WO2018098702A1 - Downlink data sending method and apparatus - Google Patents

Downlink data sending method and apparatus Download PDF

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Publication number
WO2018098702A1
WO2018098702A1 PCT/CN2016/108058 CN2016108058W WO2018098702A1 WO 2018098702 A1 WO2018098702 A1 WO 2018098702A1 CN 2016108058 W CN2016108058 W CN 2016108058W WO 2018098702 A1 WO2018098702 A1 WO 2018098702A1
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WIPO (PCT)
Prior art keywords
terminal device
target terminal
downlink data
network device
cell
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PCT/CN2016/108058
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French (fr)
Chinese (zh)
Inventor
刘蕾
赵旸
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华为技术有限公司
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Priority to PCT/CN2016/108058 priority Critical patent/WO2018098702A1/en
Publication of WO2018098702A1 publication Critical patent/WO2018098702A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/20Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel

Abstract

A downlink data sending method and apparatus for solving the problem in the prior art that when a network side predicts that a terminal device will move within a determined small range, the service delay for the network side to send downlink data is high and the service requirements cannot be satisfied. The method is: where a network device stores downlink data to be sent to a target terminal device, after it is determined that a cell range in which the target terminal device can move covers a part of cells in a tracking area of the target terminal device, broadcasting, to the part of cells, a paging message carrying the downlink data. In this way, since the network device can directly broadcast, to the part of cells in which the target terminal device can move, a paging message carrying the downlink data without waiting for a paging response fed back by the target terminal device, the time delay for the network device to send the downlink data is reduced, and the service requirements are satisfied.

Description

Method and device for transmitting downlink data Technical field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for transmitting downlink data.

Background technique

With the continuous development of mobile communication technologies, in order to meet different business needs, mobile communication systems have put forward more and more requirements to meet the corresponding business needs. For example, in a service that sends downlink data on the network side, in order to meet service requirements, service time delay is required.

At present, in the mobile communication system, a specific method for the network to send downlink data to a certain terminal in an idle state is: the network side first sends to the terminal device in the tracking area where the terminal device is located. The paging message, after receiving the paging response fed back by the terminal device, the network side sends downlink data to the terminal device, where the tracking area includes multiple cells that the terminal device can move freely .

In the above method, when the network side predicts that the terminal device moves within a certain small range, the network side still has to wait for receiving the paging response fed back by the terminal device before sending the terminal to the terminal. The device sends downlink data, which causes the network side to send downlink data with a high service delay, and cannot meet the requirement that the network side sends downlink data with low delay.

Summary of the invention

The embodiment of the present invention provides a method and a device for transmitting downlink data, which are used to solve the problem that when the network side predicts that the terminal device moves within a certain small range, the network side sends the downlink data service in the prior art. The delay is high and cannot meet the business needs.

The specific technical solutions provided by the present application are as follows:

In a first aspect, the embodiment of the present application provides a method for transmitting downlink data, where the method is applied to a mobile communication system, and the method includes:

When the network device needs to send downlink data to the target terminal device, first determining the target end a cell range in which the end device can move; then, the network device determines a cell included in the cell range, and when the cell range is a part of a cell in a tracking area of the target terminal device, the network device is The partial cell broadcasts a paging message carrying the downlink data.

According to the above method, the network device can directly broadcast the paging message carrying the downlink data to the partial cell that can be moved by the target terminal device, without receiving the paging response fed back by the target terminal device. After the downlink data is sent, the time that the network device waits to receive the paging response is saved, thereby reducing the delay of the network device to send the downlink data, and meeting the service requirement.

In a possible design, the network device may determine the cell range that the target terminal device can move in the following four manners:

The first mode: the network device acquires a mobility level of the target terminal device, and determines the cell range according to the mobility level, where the mobility level is used to indicate mobile information of the target terminal device. The mobile information may be a predicted moving speed or a moving area in a certain period of time in the future.

The second mode: the network device determines the cell range according to the mobile record of the target terminal device within a set time.

