KR20120124042A - Method of transmitting group paging message, base station and mobile station - Google Patents

Abstract

PURPOSE: A group paging message transmission method, reception method, base station, and mobile station are provided to effectively transmit a group paging message to all terminals which belong to one group. CONSTITUTION: A group paging frame determination unit(120) creates a group paging indicator based on the determined frame. A paging group information transmission unit(130) creates a paging group information message. The paging group information transmission unit transmits the created paging group information message to a mobile station. The paging group information message includes the group paging indicator. A paging transmission unit(140) transmits a group paging message to a frame corresponding to the group paging indicator in a paging reception section. [Reference numerals] (100) Base station; (110) Idle state information allocation unit; (120) Group paging frame determination unit; (130) Paging group information transmission unit; (140) Paging transmission unit

Description

METHOD OF TRANSMITTING GROUP PAGING MESSAGE, BASE STATION AND MOBILE STATION}

The present invention relates to a base station and a mobile station. In particular, the present invention relates to a method of transmitting a group paging message of a base station and a method of receiving a group paging message of a mobile station.

In the mobile communication system, a terminal in an idle state is a base station during a paging listening interval determined by parameters such as a paging group, a paging cycle, and a paging offset to which the terminal belongs. Monitor whether a paging message (AAI-PAG-ADV message) is transmitted from the. Each terminal checks whether the idle state identifier of the individual terminal is included in the received paging message and confirms paging.

At this time, the paging message transmitted from the base station is transmitted in some specific frame interval within the paging reception interval. This may transmit a paging message including paging information for different mobile terminals for each frame in the paging reception interval to distribute the paging message according to the load of the paging message. The specific frame interval in which the paging message is transmitted for each idle terminal is included in the idle state identifier (Dreg) and paging group information message (PGID-Info message) allocated to each idle terminal. It is determined based on the value.

In a mobile communication system supporting machine to machine communication (M2M communication), when a common data is effectively transmitted to a plurality of terminals and a plurality of terminals in a very large number of idle states are connected at once. In order to switch, a group paging scheme is used to efficiently control the terminals. To this end, an M2M group to which a plurality of terminals belong is defined, and the corresponding group is identified through an M2M group identifier (MGID). The M2M group identifier is equally assigned to all terminals belonging to the group. If the terminal is not excluded from the group, the M2M group identifier information is maintained by the terminal even when the terminal is in an idle state. In addition, the M2M group identifier (MGID) is included in the paging message transmitted from the base station to the terminal instead of the identifier (DID) of the idle state terminal. Accordingly, the idle terminal belonging to the M2M group should monitor whether the paging message transmitted from the base station includes the M2M group identifier (MGID) in addition to its idle state identifier (DID). Hereinafter, for convenience of description, a paging message for group paging including an M2M group identifier instead of an individual idle identifier is called a group paging message.

On the other hand, the terminal in the idle state monitors only the paging message of a specific frame determined based on its idle state identifier (DID) within the paging receiving interval, paging that should monitor whether or not to transmit the paging message even to the terminals belonging to the same M2M group Specific frame sections within the section may be different. Accordingly, in order for all terminals to properly receive a group paging message for all terminals belonging to the M2M group, the base station should repeatedly transmit a paging message including the same group identifier (MGID) during the paging reception interval. Accordingly, the effectiveness of the group paging scheme used for efficient control of the plurality of terminals can be reduced.

The present invention provides a method for efficiently transmitting and receiving a group paging message to all terminals belonging to one group in a mobile communication system, and a base station and a mobile station using the same.

A method according to an embodiment of the present invention is a method of transmitting a group paging message of a base station, comprising: determining a frame to transmit a group paging message corresponding to a group of mobile stations to be group paging; Generating a group paging indicator including information on the determined frame; Generating and sending a paging group information message including the group paging indicator to a mobile station; And transmitting a group paging message for the group of mobile stations in the determined frame of the paging reception interval including a plurality of frames.

The determining of the frame may determine a frame to transmit the group paging message among frames in which a paging message determined by a time domain hash parameter is transmitted in the paging reception interval.

Meanwhile, the group paging indicator may consist of 1 bit. In this case, when the group paging indicator is "0", it indicates that the group paging message is transmitted through the first frame of the paging reception interval, and when the group paging indicator is "1", the group paging message is the paging reception interval. It may indicate that the paging message is transmitted through the last frame among the frames transmitted by the base station.

