MXPA06014186A - Supporting idle mode of mobile station in wireless access system - Google Patents

Abstract

A method of supporting a mobile station that is in an idle mode in a wireless communication system using a paging controller comprises entering an idle mode by a mobile station, receiving a paging command from a base station in the same paging group, the paging command comprising a paging command action code associated with performing ranging while the mobile station is in the idle mode to verify availability of the mobile station with respect to at least one of the base stations in the paging group, wherein the paging command is generated from the base station in response to a paging announcement from the paging controller, and exiting the idle mode and establishing communication with one of the plurality of base stations, wherein the plurality of base stations in the same paging group receive an idle mode exist status from the paging controller.

Description

MOBILE STATION INACTIVE MODE SUPPORT IN WIRELESS ACCESS SYSTEM Description TECHNICAL FIELD The present invention relates generally to a wireless access system and, more particularly, to the idle mode of a mobile station in a wireless access system. PREVIOUS BRANCH Broadband inactive access systems typically support an idle mode to minimize the power consumption of a mobile subscriber station (MSS). During idle mode, the MSS does not perform a delivery procedure when moving between base stations in the same calling zone. Therefore, the MSS does not need to transmit uplink information for the delivery procedure, which reduces the corresponding power consumption. A calling zone is defined as an area that is controlled by a plurality of base stations called a calling group. Each of the base stations in the call group has the same call cycle (Call_Cycle) and the same call diversion (Call_Distance). The MSS can make a request to a station. of base to switch to inactive mode. The base station then provides a call message that includes its call group ID, a corresponding call cycle, and a corresponding call diversion. The corresponding MSS in this way can be switched to the inactive mode. During the idle mode, the MSS may determine whether to continue or terminate the idle mode based on the call message provided by the base station in each call cycle. If traffic needs to be transmitted through the MSS while it is in the idle mode, the MSS may terminate the idle mode. For example, the MSS can be trained to terminate the inactive mode by the BS. In addition, if the MSS moves to another calling zone or loses its synchronization while it is in an idle mode and is unable to receive a call at a previously defined time, the MSS may terminate the idle mode. When the MSS is in the idle mode, the MSS normally receives a periodic call to ensure its free movement in the same call zone without performing the delivery procedure. When configuring a call zone, a structure message (action-group-call) is transferred by wire between the base stations. A sample flame-group-action structure message is shown in Table 1. Table 1 Size Size Notes Type of Message 8 bits BS sender ID 48 bits Unique identifier of base station (Same number as that broadcast in DL-MAP message) Meta BS ID 48 bits Unique identifier of base station ( Same number as that diffused in the DL-MAP message) 32-bit Time Stamp Number of milliseconds from midnight GMT (set to OxTTTTTTT to ignore) Action 4 bits Assign target BS to call groups Remove target BS from groups of Call Question (to which BS of call group goals does it belong?) Information (BS sent from call groups belongs to) Number records 4 bits Number of call records-group-ID For (j = 0; j <Num Records; j ++). { Call-group_ID 16 bits Call group ID CALL CYCLE 16 bits Cycle in which the call message is transmitted within the call group CALL DEFLECTION 8 bits MSS CALL DEVIATION parameter} TBD Security Field A means to authenticate this message 32-bit IEEE CRC-32 CRC Field The call-group-action structure message communicates between the base stations. The call-group-action structure message can be used for four purposes based on the contents of an action field (Action). A receiving base station (target BS) can be assigned (designated) to a specific call group (Action = 0). Alternatively, the target BS is can exclude from the specific call group (Action = l). Alternatively, the target BS may be questioned with respect to the call group to which the target BS belongs (Action = 2). Alternatively, the target BS may be informed of the call group to which a transmission base station (sending BS) belongs (Action = 3). Since a single base station may belong to one or more call zones, the call structure-group-action message may contain information pertaining to a multitude of call groups. Base stations can report the call and diversion cycle used in each call zone through the call structure-group-action message. In addition, the base stations can be assigned dynamically to the call groups through the call structure-group-action message. When switching an MSS to an inactive mode, a DREG_REQ message (one of the previous MAC messages) is used. A DREG_REQ message format is shown in Table 2. Table 2 Syntax Size Notes DREG-REQ Format_Frame (). { Operation 8 bits Message type = 29 Deregistration 8 bits 0x00 = SS request Request code for deregistration of BS and network 0x01 = request for deregistration of MSS of BS Servidora and invitation for call of Availability mode 0x02-0xFF = reserved 16-bit Cycle Request Only valid if the Call Deregistration Request Code = 0x01 Variable parameters of the TLV} An MSS may send a request to a serving base station that the MSS shall be switched to idle mode by setting a Deregistration Request Code of the DREG_REQ message to 0x01 and then delivering the DREG_REQ message to the base station. This allows the delivery of a specific call cycle. The serving base station receives the DREG_RE message and can respond to the request by the MSS through a conventional DREG_CMD message. A format of the DREG CMD message is shown in Table 3.

