Supporting idle mode of mobile station in wireless access system

The present invention relates to a wireless connection system, and more specifically, to an idle mode of a mobile station in the wireless connection system.

Ultra-wideband systems support idle mode to minimize power consumption of mobile subscriber stations (MSS). In idle mode, the mobile station does not need to perform a handoff procedure when moving between base stations within the same paging zone. Therefore, the mobile station does not have to transfer the Uplink information for the handoff procedure, and the power consumption can be reduced accordingly.

A paging area is defined as an overall area in charge of a plurality of base stations called a paging group, and base stations included in the same paging area have the same paging cycle (Paging_Cycle) and paging offset (Paging_Offset).

The mobile station can request the base station to switch to idle mode. The base station transmits its own paging area ID (Paging-group ID) and its paging cycle and paging offset. The mobile station is switched to the idle mode state.

During idle mode, the mobile station can determine whether to continue idle mode or end it from the paging transmitted from the base station to the broadcast form at each promised paging cycle. is there.

When a mobile station in idle mode generates traffic to be forwarded, the mobile station can exit idle mode. In the event of traffic that must be transmitted to a mobile station in idle mode, the base station can allow the mobile station to exit idle mode through paging. In addition, if the mobile station in the idle mode moves to another paging area, or if the paging cannot be received at the specified time due to reasons such as loss of synchronization, the mobile station can exit the idle mode. ..

In short, a mobile station in idle mode guarantees free movement in the same paging area by successfully receiving periodic paging, unless there is information to transfer or receive. Will be done.

Backbone messages are transferred over a wire between base stations to form a single paging area. Table 1 shows an example of the backbone message (Paging-group-action backbone message) format.

<tables num="1"><img file="JP4739331B2_D0001.tif" /></tables> The backbone message is transmitted between base stations. The backbone message can be used for the following four purposes depending on the contents of the Action field.

The receiving base station (target BS) can be specified for a specific paging group (Action = 0). The receiving base station can be excluded from a specific paging group (Action = 1). You can ask which paging group the receiving base station belongs to (Action = 2). It is possible to inform which paging group the transmitting base station (Sender BS) belongs to (Action = 3).

Since one base station can belong to one or more paging areas, the backbone message can include information for a plurality of paging groups. From the backbone message, the base station can confirm the paging period and paging offset used in each paging area. Base stations can be dynamically assigned to paging groups through the backbone message.

The mobile station uses one of the existing MAC messages, DREG_REQ, to switch to idle mode. The format of the DREG_REQ message is shown in Table 2 below.

<tables num="2"><img file="JP4739331B2_D0002.tif" /></tables> The mobile station can request itself to switch to the idle mode by setting the De-registration Request Code of the DERG_REQ message to 0x01 and transmitting it to the base station. At this time, it is also possible to transmit a desired paging cycle.

The base station that receives the DERG_REQ message can respond to the mobile station request through the existing DREG_CMD message. The format of the DREG_CMD message is shown in Table 3 below.

<tables num="3"><img file="JP4739331B2_D0003.tif" /></tables> The base station allows switching to idle mode through the action code (Action Code) of the DREG_CMD message (Action Code = 0x05), and requests switching to idle mode again after a certain period of time (Action Code = 0x06). ), Or you can prevent it from requesting any further switching to idle mode until it transfers DREG_CMD (Action Code = 0x07).

The detailed contents of the action code of the DREG_CMD message are shown in Table 4 below.

<tables num="4"><img file="JP4739331B2_D0004.tif" /></tables> Each base station belonging to the same paging area must be able to share information for the mobile station that has switched to idle mode, thereby informing the procedure that each mobile station must perform at each paging cycle.

The Paging-announce backbone message shown in Table 5 below is used for this purpose.

<tables num="5"><img file="JP4739331B2_D0005.tif" /></tables> The paging guidance backbone message must be transmitted to all base stations belonging to the same paging area. The base station that receives the paging guidance backbone message must always page the MAC address of the mobile station included in the message according to the paging cycle and paging offset in this message.

As a result, through the paging guidance backbone message, all base stations belonging to a certain paging area can maintain the same MAC address of the mobile station that must be paging. Therefore, a mobile station can currently receive paging information for itself at each paging cycle as long as it does not deviate from the paging area.

