WO2011132934A2

WO2011132934A2 - Base station, mobile station, method for transmitting paging message, and method for receiving paging message

Info

Publication number: WO2011132934A2
Application number: PCT/KR2011/002832
Authority: WO
Inventors: 정수정; 김은경; 차재선; 장성철; 이현; 윤철식
Original assignee: 한국전자통신연구원
Priority date: 2010-04-20
Filing date: 2011-04-20
Publication date: 2011-10-27
Also published as: WO2011132934A3

Abstract

A base station allocates paging groups to a mobile station. The base station transmits a first message which includes information on indexes of a plurality of carriers and a plurality of carriers to the mobile station, and transmits, to the mobile station, a second message which includes paging group information indicating whether each of the plurality of carriers support each of one or more paging groups. The base station selects a paging transmission carrier for the mobile station among one or more paging carriers corresponding to the paging groups allocated to the mobile station, and transmits a paging message through said paging transmission carrier.

Description

Base station, mobile station, paging message transmission method, and paging message reception method

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

A paging group information message (PGID_Info message), which is a broadcast message, may be used to provide paging related information of a base station in a mobile communication system. The paging group information message may be sent on all carriers supported by the base station.

The paging group information message may include the fields shown in Table 1.

Table 1

Name	Value
Num_PGIDs	Number of Paging groups in the base station
PGID	Identifier of paging group (0 ~ 216)
m	Time domain hash parameter (1 ~ 4) used to determine the frame number of a superframe for paging message transmission of an idle mode AMS.

In Table 1, the Num_PGIDs field indicates the number of paging groups supported by the base station. The PGID field represents a paging group identifier. The paging group information message may include the number of paging group identifiers corresponding to the Num_PGIDs field. The m field represents a time domain hash parameter used by the mobile station to determine a frame number for paging message transmission among a plurality of frames in a superframe constituting a paging reception interval.

Meanwhile, the base station provides the mobile station with information necessary for multicarrier support through a global carrier configuration message (AAI_Global_Config message) and a multicarrier advertisement message (AAI_MC_ADV message).

The Global Carrier Placement Message is a message that provides information about all carriers that can be supported throughout the network to which the base station belongs. The number of carrier groups and the total number of carrier groups in the network, which consists of consecutive carriers located consecutively in the frequency band. Provides information about the individual carriers that make up the group. The carrier group information includes bandwidth and start frequency information of constituent carriers of each carrier group, and the individual carrier information includes information about a physical carrier index and a duplexing mode. The physical carrier index is for distinguishing between all carriers supported in the network to which the base station belongs. After the mobile station initially connects to the system via the base station, the base station sends a global carrier placement message to the mobile station. All base stations belonging to the same network provide the same global carrier placement message.

The multicarrier notification message provides information about multiple carriers that the base station can support. The multicarrier notification message uses a secondary carrier preamble index (SA-Preamble index) and MAC protocol version for each carrier supported by the base station using a physical carrier index provided through a global carrier configuration message. ), Super frame header (SFH) and the like.

In a mobile radio access system supporting multiple carriers, mobile stations in an idle mode in a base station can receive a paging message through different carriers for each mobile station. In addition, the base station may use only some of the carriers for paging message transmission among the multiple carriers supported by the base station.

In the dormant mode, in order for a mobile station to receive a paging message, it is necessary to provide information on carriers used for transmitting a paging message in a base station and information for determining a carrier on which the paging message of the mobile station is transmitted. The carrier used to transmit the paging message of the mobile station may be determined using a specific equation.

However, the current paging group information message, the global carrier placement message, and the multicarrier notification message do not provide paging related information of each carrier required for paging message transmission through multiple carriers.

An object of the present invention is to provide a method for efficiently notifying a mobile station of a related information when transmitting a paging message through multiple carriers and using the same to receive a paging message without loss.

According to an embodiment of the present invention, a method of transmitting a paging message of a base station includes transmitting a first message to a mobile station, the first message including indexes of a plurality of carriers and information for the plurality of carriers; Assigning a paging group to the mobile station; Sending a second message to the mobile station including paging group information indicating whether each of the plurality of carriers supports each of one or more paging groups; Selecting a paging transport carrier for the mobile station from one or more paging carriers corresponding to the paging group assigned to the mobile station; And transmitting the paging message on the paging transport carrier.

The selecting the paging transport carrier may include selecting the paging transport carrier based on the number of one or more paging carriers corresponding to the paging group assigned to the mobile station.

The second message may further include an identifier of the one or more paging groups.

When the one or more paging groups do not have the same paging carrier, the paging group information may be one or more bitmaps respectively corresponding to the one or more paging groups.

Each of the one or more bitmaps may indicate whether each of the plurality of carriers corresponds to a paging carrier used for transmission of the paging message for a corresponding paging group.

The first message corresponds to a unicast message for providing information of all available carriers in the network, and the size of each of the one or more bitmaps may be equal to the number of all available carriers.

When the one or more paging groups have the same paging carrier, the paging group information may be one bitmap.

The one bitmap may indicate whether each of the plurality of carriers corresponds to a paging carrier used to transmit the paging message for the one or more paging groups.