Table 3 Syntax Size Notes DREG-CMD_Mensaj e_Format (). { Type of Operation Message = 29 8 bits Action Code 8 bits Variable parameters of TLV} The server base station can allow switching to inactive mode through an action code (Action code = 0x05). Alternatively, the serving base station may allow the MSS to make the request for switching to idle mode after a duration of time (Action code = 0x06). Alternatively, the serving base station may not allow the MSS to make the request for switching to the idle mode but until the serving base station transmits the DREG_CMD message (action code = 0x07). The details of the action code of the DREG_CMD message are shown in Table 4. Table 4 Action Action Code 0x00 SS will leave the current channel and try to access another channel 0x01 SS will listen to the current channel but will not transmit until a message RES_CMD or DREG_CMD with Action Code 0x00 is received. 0X02 SS will listen to the current channel but will only transmit in 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 current Normal Operations with the BS: the BS will transmit this action code only in response to any SS DREG_REQ. 0X05 MSS request for deregistration of the BS Server and MSS start request inactive mode. 0x06 The MSS can retransmit the DREG_REQ message after the time duration (duration-REQ) provided by. 0x07 The MSS will not retransmit the DREG_REQ message and wait for the DREG-CMD message. 0x08 Reserved OxFF The base stations belonging to the same call zone may be able to share the information belonging to the switched MSS to the inactive mode. Using this information, the serving BS can notify the MSS of procedures to execute in each call cycle. A call announcement structure message is shown in Table 5. Table 5 Field Size Notes Type of message 8 bits BS ID Sender 48 bits Unique identifier of base station (Same number as that broadcast in message DL-MAP) BS 48-bit Meta ID Set to Oxffffff to ignore 32-bit Time Stamp Number of milliseconds from midnight GMT (set to Oxffffffff to ignore) MSS Num 8 bits Number of MSSs to call For (j = 0 <Num MSS; j ++). { Address MSS MAC 48 bits CYCLE_CALAMED 16 bits MSS CALL CYCLE parameter CALL DEVIATION 8 bits MSS CALL DEVIATION parameter} TBD Security Field A means to authenticate this message 32-bit IEEE CRC-32 CRD field The call announcement structure message can be delivered to all base stations belonging to the same call zone. The base stations receiving the call announcement structure message make the call by matching the MAC addresses of MSSs included in the message with the call and diversion cycle within the message. Consequently, due to the call announcement structure message, all base stations belonging to a specific call zone can maintain identical MAC addresses of MSSs to call. In this way, a specific MSS can receive its call information in each call cycle unless the MSS leaves (deviates from) a current call zone. A format of a call message MOB_PAG_ACV transmitted to MSSs in the idle mode via call for each base station is shown in Table 6.

Call message is delivered to MSSs in a broadcast format. Table 6 Field Size Notes MOB PAG-ADV Message_Format (). { Operation 8 bits Message Type = ?? Group Num_Call 8 bits Number of IDS Group IDs Call in this message For (i = 0); KNum_Call_Group_ ID s; I). { ID Group 8 bits} For (j =; j <Num The number of MSS Addresses _MACs; j ++). { Message MAC can be determined from the length of the message (found in the generic MAC header) Address MSS MAC 24 bits The copy is obtained by copying a CRC2 in the MSS 48-bit MAC address. The polynomial for calculation is 0x864CFB Action Code 2 bits MSS call action structure 00 = None Action Required 01 = Perform Classification to establish location and acknowledge message 10 = Enter Network 11 = Reserved Reserved 6 bits} } The MSS receives the call message and can decide whether to keep the idle mode continuously (Action Code = 00), whether to perform classification to establish an update of location information (Action Code = 01), and / or to terminate the mode inactive and receive downlink traffic (Action Code = 10). The MSS may terminate the idle mode if the MSS needs to transmit traffic (occurrence of uplink traffic). The MSS may also terminate the idle mode if the MSS needs to receive traffic (occurrence of downlink traffic). The MSS may also terminate the idle mode if the MSS is unable to receive a periodic call due to deviation from an area of current call or due to a transmission problem. EXPOSITION OF THE INVENTION The present invention is directed to supporting an inactive mode of a mobile station in a wireless access system that substantially avoids one or more problems of the related branch. An object of the present invention is to provide support for an idle mode of a mobile subscriber station (MSS) in a broadband wireless access system, in which the actions taken by the MSSs in the idle mode minimize the consumption The power of the wireless access system is indicated and through which an accurate operation of the inactive mode can be ensured. Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those who have ordinary experience in the field after an examination of the following or can be learned from the practice of the invention. . The objects and other advantages of the invention can be realized and achieved by the structure particularly noted in the written description and claims hereof as well as the accompanying drawings. To achieve these objects and other advantages and In accordance with the purpose of the invention, as modalized and broadly described herein, in one embodiment, a method for supporting a mobile station that is in an inactive mode in a wireless communication system using a call controller comprises entering an inactive mode by a mobile station. The method also comprises receiving a call command from at least one of the plurality of base stations in the same call group, the call order comprising a call control action code with classification realization while the mobile station is in idle mode to check the availability of the mobile station with respect to at least one of the base stations in the call group, wherein the call control is generated from at least one of the plurality of base stations in response to a call announcement of the call controller. The method also comprises leaving the idle mode and establishing communication with one of the plurality of base stations, wherein the plurality of base stations in the same call group receive an inactive state of existence from the call controller. The preferred call announcement can be generated from the call controller when there is downlink traffic data to be delivered to the station mobile. Alternatively, the preferred call announcement may be generated from the call controller when there is uplink traffic data from the mobile station. The preferably inactive mode response control may comprise at least one of the call identifier, a call cycle and a call cycle deviation. The step of leaving the idle mode and establishing preferential communication further comprises transmitting a classification request to one of the plurality of base stations with which the mobile station is associated and receiving a classification response from one of the plurality of subscriber stations. base. The preferred call announcement may comprise a call announcement action code comprising at least one of (1) adding the mobile station to a call list; (2) remove the mobile station from the call list; (3) perform classification to establish location; and (4) enter the network; and (2) perform classification to establish location. The step of entering the inactive mode of preference may further comprise requesting a serving base station by a mobile station to enter an inactive mode, wherein the mobile base station is associated with a call controller, the call controller controlling a plurality of base stations associated with a calling group. The step of entering the idle mode can also preferably further comprise receiving an idle mode response command from the server base station to enter the idle mode. The call controller can preferably be identified with a call controller identifier and the mobile station is identified with a media access control (MAC) identifier. The preferred call control may comprise information identifying the mobile station using the MAC identifier. The preferred call announcement may comprise information identifying the mobile station using the MAC identifier. The step of entering the idle mode by the mobile station may preferably further comprise the call controller which reports an inactive mode input state of the. mobile station to the plurality of base stations in the calling group. In another embodiment, a method for supporting an idle mode for a network in a wireless communication system using a call controller comprises receiving a request from a mobile station to a serving base station to enter an idle mode, wherein the server base station is associated with a call controller, the call controller controlling a plurality of base stations associated with a calling group. The method also comprises transmitting from the serving base station to the mobile station an inactive mode response command to enter the inactive mode. The method also comprises transmitting a call control of at least one of the plurality of base stations in the same call group, the call control comprising a call action action code associated with performing classification while the mobile station is in inactive mode for verifying the availability of the mobile station with respect to at least one of the base stations in the call group, wherein the call control is generated from at least one of the plurality of base stations in response to a call announcement from the call controller. The method also comprises establishing communication between one of the plurality of base stations and the mobile station. The method also comprises transmitting an inactive state of existence of the call controller to the plurality of base stations in the same call group. The method may also preferably comprise transmitting an idle mode information request message from the serving base station to the call controller to provide information pertaining to the mobile station. The method can also comprise of preferably receiving in the call controller the inactive mode information request message of the serving base station. The method may also preferably comprise transmitting from the call controller at least one of the plurality of base stations an inactive mode information response message if the inactive mode information request message comprises information pertaining to a threshold of Signal Jump of the Medium Access Controller (MAC). The method may also preferably comprise receiving in the call controller the inactive mode information request message from the serving base station and transmitting an inactive mode information response message from the call controller to the serving base station. The inactive mode information response message may also preferably be transmitted to the at least one of the plurality of base stations and may preferably comprise information to notify the at least one of the plurality of base stations that the station Mobile has ended inactive mode. The method also preferably may comprise transmitting from the serving base station to the mobile station an inactive mode command message in response to the inactive mode information response message.