In addition, the group paging indicator may be composed of as many bits as necessary to represent each frame according to the number of frames constituting the paging reception interval. In this case, if the group paging indicator is composed of 2 bits and the value is "00", it indicates that the group paging message is transmitted through the first frame of the paging reception interval, and the group paging indicator is composed of 2 bits and the value is "01" indicates that a group paging message is transmitted through a second frame of the paging reception interval, and if the group paging indicator consists of two bits and "10", group paging through the third frame of the paging reception interval. When the group paging indicator is 2 bits and the value is "11", it indicates that the group paging message is transmitted through the fourth frame of the paging reception interval.

In addition, the group paging indicator may include a group paging presence indicator indicating the presence or absence of group paging and a group paging location indicator indicating the location information of the group paging message.

A method according to another embodiment of the present invention is a method of receiving a group paging message of a mobile station, the method comprising: receiving a group identifier assignment for a group to which the mobile station belongs from a base station; Receiving from the base station a paging group information message comprising a group paging indicator; Identifying a frame to which a group paging message is to be transmitted based on the group paging indicator; And receiving the group paging message by monitoring the identified frame in a paging reception interval, and confirming a group identifier to which the mobile station belongs in the received paging message.

The receiving of the group paging message may include: receiving a group paging message by monitoring a first frame among frames in which a paging message is transmitted during the paging reception interval when the group paging indicator is "0"; And when the group paging indicator is "1", receiving a group paging message by monitoring a last frame among frames in which a paging message is transmitted during the paging reception interval.

The receiving of the group paging message may include: receiving a group paging message by monitoring a first frame of the paging reception interval when the group paging indicator is 2 bits and its value is "00"; If the group paging indicator consists of 2 bits and its value is "01", monitoring a second frame of the paging reception interval to receive a group paging message; If the group paging indicator consists of 2 bits and its value is "10", monitoring a third frame of the paging reception interval to receive a group paging message; And if the group paging indicator consists of 2 bits and its value is "11", monitoring a fourth frame of the paging reception interval and receiving a group paging message.

In the receiving of the group paging message, when the group paging indicator includes a group paging presence indicator and a group paging location includes a group indicator, when the group paging presence indicator indicates group paging, a frame indicated by the group paging location indicator is indicated. The group paging message may be received by monitoring.

In addition, the base station according to another embodiment of the present invention, an idle state information allocator for allocating idle state information including an idle state identifier, a paging cycle, a paging offset, and a paging group identifier to the mobile station in the idle state; A group paging frame determination unit for determining a frame for transmitting a group paging message for a group of mobile stations and generating a group paging indicator based on the determined frame; A paging group information transmitter for generating and sending a paging group information message including the group paging indicator to a mobile station; And a paging transmitter configured to transmit a group paging message in a frame corresponding to the group paging indicator among a paging receiving interval including a plurality of frames.

The group paging frame determiner may determine a frame to transmit the group paging message among frames in which a paging message determined by a time domain hash parameter is transmitted in the paging receiving interval, and the paging group information transmitter may determine the time domain hash. A parameter may be included in the paging group information message and transmitted.

The group paging frame determiner may generate a group paging indicator including a group paging presence indicator indicating the presence or absence of group paging and a group paging location indicator indicating the location information of the group paging message according to the determined frame.

In addition, the mobile station according to another embodiment of the present invention, the idle state information receiving unit for receiving an idle state identifier, a paging cycle, a paging offset, and a paging group identifier from the base station; A paging group information receiver for receiving a paging group information message including a group paging indicator from a base station; A group paging indicator confirmation unit extracting a group paging indicator from the received paging group information message and confirming a frame in which a group paging message is transmitted based on the group paging indicator; And a group paging receiver configured to receive a group paging message by monitoring a frame identified according to the group paging indicator in a paging reception interval including a plurality of frames, and to identify a group identifier to which the mobile station belongs in the received paging message. .

Here, when the group paging indicator is "0", the group paging receiver may receive a group paging message by monitoring a first frame among frames in which a paging message is transmitted during the paging reception interval. In the case of "1", a group paging message may be received by monitoring a last frame among frames in which a paging message is transmitted during the paging reception interval.

When the group paging indicator includes a group paging presence indicator and a group paging location indicator, when the group paging presence indicator indicates group paging, the group paging receiver monitors a frame indicated by the group paging location indicator to monitor the group paging message. Can be received.