For example, the mobile terminal records in the 10 hours or 5 days of the mobile terminal display that the target terminal device moves within a fixed cell range, and the network device may directly determine the cell range according to the foregoing mobility record.

The third mode: the network device acquires the movable cell range reported by the target terminal device.

A fourth mode: the network device determines the cell range by using registration information of the target terminal device. The network device obtains the registration information by using an attach procedure of the target terminal device, where the registration information includes a cell range that the target terminal device can move.

The network device may determine the range of the cell in a plurality of manners, so that the network device subsequently determines whether the cell range is a part of a cell in the tracking area of the target terminal device, thereby implementing The cell range is within the tracking area of the target terminal device In the case of a partial cell, a paging message carrying the downlink data is broadcast to the partial cell.

In a possible design, the network device may obtain the mobility level of the target terminal device by using the following two methods:

The first method: the network device acquires the saved mobility level of the target terminal device.

The second method: the network device receives the mobility level reported by the target terminal device.

Through the above method, the network device can accurately acquire the mobility level of the target terminal device, so that the network device determines the cell range according to the mobility level.

In one possible design, the mobility level of the target terminal device is predicted by the target terminal device for movement information within a set duration (eg, 5 days). For example, when the mobile information is the number of cells (ie, the mobile area) that the target terminal device can move within the set duration, the mobility level may be specifically classified into the following four types:

a, no mobility: the target terminal device moves within a fixed cell in the current tracking area of the target terminal device;

b. low mobility: the target terminal device moves within a fixed number of cells in the tracking area, wherein the fixed number is the number of mobile cells in the target terminal device within a set duration Experience value. For example, when the fixed number is 3, the terminal device moves in a fixed 3 cells;

c. Medium mobility: the target terminal device moves in all cells in the tracking area;

d. High mobility: The target terminal device can move in multiple tracking areas.

Through the foregoing method, the network device may determine, according to the foregoing four mobility levels, the cell range that the target terminal device can move, where the network device determines according to the mobility level in the foregoing a or b. The cell range is a partial cell in the tracking area of the target terminal device, so that the network device broadcasts a paging message carrying the downlink data to the partial cell.

In a possible design, the paging message may further include the identifier information of the target terminal device, so that after the network device broadcasts the paging message to the partial cell, The target terminal device determines, according to the identifier information, that the paging message is sent by itself, so that the target terminal device acquires the downlink data in time after receiving the paging message, so that the network is enabled. The device successfully completes the transmission of the downlink data.

In a possible design, when the network device determines that the number of cells in the partial cell is greater than 1 and less than a set number, and the size of the downlink data is less than a set threshold, the network device is The partial cell broadcasts the paging message carrying the downlink data. The number of the settings is determined by the network device according to the number of cells in the past and the waste of resources.

According to the comprehensive consideration of the number of cells in the partial cell and the size of the downlink data in the foregoing method, the number of cells in the partial cell is greater than 1 and less than a set number, and the downlink data is When the size is smaller than the set threshold, the network device is prevented from wasting transmission resources when broadcasting the paging message carrying the downlink data to the partial cell.

In a possible design, the network device may be an access device or a core network device, where the core network device may be a Mobility Management Entity (MME).

When the MME has the downlink data to be sent to the target terminal device, when the MME broadcasts the paging message carrying the downlink data to the partial cell, the MME first sends the bearer to the access device. a paging message of the downlink data, and then the access device broadcasts, by the access device, a paging message carrying the downlink data to the partial cell.

According to the foregoing method, the access device may directly broadcast a paging message carrying the downlink data to the partial cell that is movable by the terminal device, without receiving a paging response that is fed back by the target terminal device. After the downlink data is sent, the time that the network device waits to receive the paging response is saved, thereby reducing the delay of the network device to send the downlink data, and meeting the service requirement.

In a second aspect, the embodiment of the present application further provides a network device, where the network device has a function of implementing network device behavior in the foregoing method instance. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a possible design, the structure of the network device includes a processing unit and a sending unit, and the units may perform corresponding functions in the foregoing method examples. For details, refer to the detailed description in the method example, which is not described herein.