The foregoing and other objects, 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 should be understood that both the above general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated into and constitute 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 block diagram illustrating a call group, in accordance with one embodiment of the present invention. Figure 2 is a flow chart illustrating an inactive mode procedure, in accordance with one embodiment of the present invention. Figure 3 is a diagram illustrating a procedure for terminating an idle mode when the downlink traffic is to be transferred to a mobile station, in accordance with one embodiment of the present invention. Figure 4 is a block diagram illustrating a wireless access system having a call controller, in accordance with one embodiment of the present invention. Figure 5 is a diagram illustrating a method for managing base stations within a call group using a call controller, in accordance with an embodiment of the present invention. Figure 6 is a diagram illustrating an inactive mode startup procedure in a wireless access system having a call controller, in accordance with one embodiment of the present invention. Figure 7 is a flow diagram illustrating an occurrence of traffic in a mobile station in an idle mode, in a wireless access system having a call controller, in accordance with an embodiment of the present invention. BEST MODE FOR CARRYING OUT 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. Whenever possible, the same reference numbers will be used throughout the drawings to refer to parts same or similar. 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 1 is a block diagram illustrating a call group, in accordance with one embodiment of the present invention. Referring to Figure 1, a call group includes at least one base station (BS). The BS or BSs each belonging to the same call group can transmit and / or receive information necessary for inactive mode in a mobile station (MS) through structure messages. A mobile station is also known as a mobile subscriber station (MSS). Alternatively, the information necessary for the idle mode in an MS can be transmitted and / or received between BSs belonging to different call groups through structure messages. Figure 2 is a flow chart illustrating an inactive mode procedure, in accordance with one embodiment of the present invention. Referring to Figure 2, to allow an MSS to enter an inactive mode, a switching of the preferably inactive mode can be requested from a base station using a registration request message, such as, for example, a DREG_REQ message as a medium access controller (MAC) message (S21). An exemplary format of the DREG_REQ message is shown in Table 2. The MSS may preferably request a base station that the MSS enter idle mode by setting a Deregistration Request Code of the message DREG_REQ to 0x01, for example. The MSS can then deliver the DREG_REQ message to the base station. The base station receiving the DREG_REQ message (receiving base station) can preferably respond to the request of the MSS through a command message, such as for example a message DREG_CMD (S22). An example format of the DREG_REQ message is shown in Table 3. The receiving base station may preferably allow the MSS to enter the idle mode through an action code (eg, Action Code = 0x05) . Alternatively, the receiving base station of preference may allow the MSS to request to enter the idle mode after a specified duration of time through another action code (e.g., Action Code = 0x06). Alternatively, the station The receiving base may not allow the MSS to request to enter the inactive mode until the receiving base station transmits the DREG_CMD message through another action code (eg, Action Code = 0x07). The sample details of codes from. action pertaining to the DREG_CMD message are shown in Table 4. In one embodiment, the base stations belonging to the same call area of preference may be able to share information belonging to the MSSs that have entered the inactive mode. Using this information, the base stations can preferably notify the MSSs of which procedure the MSSs need to execute in each call cycle. In order to share information among the BSs, a structure message, such as, for example, a call announcement structure message as shown in Table 5 can be used. The preferred call announcement structure message can be delivered to all base stations belonging to the same call zone (S23). In another embodiment, an action code may be added to the call announcement structure message for use in instructing the MSSs of the necessary actions to be taken while in the idle mode. In this way, as in the example of Table 7 below, the? Num MSS ', the' MSS MAC address, the 'CALL CYCLE, and the' CALL DEFLECTION ', as well as other fields of the call announcement structure message, may be altered in comparison with those shown in Table 5 above. An example call announcement structure message with an action code added to instruct the MSSs is shown in Table 7 below. Table 7 Num MSS 8 bits Number of MSSs needing an action For (j = 0; J <Num MSS; j ++ =). { 48-bit address MSS MAC Action code 3 bits 0 = Add the MSS to the call list 1 = Delete the MSS from the call list 2 = Perform classification to establish location and knowledge message 3 = Enter to Network 4 = Reserved 5 bits Pre-ordered In yet another mode, the fields of? CALL_CLOCK (16 bits) 'and? CALL_DRAW (8 bits) (' may be removed from the call announcement structure message, as shown in Table 7 above, because each of the base stations belonging to the same call zone has the same call diversion and call cycle, in this way, instead of call cycle and call diversion fields, an action code (e.g. 3 bit action code) can be added to the call announcement structure message to indicate that a MAC address associated with a specific MSS has been added to the call list through an action code (eg., Action Code = 0). Alternatively, the action code can indicate that a MAC address of a specific MSS has been removed from the call list through another action code (eg, Action Code = l). Alternatively, the action code may indicate that the classification has been made for an update of location information (eg, Action Code = 2). Alternatively, the action code may indicate that a procedure for re-registering to a network has been executed after terminating the inactive mode (eg, Action Code = 3). An example format of a call message, such as a message MOB_PAG_ADV, transmitted to the MSSs in The inactive mode of each of the base stations via call is shown in Table 6. The preferred call message can be transmitted to the MSS in a broadcast format. The MSS can receive the call message and determine (decide) whether to keep the idle mode continuously using an action code (eg, Action Code = 00), if to perform classification to establish an update of location information (v. .gr., Action Code = 01), and / or terminate the idle mode to receive downlink traffic (eg, Action Code = 10). A preferred serving base station may allow a specific MSS to enter an inactive mode and set an action code of the call announcement structure message to 0, for example, and then transmit the call announcement structure message to all base stations in the call zone of the serving base station (S23). Each of the base stations in the calling area may receive the call announcement structure message and may store the MAC address of the corresponding MSS in a call list. The base stations can then transmit the MAC address through the call message MOB-PAG_ADV in each call cycle (S24). The MSS can receive the call