CN106961727B

CN106961727B - Paging and control method and device thereof

Info

Publication number: CN106961727B
Application number: CN201610015649.XA
Authority: CN
Inventors: 全海洋; 陈瑞卡; 梁靖
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2016-01-11
Filing date: 2016-01-11
Publication date: 2020-02-21
Anticipated expiration: 2036-01-11
Also published as: CN106961727A; WO2017121236A1

Abstract

The application discloses a paging and control method and device thereof, which are used for realizing that a core network controls a base station to execute retransmission of paging messages, reducing storage load of the core network, reducing signaling load of an S1 interface between an MME and an eNB, avoiding that the core network completely carries the content of the paging messages every time, avoiding repeated retransmission of information, avoiding continuous and repeated sending of the paging messages by the base station, saving resources and improving efficiency. The paging control method provided by the application comprises the following steps: determining that paging needs to be carried out on User Equipment (UE) and a base station is needed to control paging retransmission; and sending a paging message to the base station, wherein the paging message carries indication information of paging retransmission times.

Description

Paging and control method and device thereof

Technical Field

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

Background

In existing mobile communication systems, the repeated transmission of pages is controlled by the core network. However, in the system research of the narrowband Band Internet of Things (NB IoT), when the paging message needs to be repeatedly transmitted in the case of long discontinuous reception (longDRX), the storage time of the paging related information in the core network is long, and the storage load of the core network is increased. And if each retransmission, the paging message is repeatedly sent from the core network to the base station, which undoubtedly also increases the transmission load on the network interface. For NB-IoT systems, NB-IoT terminals are mostly low-cost terminals, and the probability of successful reception at one time is lower than that of ordinary terminals, and for coverage-enhanced terminals, if the paging message is not sent within the maximum CE range, the terminal may also fail to receive the paging message.

The following is introduced about Machine Type Communication (MTC):

MTC is a new communication concept, and its purpose is to organically combine multiple different types of communication technologies, for example: machine-to-machine communication, machine control communication, man-machine interactive communication, mobile internet communication, thereby promoting the development of social production and life style. It is expected that the business of people-to-people communication may only account for 1/3 in the entire end market, while a larger amount of communication is inter-machine (small bandwidth system) communication traffic.

Current mobile communication networks are designed for person-to-person communication, such as: network capacity determination, etc. If it is desired to support small bandwidth system communication using a mobile communication network, the mechanism of the mobile communication system needs to be optimized according to the characteristics of the small bandwidth system communication, so as to better realize the small bandwidth system communication without or with less influence on the traditional person-to-person communication.

The coverage enhancement is described as follows:

in the existing network, an operator finds that a terminal working in some scenes, such as a terminal working in a basement, a mall or a corner of a building, cannot communicate with the network because a wireless signal is severely shielded and is greatly attenuated, and the network construction cost is greatly increased by performing deep coverage on the network in the scenes. Tests have shown that a certain degree of enhancement of existing coverage is required. A feasible method for realizing coverage enhancement is to adopt repeated transmission or similar technology to the existing channel, and theoretically, a certain degree of coverage gain can be obtained by performing repeated transmission on the existing physical channel for tens of times to hundreds of times.

The introduction of the paging mechanism is as follows:

from the wireless network side, in a Long Term Evolution (LTE) system, a User Equipment (UE) has two states, namely, a connected (RRC _ connected) state and an idle (RRC-idle) state. The UE can transmit uplink data only when entering the RRC _ connected state. Once the UE completes sending data, the network monitors that the terminal has no data transmission for a long time, and then uses Radio Resource Control (RRC) connection of the terminal through an RRC connection release message, so that the UE enters an RRC _ idle state.