The format of the paging message (MOB-PAG_ADV) that each base station transfers to the mobile station in the idle mode through paging is shown in Table 6 below. The paging message is transmitted to the mobile station in the form of Broadcast.

<tables num="6"><img file="JP4739331B2_D0006.tif" /></tables> Whether the mobile station that received the paging message can continuously maintain the idle mode through the 2-bit action code (Action Code = 00), or ranging to update the location information. You can decide whether you have to do (Action Code = 01) or exit idle mode to receive the downlink traffic that you have to propagate to yourself (Action Code = 10).

The mobile station must exit idle mode when traffic that the mobile station must forward occurs (uplink traffic occurs). In addition, the mobile station must exit idle mode when traffic that must be received occurs (downlink traffic occurs). Then, if the current paging area is out of the current paging area, or if periodic paging cannot be received due to a problem in the transfer process, the idle mode must be terminated.

<p> The present invention relates to a method of supporting an idle mode of a mobile station in a wireless connection system that essentially solves at least one problem of the prior art.</p><p> An object of the present invention is to accurately indicate the action to be taken by a terminal in idle mode, which is a technique for minimizing terminal power consumption of a wideband wireless connection system. The purpose is to provide an idle mode support method for terminals with a wideband wireless connection system that can guarantee operation.</p>

<p> As an embodiment of the present invention to achieve the above object, a method of supporting a mobile station in idle mode in a wireless communication system using a paging controller is performed by the mobile station. Includes the stage of entering idle mode. Further, from at least one of the plurality of base stations belonging to the same paging group, the paging command word is at least one of the plurality of base stations as a response to the paging announcement transferred from the paging controller. Raising to confirm the availability of the mobile station with respect to at least one of a plurality of base stations included in the paging group while the mobile station is in idle mode. Paging command word that includes the paging command action code associated with performing ranging) Paging command word (paging) Includes the stage of receiving command). Further, a plurality of base stations belonging to the same paging group receive an idle mode end state from the paging controller, the mobile station exits the idle mode, and among the plurality of base stations. Includes one and the stage of setting the connection.</p><p> The paging announcement can preferably be generated from the paging controller if there is downlink traffic data transmitted to the mobile station. Further, the paging announcement can be preferably generated from the paging controller when there is uplink traffic data from the mobile station. The idle mode response command word can preferably include at least one of a paging identifier, a paging cycle, and an offset. The steps of exiting the idle mode and setting the connection are preferably a step of transferring a ranging request to one of the plurality of base stations associated with the mobile station, and said Ranging response from one of multiple base stations The stage of receiving response) can be further included.</p><p> The paging announcement preferably (1) adds the mobile station to the paging list; (2) removes the mobile station from the paging list; (3) performs raining to establish a position; and (4) A paging announcement action code including at least one of the network intrusions can be included. The paging command action code can preferably include at least one of (1) network entry; and (2) a laneing performance to establish a location.</p><p> The idle mode entry stage is preferably a stage in which the mobile station requests a serving base station associated with a paging controller that controls a plurality of base stations associated with the paging group to enter the idle mode. Can be further included. Further, the idle mode entry stage can preferably further include a step of receiving an idle mode response command for entering the idle mode from the serving base station.</p><p> Preferably, the paging controller can be identified by a paging controller identifier and the mobile station can be identified by a MAC (medium access controller) identifier. The paging command word can preferably include information that identifies the mobile station using the MAC identifier. The paging guide can preferably include information that identifies the mobile station using the MAC identifier. The idle mode entry stage by the mobile station preferably further includes a step in which the paging controller notifies a plurality of base stations belonging to the paging group of the idle mode entering status of the mobile station. Can be done.</p><p> As another embodiment, a method of supporting idle mode by a network in a wireless communication system using a paging controller is from a mobile station to a paging group to enter idle mode. Includes the step of receiving a request to a serving base station associated with a paging controller that controls multiple base stations to which it belongs. In addition, an idle mode response for entering the idle mode. The command) includes a step of transferring from the serving base station to the mobile station. Further, at least one of the plurality of base stations belonging to the same paging group generates a response from at least one of the plurality of base stations as a response to the paging guidance transferred from the paging controller, and the mobile station causes the mobile station. While in idle mode, paging associated with performing ranging to ascertain the availability of the mobile station for at least one of the plurality of base stations included in the paging group. Includes the step of transferring a paging command containing a paging command action code. It also includes establishing a connection between one of the plurality of base stations and the mobile station. It also includes a step of transferring an idle mode exit status from the paging controller to a plurality of base stations belonging to the same paging group.</p><p> Further, preferably, a step of transferring an idle mode information request message from the serving base station to the paging controller can be further included in order to provide information corresponding to the mobile station. .. Further, preferably, the step of receiving the idle mode information request message from the serving base station by the paging controller and the idle mode information request message correspond to the MAC hash skip threshold value (medium access controller hash skip threshold). When information is included, it can further include a step of transferring an idle mode information response message from the paging controller to at least one of the plurality of base stations.</p><p> Further, preferably, the paging controller receives the idle mode information request message from the serving base station, and the paging controller sends an idle mode information response message to the serving base station. The transfer stage and can be further included. The idle mode information response message is preferably transferred to at least one of the plurality of base stations to notify at least one of the plurality of base stations that the mobile station has terminated the idle mode. Information can be included. Further, preferably, a step of transferring an idle mode command message from the serving base station to the mobile station as a response to the idle mode information response message can be further included.</p>