The paging group information includes a paging carrier indication bitmap indicating whether each of the plurality of carriers corresponds to a paging carrier, and one or more paging group supporting bitmaps corresponding to the one or more paging groups, respectively. May indicate whether each of the one or more paging carriers represented by the paging carrier indication bitmap supports the corresponding paging group.

According to an embodiment of the present invention, a method for receiving a paging message of a mobile station includes: receiving a first message from a base station, the first message including indexes of a plurality of carriers and information for the plurality of carriers; Receiving an allocation of a paging group from the base station; Receiving a second message from the base station, the second message including paging group information indicating whether each of the plurality of carriers supports each of one or more paging groups; Selecting a paging transport carrier for the mobile station from one or more paging carriers corresponding to the paging group assigned to the mobile station; And monitoring the paging message on the paging transport carrier.

The second message further includes an identifier of the one or more paging groups, and if the one or more paging groups do not have the same paging carrier, the paging group information is one or more bitmaps respectively corresponding to the one or more paging groups. Each of the one or more bitmaps may indicate whether each of the plurality of carriers corresponds to a paging carrier used for transmission of the paging message for a corresponding paging group.

The second message further includes an identifier of the one or more paging groups, when the one or more paging groups have the same paging carrier, the paging group information is one bitmap, and the one bitmap is the plurality of bitmaps. Each carrier may indicate whether the carrier corresponds to a paging carrier used to transmit the paging message for the one or more paging groups.

The second message further includes an identifier of the one or more paging groups, wherein the paging group information corresponds to a paging carrier indication bitmap indicating whether each of the plurality of carriers corresponds to a paging carrier, and corresponding to the one or more paging groups, respectively. One or more paging group support bitmaps, wherein the paging group support bitmaps may indicate whether each of the one or more paging carriers represented by the paging carrier indication bitmap supports a corresponding paging group.

According to another embodiment of the present invention, a method of transmitting a paging message of a base station includes: transmitting a control message including paging group information indicating whether each of a plurality of carriers supports each of one or more paging groups; Assigning a paging group to the mobile station; Selecting a paging transport carrier for the mobile station from one or more paging carriers corresponding to the paging group assigned to the mobile station; And transmitting the paging message on the paging transport carrier.

The paging group information may include an index of a plurality of carriers, the number of one or more paging groups supported by the plurality of carriers, and an identifier of the one or more paging groups.

The control message may correspond to a broadcast message providing paging group information.

The plurality of carriers may correspond to carriers supported by the base station, and the control message may correspond to a broadcast message for providing carrier information of the base station.

The first message may correspond to a message for providing information of neighboring base stations.

The paging group information may include an identifier of the one or more paging groups and an identifier of one or more paging carriers supporting each of the one or more paging groups.

In another embodiment of the present invention, a method for receiving a paging message of a mobile station includes a control message including an index of a plurality of carriers, the number of one or more paging groups supported by the plurality of carriers, and an identifier of the one or more paging groups. Receiving from the base station; Receiving an allocation of a paging group from the base station; Selecting a paging transport carrier for the mobile station from one or more paging carriers corresponding to the paging group assigned to the mobile station; And monitoring the paging message on the paging transport carrier.

According to an embodiment of the present invention, when a paging message is transmitted through multiple carriers, the mobile station can efficiently inform the mobile station of the related information and can use the same to receive the paging message without loss.

1 shows a paging method according to a first embodiment of the present invention.

2 shows a paging method according to a second embodiment of the present invention.

3 shows a method of interpreting a bitmap included in a first example of a paging group information message according to a second embodiment of the present invention.

4 shows a method of interpreting a bitmap included in a second example of a paging group information message according to the second embodiment of the present invention.

5 shows another method of interpreting a bitmap included in a second example of a paging group information message according to the second embodiment of the present invention.

6 shows a paging method according to a third embodiment of the present invention.

7 shows a paging method according to a fourth embodiment of the present invention.

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

9 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. 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, 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 the present specification, a base station (BS) is an access point (AP), a radio access station (Radio Access Station, RAS), a Node B (Node B), a base transceiver station (Base Transceiver Station, BTS), MMR ( Mobile Multihop Relay) -BS and the like, and may include all or part of functions such as 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 paging message reception method according to various embodiments of the present disclosure will be described with reference to the accompanying drawings.

For paging through multiple carriers, the base station needs to transmit the parameters shown in Table 2 to the mobile station through a paging group information message, a global carrier placement message, a multicarrier notification message, and the like.

TABLE 2

parameter	Explanation
paging carrier indicator	Indicator indicating whether each carrier supported by the base station supports paging message transmission
physical carrier index	Identifier information of each carrier used for paging message transmission
paging group information	Paging group information supported by each carrier of the base station
N	Total number of carriers the base station uses to send paging messages
PG_uniformity flag	Same Paging Group Support Indicator

The following describes a paging message transmission method and a paging message reception method according to a first embodiment of the present invention with reference to FIG.

According to the embodiment of Figure 1, the base station transmits information for paging on multiple carriers to the mobile station using a paging group information message.

First, the base station determines one or more paging carriers used to transmit a paging message for each of the one or more paging groups (S101).

The base station generates a paging group information message including information about the paging carrier to inform the mobile station of the index of one or more paging carriers for each of the one or more paging groups (S103).

Table 3 shows the fields included in the first example of the paging group information message according to the first embodiment of the present invention.

