KR102064930B1 - Method and apparatus for multi-casting transmission by using group identifier - Google Patents

Abstract

Provided are a multicasting transmission method and apparatus using a group ID. When the base station wants to transmit data to a plurality of terminals, the base station acquires a group ID for a group including the plurality of terminals, and transmits a paging message in a predetermined subframe in a radio frame corresponding to the group ID.

Description

Method and apparatus for multi-casting transmission by using group identifier

The present invention relates to multicasting transmission, and more particularly, to a method and apparatus for multicasting transmission using a group ID.

Machine-to-Machine (M2M) communication using multiple Internet of Things (or IoT) devices (S2M), sensing, processing, decision making, and acting on decisions It may be defined as ubiquitous communications between machines to perform various operations, such as those. The main difference between M2M and Human-to-Human (H2M) communications is the reduced human management in the communications life cycle. Nowadays, increasing automation is creating many heterogeneous new application services using M2M technology. This caused an explosion in the number of devices to which M2M technology was applied.

Standardization bodies such as 3GPP are proposing new technologies and standards such as machine type communications (MTC) and narrow band IoT (NB-IoT) as data transmission methods for such IoT devices in mobile communication networks.

In general, in a mobile communication network, a base station transmits data using a paging message indicating that there is data to be transmitted to a terminal in a radio resource control (RRC) idle mode. If the base station wants to transmit the same data to a plurality of terminals, if the terminal transmits a paging message using unique terminal ID information for each terminal, each terminal has a different paging frame (PF) and Paging Occasion (PO) The data must be received at different times. Accordingly, it is impossible for the base station to simultaneously transmit data to multiple terminals.

In addition, when a plurality of terminals want to receive data from the base station, since all terminals must perform a random access procedure, an overload may occur in the network. Therefore, there is a need for a method for effectively and simultaneously transmitting the same data to a plurality of mobile communication terminals.

The technical problem to be solved by the present invention is to provide a multicasting transmission method and apparatus capable of effectively transmitting data transmission to a plurality of terminals at the same time in a mobile communication network.

Another object of the present invention is to provide a method and apparatus for simultaneously transmitting data to terminals belonging to a group using group ID information when the base station of the network needs to transmit the same information to multiple terminals. It is.

According to an aspect of the present invention, there is provided a method for transmitting data by a base station, the method comprising: obtaining a group ID for a group including a plurality of terminals when data is to be transmitted to a plurality of terminals; And transmitting a paging message in a predetermined subframe within a radio frame corresponding to the group ID.

The transmitting of the paging message may include including the data in the paging message when the size of the data to be transmitted is smaller than a predetermined size.

The transmitting of the paging message may include transmitting frequency information and time information of a resource for transmitting the data in the paging message when the size of the data to be transmitted is larger than a predetermined size. have.

The transmission method may further include transmitting the data through a resource corresponding to the frequency information and time information.

The transmission method may further include generating a Multicast Paging Frame (MPF) and a Multicast Paging Occasion (MPO) using a group ID, wherein the MPF is a terminal in which a terminal belonging to the group searches for a paging message. The MPO may be a radio frame and may be a subframe in which an identifier indicating a paging message for a terminal belonging to the group is located.

The group ID may be generated based on group information. The group information may include one of a mobile subscriber group number (MSGN), a tracking area code (TAC), a closed subscriber group (CSG), a mobile country code (MCC), and an MNC. (Mobile Network Code), a combination of Mobile Subscriber Identification Number (MSIN), a combination of MCC, MNC, and TAC, and a combination of MCC, MNC, and CSG.

According to another aspect of the present invention, a reception method includes a method in which a terminal receives data, the terminal monitoring a predetermined subframe in a radio frame corresponding to a group to which the terminal belongs; And receiving a paging message according to the monitoring.

The receiving method may include: checking an indicator of data presence from the paging message; And when the data presence indicator indicates data inclusion, acquiring data from the received paging message.

The receiving method may include obtaining frequency and time information from the received paging message when the data presence indicator does not indicate data inclusion; And receiving data through a resource corresponding to the frequency and time information.

