MXPA06014060A - Controlling idle mode of mobile subscriber station in wireless access system - Google Patents

Abstract

A method of controlling idle mode comprises requesting to enter idle mode by a mobile subscriber station by transmitting an idle mode request to a serving base station having a serving paging group identifier with which the serving base station is associated. The method also comprises entering the idle mode by receiving an idle mode grant command from the serving base station. The method also comprises initiating a ranging request between the mobile subscriber station and the target base station associated with the target paging group, wherein the ranging request comprises the serving base station identifier and the serving paging group identifier. The method also comprises connecting with the target base station, wherein the serving base station is informed, by using the serving base station identifier, that the mobile subscriber station is not in the idle mode with the serving base station.

Description

INACTIVAL MODE CONTROL OF MOBILE SUBSCRIBER STATION IN WIRELESS ACCESS SYSTEM TECHNICAL FIELD The present invention relates, in general terms, to a wireless access system and, more particularly, to an idle mode in a mobile subscriber station. BACKGROUND OF THE ART Broadband wireless access systems typically support an idle mode in order to minimize the power consumption of a mobile subscriber station (MSS). During the idle mode, the MSS does not perform a transfer procedure when traveling between mobile stations in the same location area. Accordingly, the MSS does not require transmitting uplink information for the transfer procedure which reduces the corresponding energy consumption. A location zone is defined as an area controlled by several base stations called the location group. Each of the base stations in the location group has the same location cycle (Location_Cycle) and the same location offset (Location_Design). The MSS can make a request to a base station in the direction to switch to the inactive mode. The base station then offers a location message including its location group ID, a corresponding location cycle, and a corresponding location offset. The corresponding MSS can therefore change to the inactive mode. During the idle mode, the MSS can determine whether to continue or terminate the idle mode based on the location message provided by the base station in each location cycle. If traffic must be transmitted by the MSS while it is in idle mode, the MSS may terminate the idle mode. For example, the MSS can be enabled to terminate the inactive mode by the BS. In addition, if the MSS moves to another paging area or loses its synchronization while in the idle mode and can not receive a paging call within a predefined time, the MSS may terminate the idle mode. When the MSS is in the idle mode, the MSS normally receives a periodical call to ensure its free movement in the same location area without performing the transfer procedure. When configuring a localization zone, a structure message (location group action) is transferred via wire between base stations. An example of location group action structure message is shown in Table 1.

[Table 1] Field Size Notes Type of Message 8 bits BS ID Broadcaster 48 Unique station identifier Base bits (Same number as the number broadcast in the DL-MAP message) White BS ID 48 Unique station identifier Base bits ( Same number as the number broadcast in the message DL- MAP bits) Seal of Time 32 Number of milliseconds from midnight GMT (set in OxTTTTTTT to ignore) Action 4 bits Assign BS target location Remove target BS from location groups Search ( to which location groups does the white BS belong?) Information (Location groups to which BD belongs) Registers No. 4 bits Number of ID records Forj (j = 0; < Num Records; j ++). { ID_of_group_of 16 Location group ID Location bits LOCAL_Clock 16 Cycle in which the location message is transmitted within the location group 8-bit DESPHASE Parameter of LOCALI-LOCALIZATION DESIGN OF MSS} TBD Security Field Medium to authenticate this message CRC Field 32 IEEE CRC-32 bits The location group action structure message is communicated between base stations. The location group action structure message can be used for four purposes based on the contents of a field of action (Action). A receiving base station (white BS) can be assigned (designated) to a specific location group (Action = 0)Alternatively, the white BS can be excluded from the specific location group (Action = l). Alternatively, you can ask the white BS the location group to which the white BS belongs (Action = 2). Alternatively, the target BS can be informed of the location group to which the transmitting base station (transmitting BS) belongs (Action = 3). Since a single base station may belong to one or more location zones, the location group action structure message may contain information belonging to several location groups. The base stations can be informed of the location and lag cycle used in each location zone through the location group action structure message. In addition, the base stations can be dynamically assigned to the location groups through the location action groups structure message. When changing an MSS to an inactive mode, a DREG_REQ message (one of the previous MAC messages) is used. A DSREG_REG message format is shown in Table 2. [Table 2] Syntax Size Notes DREG- REQ_Message_Format (). { Type of Message 8 bits of Handling = 29 Code of Request- 8 bits 0x00 = request of record of record of SS record coming from BS and network 0x01 = request of