KR20060103105A - Method of transferring primitives for scanning in braodband wireless access system - Google Patents

Abstract

A primitive delivery method for scanning in a broadband wireless access system according to the present invention includes: a first step of receiving a neighbor base station information broadcast message transmitted from a base station in a specific lower layer of the mobile terminal; A second step of transmitting, in the specific lower layer, information included in the neighbor base station information broadcast message to a higher management entity through a first primitive; Delivering a second primitive instructing the upper management entity to perform scanning to the specific lower layer; And performing scanning on the neighbor base stations.

Broadband, wireless access, mobile terminal, scanning, primitives, parent management entity

Description

Method of transferring primitives for scanning in braodband wireless access system

1 illustrates a protocol hierarchy of a broadband wireless access system.

2 is a diagram illustrating a procedure for broadcasting and searching neighboring base stations in a broadband wireless access system according to the prior art.

Figure 3 illustrates a protocol architecture model that takes into account Media Independent Handover (MIH).

4A and 4B are diagrams for explaining the principle of operation of primitives.

5 is a process flow diagram of one preferred embodiment of the present invention.

6 is a process flow diagram of another preferred embodiment of the present invention.

The present invention relates to a broadband wireless access system. More specifically, the present invention provides a method for clearly defining primitives in a mobile station stack and primitives in a base station stack when the mobile station performs scanning for the purpose of measuring channel quality of a neighboring base station in a broadband wireless access system. It's about the law.

Unlike the existing 2G and 3G mobile communication systems, the IEEE802.16e system, which is undergoing international standardization for broadband wireless access system, has a home location register (HLR), a visitor location register (VLR), a mobile switching center (MSC) and a BSC ( It does not have a hierarchical structure such as Base Satation Controller, RNC (Radio Network Controller), and consists only of MSS (Mobile Subscriber Station), BS (Base Station) and BS (Authenticastion Service Authorization). It is.

The Broadband Wireless Access System defines a protocol of a medium access control (MAC) layer and a physical layer (PHY) layer common between a base station and a mobile terminal. 1 illustrates a protocol hierarchy of a broadband wireless access system.

2 is a diagram illustrating a procedure for broadcasting and searching neighboring base station information in a broadband wireless access system according to the prior art.

When the MSS receives the neighbor BS information broadcast message (MOB-NBR-ADV) from the serving BS [S21], the MS temporarily stops receiving data from the serving BS. In order to obtain a time (duration = N frames) for measuring channel quality of neighbor BSs (target BSs), a scan request message (MOB_SCN-REQ) is transmitted [S22]. While the mobile station measures channel quality of neighboring base stations, the serving base station stops and stores data transmission to the mobile station, and then transmits the stored data after the search time requested by the mobile station. The MOB_NBR-ADV is a message broadcasted by the serving base station to provide relevant information about neighboring base stations to the mobile station. The MOB_NBR-ADV message includes the number of neighboring base stations and an identifier of neighboring base stations. , Frequencies used by neighboring base stations, channel information of neighboring base stations, and the like.

The serving base station transmits a scan response message (MOB_SCN-RSP) in response to the scan request message (MOB_SCN-REQ) transmitted from the mobile station [S23]. In FIG. 2, it means that the serving base station guarantees time for measuring channel quality of neighboring base stations during 'N frame' after 'M frame'. In other words, a scan duration requested by the mobile station is guaranteed by a scan request message and a scan response message between the mobile station and the serving base station, and the promise that the guaranteed period starts after a 'M frame' time is initiated. It is made between the mobile terminal and the serving base station. The mobile station measures the channel quality of neighboring base stations during the guaranteed search period [S24, S25]. The mobile station transmits scanning results of neighboring base stations to the serving base station through a scanning result report message (MOB_SCAN-REPORT) [S26].

In the prior art as described above, the messages (MOB_SCN-REQ, MOB_SCN-RSP, MOB_SCAN-REPORT) that the mobile station transmits and receives to the base station for scanning are defined, but the protocol stack in the mobile station is related to the actual scanning. Operations within the layer and operations within the protocol layer within the base station are not defined. That is, primitives for information transmitted between the MAC layer and higher management entities communicated through NCMS are not defined in the stack of the mobile station and the base station protocol.