The main work of the UE in RRC idle state is to monitor paging on the network side. Paging is monitored in a Discontinuous Reception (DRX) manner for power saving. I.e. each cycle is in the receive state for only a short period of time, and the other periods of time in the cycle are in the non-receive state. For the LTE system, the maximum DRX cycle configured on the network side is 2560 ms. And for LTE and NB IOT systems supporting eDRX, the period of DRX can be configured to be several tens of minutes at the longest. In case the DRX cycle is configured, the receiver is only turned on to receive the network-side paging indication message and possibly the paging message, and the receiver is turned off at other times. In this way, the purpose of saving electricity can be achieved. Only one subframe (1ms) in each paging cycle is in a receiving state, and all other times in the cycle are in a non-receiving state, as shown in fig. 1.

Referring to fig. 2, for the paging procedure, paging is initiated by a core network entity, and a paging message is first transmitted to an evolved node b (eNB). The paging message carries the UE specific DRX configuration. For LTE systems, the eNB will compare the DRX cycle with the DRX cycle configured in the system message, and transmit the paging message using the shorter DRX cycle. According to the specification of 36.413, it can be seen that the paging (paging) message sent from the Mobility Management Entity (MME) on the core network side to the eNB carries the contents shown in the following table one and table two:

watch 1

Range bound	Explanation
		maxnoofTAIs	Maximum no.of TAIs.Value is 256.
maxnoofCSGIds	Maximum no.of CSG Ids within the CSG Id List.Value is 256.

Watch two

It can be seen that the paging DRX in the paging message determines the paging cycle, and a Tracking Area Identity (TAI) list (list) gives the range of paging message transmission. The retransmission of the paging message is controlled by the core network.

In summary, with the increase of the eDRX length, the eDRX length can be extended to several tens of minutes currently, while in the existing system, the retransmission control of the paging message is controlled by the Core Network (CN), and for the UEs of the NB IOT system, most of the UEs are non-moving UEs or UEs moving in a small range, if the UE still puts the paging retransmission to the core network, the paging related information stored in the core network may be too much, and the storage space may be too much occupied. And if the PAGING message is retransmitted by the core network, all information in the entire PAGING message is retransmitted, which undoubtedly also increases the transmission load on the interface. In addition, if the base station is allowed to automatically retransmit the paging message, that is, the base station itself determines whether to retransmit the paging message and the number of times of retransmitting the paging message, the core network cannot know whether the base station is retransmitting the paging message or has terminated retransmitting the paging message, and if the core network receives the paging response message of the UE, the base station is also retransmitting the paging message to the UE, which may cause resource waste.

Disclosure of Invention

The embodiment of the application provides a paging and control method and device thereof, which are used for realizing that a core network controls a base station to execute retransmission of a paging message, reducing the storage load of the core network, reducing the signaling load of an S1 interface between an MME and an eNB, avoiding the core network from completely carrying the content of the paging message every time, avoiding repeated retransmission of information, avoiding the base station from continuously and repeatedly sending the paging message, saving resources and improving efficiency.

On a core network side, a paging control method provided in an embodiment of the present application includes:

determining that paging needs to be carried out on User Equipment (UE) and a base station is needed to control paging retransmission;

and sending a paging message to the base station, wherein the paging message carries indication information of paging retransmission times.

By the method, the user equipment UE is determined to need to be paged, the base station is required to control paging retransmission, and the paging message is sent to the base station, wherein the paging retransmission is carried with the indication information of the number of times of paging retransmission, so that the core network controls the base station to execute the retransmission of the paging message, the storage load of the core network is reduced, the signaling load of an S1 interface between the MME and the eNB is reduced, the core network is not required to completely carry the content of the paging message every time, the repeated retransmission of the information is avoided, the base station can be prevented from continuously and repeatedly sending the paging message, the resources are saved, and the paging efficiency is improved.

Preferably, it is determined that paging of the UE is required by receiving a paging message from the UE.

Preferably, the base station is determined to be required to control the paging retransmission when one or a combination of the following conditions are met:

the UE is a fixed terminal or a low-mobility terminal;

the UE is a Machine Type Communication (MTC) terminal or an NB (NB) IoT terminal;

and tracking areas indicated by a tracking area identification list carried in the paging message of the UE all belong to the coverage range of the same base station.