TABLE 3

Name	Value
Num_PGIDs	Number of Paging groups in the ABS
m	Time domain hash parameter (1 ~ 4) used to determine the frame number of a superframe for paging message transmission of an idle mode AMS.
For (i = 0; i <Num_PGIDs; i ++) {	Present if Num_PGIDs> 0
PGID	Identifier of paging group (0 ~ 216)
Num_carrier_PG
For (j = 0; j <Num_carrier_PG) {
Physical carrier index (s)	Identifier (s) of carrier used to transmit paging message for each PG
}
}

As shown in Table 3, the first example of the paging group information message according to the first embodiment of the present invention is the number of paging groups field (Num_PGIDs), the time domain hash parameter field (m), the paging group of each paging group An identifier (PGID), a number field of paging carriers belonging to each paging group (Num_carrier_PG), and a physical carrier index (s) of one or more paging carriers belonging to each paging group are included. The Num_carrier_PG field corresponds to the parameter N.

Table 4 shows the fields included in the second example of the paging group information message according to the first embodiment of the present invention.

Table 4

Name	Value
m	Time domain hash parameter (1 ~ 4) used to determine the frame number of a superframe for paging message transmission of an idle mode AMS.
Num_pg_carrier	Number of carrier used to transmit paging message
PG_uniformity flag	1: All carriers supported by serving ABS have the same paging group 0: otherwise
For (i = 0; i <Num_PG_carrier; i ++) {	Present if Num_PG_carrier> 0
Physical carrier index
Num_PGIDs	Number of Paging groups in a carrier
For (j = 0; j <Num_PGID) {	Present if Num_PGIDs> 0If PG_uniformity flag = 1, this information is provided only once
PGID	Identifier of paging group (0 ~ 216)
}
}

As shown in Table 4, the second example of the paging group information message according to the first embodiment of the present invention includes a time domain hash parameter field (m), a number of paging carriers field (Num_PG_carrier), and a paging group uniformity flag ( PG_uniformity flag), a physical carrier index of each paging carrier, a number field of paging groups to which each paging carrier belongs (Num_PGIDs), and an identifier (PGID) of one or more paging groups to which each paging carrier belongs.

In particular, when the paging group supported by the base station is the same, the paging group uniformity flag (PG_uniformity flag) is set to 1, the information about the identifier (PGID) of one or more paging group to which each paging carrier belongs to be provided only once. Can be.

Through analysis of the second example of the paging group information message according to the first embodiment of the present invention, the total number N of paging carriers belonging to each paging group may be determined.

The base station transmits the generated paging group information message to the mobile station through all carriers supported by the base station in a broadcast transmission method (S105).

Meanwhile, the base station allocates a deregistration identifier (DID) and a paging group identifier to the mobile station entering the dormant mode (S107).

The mobile station identifies one or more paging carrier indexes for the paging group to which it belongs through the paging group information message (S108).

The mobile station determines the total number N of paging carriers of the paging group to which it belongs through the paging group information message (S109).

The mobile station selects one of the one or more paging carrier indices belonging to its paging group as the paging transport carrier by using the parameter N and the predetermined equation (S111). The mobile station may use Equation 1 below.

Equation 1

According to Equation 1, the mobile station obtains the remainder r obtained by dividing the DID by N, and selects the r-th paging carrier index among the one or more paging carrier indexes belonging to its paging group as the paging transport carrier.

The mobile station monitors the paging message through the paging transport carrier (S113).

Thereafter, the base station selects a paging transmission carrier for the mobile station from the one or more paging carriers for the paging group to which the mobile station belongs using a predetermined equation (S115). The base station may also use Equation 1.

The base station transmits the paging message to the mobile station through a broadcast transmission method through the selected paging transmission carrier (S117).

Next, a paging message transmission method and a paging message reception method according to a second embodiment of the present invention will be described with reference to FIGS. 2 to 5.

According to the embodiment of Figure 2, the base station transmits information for paging over multiple carriers to the mobile station using the global carrier placement message and the paging group information message. After receiving the paging group information message, the mobile station in the sleep mode identifies the paging carriers of each base station using the information of the global carrier configuration message received before the change to the sleep mode, and identifies the carrier to which the paging message for the mobile station is transmitted. You can decide.

First, the base station generates a global carrier assignment message for notifying the mobile station of the physical carrier indexes of all available carriers in the network to which the base station belongs (S201), and transmits to the mobile station by unicast transmission (S203). The mobile station may receive the global carrier placement message before changing to idle mode. Table 5 shows fields included in the global carrier placement message according to the second embodiment of the present invention.

Table 5

Field	Size (bit)	Description
MAC Control Message Type	8
Number of Carrier Groups	4	Groups of contiguous carriers
For (i = 0; i <Number of Carrier Groups; i ++) {
Multi-Carrier Configuration Index Across the Network	6
Start Frequency Assignment Index	6	Frequency Assignment Index of the first carrier in carrier group #i
Number of Carriers	6
For (j = 0; j <Number of Carriers; j ++) {
Physical Carrier Index	6
Duplexing Mode	One	"0" for TDD "1" for FDD
}
}

As shown in Table 5, the global carrier configuration message according to the second embodiment of the present invention includes a MAC control message type field, a carrier group number field, a multicarrier deployment index field of each carrier group, and a start frequency allocation of each carrier group. An index field, a carrier number field of each carrier group, physical carrier indexes belonging to each carrier group, and a duplexing mode field of each physical carrier index.

