instructs the terminal to perform state switching after determining that the terminal needs to switch to the non-connected state according to the user plane data of the terminal; and/or

After receiving the request from the terminal to switch to the non-connected state, the first network side device instructs the terminal to perform State switching.

Optionally, the area corresponding to the terminal in the non-connected state is an area corresponding to the non-connected terminal identifier of the terminal.

Optionally, the first network side device sends the context of the terminal to the second network side device in the target area, including:

Transmitting, by the first network side device, the context of the terminal to the second network side device in the target area by using an interface between the network side devices; and/or

The first network side device sends the context of the terminal to the second network side device in the target area through the core network.

Optionally, the first network side device sends the context of the terminal to the second network side device in the target area, including:

The first network side device sends all or part of the context of the terminal to the second network side device in the target area.

Optionally, the first network side device, after the terminal sends the context of the terminal to the second network side device in the target area, after the terminal is transferred from the connected state to the non-connected state, the method further includes:

The first network side device determines that a context sending condition is satisfied;

Wherein the context sending condition is part or all of the following conditions:

Context transmission condition 1. The first notification that the network side device needs to support fast data transmission after receiving the terminal;

Context sending condition 2: After receiving the terminal to enter the non-connected state, the second notification of the context needs to be sent;

Context Context 3: According to the terminal information of the terminal, it is determined that the context of the terminal needs to be sent to the second network side device.

Optionally, if the context sending condition includes a context sending condition one, and the first network side device is a network side device initially accessed by the terminal, the first notification is sent by the terminal;

If the context sending condition includes the context sending condition one, and the first network side device is not the network side device that the terminal initially accesses, the first notification is sent by another network side device;

If the context sending condition includes a context sending condition 2, and the first network side device is a network side device initially accessed by the terminal, the second notification is sent by the terminal;

And if the context sending condition includes the context sending condition 2, and the first network side device is not the network side device initially accessed by the terminal, the second notification is sent by another network side device.

Based on the same inventive concept, a method for transmitting data on the terminal side is also provided in the embodiment of the present application. The device corresponding to the method is a terminal in a system for transmitting data in the embodiment of the present application, and the method solves the problem and the method The devices are similar, so the implementation of the method can be referred to the implementation of the device, and the details are not repeated here.

As shown in FIG. 8, the method for transmitting data on the terminal side of the embodiment of the present application includes:

Step 800: The terminal in the connected state receives an indication of performing state switching from the first network side device.

Step 801: The terminal is switched from the connected state to the non-connected state, so that the first network side device sends the context of the terminal to the second network side device in the target area, so that the second network side device is convenient. Performing data transmission with the terminal according to the received context;

The first network side device is a network side device that is last accessed before the terminal transits from the connected state to the non-connected state, and the target area is an area corresponding to the terminal in the non-connected state.

Optionally, before the terminal in the connected state receives the indication of the state switching from the first network side device, the method further includes:

The terminal sends a request for switching to a non-connected state to the first network side device, so that the first network side device sends the indication for performing state switching after receiving the request.

Optionally, before the terminal in the connected state receives the indication of the state switching from the first network side device, the method further includes:

After the terminal initially accesses the network side device, the terminal sends a first notification that the network side device needs to support fast data transmission to the network side device; or

After the terminal initially accesses the network side device, the terminal sends a second notification that the terminal needs to send a context after the terminal enters the non-connected state.

The following is a few examples, and the scheme of the present application will be described in detail.

Embodiment 1: The UE indicates that the data transmission in the inactive state is supported, and the base station transmits the UE context.

Among them, there is a direct interface between the base stations. The base station can be a centralized deployment (CU/DU separation) or a distributed deployment (no CU/DU separation).

Step 1: When the UE initially accesses the base station, the UE notifies the base station that the UE needs to support data transmission in an inactive state.

If the handover process occurs after the UE initially accesses the base station, the source base station notifies the target base station that the UE needs to support data transmission in an inactive state during the handover process. That is, if the UE informs the base station that the UE needs to support data transmission in the inactive state when initially accessing the base station, it is necessary to ensure that the target base station can obtain the notification after each handover of the UE.

Step 2: The serving base station of the UE saves the information.

Step 3: The UE performs a state transition, that is, enters an inactive state from the connected state.

Step 4: The last serving base station of the UE configures the context of the UE to other base stations in the area corresponding to the UE in the inactive state through the interface between the base stations.

