KR0146558B1 - A double-interface in hlr for high speed communication - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a common line signaling device and an optical communication interface device for this location registration period, and more particularly, to an interface device capable of a fault-tolerant type which is a basic concept of high-speed communication and duplication of data as an interface in a parallel processing form. The present invention is a channel-to-channel communication unit for determining the path of the channel to determine the failure of the channel, and controls the switch and the data interface of the location registration period, the data transmitted in the inter-channel communication unit in the normal data transmission and the two A common line signaling device comprising an interface unit comprising at least one channel unit for simultaneously interfacing data transmitted from the location register obtained through two channels to two channels; The data obtained from the common line signal device are simultaneously received and temporarily stored in two channels, and then transmitted to the first and second stream device drivers, respectively. The output data of the interface process obtained from the first and second stream device drivers are respectively two. And a location register including first and second interface functional units which are transmitted to the interface unit in the common line signaling device via the channel.

Description

A double-interface in HLR for high speed commnication

1 is a block diagram of a conventional interface device in the present location register.

2 is a block diagram of an optical communication interface device for high-speed communication of the present location register according to the present invention.

3 is a flowchart illustrating an optical communication interface for high-speed communication of the present location register according to the present invention.

4 is a memory map diagram of a dual port RAM according to the present invention.

* Explanation of symbols for main parts of the drawings

1,14 Common line signaling device (CMP) 2,15: Main position register (HLR)

3, 16: Channel communication unit (CICU) 4, 5, 17, 18, 19: Channel unit (CCU)

6,7,20,21: optical cable 8,9,22,23: interface function unit (CIFU)

10,11,24,25: Stream device driver

12,13,26,27: Interface Process (CMPI)

8a, 9a, 22a, 23a: read only memory (ROM)

8b, 9b, 22b, 23b: Dual Port RAM (DPRAM)

The present invention relates to an optical communication interface between a common line signaling device (CCS No.7 MTP Processor (hereinafter referred to as CMP)) and a Home Location Registor (hereinafter referred to as HLR). (secondary) Redundancy method of optical communication interface device for high speed communication of this location register by implementing parallel processing type interface rather than channel concept so that both high speed data communication and Fault Tolerant, the basic concept of redundancy are satisfied It is about.

In general, in a code division multiple access (CDMA) mobile communication system, the HLR is a common line signaling device through an E1 (European) or T1 (North American) trunk from an exchange, as shown in FIG. (1) is connected, and the common line signal device 1 and the present location register 2 (HLR) are redundantly connected by an optical cable 6 (main channel, 7; sub channel), and the common line signal device (1) Internally, an interchannel communication unit (CMP) for interfacing data through an E1 or T1 trunk (hereinafter referred to as CICU) (3) and the interchannel communication unit (3) and the present location register (2). Channel unit (CMP Channel Unit) (4) (5) for the data interface between the (6) is provided, the interface for communication using the optical cable (6, 7) inside the location register (2) Function Unit (CMP Interface Function Unit: CIFU hereafter) Is called) (8) (9) and the stream device driver (10) 11 and the process interface 12, 13 is provided.

The operation of the conventional common line signal device configured as described above and the optical communication interface device of the location registration period will be described below.

First, when configuring the interface, the redundancy configuration is divided into the primary channel 6 and the secondary channel 7, and in a normal state, data transmission is performed through the primary channel 6 (Active), and the secondary channel (7). Is placed in a stand-by state in case of failure of the primary channel (6).

When the primary channel 6 is normal, the data transmitted from the T1 or E1 trunk is transferred to the primary channel 6 through the interchannel communication unit 3 and the channel unit 4 in the common line transmission device 1. (2), the location register (2) receives data from the interface function unit (8), temporarily stores the data in the dual port RAM (8b), and transmits the data to the stream device driver (10) via the VME bus. .

The stream device driver 10 transmits the transmitted data to the interface process 11, and the data of the user obtained in the interface process 11 reverses the E1 or T1 trunk via the common line signaling device 1. Is sent to the exchange.

In this process, if normal data communication is performed through the primary channel 6, and a failure occurs in the primary channel 6, the data transmission path is changed to the secondary channel 7, that is, the secondary channel 7 is activated to activate the primary channel ( 6) The data to be interfaced with the interface function unit 9, the stream device driver 11, and the interface process 13 through the sub-channel 7 to prevent data loss in case of failure of the primary channel (6). .

However, in the conventional common line signaling device and the optical communication interface device of this location registration period, the redundant structure is composed of a main channel and a sub channel. When the main channel is normal, the sub channel is always in the standby state. There is a problem in that the data transfer rate is low as well as the data transfer rate is reduced.