According to an embodiment of the present invention, in the case of group paging in the mobile communication system, when the paging related information is transmitted, the mobile station can efficiently monitor and receive the group paging message by adding and transmitting location information for transmitting the group paging message. Can be. In addition, since the base station does not have to repeatedly transmit the group paging message during group paging, the base station can efficiently transmit the group paging message. Therefore, efficient control of a plurality of mobile stations is achieved through group paging.

1 is a diagram illustrating a frame in which a conventional paging message is transmitted.
2 is a flowchart illustrating a conventional group paging message transmission process.
3 is a flowchart illustrating a method of transmitting a paging message according to an embodiment of the present invention.
4 and 5 are exemplary views illustrating a paging message transmission process according to an embodiment of the present invention.
6 is a block diagram showing the structure of a base station according to an embodiment of the present invention.
7 is a block diagram showing the structure of a mobile station according to an embodiment of the present invention.

DETAILED DESCRIPTION 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. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. 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, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

In this specification, a mobile station (MS) includes a terminal, a mobile terminal (MT), a subscriber station (SS), a portable subscriber station (PSS), and a user equipment. It may also refer to a user equipment (UE), an access terminal (AT), and the like, and may include all or some functions of a mobile terminal, a subscriber station, a portable subscriber station, a user device, and the like.

In this specification, a base station (BS) is an access point (AP), a radio access station (RAS), a node B, a base transceiver station (BTS) Mobile Multihop Relay) -BS, and may include all or some of the functions of an access point, a radio access station, a Node B, a base transceiver station, and an MMR-BS.

Hereinafter, a paging message transmission method and a base station using the same according to an embodiment of the present invention will be described with reference to the accompanying drawings.

In a mobile communication system, a base station performs group paging to efficiently control mobile stations. For example, group paging is performed to effectively transmit common data to a plurality of mobile stations or to switch a plurality of mobile stations in an idle state at once.

For group paging, a group to which a plurality of mobile stations belong, for example, a machine to machine (M2M) group, is defined. A group identifier, that is, an M2M group identifier (MGID), is assigned to the M2M group. Unless the mobile station is excluded from the group, even if the state of the terminal is changed to the idle state, the mobile station maintains the M2M group identifier of the group.

A paging message (or AAI paging advertisement message, AAI-PAG-ADV message) for group paging of these mobile stations may include fields as shown in Table 1 below.

Field Size
(bits) Value / Description Condition
For (i = 0; i <Num_MGID; i ++) { Num_MGID indicate the number of MGIDs included in this paging message Shall be included if ABS sends DL multicast data for M2M after transmission of the AAI-PAG-ADV message MGID 15 M2M Group ID Action code One 0: Performing the network reentry
1: Receiving the multicast traffic If (Action code == 1) { Multicast transmission start time (MTST) TBD Least Significant TBD bits of the frame number in which the ABS starts sending the DL multicast data. Shall be present when the MTST need be included in this message } }

As shown in Table 1, the paging message includes an M2M group identifier field (MGID) and an action code field (action code) to page. The action code field contains an action code for controlling the operation of a mobile station in an idle state. In this case, when the action code is "0", it is instructed to perform network reentry in order to switch the plurality of mobile stations in the idle state to the connected state at once, and "1" indicates to receive the multicast traffic.

The base station transmits a paging message including paging information for different mobile stations for each frame in a paging listening interval to distribute the paging message according to the load of the paging message. The frame on which the paging message including the paging information is transmitted may be determined according to the following equation.

[Equation 1]

N _{paging frame} = AMS's deregisration identifier mod m

Where N _{paging The frame} represents a specific frame in which the paging message is transmitted in the paging reception interval, and the AMS's deregisration identifier represents an idle status identifier (DID) of the mobile station. M denotes the total number of frames in which the paging message is actually transmitted among the plurality of frames constituting the paging reception interval, and a time domain hash parameter used by the mobile station to determine a specific frame in which the paging message is transmitted. Indicates. And mod represents a modulo operation. In accordance with Equation 1, the idle state identifier (DID) of the mobile station is obtained by dividing the remainder (r) by m, which is the total number of frames for which a paging message is transmitted, and the r th frame among the plurality of frames included in the super frame is obtained. Determine as a frame for transmitting the paging message for.

1 is a diagram illustrating a frame in which a conventional paging message is transmitted.