The present invention can be applied in a wideband wireless connection system.

Hereinafter, a preferred embodiment of the idle mode support method for the mobile station in the wideband wireless connection system according to the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numbers and symbols shall be used in common for the same or similar parts as much as possible.

The present invention can be used for the contents of the IEEE802 ultra-wideband wireless connection system standard. The present invention can be used for the contents of any type of wireless connection system.

FIG. 1 is a block diagram showing a paging group according to an embodiment of the present invention.

As shown in FIG. 1, at least one base station can form a paging group. Base stations belonging to the same paging group send and receive information necessary for providing the idle mode through a backbone message. On the other hand, information necessary for providing the idle mode can be transmitted and received through a backbone message between base stations belonging to different paging groups.

FIG. 2 is a processing flow chart showing an idle mode procedure according to an embodiment of the present invention.

Referring to FIG. 2, in order for the mobile station to switch to the idle mode, the base station is requested to switch to the idle mode by using a request message such as DREG_REQ which is one of the existing MAC messages (S21). The format of the DERG_REQ message is as shown in Table 2.

For example, the mobile station can request itself to switch to the idle mode by setting the De-registration Request Code of the DERG_REQ message to 0x01 and transmitting it to the base station.

The base station that receives the DERG_REQ message responds to the mobile station request through a command word message such as an existing DREG_CMD message (S22). The format of the DREG_CMD message is as shown in Table 3.

The base station can allow switching to idle mode through the action code (Action Code) of the DREG_CMD message (Action Code = 0x05). In addition, it is possible to request the switch to the idle mode again after a certain period of time (Action Code = 0x06). You can also prevent further switching to idle mode until you transfer DREG_CMD (Action Code = 0x07).

The detailed content of the action code of the DREG_CMD message is described in Table 4 above.

According to one embodiment, base stations belonging to the same paging group can share information for a mobile station that has switched to idle mode. Through the information, it is possible to inform the procedure that the mobile station must perform for each paging cycle.

The Paging-announce backbone message shown in Table 5 above is used for this purpose. The paging guidance backbone message is transmitted to all base stations belonging to the same paging group (S23).

In another embodiment, an action code is added to the paging guidance backbone message to specify the necessary action for the mobile station in idle mode.

Therefore, in the fields of the paging guidance backbone message shown in Table 5, the'Num MSS',' MSS MAC address',' PAGING CYCLE', and'PAGING OFFSET'parts are changed as shown in Table 7 below.

<tables num="7"><img file="JP4739331B2_D0007.tif" /></tables> According to other examples, the conventional PAGING_CYCLE (16bit) and PAGING_OFFSET (8bit) can be removed, as shown in Table 7. This is because all base stations belonging to the same paging area have the same paging period and paging offset.

Instead, an action code (for example, a 3-bit action code) is added to the paging guidance backbone message to add the MAC address of the specific mobile station to the paging inventory (Action Code = 0). Also, the MAC address of the specific mobile station is removed from the paging list (Action Code = 1). In addition, ranging is performed to update the location information (Action Code = 2). It is also possible to specify that the idle mode should be terminated and the re-registration procedure should be performed again on the network (Action Code = 3).