Preferably, the method further comprises:

starting a preset timer when sending a paging message to the base station;

and before the timer is overtime, if a paging response message from the UE is received, issuing a paging termination message for indicating the base station to stop paging the UE to the base station. Therefore, the resource waste caused by the continuous repeated sending of the responded paging message by the base station can be avoided.

Preferably, the paging termination message carries identities of a plurality of UEs, so as to instruct the base station to stop paging the plurality of UEs.

Accordingly, on the access network side, for example, on the base station side, a paging method provided in an embodiment of the present application includes:

receiving a paging message which is sent by a core network and needs to page User Equipment (UE);

and if the paging message carries indication information of paging retransmission times, repeatedly sending the paging message to the UE according to the indication information.

Preferably, the method further comprises:

and when receiving a paging termination message which is sent by a core network and used for indicating to stop paging the UE, stopping sending the paging message to the UE.

Preferably, when the paging termination message carries the identities of the plurality of UEs, the sending of the paging message to the plurality of UEs is stopped simultaneously.

Corresponding to the method on the core network side, an embodiment of the present application provides a paging control apparatus, including:

a determining unit, configured to determine that paging of a user equipment UE is required, and a base station is required to control paging retransmission;

and the sending unit is used for sending a paging message to the base station, wherein the paging message carries indication information of paging retransmission times.

Preferably, the determining unit determines that the UE needs to be paged by receiving a paging message from the UE.

Preferably, the determining unit determines that the base station is required to control paging retransmission when one or a combination of the following conditions are satisfied:

the UE is a fixed terminal or a low-mobility terminal;

Preferably, the sending unit is further configured to: starting a preset timer when sending a paging message to the base station; and before the timer is overtime, if a paging response message from the UE is received, issuing a paging termination message for indicating the base station to stop paging the UE to the base station.

Corresponding to the method of the access network side, an embodiment of the present application provides a paging device, including:

a receiving unit, configured to receive a paging message sent by a core network and requiring paging of a user equipment UE;

and the paging unit is used for repeatedly sending the paging message to the UE according to the indication information if the paging message carries the indication information of the paging retransmission times.

Preferably, the paging unit is further configured to: and when receiving a paging termination message which is sent by a core network and used for indicating to stop paging the UE, stopping sending the paging message to the UE.

Preferably, when the paging termination message carries the identities of a plurality of UEs, the paging unit stops sending the paging message to the plurality of UEs at the same time.

Drawings

Fig. 1 is a schematic diagram of a paging mechanism in the prior art, in which only one subframe (1ms) is in a receiving state in each paging cycle, and all other times in the paging cycle are in a non-receiving state;

fig. 2 is a schematic diagram illustrating paging message transmission of an S1 interface between an MME and an eNB in an LTE system in the prior art;

fig. 3 is a flowchart illustrating a paging control method at a core network side according to an embodiment of the present application;

fig. 4 is a flowchart illustrating a paging method at a base station side according to an embodiment of the present application;

fig. 5 is a flowchart illustrating a paging method of an entire network according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a paging control apparatus according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a paging device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of another paging control apparatus according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of another paging device according to an embodiment of the present application.

Detailed Description

Referring to fig. 3, on a core network side, a paging control method provided in an embodiment of the present application includes:

s101, determining that paging needs to be carried out on User Equipment (UE) and a base station is needed to control paging retransmission;

s102, sending a paging message to the base station, wherein the paging message carries indication information of paging retransmission times.

Preferably, it is determined that paging of the UE is required by receiving a paging message from the UE. That is, when receiving the PAGING message of the UE, the core network determines whether to let the eNB control the PAGING retransmission, and if necessary, carries the retransmission number information when issuing the PAGING message to the base station, and starts a timer at the same time. The timing duration of the timer is greater than or equal to the time required by the base station to finish retransmitting the paging message for all times, namely the timer is ensured to be overtime after the base station finishes sending all repeated paging messages.