The monitoring may include monitoring a Multicast Paging Frame (MPF) and a Multicast Paging Occasion (MPO) corresponding to the group, wherein the MPF is one radio frame in which a terminal belonging to the group searches for a paging message. The MPO may be a subframe in which an identifier indicating a paging message for a terminal belonging to the group is located.

In accordance with still another aspect of the present invention, a base station includes: a transceiver for transmitting and receiving a signal through an antenna; And a processor connected to the transceiver and configured to perform data transmission processing for a plurality of terminals, wherein the processor is a group for a group including the plurality of terminals when data is to be transmitted to a plurality of terminals. Obtain an ID and transmit a paging message through the transceiver in a predetermined subframe in a radio frame corresponding to the group ID.

The processor may be configured to include the data in the paging message and transmit the data when the size of the data to be transmitted is smaller than a predetermined size.

When the size of the data to be transmitted is larger than a predetermined size, the processor includes frequency information and time information of a resource for transmitting the data in the paging message and transmits the data, and corresponds to the frequency information and time information. The data may be configured to be transmitted through a resource.

The processor may be configured to generate a Multicast Paging Frame (MPF) and a Multicast Paging Occasion (MPO) using a group ID, wherein the MPF is one radio frame in which a terminal belonging to the group searches for a paging message. The MPO may be a subframe in which an identifier indicating a paging message for a terminal belonging to the group is located.

Terminal according to another aspect of the invention, the transceiver for transmitting and receiving a signal through an antenna; And a processor connected to the transceiver, the processor configured to perform data reception processing, wherein the processor monitors a predetermined subframe in a radio frame corresponding to a group to which the terminal belongs, and the transceiver according to the monitoring. Can be configured to receive a paging message through.

The processor may be configured to identify a data presence indicator from the paging message and to obtain data from the received paging message when the data presence indicator indicates data inclusion.

The processor checks the data presence indicator from the paging message, and if the data presence indicator does not indicate the inclusion of data, obtains frequency and time information from the received paging message, and resource corresponding to the frequency and time information. Can be configured to receive data through.

According to an embodiment of the present invention, this can be effectively solved when attempting data transmission to a plurality of terminals at the same time in a mobile communication network. In particular, data may be simultaneously transmitted to a plurality of terminals belonging to a specific group using the group ID information. Accordingly, terminals corresponding to a specific group of the network can receive data of the base station without performing a random access procedure, thereby reducing the overload of the network.

In addition, since the same data can be transmitted to the terminals corresponding to a specific group of the network at the same time, it is possible to increase the resource utilization efficiency in terms of frequency and time.

1 is a diagram illustrating a network environment according to an embodiment of the present invention.
2 is a diagram illustrating the concept of paging frame (PF) and paging occupancy (PO) in a mobile communication network.
3 is a diagram illustrating the structure of IMSI and S-TMSI used in a mobile communication network.
4 is a diagram illustrating an MPF and an MPO according to an embodiment of the present invention.
5 is a conceptual diagram of a multicasting transmission method using a group ID according to an embodiment of the present invention.
6 is a flowchart illustrating a multicast data transmission method using a group ID of a base station according to an embodiment of the present invention.
7 is a flowchart illustrating a method for receiving multicast data using a group ID of a terminal according to an embodiment of the present invention.
8 is a structural diagram of a base station according to an embodiment of the present invention.
9 is a structural diagram of a terminal according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification and claims, when a portion is said to include a certain component, it means that it can further include other components, except to exclude other components unless specifically stated otherwise.

Throughout the specification, a terminal may be a user equipment (UE), a mobile terminal (MT), a mobile station (MS), an advanced mobile station (AMS), a high reliability mobile station ( It may also refer to a high reliability mobile station (HR-MS), a subscriber station (SS), a portable subscriber station (PSS), an access terminal (AT), and the like. It may also include all or part of the functions, such as AMS, HR-MS, SS, PSS, AT.

In addition, a base station (BS) may be an advanced base station (ABS), a high reliability base station (HR-BS), a node B (node B), an advanced node B (evolved node B, eNodeB or eNB), access point (access point (AP)), radio access station (radio access station (RAS)), base transceiver station (base transceiver station (BTS), mobile multihop relay (BSR) -BS, a relay that performs the role of a base station (relay station, RS), relay node (RN) serving as base station, advanced relay station (ARS) serving as base station, high reliability relay station serving as base station , HR-RS), small base stations (femoto BS), home node B (HNB), home eNodeB (HeNB), pico base station (pico BS), metro base station (metro BS), micro base station ( micro BS), etc.), and may be referred to as eNode, ABS, Node B, eNodeB, eNB, AP, RAS, BTS, MMR-BS, RS, RN, ARS, HR-RS, small base station. It may also include all or part of the function.