Table 6 shows the format of the paging message MOB-PAG_ADV, which is an exemplary format of the paging message and is transferred by each base station to the mobile station in the idle mode through paging. The paging message is preferably transmitted to the mobile station in the form of Broadcast.

From the action code (for example, 2-bit action code), the mobile station that received the paging message can continue to maintain the idle mode (Action Code = 00), and lane to update the location information (action code = 00). You can decide whether you have to perform ranging) (Action Code = 01) or exit idle mode to receive the downlink traffic that must be propagated to you (Action Code = 10).

A base station that allows a mobile station to switch to idle mode transfers the paging guidance backbone message to all base stations in the same paging area as itself by setting the action code to 0 (S23). The base station that receives the paging guidance backbone message stores the MAC address of the corresponding mobile station in its own paging list, and transfers this through the paging message MOB-PAG_ADV every paging cycle (S24).

The fact that the paging message can be received alone indicates that the mobile station can continue to maintain idle mode, so it must re-register with the mobile station that requires some action, that is, the network. Alternatively, waste of radio resources can be prevented by including only the MAC address of the mobile station that must be rained for updating the location information. Therefore, it is preferable to change the'MSS MAC Address hash'and'Action Code' fields of the paging message MOB-PAG_ADV shown in Table 6 as shown in Table 8 below.

<tables num="8"><img file="JP4739331B2_D0008.tif" /></tables> If there is downlink traffic that must be transmitted to the mobile station and the mobile station needs to exit idle mode, the base station will tell which base station area the mobile station is currently in in the paging area. I don't know. Therefore, the corresponding base station sets the action code of the modified paging guidance backbone message to 3, and transmits it to all base stations in the same paging area as itself.

When the base station that receives the paging guidance backbone message sets the action code of the paging message to 00 and broadcasts it to all mobile stations, the corresponding mobile station terminates the idle mode and re-registers with the network. Can be made to perform the procedure for.

After the mobile station has successfully exited idle mode, the base station then transmits the modified paging guidance backbone message to all base stations by setting the action code to 1. You can avoid paging to mobile stations.

FIG. 3 is a processing flow chart showing a procedure for ending the idle mode when downlink traffic that must be transmitted to a mobile station in the idle mode occurs according to an embodiment of the present invention.

With reference to FIG. 3, since each base station does not know in which base station area the mobile station in idle mode is located, the downlink traffic unconditionally requests the mobile station to switch to idle mode for the first time. It is transmitted to the base station (first base station).

When downlink traffic to a mobile station that allows switching to idle mode is received, the first base station (first base station) issues an action code to all base stations in the paging area to which it belongs. Set to 11 to forward the paging guidance backbone message (S31).

All the base stations that have received the paging guidance message set the action code of the paging message MOV_PAG_ADV to 10 to all the mobile stations in their own area and transfer the paging message to the broadcast mode (S32).

Upon receiving the paging message, the relevant mobile station terminates the idle mode and requests the second base station (currently the base station) in charge of the area in which it is currently located to re-register with the network (S33). The second base station can confirm the base station ID of the first base station through the paging guidance message.

The second base station that has received the re-registration request is searched by the first base station by setting the Action flag of the MSS_Info_Request backbone message to be transferred between the base stations to 1 and transferring the message. Notify that the mobile station you are trying to use is in your area (S34). The format of the MSS_Info_Request backbone message is shown in Table 9 below.

<tables num="9"><img file="JP4739331B2_D0009.tif" /></tables> Upon receiving the MSS_Info_Request, the first base station notifies all base stations in the same paging area as itself to delete the mobile station that has finished the idle mode from the paging list through the paging guidance backbone message.

It is also preferred that the first base station forward the mobile station traffic that it has ever received through a data transmission message having the format shown in Table 10.

<tables num="10"><img file="JP4739331B2_D0010.tif" /></tables> If there is downlink traffic that must be transmitted to the mobile station and the mobile station needs to exit idle mode unless it needs to exit idle mode, the base station will use paging. Before the mobile station requests that the idle mode be terminated, the procedure for the mobile station to terminate the idle mode is performed first.

Upon receiving a request from the mobile station to exit idle mode and re-register with the network, the base station sets the action code of the paging guidance backbone message to 1 for all base stations belonging to the same paging area as itself. By communicating, the mobile station in question should be removed from the paging inventory.