In a possible design, the network device includes a transceiver, a processor, a bus, and a memory for communicating with other devices in the mobile communication system, the processor being configured to The network device is supported to perform the corresponding function in the above method. The memory is coupled to the processor, which stores program instructions and data necessary for the network device.

In a third aspect, the embodiment of the present application further provides a mobile communication system, where the mobile communication system includes an access device, an MME, and a terminal device.

The downlink data transmission method provided by the embodiment of the present application, when the network device stores the downlink data to be sent to the target terminal device, determining that the target cell device is movable in the tracking area of the target terminal device After the partial cell, the paging message carrying the downlink data is broadcast to the partial cell. In this way, since the network device can directly broadcast the paging message carrying the downlink data to the partial cell that can be moved by the target terminal device, without receiving the paging response fed back by the target terminal device, The sending of the downlink data saves the time that the network device waits to receive the paging response, thereby reducing the delay of the network device sending the downlink data, and meeting the service requirement.

DRAWINGS

FIG. 1 is a schematic structural diagram of a mobile communication system according to an embodiment of the present application;

FIG. 2 is a flowchart of a method for sending downlink data according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a network device according to an embodiment of the present disclosure;

FIG. 4 is a structural diagram of a network device according to an embodiment of the present application.

detailed description

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

The embodiment of the present invention provides a method and a device for transmitting downlink data, which are used to solve the service delay of the downlink data sent by the network side when the network side predicts that the terminal device moves within a certain small range in the prior art. Higher, can not meet the needs of business needs. The method and the device are based on the same inventive concept. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and the repeated description is not repeated.

In the technical solution of the embodiment of the present application, when the network device stores the downlink data to be sent to the target terminal device, after determining that the target cell is movable, the cell range is a part of the cell in the tracking area of the target terminal device, Broadcasting a paging message carrying the downlink data to the partial cell. In this way, since the network device can directly broadcast the paging message carrying the downlink data to the partial cell that can be moved by the target terminal device, without receiving the paging response fed back by the target terminal device, The sending of the downlink data saves the time that the network device waits to receive the paging response, thereby reducing the delay of the network device sending the downlink data, and meeting the service requirement.

Hereinafter, some of the terms in the present application will be explained to be understood by those skilled in the art.

1) The tracking area involved in the embodiment of the present application is a long term evolution (LTE) system established for the location management of a terminal device, and is defined as a free mobile area in which the terminal device does not need to update the service. The terminal device registers a tracking area with the MME, and the MME configures a tracking area for the terminal device, where the tracking area includes multiple cells.

2) The network device in the embodiment of the present application is a device that sends downlink data to the terminal device, and may be, but is not limited to, an access device or an MME. The access device may be a device that provides a radio access service for the terminal device, such as a base station (BS), including but not limited to: an evolved Node B (eNB), a radio network controller. (radio network controller, RNC), Node B (Node B, NB), Base Station Controller (BSC), Base Transceiver Station (BTS), home base station (for example, Home evolved NodeB, or Home Node B, HNB), Baseband Unit (BBU), Access Point (AP), and radio access Wireless Fidelity Access Point (WiFi AP), Worldwide Interoperability for Microwave Access (WiMAX) BS, etc.

3) The terminal device, which is also referred to as a user equipment (User Equipment, UE), is a device that provides data connectivity to a user, for example, a handheld device with an wireless connection function, and an in-vehicle device. , a wearable device, a computing device, a mobile station (MS), etc., and a mobile terminal that communicates with one or more core networks via an access network.

