KR100286894B1 - Protocol for Management of Base Station, Base Station Controller and Subscriber Registration Unit in Wireless Subscriber Network System - Google Patents

Abstract

Disclosed is a protocol for management of a base station, a base station controller, and a subscriber matching device in a wireless subscriber network system. The data structure of the message used in the wireless subscriber network includes a destination address; Full length 1, layer, and primitive excluding destination and length 1; Base station number, layer, primitive, CDMA modem ID of the destination or source of the message; Length 2 except for the base station number and its own field, service_description for pre-processing, source address, command to distinguish whether the message is read / write / request / response, sequence of messages, and actual data L_ length of the number, system_information identifying whether the source / destination of the message is a base station controller / base station / subscriber access device; 1 byte each, the rack number / shelf number / unit number / board number / port number of the source / destination of the message, the item confirming the validity of the message, each date / time / minute / second; It consists of a type that distinguishes whether a data unit is 1 byte or 4 bytes, and a message including a field of actual data [0-63]. By defining the data structure of the transmission and reception messages in the wireless subscriber network system, it is possible to propose a standardized message management protocol of the base station, base station controller and subscriber matching device.

Description

Protocol for Management of Base Station, Base Station Controller and Subscriber Registration Unit in Wireless Subscriber Network System

The present invention relates to a protocol for management of a base station, a base station controller, and a subscriber matching device in a wireless subscriber network system. Particularly, a syntax and semantic data structure of a message is included in a system management protocol of a wireless subscriber network system. The present invention relates to a protocol for management of a base station, a base station controller, and a subscriber matching device of a standardized wireless subscriber network system.

1 is a configuration diagram illustrating an operation scenario of a general wireless subscriber network system (WLL).

Referring to FIG. 1, in the W-CDMA communication system, the wireless subscriber network (WLL) system includes a subscriber station diagnosis monitor (RIU DM: 9), a subscriber station (RIU: 10), and a base station (RP). 20-2n), the base station controller (RP: 30), the base station operating device (RPOM: 40), and the WLL switching center 50.

The subscriber interface diagnostic monitor 9 is a computer monitor connected to the subscriber interface 10 via a physical interface via RS232C.

The subscriber access device (RIU: 10) performs voice encoding, tone function (warning / recording), G3-FAX and pulse / D.T.F dialing functions of voice band data of 33.6kbps or more. POTS terminal access function, Integrated Services Digital Network (ISDN) terminal access function, ISDN service / RS-232C access function and data terminal access function performing Internet access function, security function performing subscriber ID (ID) authentication function, operation And maintenance functions, wireless access functions, and diagnostic monitor (DM) access functions.

The base stations (RP: 20-2n) perform a resource management function of a radio access channel and a wired link channel, a radio access function such as radio signal modulation and demodulation, a base station controller matching function, and a base station operation function.

The base station controller (RPC) 30 has a call processing function, a wireless subscriber network switch (WLL) access function, a base station matching and access function, a subscriber traffic processing function, an operation management (OA & M) function, an interworking function (hereinafter referred to as IWF). Interface function) and mobility processing function. Detailed functions are as follows.

-Call processing function:

① Call processing required between WLL exchange and base station

② ITU-T G.965 (V5.2)

-WLL switch connection function

Base station matching and management

Subscriber traffic handling function:

① Voice compression: 64k A-law PCM, 32k ADPCM, 16k LD-CELP

② Voice band data and G3-FAX

③ Pulse / DTMF Dialing / Hookflash

-Operation management (OA & M) function:

① Software and Database Download

② Alarm display and maintenance

③ E1 link control and maintenance

④ Subscriber line control and maintenance

⑤ Test function

-Internetworking function (IWF) and interface functions:

① Public information (PSPDN) search function-Modem POOL module / X.25

② Internet connection function

③ Resource management and call control function

④ IWF / WLL exchange period signal protocol (R2) function

⑤ IWF / Base International Language Period Signaling Protocol (LAPD) Function

Mobility processing

The base station operating device (RPOM) 40 performs a subscriber management function, a configuration management function, a failure management function, a performance management function, a security management function, an operator matching function, and a software downloading function (RPC, RP, RIU).

The WLL switching center 50 is a wireless subscriber network (WLL) subscriber management function, call processing function, base station controller (RPC) matching function (E1 / V5.2 interface), other network interworking function, common management information protocol based agent (CMIP) It performs TMN (Telecommunications Management Network) interworking function and visitor location registration function for communication network management.

As the structure of the wireless subscriber network system (WLL) is shown in FIG. 1, each message should be transmitted to a base station controller, a base station, and a peripheral processor. Therefore, the present invention provides a protocol syntax and semantics for this purpose. semantic). At this time, the system is a base station and they are composed of a rack, a shelf, and a device board.