FIG. 4 is a configuration diagram showing a wideband wireless connection system including a paging controller according to an embodiment of the present invention.

Referring to FIG. 4, the paging controller sends and receives information necessary for idle mode support to and from base stations belonging to at least one paging group, thereby transmitting and receiving idle mode for mobile stations in each base station area via the base stations. Take control. That is, information necessary for providing the idle mode can be transmitted and received between the base stations via the paging controller. The paging controller may be provided in a specific base station, or may be provided separately from the base station.

FIG. 5 is a processing flow chart showing a procedure for managing a base station belonging to a paging group in a wideband wireless connection system provided with a paging controller according to an embodiment of the present invention.

As shown in FIG. 5, the paging controller can control the base stations belonging to each paging group by using the backbone message. For example, assign a paging group to a base station (Action Code = 0000), remove it from a specific paging group (Action Code = 0001), using the action code of the Paging-group-action request backbone message. The paging information of the corresponding base station can be requested (Action Code = 0010), or the paging information of another base station can be notified (Action Code = 0011) (S51). Table 11 shows an example of the paging group operation request message.

<tables num="11"><img file="JP4739331B2_D0011.tif" /></tables> The base station can transfer the information necessary for providing the idle mode by using the action code of the paging-group-action response message transmitted by the base station to the paging controller (S52). For example, can the response to the paging group action request message forwarded by the paging controller to add or remove to the paging group be forwarded (Action Code = 0000) and provide its own paging information (Action Code = 0001)? , Can request paging information for other base stations (Action Code = 0010). Table 12 shows an example of a paging group action response message.

<tables num="12"><img file="JP4739331B2_D0012.tif" /></tables> FIG. 6 is a processing flow diagram showing an idle mode initiation procedure in a wideband wireless connection system provided with a paging controller according to an embodiment of the present invention.

As shown in Fig. 6, when a mobile station (MSS; Mobile Subscriber Station) tries to switch to idle mode, it switches idle mode by transferring an idle mode switching request DREG-REQ message to the base station to which it belongs. Request (S61). The DREG-REQ message contains information requesting deregistration from the base station to which it belongs (De-registration Request Code) and TLV-encoded information (for example, paging cycle request TLV, idle mode maintenance information TLV, MAC hash omission limit). The value TLV) can be included.

Upon receiving the idle mode switching request message, the base station transfers the idle mode information request message Idle-Info-REQ to notify the information of the mobile station requesting switching to the idle mode to the paging controller (S62). Table 13 shows an example of the idle mode information request message.

<tables num="13-1"><img file="JP4739331B2_D0013.tif" /></tables>

<tables num="13-2"><img file="JP4739331B2_D0014.tif" /></tables> As shown in Table 13, the idle mode information request message includes information that a specific mobile station requests switching to idle mode, the MAC address of the mobile station, service flow information of the mobile station, and TLV-encoded information (for example, idle mode). Mode maintenance information TLV, MAC hash omission limit TLV) can be included.

Upon receiving the idle mode information request message, the paging controller transfers the idle mode information response Idle-Info-RSP message to the base station that has transferred the idle mode information request message (S63). At this time, if the idle mode information request message transferred from the base station contains information regarding the MAC hash omission limit value, the paging controller responds to all the base stations belonging to the paging group with the idle mode information. Forward the message (S65).

Table 14 shows an example of the idle mode information response Idle-Info-RSP message.

<tables num="14-1"><img file="JP4739331B2_D0015.tif" /></tables>

<tables num="14-2"><img file="JP4739331B2_D0016.tif" /></tables> As shown in Table 14, the idle mode information response Idle-Info-RSP message is information indicating that the mobile station has switched to idle mode, the MAC address of the mobile station, the service flow information of the mobile station, and the TLV-encoded information. (For example, paging information TLV, paging controller ID TLV, idle mode maintenance information TLV, MAC hash omission limit TLV) can be included.

The base station that has received the idle mode information response Idle-Info-RSP message transfers the idle mode instruction message DREG-CMD to the mobile station that has requested the idle mode switching (S64). The idle mode instruction message includes information instructing idle mode switching and TLV-encoded information (for example, paging information TLV, paging controller ID TLV, idle mode maintenance information TLV, MAC hash omission limit value TLV). Can be done.

FIG. 7 is a processing flow chart showing a case where traffic is generated in a mobile station in idle mode in a wideband wireless connection system provided with a paging controller according to an embodiment of the present invention.