registration of MSS coming from BS of Service and invitation of location Availability mode of MSS 0x02-0xFF = reserved 16-bit Cycle Request Valid only in case of So-of Designation lawfulness Code = 0x01 Coding Parameters Variable by TLV} An MSS can send a request to a service base station that the MSS will change to the idle mode by setting the Designation Request Code of the DREG_REQ message to 0x01 and then supplying the message DREG_REQ to the base station. This allows the provision of a specific location cycle. The service base station receives the DREG_REQ message and can respond to the request through the MSS by means of a conventional DREG_CMD message. A message format DREG_CMD is shown in Table 3. [Table 3] Syntax Size Notes DREG_CMD_Message_Format (). { Type of Handling Message = 29 8 bits Action Code 8 bits Parameters coded for TLV Variable} The service base station can allow change to inactive mode through the action code (Action code = 0x05). Alternatively, the service base station may allow the MSS to request the change to inactive mode after a lapse of time (Action Code = 0x06). Alternatively, the service base station may not allow the MSS to make the change request to the idle mode until the service base station transmits the message DREG_CMD (Action code = 0x07). Details of the action code of the DREG_CMD message are shown in Table 4. [Table 4 Action Action Code 0x00 The SS will exit the current channel and will try to access another channel 0x01 SS will listen to the current channel but will not transmit until receiving a RES-CMD message or DREG_CMD with Action Code 0x00. 0x02 SS will listen to the current channel but will only transmit on the Basic, Primary Management, and Secondary Management connections. 0x03 SS will return to normal operations and can transmit on any of its active connections. 0x04 SS will terminate the current Normal Operations with the BS: the BS will transmit this action code only in response to some SS DREG_REQ. 0x05 Require de-registration of Service BSS MSS and request start of inactive MSS mode. 0x06 The MSS can retransmit the DREG_REQ message after the time lapse (REQ duration) provided. 0x07 The MSS will not retransmit the DREG_REQ message and wait for the DREG_CMD message. 0x08- Reserved OxFF Base stations belonging to the same location zone can share the information belonging to the MSS connected to the inactive mode. Using this information, the service BS can notify the MSS of procedures to execute in each location cycle. A location announcement structure message is shown in Table 5. [Table 5] Field Size Notes Type of Message 8 bits BS ID Broadcaster 48 Unique station identifier Base bits (Same number as the number issued in the DL message- MAP) White BS ID 48 Set in Oxffffff for Bits ignore Time Stamp 32 Number of milliseconds from midnight GMT (set to Oxffffffff to ignore) MSS Num 8 bits Number of MSSs to locate Forj (j = 0; <Num MSS; j ++). { MSS MAC Address Location bits LOCAL_Clock 16 Parameter LOCALIZATION CYCLE ZATION bits MSS SESSION 8-bit DESPHASE Parameter of LOCALI- LOCALIZATION OF MSS} TBD Security Field Medium to authenticate this message CRC Field 32 IEEE CRC-32 Bits The location advertisement structure message can be supplied to all base stations that belong to the same location zone. The base stations that receive the location advertisement structure message perform the location by comparing the MAC addresses of MSSs included in the message with the location and lag cycle of the message. Accordingly, due to the location advertisement structure message, all base stations belonging to a specific location area can maintain identically MAC addresses of MSSs to be located. Thus, a specific MSS can receive its location information in each location cycle unless the MSS leaves (deviates) from the current location zone. A location message format MOB_PAG_ADV transmitted to MSSs in the idle mode via location call forwarding by each base station is shown in Table 6. The location message is supplied to MSSs in broadcast format. [Table 6] Field Size Notes Type of Message 8 bits MOB_PAG-ADV_Message_Format O. { Type of Message 8 of Management = ?? bits Group ID of 8 Number of Locator Group IDs Num bits in this message For (i = 0; J <Num_Paging_Group _IDs; I). { Group ID of 8 bit location} For (j = 0; j <Num_MACs; MSS MAC number in message J ++) can be used from the . { Message length (found in the generic MAC header). Checking 24 The MAC address check is obtained by calculating a CRC24 on the MSS dide MSS 48 bit MAC address. The polynomial for the calculation is 0x864CFB. Action Code • 2 Local action instruction¬ Bits to MSS 00 = No Action required 01 = Perform detection to establish the location and recognition message 10 = Enter Network 11 = Reserved Reserved 6 Bits} } The MSS receives the location message and can decide whether to keep the idle mode continuously (Action Code = 00), if it performs a detection to establish an update of location information (Action Code = 01), and / or if the idle mode to receive downlink traffic (Action Code = 10). The MSS may terminate the idle mode if the MSS requires to transmit traffic (occurrence of uplink traffic). The MSS may also terminate the idle mode if the MSS requires receiving traffic (occurrence of downlink traffic). The MSS may also terminate the inactive mode if the MSS can not receive a periodic call location due to deviation from the current location area or due to the transmission problem. Figure 1 is a diagram illustrating a method for terminating the idle mode of a mobile subscriber station (MSS) in case of downlink traffic occurrence.