The base station determines one or more paging carriers used to transmit a paging message for each of the one or more paging groups (S205).

The base station generates a paging group information message including information about the paging carrier to inform the mobile station of the index of one or more paging carriers for each of the one or more paging groups (S207).

Table 6 shows the fields included in the first example of the paging group information message according to the second embodiment of the present invention.

Table 6

Name	Value
Num_PGIDs	Number of Paging groups in the ABS
m	Time domain hash parameter (1 ~ 4) used to determine the frame number of a superframe for paging message transmission of an idle mode AMS.
PG_uniformity flag	1: All carriers supported by serving ABS have the same paging group 0: otherwise
For (i = 0; i <Num_PGIDs; i ++) {
PGID	Identifier of paging group (0 ~ 216)
}
For (i = 0; i <Num_PGIDs; i ++) {
Paging carrier indication bits	This bitmap is used to specify if carriers support specific paging group (PG) in the ABS or not.Multiple paging carrier indication bits are provided and each paging carrier indication bits corresponds to each PG.If PG_uniformity flag is set, only one paging carrier indication The value N per PG used to determine the paging carrier index is equal to the number of bits set to 1 in each paging carrier indication bits
}

As shown in Table 6, the first example of the paging group information message according to the second embodiment of the present invention is the number of paging groups field (Num_PGIDs), time domain hash parameter field (m), paging group uniformity flag ( PG_uniformity flag), a paging group identifier (PGID) of each paging group, and a paging carrier indication bitmap for each paging group.

If the paging group supported by the base station is the same, the paging group uniformity flag (PG_uniformity flag) is set to 1, and the paging carrier indication bitmap for each paging group may be provided only once.

The base station transmits the index of the paging carrier to the mobile station through a bitmap corresponding to the paging carrier indication bits field.

The following describes how to interpret this bitmap with reference to FIG.

As shown in FIG. 3, the length of the paging carrier indication bitmap for each paging group is equal to the number of carriers in the global carrier placement message. The kth bitmap of the paging group information message corresponds to the kth PGID of the paging group information message. The i th bit of each bitmap corresponds to the physical carrier index of the i th carrier in the global carrier configuration message (AAI_Global_Config message). That is, the i-th bit set to 1 indicates that the paging message of the base station may be transmitted through the i-th carrier in the global carrier configuration message (AAI_Global_Config message). In this case, the number of bits indicated by 1 in the k-th bitmap corresponds to N, which is the total number of carriers used by the base station to transmit paging messages for the k-th PGID.

Table 7 shows fields included in a second example of a paging group information message according to the second embodiment of the present invention.

TABLE 7

Name	Value
Num_PGIDs	Number of Paging groups in the ABS
m	Time domain hash parameter (1 ~ 4) used to determine the frame number of a superframe for paging message transmission of an idle mode AMS.
PG_uniformity flag	1: All carriers supported by serving ABS have the same paging group 0: otherwise
For (i = 0; i <Num_PGIDs; i ++) {
PGID	Identifier of paging group (0 ~ 216)
}
Paging carrier indication bits	This bitmap is used to specify if carriers are a paging carrier in the ABS or not.The size of paging carrier indication bitmap equals to the number of carriers in the AAI_Global-Config message.The physical carrier index of each bit in bitmap corresponds to the ascending order of physical carrier index of the carriers in the AAI_Global-Config message.
For (i = 0; i <Num_PGIDs; i ++) {
PG_bits	This bitmap is used to specify if carriers support specific paging group in the ABS or not.Multiple PG_bits are provided and each PG_bits corresponds to each PGIf PG_uniformity flag is set, only one PG_bits is provided.The size of PG_bits equals to the number of bits set to 1 in the paging carrier indication bitsThe value N for each PG used to determine the paging carrier index is equal to the number of bits set to 1 in each PG_bits (or is fixed to Max. number of carrier in an ABS).
}

As shown in Table 7, the second example of the paging group information message according to the second embodiment of the present invention includes the number field of paging groups (Num_PGIDs), the time domain hash parameter field (m), and the paging group uniformity flag ( PG_uniformity flag), a paging group identifier (PGID) of each paging group, a paging carrier indication bitmap, and a paging group support bitmap (PG_bits) for each paging group.

If the paging group supported by the base station is the same, the paging group uniformity flag (PG_uniformity flag) is set to 1, the paging carrier indication bitmap (PG_bits) of each paging group may be provided only once.

The base station transmits the index of the paging carrier to the mobile station through a bitmap corresponding to the paging carrier indication bits field and a bitmap corresponding to the PG_bits field.

Next, a method of analyzing this bitmap will be described with reference to FIGS. 4 and 5.

The length of the paging carrier indication bits is equal to the number of carriers in the global carrier placement message. Paging carrier indication bits indicate a paging carrier index used by the base station to transmit a paging message. That is, the i th bit of the paging carrier indication bitmap corresponds to the physical carrier index of the i th carrier in the global carrier configuration message (AAI_Global_Config message).