After receiving PAGING message, if the PAGING message carries retransmission times, the base station starts a PAGING counter, and controls the sending times of the PAGING message according to the requirement of retransmission times.

If the core network receives the paging response of the UE when the timer is overtime, the core network indicates that the paging response message of the UE is received when the retransmission times of the base station do not reach the maximum times, and the core network can send a paging termination message to the base station to enable the base station to terminate the related paging.

Furthermore, the paging termination message sent by the core network to the base station may carry the identifiers of the multiple UEs, so as to once instruct the base station to stop paging the multiple UEs, thereby avoiding resource waste caused by the base station continuously and repeatedly sending the responded paging message.

based on the attribute of the UE, the UE is a fixed terminal or a low-mobility terminal; or the UE is a Machine Type Communication (MTC) terminal or an NB (NB) IoT terminal with low mobility;

determining that Tracking areas (Tracking areas, TAs) in the TAI list all belong to the coverage Area of the same base station according to the range list of the Tracking Area Identity (TAI) list (list) carried in the paging message of the UE.

Accordingly, on the access network side, for example, on the base station side, referring to fig. 4, an embodiment of the present application provides a paging method, including:

s201, receiving a paging message which is sent by a core network and needs to page User Equipment (UE);

s202, if the paging message carries indication information of paging retransmission times, repeatedly sending the paging message to the UE according to the indication information.

When the base station receives the paging termination message sent by the core network, the relevant sending of the relevant paging message is terminated, and the relevant content of the corresponding paging message is eliminated.

Example 1:

when a PAGING message is to be sent, the MME learns from other servers or application servers of the core network that the paged terminal is a low-mobility terminal, or the MME determines that the UE is under the coverage of one eNB according to the range of the TAI list, and when the PAGING message is sent to the eNB, the PAGING (PAGING) message carries the number of PAGING repetitions (assumed to be n). After receiving the PAGING message, the base station determines the PAGING monitoring time of the paged UE according to the content in the PAGING message, and transmits the PAGING. The base station will send paging messages at the paging locations where the UE monitors during n consecutive DRX cycles.

The contents carried by the paging message on the S1 interface provided in the embodiment of the present application are shown in table three below:

parameter name	Whether or not it must occur
		Message Type	M
UE Identity Index value (UE Identity Index value)	M
		UE Paging Identity	M
Paging DRX (Paging DRX configuration)	O
		CN Domain (CN Domain)	M
List of TAIs (tracking area List)
		>TAI List Item
>>TAI	M
		CSG Id List (closed subscriber group identification List)
>CSG Id
		Paging Priority	O
UE Radio Capability for Paging (Paging related Capability information)	O
		Paging repetition number	O

Watch III

It can be seen that in the last row of table three, the Paging repetition number (Paging repetition number) is carried in the Paging message to indicate the number of times the base station repeatedly transmits the Paging message.

Example 2:

after the core network sends the paging message to the eNB and carries the repetition times, a timer T may be started, the size of T is set to be greater than the length of n × DRX cycle, and when the timer is over time and the CN does not receive a paging response, the CN may choose to discard or try to page again within a larger range. If the timer is not over time, the CN receives the paging response message, and the CN can generate a new paging termination message to the eNB to inform the eNB of terminating paging.

The contents carried by the paging termination message are shown in table four below:

parameter name	Whether or not it must occur
		Message Type	M
UE Identity Index value (UE Identity Index value)	M

Watch four

As can be seen, the paging termination message may carry a message type and a UE identity index value to instruct the base station to terminate paging for the UE.

After receiving the paging termination message, the base station terminates the repeated paging of the related UE and deletes the paging information of the related UE.

Further, in order to save signaling, the paging termination message sent by the core network to the base station may provide identification index values of a plurality of UEs, and may terminate paging of the plurality of UEs together.