With reference to Figure 1, a method for terminating the inactive mode in an MSS is explained in relation to a case in which the downlink traffic 101 must be supplied to an MSS in an idle mode. The base stations do not know the domain to which the MSS belongs in the inactive mode. The downlink traffic is supplied without condition and is supplied without condition to a first base station (initial base station) to which the MSS initially made the request to switch to idle mode. Upon receiving the downlink traffic to the MSS, the initial base station sets an action code to 11 for all base stations that are within the location zone of the initial base station. The initial base station then transmits a location advertisement structure message to the MSS (Sil). Each of the base stations receives the location announcement message, establishes an action code of a location message MOV_PAG_ADV in, and transmits the location message to all the MSSs that are within the location area, in a broadcast format (S12). The corresponding MSS receives the location message, terminates the inactive mode, and requests a second base station (current base station) in charge of the location area where the MSS is currently located, for a re-registration in the network (S13) . The second base station receives a base station ID from the first base station through the location announcement message. The second base station receives the request for re-registration and sets an action flag of a structure message in MSS_Info_Request (Information_of_MSS_Info) to 1. The structure message of MSS_Info_Request is communicated between base stations by wire, and then transmitted to notify the first base station that the MSS is looking to leave the location zone (S14). A format of a structure message MSS_Info_Request (Application_of_Info_of_MSS) is shown in Table 7. [Table 7] Field Size Notes Global Header 152 bits ADV_Message_Format O. { For (j = 0; j < Num Records; j ++). { Unique identifier 48 Unique 48-bit identifier of MSS bits used by MSS (as provided by the MSS or by the I-am-host-of message) [I am host of] 8-bit action flag Request MSS information come from Inactive mode MSS has moved to another Location group} TBD security field A means to authenticate this message The first base station receives the MSS__Info_Request [Request_of_MSSJ_Info and notifies the base stations within the same location base zone that the MSS has terminated the inactive mode and must be deleted from a list of location. DISCLOSURE OF THE INVENTION Accordingly, the present invention focuses on the control of an inactive mode of a mobile subscriber station (MSS) in a wireless access system that substantially avoids one or several problems of the related art. An object of the present invention is to provide a method for testing an idle mode of a mobile subscriber station in a wireless access system, in a case in which an idle mode of an MSS in a first location zone must be terminated when the mobile subscriber station has left a location zone and entered another location area. The base station that initially allowed the inactive mode is notified of the termination of the inactive mode to avoid an unnecessary location call in the pre-location zone. Another object of the present invention is to provide a method for controlling an idle mode of a mobile subscriber station in a wireless access system, through which the idle mode is efficiently controlled by employing a location controller in a case in which a mobile subscriber station moves away from the location area and enters another location area. Advantages, objects, and additional features of the present invention will be presented in part in the following description and in part will be apparent to those of ordinary skill in the art upon examination of the following description or may be learned from a practice of the invention. The objects and other advantages of the invention can be obtained and achieved through the structure particularly mentioned in the written description and in the claims as well as in the attached drawings. In order to achieve these objects and other advantages and in accordance with the purpose of the present invention, the method for controlling the inactive mode between a mobile subscriber station and a network containing At least one service base station associated with a service location group and a white service station associated with a white location group, the method comprises the request to enter an inactive mode by the mobile subscriber station by means of the transmitting a request from the idle mode to the service base station having a service location group identifier with which the service base station is associated and the service base station identifier. The method also comprises entering the inactive mode by receiving the previously inactive mode granting command from the service base station, the inactive mode granting command comprising the service base station identifier and the location group identifier of the service base station. service. The method comprises initiating a detection request between the mobile subscriber station and the white base station associated with the target location group, wherein the detection request comprises the service base station identifier and the group identifier of service location. The method also comprises the connection to the white base station, where the service base station is informed, by using the identifier of the service base station, that the mobile subscriber station is not in idle mode with the service base station. The network may preferably further comprise a location controller operatively connected to the service base station. The service base station identifier may preferably be substituted with a location controller identifier associated with the location controller. The detection request 'to the white base station may preferably also comprise a location update request. The method may further preferably comprise receiving a detection response from the white base station, wherein the detection response comprises a location update response. In another embodiment, in an inactive mode control method between a mobile subscriber station and a network comprising at least one service base station associated with a service location group and a white base station associated with a group of white location, the method comprises receiving an inactive request from the mobile subscriber station to the service base station to enter an inactive mode by the mobile subscriber station, the service base station has an identifier of the service location group with which the service base station is associated and the service base station identifier. The method also comprises transmitting a granting command in an inactive mode to the mobile subscriber station from the service base station, the granting command in an inactive mode comprising the base station identifier and the group identifier. of service location. The method also comprises receiving a connection request from the mobile subscriber station to the white base station associated with the white location group, wherein the connection request comprises the service base station identifier and the identifier of service location group. The method also comprises a connection to the white base station, wherein the service base station is informed, by using the service base station identifier, that the mobile subscriber station is not in the idle mode with the service base station. The connection request to the white base station may preferably also comprise a location update request. The method may further preferably comprise an idle mode information request message to the location controller, the reception of an idle mode information response from the location controller, and the transmission of a detection response to the mobile subscriber station. The location controller may preferably inform the service base station and other base stations associated with the service location group that the mobile subscriber station is not in the idle mode with the service base station. The location controller may preferably inform the white base station and other base stations associated with the white location group that the mobile subscriber station re-entered in the inactive mode with the white base station. The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings. It will be understood that both the foregoing general description and the following detailed description of the present invention are examples and explanations and are intended to provide a further explanation of the claimed invention. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings that are included to provide a further understanding of the invention and are incorporated in and form a part of this application illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.

