WO2018127215A1 - Method and apparatus for reporting position information of terminal, and method and apparatus for performing downlink transmission - Google Patents

Abstract

Disclosed in the present invention are a method and apparatus for reporting position information of a terminal, and a method and apparatus for performing downlink transmission. The method comprises: determining that a cell reelection occurs on a user equipment; when it is determined that the user equipment is a user equipment in an inactive state, sending notification information to a next-generation base station, so as to inform the next-generation base station of a cell to which the user equipment is reelected; and the cell determined according to the notification information performs downlink transmission to the user equipment. By using the present invention, the next-generation base station can know the cell where the user equipment in an inactive state is located, and timely and effective transmission can be implemented according to the condition in which the cell has data that needs to be transmitted on the user equipment. When the position of the terminal is effectively managed by using the present invention, signaling overheads on a network side and a terminal side are reduced, and it can be ensured that the terminal is power-saving.

Description

Terminal position information reporting and downlink transmission method and device

This application claims the priority of the Chinese Patent Application filed on January 4, 2017, the Chinese Patent Office, the application number is 201710005683.3, and the invention is entitled "A terminal location information reporting, downlink transmission method and device", the entire contents of which are incorporated by reference. Combined in this application.

Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a terminal location information reporting and downlink transmission method and apparatus.

Background technique

The new generation wireless communication system supports three RRC (Radio Resource Control) states, RRC_IDLE, RRC_INACTIVE, and RRC_CONNECTED (referred to as idle state, RRC_INACTIVE state, and connected state, or idle state, inactive state, and connected state). The functions supported by various RRC states are as follows:

1.RRC_IDLE:

- cell reselection;

- paging initiated by the core network;

- Core network for paging area management

2.RRC_INACTIVE:

- cell reselection;

- the core network and the NR RAN (NR: next generation radio, next generation wireless communication) remain connected;

- UE AS context (UE access layer context) is stored in the gNB (next generation NodeB) and the UE (User Equipment);

a notification mechanism initiated by the NR RAN in an RNA (RAN-based Notification Area);

-NR RAN performs RAN-based notification area management, ie RNA management;

The -NR RAN determines the access network side notification area to which the UE belongs.

3. RRC_CONNECTED:

- the UE maintains an RRC connection;

- the UE has an access layer context (AS context) of the NR;

- NR RAN knows the cell to which the UE belongs;

- UE can transmit unicast;

- Mobility controlled by the network side, ie switching.

The disadvantage of the prior art is that in the RRC_INACTIVE state, UE mobility is implemented by a cell reselection mechanism, and the cell reselection process is UE autonomous, and the network side is not required and cannot be notified. The management of the UE location on the network side is only within the RNA, ie the network side only knows which RAN notification area the UE is in, and does not know which cell of the RNA area the UE is in. In the Inactive, the mobility of the UE through cell reselection is beneficial to save the signaling overhead of the network side and the UE side. However, when there is downlink transmission on the network side, the network side needs to send a notification message to the UE in all cells of the entire RNA, even in all cells. The internal transmission of data, signaling and data overhead is very large, especially for the case where the network side needs to frequently send downlink data to the RRC_INACTIVE state UE.

Summary of the invention

The present invention provides a terminal location information reporting and downlink transmission method and apparatus for solving the problem of excessive signaling and data overhead when transmitting downlink data to an RRC_INACTIVE state UE.

The embodiment of the invention provides a terminal location information reporting method, including:

Determining that the UE has a cell reselection;

When it is determined that the UE is an RRC_INACTIVE state UE, the notification information is sent to the gNB to notify the gNB that the UE is reselected to the cell.

Preferably, the RRC_INACTIVE state UE transmits the notification information by transmitting an uplink transmission of any one of the following or a combination thereof in the reselected cell:

Transmitting, by the MAC CE, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission of the random access procedure;

Transmitting, by the RRC signaling, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission of the random access procedure;

Sending, by the MAC CE, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission initiated by the uplink scheduling resource;

Transmitting, by the RRC signaling, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission initiated by the uplink scheduling resource;

Transmitting, by the physical layer uplink control channel or the uplink pilot signal, the physical layer uplink indication information or the uplink pilot signal configured for the UE to send the notification information.

Preferably, the UE knows that the gNB needs to be notified of the cell to be reselected by one of the following ways or a combination thereof:

Obtained according to the system message broadcasted by the network side;

In the connected state, it is known according to the notification on the network side;

Obtaining according to the message that the network side notifies the UE to enter the RRC_INACTIVE state;

In the RRC_INACTIVE state, it is known according to the notification in the downlink data transmission process.

Preferably, when the system message broadcasted by the network side includes one of the following configuration information or a combination thereof, the UE learns that the gNB needs to be notified of the reselected cell, where the configuration information is: the UE type identifier, the service application. Layer identifier, bearer identifier of a specific service, logical channel number of a specific service, and stream identifier of a specific service;

Or, in the connection state, when the network side notifies one of the following configuration information or a combination thereof by the RRC reconfiguration signaling, the UE learns that the gNB needs to be notified of the reselected cell; or the network side notifies the UE to enter the RRC_INACTIVE state message. When one of the following configuration information is included or a combination thereof, the UE learns that the gNB needs to be notified of the reselected cell; or, when one of the following configuration information is notified during the downlink data transmission in the RRC_INACTIVE state, or a combination thereof, The UE is informed of the need to notify the gNB of the reselected cell, where the configuration information is: the application layer identifier, the bearer identifier, the logical channel number, the flow identifier, and the indication information of whether the UE initiates the cell change reporting mechanism.

Preferably, the UE is a UE that sends uplink data in an RRC_INACTIVE state.

Preferably, the UE is a UE that sends any uplink data in an RRC_INACTIVE state, or the UE is a UE that transmits uplink data of the specific service in an RRC_INACTIVE state.

Preferably, the method further comprises:

When the preset condition is satisfied, the gNB is notified of the cell to which the reselection is made.

The embodiment of the invention provides a downlink transmission method, including:

Receiving, by the UE, the notification information sent by the UE to the gNB, where the notification information is used to notify the gNB that the UE is reselected to the cell, and the UE is a UE in an RRC_INACTIVE state;

The cell determined according to the notification information performs downlink transmission to the UE.

Preferably, the notification information is sent by using one of the following or a combination of uplink transmissions sent by the UE to the reselected cell:

The UE sends the notification information by using the UE identifier in the RRC_INACTIVE state by using the MAC CE in the uplink transmission of the random access procedure;

The UE sends the notification information by using the RRC signaling to carry the UE identifier in the RRC_INACTIVE state in the uplink transmission of the random access procedure;

The UE sends the notification information by using the UE identifier in the RRC_INACTIVE state by the MAC CE in the uplink transmission initiated by the uplink scheduling resource.

The UE sends the notification information by using the UE identifier in the RRC_INACTIVE state through the RRC signaling in the uplink transmission initiated by the uplink scheduling resource.

The UE sends the notification information of the physical layer uplink indication information or the uplink pilot signal configured for the UE on the physical layer uplink control channel or the uplink pilot signal.

Preferably, one of the following notifications or a combination thereof is further included:

Notifying the UE of the reselected cell to the gNB when the cell is reselected by the broadcast system message;

Notifying the UE to notify the gNB of the cell to be reselected when the cell is reselected by the RRC signaling of the UE in the connected state;

Notifying the UE to notify the gNB of the cell to be reselected at the time of cell reselection by notifying the UE that the message enters the RRC_INACTIVE state;

When the UE is in the RRC_INACTIVE state, the downlink data transmission in the downlink data transmission process is notified to notify the UE of the reselected cell to the gNB when the cell is reselected.

Preferably, the UE is notified by the one or the combination of the following configuration information in the broadcast system message to inform the gNB of the reselected cell when the cell is reselected, where the configuration information is: the UE type identifier, the application layer of the service. The identifier, the bearer identifier of the specific service, the logical channel number of the specific service, and the flow identifier of the specific service;

Or, when the UE is in the connected state, notify the UE to notify the gNB of the reselected cell when the cell is reselected by one or a combination of the following configuration information in the RRC reconfiguration signaling; or, in the message notifying the UE to enter the RRC_INACTIVE state Include one of the following configuration information or a combination thereof to notify the UE to notify the gNB of the reselected cell when the cell is reselected; or, when the UE is in the RRC_INACTIVE state, notify the UE of the following configuration information by using a downlink data transmission procedure or a combination thereof When the cell is reselected, the gNB is notified of the reselected cell, where the configuration information is: the application layer identifier, the bearer identifier, the logical channel number, the flow identifier, and the indication information of whether the UE initiates the cell change reporting mechanism.