As shown in FIG. 7, the mobile station switches to the idle mode state (S71 to S74). The mobile station in the idle mode can stay in the base station area where the idle mode is switched, or can move to another base station area. In this embodiment, an example of the case where the mobile station moves from the idle mode state to the second base station area will be described.

When downlink traffic occurs in the idle mode, the base station to which the mobile station belongs when the idle mode is switched (hereinafter referred to as the first base station) indicates that downlink traffic has occurred in the mobile station in the idle mode. The information to be notified is transferred to the paging controller (S75). The paging controller sends a paging-announce message to all base stations existing in the paging area to notify that the mobile station in the idle mode exits the idle mode and re-enters the network. Transfer (S76 to S77). As a result, the base station broadcasts a paging advertisement message (MOB_PAG-ADV). An example of this paging advertising message is shown in Table 6 above.

Table 15 shows an example of a paging guidance message.

<tables num="15"><img file="JP4739331B2_D0017.tif" /></tables> In the idle mode, the mobile station that has moved to the area of the second base station recognizes that downlink traffic has occurred to itself through the paging advertisement message (MOB_PAG-ADV) that is broadcast to the paging area at regular intervals. Transfer the raining request message for re-entering the network to the second base station (S78). The second base station notifies the paging controller that the mobile station has responded to the paging by using the idle mode information request message, and requests the mobile station session information before the idle mode switching (S79). The paging controller transfers the idle mode information response message containing the session information of the mobile station and the information about the base station where the mobile station was located at the time when the mobile station switches to the idle mode to the second base station (S80). ..

The second base station transfers the raining response message including the handover optimization flag to the mobile station based on the session information and the idle mode maintenance information of the mobile station transferred by the paging controller (S81). When the mobile station performs the network re-entry process (S82), the second base station in charge of the area where the mobile station is currently located uses an idle mode information request message to indicate that the mobile station has re-entered the network. Notifying the paging controller (S83), at this time, the second base station can include the handover optimization flag included in the raining response message.

The paging controller recognizes that the mobile station has switched to idle mode at the first base station and has now re-entered the network in the second base station area, and uses the idle mode information response message to enter the first base station. Instructs the transmitted traffic to be forwarded to the mobile station through the second base station (S84).

The first base station transmits the traffic to the second base station according to the instruction of the paging controller, and the second base station transfers the traffic to the mobile station (S85). The paging controller uses an idle mode information response message to notify all base stations belonging to the paging group that the mobile station has terminated the idle mode (S86). Each base station that receives the idle mode information response message from the paging controller removes the MAC address of the mobile station from the idle mode mobile station list.

In one embodiment, if the downlink traffic to be transmitted to the mobile station in idle mode is transmitted via the paging controller, the S75 or S84 step may be omitted.

As another embodiment, a method of assisting a mobile station in idle mode in a wireless communication system using a paging controller is a step in which the mobile station enters idle mode. Including. Further, it is generated from at least one of the plurality of base stations belonging to the same paging group as a response to the paging announcement transferred from the paging controller. While the mobile station is in idle mode, ranging is performed to confirm the availability of the mobile station with respect to at least one of a plurality of base stations included in the paging group. A paging command word that contains a paging command action code associated with the paging command word (paging command action code). Includes the stage of receiving command). Further, a plurality of base stations belonging to the same paging group receive an idle mode end state from the paging controller, the mobile station exits the idle mode, and among the plurality of base stations. Includes one and the stage of setting the connection.

The paging announcement can preferably be generated from the paging controller if there is downlink traffic data transmitted to the mobile station. Further, the paging announcement can be preferably generated from the paging controller when there is uplink traffic data from the mobile station. The idle mode response command word can preferably include at least one of a paging identifier, a paging cycle, and an offset. The steps of exiting the idle mode and setting the connection are preferably a step of transferring a ranging request to one of the plurality of base stations associated with the mobile station, and said Ranging response from one of multiple base stations The stage of receiving response) can be further included.

The paging announcement preferably (1) adds the mobile station to the paging list; (2) removes the mobile station from the paging list; (3) performs raining to establish a position; And (4) a paging announcement action code including at least one of the network intrusions can be included. The paging command action code can preferably include at least one of (1) network entry; and (2) a laneing performance to establish a location.