Figure 1 is a diagram illustrating a procedure for terminating an idle mode of a mobile subscriber station (MSS) in case of occurrence of downlink traffic.

Figure 2 is a diagram illustrating a procedure for terminating an idle mode of a mobile subscriber station (MSS) in a wireless access system, in accordance with one embodiment of the present invention. Figure 3 is a diagram illustrating an inactive mode control in a wireless access system having a location controller, in accordance with a first embodiment of the present invention. Figure 4 is a diagram illustrating an inactive mode control in a wireless access system having a location controller, in accordance with a second embodiment of the present invention. Figure 5 is a diagram illustrating an inactive mode control in a wireless access system having a location controller, in accordance with a third embodiment of the present invention. Figure 6 is a diagram illustrating an inactive mode control in a wireless access system having a location controller, in accordance with a fourth embodiment of the present invention. PREFERRED MODE OF THE INVENTION Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. When possible, the same reference numbers will be used in all the drawings to refer to the same or similar parts. The present invention can be used in the context of the IEEE802 broadband wireless access system standard. Alternatively, the present invention can be used in the context of any type of wireless access system. Figure 2 is a diagram of a method for terminating an idle mode of a mobile subscriber station (MSS) in a wireless access system, in accordance with the present invention. With reference to Figure 2, an MSS 250 is shown in an inactive mode within a first location zone 225. The MSS 250 is also shown shifted to a second location area 235. A procedure can be executed to terminate the inactive mode of the MSS 250 in the First location zone 225. With reference to the termination of the inactive mode, each location zone may use a different location cycle and a different location offset. When the MSS 250 that was in the inactive mode within the first location zone 225 moves to the second location zone 235, the MSS 250 may not be able to receive a periodic location call. A first base station (initial base station) 220 may allow the MSS 250 to switch to the inactive mode in the first location area 225. The MSS 250 may terminate the idle mode and request a second base station 230 within the second location area 235 the re-registration to a network (S21). The second base station 230 may not be aware of a base station ID of the first base station 220. The MSS 250 may therefore provide the base station ID of the first base station 220 when it requests the base station ID. registration to the network. To provide the base station ID of the first base station 220 to the second base station 230, a network re-registration request message (e.g., RNG_REQ) may be used. A preferred configuration of the RNG_REQ message is shown in Table 8. [Table 8] The second base station 230 can receive the re-registration request from the MSS 250 and can set an action flag of a structure message of MSS_Information_ Request [MSS_Info_Request] in two (ie, to indicate that the MSS 250 is moved to another location zone, see Table 7). The second base station 230 may supply the structure message of the MMS_Information_Request [MMS_Info_Request] to the first base station 220 (S22). further, upon receiving the base station ID of the first base station 220 from the MSS 250, the second base station 230 may transmit the structure message of the MSS_Information_ Request [MSS_Info_Request] to the first base station 220. The first base station 220 receives the MSS_Info_Request from the second base station 230 and can notify the base stations within the location area of the first base station 220, ie, within the first location area 225, that the MSS 250 has ended inactive mode and must be deleted from a list of location calls. Each of the base stations within the first location zone 225 can receive termination notification from the inactive mode by the MSS 250 and can clear the MSS 250 from the location call list to terminate the inactive mode for the MSS 250 Figure 3 is a diagram illustrating an inactive mode control in a wireless access system having a location call controller, in accordance with a first embodiment of the present invention. With reference to Figure 3, when an MSS 350 tries to enter an inactive mode, the MSS 350 can transmit a login request message to inactive mode (eg, DREG_REQ) to a service BS to which the MSS 350 belongs. , as for example a first BS 320, to request an entry to inactive mode (S31). The DREG_REQ message may include information pertaining to a deregistration request from the service BS to which the MSS 350 belongs (for example, deregistration request code), as well as information encoded by TLV (e.g. TLV Location, Inactive Mode Hold Information TLV, MAC Verification Leap Threshold TLV). The first BS 320 may receive an inactive request entry message from the MSS 350 and may transmit an inactive request information message to provide information pertaining to the MSS 350 requesting the inactive entry to a controller of location calls 370 (S32). Table 9 shows an information request message for example idle mode. [Table 9] With reference to Table 9, the inactive mode information request message may include information that a specific MSS has requested an inactive entry. The inactive mode information request message may also include an MSS MAC address, an MSS service flow information, and an information encoded by TLV (eg, Inactive Mode Hold Information TLV, Jump Threshold Verification of MAC TLV). The location controller 370 may receive the information request message inactive and may transmit an inactive mode information response message (e.g., Idle-Info-RSP) to the service BS, which is the first. .-- BS .-- 320 (.S33) -..