Preferably, in one of the following cases or a combination thereof, the UE is notified to notify the gNB of the cell to be reselected when the cell is reselected:

The UE is configured to have a corresponding downlink service when entering the RRC_INACTIVE state;

After the uplink data transmission, the UE has corresponding downlink data to be transmitted;

The UE is required to perform cell change reporting after entering the RRC_INACTIVE state by using 1 bit indication;

The UE enters the RRC_INACTIVE state with a 1-bit indication, and needs to perform cell change reporting after uplink data transmission.

Preferably, the method further comprises:

When the preset condition is met, the UE is notified to stop notifying the gNB of the cell to which the reselection is made.

An embodiment of the present invention provides a terminal location information reporting apparatus, including:

a determining module, configured to determine that cell reselection occurs in the UE;

The notification module is configured to send, when the UE is an RRC_INACTIVE state UE, notification information to the gNB, to notify the gNB that the UE is reselected to the cell.

Preferably, the notification module is further configured to send the notification information by transmitting an uplink transmission of any one of the following or a combination thereof in the cell to which the reselection is sent:

Sending the notification information by the MAC CE carrying the UE identifier in the RRC_INACTIVE state in the uplink transmission of the random access procedure;

Transmitting, by the RRC signaling, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission of the random access procedure;

Sending, by the MAC CE, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission initiated by the uplink scheduling resource;

Transmitting, by the RRC signaling, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission initiated by the uplink scheduling resource;

Transmitting the physical layer uplink indication information or the uplink pilot signal configuration notification information configured for the UE on the physical layer uplink control channel or the uplink pilot signal.

Preferably, the method further comprises:

The receiving notification module is configured to notify the gNB of the cell to be reselected by one of the following methods or a combination thereof:

Obtained according to the system message broadcasted by the network side;

In the connected state, it is known according to the notification on the network side;

Obtaining according to the message that the network side notifies the UE to enter the RRC_INACTIVE state;

In the RRC_INACTIVE state, it is known according to the notification in the downlink data transmission process.

Preferably, the receiving notification module is further configured to: when the system message broadcasted by the network side includes one of the following configuration information or a combination thereof, it is required to notify the gNB of the reselected cell, where the configuration information is: the UE type identifier, The application layer identifier of the service, the bearer identifier of the specific service, the logical channel number of the specific service, and the flow identifier of the specific service;

Alternatively, the network side notifies that the gNB needs to be notified of the reselected cell when the network side notifies the following configuration information by using RRC reconfiguration signaling, or the network side includes the following in the message notifying the UE to enter the RRC_INACTIVE state. When one or a combination of the configuration information is obtained, it is known that the gNB needs to be notified of the reselected cell; or, when one of the following configuration information or a combination thereof is notified during the downlink data transmission in the RRC_INACTIVE state, it is known that the gNB needs to be notified of the reselection to The configuration information is: the application layer identifier of the service, the bearer identifier, the logical channel number, the flow identifier, and the indication information of whether the UE initiates the cell change reporting mechanism.

Preferably, the notification module is further configured to notify the gNB of the cell to be reselected when the UE is the UE that sends the uplink data in the RRC_INACTIVE state.

Preferably, the notifying module is further configured to notify the gNB of the reselected cell when the UE is a UE that sends any uplink data in the RRC_INACTIVE state, or send the UE in the RRC_INACTIVE state. When the UE of the uplink data of the specific service is described, the gNB is notified of the cell to be reselected.

Preferably, the notification module is further configured to stop notifying the gNB of the cell to be reselected when the preset condition is met.

The embodiment of the invention provides a downlink transmission device, including:

a receiving module, configured to receive, by the UE, the notification information that is sent by the UE to the gNB, where the notification information is used to notify the gNB that the UE is reselected to the cell, and the UE is a UE in an RRC_INACTIVE state;

And a transmitting module, configured to perform downlink transmission to the UE by the cell determined according to the notification information.

Preferably, the receiving module is further configured to receive, by the UE, the notification information sent by the uplink transmission of one or a combination of the following:

The UE carries the notification information sent by the UE identifier in the RRC_INACTIVE state by using the MAC CE in the uplink transmission of the random access procedure;

The UE carries the notification information sent by the UE identifier in the RRC_INACTIVE state by using the RRC signaling in the uplink transmission of the random access procedure;

The UE carries the notification information sent by the UE identifier in the RRC_INACTIVE state by using the MAC CE in the uplink transmission initiated by the uplink scheduling resource;

The UE carries the notification information sent by the UE identifier in the RRC_INACTIVE state through the RRC signaling in the uplink transmission initiated by the uplink scheduling resource;

The UE sends the physical layer uplink indication information configured for the UE or the notification information of the uplink pilot signal transmission on the physical layer uplink control channel or the uplink pilot signal.

Preferably, the method further comprises:

The notification reporting module is configured to notify the UE to notify the gNB of the reselected cell when the cell is reselected according to one of the following notifications or a combination thereof:

Notifying the UE of the reselected cell to the gNB when the cell is reselected by the broadcast system message;

Notifying the UE to notify the gNB of the cell to be reselected when the cell is reselected by the RRC signaling of the UE in the connected state;

Notifying the UE to notify the gNB of the cell to be reselected at the time of cell reselection by notifying the UE that the message enters the RRC_INACTIVE state;

When the UE is in the RRC_INACTIVE state, the downlink data transmission in the downlink data transmission process is notified to notify the UE of the reselected cell to the gNB when the cell is reselected.

Preferably, the notification reporting module is further configured to notify the UE to notify the gNB of the reselected cell when the cell is reselected by including one of the following configuration information or a combination thereof in the broadcast system message, where the configuration information is: UE type Identification, application layer identifier of the service, bearer identifier of the specific service, logical channel number of the specific service, and flow identifier of the specific service;

Or, when the UE is in the connected state, notify the UE to notify the gNB of the reselected cell when the cell is reselected by one or a combination of the following configuration information in the RRC reconfiguration signaling; or, in the message notifying the UE to enter the RRC_INACTIVE state Include one of the following configuration information or a combination thereof to notify the UE to notify the gNB of the reselected cell when the cell is reselected; or, when the UE is in the RRC_INACTIVE state, notify the UE of the following configuration information by using a downlink data transmission procedure or a combination thereof When the cell is reselected, the gNB is notified of the reselected cell, where the configuration information is: the application layer identifier, the bearer identifier, the logical channel number, the flow identifier, and the indication information of whether the UE initiates the cell change reporting mechanism.

Preferably, the notification reporting module is further configured to notify the UE to notify the gNB of the cell to be reselected when the cell is reselected in one of the following situations or a combination thereof:

The UE is configured to have a corresponding downlink service when entering the RRC_INACTIVE state;

After the uplink data transmission, the UE has corresponding downlink data to be transmitted;

The UE is required to perform cell change reporting after entering the RRC_INACTIVE state by using 1 bit indication;

The UE enters the RRC_INACTIVE state with a 1-bit indication, and needs to perform cell change reporting after uplink data transmission.

Preferably, the notification reporting module is further configured to notify the UE to stop notifying the gNB of the cell to be reselected when the preset condition is met.

Another device for reporting terminal location information provided by the embodiment of the present application includes:

a memory for storing program instructions;

a processor, configured to invoke a program instruction stored in the memory, and execute according to the obtained program:

Determining that the user equipment UE performs cell reselection;

When it is determined that the UE is an inactive RRC_INACTIVE state UE, the notification information is sent to the next generation base station gNB to notify the gNB that the UE is reselected to the cell.

Another downlink transmission apparatus provided in this embodiment of the present application includes:

a memory for storing program instructions;

a processor, configured to invoke a program instruction stored in the memory, and execute according to the obtained program:

Receiving, by the UE, the notification information sent by the UE to the gNB, where the notification information is used to notify the gNB that the UE is reselected to the cell, and the UE is a UE in an RRC_INACTIVE state;

The cell determined according to the notification information performs downlink transmission to the UE.

A computer storage medium provided by the embodiment of the present application is stored with computer executable instructions, and the computer executable instructions are used to cause the computer to perform any of the methods provided in the embodiments of the present application.

The beneficial effects of the present invention are as follows:

In the technical solution provided by the embodiment of the present invention, the UE in the RRC_INACTIVE state notifies the cell to which the gNB is reselected when the cell reselection occurs. Therefore, the gNB can know the cell where the UE in the RRC_INACTIVE state is located, and thus can implement timely and effective transmission according to the cell when the UE has data transmission.