Example 3:

when the base station receives PAGING message from the core network, which carries indication information of PAGING retransmission times, the base station needs to send a PAGING message before receiving no PAGING termination message or before the PAGING retransmission times reaches the upper limit. For a terminal with enhanced coverage, the base station may determine the manner of sending the paging message according to the level of coverage enhancement. If the paging response is not received in time, the base station may choose to attempt the following at the time of retransmission:

the base station adjusts the level of coverage enhancement, and gradually increases the level, namely, the base station tries to send paging messages in a larger coverage enhancement range;

or, the base station may transmit the paging message according to the coverage enhancement level of the terminal when transmitting the paging message for the first time, and transmit the paging message within the maximum coverage enhancement range when repeatedly transmitting the paging message.

Example 4:

referring to fig. 5, the procedure of performing paging in the whole network mainly includes:

a serving gateway (S-GW) sending a paging request to an MME;

after receiving a paging request sent by S-GW, MME determines that a base station is required to execute paging retransmission aiming at UE, sends paging information to eNB, wherein the paging information carries the retransmission times of the paging information, and starts a timer;

after receiving the paging message, the eNB finds that the paging message carries the retransmission times of the paging message, and repeatedly sends paging to the UE according to the retransmission times;

after the UE receives the paging, if the UE accesses the network, the paging is responded, namely the UE receives the paging message and responds, and the normal condition is marked. The MME of the core network may send a paging termination message to the base station if the timer is not overtime after receiving the paging response, and the base station may immediately terminate transmission of the paging message to the UE if there is a repeated paging message to be sent to the UE.

The length of the timer started by the core network is related to the number of times of repeatedly sending the paging message sent to the base station by the timer, and the timer is ensured to be overtime after the maximum number of times of repeatedly sending the paging message by the base station. If the timer times out, the core network does not need to inform the base station to stop paging.

Referring to fig. 6, corresponding to the method on the core network side, a paging control apparatus provided in the embodiment of the present application includes:

a determining unit 11, configured to determine that paging of a user equipment UE is required, and a base station is required to control paging retransmission;

a sending unit 12, configured to send a paging message to the base station, where the paging message carries indication information of paging retransmission times.

Referring to fig. 7, corresponding to the method on the access network side, a paging device provided in the embodiment of the present application includes:

a receiving unit 21, configured to receive a paging message that needs to page a UE and is sent by a core network;

and the paging unit 22 is configured to, if the paging message carries indication information of the number of times of paging retransmission, repeatedly send the paging message to the UE according to the indication information.

Referring to fig. 8, another paging control apparatus provided in an embodiment of the present application includes:

the processor 600, which is used to read the program in the memory 620, executes the following processes:

and sending a paging message to the base station through the transceiver 610, wherein the paging message carries indication information of paging retransmission times.

Preferably, the processor 600 determines that the UE needs to be paged by receiving a paging message from the UE through the transceiver 610.

Preferably, the processor 600 determines that the base station is required to control paging retransmission when one or a combination of the following conditions are satisfied:

Preferably, the processor 600 is further configured to: starting a preset timer while transmitting a paging message to the base station through the transceiver 610; before the timer is overtime, if a paging response message from the UE is received through the transceiver 610, a paging termination message for instructing the base station to stop paging the UE is issued to the base station through the transceiver 610.

A transceiver 610 for receiving and transmitting data under the control of the processor 600.

Where in fig. 8, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 600 and memory represented by memory 620. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 610 may be a number of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 600 in performing operations.

The processor may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD).

Referring to fig. 9, another paging apparatus provided in the embodiment of the present application includes:

a processor 504, configured to read the program in the memory 505, and execute the following processes:

receiving a paging message which is sent by a core network and needs to page User Equipment (UE) through a transceiver 501; if the paging message carries indication information of the number of times of paging retransmission, the paging message is repeatedly sent to the UE through the transceiver 501 according to the indication information.

Preferably, the processor 504 is further configured to: when a paging termination message, which is sent by the core network and used for instructing to stop paging the UE, is received through the transceiver 501, the sending of the paging message to the UE is stopped.