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art as described above, and an object of the present invention is to define primitives between a higher management entity and a MAC layer in order to perform a scan in a mobile protocol stack layer. It is to provide a primitive delivery method for scanning in a broadband wireless access system that can describe a specific operation.

In the present invention, the primitives are transferred from the MAC layer to a higher management entity required through a Network Control Management System (NCMS) to manage or control the previous system (mobile terminal or base station). The present invention relates to a method for managing a medium access control (MAC) layer and a physical layer (PHY). In particular, the present invention relates to a method for defining primitives to be transferred between a MAC layer and a higher management entity through a Network Control Management System (NCMS) in a mobile station and a base station stack when the mobile station performs scanning.

In the present invention, the term 'managed entity' refers to all entities that interface with the NCMS, which may be any logical management entity or physical management entity that may be in the IP layer or a higher layer in the device. The format expressed in the present invention can be expressed as if the NCMS directly sends a primitive because the above-described upper management entity performs communication by being delivered to a management SAP or a control SAP through NCMS. have. The term parent management entity used in the present invention refers to a layer management entity in a protocol stack as shown in FIG. 1 and a physical or logical parent management communicated through the management SAP of NCMS or layer management entity located above. Can be used as a separate entity. The parent management entity may exist within a protocol stack but may exist as a separate, independent system or stack. Conceptually, we use the term parent management entity.

3 illustrates a protocol architecture model considering media independent handover (MIH).

Primitives proposed in the present invention are delivered to a Network Control & Management System (NCMS) through Management SAP (Control SAP) or Control SAP (Control SAP), and NCMS superimposes these primitives. It can be delivered where it is needed, including managed objects.

The management SAP may have functions such as system configuration, monitoring statistics, notifications / triggers, but is not limited thereto. Controlled SAPs include Handovers, eg notification of HO request from MS, etc., Idle mode mobility management, eg Mobile entering idle mode, Subscriber and session management, eg Mobile requesting session setup) and radio resource management, but are not limited thereto. Although functionally classified as described above, the primitives proposed in the present invention may be delivered through the management SAP and the control SAP.

4A and 4B are diagrams for explaining the principle of operation of a primitive. Primitives that require interaction with a remote entity are shown in FIG. 4A and primitives that are delivered only within the local stack are shown in FIG. 4B. As shown in FIG. 4A, when there is interaction with a remote object, the request is delivered in a pair of 'Request', 'Confirmation', 'Response' and 'Indication'.

As shown in FIG. 4B, when the operation is performed in the local stack, the management entity and the NCMS may be divided into one-way and one-way exchanges. In case of mutual exchange, it is called 'Request' that is transmitted from managed object to NCMS through Management SAP / Control SAP and 'Indication' is sent in response. In the case of unidirectional communication, the communication from the managed object to the NCMS through the management SAP / control SAP is the same as 'Request', and vice versa.

The primitives presented in the present invention may be used when the entity managing the multimode mobile terminal commands the mode or when the mode transfers information to the entity managing the multimode. This case can be divided into two cases.

The first is a case in which a primitive is transmitted from a Media Independent Handover (MIH) layer or a MIH function (MIH function) to a lower layer. ) May be transmitted by transmitting the corresponding primitive, or may be transmitted by mapping a command of a higher layer with the command of the present invention.

The second is a case of transmitting a primitive from the lower layer to the MIH layer or the MIH function, and the MIH may transmit a corresponding primitive (unified primitives defined in the MIH) to be interpreted by the lower layer and sent to the upper layer. The primitive of may be simply mapped and transmitted with the primitive sending to the upper part.

When used for MIH (Media Independent Handover), the primitives defined in the present invention are transferred to the SAP of the NCMS and the MIH or the SAP of the management entity and the MIH to enable the description of the medium independent handover (MIH).