The idle mode entry stage preferably further comprises a step of requesting a serving base station associated with a paging controller that controls a plurality of base stations associated with the paging group to enter the idle mode. be able to. Further, the idle mode entry stage can preferably further include a step of receiving an idle mode response command for entering the idle mode from the serving base station.

Preferably, the paging controller can be identified by a paging controller identifier and the mobile station can be identified by a MAC (medium access controller) identifier. The paging command word can preferably include information that identifies the mobile station using the MAC identifier. The paging guide can preferably include information that identifies the mobile station using the MAC identifier. The idle mode entry stage by the mobile station preferably further includes a step in which the paging controller notifies a plurality of base stations belonging to the paging group of the idle mode entering status of the mobile station. be able to.

As yet another embodiment, a method of supporting idle mode by a network in a wireless communication system using a paging controller is controlled from a mobile station to enter idle mode. The machine includes receiving a request to a serving base station associated with the paging controller that controls multiple base stations belonging to the paging group. In addition, an idle mode response for entering the idle mode. The command) includes a step of transferring from the serving base station to the mobile station. Further, at least one of the plurality of base stations belonging to the same paging group generates a response from at least one of the plurality of base stations as a response to the paging guidance transferred from the paging controller, and the mobile station causes the mobile station. While in idle mode, paging associated with performing ranging to ascertain the availability of the mobile station for at least one of the plurality of base stations included in the paging group. Includes the step of transferring a paging command containing a paging command action code. It also includes establishing a connection between one of the plurality of base stations and the mobile station. It also includes a step of transferring an idle mode exit status from the paging controller to a plurality of base stations belonging to the same paging group.

Further, preferably, a step of transferring an idle mode information request message from the serving base station to the paging controller can be further included in order to provide information corresponding to the mobile station. .. Further, preferably, the step of receiving the idle mode information request message from the serving base station by the paging controller and the idle mode information request message correspond to the MAC hash skip threshold value (medium access controller hash skip threshold). When information is included, it may further include a step of transferring an idle mode information response message from the paging controller to at least one of the plurality of base stations.

Further, preferably, the paging controller receives the idle mode information request message from the serving base station, and the paging controller sends an idle mode information response message to the serving base station. It can further include a transfer stage. The idle mode information response message is preferably transferred to at least one of the plurality of base stations to notify at least one of the plurality of base stations that the mobile station has terminated the idle mode. Information can be included. Further, preferably, a step of transferring an idle mode command message from the serving base station to the mobile station as a response to the idle mode information response message can be further included.

According to the present invention, each base station can include the operation of a terminal in which each base station is in idle mode through paging, using a paging guidance backbone message. The paging guidance backbone message can be transmitted by wire between base stations through paging. Therefore, the present invention can innovatively reduce the size of the paging message (MOB-PAG_ADV) to be accurately transmitted to all terminals in idle mode. Further, the present invention has an effect that in a wideband wireless connection system provided with a paging controller, the idle mode can be supported more efficiently by using the paging controller.

It will be obvious to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit and essential features of the present invention. Therefore, the above detailed description should not be construed in any way constrained and should be considered as an example. The scope of the invention should be determined by a reasonable interpretation of the appended claims, and any modification within the equivalent scope of the invention is within the scope of the invention.

<figref num="1">It is a block diagram which shows the paging group by one Example of this invention.</figref><figref num="2">It is a process flow diagram which shows the idle mode procedure by one Example of this invention.</figref><figref num="3">It is a process flow diagram which shows the procedure of terminating the idle mode when the downlink traffic to be transmitted to the mobile station in the idle mode occurs according to the Example of this invention.</figref><figref num="4">It is a block diagram which shows the wide band wireless connection system provided with the paging controller by one Example of this invention.</figref><figref num="5">It is a process flow diagram which shows the procedure for managing the base station belonging to the paging group in the wide band wireless connection system provided with the paging controller according to one Embodiment of this invention.</figref><figref num="6">FIG. 5 is a processing flow chart showing an idle mode initiation procedure in a wideband wireless connection system provided with a paging controller according to an embodiment of the present invention.</figref><figref num="7">FIG. 5 is a processing flow chart showing a case where traffic is generated in a mobile station in idle mode in a wideband wireless connection system provided with a paging controller according to an embodiment of the present invention.</figref>