In order to more clearly describe the technical solutions of the embodiments of the present application, the method and apparatus for transmitting downlink data provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of a possible mobile communication system to which the method for transmitting downlink data provided by the embodiment of the present application is applicable, where the architecture of the mobile communication system includes: an access device, an MME, and a terminal device, where

The current tracking area of the terminal device is cell A, cell B, and cell C;

When the access device has downlink data to be sent to the terminal device (for example, the MME sends the downlink data to the access device), the access device performs the following steps: determining the a range of cells that the terminal device can move; when the cell range is a partial cell in the tracking area of the terminal device (for example, the cell A and the cell B shown in FIG. 1 ), the part of the cell broadcasts and carries the Paging message of downlink data;

When the MME has downlink data to be sent to the terminal device, the MME performs the following steps: determining a cell range that the terminal device can move; when the cell range is in a tracking area of the terminal device When a partial cell (for example, cell A and cell B shown in FIG. 1), the MME first sends a paging message carrying the downlink data to the access device, and then the access device goes to the part. The cell broadcasts a paging message carrying the downlink data;

Receiving, by the terminal device, the downlink data that is broadcasted by the access device to the partial cell when the terminal device moves in a mobile part of the cell (for example, the cell A and the cell B shown in FIG. 1 ) And calling the message to obtain the downlink data in the paging message.

In the embodiment of the present application, when the access device or the MME stores the downlink data to be sent to the terminal device, after determining that the cell range that the terminal device can move is a part of the cell in the tracking area of the terminal device, The access device broadcasts a paging message carrying the downlink data to the partial cell. In this way, the access device can directly broadcast the paging message carrying the downlink data to the partial cell that can be moved by the terminal device, without receiving the paging response fed back by the target terminal device. The sending of the downlink data saves the time that the network device waits to receive the paging response, thereby reducing the delay of the network device sending the downlink data, and meeting the service requirement.

The embodiment of the present application provides a method for transmitting downlink data, which is applicable to the mobile communication system shown in FIG. 1 . Referring to FIG. 2 , the specific process of the method includes:

Step 201: The network device determines a range of cells that the target terminal device can move when it needs to send downlink data to the target terminal device.

The network device may be, but is not limited to, the access device or the MME in FIG.

Optionally, the network device may determine, by using the following four manners, the cell range that the target terminal device can move:

The first mode: the network device acquires a mobility level of the target terminal device, and determines the cell range according to the mobility level, where the mobility level is used to indicate mobile information of the target terminal device. The mobile information may be a predicted moving speed or a moving area in a certain period of time in the future.

The second mode: the network device determines the cell range according to the mobile record of the target terminal device within a set time.

For example, the mobile terminal records in the 10 hours or 5 days of the mobile terminal display that the target terminal device moves within a fixed cell range, and the network device may directly determine the cell range according to the foregoing mobility record.

The third mode: the network device acquires the movable cell range reported by the target terminal device.

A fourth mode: the network device determines the cell range by using registration information of the target terminal device. The network device obtains the registration information by using an attach procedure of the target terminal device, where the registration information includes a cell range that the target terminal device can move.

Optionally, in the foregoing first mode, the network device acquires a mobility level of the target terminal device, and the specific method may be:

Obtaining, by the network device, the mobility level of the saved target terminal device; or

The network device receives the mobility level reported by the target terminal device.

For example, when the network device is an MME, the mobility level of the target terminal device saved by the MME may be saved after the MME obtains the mobility level.

For another example, when the network device is an access device, the mobility level saved by the access device may be saved after the access device determines the mobility level; or the MME obtains or And determining the mobility level, and sending the mobility level to the access device, where the mobility level sent by the MME to the access device may be carried in a paging message.

The mobility level of the target terminal device is predicted by the target terminal device for mobile information within a set duration (for example, 5 days). For example, when the mobile information is the number of cells (ie, the mobile area) that the target terminal device can move within the set duration, the mobility level may be specifically classified into the following four types:

a, no mobility: the target terminal device moves within a fixed cell in the current tracking area of the target terminal device;

b. low mobility: the target terminal device moves within a fixed number of cells in the tracking area, wherein the fixed number is the number of mobile cells in the target terminal device within a set duration Experience value. For example, when the fixed number is 3, the terminal device moves in a fixed 3 cells;

c. Medium mobility: the target terminal device moves in all cells in the tracking area;

d. High mobility: The target terminal device can move in multiple tracking areas.