- .., • Table 10 shows an example inactive mode information response message (Idle-Info-RSP) [Table 10] With reference to Table 10, the inactive mode information response message (Idle-Info-RSP) may preferably include information in the sense that the MSS 350 has entered an inactive mode, an MSS MAC address, a MSS service flow information, and information encoded by TLV (eg, TLV location information, TLV location controller ID, TLV inactive mode hold information, MAC TLV verification balance threshold). A second BS 330 may receive the inactive mode information response message (Idle-Info-RSP) and may transmit an inactive mode command message (e.g., DREG-CMD) to the MSS 350 (S34). The inactive mode command message may include information pertaining to a command to enter inactive mode, as well as information encoded by TLV (eg, TLV Location Information, TLV Location Controller ID, Inactive mode retention information TLV , MAC-verifying balance threshold "TLV-) -.- * In one mode, if the MSS 350 passes an area belonging to the second BS 330, which is part of another location group, ie, ID of location group = 2, then of MSS 350 can transmit a detection request message RNG_REQ including a transfer indicator TLV and a location controller ID TLV to the second BS 330 (S35) to notify the second BS 330 that the inactive mode will end. The second BS 330 may provide an idle mode information request message (e.g., Idle-Info-REQ) to the location controller 370 with a location controller ID received through the detection request message to notify the controller of location 370 that the MSS 350 has terminated the idle mode (S36). In addition, the second BS 330 may transmit a detection response message RNG_RSP to the MSS 350 (S37). The MSS 350 may also perform a network entry procedure based on the detection response message (S38). The location controller 370 may transmit an inactive mode information response message to all BSs belonging to the same location group as the first Bs 320, i.e. location group ID = 1, to notify the BSs that the MSS 350 has terminated the idle mode (S39). In response to the receipt of the inactive mode information response message, each BS in the location group ID = 1 may update a list of MSs currently in idle mode. Figure 4 is a diagram illustrating an inactive mode control in a wireless access system having a location controller, in accordance with a second embodiment of the present invention. With reference to Figure 4, when an MSS 450 attempts to enter an inactive mode, the MSS 450 can transmit a login request message to inactive mode (eg DREG-REQ) to a service Bs to which the MSS belongs. 450, as for example a first BS 420, to request an entry to inactive mode (S41). The DREG-REQ message may include information pertaining to a request for deregistration of the service BS to which the MSS 450 belongs (Deregistration request code), as well as information encoded by TLV (for example TLV Location Cycle Request, Inactive Mode Hold Information TLV, MAC TVL Check Leap Threshold). The first BS 420 may receive the inactive request entry message from the MSS 450 and may transmit an inactive mode information request message to provide information pertaining to the MSS 450 requesting the inactive mode entry to a controller. location 470 (S42). Table 9 shows an information request message of example Inactive Mode. The Inactive Mode Information Request message, As shown in Table 9, may preferably include information in the sense that a specific MSS has requested an inactive entry, an MSS MAC address, a service flow information of MSS, and information encoded by TLV (for example, Inactive mode retention information TLV, MAC verification threshold TLV). The location controller 470 can receive the message from. request information inactive and can transmit an information response message inactive mode (Idle-Info-RSP) to the service BS which is the first BS 420 (S43). Table 10 shows an example inactive mode information response message (Idle-Info-RSP). The inactive mode information response message (Idle-Info-RSP) as shown in Table-10, may preferably include information in the sense that the MSS 450 has entered an inactive mode, as well as an MSS MAC address, a service flow information. of MSS and information encoded by TLV (eg, TLV location information, TLV location controller ID, Inactive mode retention information (TLV, MAC verification TLV threshold) A second BS 430 can receive a inactive mode information response message (Idle-Info-RSP) and may transmit an inactive mode command message (DREG-CMD) to the MSS 450 (S44). The inactive mode command message may include information that belongs to a command to enter inactive mode as well as information encoded by TLV (eg, TLV location information, TLV location controller ID, Inactive mode retention information TLV, threshold verification threshold MAC TLV) In another embodiment, if the MSS 450 passes to an area belonging to the second BS 430 that is part of another location group, i.e. location group ID = 2, then the MSS 450 can transmit a message RNG_REQ detection request which preferably includes a TLV transfer indicator, a location controller ID TLV, and a location update request TLV to the second BS 430 (S45). The second BS 430 may transmit an idle information request message to the location controller 470 (S46). In addition, the location controller 470 can transmit an inactive mode information response message to all BSs belonging to the location group of the BS 420, i.e. location group ID = 1, to notify the BSs that MSS 450 has ended inactive mode (S49). In response to the receipt of the inactive mode information response message, each BS in location group ID = 1 may update a list of the MSSs currently in idle mode. Figure 5 is a diagram illustrating an inactive mode control in a wireless access system having a location controller, in accordance with a third embodiment of the present invention. With reference to Figure 5, when an MSS 550 tries to enter an inactive mode, the MSS 550 can transmit an inactive request entry message (DREG-REQ) to a service BS to which the MSS 550 belongs, as for example, a first BS 520, to request an entry to the inactive mode (S51). The DREG-REQ message may include information pertaining to a request for deregistration of the service BS to which the MSS 550 belongs (Deregistration request code), as well as information encoded by TLV (eg, Location Cycle Request TLV, Inactive Mode Hold Information TLV, MAC Verification Leap Threshold TLV). The first BS 520 may receive an inactive request entry message from the MSS 550 and may transmit an inactive request information message to provide information pertaining to the MSS 550 requesting the inactive entry to a controller of location 570 (S52). Table 9 shows an example of inactive mode information request message. The inactive mode information request message, as shown in Table 9, may preferably include information that a specific MSS has requested an entry to an inactive mode, an MSS MAC address, an MSS service flow information. , and information encoded by TLV (for example, TLV Inactive Mode Hold Information, MAC TLV Verification Leap Threshold). The location controller 570 may receive an information request message inactive and may transmit an inactive mode information response message (Idle-Info-RSP) to the service BS which is the first BS 520 (S53). Table 10 shows an example of inactive mode information response message (Idle-Info-RSP). The inactive mode information response message (Idle-Info-RSP), as shown in Table 10, may preferably include information that the MSS 550 has entered into an inactive mode, as well as an MSS MAC address, MSS service flow information, and information encoded by TLV (e.g. TLV Location, TLV Location Controller ID, TLV Inactive Mode Hold Information, MAC Verification Leap Threshold TLV). A second BS 530 may receive the inactive mode information response message (Idle-Info-RSP) and transmit an inactive mode command message (DREG-CMD) to the MSS 550 (S54). The inactive mode command message may include information pertaining to a command to enter inactive mode, as well as information encoded by TLV (eg, TLV Location Information, TLV Location Controller ID, Inactive Mode Hold Information TLV, Verification Leap Threshold of MAC TLV). In response to a detection request message, the second BS 530 may notify the MSS 550 that a location update procedure is requested through a detection response message. The MSS 550 can then perform a procedure for re-entering a network (S57). If the MSS 550 performs the network re-entry procedure, the second BS 530 can transmit an inactive mode information request message to the location controller 570 to notify the location controller 570 that the MSS 530 has re-entered the network (S58). In addition, the location controller 570 can transmit an inactive mode information response message to all BSs belonging to the location group of the first BS 520, i.e. location group ID = 1, to notify the BSs that the MSS 550 has terminated the idle mode (S59). In response to receiving the information response message inactive, each BS in the group ID location = 1 may update a list of MSSs currently in "idle mode" Figure 6 is a diagram illustrating the inactive mode control in a wireless access system having a location controller, in accordance with a fourth embodiment of the present invention With reference to figure 6, when an MSS 650 attempts to enter an inactive mode, the MSS 650 can transmit a message from requesting entry to inactive mode (DREG-REQ) to a service BS to which the MSS 650 belongs, such as the first BS 620 to request an entry to inactive mode (S61) .The DRE-REQ message may include information that pertains to a request for deregistration of the service BS to which the MSS 650 belongs (deregistration request code), as well as information encoded by TLV (for example, Localiza Cycle Request TLV, Inactive Mode Hold Information TLV, MAC Verification Leap Threshold TLV). The first BS 620 may receive the inactive request entry message from the MSS 650 and may transmit an inactive request information message in order to offer information pertaining to the MSS 650 requesting the inactive mode entry to a location controller 670 (S62). Table 9 shows an example of inactive mode information request message. The inactive mode information request message, as shown in Table 9, may preferably include information that a specific MSS has requested an entry to an inactive mode, an MSS MAC address, an MSS service flow information. , and information encoded by TLV (for example, TLV Inactive Mode Hold Information, MAC TLV Verification Leap Threshold). The location controller 670 may receive an information request message inactive and may transmit an inactive mode information response message (Idle-Info-RSP) to the service BS which is the first BS 620 (S63). Table 10 shows an example of information response message of an inactive mode (Idle-Info-RSP). The inactive mode information response message (Idle-Info-RSP), as shown in Table 10, may preferably include information that the MSS 650 has entered into an inactive mode, as well as an MSS MAC address, information of MSS service flow, and information encoded by TLV (eg, TLV Location Information, TLV Location Controller ID, TLV Inactive Mode Hold Information, MAC TLV Verification Leap Threshold). A second BS 630 may receive the inactive mode information response message (Idle-Info-RSP) and transmit an inactive mode command message (DREG-CMD) to the MSS 650 (S64). The inactive mode command message may include information pertaining to a command to enter inactive mode, as well as information encoded by TLV (eg, TLV Location Information, TLV Location Controller ID, Inactive Mode Hold Information TLV, Verification Leap Threshold of MAC TLV). In another embodiment, if the MSS 650 goes to an area belonging to the second BS 630, which is part of another location group, ie location group ID = 2, then the MSS 650 can transmit a request message of detection for a location update to the second BS 630 (S65). In the response to the detection request message, the second BS 630 may supply an inactive request request message to the location controller 670 to notify the location controller 670 that the MSS 650 has requested a location update (S66). If the location controller 670 can not perform a requested procedure for the location update, the location controller 670 may notify the second BS 630 that the requested location update procedure is not available through an inactive mode information response message (S67).