and call message preference can determine keep inactive mode. By doing so, the radio resources may be retained by including the MAC address of the MSS that needs a specific action such as a new registration to a network or a classification for an update of location information in the call message. To include the MAC address, the fields of 'MSS MAC Address signal and' Action Code 'of the call message MOB-PAG_ADV in Table 6 can preferably be changed to match those in Table 8, for example. Table 8 For (j = 9; j-Num_MACs; j +++). { 24-bit address signal from MASS MAC Action Code 2 bits 00 = Enter Network 01 = Perform Classification to establish location and knowledge message 10-11 = reserved If an MSS is forced to terminate the inactive mode due to a traffic occurrence of downlink, a respective base station may ignore that the corresponding MSS belongs to a domain within the call zone of the respective base station. The respective base station, therefore, can adjust the action code of the call announcement structure message to 3, for example, and then transfer the call announcement structure message to other base stations in the same call zone. call. The other base stations in the call zone of the respective base station can receive the call announcement structure message and adjust the action code of the call message to 00, for example. The other base stations can then transmit the call message to all the MSSs in the calling zone to allow the corresponding MSS to end its idle mode and execute the procedure for the new network registration. After MSS has normally terminated its inactive mode, the respective base station may adjust the action code of the call announcement structure message to 1, for example, and may then deliver the call announcement structure message to the subscribers. other base stations in the calling area. Therefore, the call for the corresponding MSS can preferably be stopped. Figure 3 is a diagram illustrating a procedure for terminating an idle mode when downlink traffic is to be transferred to a station mobile, in accordance with one embodiment of the present invention. Referring to Figure 3, because a base station may be ignorant of the domain to which an MSS belongs in an inactive mode, a downlink traffic may preferably be delivered unconditionally to the base station (first base station) or initial base station) to which the MSS initially requested a change to inactive mode. After the MSS was allowed to enter inactive mode by the first base station receives the downlink traffic, the first base station can set an action code, belonging to all the base stations in the call zone of the first base station, to 11, for example. The first base station can then transmit a call announcement structure message (S31). Each of the base stations in the call zone of the first base station can receive the call announcement message and set an action code of the call message MOV_PAG_ADV to 10, for example. The base stations can then transmit the call message to all the MSSs in the calling area in a broadcast format (S32). The corresponding MSS can receive the message call and end inactive mode. The MSS may also request a second base station (current base station) that is in charge of the calling zone to which the MSS belongs, a new network register (S33). The second base station may preferably make known a base station ID of the first base station through the call announcement message. The second base station can receive the request for new registration and adjust an action flag of a structure message MSS_Info_Request to 1, for example. The structure message MSS_Info_Request preferably can be transferred between the base stations per wire. The second base station can then transmit the structure message MSS_Info_Request to the first base station to notify the first base station that the MSS has left the call zone (S34). An example format of the structure message MSS_Info_Request is shown in Table 9. Table 9 Field Size Notes Global Header 152 bits For (j = 0; j <Num Records; j ++). { 48-bit identifier Unique 48-bit identifier of MSS bits used by MSS (as provided by the MSS or by the I-guest-message of) 8-bit action flag Request for information MSS arrived from idle mode MSS made transition to another group call Security Field TBD A means for authenticating this message The first base station can receive the structure message of MSS_Info_Request and can notify all base stations within the calling zone of the first base station that the MSS has finished the inactive mode and it will be omitted from the call lists of the respective base stations. The first base station can preferably transmit the traffic of the MSS through the data delivery message having a format shown in Table 10, for example. Table 10 Field Size Notes Global Header 152 bits Length 8 bits The length in bytes of the MAC SDU including Global Header, MSS unique identifier, and 48-bit Identified Security Field Single unique 48-bit identifier of MSS bits used by MSS at network entry MAC SDU variable Data received Security Field TBD One means to authenticate this message Except when MSS is forced to terminate its idle mode due to downlink traffic, if the idle mode of the MSS needs to be terminated, the MSS can preferably perform an idle mode termination procedure not after the first base station requests the termination of the inactive mode to the MSS through call. When the base station receives the request for new registration to the network of the MSS after completing the termination of the inactive mode of the MSS, the BS may adjust the action code of the call announcement structure message to 1, for example . The base station can then transfer the call announcement structure message to all base stations belonging to the call zone of the corresponding base station, so that the corresponding MSS can be deleted from the base station. the respective call lists. Figure 4 is a block diagram illustrating a wireless access system having a call controller, in accordance with one embodiment of the present invention. Referring to Figure 4, a call controller performs an idle mode control for an MSS in the base stations of one or more call groups transmitting and / or receiving the information necessary for an idle and / or the base stations. That is, the transmission and / or reception of the necessary information for an inactive mode to offer can be made between the base stations through the call controller. The call controller may be provided with a specific base station or may be provided separately from the base station. Figure 5 is a diagram illustrating a procedure for handling base stations within a call group using a call controller, in accordance with one embodiment of the present invention. Referring to Figure 5, the call controller can control the base stations belonging to each call group using a structure message. For example, using an action code of a group action request structure message of call, the call controller can assign a base station to a call group (eg, Action Code = 0000), remove a base station from a specific call group (e.g., Action Code = 0001), request call information from a corresponding base station (eg, Action Code = 0010), or report call information from another base station (eg, Action Code = 0011) ( S51). An example call group action request message is shown in Table 11. Table 11 Field Size Notes Message Type = 8 bits 48-bit Sender ID Call Controller Identifier or BS sending this message Time Stamp 32 Action Code 4 bits 0000: Assign BS of Goal to Call Groups 0001: Remove BS of Goal of Call Groups 0010: Question (Call