The network device may determine, according to the foregoing four mobility levels, the cell range that the target terminal device can move, where, in the embodiment of the present application, the network device is according to the foregoing The cell range determined by the mobility level in the b is a part of the cell in the tracking area of the target terminal device, and the network device performs step 202.

Step 202: When the cell range is a partial cell in the tracking area of the target terminal device, the network device broadcasts a paging message carrying the downlink data to the partial cell.

By performing step 202, the network device may directly broadcast the paging message carrying the downlink data to the partial cell, without sending the downlink data after receiving the paging response fed back by the target terminal device, The time taken by the network device to wait for receiving the paging response is saved, thereby reducing the delay of the network device sending the downlink data, and meeting the service requirement.

Optionally, the paging message may further include the identifier information of the target terminal device, so that after the network device broadcasts the paging message to the partial cell, the target terminal device may be configured according to the target terminal device. Determining, by the identifier information, that the paging message is sent by itself, so that the target terminal device acquires the downlink data in time after receiving the paging message, so that the network device successfully completes the downlink data. transmission.

Optionally, the network device may perform step 202 by using the following method:

When the network device determines that the number of cells in the partial cell is greater than 1 and less than a set number, and the size of the downlink data is less than a set threshold, the network device broadcasts the The paging message of downlink data. The number of the settings is determined by the network device according to the number of cells in the past and the waste of resources. Optionally, when the mobility level of the target terminal device is the low mobility, the set number is the same as the fixed number.

In the above method, the number of cells in the partial cell is multiple. After the network terminal device broadcasts the paging message carrying the downlink data in the partial cell, the target terminal device is currently only One cell in the partial cell, and other cells are discarded even if the paging message is received. In this way, the network device sends the paging message to other cells, which causes waste of transmission resources. Therefore, when the number of cells in the partial cell is the set number (usually a small value, such as 2, 3), the number of paging messages sent by the network device to other cells is also limited. Therefore, on the basis of ensuring that the delay of sending the downlink data by the network device is reduced, the transmission resource consumed for transmitting the paging message may be appropriately reduced to avoid waste of transmission resources.

In addition, when the downlink data is larger than a certain value, the other cells will discard the received paging message, resulting in more wasteful transmission resources. Therefore, the size of the downlink data and the transmission resource are wasted. The situation is analyzed, and the size of the downlink data is limited to a set threshold, which can reduce waste of transmission resources.

Therefore, by considering the number of cells in the partial cell and the size of the downlink data in the foregoing method, the number of cells in the partial cell is greater than 1 and less than a set number, and the downlink is When the size of the data is less than the set threshold, the network device causes a waste of transmission resources caused by performing step 202.

When the network device determines that the number of cells in the partial cell is 1, the network device directly broadcasts the paging message carrying the downlink data to the partial cell without considering the size of the downlink data. . In this method, the network device only needs to send the paging message to the one cell, and the target terminal device can be determined to be received without broadcasting the paging message carrying the downlink data to multiple cells. To the downlink data, since the transmission resource is not wasted in the method, the network device does not need to consider the size of the downlink data.

The downlink data transmission method provided by the embodiment of the present application, when the network device stores the downlink data to be sent to the target terminal device, determining that the target cell device is movable in the tracking area of the target terminal device After the partial cell, the paging message carrying the downlink data is broadcast to the partial cell. In this way, since the network device can directly broadcast the paging message carrying the downlink data to the partial cell that can be moved by the target terminal device, without receiving the paging response fed back by the target terminal device, The sending of the downlink data saves the time that the network device waits to receive the paging response, thereby reducing the delay of the network device sending the downlink data, and meeting the service requirement.

Based on the above embodiment, the embodiment of the present application further provides a network device, which is applied to the mobile communication system shown in FIG. 1 and is used to implement the method for downlink data transmission as shown in FIG. 2 . Referring to FIG. 3, the network device 300 includes: a processing unit 301 and a sending unit 302, where

The processing unit 301 is configured to determine, when the downlink data needs to be sent to the target terminal device, Describe the range of cells that the target terminal device can move;

The sending unit 302 is configured to: when the cell range is a partial cell in the tracking area of the target terminal device, broadcast a paging message carrying the downlink data to the partial cell.