In one aspect of the present invention, a primitive delivery method for scanning in a mobile terminal of a broadband wireless access system according to the present invention, receives a neighbor base station information broadcast message transmitted from a base station in a specific lower layer of the mobile terminal. The first step to do; A second step of transmitting, in the specific lower layer, information included in the neighbor base station information broadcast message to a higher management entity through a first primitive; Delivering a second primitive instructing the upper management entity to perform scanning to the specific lower layer; And performing scanning on the neighbor base stations.

As a detailed feature of the present invention, the method may further include a fourth step of transmitting a scanning result in the specific lower layer to the higher management entity through a third primitive.

As another detailed feature of the present invention, the method may further include transmitting a fourth primitive instructing the upper management entity to transmit a scan request message to the base station to the specific lower layer.

As another detailed feature of the present invention, the method may further include receiving a scan response message from the base station at the specific lower layer and delivering a content of the scan response message to the higher management entity through a fifth primitive. .

As another detailed feature of the present invention, the method may further include transmitting a sixth primitive instructing the upper management entity to transmit a scanning result report message to the base station to the specific lower layer.

In order to perform scanning, the mobile station uses MAC messages transmitted and received by the base station and primitives proposed by the present invention to describe an operation description between the upper management entity and the MAC layer through NCMS in the mobile station and the base station. Embodiments will be described with reference to the accompanying drawings.

5 is a flow chart of a preferred embodiment of the present invention, illustrating an example in which a mobile station performs scanning without requesting a scan from a base station. Even without information of neighboring base stations received from the base station, the mobile station can request scanning of the mobile station and the mobile station can also perform its own scanning.

After receiving the MOB_NBR-ADV message from the base station, the MAC layer of the mobile station transfers the information contained in the message to its higher management entity through the M_Neighbor.indication primitive [S52]. The MOB_NBR-ADV is a message broadcasted by the base station to provide related information about neighboring base stations to the mobile station. The MOB_NBR-ADV message includes a number of neighbor base stations, an identifier of a neighbor base station, The frequency used by the neighbor base station, channel information of the neighbor base station, and the like are included.

The NCMS entity of the mobile station transmits M_Scanning.request instructing the MAC layer of the mobile station to perform scanning [S53]. The MAC layer of the mobile station executes scanning [S54], and delivers the result to the higher management entity through the M_Scanning.confirmation primitive [S55].

6 is a flowchart illustrating another exemplary embodiment of the present invention, in which an MS performs scanning after requesting a scanning from a base station.

After receiving the MOB_NBR-ADV message from the base station [S61], the MAC layer of the mobile station transfers the information included in the message to its higher management entity through the M_Neighbor.indication primitive [S62]. The NCMS layer of the mobile station sends an M_ScanScheduling.request primitive to the MAC layer of the mobile station [S63], instructing the base station to request a MOB_SCN-REQ message.

The MAC layer of the mobile station transmits a MOB_SCN-REQ message to the MAC layer of the base station [S64], and the MAC layer of the base station transmits the contents of the MOB_SCN-REQ message to an upper management entity of the base station through the M.ScanScheduling.indication primitive. To pass on [S65].

The higher management entity of the base station schedules the scanning period and the start frame of the mobile station and delivers it to the MAC layer of the base station through the M_ScanScheduling.response primitive [S66]. The MAC layer of the base station transmits a MOB_SCN-RSP message to the mobile station and responds to the MOB_SCN-REQ message [S67].

After receiving the MOB_SCN-RSP message from the base station, the MAC layer of the mobile station transfers it to its higher management entity through the M.ScanScheduling.indication primitive [S68]. The higher management entity of the mobile station sends an M_Scanning.request primitive to instruct scanning of the MAC layer of the mobile station [S69]. After performing the scanning [S70], the MAC layer of the mobile terminal transmits the result to the higher management entity of the mobile terminal through the M_Scanning.confirmation primitive [S71]. The higher management entity of the mobile station sends an M_ScanReport.request primitive to the MAC layer of the mobile station [S72] to instruct the base station to transmit a MOB_SCAN-REPORT message. After the MAC layer of the mobile station transmits a MOB_SCAN-REPORT message to the base station [S73], this is the M_ScanReport. The confirmation primitive is passed to the parent management entity of the mobile terminal [S74].