The length of each paging group support bitmap (PG_bits) is equal to the number of bits set to 1 in the paging carrier indication bits of the base station. The k th paging group support bitmap (PG_bits) of the paging group information message corresponds to the k th PGID of the paging group information message. That is, the k-th paging group support bitmap (PG_bits) indicates a paging carrier index used to transmit a paging message for the k-th PGID. The j th bit of each paging group support bitmap (PG_bits) represents a physical carrier index corresponding to the j th bit among bits set to 1 in the paging carrier indication bitmap.

That is, the j th bit set to 1 in the k th paging group support bitmap indicates that a paging message of the base station may be transmitted through a carrier corresponding to the j th bit among the bits set to 1 in the paging carrier indication bitmap. . In this case, the number of bits indicated by 1 in the k-th paging group support bitmap corresponds to N, which is the total number of carriers used by the base station to transmit paging messages for the k-th PGID.

The length of each paging group support bitmap (PG_bits) is fixed to the maximum size that the base station can provide. The k th paging group support bitmap (PG_bits) of the paging group information message corresponds to the k th PGID of the paging group information message. That is, the k-th paging group support bitmap (PG_bits) indicates a paging carrier index used to transmit a paging message for the k-th PGID. The j th bit of each paging group support bitmap (PG_bits) represents a physical carrier index corresponding to the j th bit among bits set to 1 in the paging carrier indication bitmap.

2 will be described again.

The base station transmits the generated paging group information message to the mobile station in a broadcast manner (S209).

Meanwhile, the base station assigns a deregistration identifier (DID) and a paging group identifier to the mobile station entering the dormant mode (S211).

The mobile station determines one or more paging carrier indexes for the paging group to which it belongs through the global carrier placement message and the paging group information message (S212).

The mobile station determines the total number N of paging carriers of the paging group to which it belongs through the paging group information message (S213).

The mobile station selects one of one or more paging carrier indexes belonging to its paging group by using the parameter N and the predetermined equation (S215). The mobile station may use equation (1). According to Equation 1, the mobile station obtains the remainder r obtained by dividing the DID by N, and selects the r-th paging carrier index among the one or more paging carrier indexes belonging to its paging group as the paging transport carrier.

The mobile station monitors the paging message through the paging transport carrier corresponding to the selected paging carrier index (S217).

Thereafter, the base station selects a paging transmission carrier for the mobile station from among one or more paging carriers for the paging group to which the mobile station belongs using a predetermined equation (S219). The base station may also use Equation 1.

The base station transmits the paging message to the mobile station through a broadcast transmission method through the selected paging transmission carrier (S221).

Next, a paging message transmission method and a paging message reception method according to a third embodiment of the present invention will be described with reference to FIG.

According to the embodiment of FIG. 6, the base station transmits information for paging on multiple carriers to the mobile station using the multicarrier notification message.

First, the base station determines one or more paging carriers used to transmit a paging message for each of the one or more paging groups (S301).

The base station generates a multicarrier notification message (S303) to notify the mobile station of the physical carrier index of supporting carriers and the index of one or more paging carriers for each of the one or more paging groups (S303), and transmits to the mobile station in a broadcast transmission manner ( S305). The mobile station receives a multicarrier notification message before changing to idle mode. On the other hand, when the mobile station in the dormant mode does not receive the multicarrier notification message, the mobile station may perform a separate procedure for requesting the corresponding information from the base station. Table 8 shows fields included in the multicarrier notification message according to the third embodiment of the present invention.

Table 8

Field	Size (bit)	Description
Multi-carrier Configuration change count	4	Incremented by 1 upon each update
Serving BS Carrier Number	3
Serving BS Uniformity Flag	One	0: All Carriers supported by serving ABS have the same protocol version, SFH_Info1: Other wise
Physical carrier index of current carrier	6	The carrier that ABS broadcast this message; the physical carrier index refers to AAI_Global-Config message
MAC protocol version	8	Consistent with REV.2 definition, with new MAC protocol version 9 defined for 16m
Paging carrier indication bit	One	This bit is used to specify if a carrier is a paging carrier or not.1: the corresponding carrier is paging carrier
Num_PGIDs	2	Number of Paging groups in the current carrier
For (j = 0; j <Num_PGIDs; j ++) {
PGID	16	Identifier of paging groupPresent if Num_PGIDs> 0
}
PG_uniformity flag	One	1: All carriers supported by serving ABS have the same paging group 0: otherwise
For (i = 1; i <= Serving BS Carrier Number-1; i ++) {
Physical carrier index	6	// physical carrier index in AAI_Global-Config message
SA-Preamble Index	10
Paging carrier Indication bit	One	This bit is used to specify if a carrier is a paging carrier or not.1: the corresponding carrier is paging carrier
If (PG_uniformity_flag == 0) {
Num_PGIDs	2	Number of Paging groups in the carrier
For (j = 0; j <Num_PGIDs; j ++) {
PGID	16	Identifier of paging groupPresent if Num_PGIDs> 0
}
}
SFH information
}

As shown in Table 8, the multicarrier notification message according to the third embodiment of the present invention includes a multi-carrier configuration change count field, a serving base station carrier number field, and a serving BS carrier number field. Serving BS Uniformity Flag, Physical Carrier Index of Current Carrier, MAC Protocol Version, Paging Carrier Indication Bit of Current Carrier, Paging group number field supported by the current carrier (Num_PGIDs), a paging group identifier of one or more paging groups supported by the current carrier, a paging group uniformity flag (PG_uniformity flag), a physical carrier index of each serving base station carrier other than the current carrier, Secondary advanced preamble index (SA-Preamble index) of each serving base station carrier other than the current carrier, Paging carrier indication field of each serving base station carrier other than carrier, paging group number field supported by each serving base station carrier other than current carrier, paging group identifier of at least one paging group supported by each serving base station carrier other than current carrier, super It includes a frame header information field (SFH information).