Further, when the scheme is used for effective terminal location management, the signaling overhead of the network side and the terminal side is saved, and the terminal can save power.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a schematic flowchart of an implementation process of a terminal location information reporting method on a UE side according to an embodiment of the present invention;

2 is a schematic flowchart of an implementation process of a downlink transmission method on a gNB side according to an embodiment of the present invention;

3 is a schematic structural diagram of a terminal location information reporting apparatus according to an embodiment of the present invention;

4 is a schematic structural diagram of a downlink transmission apparatus according to an embodiment of the present invention;

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

FIG. 6 is a schematic structural diagram of a gNB according to an embodiment of the present invention.

detailed description

A new generation wireless communication system (NR system or 5G system) introduces a terminal state RRC_INACTIVE state. In this state, the terminal maintains the core network connection, but there is no air interface connection, that is, there is no connection relationship with the specific cell at any time for data transmission. . The management granularity of the network side to the terminal location is the RAN side notification area RNA (RAN Notification Area), and the RNA usually includes a plurality of cells. This makes it possible for the UE to perform mobility through cell reselection under Inactive to save network side and UE side signaling overhead. However, when there is downlink transmission on the network side, the network side needs to send a notification message to the UE in all cells of the entire RNA, even Transmitting data in all cells will undoubtedly increase the signaling and data overhead, especially for the network side to frequently send downlink data to the RRC_INACTIVE state UE.

Based on this, the technical solution provided by the embodiment of the present invention will solve the problem of how to save the signaling overhead of the network side and the terminal side when the effective terminal location management is performed, and ensure the power saving of the terminal, and also realize when the terminal has data transmission. Timely and efficient transmission. The specific point is that when a specific type of UE or a UE with a specific service reselects to another cell, the cell change report is sent to the network side (also referred to as a cell change reporting mechanism in the embodiment), and the specific The specification of the type UE or UE with specific service may be determined by the network side configuration or by the UE itself. Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

In the description process, the implementations from the UE and the base station side will be respectively explained, and then an example in which the two are implemented together will be given to better understand the implementation of the solution given in the embodiment of the present invention. This description does not mean that the two must cooperate with the implementation, or must be implemented separately. In fact, when the UE is implemented separately from the base station, it also solves the problems on the UE side and the base station side, and when the two are combined, Get better technical results.

FIG. 1 is a schematic flowchart of a method for implementing terminal location information reporting on a UE side, as shown in the figure, which may include:

Step 101: Determine that cell reselection occurs in the UE.

Step 102: When it is determined that the UE is an RRC_INACTIVE UE, send notification information to the gNB to notify the gNB of the cell to which the UE is reselected.

2 is a schematic flowchart of an implementation process of a downlink transmission method on a gNB side, as shown in the figure, which may include:

Step 201: Receive notification information that is sent by the UE to the gNB, where the notification information is used to notify the gNB that the UE is reselected to the cell, and the UE is a UE in an RRC_INACTIVE state;

Step 202: The cell determined according to the notification information performs downlink transmission to the UE.

In the implementation, the cell change reporting mechanism means that the RRC_INACTIVE state UE initiates uplink transmission to the gNB when the cell is reselected to other cells, and notifies the gNB of the cell where the UE is currently located. The uplink transmission can be:

The UE initiates a random access procedure, and carries the RRC_INACTIVE state UE through the MAC CE (Media Access Control Control Unit; MAC: Media Access Control, Media Access Control; CE: Control Element, Control Unit) in the uplink transmission of the random access procedure. ID (UE identity in the RRC_INACTIVE state); or

The UE sends a random access procedure, and carries RRC signaling in the uplink transmission of the random access procedure, where the RRC signaling carries the RRC_INACTIVE state UE ID; or

The UE initiates an uplink transmission on an uplink grant-free resource, where the RRC_INACTIVE state UE ID is carried by the MAC CE; or

The UE initiates an uplink transmission on the uplink grant-free resource, and carries the RRC signaling in the uplink transmission, where the RRC signaling carries the RRC_INACTIVE state UE ID;

The UE sends the physical layer uplink indication information or the uplink pilot signal configured for the UE to the base station to notify by using the physical layer uplink control channel or the uplink pilot signal.

That is, on the UE side, the RRC_INACTIVE state UE transmits the notification information by transmitting the following one or a combination of the uplink transmissions to the cell to which the reselection:

Transmitting, by the MAC CE, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission of the random access procedure;

Transmitting, by the RRC signaling, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission of the random access procedure;

Sending, by the MAC CE, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission initiated by the uplink scheduling resource;

Transmitting, by the RRC signaling, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission initiated by the uplink scheduling resource;

Transmitting, by the physical layer uplink control channel or the uplink pilot signal, the physical layer uplink indication information or the uplink pilot signal configured for the UE to send the notification information.

On the gNB side, the notification information is sent by using one of the following or a combination of uplink transmissions sent by the UE to the reselected cell:

The UE sends the notification information by using the UE identifier in the RRC_INACTIVE state by using the MAC CE in the uplink transmission of the random access procedure;

The UE sends the notification information by using the RRC signaling to carry the UE identifier in the RRC_INACTIVE state in the uplink transmission of the random access procedure;

The UE sends the notification information by using the UE identifier in the RRC_INACTIVE state by the MAC CE in the uplink transmission initiated by the uplink scheduling resource.

The UE sends the notification information by using the UE identifier in the RRC_INACTIVE state through the RRC signaling in the uplink transmission initiated by the uplink scheduling resource.

The UE sends the notification information of the physical layer uplink indication information or the uplink pilot signal configured for the UE on the physical layer uplink control channel or the uplink pilot signal.

The following describes the network side configuration and the way the UE determines itself.

First, the network configuration.

On the UE side, the UE is one of the following UEs or a combination thereof:

Configuration mode 1: According to the system message broadcasted by the network side, the UE that needs to notify the gNB is learned;

Configuration mode 2: In the connected state, the UE that needs to notify the gNB is informed according to the notification on the network side;

Configuration mode 3: According to the message that the network side notifies the UE to enter the RRC_INACTIVE state, the UE that needs to notify the gNB is learned;

Configuration mode 4: In the RRC_INACTIVE state, the UE that needs to notify the gNB is learned according to the notification in the downlink data transmission process.

In the implementation, the configuration mode is as follows: when the system message broadcasted by the network side includes one of the following configuration information or a combination thereof, the UE learns that the gNB needs to be notified of the reselected cell, where the configuration information is: the UE type identifier, The application layer identifier of the service, the bearer identifier of the specific service, the logical channel number of the specific service, and the flow identifier of the specific service;

or,

Configuration mode 2: When the network side notifies one of the following configuration information or a combination thereof by the RRC reconfiguration signaling, the UE learns that the gNB needs to be notified of the reselected cell; or, configuration mode 3: the network side is notified When the message that the UE enters the RRC_INACTIVE state includes one of the following configuration information or a combination thereof, the UE learns that the gNB needs to be notified of the reselected cell; or, configuration mode 4: notifies the following configuration during the downlink data transmission in the RRC_INACTIVE state When one of the information or a combination thereof, the UE learns that the gNB needs to be notified of the reselected cell, where the configuration information is: the application layer identifier, the bearer identifier, the logical channel number, the flow identifier of the service, and whether the UE initiates the cell change. The indication information of the reporting mechanism.

Correspondingly, on the gNB side, one of the following notifications or a combination thereof may be further included:

Configuration mode 1: notify the UE to report the cell to be reselected when the cell is reselected by using the broadcast system message.

Configuration mode 2: when the UE is in the connected state, notify the UE to report the cell to which the cell is reselected when the cell is reselected;

Configuration mode 3: notify the UE to report the reselected cell when the cell is reselected by notifying the UE to enter the RRC_INACTIVE state message;

Configuration mode 4: When the UE is in the RRC_INACTIVE state, the UE is notified by the downlink data transmission process to report the cell to which the cell is reselected when the cell is reselected.