Hereinafter, a multicasting transmission method and apparatus according to an embodiment of the present invention will be described.

1 is a diagram illustrating a data reception procedure by paging in a mobile communication network.

In order to reduce power loss, the base station transmits data using a paging message indicating that there is data to transmit to the UE in a Radio Resource Control (RRC) idle mode.

In such an environment, as shown in FIG. 1, the UE (UE) 101 in the RRC idle mode has a paging message transmitted from the base station (eNodeB) 102 to the UE itself at every Discontinuous Reception (DRX) cycle 104. Check it. To this end, the UE monitors the P-RNTI 105 in the physical downlink control channel (PDCCH) at predetermined intervals. When the terminal 101 receives the paging message 106 and has data to be transmitted to the terminal itself, the terminal 101 connects to the base station 102 according to the random access procedure 107 and receives the data 108.

2 is a diagram illustrating the concept of paging frame (PF) and paging occupancy (PO) in a mobile communication network.

In monitoring the PDCCH to check whether there is a paging message, the UE monitors the PDCCH in order to reduce battery consumption during the PF 201 and PO 202 periods corresponding to a specific UE, that is, during a specific subframe period within a specific radio frame. Only monitor the PDCCH. The PF 201 is one radio frame in which the terminal searches for a paging message, and the PO 202 is a subframe in which the P-RNTI is transmitted on the PDCCH indicating the paging message of the terminal.

3 is a diagram illustrating the structure of IMSI and S-TMSI used in a mobile communication network.

Important information for determining PF and PO for paging message reception is UE ID (UE_ID). The UE ID (UE_ID) may be obtained by, for example, a formula of "IMSI mod 1024". Here, the IMSI is an International Mobile Subscriber Identity, and is composed of a combination of a Mobile Country Code (MCC), a Mobile Network Code (MCC), and a Mobile Subscriber Identification Number (MSIN), as shown in FIG.

In addition, the UE ID (UE_ID) may be obtained by using SAE Temporary Mobile Subscriber Identity (S-TMSI). S-TISI is composed of a combination of MME Code (MMEC) and MME Temporary Mobile Subscriber Identity (M-TMSI), as shown in FIG.

When the base station transmits the same data to a plurality of terminals, if the terminal transmits the paging message using a unique terminal ID (UE_ID) unique to each terminal, each terminal has a different PF and PO, each terminal The data must be received at another time. Accordingly, it is impossible for the base station to simultaneously transmit data to multiple terminals.

In an embodiment of the present invention, data is simultaneously transmitted to terminals belonging to a group by using group ID information. To this end, a new group ID (Group_ID) is used instead of the UE ID (UE_ID) for multicasting data transmission, and an MPF (Multicast Paging Frame) and an MPO (Multicast Paging Occasion) are generated using the group ID (Group_ID). .

4 is a diagram illustrating an MPF and an MPO according to an embodiment of the present invention.

In an embodiment of the present invention, at least one group including at least one terminal is formed. Here, the group is a group for simultaneously transmitting data to a plurality of terminals, and may be referred to as a multicast group.

A group ID (Group_ID) is assigned to each group, and an MPF (eg, 401) and an MPO (eg, 402) are configured to correspond to the group ID (Group_ID) of each group. The MPF 401 is one radio frame in which terminals belonging to a multicast group find a paging message, and the MPO 402 is a P-RNTI transmitted on a PDCCH indicating a paging message for terminals belonging to a multicast group. Subframe located.

In order to reduce battery consumption, the UE belonging to a specific multicast group monitors the PDCCH only during an MPF 401 section and an MPO 402 section, that is, a specific subframe section within a specific radio frame, corresponding to the multicast group.