Optionally, the processing unit 301 is specifically configured to: when determining the range of the cell that the target terminal device can move:

Obtaining a mobility level of the target terminal device, and determining, according to the mobility level, the cell range, where the mobility level is used to indicate mobility information of the target terminal device; or

Determining the cell range according to the movement record of the target terminal device within a set time; or

Obtaining the movable cell range reported by the target terminal device; or

The cell range is determined by the registration information of the target terminal device.

Optionally, the sending unit 302 is configured to: when the paging message carrying the downlink data is broadcast to the partial cell, specifically:

When the network device determines that the number of cells in the partial cell is greater than 1 and less than a set number, and the size of the downlink data is less than a set threshold, broadcasting, by using the downlink data, the part of the cell Said paging message.

Optionally, the paging message includes the identifier information of the target terminal device.

Optionally, the network device 300 is an access device or a core network device.

When the network device provided by the embodiment of the present application stores the downlink data to be sent to the target terminal device, after determining that the mobile terminal range of the target terminal device is a part of the cell in the tracking area of the target terminal device, The partial cell broadcasts a paging message carrying the downlink data. In this way, since the network device can directly broadcast the paging message carrying the downlink data to the partial cell that can be moved by the target terminal device, without receiving the paging response fed back by the target terminal device, The sending of the downlink data saves the time that the network device waits to receive the paging response, thereby reducing the delay of the network device sending the downlink data, and meeting the service requirement.

It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only one type. The logical function is divided, and there may be another way of dividing the actual implementation. The functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application, in essence or the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

Based on the above embodiment, the embodiment of the present application further provides a network device, which is applied to the mobile communication system shown in FIG. 1. Referring to FIG. 4, the network device 400 includes: a transceiver 401, and a processor. 402, a bus 403, and a memory 404, wherein

The transceiver 401, the processor 402, and the memory 404 are connected to each other by the bus 403; the bus 403 may be a peripheral component interconnect (PCI) bus or an extended industry standard structure ( Extended industry standard architecture, EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 4, but it does not mean that there is only one bus or one type of bus.

The transceiver 401 is configured to perform communication interaction with other devices connected to the network device 400 in the mobile communication system.

The processor 402 is configured to implement the method for sending downlink data as shown in FIG. 2, including:

Determining a range of cells that the target terminal device can move when it is required to send downlink data to the target terminal device;

When the cell range is a partial cell in the tracking area of the target terminal device, the paging message carrying the downlink data is broadcast to the partial cell.

Optionally, the processor 402 is specifically configured to: when determining the range of the cell that the target terminal device can move:

Obtaining a mobility level of the target terminal device, and determining, according to the mobility level, the cell range, where the mobility level is used to indicate mobility information of the target terminal device; or

Determining the cell range according to the movement record of the target terminal device within a set time; or

Obtaining the movable cell range reported by the target terminal device; or

The cell range is determined by the registration information of the target terminal device.

Optionally, the processor 402 is configured to: when the paging message carrying the downlink data is broadcast to the part of the cell, specifically:

When the network device determines that the number of cells in the partial cell is greater than 1 and less than a set number, and the size of the downlink data is less than a set threshold, broadcasting, by using the downlink data, the part of the cell Said paging message.

Optionally, the paging message includes the identifier information of the target terminal device.

Optionally, the network device 400 is an access device or a core network device.

The memory 404 is configured to store a program or the like. In particular, the program can include program code, the program code including computer operating instructions. The memory 404 may include RAM, and may also include non-volatile memory, such as at least one disk storage. The processor 402 executes an application stored in the memory 404 to implement the above functions, thereby implementing a method for downlink data transmission as shown in FIG. 2.

When the network device provided by the embodiment of the present application stores the downlink data to be sent to the target terminal device, after determining that the mobile terminal range of the target terminal device is a part of the cell in the tracking area of the target terminal device, The partial cell broadcasts a paging message carrying the downlink data. In this way, since the network device can directly broadcast the paging message carrying the downlink data to the partial cell that can be moved by the target terminal device, without receiving the target terminal After the paging response of the feedback is sent, the downlink data is sent, which saves the time that the network device waits to receive the paging response, thereby reducing the delay of the network device to send the downlink data, and satisfies Business needs.