In the implementation, the configuration mode is as follows: the UE is configured to notify the gNB of the reselected cell when the cell is reselected by including one of the following configuration information or a combination thereof in the broadcast system message, where the configuration information is: UE type identifier, service Application layer identifier, bearer identifier of a specific service, logical channel number of a specific service, and stream identifier of a specific service;

or,

Configuration mode 2: when the UE is in the connected state, notify the UE to notify the reselected cell to the gNB when the cell is reselected by one of the following configuration information or a combination thereof in the RRC reconfiguration signaling; or, configuration mode 3: notifying the UE The message that enters the RRC_INACTIVE state includes one of the following configuration information or a combination thereof to notify the UE to notify the gNB of the reselected cell when the cell reselects; or, configuration mode 4: notify the following through the downlink data transmission process when the UE is in the RRC_INACTIVE state The one or a combination of the configuration information notifies the UE to notify the gNB of the reselected cell when the cell is reselected, where the configuration information is: the application layer identifier, the bearer identifier, the logical channel number, the flow identifier of the service, and whether the UE starts the cell. Change the indication information of the reporting mechanism.

When the UE that needs to be reported is specifically determined, the UE is notified to report the cell to be reselected when the cell is reselected in one of the following cases or a combination thereof:

The UE is configured to have a corresponding downlink service when entering the RRC_INACTIVE state;

After the uplink data transmission, the UE has corresponding downlink data to be transmitted;

The UE is required to perform cell change reporting after entering the RRC_INACTIVE state by using 1 bit indication;

The UE enters the RRC_INACTIVE state with a 1-bit indication, and needs to perform cell change reporting after uplink data transmission.

The specific implementation of the four configuration modes will be described below in the manner in which the UE side and the base station side cooperate.

1, configuration method one:

The network side notifies the configuration information of the UE type or service type of the RRC_INACTIVE state UE that needs to be reported by the cell in the broadcast system message. The network side may reconfigure the cell change reporting mechanism, and the reconfiguration mode is to send an updated system message, where the updated system message includes new configuration information.

The configuration information may be any one of the following: a UE type identifier (such as an eMTC (Enhanced Machine Type Communication) UE, or a URLLC (Ultra Reliable & Low Latency Communication) UE, Or UE capability level), or application layer identifier (AP ID) of a specific service, or a bearer identifier (RB ID) of a specific service, or a logical channel number (LCID) of a specific service, or a flow ID of a specific service (flow ID) .

2. Configuration method 2:

When the UE is in the connected state, the network side is notified by the RRC reconfiguration signaling that the UE needs to perform cell change reporting in the specific service configuration after entering the RRC_INACTIVE state, and the specific service refers to:

1) The specific downlink service configured by the UE, that is, if the UE has a corresponding downlink service configuration when entering the RRC_INACTIVE state, the cell change report needs to be performed.

2) a downlink service associated with a specific uplink transmission, such as a TCP ACK packet that is sent by the UE in the downlink direction of the uplink transmission after the uplink transmission is sent, that is, after the UE enters the RRC_INACTIVE state, if a specific service uplink transmission is sent, Then, the cell change reporting mechanism is started.

3) After 1 bit is used to indicate that the UE enters the RRC_INACTIVE state, the cell change report is performed.

4) After 1 bit is used to indicate that the UE enters the RRC_INACTIVE state, after the uplink transmission is sent, the cell change report is performed.

The configuration information may be any one of the following: an application layer identifier (AP ID) of the service, or a bearer identifier (RB ID), or a logical channel number (LCID), or a flow identifier (flow ID), or the UE is indicated by only 1 bit. Whether to initiate the cell change reporting mechanism.

3, configuration method three:

The network side, in the message that informs the UE to enter the RRC_INACTIVE state, such as the RRC release (RRC release) signaling, indicates which specific service configuration of the UE needs to perform cell change reporting, and the specific service refers to:

1) a downlink service associated with a specific uplink transmission, such as a TCP ACK packet that is sent by the UE in the downlink direction of the uplink transmission after the uplink transmission is sent, that is, after the UE enters the RRC_INACTIVE state, if a specific service uplink transmission is sent, Then, the cell change reporting mechanism is started.

2) After 1 bit is used to indicate that the UE enters the RRC_INACTIVE state, the cell change report is performed.

3) After 1 bit is used to indicate that the UE enters the RRC_INACTIVE state, after the uplink transmission is sent, the cell change report is performed.

The configuration information may be any one of the following: an application layer identifier (AP ID) of the service, or a bearer identifier (RB ID), or a logical channel number (LCID), or a flow identifier (flow ID), or the UE is indicated by only 1 bit. Whether to initiate the cell change reporting mechanism.

4, configuration method four:

The network side in the inactive state informs the UE to determine the configuration information of the cell change reporting mechanism by means of RRC signaling or MAC layer control message (MAC CE) or physical layer control signaling in the downlink data transmission process.

The configuration information may be any one of the following: an application layer identifier (AP ID) of the service, or a bearer identifier (RB ID), or a logical channel number (LCID), or a flow identifier (flow ID), or the UE is indicated by only 1 bit. Whether to initiate the cell change reporting mechanism.

2. The UE determines itself.

The UE determined by itself is a UE that transmits uplink data in the RRC_INACTIVE state.

In an implementation, the UE is a UE that sends any uplink data in an RRC_INACTIVE state, or the UE is a UE that transmits uplink data of the specific service in an RRC_INACTIVE state.

Specifically, the UE determines by itself that the UE initiates the cell change reporting mechanism after transmitting the uplink transmission in the RRC_INACTIVE state.

The method includes: after the UE sends any uplink data transmission, starts a cell change reporting mechanism, or after the UE sends an uplink data transmission of a specific service, starts a cell change reporting mechanism. After transmitting the uplink data in the buffer and receiving the corresponding downlink transmission, the UE may stop the cell change reporting mechanism by itself, that is, after the UE reselects to other cells by using the cell reselection mechanism, the UE does not notify the network side.

The following is an example.

Embodiment 1:

In this example, the UE determines to initiate the cell change reporting mechanism.

The UE side does not notify the network side when updating to the new cell by using the cell reselection mode before the RRC_INACTIVE state UE transmits data.

A: After the RRC_INACTIVE state sends the uplink transmission, or after transmitting the uplink transmission of the specific service (the specific service is specified by the protocol), the cell change reporting mechanism is enabled;

2. The UE performs cell reselection. If the cell is reselected to other cells, the cell change report is sent. The reporting mode is any one of four types of cell change reporting mechanisms;

Third: receiving a downlink notification message and/or downlink data transmission in a cell where the UE is located.

Network side:

A: The cell location before the UE enters the RRC_INACTIVE state is the initial cell location information, and receives the uplink transmission sent by the RRC_INACTIVE state UE, and updates the location of the cell where the UE is located;

2: receiving the cell change reporting information sent by the RRC_INACTIVE state UE, and updating the location of the cell where the UE is located;

Third: When there is downlink transmission, a notification message and/or downlink data transmission is sent to the UE in the cell where the newly determined UE is located.

Embodiment 2:

In this example, the network side notifies the cell change reporting mechanism configuration through a system message.

UE side:

A: receiving a system message broadcasted by the network side, and determining a UE type and/or a service type that needs to be activated by the cell change reporting mechanism, and the specific network side configuration mode is the network side configuration mode 1;

2: The RRC_INACTIVE state UE starts the cell change reporting mechanism when the condition of the initiation cell change reporting mechanism configured by the system message is met;

3. The UE performs cell reselection. If the cell is reselected to other cells, the cell is sent to the cell for change reporting, and the reporting mode is any one of four types of cell change reporting mechanisms.

Fourth: receiving a downlink notification message and/or downlink data transmission in a cell where the UE is located.

Network side:

A: sending a system message, where the configuration information of the cell change reporting mechanism is started, and the specific network side configuration mode is the network side configuration mode 1;

2: The cell location before the UE enters the RRC_INACTIVE state is the initial cell location information, and receives the uplink transmission sent by the RRC_INACTIVE state UE, and updates the location of the cell where the UE is located;

Third: receiving the cell change reporting information sent by the UE in the RRC_INACTIVE state, and updating the location of the cell where the UE is located;

Fourth: When there is downlink transmission, a notification message and/or downlink data transmission is sent to the UE in the cell where the newly determined UE is located.

Embodiment 3:

In this example, the network side notifies the connected state UE of the cell change reporting mechanism by RRC signaling.

UE side:

A: the connected state UE receives the network side RRC reconfiguration message or the RRC connection release message, and determines the cell change reporting mechanism configuration information. The specific configuration information sending mode is the network side configuration mode 2 or the network side configuration mode 3;

2: The UE enters the RRC_INACTIVE state, and the RRC_INACTIVE state UE starts the cell change reporting mechanism when the condition of the cell change reporting mechanism is met.