A paging carrier indication field set to 1 indicates that a paging message can be transmitted on the associated serving base station carrier.

In Table 8, the number of carriers N used for paging message transmission for each paging group corresponds to the total number of carriers supporting the paging group in the multicarrier notification message.

If the paging group supported by the base station is the same, the paging group uniformity flag (PG_uniformity flag) is set to 1, the number of paging group number fields (Num_PGIDs) supported by the current carrier and one or more paging groups supported by the current carrier Although a paging group identifier is provided, a paging group number field supported by each serving base station carrier other than the current carrier and a paging group identifier of one or more paging groups supported by each serving base station carrier other than the current carrier may not be provided.

On the other hand, the base station allocates a deregistration identifier (DID) and a paging group identifier to the mobile station entering the sleep mode (S307).

The mobile station identifies one or more paging carrier indexes for the paging group to which it belongs through the multicarrier notification message (S309).

The mobile station determines the total number N of paging carriers of the paging group to which it belongs through the multicarrier notification message (S311).

The mobile station selects one of one or more paging carrier indexes belonging to its paging group by using the parameter N and the predetermined equation (S313). The mobile station may use equation (1). According to Equation 1, the mobile station obtains the remainder r obtained by dividing the DID by N, and selects the r-th paging carrier index among the one or more paging carrier indexes belonging to its paging group as the paging transport carrier.

The mobile station monitors the paging message through the paging transport carrier corresponding to the selected paging carrier index (S315).

Thereafter, the base station selects a paging transmission carrier for the mobile station from among one or more paging carriers for the paging group to which the mobile station belongs using a predetermined equation (S317). The base station may also use Equation 1.

The base station transmits the paging message to the mobile station through a broadcast transmission method through the selected paging transmission carrier (S319).

Next, a paging message transmission method and a paging message reception method according to a fourth embodiment of the present invention will be described with reference to FIG. 7.

According to the embodiment of FIG. 7, the base station transmits information for paging over multiple carriers to the mobile station using a neighbor advertisement message (AAI_NBR-ADV message).

First, the base station determines one or more paging carriers used to transmit a paging message for each of the one or more paging groups (S401).

The base station generates a neighbor base station information notification message to inform the mobile station of the information of the neighbor base stations and the indexes of one or more paging carriers used to transmit paging messages for each of the one or more paging groups (S403). The mobile station transmits to the mobile station in the unicast transmission method (S405). The mobile station receives the neighbor base station information notification message before changing to the idle mode. On the other hand, if the mobile station in the dormant mode does not receive the neighbor base station information notification message, the mobile station may perform a separate procedure for requesting the relevant information from the base station.

Table 9 shows fields included in the neighbor base station information notification message according to the fourth embodiment of the present invention.

Table 9

syntax	size	Note
AAI_NBR-ADV_Message_format () {	…	…
Management Message Type = NN	8
Change count	3
Cell type	3
Total Number of AAI_NBR-ADV segments	4
AAI_NBR-ADV Segment Index	4
BS number M	8
Starting ABS index	8
For (i = 0; i <M; i ++) {
BSID	48
Number of carriers (NC)
For (j = 0; j <Nc; j ++) {
SA-PREAMBLE index	10
A-PREAMBLE transmit power	8
Physical carrier index	6	Refer to the physical carrier index in AAI_Global-Config message
MAC protocol versions	8	MAC protocol version of the BS consistent with REV.2 definition, with new MAC protocol version 9 defined for 16m
Paging carrier indication	One	This bit is used to specify if a carrier is a paging carrier or not.1: the corresponding carrier is paging carrier
Num_PGIDs	2	Number of Paging groups in the carrier
For (k = 0; k <Num_PGIDs; k ++) {
PGID	16	Identifier of paging groupPresent if Num_PGIDs> 0
}
…	…	…

As shown in Table 9, the neighbor base station information notification message according to the fourth embodiment of the present invention includes a management message type field, a change count field, a cell type field, a total number field of message segments, a segment index field, and a base station number field. , Start base station index field, base station identifier field of each base station, number of carriers of each base station, SA-PREAMBLE index field for each carrier of each base station, preamble transmit power for each carrier of each base station (A-PREAMBLE transmit power) Field, physical carrier index field for each carrier of each base station, MAC protocol version field for each carrier of each base station, paging carrier indication field for each carrier of each base station, the number of paging groups supported by each carrier of each base station A paging group of one or more paging groups supported by each carrier of each base station It includes those stars.

A paging carrier indication field set to 1 indicates that a paging message may be transmitted on a carrier corresponding to an associated physical carrier index.

In Table 9, the number of carriers N used for paging message transmission for each paging group corresponds to the total number of carriers supporting the paging group in association with the base station in the neighbor base station information notification message.

On the other hand, the base station allocates a deregistration identifier (DID) and a paging group identifier to the mobile station entering the dormant mode (S407).