The self includes a processor for controlling a group of devices (Modem, Transcoder) to communicate with the device boards via a bus (Bus). The shelf's processor is referred to as the main processors of the base station controller (RPC) and the rest of the processor is called a peripheral processor (PP). The rack is a collection of the shelf, the base station controller (RPC) is composed of up to five racks (Rack), the base station (RP) is composed of up to 32 racks. A base station (RP), a base station controller (RPC) and a WLL exchanger include a main processor (MP) and a peripheral processor (PP), respectively.

2 is a configuration diagram connected to an E1 (2.048 Mbps) dedicated line between a base station and a base station controller in a wireless subscriber network.

Referring to FIG. 2, since the WLL system is complicated, the number of subscribers is large, and the main processor (hereinafter referred to as MP) and the peripheral processor (hereinafter referred to as PP) are used to provide information. Receive. In this case, the exchanged information includes configuration information and status information (operation or not operation of a device board) of each self and information requested by a base station operating apparatus (RPOM). In addition, call processing is performed jointly with each peripheral processor (PP) to handle call requests from wireless subscriber network (WLL) exchanges.

In the wireless subscriber network (WLL), the management protocol is notified to the outside because the management protocol is dependent on the system. However, due to the lack of the concept of processing of the protocol, the management protocol is operated according to the structure of each event to increase complexity and difficulty.

Wireless subscriber networks (WLLs) do not have a unified structure due to a lack of understanding and implementation of management protocols, meaning that each process has its own message handling structure and processes data on a case-by-case basis. do.

However, the conventional technology does not consider the overall structure, memory efficiency, and transmission efficiency of the wireless subscriber network (WLL) system, and there is no formalized rule because the number of items to be implemented in implementation is proportional to the complexity. There is this.

The present invention has been made to solve the above problems, an object of the present invention is to propose a protocol for efficient wireless subscriber network (WLL) management to manage the base station, base station controller, subscriber matching device of the wireless subscriber network system Provide a protocol for

1 is a configuration diagram showing an operation scenario of a typical wireless subscriber network system (WLL).

2 is a configuration diagram connected with an E1 (2.048 Mbps) dedicated line between a base station and a base station controller in a wireless subscriber network.

3 is a view for explaining the protocol syntax (Syntax) of the wireless subscriber network system according to the present invention.

4 (a) to (c) is a protocol stack for operating a management protocol in a wireless subscriber network system.

FIG. 5 is a diagram for explaining a protocol model operating in a task position in a wireless subscriber network system. FIG.

<Description of the code | symbol about the principal part of drawing>

9: Subscriber Access Monitor 10: Subscriber Access

20-2n: base station 50: WLL switching center

30: base station controller 40: base station operating device

In order to achieve the above object, the present invention provides a subscriber access device (RIU), a base station (RP), a base station controller (RPC), in a WLL system of a wideband code division multiple access (W-CDMA) system, The syntax of the protocol for sending and receiving messages in a system comprising a base station operator (RPOM) and a wireless subscriber network (WLL) exchange,

A destination address field indicating an address of a destination peripheral processor or main processor; A first length field indicating a total length excluding the destination address and the first length; A layer field indicating a number of a task sending a message; A primitive field defining the purpose and to-do of the message; ID identifier field of the CDMA modem; A base station number field of a destination or source of a message; A second length field indicating a length other than the layer, the primitive, the CDMA modem ID, the base station number, and its own field; A service_description field used for pre-processing; Source address field; A command field for distinguishing any one of a read / write / request / response of a message; A serial number field for recording the current message sequence of the sender; L_ length field indicating the number of actual transmission data; A system_information field in which the source or destination of the message identifies any one of a base station controller / base station / subscriber access device; A field for recording information about a system device of a source or a destination for a message; An item field for comparing the primitive with its own field when the message is from the base station operating system to confirm the validity of the message; A time field indicating the time of the message; A type field for identifying whether a data unit of a message is 1 byte or 4 bytes; In addition, the present invention provides a protocol for managing a base station, a base station controller, and a subscriber matching device of a wireless subscriber network system including message fields including fields of actual transmission data.

According to the protocol for the base station, base station controller, and subscriber matching device management of the wireless subscriber network system, it is not necessary to operate the data structure separately in each case, so even if the function is added, it can be easily implemented by simple coding. You can reduce the inconsistencies in the concepts that result from coding by the programmer.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 shows a protocol syntax of a wireless subscriber network system according to the present invention.