Among the plurality of frames of the superframe constituting the paging reception interval, a paging message for the corresponding mobile station is transmitted in a specific frame determined according to Equation 1 above. For example, in the first frame, a paging group information message (PGID_Info message) that provides paging related information of the base station is transmitted to notify each mobile station of "m". For example, if m is 2 in a specific frame determined according to Equation 1 above, a paging message for the first mobile station having an even DID in the first frame is transmitted, and the second mobile station having an odd DID in the second frame. A paging message for is sent.

2 is a flowchart illustrating a conventional group paging message transmission process.

Mobile stations (M2M devices) belonging to any M2M group simultaneously monitor paging reception intervals for individual paging and group paging.

Therefore, when performing group paging by the conventional method for transmitting a paging message, as shown in FIG. 2, the base station transmits a paging information group message (PGID_info message) including m = 4, and then m and the corresponding group. Each paging message is transmitted to the mobile stations in the idle state through a frame determined by the idle state identifier (DID) of the mobile station belonging to.

Therefore, even if mobile stations included in the same group having the M2M group identifier (MGID # 1), as shown in FIG. 2, the paging message should be monitored at different locations according to each idle state identifier (DID). In addition, the base station must repeatedly transmit a paging message including the M2M group identifier (MGID) within the paging reception interval to page all mobile stations included in the same group. Therefore, inefficiency of paging message transmission occurs.

According to an embodiment of the present invention, in order to efficiently transmit a paging message of a base station, the base station uses a group paging indicator (group paging indicator) which is location information on which a group paging message is transmitted during a paging reception period in a paging group information message (PGID_info message). )

The group paging indicator according to an embodiment of the present invention indicates frame information in which a group paging message including an M2M group identifier (MGID) is transmitted.

The group paging indicator may consist of 1 bit.

For example, when the base station transmits a group paging message including the M2M group identifier (MGID) through the first frame of the paging reception interval, the group paging indicator may be displayed as "0". On the other hand, when the group paging message is transmitted through the last frame of the paging reception interval, the group paging indicator may be displayed as "1". Here, the last frame in which the group paging message is transmitted when the group paging indicator is 1 may be determined by a parameter m included in the paging group information message. For example, if the value of m is 1, both the first frame and the last frame correspond to the first frame. Therefore, a group paging message for all groups is transmitted through the first frame. The paging message is transmitted through the first and second frames, and the last frame corresponds to the second frame. Next, when the value of m is 3, the group paging message is transmitted through the first frame and the third frame, and the last frame represents the third frame. When the value of m is 4, the group paging message may be transmitted through the first frame and the fourth frame, and the last frame represents the fourth frame.

The paging group information message according to an embodiment of the present invention having such a feature may include fields shown in Table 2 below.

Field Size
(bits) Value / Description Condition For (i = 0; i <Num_PGIDs; i ++) { PGID 16 m 2 Group Paging indicator One Indicate the location of group paging message
0: the first among frames determined by the value of 'm'
1: the last among frames determined by the value of 'm }

In Table 2, the PGID field indicates an identifier of a paging group supported by the base station. m represents a time domain hash parameter used by the mobile station to determine a specific frame in which a paging message is transmitted among a plurality of frames constituting the paging reception interval. The Group Paging indicator field represents a group paging indicator according to an embodiment of the present invention.

Meanwhile, the group paging indicator may consist of 2 bits. In this case, the case where the number of frames constituting the paging reception interval is 4 is taken as an example. Accordingly, the group paging indicator may be composed of 2 bits.

In this case, the 2-bit value of the group paging indicator may directly indicate a frame indicated by the group paging message as shown in Table 3 below.

Group Paging indicator 2 Indicate the location of group paging message within paging listening interval
00: 1st frame
01: 2 ^nd frame
10: 3 ^rd frame
11: 4 ^th frame

As shown in Table 3, each value of the group paging indicator represents a frame value in which the group paging message is transmitted among the frames in the paging reception interval. For example, "00" transmits a group paging message through the first frame, "01" transmits a group paging message through the second frame, and "10" transmits a group paging message through the third frame. 11 "indicates that the group paging message is transmitted on the fourth frame. The number of bits of the group paging indicator is not limited to that described above, and the group paging indicator may be composed of as many bits as necessary to represent each frame according to the number of frames constituting the paging reception interval.

On the other hand, unlike the above description, when the group paging indicator is composed of 2 bits, one 1 bit may be used as an indicator indicating the presence or absence of group paging, and the remaining 1 bit may be used as an indicator indicating frame information in which the group paging message is transmitted. have. In this case, the value of each bit of the group paging indicator may indicate whether a group paging message is transmitted and a frame to be transmitted as shown in Table 4 below.