Information of the Receiving BS) 0100-1111: reserved Yes (Action Code = 0000 or 0001) í Registers Num 4 bits Number of call group IDs associated with receiver Para (i = 0; j <Num Registers; i +++). { 32-bit information 0-7: Call Group ID; Call 8-23: Call Cycle, 24-31: Call Deviation Or Yes (Action Code = 0010). { Reserved 4 bits Will be set to zero Or Yes (Action Code = 0011). { BSs Num 4 bits Num of BSs asked For (j = 0; j <Num BSs; j ++). { BS ID Asked 48 bits Base Station Identifier from which Call Information is included Num 48-bit Registers Number of Call Group IDs associated with BS Asked For (k = 0; k <Num Registers; k ++). { 32-bit information 0-7: Call group ID, Call 8-23: Call Cycle, 24-31: Call Deviation TBD Security Field A means to authenticate this message A base station that receives a call group request request message can preferably transmit the necessary information to an inactive mode using the action codes of a group action response message call. The call group action response message may be transferred to the call controller by the base station that received the call group action request message (S52). For example, the base station may transmit a response to the call group action request message to add the BS to or remove the BS from the call group (e.g., Action Code = 0000). He Call group action response message may also be transmitted in order to offer its call information (eg, Action code = 0001), or to request call information from another base station (eg, Action Code = 0010). An example call group action response message is shown in Table 12. Table 12 Field Size Notes Type of Message 8 bits Sender ID 48 bits Base Station Identifier by sending this message Receiver ID 48 bits Caller Controller Identifier receiving this message Time stamp 32 bits Action code 4 bits 0000: confirm the assignment to or removal of the call group 0001: Information (Call Information of BS Sender) 0010: Question (Information of Call of another BS) 0100-1111: reserved Yes (Action Code = 0000). { Reserved 4 bits Will be set to zero} Or Yes (Action Code = 0001). { Num 4-bit Registers Number of Call Group IDs associated with BS Sender For (i = 0; j <Num Registers; i ++). { Call Information 32 bits 0-7: Call Group ID; 8-23: Call Cycle, 24-31: Call Deviation . { Or else (Action Code = 0010). { Num BSs 4 bits Number of BSs of which it is desired to know the BS Call Information Envoy For (j = 0; j <Num BSs; j ++). { BS ID Asked 48 bits Base Station Identifier from which Call Information is included 1 TBD Security Field A means to authenticate this message Figure 6 is a diagram illustrating an inactive mode startup procedure in a wireless access system having a call controller, in accordance with one embodiment of the present invention. Referring to Figure 6, when an MSS intends to enter an inactive mode, the MSS can transmit an inactive request entry message (e.g., DREG-REQ) to a BS to which the MSS belongs to. request an inactive mode entry (S61). The DREG-REQ message may include information pertaining to a request for deregistration of the BS to which the MSS belongs (eg, deregistration request code) and TLV encoded information (eg, Cycle Request). Call TLV, Inactive Mode Hold Information TLV, TLV Signal Hopping threshold MAC). The serving BS may receive the entry request message in inactive mode and transmit an information request message inactive mode (e.g., Inactive-Info_REQ) to provide information pertaining to the MSS requesting the inactive mode input to the call controller (S62). Table 13 shows an information request message of example idle mode. Table 13 Field Size Notes Inactive Message-Info-REQ format (). { 12-bit Header Global Message. For (i? 0; i < Num Registros; i +++). { MSS address MAC 48 bits Action code 4 bits 0000: Request to start inactive mode 0001: Traffic DL has reached MSS 0010: Session information of MSS 0011: Full reentry of MSS 0100: MSS has already transitioned to another call group 0101-1111: reserved Reserved 4 bits TLV information Coded variable Num_SFID_Registros 8 bits For (i = l; i <Num_ SFID_Registros; í ++ 0). { SFID 32 bits Num_QoS_Registros 8 bits For (i = l; i <Num_ QoS_Registros; i ++) TLV variable information 11.13 Encoding encodings handling of service flow } } TBD Security Field A means to authenticate this message Name Type Length Value Information 4 0-7: Call Group ID Call 8-23: Call Cycle 24-31: Call Deviation Controller ID - Network Identifier Logical Call for server BS or other entity network that retains MSS Service and operation information and / or manage call activity for the MSS while in Idle Mode Variable information The first 8 bits of Hold Mode this article indicate Inactive Inactive Mode Hold Information included in the DREG-CMD message, and the rest are MSS service and operating information associated with Inactive Mode Hold Information. This article can be included in the Inactive-Info-REQ message with the Action Code = 0000 Jump Threshold 1 Maximum number that BS Signal MAC is allowed to skip MSS MAC address signal from an MSS in successive messages from MOB_PAG-ADV when an Action Code for the MSS is 00, 'No Action Required'. The unit is the number of message transmissions MOB_PAG-ADV HO flag of 1 This item can be optimized to include in Inactive-Info-REQ message with Action Code = 0011. Referring to Figure 13, this inactive mode information request message may preferably include information that a specific MSS has requested an inactive mode entry, a MAC MSS address, MSS service flow information, and coded information TLV (e.g., TLV Inactive Mode Hold Information, TLV Signal Leap TLV). The call controller may receive the information request message inactive and transmit an information response message so inactive (eg, Inactive-Info-RSP) to the BS that transmitted the information request message inactive mode (S63). If the inactive mode information request message transmitted from the serving BS includes information pertaining to the MAC Signal Leap Threshold, the call controller preferably can transmit the information response message inactive to all BSs belonging to the group. Call (S65). Table 14 shows an example inactive mode information response message (Inactive-Info-RSP). Table 14 Field Size Notes Message Format Inactive-Info-RSP () [152-bit Header Global Message For (i = 0; KNum Records; i ++). { Address MSS MAC 48 bits Action Code 4 bits 0000: MSS enters Sleep Mode 0001: MSS exits Sleep Mode 0010: MSS information from session 0011: Delivery of Traffic DL to BS of Current Fixation 0100-1111: reserved Reserved 4 bits TLV encoded variable information For (i = l; KNum_SIF_Registros I ++). { SFID 32 bits Num_Qos_Registros 8 bits For (i = l; < Num_QoS_Registros; i ++) TLV variable information 11.13 Encoding encodings handling of service flow TBD Security Field A means to authenticate this message Name Type Length Value Information from 0-7: Call Group ID Call 8-23: Call Cycle 24-31: Call Deviation Controller ID Logical network identifier for the serving BS or other network entity that retains MSS Service and operation information and / or manage call activity for MSS while in Idle Mode Information The first 8 bits of this Batch Hold indicate Information Idle Mode Idle Retention included in DREG-CMD message, and the rest are MSS service and operation information associated with Withholding Information of Inactive Mode. This item can be included in the Call with Action Code = 0011. BS ID of BS ID to which the MSS in Current Fixing Inactive Mode tries to enter the network again. This item can be included in the Inactive-Info-RSP message if the Action Code is 0011.