The mobile station uses the base station identifier field in the neighbor base station information notification message to determine one or more paging carrier indexes for the paging group to which it belongs in relation to the base station to which it belongs (S409).

The mobile station uses the base station identifier field in the neighbor base station information notification message to determine the total number N of paging carriers of the paging group to which it belongs in relation to the base station to which it belongs (S411).

The mobile station selects one of the one or more paging carrier indices supporting the paging group to which it belongs using the parameter N and the predetermined equation (S413). The mobile station may use equation (1). According to Equation 1, the mobile station obtains the remainder r obtained by dividing the DID by N, and selects the r-th paging carrier index among the one or more paging carrier indexes supporting the paging group to which it belongs, as the paging transport carrier.

The mobile station monitors the paging message through the paging transport carrier corresponding to the selected paging carrier index (S415).

Thereafter, the base station selects a paging transmission carrier for the mobile station from the one or more paging carriers for the paging group to which the mobile station belongs using a predetermined equation (S417). The base station may also use Equation 1.

The base station transmits the paging message to the mobile station through a broadcast transmission method through the selected paging transmission carrier (S419).

In the idle mode, the mobile station receives a paging group information message through one carrier and, if the carrier does not support paging, informs the base station that paging carrier related information is needed through a location update procedure. You may receive the necessary information. At this point, the message for location update includes a paging carrier index request, and when the paging carrier index request field is set, it indicates that the mobile station requests to provide information about the paging carrier.

In addition to the above-mentioned embodiments, it is also possible for the base station to determine the paging transport carrier and inform the mobile station to enter the idle mode.

Next, a structure of a base station 100 and a mobile station 200 according to an embodiment of the present invention will be described with reference to FIGS. 8 and 9.

As shown in FIG. 8, the base station 100 according to an embodiment of the present invention may include a paging carrier determiner 101, a paging group information message generator 103, a paging group information message transmitter 105, and a global carrier. The batch message generating unit 107, the global carrier batch message transmitting unit 109, the multicarrier notification message generating unit 111, the multicarrier notification message transmitting unit 113, the neighbor base station information notification message generating unit 115, and the surroundings A base station information notification message transmitter 117, a paging transport carrier selector 119, a paging message generator 121, and a paging message transmitter 123.

The paging carrier determiner 101 determines one or more paging carriers used to transmit a paging message for each of the one or more paging groups.

The paging group information message generator 103 generates a paging group information message. In this case, the paging group information message may include information for notifying the mobile station 100 of an index of a paging carrier supporting each of the one or more paging groups.

The paging group information message transmitter 105 transmits the paging group information message to the mobile station 200 through a broadcast transmission method.

The global carrier placement message generator 107 generates a global carrier placement message.

The global carrier configuration message transmitter 109 transmits the global carrier configuration message to the mobile station 200 in a unicast transmission method.

The multicarrier notification message generating unit 111 generates a multicarrier notification message. In this case, the multicarrier notification message may include information for notifying the mobile station 100 of an index of a paging carrier supporting each of the one or more paging groups.

The multicarrier notification message transmitter 113 transmits the multicarrier notification message to the mobile station 200 in a broadcast transmission manner.

The neighbor base station information notification message generator 115 generates a neighbor base station information notification message. In this case, the neighbor base station information notification message may include information for notifying the mobile station 100 of the index of the paging carrier supporting each of the one or more paging groups.

The neighbor base station information notification message transmitter 117 transmits the neighbor base station information notification message to the mobile station 200 in a unicast transmission method or a broadcast transmission method.

The paging transport carrier selector 119 selects a paging transport carrier for the mobile station 200 from among the plurality of paging carriers.

The paging message generator 121 generates a paging message.

The paging message transmitter 123 transmits the paging message to the mobile station 200 through a broadcast transmission method through the selected paging transmission carrier.

As shown in FIG. 9, the mobile station 200 according to an embodiment of the present invention includes a paging group information message receiver 201, a global carrier assignment message receiver 203, a multicarrier notification message receiver 205, and neighbor base station information. A notification message receiver 207, a paging carrier checker 209, a paging transport carrier selector 211, and a paging message receiver 213.

The paging group information message receiving unit 201 receives a paging group information message.

The global carrier configuration message receiver 203 receives the global carrier configuration message.

The multicarrier notification message receiving unit 205 receives a multicarrier notification message.

The neighbor base station information notification message receiving unit 207 receives the neighbor base station information notification message.

The paging carrier checking unit 209 uses the information in the paging group information message, the global carrier placement message, the multicarrier notification message, and the neighbor base station information notification message, and the total number N of one or more paging carriers supporting the paging group to which the paging carrier belongs. Check the index.

The paging transport carrier selector 211 selects a paging transport carrier for itself from one or more paging carriers supporting the paging group to which it belongs.

The paging message receiver 213 receives a paging message through the paging transport carrier while monitoring the paging transport carrier.