Group ID (Group_ID) according to an embodiment of the present invention can be obtained, for example, by the formula "Group_Info mod 1024". Group_Info represents group information. Group_Info may be used with a Mobile Subscriber Group Number (MSGN). In addition, Group_Info may be used with a tracking area code (TAC). In addition, Group_Info may be used with a Closed Subscriber Group (CSG). In addition, Group_Info may be composed of a combination of an existing MCC, MNC and a new Mobile Subscriber Group Number (MSGN). In addition, Group_Info may be configured by a combination of the existing MCC, MNC, and TAC. In addition, Group_Info may be composed of a combination of existing MCC, MNC, and CSG.

5 is a conceptual diagram of a multicasting transmission method using a group ID according to an embodiment of the present invention.

In an embodiment of the present invention, UEs 0501 and UE 1502 that are in the RRC idle mode belong to the same group, Group 1503, and the base station 504 is UE 0501 and the UE. Assume that you have the same data to send to 1 (502).

In this state, as shown in FIG. 5, UE 0 501 and UE 1 502, which belong to the same group as Group 1 503, are transmitted to themselves every M_DRX (Multicast DRX, 504) cycle. Check for messages. In particular, in an embodiment of the present invention, UEs 0501 and UE1502, which belong to the same group of Group 1503, monitor the MPF and MPO corresponding to Group 1503. That is, the PDCCH is monitored only during a specific subframe period within a specific radio frame corresponding to the group 1 503. Thereafter, the MPO 506 corresponding to the group 1 503 receives the paging message 507 using the P-RNTI information.

If the size of the multicasting data to be transmitted is smaller than the set size, the base station 504 includes the data in the paging message 507 and transmits the data. In addition, when the size of the multicasting data to be transmitted is larger than the set size, the base station 504 transmits the paging message 507 including frequency and time information used to transmit the data. For this purpose, an indicator indicating whether data is included may be included in the paging message 507. Indicators indicating the presence or absence of data are referred to as "data presence indicators" for convenience of explanation. The terminals may check a data presence indicator indicating whether data is included in the paging message 507 and determine data reception.

UE 0 501 and UE 1 502, which are terminals belonging to the same group Group 503, receive a paging message 507, a data presence indicator is included in the paging message 507, and data is present. When the indicator indicates the inclusion of data, the paging message 507 is received while receiving the data inside the paging message 507. When the size of the multicasting data is smaller than the set size, the data is included in the paging message and transmitted. Thus, data for a plurality of terminals belonging to the group 1 are transmitted at the same time, and the terminals simultaneously receive the corresponding data. do.

On the other hand, when the data presence indicator indicates that no data is included, UE 0 501 and UE 1 502, which belong to the same group, Group 1 503, are internal frequency in the paging message 507. And time information, and the multicast data 509 is simultaneously received at a time point (MRO, Multicast Receive Occasion, 508) when the base station transmits data using the obtained information.

As data is transmitted at a time point corresponding to the frequency and time information included in the paging message, data for a plurality of terminals belonging to Group 1 are simultaneously transmitted, and the corresponding terminals simultaneously receive the corresponding data.

Meanwhile, group information, frequency information, time information, and the like are included in a paging message according to an embodiment of the present invention. The group information may include a group ID for identifying a group to which the terminals belong. The frequency information may include a sub-carrier of a frequency transmitted by the base station, a resource block, an anchor carrier, a non-anchor carrier, and the like. The time information may include a data transmission start time (subframe) and an end time (subframe), data transmission repetition number and data transmission duration of the data transmitted by the base station.

6 is a flowchart illustrating a multicast data transmission method using a group ID of a base station according to an embodiment of the present invention.

The base station checks the size of data to be transmitted for the multicast group to which at least one terminal belongs (S100).

If the size of the data to be transmitted is smaller than the set size (S110), the base station includes the data in the paging message (S120). The paging message is transmitted through the PDCCH in the MPF and the MPO corresponding to the multicast group, that is, during the specific subframe period in the specific radio frame (S130). The paging message may include data presence indicator.

On the other hand, if the size of the data to be transmitted is larger than the set size, the base station includes the frequency and time information corresponding to the resource to transmit data in the paging message (S140). The paging message is transmitted through the PDCCH during a specific subframe period in a specific radio frame corresponding to the multicast group (S150). Thereafter, the base station transmits data for the corresponding multicast group through a resource corresponding to the frequency and time information included in the paging message (S160).