Group Paging indicator 2 Indicate the location of group paging message

1 ^st bit: Indicate the existence of group paging
0: no group paging
1: one or more group paging
2 ^nd bit: Indicate the location of group paging message
0: the first among frames determined by the value of 'm'
1: the last among frames determined by the value of'm

As shown in Table 4, the group paging indicator includes a group paging presence indicator (1 bit) and a group paging location indicator (1 bit). For example, if the group paging presence indicator is "0", it indicates that there is no group paging during the corresponding paging reception interval, and "1" indicates that at least one group paging is during the corresponding paging reception interval. If the group paging position indicator is "0", it indicates that the group paging message is transmitted through the first frame of the paging reception interval, and "1" indicates that the group paging message is transmitted through the last frame of the paging reception interval. The last frame may be determined by the parameter m included in the paging group information message as in Table 2.

In an embodiment of the present invention, when the base station performs group paging for mobile stations that are M2M devices belonging to a predetermined M2M group, frame information in which a group paging message is transmitted while being configured in various forms as described above in a paging group information message Include and send a group paging indicator.

The mobile station may check the group paging indicator through the paging group information message and monitor the group paging message in a frame corresponding to the group paging indicator to receive the group paging message. Here, only the case where the group paging message is transmitted, the frame in which the individual paging message is transmitted is monitored separately by the mobile station, it is possible to monitor the frame determined according to Equation 1 above.

Next, a method of transmitting a paging message according to an embodiment of the present invention will be described in more detail.

3 is a flowchart illustrating a method of transmitting a paging message according to an embodiment of the present invention. 4 and 5 are exemplary views illustrating a paging message transmission process according to an embodiment of the present invention.

The base station transmits information for paging to the mobile station using the paging group information message. The location of the paging group information message is pointed by the map located in each frame. The paging group information message may include a time domain hash parameter m, a paging group identifier, and a group paging indicator for each of the plurality of paging group identifiers (PGIDs).

M2M group identifiers are allocated to mobile stations in the connected state belonging to the M2M group (S100 and S110). Then, when the connected state mobile station is changed to the idle state, the base station 100 transmits to the idle mobile station 200 an idle state identifier (DID), a paging cycle, a paging offset, and a paging group identifier (PGID), which are deregistration identifiers. The same idle state information is allocated (S120, S130). At this time, the already assigned M2M group identifier is maintained until the corresponding mobile station is removed from the group.

When group paging is performed for mobile stations included in a specific M2M group, the base station 100 selects a group identifier (MGID) for the M2M group to be group paging (S140).

In operation S150, a location, ie, a frame, to transmit a group paging message for the M2M group having the selected M2M group identifier (MGID) is determined. The base station selects a frame to transmit the group paging message in consideration of the total paging message load of the base station. The base station 100 generates a group paging indicator based on the determined frame (S160).

Thereafter, the base station 100 generates and transmits a paging group information message including a paging group identifier (PGID), a time domain hash parameter m, and a group paging indicator (S170. S180). The paging group information message may be transmitted in a broadcast manner.

The mobile station 200 receives the paging group information message, and the mobile station 200 extracts the group paging indicator included in the paging group information message. On the basis of the extracted group paging indicator, the presence or absence of group paging is checked, and the frame on which the group paging message is transmitted is checked (S190). The group paging message is monitored in the checked frame (S200), and the group paging message transmitted by the base station 100 is received in the corresponding frame (S210, S220). The M2M group identifier (MGID) assigned to the mobile station is included in the received group paging message (S220).

For example, as illustrated in the accompanying FIG. 4, when m = 4 and using a 1-bit group paging indicator, the base station includes a paging group including a group paging indicator having a value of m = 4 and “0”. Send an information message.

The mobile station, which has received the paging group information message, determines that the group paging message is transmitted in the first frame of the paging reception interval when the group paging indicator is 1 bit and its value is "0".

The group paging message is monitored and received in the first frame of the confirmed paging reception interval. On the other hand, the base station does not transmit the group paging message for each frame of the paging reception interval during group paging, but includes a group including information on all M2M groups requiring group paging in a predetermined frame (for example, the first frame of the frame reception interval). Send a paging message. Therefore, the group paging message transmission efficiency of the base station can be improved.