Hereinafter, primitives transmitted to a management SAP (M_SAP: Management SAP) or a control SAP (C_SAP: Control SAP) for the scanning of the mobile station and the request to the base station according to the present invention described with reference to FIGS. This will be described in detail.

(1) M_Neighbor.indication primitive

1) function

The M_Neighbor.indication primitive is a primitive transmitted when the MAC layer of the mobile station receives information on neighboring base stations from a serving base station as a MAC management message through a management_SAP to provide it to a higher management entity. . In addition, this primitive operates in another network. When performing a handover to a broadband wireless access network, the primitive receives a DCD message from a new broadband wireless access network, and then decodes a broadcast message based on a burst profile. DL-MAP knows where the MOB_NBR-ADV comes from when it is available, and decodes the MOB_NBR-ADV message, which is the broadcast message received from that location, to provide information about the MIH capacity and IS capabilities of the current or neighboring base stations. If obtained, it may be delivered.

2) Semantics

M_Neighbor.indication

{

Source,

Destination,

Current BS MIH Capability

Current BS IS Support

Operator ID,

N_Neighbors,

Neighbor BS-ID,

Neighbor BS MIH Capability,

Neighbor BS IS Support,

HO Process Optimization,

Available Radio Resource

}

Table 1 below shows an example of the data format of the M_Neighbor.indication primitive.

Name Type Valid range Description Source Indication start point Destination Destination point where Indication is delivered Operator ID Identifier assigned to operator of base station sending Indication Current BS MIH Capability Whether the current serving base station is MIH Capability Current BS IS Support IS support of current serving base station N_Neighbors Total number of base station IDs sent in the notification Neighbor BS-ID Base station ID Neighbor BS MIH Capability MIH Capability of neighboring base stations Neighbor BS IS Support IS support of nearby base stations HO Process Optimization This field includes information that can be maintained when the mobile station handovers to the base station. If the bit is set to 1, this field indicates information that can be maintained even when handover to the base station. Bit # 0: SBC-REQ / RSP Message Bit # 1: PKM-REQ / RSP Message Bit # 2: REG-REQ / RSP Message Bit # 3: IP Address Bit # 4: Time of Day Acquisition Message Bit # 5: TFTF Message Bit # 6: Information related to all services and operations Available Radio Resource Percentage of available subchannels and symbol resources per frame of the base station-0b0000: 0%-0b0001: 20%-0b0010: 40%-0b0011: 60%-0b0100: 80%-0b0101: 100%-0b0110-1110: Reserved beat

The above syntax and the syntax below 'N_Neighbors' in Table 1 are repeated as many as the number determined by 'N_Neighbors' to indicate information of neighbor base stations. Another method of delivering a plurality of base station information is a method of delivering a plurality of neighboring base stations (N_Neighbors).

3) creation time

The M_Neighbor.indication primitive is generated for the MAC layer of the mobile station to receive the MOB_NBR-ADV message from the base station and then deliver the necessary information contained in the message to the higher management entity.

4) Effect on reception

The higher management entity learns information about neighboring base stations after receiving the M_Neighbor.indication primitive from the MAC layer of the mobile station.

(2) M_ScanScheduling.request primitive

1) function

The M_ScanScheduling.request primitive is a primitive that instructs a higher management entity of a mobile station to transmit a MOB_SCN-REQ message to a base station for scanning to the MAC layer of the mobile station.

2) Semantics

M_ScanScheduling.request

{

  Source,

Destination,

Scan duration,

BSID

}

Table 2 below shows an example of the data format of the M_ScanScheduling.request primitive.

Name Type Valid range Description Source Starting point where the request is issued Destination Purpose point to which request is sent Scan duration How long the mobile terminal runs the scan BSID After the mobile receives this primitive, it sends a counter BS ID

3) creation time

The M_ScanScheduling.request primitive is generated to instruct the higher management entity of the mobile station to send a MOB_SCN-REQ message to the base station to the MAC layer of the mobile station.