In the above, the method and device for transmitting downlink data provided in the embodiment of the present application, when the network device stores the downlink data to be sent to the target terminal device, determining that the target cell range that the target terminal device can move is the target After a part of the cell in the tracking area of the terminal device, the paging message carrying the downlink data is broadcast to the part of the cell. In this way, since the network device can directly broadcast the paging message carrying the downlink data to the partial cell that can be moved by the target terminal device, without receiving the paging response fed back by the target terminal device, The sending of the downlink data saves the time that the network device waits to receive the paging response, thereby reducing the delay of the network device sending the downlink data, and meeting the service requirement.

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Thus, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware. Moreover, the application 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 application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the present application. 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 device is implemented in a flow chart or Multiple processes and/or block diagrams The functions specified in one or more boxes.

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 present application has been described, those skilled in the art can make further changes and modifications to these embodiments once they are aware of the basic inventive concept. 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 changes and modifications to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, it is intended that the present invention cover the modifications and variations of the embodiments of the present invention.

Claims (10)

  1. A method for transmitting downlink data, comprising:
    When the network device needs to send downlink data to the target terminal device, determine, by the network device, a range of cells that the target terminal device can move;
    When the cell range is a partial cell in the tracking area of the target terminal device, the network device broadcasts a paging message carrying the downlink data to the partial cell.
  2. The method of claim 1, wherein the determining, by the network device, the range of cells that the target terminal device can move comprises:
    Obtaining, by the network device, a mobility level of the target terminal device, and determining, according to the mobility level, the cell range, where the mobility level is used to indicate mobile information of the target terminal device; or
    Determining, by the network device, the cell range according to a movement record of the target terminal device within a set time; or
    Obtaining, by the network device, the movable cell range reported by the target terminal device; or
    The network device determines the cell range by using registration information of the target terminal device.
  3. The method according to claim 1 or 2, wherein the broadcasting, by the network device, the paging message carrying the downlink data to the partial cell, includes:
    When the network device determines that the number of cells in the partial cell is greater than 1 and less than a set number, and the size of the downlink data is less than a set threshold, the network device broadcasts the The paging message of downlink data.
  4. The method according to any one of claims 1-3, wherein the paging message includes identification information of the target terminal device.
  5. The method according to any one of claims 1 to 4, wherein the network device is an access device or a core network device.
  6. A network device, comprising:
    a processing unit, configured to determine, when the downlink data needs to be sent to the target terminal device, a range of cells that the target terminal device can move;
    And a sending unit, configured to: when the cell range is a partial cell in the tracking area of the target terminal device, broadcast a paging message that carries the downlink data to the partial cell.
  7. The network device according to claim 6, wherein the processing unit is specifically configured to: when determining the range of the cell that the target terminal device can move:
    Obtaining a mobility level of the target terminal device, and determining, according to the mobility level, the cell range, where the mobility level is used to indicate mobility information of the target terminal device; or
    Determining the cell range according to the movement record of the target terminal device within a set time; or
    Obtaining the movable cell range reported by the target terminal device; or
    The cell range is determined by the registration information of the target terminal device.
  8. The network device according to claim 6 or 7, wherein the transmitting unit, when broadcasting the paging message carrying the downlink data to the partial cell, is specifically used for:
    When the network device determines that the number of cells in the partial cell is greater than 1 and less than a set number, and the size of the downlink data is less than a set threshold, broadcasting, by using the downlink data, the part of the cell Said paging message.
  9. The network device according to any one of claims 6 to 8, wherein the paging message includes identification information of the target terminal device.
  10. The network device according to any one of claims 6-9, wherein the network device is an access device or a core network device.
PCT/CN2016/108058 2016-11-30 2016-11-30 Downlink data sending method and apparatus WO2018098702A1 (en)

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