On the other hand, for example, as illustrated in the accompanying FIG. 5, when m = 4 and using a 1-bit group paging indicator, the base station includes a group paging indicator having a value of m = 4 and “1”. Paging group information message can be sent.

The mobile station receiving the paging group information message includes the identifier (MGID) for the group to which it belongs in the paging group information message, and if the group paging indicator is 1 bit and its value is "1", the group paging message is paging. Confirm that it is transmitted in the last frame of the reception interval.

The group paging message is monitored and received in the last frame of the confirmed paging reception interval. Meanwhile, the base station also transmits the group paging message in a predetermined frame (for example, the last frame of the frame reception interval) without transmitting the group paging message for each frame of the paging reception interval during group paging. Therefore, the group paging message transmission efficiency of the base station can be improved.

In the above example, the group paging indicator includes 1 bit. However, even when the group paging indicator includes 2 bits, the group paging message transmission and reception may be performed in the same manner as described above.

On the other hand, if the group paging indicator consists of two bits including the group paging presence indicator and the group paging location indicator, the mobile station determines that there is no group paging if the first bit, which is the group paging presence indicator, is "0". On the other hand, if the last bit, which is a group paging indicator, is "1", it is determined that there is group paging, and according to the value of the group paging location indicator, it checks the frame in which the group paging message is transmitted, Monitor.

6 is a block diagram showing the structure of a base station according to an embodiment of the present invention.

As shown in FIG. 6, the base station 100 according to an embodiment of the present invention includes an idle state information allocator 110, a group paging frame determiner 120, a paging group information transmitter 130, and paging transmissions. The unit 140 is included.

The idle state information allocator 110 allocates idle state information such as an idle state identifier (DID), a paging cycle, a paging offset, and a paging group identifier (PGID), which is a deregistration identifier, to the mobile station 200 in the idle state.

The group paging frame determiner 120 determines a frame to transmit a group paging message to the M2M group to be grouped in the paging reception interval, and generates a group paging indicator based on the determined frame.

The paging group information transmitter 130 generates a paging group information message including the group paging indicator and the parameter m and transmits the paging group information message to the mobile stations.

The paging transmitter 140 transmits a group paging message including an identifier (MGID) for the M2M group to be grouped, and in particular, transmits the group paging message in a frame corresponding to the group paging indicator during the paging reception period.

7 is a block diagram showing the structure of a mobile station according to an embodiment of the present invention.

As shown in FIG. 7, the mobile station 200 according to an embodiment of the present invention includes an idle state information receiver 210, a paging group information receiver 22, a group paging indicator checker 230, and a group paging receiver. 240.

The idle state information receiver 210 receives an idle state identifier (DID), a paging cycle, a paging offset, and a paging group identifier (PGID) from the base station 100.

The paging group information receiver 22 receives a paging group information message from the base station 100.

The group paging indicator confirming unit 230 extracts a group paging indicator from the received paging group information message and checks a frame in which the group paging message is transmitted in the paging reception interval based on the group paging indicator.

The group paging receiver 240 receives the group paging message by monitoring the identified frame according to the group paging indicator in the paging reception interval.

The embodiments of the present invention described above are not only implemented by the apparatus and method but may be implemented through a program for realizing the function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded, The embodiments can be easily implemented by those skilled in the art from the description of the embodiments described above.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

Claims (17)