3. The UE performs cell reselection. If the cell is reselected to other cells, the cell is sent to the cell for change reporting, and the reporting mode is any one of four types of cell change reporting mechanisms.

Fourth: receiving a downlink notification message and/or downlink data transmission in a cell where the UE is located.

Network side:

The RRC reconfiguration message or the RRC connection release message is sent to the connected UE to notify the UE to enter the RRC_INACTIVE state of the cell change reporting mechanism configuration information. The specific configuration information sending mode is the network side configuration mode 2 or the network side configuration mode 3;

2: After determining that the UE enters the RRC_INACTIVE state, the UE before the UE enters the RRC_INACTIVE state is the UE location cell, receives the uplink transmission sent by the RRC_INACTIVE state UE, and updates the location information of the cell where the UE is located;

Third: receiving the cell change reporting information sent by the UE in the RRC_INACTIVE state, and updating the location of the cell where the UE is located;

Fourth: When there is downlink transmission, a notification message and/or downlink data transmission is sent to the UE in the cell where the newly determined UE is located.

Embodiment 4:

In this example, the network side updates the cell change reporting mechanism configuration through the system message.

UE side:

A: receiving the system message broadcasted by the network side, and replacing the configuration information of the startup cell change reporting mechanism stored in the UE by using the startup cell change reporting mechanism configuration information in the system message, and the specific network side configuration mode is the network side configuration mode 1;

2: The RRC_INACTIVE state UE starts the cell change reporting mechanism when the condition of the initiation cell change reporting mechanism configured by the system message is met;

3. The UE performs cell reselection. If the cell is reselected to other cells, the cell is sent to the cell for change reporting, and the reporting mode is any one of four types of cell change reporting mechanisms.

Fourth: receiving a downlink notification message and/or downlink data transmission in a cell where the UE is located.

Network side:

A: when the RRC_INACTIVE state of the UE cell change reporting mechanism is started, the system message is sent, and the system message includes the configuration information of the new cell change reporting mechanism, and the specific network side configuration mode is the network side configuration mode 1;

2: The cell location before the UE enters the RRC_INACTIVE state is the initial cell location information, and receives the uplink transmission sent by the RRC_INACTIVE state UE, and updates the location of the cell where the UE is located;

Third: receiving the cell change reporting information sent by the UE in the RRC_INACTIVE state, and updating the location of the cell where the UE is located;

Fourth: When there is downlink transmission, a notification message and/or downlink data transmission is sent to the UE in the cell where the newly determined UE is located.

Embodiment 5:

In this example, the network side performs a cell change reporting mechanism configuration on the RRC_INACTIVE state UE.

UE side:

A: The RRC_INACTIVE state UE receives the downlink transmission, and receives the configuration information of the cell change reporting mechanism in the downlink transmission, and the specific configuration information transmission mode is the network side configuration mode 4;

Two: The UE starts the cell change reporting mechanism when the conditions for the change of the cell reporting mechanism are met.

3. The UE performs cell reselection. If the cell is reselected to other cells, the cell is sent to the cell for change reporting, and the reporting mode is any one of four types of cell change reporting mechanisms.

Fourth: receiving a downlink notification message and/or downlink data transmission in a cell where the UE is located.

Network side:

A: The RRC_INACTIVE state, when the UE sends the downlink transmission, carries the configuration information of the cell change reporting mechanism, and the specific configuration information transmission mode is the network side configuration mode 4;

2: receiving an uplink transmission sent by the RRC_INACTIVE state UE, and determining location information of the cell where the UE is located;

Third: receiving the cell change reporting information sent by the UE in the RRC_INACTIVE state, and updating the location of the cell where the UE is located;

Fourth: When there is downlink transmission, a notification message and/or downlink data transmission is sent to the UE in the cell where the newly determined UE is located.

In the above embodiment, if the condition for initiating the cell change reporting mechanism is no longer satisfied, or the network side notifies the UE (system message or UE-specific signaling) to terminate the cell change reporting, the cell change reporting mechanism is stopped.

Based on the same inventive concept, the embodiment of the present invention further provides a cell information reporting device and a downlink transmission device. The principle of solving the problem is similar to a cell information reporting method and a downlink transmission method. The implementation of the device can be referred to the implementation of the method, and the details are not repeated here.

FIG. 3 is a schematic structural diagram of a terminal location information reporting apparatus, as shown in the figure, which may include:

a determining module 301, configured to determine that cell reselection occurs in the UE;

The notification module 302 is configured to, when determining that the UE is an RRC_INACTIVE state UE, send notification information to the gNB to notify the gNB that the UE is reselected to the cell.

In an implementation, the notification module is further configured to send the notification information by sending an uplink transmission of any one of the following or a combination thereof to the cell that is reselected:

Sending the notification information by the MAC CE carrying the UE identifier in the RRC_INACTIVE state in the uplink transmission of the random access procedure;

Transmitting, by the RRC signaling, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission of the random access procedure;

Sending, by the MAC CE, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission initiated by the uplink scheduling resource;

Transmitting, by the RRC signaling, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission initiated by the uplink scheduling resource;

Transmitting the physical layer uplink indication information or the uplink pilot signal configuration notification information configured for the UE on the physical layer uplink control channel or the uplink pilot signal.

In implementation, it further includes:

The receiving notification module 303 is configured to notify the gNB of the cell to be reselected by one of the following manners or a combination thereof:

Obtained according to the system message broadcasted by the network side;

In the connected state, it is known according to the notification on the network side;

Obtaining according to the message that the network side notifies the UE to enter the RRC_INACTIVE state;

In the RRC_INACTIVE state, it is known according to the notification in the downlink data transmission process.

In the implementation, the receiving notification module is further configured to: when the system message broadcasted by the network side includes one of the following configuration information or a combination thereof, it is required to notify the gNB of the reselected cell, where the configuration information is: the UE type identifier, the service Application layer identifier, bearer identifier of a specific service, logical channel number of a specific service, and stream identifier of a specific service;

or,

When the network side is notified of one of the following configuration information or a combination thereof by the RRC reconfiguration signaling, it is known that the gNB needs to be notified of the reselected cell; or the network side includes the following configuration information in the message notifying the UE to enter the RRC_INACTIVE state. When one or a combination thereof, it is known that the cell to be reselected needs to be notified to the gNB; or, when one of the following configuration information or a combination thereof is notified during downlink data transmission in the RRC_INACTIVE state, it is known that the cell to be reselected needs to be notified to the gNB. The configuration information is: an application layer identifier of the service, a bearer identifier, a logical channel number, a flow identifier, and indication information of whether the UE initiates a cell change reporting mechanism.

In the implementation, the notification module is further configured to notify the gNB of the cell to be reselected when the UE is the UE that sends the uplink data in the RRC_INACTIVE state.

In an implementation, the notification module is further configured to notify the gNB of the reselected cell when the UE is a UE that sends any uplink data in the RRC_INACTIVE state, or send the UE in the RRC_INACTIVE state. When the UE of the uplink data of the specific service is notified to the gNB to the cell to be reselected.

In the implementation, the notification module is further configured to stop notifying the gNB of the cell to be reselected when the preset condition is met.

4 is a schematic structural diagram of a downlink transmission device, as shown in the figure, which may include:

The receiving module 401 is configured to receive the notification information that is sent by the UE to the gNB, where the notification information is used to notify the gNB that the UE is reselected to the cell, and the UE is a UE in an RRC_INACTIVE state;

The transmitting module 402 is configured to perform downlink transmission to the UE according to the cell determined by the notification information.

In an implementation, the receiving module is further configured to receive, by the UE, the notification information sent by the uplink transmission of one or a combination of the following ones sent by the reselected cell:

The UE carries the notification information sent by the UE identifier in the RRC_INACTIVE state by using the MAC CE in the uplink transmission of the random access procedure;

The UE carries the notification information sent by the UE identifier in the RRC_INACTIVE state by using the RRC signaling in the uplink transmission of the random access procedure;

The UE carries the notification information sent by the UE identifier in the RRC_INACTIVE state by using the MAC CE in the uplink transmission initiated by the uplink scheduling resource;

The UE carries the notification information sent by the UE identifier in the RRC_INACTIVE state through the RRC signaling in the uplink transmission initiated by the uplink scheduling resource;

The UE sends the physical layer uplink indication information configured for the UE or the notification information of the uplink pilot signal transmission on the physical layer uplink control channel or the uplink pilot signal.