BS ID of BS ID in which MSS enters Final Fixing to Inactive Mode. The last BS of Fix can be updated after successful Location Update. This item can be included in the Inactive-Info-RSP message if the Action Code is 0010.

MAC Maximum number that BS can Jump Threshold skip MSS MAC signal address signal from an MSS in successive MOB_PAG-ADV messages when an Action Code for the MSS is 00. 'No Action Required'. The unit is the number of transmissions of Message MOB_PAG-ADV. HO Flag of 1 This item can be optimized to include in Inactive-Info-RSP message with Action Code = 0011. 'MSS new full entry' Referring to Table 14, the inactive mode information response message (Inactive-Info-RSP) can preferably include information that the MSS has entered an inactive mode, an MSS MAC address, information MSS service flow, and TLV encoded information (e.g., Call Information TLV, TLV Call Controller ID, TLV Inactive Mode Hold Information, MAC TLV Signal Leap Threshold). The BS may receive the information response message inactive (Inactive-Info-RSP) and may transmit an inactive mode command message (eg, DREG-CMD) to the MSS that requested the inactive mode entry (S64). The preferably inactive mode command message may include information pertaining to ordering entry to inactive mode, as well as coded information from TLV (e.g., Call Information TLV, Call Driver ID TLV, Mode Hold Information Inactive TLV, Signal Leap Threshold MC TLV). Figure 7 is a flow diagram illustrating an occurrence of traffic in an inactive mobile station, in a wireless access system having a call controller, in accordance with an embodiment of the present invention. Referring to Figure 7, an MSS can enter an inactive mode (S71-S74). The MSS in the idle mode can remain in a BS area where the inactive mode entry was made or can be moved away to another BS area. An example case in which the MSS in idle mode is moved to a second BS area is described below. If downlink traffic occurs in the idle mode, a first BS to which the MSS belonged when it entered the idle mode can transmit information that downlink traffic has occurred in the MSS from idle to a call handler (S75) . The call controller may transmit a call announcement message to notify all BSs in the respective call zone that the inactive MSS has terminated the idle mode to enter a network again (S76, Sil). The BSs can then broadcast a call warning message (e.g., MPB-PAG-ADV). An example call warning message is shown in Table 6.

Table 15 shows a call announcement message. Table 15 Field Size Notes Call announcement message format 152-bit header Global Message For (i = 0; i <Num Registers; i ++ =). { Address MSS MAC 48 bits Action Code 4 bits 0000: MSS will be called to enter network 0001 again: MSS will be called to perform classification 0010-1111: reserved Reserved 4 bits TBD Security Field A means to authenticate this message} While in the idle mode, in this example, the MSS has moved to an area of a second BS. The MSS can recognize that downlink traffic it is present through a call alert message (e.g., MOB_PAG-ADV) periodically broadcast to the calling area. The MSS may then transmit a classification request message for new network entry to the second BS (S78). The second BS may request MSS session information, pertaining to the time before the inactive mode entry, of the call controller using an inactive mode information request message (S79). The call controller may preferably transmit an inactive mode information response message, including MSS session information and information pertaining to the BS where the MSS was located when it entered inactive mode, to the second BS (S80). The second BS may transmit a classification response message including a delivery optimization flag to the MSS based on the MSS session information and the inactive mode hold information transmitted from the call controller (S81). Once the MSS performs a new network entry procedure (S82), the second BS in charge of the area where the MSS is currently located can notify the call controller that the MSS has re-entered the network through the message information request form inactive (S83). By doing this, the second BS can include the delivery optimization flag (which is included in the classification response message) in the information request message inactive. The call controller of preference can recognize that the MSS has entered the network again in a second second BS area after the termination of the inactive mode entry in the first BS. The call controller can then order (instruct) that the traffic delivered to the first BS be transmitted to the MSS through the second BS using the inactive mode information response message (S84). The first BS can deliver the traffic to the second BS in accordance with the command (instruction) of the call controller. The second BS can then transmit the traffic to the MSS (S84). The call controller can then notify all BSs belonging to the call group that the MSS has terminated the idle mode, by using the inactive mode information response message (S86). Each of the BSs may receive the information response message inactive from the call controller and remove the MAC address of the MSS from their respective inactive MSS lists. In one mode, if downlink traffic to be transferred to MSS in idle mode is transferred through the call controller, steps S72 and / or S84 can be skipped. In another embodiment, a method for supporting a mobile station that is in an idle mode in a wireless communication system using a call controller comprises entering an idle mode by a mobile station. The method also comprises receiving a call command from at least one of the plurality of base stations in the same call group, the call control comprising a call control action code associated with performing classification while the mobile station is in idle mode to check the availability of the mobile station with respect to at least one of the base stations in the calling group, wherein the call control is generated from at least one of the plurality of base stations in response to a call announcement from the call controller. The method also comprises leaving the idle mode and establishing communication with one of the plurality of base stations, wherein the plurality of base stations in the same call group receive an inactive state of existence from the call controller. The preferred call announcement may be generated from the call controller when there is downlink traffic data to be delivered to the mobile station. Alternatively, the preferred call announcement may be generated from the call controller when there is uplink traffic data from the mobile station. The inactive mode response command may preferably comprise at least one of the call identifier, a call cycle and a call cycle deviation. The step of leaving the idle mode and establishing preference communication may further comprise transmitting a classification request to one of the plurality of base stations with which the mobile station is associated and receiving a classification response of one of the plurality of base stations. The preferred call announcement may comprise a call announcement action code comprising at least one of (1) adding the mobile station to a call list, (2) removing the mobile station from the call list, (3) ) perform classification to establish location; and (4) enter the network. The preferred call control action code may comprise at least one of (1) entering the network; and (2) perform classification to establish location. The step of entering the inactive mode of preference may further comprise requesting a serving base station by a mobile station to enter an inactive mode, wherein the serving base station is associated with a call controller, the call controller controlling a plurality of base stations associated with a calling group. The step of entering the inactive mode also preferably may comprise receiving an idle mode response command from the serving base station to enter the inactive mode. The call controller can preferably be identified with a call controller identifier and the mobile station is identified with a media access controller (MAC) identifier. The preferred call control may comprise information identifying the mobile station using a MAC identifier. The preferred call announcement may comprise information