1 and 3, an interprocess communication (IPC) message field is transmitted and received between a base station 20-2n, a base station controller 30, and a subscriber access device 10 of a wireless subscriber network (WLL) protocol. Each function is as follows.

Destination Address field: consists of 3 bytes and contains the address of the peripheral processor (PP) or the main processor (MP).

Length 1 field: Total length excluding destination and first length field

Layer field: number of the task sending the message (0-32)

Primitive field: Defines the purpose and to-do of the message

1 byte CDMA modem ID (Lid) field

Base station number (RP_NUM) field: base station (RP) number (0-31) of the destination or source of the message

Length 2 field: This field is used to send / receive messages within one processor. The length is the length except for Layer, Primitive, Lid, RP_NUM and its own fields.

Service description (Service_Desc) field: Reserved field for pre-processing

Source field: source address

Command field: distinguish whether the message is Read / Write / Request / Response

Snf field: current message sequence sent to the sequence number field (hereinafter referred to as Snf)

L_Length field: Number of data actually sent

System information (Sys_Info) field: distinguish whether the source / destination of the message is RPC / RP / RIU

Rack Num field: The rack number of the source / destination of the message.

Shelf number field: Shelf number of the source / destination of the message

Unit Num field: Unit number of Source / Destination of message

Board Num field: Board number of Source / Destination of message

Port Num field: Port number of Source / Destination of message

Item field: Checks message validity by comparing this field with Primitive when the message comes from RPOM.

Date / Hour / Min / Sec field: Each time consists of 1 byte and the current time information of the transmission message

Type field: distinguish whether the data unit of the outgoing message is 1 byte or 4 bytes

Data field: actual transmission data consisting of 0 to 63 bytes

In the protocol syntax of the wireless subscriber network system according to the present invention, only a destination address field is composed of 3 bytes, and the remaining fields are composed of 1 byte.

The basic message processing method of the present invention is a stop and wait method. That is, it sends a message and waits for a response, and if it does not respond, it retries up to three times. However, since the stop and wait method increases overhead in the radio, a retry is performed on the subscriber access device (RIU: 10) in the base station operating device (RPOM). do. The item in the message data structure increases the validity of the message in accordance with a management information base (MIB).

In the case of call processing, the call processing task should determine the progress of the call by understanding the resource status of the system. When the main processor (RPC MP) of the base station controller 30 wants to determine the status of the resource, the primitive, destination address of the peripheral processor (PP), layer, command field, etc., to grasp the status of the task. Send by setting.

It compares the primitive, layer, command, system information, and item field of the message and checks whether it comes to itself, and responds to it by storing the given source address field and setting it as a response in the command field.

In the case of resource management, the peripheral processor (PP) and the main processor (MP) periodically exchange information for resource management, and the peripheral processor (PP) is managed by the peripheral processor (PP) to the main processor (MP) The resource status is periodically set by setting information on each idle, active, and board seal in the rack, shelf, board, and port according to a specified protocol. Should be reported. At this time, the sender and the receiver retransmit up to three times when transmission of the sent message fails by using a stop and wait method.

4 (a) to (c) show a protocol stack for operating a management protocol in a wireless subscriber network (WLL) system.

More specifically, FIG. 4A illustrates a protocol stack for transmitting and receiving a main processor MP and a peripheral processor PP in the base station controller RPC 30, and the physical layer PHY and the data link layer HDLC. A message exists above the -level Data Link control, and the message is included in the IPC header so that the message can be transmitted and received by in-process interprocess communication (IPC).

In addition, FIG. 4 (b) shows a protocol for transmitting and receiving from the base station (RP: 20-2n) to the base station controller (RPC: 30) or the base station controller (RPC: 30) to the base station (RP: 20-2n). In the stack, messages on the physical layer (PHY) and high level data link layer (HDLC) are transmitted from the main processor (MP) of the base station controller (RPC) 30 to the peripheral processor (PP), and the base station controller (RPC). The IPC message is loaded on the bus from the peripheral processor (PP) to the E1 (2.048 Mbps) leased line within the bus, and the physical layer (PHY) and the link access procedure-D (LAPD: Link Access) between E1-E1. Procedure Type D) is transmitted with an IPC message, and an IPC message is transmitted on a bus from the E1 dedicated line to the main processor (MP) of the base station (RP: 20-2n), thereby transmitting the IPC message. From the main processor (MP) to the peripheral processor (PP) on the physical layer (PHY) and the high-level data link protocol (HDLC). The IPC message is sent and the message is sent via the CDMA modem. Transmission from the base station controller (RPC) 30 to the subscriber access device (RIU: 10) is performed by a wireless subscriber network (WLL) conforming to the wideband code division multiple access (CDMA) standard, as shown in FIG. The protocol stack represents a protocol stack for the management protocol to operate, and IPC messages are transmitted through the CDMA modem on the physical layer (PHY), data link control (DLC) layer, and operational maintenance (O & M) layer.