4) Effect on reception

After receiving the M_ScanScheduling.request primitive, the MAC layer of the mobile station transmits a MOB_SCN-REQ message to the base station.

(3) M_ScanScheduling.indication primitive

1) function

The M_ScanScheduling.indication primitive is a primitive for delivering information related to the MOB_SCN-REQ message received from the mobile station by the MAC layer of the base station to the higher management entity of the base station.

2) Semantics

M_ScanScheduling.indication

{

  Source,

  Destination,

MS MAC Address,

Scan duration

}

Table 3 below shows an example of the data format of the M_ScanScheduling.indication primitive.

  Name Type Valid range Description Source Starting point at which Indication occurs Destination Destination point where Indication is delivered MS MAC Address MAC address of the mobile device that requested the scan Scan duration Scan period requested by mobile terminal

3) creation time

The M_ScanScheduling.indication primitive is generated to deliver the information to its higher management entity after the MAC layer of the base station receives the MOB_SCN-REQ message from the mobile station.

4) Effect on reception

After receiving the M_ScanScheduling.indication primitive, the higher management entity of the base station determines whether to permit or reject the scanning request of the mobile station.

(4) M_ScanScheduling.response primitive

1) function

The M_ScanScheduling.response primitive is a primitive for the higher management entity of the base station to deliver a result of the scanning request of the mobile station to its MAC layer.

2) Semantics

M_ScanScheduling.response

{

Source,

Destination,

MS MAC Address,

Scan duration,

Start frame

}

Table 4 below shows an example of the data format of the M_ScanScheduling.response primitive.

  Name Type Valid range Description Source Starting point where response occurs Destination Purpose point where response is delivered MS MAC Address MAC address of the mobile device that requested the scan Scan duration Period during which scan is allowed to mobile terminal Start frame Frame that mobile terminal starts scanning. If this value is 0, scan starts from next frame.

3) creation time

The M_ScanScheduling.response primitive is generated for the higher management entity of the base station to determine the result of the scan request for the mobile station and then deliver the related information to its MAC layer.

4) Effect on reception

After receiving the primitive, the MAC layer of the base station transmits a MOB_SCN-RSP message to the mobile station.

(5) M_ScanScheduling.confirmation primitive

1) function

The M_ScanScheduling.confirmation primitive is a primitive for delivering the information of the received message to its parent management entity after the MAC layer of the mobile terminal receives the MOB_SCN-REQ message.

2) Semantics

M_ScanScheduling.confirmation

{

Source,

Destination,

Scan duration,

Start frame

}

Table 5 shows an example of the data format of the M_ScanScheduling.confirmation primitive.

  Name Type Valid range Description Source Start point where confirmation occurs Destination Destination point to which Confirmation is delivered Scan duration Period during which scan is allowed to mobile terminal Start frame Frame that mobile terminal starts scanning. If this value is 0, scan starts from next frame.

3) creation time

The M_ScanScheduling.confirmation primitive is generated by the MAC layer of the mobile station to convey scan related information received from the base station to the NCSM or management entity.

4) Effect on reception

The higher management entity of the mobile terminal may instruct the mobile terminal to scan based on the information included in the received primitive.

(6) M_Scanning.request primitive

1) function

The M_Scannin.request primitive is a primitive used by the higher management entity of the mobile station to instruct scanning of the MAC layer of the mobile station. Through this primitive, the parent management entity can set the criteria (signal quality) or scan period reporting period to receive future scan results through the Link Quality Threshold and Link Status Report Period parameters. You can also set the scan period via Scan Duration.

2) Semantics

M_Scanning.request

{

 Source,

 Destination,

 Scan duration,

 Link Quality Threshold

 Link Status Report Period

}

Table 6 below shows an example of the data format of the M_Scanning.request primitive.

  Name Type Valid range Description Source Starting point where the request is issued Destination Purpose point to which request is delivered Scan duration Period of instructing mobile terminal to perform scan Link Quality Threshold If the link (wireless signal) quality is worse than this criterion, the deep report quality threshold should be reported. Link Status Report Period How often a scanning report should be reported

3) creation time

The M_Scanning.request primitive is created for the upper management layer of the mobile station to instruct its MAC layer to scan.