The second BS 630 may notify the MSS 650 that the location update procedure has failed through a detection response message (S68). The MSS 650 can then perform a procedure for re-entering a network based on the detection response message (S69). Once the re-entry to the network is finished, the second BS 630 can notify the location controller 670 that the procedure for re-entering the network has ended through an inactive mode information request message (S70). In addition, the location controller 670 can transmit an inactive mode information response message to all BSs belonging to the location group of the first BS 620, i.e. location group ID = 1, to notify the BSs that the MSS 650 has ended the idle mode (S69). In the response to the receipt of the inactive mode information response message, each BS in location group ID = 1 may update a list of MSSs currently in idle mode. In one embodiment, the method for controlling the idle mode between a mobile subscriber station and a network containing at least one service base station associated with a service location group and a white base station associated with a location group target, the method comprises requesting the entry to an inactive mode by the mobile subscriber station by transmitting a request inactive mode to the service base station having a service location group identifier with which the service base station is associated with and the service base identifier. The method also comprises entering inactive mode by receiving an inactive mode grant command from the service base station, and the inactive mode granting command comprising the service base session identifier and service identifier. service location group. The method also comprises initiating a detection request between the mobile subscriber station and the white base station associated with the target location group, wherein the detection request comprises the service base station identifier of the identifier and the service location group identifier. The method also comprises the connection to the white base station, wherein the service base station is informed, by using the service base session identifier, that the mobile subscriber station is not in the idle mode with the service base station. The network may further preferably comprise a location controller operatively connected to the service base station. The service base station identifier may be preferably replaced by a location controller identifier associated with the location controller. The detection request for the white base station may preferably also comprise a location update request. The method may further preferably comprise receiving the detection response from the white base station, wherein the detection response comprises a location update response. In another embodiment, the method for controlling an inactive mode between a mobile subscriber station and a network comprising at least one service base station associated with a service location group and a white base station associated with a location group blank, the method comprises receiving an inactive request from the mobile subscriber station to the service base station to enter an inactive mode by the mobile subscriber station, the service base station has a service location group identifier with which the service base station is associated and the service base identifier. The method also comprises • transmitting a granting command in an inactive mode to the mobile subscriber station from the service base station, the inactive mode grant command comprises the service base station identifier and the service location group identifier. The method also comprises receiving a connection request from the mobile subscriber station to the white base station associated with the white location group, wherein the connection request comprises the service base identifier and the group identifier of service location. The method also comprises the connection to the white base station, where the service base station is informed, by using the service base station identifier, that the mobile subscriber station is not in the idle mode with the service base station. The request for connection to the white base station may preferably also comprise a location update request. The method may further preferably comprise transmitting an inactive mode information request message to the location controller, receiving an inactive mode information response from the location controller, and transmitting a detection response to the location controller. mobile subscriber station. The location controller may preferably inform the service base station and other base stations associated with the service location group that the mobile subscriber station is not in the idle mode with the service base station. The location controller 'may preferably inform the white base station and other base stations associated with the white location group that the mobile subscriber station has re-entered the idle mode with the white base station. Accordingly, when controlling an idle mode of a mobile subscriber station in a wireless access system in accordance with the present invention, if the MSS in idle mode deviates from a location zone, the idle mode for the location zone prior can be efficiently finished. Thus, the present invention can avoid unnecessary traffic. Furthermore, the present invention can offer efficient control inactive mode using a location controller. It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is contemplated that the present invention encompass the modifications or variations of this invention provided they fall within the appended claims and their equivalents. INDUSTRIAL EXPLOITATION The present invention can be applied to a wireless communication system that includes a broadband wireless access system with various effects,

Claims (20)

1. CLAIMS A method for controlling the idle mode between a mobile subscriber station and a network comprising at least one service base station associated with a service location group and a white base station associated with a white location group, the method comprises: requesting to enter an inactive mode by the mobile subscriber station by transmitting an inactive request to the service base station having a service location group identifier with which the base station service is associated and the service base station identifier; entering the idle mode by receiving an inactive mode grant command from the service base station, the granting command from the inactive mode comprises the service base station identifier and the service location group identifier; initiating a detection request between the mobile subscriber station and the white base station associated with the target location group, wherein the detection request comprises the service base station identifier and the service location group identifier; and connecting to the white base station, wherein the service base station is informed, by using the service base station identifier, that the mobile subscriber station is not in idle mode with the base station of service.
