KR970006782B1 - Base station controller network - Google Patents

Abstract

A network for the base station controller in the CDMA mobile system (CMS) where connects to the several processors in order to communicate each processor using the ring cable and the code division multiplex interconnection network where transmits/receives the inter processor communication (IPC) message.

Description

Base station controller network of code division multiple access mobile communication system

1 is an overall block diagram of a base station controller network in accordance with the present invention.

2 is a detailed block diagram of a CIN according to the present invention.

* Explanation of symbols for main parts of the drawings

11: CIN 12: HCIP

13: BSM 14: ACP

15: link matching device 16: CCP

17: TSB (0-31) 21: Management Processor

22, 23: node (O-N) 24: E1 matching node

25: E1 matching device

The present invention relates to a control device network, and more particularly, to a base station control device network of a CMS (CDMA Mobile System).

In a CMS, a base station refers to a radio station established on the land and not moving to communicate with a land mobile station or by a relay of a mobile relay station.

The base station is composed of a radio transceiver, an antenna, a control device, a data terminal, and a power supply device. The base station connects the mobile terminal to the mobile switching center by transmitting and receiving various signals in a wireless section while controlling and monitoring the mobile terminal.

Among the components of the base station, the control device serves as a means of access between each element of the base station and the cell operator, management of base station operation, management of service state of hardware and software in the base station, resource allocation and configuration for call traffic, It collects information on base station operation, monitors base station operation, and monitors subsystems associated with detected failures and provides some timing.

In order to improve the quality of the mobile communication service, there is a problem that the exchange of messages between multiple processors constituting the base station controller must be efficiently realized.

Accordingly, the present invention uses a CDMA Interconnection Network (hereinafter referred to as CIN) and a link cable that are responsible for transmitting and receiving high-speed Inter Processor Communication (hereinafter referred to as IPC) messages. An object of the present invention is to provide a CMS base station controller network in which a plurality of processors are connected to enable communication with a processor.

The present invention to achieve the above object is a CIN responsible for the communication between a plurality of processors; A management processor HCIP in charge of managing the boards of each node and the E1 link matching device constituting the CIN; A BSM in charge of program loading, configuration and supervisory control in each processor constituting the base station controller; An ACP for collecting and managing alarms of a base station controller; An E1 link matching device for transmitting a message of an IPC in accordance with an E1 PCM transmission form to deliver a communication message of each processor connected to the CIN to a base station located at a remote location without distance limitation; A CCP responsible for call control and software handoff processing in the mobile communication exchange period with the base station; And a TSB which is responsible for distribution of traffic data, connection and relay functions, transmission and reception of voice information with the mobile station, and processing of protocol messages.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

1 is a block diagram of a base station control apparatus according to the present invention, 11 is CIN, 12 is High Performance IPC Processor (HCIP), 13 is Base Station Management (BSM), 14 is Alarm Control Processor (ACP), 15 is Link A matching device, 16 denotes a Call Control Processor (CCP), 17 denotes a Transcoding and Selector Bank (TSB) (0-31), respectively.

Hereinafter, each component will be described in detail with reference to FIG.

The CIN 11 is a management processor 12, 21 which is responsible for initializing and managing the nodes 22, 23 and the node and the E1 matching device in order to process communication between all the processors constituting the base station controller. It is composed.

The management processor (12, 21) uses a processor that supports the MC68302 multi-protocol protocol to match each node and the E1 interface to initialize, the CIN configuration board to interface with the interface and the system for monitoring the bus and the system bus. It is composed of a matching unit for providing a clock and a synchronization signal.

The BSM 13 is a block that performs initialization, configuration, and monitoring functions of the processors (CCP, TSBO-TSB31, ACP) constituting the base station controller, and the code downloading and related data of each subsystem of the base station and the base station controller. In addition to providing base management and operational parameters, it is responsible for alarm collection processing, various statistics processing, and operator matching functions of each subsystem.

The ACP 14 is a processor that controls the alarm of each subsystem. The ACP 14 is responsible for collecting hardware alarms of the subsystems and transmitting them in the form of IPC messages to the BSMs matched to the nodes of the CIN.

The link matching device 15 transmits the RS422 type IPC data transmission type that enables short-range communication for exchange of information with a base station system (BTS) that is remotely located without limitation to the processors in the CIN. This is a device to convert.

The CCP 16 performs all call control functions of the base station controller and receives initial loading of each subsystem from the BSM 13 and provides them when there is a loading request in each subsystem. (17) and a matching part for exchanging CDMA related information in the exchange period and a block for controlling soft handoff.

TSB 0 to 31 (17) are blocks for performing vocoder function for voice related to CDMA communication, changing the conversion ratio for data, selecting for soft handoff, and power control function for communication data received at different distances. It is composed.