4) Effect on reception

After receiving the primitive, the MAC layer of the mobile station performs scanning.

(7) M_Scanning.confiramtion primitive

1) function

The M_Scanning.confiramtion primitive is a primitive used by the MAC layer of the mobile terminal to convey the result of scanning to its parent management entity. Another purpose of this primitive can be passed as an acknowledgment that the command of M_Scanning.request has been correctly delivered, in which case the link quality threshold or scan result to report the actual scan result set by M_Scanning.request. Report status (Link Status Report Period) is included and delivered. This primitive may be delivered regardless of the period and criteria set in the request message (M_Scanning.request) or without the request message (M_Scanning.request) when used for reporting a scan result. The scan results include broadcast messages, such as DL-MAP, FCH, or 'Neighbor Advertisement', if the base station detects whether it supports MIH and Information Service (IS). , IS support or not). When information on a plurality of base stations is transmitted by scanning a plurality of base stations, information on the plurality of base stations may be repeatedly included in one message and transmitted. Alternatively, the following messages may be provided in plurality, that is, the number of scanned base stations You can also pass it. When the terminal reports the signal quality of the base station currently connected to the base station and transmits the ID including the ID of the base station currently connected. Even when the BS ID is omitted, the BS ID may indicate that the signal quality of the base station to which the terminal is currently connected.

2) Semantics

M_Scanning.confirmation

{

 Source,

 Destination,

 ResultCode,

 BS ID,

 MIH Capability,

 Event Service Supported,

 Command Service Supported,

 IS Support,

 CINR,

 RSSI

 Link Quality Threshold

 Link Status Report Period

}

Table 7 below shows an example of the data format of the M_Scanning.confirmation primitive.

  Name Type Valid range Description Source Start point where confirmation occurs Destination Destination point to which Confirmation is delivered Result code Enumeration Available BS NoAvailable BS Indicates the result of running a scan. Available BS: Available BS is searched. NoAvailable BS: No available BS was found. BS ID Available Base Station IDs for Scan Results MIH Capability Flag 0: MIH not Supported 1: MIH Supported Event Service Supported 0: Event Service not supported 1: Event Service supported Command Service Supported 0: Command Service not supported 1: Command Service supported IS Support Flag 0: IS not Supported 1: IS Supported CINR CINR value of available base station as scan result RSSI RSSI value of available base stations as scan result Link Quality Threshold Criteria to report when link (wireless signal) quality is worse than this standard Scan Report period Period to receive scan result

3) creation time

The M_Scanning.confirmation primitive is created to convey the result of the mobile terminal's scanning to its parent management entity. When the signal quality standard is set by M_Scanning.request, it is delivered when the signal quality of the received signal is not better than the set value. In addition, when the reporting period is set by M_Scanning.request, the report is reported according to this period.

4) Effect on reception

After receiving the primitive, the higher management entity of the mobile terminal determines handover for the available base station.

(8) M_ScanReport.request primitive

1) function

The M_ScanReport.request primitive is a primitive used by the parent management entity of the mobile station to instruct the mobile station to report the scan result to the base station or the parent management entity itself. The parent managed entity can also set the criteria for reporting future scan results (signal quality) or scan result reporting period via the Link Quality Threshold and Link Status Report Period parameters. You can also include a Report Target in this primitive to target the report. If the report target is a base station, it is reported remotely. If a parent object is designated, the report is reported to the parent object.

2) Semantics

M_ScanReport.request

{

 Source,

Destination,

Report Target

Link Quality Threshold

Link Status Report Period

}

Table 8 below shows an example of the data format of the M_ScanReport.request primitive.

  Name Type Valid range Description Source Starting point where the request is issued Destination Purpose point to which request is delivered Report Target Who wants to receive scan results: BS or parent (including parent management entity) Link Quality Threshold Criteria to report when link (wireless signal) quality is worse than this standard Scan Report period How often do you want to report the scanned result?