In implementation, it further includes:

The notification reporting module 403 is configured to notify the UE to notify the gNB of the reselected cell when the cell is reselected according to one of the following notifications or a combination thereof:

Notifying the UE of the reselected cell to the gNB when the cell is reselected by the broadcast system message;

Notifying the UE to notify the gNB of the cell to be reselected when the cell is reselected by the RRC signaling of the UE in the connected state;

Notifying the UE to notify the gNB of the cell to be reselected at the time of cell reselection by notifying the UE that the message enters the RRC_INACTIVE state;

When the UE is in the RRC_INACTIVE state, the downlink data transmission in the downlink data transmission process is notified to notify the UE of the reselected cell to the gNB when the cell is reselected.

In an implementation, the notification reporting module is further configured to notify the UE to notify the gNB of the reselected cell when the cell reselection by including one of the following configuration information or a combination thereof in the broadcast system message, where the configuration information is: the UE type identifier The application layer identifier of the service, the bearer identifier of the specific service, the logical channel number of the specific service, and the flow identifier of the specific service;

or,

When the UE is in the connected state, the UE is notified to notify the UE of the reselected cell when the cell is reselected by one of the following configuration information or a combination thereof in the RRC reconfiguration signaling; or the following information is included in the message notifying the UE to enter the RRC_INACTIVE state; One of the configuration information or a combination thereof notifies the UE to notify the gNB of the reselected cell when the cell is reselected; or, when the UE is in the RRC_INACTIVE state, notifies one of the following configuration information or a combination thereof to notify the UE that the cell is heavy in the RRC_INACTIVE state. The gNB is notified of the reselected cell to the gNB, where the configuration information is: an application layer identifier, a bearer identifier, a logical channel number, a flow identifier, and an indication information of whether the UE initiates a cell change reporting mechanism.

In the implementation, the notification reporting module is further configured to notify the UE to notify the gNB of the cell to be reselected when the cell is reselected in one of the following situations or a combination thereof:

The UE is configured to have a corresponding downlink service when entering the RRC_INACTIVE state;

After the uplink data transmission, the UE has corresponding downlink data to be transmitted;

The UE is required to perform cell change reporting after entering the RRC_INACTIVE state by using 1 bit indication;

The UE enters the RRC_INACTIVE state with a 1-bit indication, and needs to perform cell change reporting after uplink data transmission.

In the implementation, the notification reporting module is further configured to notify the UE to stop notifying the gNB of the cell to be reselected when the preset condition is met.

For convenience of description, the various parts of the above described devices are described in terms of functions divided into various modules or units. Of course, the functions of the various modules or units may be implemented in one or more software or hardware in the practice of the invention.

When the technical solution provided by the embodiment of the present invention is implemented, it can be implemented as follows.

FIG. 5 is a schematic structural diagram of a UE. As shown in the figure, the user equipment includes:

The processor 500 is configured to read a program in the memory 520 and perform the following process:

Determining that the UE has a cell reselection;

When it is determined that the UE is an RRC_INACTIVE state UE, the transceiver 510 sends notification information to the gNB to notify the gNB that the UE is reselected to the cell.

In the implementation, the RRC_INACTIVE state UE sends the notification information by sending an uplink transmission of any one of the following or a combination thereof to the cell that is reselected:

Transmitting, by the MAC CE, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission of the random access procedure;

Transmitting, by the RRC signaling, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission of the random access procedure;

Sending, by the MAC CE, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission initiated by the uplink scheduling resource;

Transmitting, by the RRC signaling, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission initiated by the uplink scheduling resource;

Transmitting, by the physical layer uplink control channel or the uplink pilot signal, the physical layer uplink indication information or the uplink pilot signal configured for the UE to send the notification information.

In an implementation, the UE knows that the gNB needs to be notified of the cell to be reselected by one of the following manners or a combination thereof:

Obtained according to the system message broadcasted by the network side;

In the connected state, it is known according to the notification on the network side;

Obtaining according to the message that the network side notifies the UE to enter the RRC_INACTIVE state;

In the RRC_INACTIVE state, it is known according to the notification in the downlink data transmission process.

In an implementation, when the system message broadcasted by the network side includes one of the following configuration information or a combination thereof, the UE learns that the gNB needs to be notified of the reselected cell, where the configuration information is: the UE type identifier, the application layer of the service. The identifier, the bearer identifier of the specific service, the logical channel number of the specific service, and the flow identifier of the specific service;

or,

In the connection state, when the network side notifies one of the following configuration information or a combination thereof by the RRC reconfiguration signaling, the UE learns that the gNB needs to be notified of the reselected cell; or the network side includes in the message notifying the UE to enter the RRC_INACTIVE state. When one of the following configuration information or a combination thereof is used, the UE learns that the gNB needs to be notified of the reselected cell; or, when one of the following configuration information or a combination thereof is notified during downlink data transmission in the RRC_INACTIVE state, the UE learns The gNB needs to be notified of the reselected cell, where the configuration information is: an application layer identifier, a bearer identifier, a logical channel number, a flow identifier, and an indication information of whether the UE initiates a cell change reporting mechanism.

In implementation, the UE is a UE that sends uplink data in an RRC_INACTIVE state.

In an implementation, the UE is a UE that sends any uplink data in an RRC_INACTIVE state, or the UE is a UE that transmits uplink data of the specific service in an RRC_INACTIVE state.

In implementation, it further includes:

When the preset condition is satisfied, the gNB is notified of the cell to which the reselection is made.

The transceiver 510 is configured to receive and transmit data under the control of the processor 500.

In FIG. 5, the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 500 and various circuits of memory represented by memory 520. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. Transceiver 510 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium. For different user equipments, the user interface 530 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 can store data used by the processor 500 when performing operations.

FIG. 6 is a schematic diagram of a gNB structure. As shown in the figure, the base station includes:

The processor 600 is configured to read a program in the memory 620 and perform the following process:

Data processing according to the needs of the transceiver;

Receiving, by the transceiver 610, the notification information that is sent by the UE to the gNB, where the notification information is used to notify the gNB that the UE is reselected to the cell, and the UE is a UE in an RRC_INACTIVE state;

The cell determined according to the notification information performs downlink transmission to the UE.

In implementation, the notification information is sent by using one of the following or a combination of uplink transmissions sent by the UE to the reselected cell:

The UE sends the notification information by using the UE identifier in the RRC_INACTIVE state by using the MAC CE in the uplink transmission of the random access procedure;

The UE sends the notification information by using the RRC signaling to carry the UE identifier in the RRC_INACTIVE state in the uplink transmission of the random access procedure;

The UE sends the notification information by using the UE identifier in the RRC_INACTIVE state by the MAC CE in the uplink transmission initiated by the uplink scheduling resource.

The UE sends the notification information by using the UE identifier in the RRC_INACTIVE state through the RRC signaling in the uplink transmission initiated by the uplink scheduling resource.

The UE sends the notification information of the physical layer uplink indication information or the uplink pilot signal configured for the UE on the physical layer uplink control channel or the uplink pilot signal.

In implementation, one of the following notifications or a combination thereof is further included:

Notifying the UE of the reselected cell to the gNB when the cell is reselected by the broadcast system message;

Notifying the UE to notify the gNB of the cell to be reselected when the cell is reselected by the RRC signaling of the UE in the connected state;

Notifying the UE to notify the gNB of the cell to be reselected at the time of cell reselection by notifying the UE that the message enters the RRC_INACTIVE state;

When the UE is in the RRC_INACTIVE state, the downlink data transmission in the downlink data transmission process is notified to notify the UE of the reselected cell to the gNB when the cell is reselected.

In an implementation, the UE is notified to notify the UE of the reselected cell when the cell is reselected by including one of the following configuration information in the broadcast system message, where the configuration information is: the UE type identifier, the application layer identifier of the service. , the bearer identifier of the specific service, the logical channel number of the specific service, and the flow identifier of the specific service;

or,

When the UE is in the connected state, the UE is notified to notify the UE of the reselected cell when the cell is reselected by one of the following configuration information or a combination thereof in the RRC reconfiguration signaling; or the following information is included in the message notifying the UE to enter the RRC_INACTIVE state; One of the configuration information or a combination thereof notifies the UE to notify the gNB of the reselected cell when the cell is reselected; or, when the UE is in the RRC_INACTIVE state, notifies one of the following configuration information or a combination thereof to notify the UE that the cell is heavy in the RRC_INACTIVE state. The gNB is notified of the reselected cell to the gNB, where the configuration information is: an application layer identifier, a bearer identifier, a logical channel number, a flow identifier, and an indication information of whether the UE initiates a cell change reporting mechanism.