In the group paging message transmission method of the base station,
Determining a frame to transmit a group paging message corresponding to a group of mobile stations to which group paging is to be performed;
Generating a group paging indicator including information on the determined frame;
Generating and sending a paging group information message including the group paging indicator to a mobile station; And
Transmitting a group paging message for the mobile station group in the determined frame during a paging reception interval including a plurality of frames
The group paging message transmission method comprising a. The method of claim 1, wherein
The determining of the frame may include determining a frame to transmit the group paging message among frames in which a paging message determined by a time domain hash parameter is transmitted in the paging reception interval. The method of claim 1, wherein
And the group paging indicator comprises one bit. The method of claim 3, wherein
When the group paging indicator is "0", it indicates that the group paging message is transmitted through the first frame of the paging reception interval, and when the group paging indicator is "1", the group paging message is transmitted to the base station during the paging reception interval. Indicating that the paging message is transmitted on the last frame among the frames transmitted. The method of claim 1, wherein
The group paging indicator is a group paging message transmission method according to the number of bits necessary to represent each frame according to the number of frames constituting the paging reception interval. The method of claim 5, wherein
If the group paging indicator is 2 bits and the value is "00", it indicates that the group paging message is transmitted through the first frame of the paging reception interval, and the group paging indicator is 2 bits and the value is "01". Indicates that the group paging message is transmitted through the second frame of the paging reception interval, and if the group paging indicator is 2 bits and the value is "10", the group paging message is transmitted through the third frame of the paging reception interval. If the group paging indicator is 2 bits and its value is '11', a group paging message is transmitted through a fourth frame of the paging reception interval. The method of claim 5, wherein
The group paging indicator includes a group paging presence indicator indicating the presence or absence of group paging and a group paging location indicator indicating the location information of the group paging message. A method for receiving a group paging message of a mobile station,
Receiving a group identifier assignment from a base station for a group to which the mobile station belongs;
Receiving from the base station a paging group information message comprising a group paging indicator;
Identifying a frame to which a group paging message is to be transmitted based on the group paging indicator; And
Monitoring the checked frame in a paging reception interval to receive a group paging message and checking a group identifier to which the mobile station belongs in the received paging message;
The group paging message receiving method comprising a. The method of claim 8, wherein
Receiving the group paging message
If the group paging indicator is "0", receiving a group paging message by monitoring a first frame among frames in which a paging message is transmitted during the paging reception interval; And
If the group paging indicator is "1", receiving a group paging message by monitoring a last frame among frames in which a paging message is transmitted during the paging reception interval;
The group paging message receiving method comprising a. The method of claim 8, wherein
Receiving the group paging message
If the group paging indicator consists of 2 bits and its value is "00", receiving a group paging message by monitoring a first frame of the paging reception interval;
If the group paging indicator consists of 2 bits and its value is "01", monitoring a second frame of the paging reception interval to receive a group paging message;
If the group paging indicator consists of 2 bits and its value is "10", monitoring a third frame of the paging reception interval to receive a group paging message; And
If the group paging indicator consists of 2 bits and its value is "11", monitoring a fourth frame of the paging reception interval and receiving a group paging message
The group paging message receiving method comprising a. The method of claim 8, wherein
Receiving the group paging message
When the group paging indicator includes a group paging presence indicator and a group paging location includes a group indicator,
And if the group paging presence indicator indicates group paging, monitor the frame indicated by the group paging location indicator to receive the group paging message. An idle state information allocator for allocating idle state information including an idle state identifier, a paging cycle, a paging offset, and a paging group identifier to an idle mobile station;
A group paging frame determination unit for determining a frame for transmitting a group paging message for a group of mobile stations and generating a group paging indicator based on the determined frame;
A paging group information transmitter for generating and sending a paging group information message including the group paging indicator to a mobile station; And
Paging transmitter for transmitting a group paging message in a frame corresponding to the group paging indicator of the paging receiving interval including a plurality of frames
Including, the base station. The method of claim 12, wherein
The group paging frame determiner determines a frame to transmit the group paging message among frames in which a paging message determined by a time domain hash parameter is transmitted in the paging reception interval,
And the paging group information transmitting unit transmits the time domain hash parameter by including the paging group information message. The method of claim 12, wherein
And the group paging frame determiner generates a group paging indicator including a group paging presence indicator indicating the presence of group paging and a group paging location indicator indicating location information of the group paging message according to the determined frame. An idle state information receiver configured to receive an idle state identifier, a paging cycle, a paging offset, and a paging group identifier from a base station;
A paging group information receiver for receiving a paging group information message including a group paging indicator from a base station;
A group paging indicator confirmation unit extracting a group paging indicator from the received paging group information message and confirming a frame in which a group paging message is transmitted based on the group paging indicator; And
A group paging receiver for receiving a group paging message by monitoring a frame identified according to the group paging indicator in a paging receiving interval including a plurality of frames and checking a group identifier to which the mobile station belongs in the received paging message.
Including a mobile station. The method of claim 15, wherein
The group paging receiver
When the group paging indicator is "0", a group paging message is received by monitoring a first frame among frames in which a paging message is transmitted during the paging reception interval,
And when the group paging indicator is "1", receiving a group paging message by monitoring a last frame among frames in which a paging message is transmitted during the paging reception interval. The method of claim 13, wherein
The group paging receiver
And if the group paging indicator includes a group paging presence indicator and a group paging location indicator, and if the group paging presence indicator indicates group paging, monitor the frame indicated by the group paging location indicator to receive the group paging message.

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