Embodiment 2: The UE indicates that the data transmission in the inactive state is supported, and the base station transmits the UE context.

Among them, there is no direct interface between the base stations. The base station can be a centralized deployment (CU/DU separation) or a distributed deployment (no CU/DU separation).

Step 1: When the UE initially accesses the base station, the UE notifies the base station that the UE needs to support data transmission in an inactive state.

If the handover process occurs after the UE initially accesses the base station, the source base station notifies the target base station that the UE needs to support data transmission in an inactive state during the handover process. That is, if the UE informs the base station that the UE needs to support data transmission in the inactive state when initially accessing the base station, it is necessary to ensure that the target base station can obtain the notification after each handover of the UE.

Step 2: The serving base station of the UE saves the information.

Step 3: The UE performs a state transition, that is, enters an inactive state from the connected state.

Step 4: The last serving base station of the UE configures the context of the UE to other base stations in the area corresponding to the UE in the inactive state through the core network.

Embodiment 3: The UE1 indicates that the fast data transmission in the inactive state is supported, and the UE2 indicates that only the data transmission in the inactive state is supported, and the fast data transmission is not required.

Among them, there is a direct interface between the base stations. The base station can be a centralized deployment (CU/DU separation) or a distributed deployment (no CU/DU separation).

Step 1: When the UE1 initially accesses the base station, the UE1 notifies the base station that the UE needs to support the fast data transmission in the inactive state, and the UE2 notifies the base station that only the data transmission does not need to support the fast data transmission.

If the handover process occurs after the UE1 initially accesses the base station, the source base station notifies the target base station that the UE1 needs to support fast data transmission in the inactive state during the handover process. That is, if the UE1 informs the base station that the UE1 needs to support fast data transmission in the inactive state when initially accessing the base station, it is necessary to ensure that the target base station can obtain the notification after each handover of the UE1.

If the handover process occurs after the UE2 initially accesses the base station, the source base station notifies the target base station that the UE2 only supports data transmission and does not need to support fast data transmission during the handover process. That is, if the UE2 informs the base station that the UE2 only supports data transmission when initially accessing the base station, and does not need to support fast data transmission, it is necessary to ensure that the target base station can obtain the notification after each handover of the UE2.

Step 2: The serving base stations of UE1 and UE2 save the information.

Step 3: UE1 performs a state transition, that is, from the connected state to the inactive state.

Step 4: The last serving base station of the UE1 configures the context of the UE1 to other base stations in the area corresponding to the UE1 in the inactive state through the interface between the base stations.

In step 3, if UE2 performs a state transition, it enters the inactive state from the connected state.

Correspondingly, in step 4, the last serving base station of UE2 does not need to broadcast the context of UE2.

Embodiment 4: UE1 indicates that fast data transmission is supported in the inactive state, and UE2 indicates that only the inactive state is supported. The data transfer does not need to support fast data transfer.

Among them, there is no direct interface between the base stations. The base station can be centralized deployment (CU/DU separation) or distributed deployment (no CU/DU separation)

Step 1: When the UE1 initially accesses the base station, the UE1 notifies the base station that the UE needs to support the fast data transmission in the inactive state, and the UE2 notifies the base station that only the data transmission does not need to support the fast data transmission.

If the handover process occurs after the UE1 initially accesses the base station, the source base station notifies the target base station that the UE1 needs to support fast data transmission in the inactive state during the handover process. That is, if the UE1 informs the base station that the UE1 needs to support fast data transmission in the inactive state when initially accessing the base station, it is necessary to ensure that the target base station can obtain the notification after each handover of the UE1.

If the handover process occurs after the UE2 initially accesses the base station, the source base station notifies the target base station that the UE2 only supports data transmission and does not need to support fast data transmission during the handover process. That is, if the UE2 informs the base station that the UE2 only supports data transmission when initially accessing the base station, and does not need to support fast data transmission, it is necessary to ensure that the target base station can obtain the notification after each handover of the UE2.

Step 2: The serving base stations of UE1 and UE2 save the information.

Step 3: UE1 performs a state transition, that is, from the connected state to the inactive state.

Step 4: The last serving base station of the UE1 configures the context of the UE1 to other base stations in the area corresponding to the UE1 in the inactive state through the core network.

In step 3, if UE2 performs a state transition, it enters the inactive state from the connected state.