identifying the mobile station using the MAC identifier. The step of entering the inactive mode by the mobile station may preferably further comprise the call controller which reports an inactive mode input status of the mobile station to the plurality of base stations in the calling group. In still another embodiment, a method for supporting an idle mode by a network in a wireless communication system using a call controller comprises receiving a request from a mobile station to a serving base station to enter an idle mode, wherein the serving base station is associated with a call controller, the call controller controlling a plurality of base stations associated with a calling group. The method also comprises transmitting from the serving base station to the mobile station an inactive mode response command to enter the inactive mode. The method also comprises transmitting a call control of at least one of the plurality of base stations in the same call group, the call control comprising a call control action code associated with performing classification while the mobile station is in idle mode to check the availability of the mobile station with respect to at least one of the base stations in the call group, wherein the call control is generated from at least one of the plurality of base stations in response to a call announcement of the call controller. The method also comprises establishing communication between one of the plurality of base stations and the mobile station. The method also comprises transmitting an existing state of idle mode of the call controller to the plurality of base stations in the same call group. The method may also preferably comprise transmitting an information request message from the server base station to the call controller. inactive to provide information pertaining to the mobile station. The method may also preferably comprise receiving the inactive mode information request message from the serving base station in the call controller. The method may also preferably comprise transmitting from the call controller to the at least one of the plurality of base stations an inactive mode information response message, the inactive mode information request message comprises information pertaining to a threshold of medium access controller (MAC) signal hop. The method may also preferably comprise receiving in the call controller the inactive mode information request message from the serving base station an inactive mode information response message. The inactive mode information response message may also be preferably transmitted to the at least one of the plurality of base stations and may preferably comprise information to notify the at least one of the plurality of base stations that the mobile station The inactive mode has ended. The method may also preferably comprise transmitting from the serving base station to the mobile station an inactive mode command message in response to the mode information response message. inactive. Accordingly, in the present invention, each base station may include operations of an MSS in the idle mode in a call announcement structure message. The call announcement structure message can be delivered by wire between the base stations through call. Therefore, the present invention can reduce the size of the call message (e.g., MOB-PAG_ADV) that the MSS delivers to the MSS in idle mode. In addition, in a wireless access system having a call controller, the present invention can efficiently support the idle mode using the call controller. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without abandoning the spirit or scope of the inventions. Thus, it is intended that the present invention cover the modifications and variations of this invention as long as they fall within the scope of the appended claims and their equivalents. INDUSTRIAL APPLICABILITY The present invention can be applied to a broadband wireless access system.

Claims (40)

1. CLAIMS 1. A method for supporting a mobile station that is in an inactive mode in a wireless communication system using a call controller, the method comprising: entering an inactive mode by a mobile station; receiving a call command from at least one of the plurality of base stations in the same call group, the call control comprising a call control action code associated with performing classification while the mobile station is in the idle mode to verify the availability of the mobile station with respect to at least one of the base stations in the call group, wherein the call control is generated from at least one of the plurality of base stations in response to an announcement call of the call controller; and exit the idle mode and establish communication with one of the plurality of base stations, wherein the plurality of base stations in the same call group receive an inactive state of existence from the call controller.
2. 2. The method according to claim 1, wherein the call announcement is generated from the call controller when there is traffic data of downlink to be delivered to the mobile station.
3. 3. The method according to claim 1, wherein the call announcement is generated from the call controller when there is uplink traffic data from the mobile station.
4. 4. The method according to claim 1, wherein the inactive mode response command comprises at least one of the call identifier, a call cycle and a call cycle deviation.
5. 5. The method according to claim 1, wherein the step of exiting the inactive mode and establishing communication further comprises: transmitting a classification request to one of the plurality of base stations with which the mobile station is associated; and receiving a classification response from one of the plurality of base stations.
6. 6. The method according to claim 1, wherein the call announcement comprises a call announcement action code comprising at least one of (1) adding the mobile station to a call list; (2) remove the mobile station from the call list; (3) perform classification to establish location; and (4) network entry.
7. 7. - The method according to claim 1, wherein the call control action code comprises at least one of (1) entering the network; and (2) perform classification to establish location.
8. 8. The method according to claim 1, wherein the step of entering the inactive mode further comprises: requesting a serving base station by a mobile station to enter an inactive mode, wherein the serving base station is associated with a call controller, the call controller controlling a plurality of base stations associated with a call group; and receiving an inactive mode response command from the serving base station to enter inactive mode.
9. 9. The method according to claim 1, wherein the call controller is identified with a call controller identifier and the mobile station is identified with a media access controller (MAC) identifier.
10. 10. The method according to claim 9, wherein the call control comprises information identifying the mobile station using the MAC identifier.
11. 11.- The method of compliance with the claim 9, wherein the call announcement comprises information identifying the mobile station using the MAC identifier.
12. 12. The method according to claim 1, wherein the step of entering the inactive mode by the mobile station further comprises the call controller that reports an inactive mode status input of the mobile station to the plurality of subscriber stations. base in the call group.
13. 13.- A mobile station, comprising: a means to enter an inactive mode by the mobile station; means for receiving a call command from at least one of the plurality of base stations in the same call group, the call control comprising a call control action code associated with performing classification while the mobile station is in inactive mode for verifying the availability of the mobile station with respect to at least one of the base stations in the calling group, wherein the call control is generated from at least one of the plurality of base stations in response to a call announcement of a call controller; and means for exiting the idle mode and establishing communication with one of the plurality of stations of base, wherein the plurality of base stations in the same call group receive an inactive state of existence from the call controller.