3) creation time

The M_ScanReport.request primitive is generated to instruct the parent management entity of the mobile station to send a MOB_SCAN-REPOT message to the base station or the parent management entity.

4) Effect on reception

After receiving the M_ScanReport.request primitive, the MAC layer of the mobile station transmits a MOB_SCAN-REPORT message to the base station. Or, if the report target is local (including the parent management object), the scan target is notified of the scan result through M_ScanReport.confirmation. If M_ScanReport.request is delivered with a report period or signal quality criteria, these values are set in the MAC layer.

(9) M_ScanReport.confirmation primitive

1) function

The M_ScanReport.confirmation primitive is a primitive used by the MAC layer of the mobile station to inform its parent management entity of the transmission result after transmitting the MOB_SCAN-REPORT message to the base station. Another purpose of this primitive is to report the status of the radio channel to the parent objects, including the parent management entity (such as the Report Target set by M_ScanReport.request or the M_Scanning.request request).

 When this primitive is used to report radio channel status, it can report to established criteria (such as signal quality or frequency). In addition, if there is a task to report the radio channel status without M_ScanReport.request, it can be generated and delivered without request.

2) Semantics

M_ScanReport. confirmation

{

 Source,

Destination,

ResultCode,

 CINR,

RSSI

}

Table 9 below shows an example of the data format of the M_ScanReport.confirmation primitive.

  Name Type Valid range Description Source Start point where confirmation occurs Destination Destination point to which Confirmation is delivered Result code Indicates Success or Fail for Scan Report message transmission. CINR Scan Result Base Station CINR Value RSSI Scan Result Base Station RSSI Value

3) creation time

The M_ScanReport.confirmation primitive is generated to report the scan result to the base station after the MAC layer of the mobile station transmits the scan result to the base station. When reported locally, it is created to convey the status of the radio channel (eg, scan results, etc.) to the parent entity (including the parent management entity).

4) Effect on reception

The parent management entity of the mobile station knows that the mobile station has completed sending the MOB_SCAN-REPORT message. When the radio channel (link) quality is included, the radio channel state with the base station is known.

It is apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit and essential features of the present invention. Accordingly, the above detailed description should not be construed as limiting in all aspects and should be considered as illustrative. The scope of the invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the invention are included in the scope of the invention.

According to the scanning method in the broadband wireless access system according to the present invention, when the mobile station performs scanning through primitives in the protocol stack layer, it is possible to implement a clear operation in the protocol stack of the actual mobile terminal. have. This enables communication through the NCMS and the Media Independent Handover (MIH) layer and primitives, thereby making it possible to realize Media Independent Handover.

Claims (8)

In the primitive transfer method for scanning in the mobile terminal of the broadband wireless access system, Receiving a neighbor base station information broadcast message transmitted from a base station in a specific lower layer of the mobile station; A second step of transmitting, in the specific lower layer, information included in the neighbor base station information broadcast message to a higher management entity through a first primitive; Delivering a second primitive instructing the upper management entity to perform scanning to the specific lower layer; And Performing primitive scanning on the neighbor base stations. The method of claim 1, And transmitting a scanning result from the specific lower layer to the higher management entity through a third primitive. The method of claim 2, And transmitting a fourth primitive instructing the upper management entity to transmit a scan request message to the base station to the specific lower layer. The method of claim 3, Receiving a scan response message from the base station at the specific lower layer, and transmitting a content of the scan response message to the higher management entity through a fifth primitive. The method of claim 4, wherein And transmitting a sixth primitive instructing the specific management layer to transmit a scanning result report message to the base station from the higher management entity. The method according to any one of claims 1 to 5, And the first to sixth primitives are delivered through a managed service access point (SAP) or a control SAP. The method according to any one of claims 1 to 5, When the mobile terminal is a multi-mode mobile terminal, a medium independent handover function (MIH function) transfers the first to sixth primitives between the upper management object and the specific lower layer. Primitive delivery method for scanning. The method according to any one of claims 1 to 5, And said specific sublayer is a medium access control (MAC) layer.

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