Correspondingly, in step 4, the last serving base station of UE2 does not need to broadcast the context of UE2.

In the fifth embodiment, the base station determines, according to the information of the UE, whether the UE context needs to be delivered.

Among them, there is a direct interface between the base stations. The base station can be a centralized deployment (CU/DU separation) or a distributed deployment (no CU/DU separation).

Step 1: The UE performs a state transition, that is, from the conneted state to the inactive state.

Step 2: The last serving base station of the UE determines whether it is necessary to deliver the UE context according to the service type and mobility of the UE.

Step 3: If the result of the judgment is that the UE context needs to be transmitted, the last serving base station of the UE configures the context of the UE to other base stations in the area corresponding to the UE in the inactive state through the interface between the base stations.

In the sixth embodiment, the base station determines, according to the information of the UE, whether the UE context needs to be delivered.

There is no direct interface between the base stations. The base station can be a centralized deployment (CU/DU separation) or a distributed deployment (no CU/DU separation).

Step 1: The UE performs a state transition, that is, from the conneted state to the inactive state.

Step 2: The last serving base station of the UE determines whether it is necessary to deliver the UE context according to the service type and mobility of the UE.

Step 3: If the result of the judgment is that the UE context needs to be transmitted, the last serving base station of the UE configures the context of the UE to other base stations in the area corresponding to the UE in the inactive state through the core network.

The present application has been described above with reference to block diagrams and/or flowchart illustrations of a method, apparatus (system) and/or computer program product according to embodiments of the present application. It will be understood that one block of the block diagrams and/or flowchart illustrations and combinations of blocks of the block diagrams and/or flowchart illustrations can be implemented by computer program instructions. These computer program instructions may be provided to a general purpose computer, a processor of a special purpose computer, and/or other programmable data processing apparatus to produce a machine such that instructions for execution via a computer processor and/or other programmable data processing apparatus are created for A method of implementing the functions/actions specified in the block diagrams and/or flowchart blocks.

Accordingly, the application can also be implemented in hardware and/or software (including firmware, resident software, microcode, etc.). Still further, the application can take the form of a computer program product on a computer usable or computer readable storage medium having computer usable or computer readable program code embodied in a medium for use by an instruction execution system or Used in conjunction with the instruction execution system. In the context of the present application, a computer usable or computer readable medium can be any medium that can contain, store, communicate, communicate, or transport a program for use by an instruction execution system, apparatus or device, or in conjunction with an instruction execution system, Used by the device or device.

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

Claims (30)