In an implementation, in one of the following situations or a combination thereof, the UE is notified to notify the gNB of the cell to be reselected when the cell is reselected:

The UE is configured to have a corresponding downlink service when entering the RRC_INACTIVE state;

After the uplink data transmission, the UE has corresponding downlink data to be transmitted;

The UE is required to perform cell change reporting after entering the RRC_INACTIVE state by using 1 bit indication;

The UE enters the RRC_INACTIVE state with a 1-bit indication, and needs to perform cell change reporting after uplink data transmission.

In implementation, it further includes:

When the preset condition is met, the UE is notified to stop notifying the gNB of the cell to which the reselection is made.

The transceiver 610 is configured to receive and transmit data under the control of the processor 600.

Wherein, in FIG. 6, the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 600 and various circuits of memory represented by memory 620. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. Transceiver 610 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium. The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 can store data used by the processor 600 in performing operations.

In summary, in the technical solution provided by the embodiment of the present invention, a specific type of UE or a UE with a specific service sends a cell change report (referred to as a cell change reporting mechanism) to the network side when reselecting to another cell. The specification of the "specific type UE or UE with specific service" is determined by the network side configuration or the UE itself.

Further, four types of cell change reporting mechanisms, four network side configuration modes, and a manner determined by the UE are provided.

The terminal location information reporting apparatus according to any one of the foregoing embodiments of the present application may be any type of terminal equipment.

The terminal device may also be referred to as a user equipment (User Equipment, referred to as "UE"), a mobile station (Mobile Station, abbreviated as "MS"), a mobile terminal (Mobile Terminal), etc., optionally, the terminal may The ability to communicate with one or more core networks via a Radio Access Network (RAN), for example, the terminal can be a mobile phone (or "cellular" phone), or a computer with mobile nature, etc. For example, the terminal can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device.

The downlink transmission apparatus according to any one of the foregoing embodiments of the present application may be any type of network equipment, for example, any type of base station.

The network device may be a base station (e.g., an access point), referring to a device in the access network that communicates with the wireless terminal over one or more sectors over the air interface. The base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network. The base station can also coordinate attribute management of the air interface. For example, the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B) may also be a gNB in a 5G system, which is not limited in the embodiment.

The embodiment of the present application provides a computer storage medium for storing the computer program instructions used by the apparatus provided in the foregoing embodiment of the present application, and includes a program for executing any of the methods provided by the foregoing embodiments of the present application.

The computer storage medium can be any available media or data storage device accessible by a computer, including but not limited to magnetic storage (eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (eg, CD, DVD, BD, HVD, etc.), and semiconductor memories (for example, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state hard disk (SSD)).

The solution solves the problem of how to perform effective terminal location management, which not only saves signaling overhead on the network side and the terminal side, but also ensures that the terminal saves power, and can realize timely and effective transmission when the terminal has data transmission.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

While the preferred embodiment of the invention has been described, it will be understood that Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

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

Claims (27)

1. A terminal location information reporting method, comprising:

   Determining that the user equipment UE performs cell reselection;

   When it is determined that the UE is an inactive RRC_INACTIVE state UE, the notification information is sent to the next generation base station gNB to notify the gNB that the UE is reselected to the cell.
2. The method according to claim 1, wherein the RRC_INACTIVE state UE transmits the notification information by transmitting an uplink transmission of any one of the following or a combination thereof in the reselected cell:

   Transmitting, by the medium access control control unit MAC CE, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission of the random access procedure;

   Transmitting, by the radio resource control RRC signaling, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission of the random access procedure;

   Sending, by the MAC CE, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission initiated by the uplink scheduling resource;

   Transmitting, by the RRC signaling, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission initiated by the uplink scheduling resource;

   Transmitting, by the physical layer uplink control channel or the uplink pilot signal, the physical layer uplink indication information or the uplink pilot signal configured for the UE to send the notification information.
3. The method according to claim 1, wherein the UE knows that the gNB needs to be notified of the cell to be reselected by one of the following manners or a combination thereof:

   Obtained according to the system message broadcasted by the network side;

   In the connected state, it is known according to the notification on the network side;

   Obtaining according to the message that the network side notifies the UE to enter the RRC_INACTIVE state;

   In the RRC_INACTIVE state, it is known according to the notification in the downlink data transmission process.
4. The method of claim 3 wherein:

   When the system message broadcasted by the network side includes one of the following configuration information or a combination thereof, the UE learns that the gNB needs to be notified of the reselected cell, where the configuration information is: the UE type identifier, the application layer identifier of the service. , the bearer identifier of the specific service, the logical channel number of the specific service, and the flow identifier of the specific service;

   or,

   In the connection state, when the network side notifies one of the following configuration information or a combination thereof by the RRC reconfiguration signaling, the UE learns that the gNB needs to be notified of the reselected cell; or the network side includes in the message notifying the UE to enter the RRC_INACTIVE state. When one of the following configuration information or a combination thereof is used, the UE learns that the gNB needs to be notified of the reselected cell; or, when one of the following configuration information or a combination thereof is notified during downlink data transmission in the RRC_INACTIVE state, the UE learns The gNB needs to be notified of the reselected cell, where the configuration information is: an application layer identifier, a bearer identifier, a logical channel number, a flow identifier, and an indication information of whether the UE initiates a cell change reporting mechanism.
5. The method according to claim 1, wherein the UE is a UE that transmits any uplink data in an RRC_INACTIVE state, or the UE is a UE that transmits uplink data of a specific service in an RRC_INACTIVE state.
6. The method of any one of claims 1 to 5, further comprising:

   When the preset condition is satisfied, the gNB is notified of the cell to which the reselection is made.
7. A downlink transmission method, comprising:

   Receiving, by the UE, the notification information sent by the UE to the gNB, where the notification information is used to notify the gNB that the UE is reselected to the cell, and the UE is a UE in an RRC_INACTIVE state;

   The cell determined according to the notification information performs downlink transmission to the UE.
8. The method according to claim 7, wherein the notification information is sent by an uplink transmission of one or a combination of the following ones sent by the UE to the reselected cell:

   The UE sends the notification information by using the UE identifier in the RRC_INACTIVE state by using the MAC CE in the uplink transmission of the random access procedure;

   The UE sends the notification information by using the RRC signaling to carry the UE identifier in the RRC_INACTIVE state in the uplink transmission of the random access procedure;

   The UE sends the notification information by using the UE identifier in the RRC_INACTIVE state by the MAC CE in the uplink transmission initiated by the uplink scheduling resource.

   The UE sends the notification information by using the UE identifier in the RRC_INACTIVE state through the RRC signaling in the uplink transmission initiated by the uplink scheduling resource.

   The UE sends the notification information of the physical layer uplink indication information or the uplink pilot signal configured for the UE on the physical layer uplink control channel or the uplink pilot signal.
9. The method according to claim 7, wherein the method further comprises: notifying the UE of the need to notify the gNB of the cell to be reselected by one of the following notifications or a combination thereof:

   Notifying the UE of the reselected cell to the gNB when the cell is reselected by the broadcast system message;

   Notifying the UE to notify the gNB of the cell to be reselected when the cell is reselected by the RRC signaling of the UE in the connected state;

   Notifying the UE to notify the gNB of the cell to be reselected at the time of cell reselection by notifying the UE that the message enters the RRC_INACTIVE state;

   When the UE is in the RRC_INACTIVE state, the downlink data transmission in the downlink data transmission process is notified to notify the UE of the reselected cell to the gNB when the cell is reselected.
10. The method of claim 9 wherein:

    The UE is notified to notify the gNB of the reselected cell when the cell is reselected by including one of the following configuration information in the broadcast system message, where the configuration information is: the UE type identifier, the application layer identifier of the service, and the specific service. Bearer identifier, logical channel number of a specific service, stream identifier of a specific service;

    or,

    When the UE is in the connected state, the UE is notified to notify the UE of the reselected cell when the cell is reselected by one of the following configuration information or a combination thereof in the RRC reconfiguration signaling; or the following information is included in the message notifying the UE to enter the RRC_INACTIVE state; One of the configuration information or a combination thereof notifies the UE to notify the gNB of the reselected cell when the cell is reselected; or, when the UE is in the RRC_INACTIVE state, notifies one of the following configuration information or a combination thereof to notify the UE that the cell is heavy in the RRC_INACTIVE state. The gNB is notified of the reselected cell to the gNB, where the configuration information is: an application layer identifier, a bearer identifier, a logical channel number, a flow identifier, and an indication information of whether the UE initiates a cell change reporting mechanism.
11. The method according to claim 9 or 10, wherein the UE is notified to notify the gNB of the cell to be reselected when the cell is reselected in one of the following cases or a combination thereof:

    The UE is configured to have a corresponding downlink service when entering the RRC_INACTIVE state;

    After the uplink data transmission, the UE has corresponding downlink data to be transmitted;

    The UE is required to perform cell change reporting after entering the RRC_INACTIVE state by using 1 bit indication;

    The UE enters the RRC_INACTIVE state with a 1-bit indication, and needs to perform cell change reporting after uplink data transmission.
12. The method of any of claims 7 to 10, further comprising:

    When the preset condition is met, the UE is notified to stop notifying the gNB of the cell to which the reselection is made.
13. A terminal location information reporting device, comprising:

    a determining module, configured to determine that cell reselection occurs in the UE;

    The notification module is configured to send, when the UE is an RRC_INACTIVE state UE, notification information to the gNB, to notify the gNB that the UE is reselected to the cell.
14. The apparatus according to claim 13, wherein the notifying module is further configured to send the notification information by transmitting an uplink transmission of any one of the following or a combination thereof in the cell to which the reselection is:

    Sending the notification information by the MAC CE carrying the UE identifier in the RRC_INACTIVE state in the uplink transmission of the random access procedure;

    Transmitting, by the RRC signaling, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission of the random access procedure;

    Sending, by the MAC CE, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission initiated by the uplink scheduling resource;

    Transmitting, by the RRC signaling, the UE identifier in the RRC_INACTIVE state to send the notification information in the uplink transmission initiated by the uplink scheduling resource;

    Transmitting the physical layer uplink indication information or the uplink pilot signal configuration notification information configured for the UE on the physical layer uplink control channel or the uplink pilot signal.
15. The device of claim 13 further comprising:

    The receiving notification module is configured to notify the gNB of the cell to be reselected by one of the following methods or a combination thereof:

    Obtained according to the system message broadcasted by the network side;

    In the connected state, it is known according to the notification on the network side;

    Obtaining according to the message that the network side notifies the UE to enter the RRC_INACTIVE state;

    In the RRC_INACTIVE state, it is known according to the notification in the downlink data transmission process.
16. The apparatus according to claim 15, wherein the receiving notification module is further configured to: when the system message broadcasted by the network side includes one or a combination of the following configuration information, knowing that the gNB needs to be notified of the reselected cell, wherein The configuration information is: the UE type identifier, the application layer identifier of the service, the bearer identifier of the specific service, the logical channel number of the specific service, and the flow identifier of the specific service;

    or,

    When the network side is notified of one of the following configuration information or a combination thereof by the RRC reconfiguration signaling, it is known that the gNB needs to be notified of the reselected cell; or the network side includes the following configuration information in the message notifying the UE to enter the RRC_INACTIVE state. When one or a combination thereof, it is known that the cell to be reselected needs to be notified to the gNB; or, when one of the following configuration information or a combination thereof is notified during downlink data transmission in the RRC_INACTIVE state, it is known that the cell to be reselected needs to be notified to the gNB. The configuration information is: an application layer identifier of the service, a bearer identifier, a logical channel number, a flow identifier, and indication information of whether the UE initiates a cell change reporting mechanism.
17. The apparatus according to claim 13, wherein the notifying module is further configured to notify the gNB of the cell to be reselected when the UE is a UE that has sent any uplink data in an RRC_INACTIVE state, or When the UE transmits the uplink data of the specific service in the RRC_INACTIVE state, the UE notifies the gNB of the cell to be reselected.
18. The apparatus according to any one of claims 13 to 17, wherein the notification module is further configured to stop notifying the gNB of the cell to be reselected when the preset condition is met.
19. A downlink transmission device, comprising:

    a receiving module, configured to receive, by the UE, the notification information that is sent by the UE to the gNB, where the notification information is used to notify the gNB that the UE is reselected to the cell, and the UE is a UE in an RRC_INACTIVE state;

    And a transmitting module, configured to perform downlink transmission to the UE by the cell determined according to the notification information.
20. The apparatus according to claim 19, wherein the receiving module is further configured to receive, by the UE, the notification information of the uplink transmission sent by one of the following or a combination thereof sent by the reselected cell:

    The UE carries the notification information sent by the UE identifier in the RRC_INACTIVE state by using the MAC CE in the uplink transmission of the random access procedure;

    The UE carries the notification information sent by the UE identifier in the RRC_INACTIVE state by using the RRC signaling in the uplink transmission of the random access procedure;

    The UE carries the notification information sent by the UE identifier in the RRC_INACTIVE state by using the MAC CE in the uplink transmission initiated by the uplink scheduling resource;

    The UE carries the notification information sent by the UE identifier in the RRC_INACTIVE state through the RRC signaling in the uplink transmission initiated by the uplink scheduling resource;

    The UE sends the physical layer uplink indication information configured for the UE or the notification information of the uplink pilot signal transmission on the physical layer uplink control channel or the uplink pilot signal.
21. The device of claim 19, further comprising:

    The notification reporting module is configured to notify the UE to notify the gNB of the reselected cell when the cell is reselected according to one of the following notifications or a combination thereof:

    Notifying the UE of the reselected cell to the gNB when the cell is reselected by the broadcast system message;

    Notifying the UE to notify the gNB of the cell to be reselected when the cell is reselected by the RRC signaling of the UE in the connected state;

    Notifying the UE to notify the gNB of the cell to be reselected at the time of cell reselection by notifying the UE that the message enters the RRC_INACTIVE state;

    When the UE is in the RRC_INACTIVE state, the downlink data transmission in the downlink data transmission process is notified to notify the UE of the reselected cell to the gNB when the cell is reselected.
22. The apparatus according to claim 21, wherein the notification reporting module is further configured to notify the UE to notify the gNB of the cell to be reselected at the time of cell reselection by including one of the following configuration information or a combination thereof in the broadcast system message. The configuration information is: a UE type identifier, an application layer identifier of a service, a bearer identifier of a specific service, a logical channel number of a specific service, and a flow identifier of a specific service;

    or,

    When the UE is in the connected state, the UE is notified to notify the UE of the reselected cell when the cell is reselected by one of the following configuration information or a combination thereof in the RRC reconfiguration signaling; or the following information is included in the message notifying the UE to enter the RRC_INACTIVE state; One of the configuration information or a combination thereof notifies the UE to notify the gNB of the reselected cell when the cell is reselected; or, when the UE is in the RRC_INACTIVE state, notifies one of the following configuration information or a combination thereof to notify the UE that the cell is heavy in the RRC_INACTIVE state. The gNB is notified of the reselected cell to the gNB, where the configuration information is: an application layer identifier, a bearer identifier, a logical channel number, a flow identifier, and an indication information of whether the UE initiates a cell change reporting mechanism.
23. The apparatus according to claim 21 or 22, wherein the notification reporting module is further configured to notify the UE to notify the gNB of the cell to be reselected when the cell is reselected in one of the following cases or a combination thereof:

    The UE is configured to have a corresponding downlink service when entering the RRC_INACTIVE state;

    After the uplink data transmission, the UE has corresponding downlink data to be transmitted;

    The UE is required to perform cell change reporting after entering the RRC_INACTIVE state by using 1 bit indication;

    The UE enters the RRC_INACTIVE state with a 1-bit indication, and needs to perform cell change reporting after uplink data transmission.
24. The device according to any one of claims 19 to 22, wherein the notification reporting module is further configured to notify the UE to stop notifying the gNB of the cell to be reselected when the preset condition is met.
25. A terminal location information reporting device, comprising:

    a memory for storing program instructions;

    a processor, configured to invoke a program instruction stored in the memory, and execute according to the obtained program:

    Determining that the user equipment UE performs cell reselection;

    When it is determined that the UE is an inactive RRC_INACTIVE state UE, the notification information is sent to the next generation base station gNB to notify the gNB that the UE is reselected to the cell.
26. A downlink transmission device, comprising:

    a memory for storing program instructions;

    a processor, configured to invoke a program instruction stored in the memory, and execute according to the obtained program:

    Receiving, by the UE, the notification information sent by the UE to the gNB, where the notification information is used to notify the gNB that the UE is reselected to the cell, and the UE is a UE in an RRC_INACTIVE state;

    The cell determined according to the notification information performs downlink transmission to the UE.
27. A computer storage medium, characterized in that the computer storage medium stores computer executable instructions for causing the computer to perform the method of any one of claims 1 to 12.

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