The embodiments of the present invention described above are not implemented only through the apparatus and the method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded. Implementation may be easily 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 those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

Claims

In the paging message transmission method of the base station,

Sending a first message to a mobile station, the first message comprising an index of a plurality of carriers and information for the plurality of carriers;

Assigning a paging group to the mobile station;

Sending a second message to the mobile station including paging group information indicating whether each of the plurality of carriers supports each of one or more paging groups;

Selecting a paging transport carrier for the mobile station from one or more paging carriers corresponding to the paging group assigned to the mobile station; And

Transmitting the paging message via the paging transport carrier.
The method of claim 1,

Selecting the paging transport carrier,

Selecting the paging transport carrier based on the number of one or more paging carriers corresponding to the paging group assigned to the mobile station.
The method of claim 2,

And the second message further comprises an identifier of the one or more paging groups.
The method of claim 3,

If the one or more paging groups do not have the same paging carrier, the paging group information is one or more bitmaps corresponding to the one or more paging groups, respectively.
The method of claim 4, wherein

And each of the one or more bitmaps indicates whether each of the plurality of carriers corresponds to a paging carrier used for transmission of the paging message for a corresponding paging group.
The method of claim 5,

The first message corresponds to a unicast message for providing information of all available carriers in the network,

And the size of each of the one or more bitmaps is equal to the number of all available carriers.
The method of claim 3,

If the one or more paging groups have the same paging carrier, the paging group information is one bitmap.
The method of claim 7, wherein

Wherein the one bitmap indicates whether each of the plurality of carriers corresponds to a paging carrier used for transmission of the paging message for the one or more paging groups.
The method of claim 3,

The paging group information is

A paging carrier indication bitmap indicating whether each of the plurality of carriers corresponds to a paging carrier;

One or more paging group support bitmaps corresponding to the one or more paging groups, respectively;

And the paging group support bitmap indicates whether each of the one or more paging carriers indicated by the paging carrier indication bitmap supports the corresponding paging group.
A method for receiving a paging message of a mobile station,

Receiving a first message from a base station comprising an index of a plurality of carriers and information for the plurality of carriers;

Receiving an allocation of a paging group from the base station;

Receiving a second message from the base station, the second message including paging group information indicating whether each of the plurality of carriers supports each of one or more paging groups;

Selecting a paging transport carrier for the mobile station from one or more paging carriers corresponding to the paging group assigned to the mobile station; And

Monitoring the paging message via the paging transport carrier.
The method of claim 10,

Selecting the paging transport carrier,

Selecting the paging transport carrier based on the number of one or more paging carriers corresponding to the paging group assigned to the mobile station.
The method of claim 11,

The second message further includes an identifier of the one or more paging groups,

When the one or more paging groups do not have the same paging carrier, the paging group information is one or more bitmaps respectively corresponding to the one or more paging groups,

And each of the one or more bitmaps indicates whether each of the plurality of carriers corresponds to a paging carrier used for transmission of the paging message for a corresponding paging group.
The method of claim 12,

The first message corresponds to a unicast message for providing information of all available carriers in the network,

And the size of each of the one or more bitmaps is equal to the number of all available carriers.
The method of claim 11,

The second message further includes an identifier of the one or more paging groups,

If the one or more paging groups have the same paging carrier, the paging group information is one bitmap,

Wherein the one bitmap indicates whether each of the plurality of carriers corresponds to a paging carrier used for transmission of the paging message for the one or more paging groups.
The method of claim 11,

The second message further includes an identifier of the one or more paging groups,

The paging group information is

A paging carrier indication bitmap indicating whether each of the plurality of carriers corresponds to a paging carrier;

One or more paging group support bitmaps corresponding to the one or more paging groups, respectively;

And the paging group support bitmap indicates whether each of the one or more paging carriers indicated by the paging carrier indication bitmap supports a corresponding paging group.
In the paging message transmission method of the base station,

Sending a control message to the mobile station, the control message comprising paging group information indicating whether each of the plurality of carriers supports each of the one or more paging groups;

Assigning a paging group to the mobile station;

Selecting a paging transport carrier for the mobile station from one or more paging carriers corresponding to the paging group assigned to the mobile station; And

Transmitting the paging message via the paging transport carrier.
The method of claim 16,

Selecting the paging transport carrier,

Selecting the paging transport carrier based on the number of one or more paging carriers corresponding to the paging group assigned to the mobile station.
The method of claim 17,

The paging group information is

Indexes of multiple carriers,

The number of one or more paging groups supported by the plurality of carriers,

Paging message transmission method comprising an identifier of the one or more paging groups.
The method of claim 18,

And the control message corresponds to a broadcast message providing paging group information.
The method of claim 18,

The plurality of carriers correspond to carriers supported by the base station,

The control message is a paging message transmission method corresponding to a broadcast message for providing carrier information of the base station.
The method of claim 18,

The first message corresponds to a message for providing information of a neighbor base station.
The method of claim 17,

The paging group information is

An identifier of the one or more paging groups,

And an identifier of one or more paging carriers supporting each of the one or more paging groups.
A method for receiving a paging message of a mobile station,

Receiving a control message from a base station including an index of a plurality of carriers, the number of one or more paging groups supported by the plurality of carriers, and an identifier of the one or more paging groups;

Receiving an allocation of a paging group from the base station;

Selecting a paging transport carrier for the mobile station from one or more paging carriers corresponding to the paging group assigned to the mobile station; And

Monitoring the paging message on the paging transport carrier.
The method of claim 23, wherein

Selecting the paging transport carrier,

Selecting the paging transport carrier based on the number of one or more paging carriers corresponding to the paging group assigned to the mobile station.