A method of transmitting data, the method comprising: Determining, by the first network side device, a context of the terminal after the terminal transits from the connected state to the non-connected state; The first network side device sends the context of the terminal to the second network side device in the target area, so that the second network side device performs data transmission with the terminal according to the received context; The first network side device is a network side device that is last accessed before the terminal transits from the connected state to the non-connected state, and the target area is an area corresponding to the terminal in the non-connected state. The method according to claim 1, wherein before the determining, by the first network side device, the context of the terminal, the method further comprises: The first network side device instructs the terminal to perform state switching after determining that the terminal needs to switch to the non-connected state according to the user plane data of the terminal; and/or After receiving the request from the terminal to switch to the non-connected state, the first network side device instructs the terminal to perform state switching. The method according to claim 1, wherein the area corresponding to the terminal in the non-connected state is the area corresponding to the non-connected terminal identifier of the terminal. The method according to claim 1, wherein the first network side device sends the context of the terminal to the second network side device in the target area, including: Transmitting, by the first network side device, the context of the terminal to the second network side device in the target area by using an interface between the network side devices; and/or The first network side device sends the context of the terminal to the second network side device in the target area through the core network. The method according to claim 1, wherein the first network side device sends the context of the terminal to the second network side device in the target area, including: The first network side device sends all or part of the context of the terminal to the second network side device in the target area. The method according to any one of claims 1 to 5, wherein the first network side device sends the context of the terminal to the second in the target area after the terminal transits from the connected state to the non-connected state. Before the network side device, it also includes: The first network side device determines that a context sending condition is satisfied; Wherein the context sending condition is part or all of the following conditions: Context transmission condition 1. The first notification that the network side device needs to support fast data transmission after receiving the terminal; Context sending condition 2: After receiving the terminal to enter the non-connected state, the second notification of the context needs to be sent; Context Context 3: According to the terminal information of the terminal, it is determined that the context of the terminal needs to be sent to the second network side device. The method according to claim 6, wherein if the context transmission condition includes a context transmission condition one, and the first network side device is a network side device initially accessed by the terminal, the first The notification is sent by the terminal; If the context sending condition includes the context sending condition one, and the first network side device is not the network side device that the terminal initially accesses, the first notification is sent by another network side device; If the context sending condition includes a context sending condition 2, and the first network side device is a network side device initially accessed by the terminal, the second notification is sent by the terminal; And if the context sending condition includes the context sending condition 2, and the first network side device is not the network side device initially accessed by the terminal, the second notification is sent by another network side device. A method of transmitting data, the method comprising: The terminal in the connected state receives an indication of the state switching from the first network side device; The terminal is switched from the connected state to the non-connected state, so that the first network side device sends the context of the terminal to the second network side device in the target area, so that the second network side device is received according to the second network side device. The context of the data transmission with the terminal; The first network side device is a network side device that is last accessed before the terminal transits from the connected state to the non-connected state, and the target area is an area corresponding to the terminal in the non-connected state. The method according to claim 8, wherein before the terminal in the connected state receives the indication of the state switching from the first network side device, the method further includes: The terminal sends a request for switching to a non-connected state to the first network side device, so that the first network side device sends the indication for performing state switching after receiving the request. The method according to claim 8, wherein before the terminal in the connected state receives the indication of the state switching from the first network side device, the method further includes: After the terminal initially accesses the network side device, the terminal sends a first notification that the network side device needs to support fast data transmission to the network side device; or After the terminal initially accesses the network side device, the terminal sends a second notification that the terminal needs to send a context after the terminal enters the non-connected state. A first network side device that transmits data, wherein the first network side device includes: a determining module, configured to determine a context of the terminal after the terminal transits from the connected state to the non-connected state; a processing module, configured to send a context of the terminal to a second network side device in the target area, so that the second network side device performs data transmission with the terminal according to the received context; The first network side device is a network side device that is last accessed before the terminal transits from the connected state to the non-connected state, and the target area is an area corresponding to the terminal in the non-connected state. The first network side device according to claim 11, wherein the determining module is further configured to: Determining, by the user plane data of the terminal, that the terminal needs to switch to a non-connected state, and instructing the terminal to perform state switching; and/or After receiving the request from the terminal to switch to the non-connected state, the terminal is instructed to perform state switching. The first network side device according to claim 11, wherein the area corresponding to the terminal in the non-connected state is an area corresponding to the non-connected terminal identifier of the terminal. The first network side device according to claim 11, wherein the processing module is specifically configured to: Transmitting the context of the terminal to the second network side device in the target area through an interface between the network side devices; and/or The context of the terminal is sent to the second network side device in the target area through the core network. The first network side device according to claim 11, wherein the processing module is specifically configured to: Sending all or part of the context of the terminal to the second network side device in the target area. The first network side device according to any one of claims 11 to 15, wherein the processing module is further configured to: After the terminal transits from the connected state to the non-connected state, and determines that the context sending condition is met, the context of the terminal is sent to the second network side device in the target area; Wherein the context sending condition is part or all of the following conditions: Context transmission condition 1. The first notification that the network side device needs to support fast data transmission after receiving the terminal; Context sending condition 2: After receiving the terminal to enter the non-connected state, the second notification of the context needs to be sent; Context Context 3: According to the terminal information of the terminal, it is determined that the context of the terminal needs