7 is a flowchart illustrating a method for receiving multicast data using a group ID of a terminal according to an embodiment of the present invention.

The terminal monitors the MPF and the MPO corresponding to the multicast group to which the terminal belongs. That is, the PDCCH is monitored during a specific subframe period of the radio frame corresponding to the group ID of the multicast group to which the UE belongs (S300).

A paging message is received using the P-RNTI information in the MPO which is a specific subframe (S310).

The terminal checks the data presence indicator on the received paging message, and determines whether the data presence indicator indicates data inclusion (S320).

If the data presence indicator included in the received paging message indicates data inclusion (S330), the terminal obtains data from the received paging message (S340).

On the other hand, if the data presence indicator does not indicate the inclusion of data, the terminal obtains the frequency and time information from the paging message (S350). Thereafter, multicast data is received at the time point (MRO) at which the base station transmits data using the obtained frequency and time information (S360).

8 is a structural diagram of a base station according to an embodiment of the present invention.

As shown in FIG. 8, the base station 1 according to the embodiment of the present invention includes a processor 11, a memory 12, and a transceiver 13.

The processor 11 may be configured to implement the methods described with reference to FIGS. 4 through 6 above.

The memory 12 is connected to the processor 11 and stores various information related to the operation of the processor 11. The memory 12 may store instructions for execution by the processor 11 or may temporarily store the instructions by loading the instructions from a storage device (not shown).

The processor 11 may execute instructions stored or loaded in the memory 12. The processor 11 and the memory 12 may be connected to each other through a bus (not shown), and an input / output interface (not shown) may also be connected to the bus.

The transceiver 13 may transmit and receive a signal through an antenna, transmit a signal processed by the processor 11, or process a signal received through the antenna and transmit the signal to the processor 11.

9 is a structural diagram of a terminal according to an embodiment of the present invention.

As shown in FIG. 9, the terminal 2 according to an exemplary embodiment of the present invention includes a processor 21, a memory 22, and a transceiver 23.

The processor 21 may be configured to implement the methods described with reference to FIGS. 4, 5, and 7 above.

The memory 22 is connected to the processor 21 and stores various information related to the operation of the processor 21. The memory 22 may store instructions for execution by the processor 21 or may temporarily store the instructions by loading the instructions from a storage device (not shown).

The processor 21 may execute instructions stored or loaded in the memory 22. The processor 21 and the memory 22 are connected to each other through a bus (not shown), and the input / output interface (not shown) may also be connected to the bus.

The transceiver 23 may transmit and receive a signal through an antenna, transmit a signal processed by the processor 21, or process a signal received through the antenna and transmit the signal to the processor 21.

An embodiment of the present invention is not implemented only through the above-described apparatus and / or method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention, a recording medium on which the program is recorded, and the like. Such implementations may be readily implemented by those skilled in the art from the description of the above-described embodiments.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of the operator using the basic concepts of the present invention as defined in the following claims are also provided. It belongs to the scope of rights.

Claims (17)