2. The method according to claim 1, wherein the network further comprises a location controller operatively connected to the service base station.
3. The method according to claim 2, wherein the service base station identifier is replaced with a location controller identifier associated with the location controller.
4. The method according to claim 1, wherein the detection request to the white base station further comprises a location update request.
5. The method according to claim 4, further comprising: receiving a detection response from the white base station, wherein the detection response comprises a location update response.
6. A method for controlling an inactive mode between a mobile subscriber station and a network comprising at least one service base station associated with a service location group and a white base station associated with the target location group, the method comprises: receiving an idle mode request from the mobile subscriber station to the service base station to enter the idle mode by the mobile subscriber station, the service base station has a service location group identifier with which the service base station is associated with and the service base station identifier; transmitting a granting command in an inactive mode to the mobile subscriber station from the service base station, the granting command in the inactive mode comprises the service base station identifier and the service location group identifier; receiving a connection request from the mobile subscriber station to the white base station associated with the target location group, wherein the connection request comprises the service base station identifier and the location group identifier of service; and connecting to the white base station, where the service base station is informed, by using the service base station identifier ', that the mobile subscriber station is not in idle mode with the base station of service.
7. The method according to claim 6, wherein the network further comprises a location controller operatively connected to the service base station.
8. The method according to claim 7, wherein the service base station identifier is replaced with a location controller identifier associated with the location controller.
9. The method according to claim 6, wherein the connection request to the white base station further comprises a location update request.
10. The method according to claim 9, further comprising: transmitting an information request message inactive to the location controller; receive an inactive mode information response from the location controller; and transmitting a detection response to the mobile subscriber station.
11. The method according to claim 9, further comprising: transmitting a detection response to the mobile subscriber station.
12. The method according to claim 7, wherein the location controller informs the service base station and other base stations associated with the service location group that the mobile subscriber station is not in the mode inactive with the service base station.
13. The method according to claim 7, wherein the location controller informs the white base station and other base stations • associated with the target location group that the mobile subscriber station re-entered the inactive mode with the station of white base.
14. 14. A mobile subscriber station for controlling the idle mode with a network comprising a service base station associated with a service location group and a white base station associated with a target location group, the mobile subscriber station comprises: means for requesting to enter an inactive mode by the mobile subscriber station by transmitting an inactive request to the service base station having a service location group identifier with which the base station of service is associated and the service base station identifier; means to enter inactive mode by receiving an inactive mode grant command from the service base station, the inactive mode grant command comprises the service base station identifier and the location group identifier of service; means for initiating a detection request between the mobile subscriber station and the white base station associated with the target location group, wherein the detection request comprises the service base station identifier and the location group identifier service; and means for connecting to the white base station, wherein the service base station is informed, by using the service base station identifier, that the mobile subscriber station is not in the idle mode with the subscriber station. service base.
15. 15. The mobile subscriber station according to claim 14, wherein the network further comprises a location controller operatively connected to the service base station.
16. 16. The mobile subscriber station according to claim 15, wherein the service base station identifier is replaced with a location controller identifier associated with the location controller.
17. 17. The mobile subscriber station according to claim 14, wherein the detection request to the white base station further comprises a location update request.
18. 18. A network with a mobile subscriber station, the network comprises at least one service base station associated with a service location group and a white base station associated with a white location group, the network comprising: means for receiving an inactive request from the mobile subscriber station to the service base station to enter an inactive mode by the mobile subscriber station, the service base station has a service location group identifier with which the service base station is associated and the service base station identifier for transmitting an inactive mode granting command to the mobile subscriber station from the service base station, the granting mode command inactive includes the service base station identifier and the service location group identifier to receive a request connection point from the mobile subscriber station to the white base station associated with the white location group, wherein the connection request comprises the service base station identifier and the location group identifier; and means for connecting to the white base station, wherein the service base station is informed, by using the service base station identifier, that the mobile subscriber station is not in the idle mode with the subscriber station. service base. The network according to claim 18, wherein the network further comprises a location controller operatively connected to the service base station. The network according to claim 19, wherein the service base station identifier is replaced with a location controller identifier associated with the location controller. The network according to claim 18, wherein the connection request to the white base station further comprises a location update request. The network according to claim 19, wherein the location controller informs the service base station and other base stations associated with the service location group that the mobile subscriber station is not in the idle mode with the service base station. The network according to claim 19, wherein the location controller informs the white base station and other base stations associated with the white location group that the mobile subscriber station re-enters the idle mode with the white base station .