FIG. 5 illustrates a protocol model operating in a task position in a wireless subscriber network (WLL) system. An application on the main processor (MP) of a task executing in the sending process processes a high level data link control (HDLC) format using another peripheral processor (PP) interprocess communication (IPC). In this case, it is stored in the Serial Input Output Buffer (SIO) at the Physical Layer (PHY) and transmitted to the High Level Data Link Control (HDLC) handling routine by internal interrupt. A message is sent to the application by an interprocess communication handling task.

Accordingly, by defining a data structure of a protocol message in a wireless subscriber network system, a standardized message management protocol of a base station, a base station controller, and a subscriber matching device can be proposed.

As described above, the protocol for management of the base station, base station controller, and subscriber matching device of the wireless subscriber network system according to the present invention defines standard syntax and semantics for message transmission and reception of the wireless subscriber network system. In this case, there is no need to operate the data structure separately in each case. Even if new functions are added, it can be easily implemented by simple coding. The structure can define the message communication protocol of the wireless subscriber network.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art can variously modify and change the present invention without departing from the spirit of the invention described in the claims below. You will understand.

Claims (6)

Subscriber Access Unit (RIU), Base Station (RP), Base Station Controller (RPC), Base Station Operator (RPOM) and Wireless Subscriber Network (WLL) in Wideband Code Division Multiple Access (WLL) System ) The syntax of the protocol for sending and receiving messages in a system with an exchange is A Destination Address field indicating an address of a destination Peripheral Processor (PP) or Main Processor (MP); A first length (Length 1) field indicating a total length excluding a destination address and a first length (Length 1); A Layer field indicating a number of a task sending a message; Primitive fields that define the purpose and to-do of the message; ID identifier (Lid) field of the CDMA modem; A base station number (RP_NUM) field of the destination or source of the message; A second length field indicating the length of the layer, the primitive, the CDMA modem ID, the base station number, and the remaining length except its own field; A Service_Description field used for pre-processing; Source address field; Command field for distinguishing any one of the read / write / request / response of the message; A serial number field (Snf) field for recording the current message sequence of the transmitting side; An L_Length field indicating the number of actual transmission data; A system_info (Sys_Info) field in which the source or destination of the message identifies any one of a base station controller / base station / subscriber access device; A field for recording information about a system device of a source or a destination for a message; An Item field for comparing a primitive with its own field when the message is from a base station operating apparatus (RPOM) to confirm the validity of the message; A time field indicating the time of the message; A Type field for identifying whether a data unit of the message is 1 byte or 4 bytes; And A protocol for management of a base station, a base station controller, and a subscriber matching device in a wireless subscriber network system, comprising a message field including fields of actual transmission data. The system of claim 1, wherein the field for recording information about the system device comprises: a rack number field; The Shelf Num field of the source or destination for the message; A Unit Num field of the source or destination for the message; A board number field of the source or destination for the message; And a port number field of a source or a destination for a message. 10. A protocol for management of a base station, a base station controller, and a subscriber matching device in a wireless subscriber network system. 2. The apparatus of claim 1, wherein the time field comprises: a date field; A Hour field indicating the time of the message; A Min field indicating the time of the message; And a sec field indicating a time of a message. 12. The protocol of claim 1, wherein the base station, the base station controller, and the subscriber matching device are configured in a wireless subscriber network system. The method of claim 1, wherein the message processing method between the base station (RP), the base station controller (RPC), and the subscriber matching device (RIU) is processed in a stop and wait manner, and a message is sent and a response is received. Protocol for management of base station, base station controller and subscriber matching device in wireless subscriber network system, characterized by retrying up to 3 times if there is no response 5. The wireless method of claim 4, wherein the retrying is performed by the base station operating apparatus (RPOM) for the subscriber access device (RIU) to prevent an increase in overhead in the wireless. Protocol for management of base station, base station controller and subscriber matching device in subscriber network system. The method of claim 4, wherein in the case of resource management, the peripheral processor (PP) and the main processor (MP) periodically exchange information for resource management, and the peripheral processor (PP) is the main processor (MP). The status of the resources managed by the peripheral processor (PP) according to the protocol specified in the rack (Rack), Shelf (Shelf), Board (Board), the port (port), respectively idle, operation, board seal / hernia information In the base station in the wireless subscriber network system characterized in that to report periodically to the base station operating system (RPOM) and the sender and the receiver retransmit up to three times when the transmission of the message sent by using the stop and standby method failed For managing base station controllers and subscriber matching devices.