As the base station transmits data,
Obtaining a group ID for a group including the plurality of terminals when data is to be transmitted to a plurality of terminals; And
Transmitting a paging message in a predetermined subframe in a radio frame corresponding to the group ID
Including,
The radio frame and the predetermined subframe are configured to correspond to the group ID. The radio frame is a radio frame in which a terminal belonging to the group of the group ID searches for a paging message, and the predetermined subframe is a group of the group ID. And a subframe in which an identifier indicating a paging message for a terminal belonging to the is located. The method of claim 1
The step of transmitting the paging message,
If the size of the data to be transmitted is smaller than a predetermined size, transmitting the data by including the data in the paging message
Including, the transmission method. The method of claim 1
The step of transmitting the paging message,
When the size of the data to be transmitted is larger than a predetermined size, transmitting the paging message by including frequency information and time information on a resource to be transmitted.
Including, the transmission method. The method of claim 3,
Transmitting the data through a resource corresponding to the frequency information and time information
Further comprising, the transmission method. The method of claim 1
Generating Multicast Paging Frame (MPF) and Multicast Paging Occasion (MPO) using Group ID
More,
The MPF is a radio frame in which a terminal belonging to the group searches for a paging message, and the MPO is a subframe in which an identifier indicating a paging message for a terminal belonging to the group is located. The method of claim 1
The group ID is generated based on the group information,
The group information,
One of Mobile Subscriber Group Number (MSGN), Tracking Area Code (TAC), Closed Subscriber Group (CSG),
A combination of Mobile Country Code (MCC), Mobile Network Code (MCC), Mobile Subscriber Identification Number (MSIN),
A combination of MCC, MNC, and TAC, and
Combination of MCC, MNC, and CSG
The transmission method is configured based on one of the. As a method for receiving data by the terminal,
Monitoring, by the terminal, a predetermined subframe in a radio frame corresponding to a group to which the terminal belongs; And
Receiving a paging message according to the monitoring
Including,
The radio frame and the predetermined subframe are configured to correspond to a group ID of a group to which the terminal belongs, and the radio frame is a radio frame for which a terminal belonging to the group of the group ID searches for a paging message. And a subframe in which an identifier indicating a paging message for a terminal belonging to the group of the group ID is located. The method of claim 7,
Checking data presence indicators from the paging message; And
Acquiring data from the received paging message if the data presence indicator indicates data inclusion;
Further comprising, the receiving method. The method of claim 8
Obtaining frequency and time information from the received paging message if the data presence indicator does not indicate data inclusion; And
Receiving data through a resource corresponding to the frequency and time information
Further comprising, the receiving method. The method of claim 7,
The monitoring may include monitoring a Multicast Paging Frame (MPF) and a Multicast Paging Occasion (MPO) corresponding to the group,
The MPF is a radio frame in which a terminal belonging to the group searches for a paging message, and the MPO is a subframe in which an identifier indicating a paging message for a terminal belonging to the group is located. Transmitting and receiving unit for transmitting and receiving a signal through an antenna; And
It is connected to the transceiver, and includes a processor for performing data transmission processing for a plurality of terminals,
The processor,
In order to transmit data to a plurality of terminals, to obtain a group ID for a group including the plurality of terminals, and to transmit a paging message through the transceiver in a predetermined subframe in a radio frame corresponding to the group ID. Is composed,
The radio frame and the predetermined subframe are configured to correspond to the group ID. The radio frame is a radio frame in which a terminal belonging to the group of the group ID searches for a paging message, and the predetermined subframe is a group of the group ID. A base station, which is a subframe in which an identifier indicating a paging message for a terminal belonging to is located. The method of claim 11,
And the processor is configured to include the data in the paging message and transmit the data when the size of the data to be transmitted is smaller than a predetermined size. The method of claim 11,
The processor,
When the size of the data to be transmitted is larger than a predetermined size, the paging message includes frequency information and time information of a resource to be transmitted and transmits the data, and transmits the data through a resource corresponding to the frequency information and time information. And configured to transmit data. The method of claim 11,
The processor is configured to generate a Multicast Paging Frame (MPF) and a Multicast Paging Occasion (MPO) using a group ID.
The MPF is a radio frame in which a terminal belonging to the group searches for a paging message, and the MPO is a subframe in which an identifier indicating a paging message for a terminal belonging to the group is located. Transmitting and receiving unit for transmitting and receiving a signal through an antenna; And
A processor connected to the transceiver, the processor configured to perform data reception processing;
The processor is configured to monitor, by a terminal, a predetermined subframe in a radio frame corresponding to a group to which the terminal belongs, and to receive a paging message through the transceiver according to the monitoring.
The radio frame and the predetermined subframe are configured to correspond to a group ID of a group to which the terminal belongs, and the radio frame is a radio frame for which a terminal belonging to the group of the group ID searches for a paging message. And a subframe in which an identifier indicating a paging message for a terminal belonging to the group of the group ID is located. The method of claim 15
The processor,
Confirm data presence indicator from the paging message, and if the data presence indicator indicates data inclusion, obtain data from the received paging message. The method of claim 15
The processor,
Acknowledge data presence indicator from the paging message, and if the data presence indicator does not indicate data inclusion, obtain frequency and time information from the received paging message, and obtain data through a resource corresponding to the frequency and time information. A terminal configured to receive.

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