14. 14. The mobile station according to claim 13, wherein the inactive mode response command comprises at least one of the call identifier, a call cycle and a call cycle deviation.
15. 15. The mobile station according to claim 13, wherein the means for exiting the inactive mode and establishing communication further comprises: means for transmitting a classification request to one of the plurality of base stations with which the mobile station; and means for receiving a classification response of one of the plurality of base stations.
16. 16. The mobile station according to claim 13, wherein the call control action code comprises at least one of (1) entering the network, and (2) performing classification to establish location.
17. 17. The mobile station according to claim 13, wherein the means to enter the inactive mode further comprises. means to request a base station for a mobile station entering an inactive mode, wherein the serving base station is associated with a call controller, the call controller controlling a plurality of base stations associated with a calling group; and means for receiving an idle mode response command from the serving base station to enter inactive mode.
18. 18. The base station according to claim 13, wherein the call controller is identified with a call controller identifier and the mobile station is identified with a medium access controller (MAC) identifier.
19. 19. The mobile station according to claim 13, wherein the means for entering the inactive mode by the mobile station further comprises the call controller that informs inactive mode state input of the mobile station to the plurality of mobile stations. base in the call group.
20. 20. A method for supporting an inactive mode by a network in a wireless communication system using a call controller, the method comprising: receiving a request from a mobile station to a serving base station to enter an inactive mode, in where the serving base station is associated with a call controller, the call controller controlling a plurality of base stations associated with a call group; transmitting from the serving base station to the mobile station an inactive mode response command to enter the inactive mode; Transmit a call command from at least one of the plurality of base stations in the same call group, the call control comprising a call control action code associated with performing classification while the mobile station is in the idle mode to verify the availability of the mobile station with respect to at least one of the base stations in the call group, where the call command is generated from at least one of the plurality of base stations in response to an announcement of call controller call; establishing communication between one of the plurality of base stations and the mobile station; and transmitting an inactive state of existence of the call controller to the plurality of base stations in the same call group.
21. 21. The method according to claim 20, wherein the call announcement is generated from the call controller when there is traffic data of downlink to be delivered to the mobile station.
22. 22. The method according to claim 20, wherein the call announcement is generated from the call controller when there is uplink traffic data of the mobile station.
23. 23. The method according to claim 20, wherein the inactive mode response command comprises at least one of the call identifier, a call cycle and a call cycle deviation.
24. 24. The method according to claim 20, further comprising: transmitting from the server base station to the call controller an information request message inactive mode to provide information pertaining to the mobile station. The method according to claim 24, further comprising: receiving in the call controller the inactive mode request information message from the serving base station; and transmitting from the call controller to at least one of the plurality of base stations an inactive mode information response message if the inactive mode information request message comprises information pertaining to an access medium controller (MAC) signal hop threshold. The method according to claim 24, further comprising: receiving in the call controller the inactive mode information request message from the serving base station; and transmitting an inactive mode information response message from the call controller to the serving base station. 27. The method according to claim 26, wherein the inactive mode information response message is transmitted to the at least one of the plurality of base stations and comprises information to notify that at least one of the plurality of base stations that the mobile station has terminated the idle mode. 28. The method according to claim 26, further comprising: transmitting from the serving base station to the mobile station a control message inactive in response to the information response message inactive mode. 29. The method according to claim 20, wherein the call announcement comprises a call announcement action code comprising at least one of (1) adding the mobile station to a call list; (2) remove the mobile station from the call list; (3) perform classification to establish location; and (4) enter the network. 30. The method according to claim 20, wherein the call control action code comprises at least one of (1) entering the network; and (2) perform classification to establish location. The method according to claim 20, wherein the call controller is identified with a call controller identifier and the mobile station is identified with a medium access controller (MAC) identifier. 32.- A base station configured to support an inactive mode by a network in a wireless communication system using a call controller, the base station comprising: means for receiving a request from a mobile station to a serving base station entering an inactive mode, wherein the serving base station is associated with a call controller, the call controller controlling a plurality of base stations associated with a calling group; means to transmit from the base station serving to the mobile station an inactive mode response command to enter inactive mode; means for transmitting a call control of at least one of the plurality of base stations in the same call group, the call control comprising a call control action code associated with performing classification while the mobile station is in the inactive mode for verifying the availability of the mobile station with respect to at least one of the base stations in the calling group, wherein the call control is generated from the at least one of the plurality of base stations in response to a call announcement from the call controller; means for establishing communication between one of the plurality of base stations and the mobile station; and means for transmitting an inactive state of existence of the call controller to the plurality of base stations in the same call group. 33. The base station according to claim 32, wherein the inactive mode response command comprises at least one of the call identifier, a call cycle and a call cycle deviation. 34. The base station according to claim 32, further comprising: means for transmitting from the server base station to the call controller an information request message inactive mode to provide information pertaining to the mobile station. The base station according to claim 34, further comprising: means for receiving the inactive mode information request message from the serving base station in the call controller.; and means for transmitting from the call controller to the at least one of the plurality of base stations an inactive mode information response message if the inactive mode information request message comprises information pertaining to a signal hop threshold of Medium access controller (MAC). 36. The base station according to claim 34, further comprising: means for receiving in the call controller the information request message inactive from the serving base station, means for transmitting from the call controller to the serving base station an inactive mode information response message. 37.- The base station according to claim 36, wherein the response message of inactive mode information is transmitted to the at least one of the plurality of base stations and comprises information to notify the at least one of the plurality of base stations that the mobile station has terminated the idle mode. 38. - The base station according to claim 36, further comprising: means for transmitting from the serving base station to the mobile station an inactive mode command message in response to the inactive mode information response message. 39.- The base station according to claim 32, wherein the call announcement comprises a call announcement action code comprising at least one of (1) adding the mobile station to a call list; (2) remove the mobile station from the call list; (3) perform classification to establish location; and (4) enter the network. 40.- The base station according to claim 32, wherein the call control action code comprises at least one of (1) entering the network; and (2) perform classification to establish location.