2 is a block diagram showing a CIN configuration according to the present invention.

Hereinafter, a detailed operation method of the present invention will be described with reference to FIG.

The management processor 21 initializes and monitors the states of the nodes in the CIN through the maintenance channel M_Bus (Maintenane Bus) related to the node block constituting the CIN, and communicates with the nodes through a dedicated cable (U_Link Cable). It is responsible for communicating the states of nodes in CIN with the superprocessors, and performs control and fault alarm processing function for node (ON) and E1 matching device in CIN. The fault alarm receives the fault signal connected to the system bus from the alarm processor in the management processor and compares it with the first data. If the data differs from each other, it receives the fault signal connected to the CPU of the management processor and compares it with the first data. If the data is different from each other, it is delivered to the management processor's CPU as an interrupt so that the management program can immediately identify the corresponding node.The management processor has a maintenance channel (M_Bus) to manage the system. In order to send and receive the data related to initialization and maintenance of each other, it is operated by SDLC protocol of primary / se condary mode. This communication enables the management processor to grasp the control and status of each node, and the communication speed. Is configured to allow up to 1 Mbps.

The E1 matching bus (T_Bus) for initializing the E1 matching device 25 and accessing data includes 8 bits of data (0-7), 16 bits of addresses (a1-a16), a data transmission confirmation signal (DACK), and a data valid signal. (DS), etc., and its main function is a bus to perform maintenance by the initialization and periodic access of the E1 matching device.

The data bus (D_Bus) is a common bus that is connected to each node in the CIN. The data bus (D_Bus) is configured to exchange messages between nodes. Through the data bus, the data bus is tripled to maintain the high reliability of the system. Is implemented to be handled by the bus supervisory block in the management processor. A node that intends to transmit an IPC message transmits a message in the form of a bit stream along with a transmission synchronization clock, with a transmission speed of 80 Mbps.

D_Bus arbitration is required for data transmission of nodes commonly connected to the data bus. The ablation of nodes follows a kind of free token round robin method, and the management processor 11 transmits signals necessary for the arbitration of these nodes through the data bus. Supply was made.

The node (ON) has a counter value of each node in the system synchronization signal and a clock inputted through the data bus, and this counter value is set to a value capable of transmitting an IPC message to the data bus according to a predetermined value of each node. When the counter value and the transmission message request signal coincide, the message is transmitted to occupy the data bus. In this case, each node's counter stops the counter operation when any one node occupies the data bus. have.

Therefore, the counters of each node are configured to start again from the beginning with all counter values initialized to 0 according to the system synchronization signal (FS) generated from the management processor. The number of accommodating nodes per board is 8 nodes.

The E1 matching node 24 is generally the same as the other nodes, except that the E1 matching node is joined through the system backboard in a one-to-one correspondence with the E1 matching device, allowing for up to 8E1 matching.

The node-to-node connection with the E1 matching device is connected to the IPC message transmitting / receiving matching unit of the node instead of the message cable, so that the IPC message can be transmitted regardless of the distance, so that the E1 matching device is converted into the PCM transmission form.

The base station controller configured as described above may be configured to be easily expandable by changing the configuration of the CIN according to the capacity of the system, and a CMS (CDMA Mobile System) that needs to exchange high-speed communication messages between the processors. There is an application effect to the implementation of the base station control device of

Claims (2)

A CIN 11 configured by the management processor 21, the nodes 22 and 23, the E1 matching node 24, and the E1 matching device 25 to be responsible for communication between a plurality of processors; A management processor HCIP (High Perfomance IPC Processor) 12 that manages each node and the E1 link matching board constituting the CIN 11; A base station management (BSM) 13 that is responsible for program loading, configuration, and supervisory control functions for each processor constituting the base station controller; An alarm control processor (ACP) 14 for collecting and managing alarms of the base station controller; An E1 link matching device (15) for transmitting a message of an IPC in accordance with an E1 PCM transmission form in order to deliver a communication message of each processor connected to the CIN (11) to a base station located at a remote location without distance limitation; A Call Control Processor (CCP) 16, which is responsible for call control and software handoff processing in the mobile communication exchange period with the base station; And a transcoding and selector bank (TSB) 17, which is responsible for distribution of traffic data, connection and relay functions, transmission and reception of voice information with a mobile station, and processing of protocol messages. Base station controller network. The system of claim 1, wherein the CIN (11) comprises: a management processor (21) for managing the nodes (22, 23, 24) and the E1 matching device (25) matched to the CIN; Nodes 22 and 23 that are responsible for transmitting and receiving communication IPC messages; And an E1 matching device (25) for converting an IPC message to an E1 PCM transmission type for communication with a base station in a remote area.