to be sent to the second network side device. The first network side device according to claim 16, wherein, if the context transmission condition includes a context transmission condition one, and the first network side device is a network side device initially accessed by the terminal, The first notification is sent by the terminal; If the context sending condition includes the context sending condition one, and the first network side device is not the network side device that the terminal initially accesses, the first notification is sent by another network side device; If the context sending condition includes a context sending condition 2, and the first network side device is the beginning of the terminal The network side device that is initially accessed, and the second notification is sent by the terminal; And if the context sending condition includes the context sending condition 2, and the first network side device is not the network side device initially accessed by the terminal, the second notification is sent by another network side device. A terminal for transmitting data, characterized in that the terminal comprises: a receiving module, configured to receive, after the terminal is in a connected state, an indication of performing state switching from the first network side device; a switching module, configured to: after the receiving module receives the indication, switch the terminal from a connected state to a non-connected state, so that the first network side device sends the context of the terminal to the target area The second network side device is convenient for the second network side device to perform data transmission with the terminal according to the received context; The first network side device is a network side device that is last accessed before the terminal transits from the connected state to the non-connected state, and the target area is an area corresponding to the terminal in the non-connected state. The terminal according to claim 18, wherein the receiving module is further configured to: Before receiving the indication of the state switching from the first network side device, the terminal in the connected state sends a request to switch to the non-connected state to the first network side device, so that the first network side device receives the The indication of performing state switching is sent after the request. The terminal according to claim 18, wherein the receiving module is further configured to: After initially accessing the network side device, sending, to the network side device, a first notification that the network side device is required to support fast data transmission; or After the initial access to the network side device, the network side device sends a second notification that the terminal needs to send a context after entering the non-connected state. A first network side device that transmits data, wherein the first network side device includes: A processor for reading a program in the memory, performing the following process: After the terminal is switched from the connected state to the non-connected state, the context of the terminal is determined; the context of the terminal is sent by the transceiver to the second network side device in the target area, so that the second network side device is configured according to And receiving, by the terminal, the data transmission by the terminal, where the first network side device is a network side device that is last accessed before the terminal transits from the connection state to the non-connected state, and the target area is a non-connected state. The area corresponding to the terminal; A transceiver for receiving and transmitting data under the control of the processor. The first network side device according to claim 21, wherein the processor is specifically configured to: Determining, by the user plane data of the terminal, that the terminal needs to switch to a non-connected state, and instructing the terminal to perform state switching; and/or After receiving the request from the terminal to switch to the non-connected state, the terminal is instructed to perform state switching. The first network side device according to claim 21, wherein the area corresponding to the non-connected terminal is an area corresponding to the non-connected terminal identifier of the terminal. The first network side device according to claim 21, wherein the processor is specifically configured to: Transmitting the context of the terminal to the second network side device in the target area through an interface between the network side devices; and/or The context of the terminal is sent to the second network side device in the target area through the core network. The first network side device according to claim 21, wherein the processor is specifically configured to: Sending all or part of the context of the terminal to the second network side device in the target area. The first network side device according to any one of claims 21 to 25, wherein the processor is further configured to: After the terminal transits from the connected state to the non-connected state, and determines that the context sending condition is met, the context of the terminal is sent to the second network side device in the target area; Wherein the context sending condition is part or all of the following conditions: Context transmission condition 1. The first notification that the network side device needs to support fast data transmission after receiving the terminal; Context sending condition 2: After receiving the terminal to enter the non-connected state, the second notification of the context needs to be sent; Context Context 3: According to the terminal information of the terminal, it is determined that the context of the terminal needs to be sent to the second network side device. The first network side device according to claim 26, wherein, if the context transmission condition includes a context transmission condition one, and the first network side device is a network side device initially accessed by the terminal, The first notification is sent by the terminal; If the context sending condition includes the context sending condition one, and the first network side device is not the network side device that the terminal initially accesses, the first notification is sent by another network side device; If the context sending condition includes a context sending condition 2, and the first network side device is a network side device initially accessed by the terminal, the second notification is sent by the terminal; And if the context sending condition includes the context sending condition 2, and the first network side device is not the network side device initially accessed by the terminal, the second notification is sent by another network side device. A terminal for transmitting data, characterized in that the terminal comprises: A processor for reading a program in the memory, performing the following process: After the terminal is in the connected state, receiving an indication of performing state switching from the first network side device; after receiving the indication, the receiving module switches the terminal from the connected state to the non-connected state, so that The first network side device sends the context of the terminal to the second network side device in the target area, so that the second network side device performs data transmission with the terminal according to the received context; The first network side device is connected to the terminal Connected to the network-side device that was last accessed before the non-connected state, where the target area is the area corresponding to the terminal in the non-connected state; A transceiver for receiving and transmitting data under the control of the processor. The terminal of claim 28, wherein the processor is further configured to: Before receiving the indication of the state switching from the first network side device, the terminal in the connected state sends a request to switch to the non-connected state to the first network side device, so that the first network side device receives the The indication of performing state switching is sent after the request. The terminal of claim 28, wherein the processor is further configured to: After initially accessing the network side device, sending, to the network side device, a first notification that the network side device is required to support fast data transmission; or After the initial access to the network side device, the network side device sends a second notification that the terminal needs to send a context after entering the non-connected state.

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