Preferably, when the paging termination message carries the identities of a plurality of UEs, the processor 504 stops sending paging messages to the plurality of UEs at the same time.

A transceiver 501 for receiving and transmitting data under the control of a processor 504.

In fig. 9, a bus architecture (represented by bus 500), bus 500 may include any number of interconnected buses and bridges, bus 500 linking together various circuits including one or more processors, represented by processor 504, and memory, represented by memory 505. The bus 500 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface 503 provides an interface between the bus 500 and the transceiver 501. The transceiver 501 may be one element or may be multiple elements, such as multiple receivers and transmitters, providing a means for communicating with various other apparatus over a transmission medium. Data processed by processor 504 is transmitted over a wireless medium via antenna 502, and further, antenna 502 receives data and transmits data to processor 504.

The processor 504 is responsible for managing the bus 500 and general processing, and may also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. And memory 505 may be used to store data used by processor 504 in performing operations.

Alternatively, the processor 504 may be a CPU (central processing unit), an ASIC (Application specific integrated Circuit), an FPGA (Field Programmable Gate Array), or a CPLD (Complex Programmable Logic Device).

To sum up, in the technical solution provided in the embodiment of the present application, the core network configures the retransmission times of the paging message to the base station, so that the base station performs paging retransmission control. After receiving the paging response of the terminal, the core network sends a paging termination message to the base station to terminate the relevant paging. Compared with the prior art, the method can reduce the occupation of the storage space of the core network and reduce the paging signaling load on the interface. And, can avoid the base station to send the waste of resources caused by paging message already responded repeatedly continuously.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A paging control method, comprising:

sending a paging message to the base station, wherein the paging message carries indication information of paging retransmission times;

determining that paging of the UE is required by receiving a paging message from the UE; determining that the base station is required to control paging retransmission when one or a combination of the following conditions are met:

2. The method of claim 1, further comprising:

starting a preset timer when sending a paging message to the base station;

and before the timer is overtime, if a paging response message from the UE is received, issuing a paging termination message for indicating the base station to stop paging the UE to the base station.

3. The method of claim 2, wherein the paging termination message carries identities of a plurality of UEs for instructing the base station to stop paging the plurality of UEs.

4. A method for paging, the method comprising:

if the paging message carries indication information of paging retransmission times, repeatedly sending the paging message to the UE according to the indication information; determining that paging retransmission needs to be controlled when one or a combination of the following conditions is satisfied:

5. The method of claim 4, further comprising:

6. The method of claim 5, wherein when the paging termination message carries identities of a plurality of UEs, sending the paging message to the plurality of UEs is stopped simultaneously.

7. A paging control apparatus, comprising:

a sending unit, configured to send a paging message to the base station, where the paging message carries indication information of paging retransmission times;

the determining unit determines that the UE needs to be paged by receiving a paging message from the UE; the determination unit determines that the base station is required to control paging retransmission when one or a combination of the following conditions are satisfied:

8. The apparatus of claim 7, wherein the sending unit is further configured to: starting a preset timer when sending a paging message to the base station; and before the timer is overtime, if a paging response message from the UE is received, issuing a paging termination message for indicating the base station to stop paging the UE to the base station.

9. The apparatus of claim 8, wherein the paging termination message carries identities of a plurality of UEs for instructing the base station to stop paging the plurality of UEs.

10. A paging device, comprising:

a paging unit, configured to repeatedly send a paging message to the UE according to indication information of paging retransmission times if the paging message carries the indication information; determining that paging retransmission needs to be controlled when one or a combination of the following conditions is satisfied:

11. The apparatus of claim 10, wherein the paging unit is further configured to: and when receiving a paging termination message which is sent by a core network and used for indicating to stop paging the UE, stopping sending the paging message to the UE.

12. The apparatus of claim 11, wherein the paging unit stops sending paging messages to the UEs at the same time when the paging termination message carries identities of the UEs.