In other words, if data is simultaneously interfaced to the primary and secondary channels, the data transfer rate and data transfer rate can be relatively doubled. Therefore, the present invention is to solve the above problems of the prior art, the object of the present invention is to improve the data transfer capacity (including the amount and rate) by the duplex structure for the data interface in parallel processing form and duplication The present invention provides an optical communication interface device and a method for high-speed communication of the location register to enable a fault-tolerant type.

Technical means for achieving the object of the present invention is an optical communication interface device in which the common line signal device and the location register is connected to the two channels to interface the data, to determine the channel failure to set the data path The inter-channel communication unit controlling the data interface of the exchange and this location registration period, the data transmitted from the inter-channel communication unit during normal data transmission, and the data transmitted from the location register obtained through the two channels, A common line signal device comprising an interface unit including at least one channel unit for simultaneously interfacing to a channel; The data obtained from the common line signal device is simultaneously received and temporarily stored in two channels, and then transmitted to the first and second stream device drivers, respectively, and the output data of the interface process obtained from the first and second stream device drivers are respectively The present location register includes first and second interface function units which transmit to two interface units in the common line signaling device, respectively.

A method for achieving the object of the present invention includes the first step of resetting the channel configuration table and parameters of the dual port RAM and to determine whether the interface functional unit; A second step of determining whether an interface process has failed when the interface function unit is in an active state; If the interface process is also activated, a third process of extracting the parameters stored in the channel configuration table of the other channel and transmitting them to the channel unit of the common line signaling device enables data interface to the two channels simultaneously. Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

2 is a block diagram of an optical communication interface device for high-speed communication of the present location register according to the present invention. The common line signal device 14 and the present location register 15 are provided, and the inside of the common line signal device 14 is provided. An interchannel communication unit 16 for interfacing data with the exchange via an E1 or T1 trunk and a channel unit 17 and 18 connected to the interchannel communication unit 16 to connect respective channels are provided.

A high speed stream device capable of transmitting and receiving messages according to the NO.7 function with the first and second interface function units 22 and 23 for data communication using an optical cable (channel) inside the location register 15. Read data directly from the dual port RAMs 22b and 23b in the first and second interface function units 17 and 18 using the driver 24 and 25 and user process level write / read system calls. The first and second interface processes 26 and 27 are provided.

The operation and effects of the optical communication interface device for high-speed communication of the present location configured by the present invention configured as described above will be described with reference to FIGS. 3 and 4 as follows.

First, in the redundant configuration, the overall management of data path establishment or failure for the redundant configuration is managed by the inter-channel communication unit 16 in the common line signaling device 14.

That is, the data transmission path does not have a concept of a primary channel and a secondary channel. Instead, two channels 20 and 21 are connected to a primary channel, so that the No. 7 message to be transmitted from the common line signaling device 14 is divided into two channels ( 20) (21), the load sharing (Load Share) equally, and if a failure occurs in one channel should be routed to send a message to another channel.

Therefore, the inter-channel communication unit 16 in the common line signaling device 14 must know the failure status of each channel of the location register 15 to set the No.7 message transmission path. The communication unit 16 makes a status request for each channel to the first and second interface function units 22 and 23 of the location register 15 once every second.

Firmware 22a and 23a, which are operating systems of the first and second interface functional units 22 and 23, display a state of a channel and a state of another channel. And stores it in the dual port RAMs 22b and 23b and reports it to the inter-channel communication unit 16 in the common line signaling device 14.

The CCT consists of four parameters: the status for its channel, the status for the upper interface process, the status for the partner channel, and the status for the interface process of the partner channel. Is updated every second.

The interface function unit 22 is mounted on the VME backplane of the present location register 15 system, and is operated internally by an OS (firmware in ROM).

The main function is to store the No.7 message transmitted from the common line signaling device 14 to the dual port RAMs 22b and 23b so that the interface processes 26 and 27 pass through the stream device drivers 24 and 25. This message can be read, and messages stored in the dual port RAMs 22b and 23b through the stream device drivers 24 and 25 from the interface processes 26 and 27 are transferred to the common line signaling device 14. It serves to transmit.

3 is a flow chart for such an optical communication interface.

As shown, the process when the inter-channel communication unit 16 in the common line signaling device 14 makes a status request for each channel to the interface functional units 22 and 23 of the present location register 15. to be.

First, the CCT values stored in the dual port RAMs 22b and 23b are reset to 0 (S1) and S2. The boards of the interface function units 22 and 23, which are their own hardware, are searched for the parameters self. -Set the CIFU-status value to 1 (S3) (S4).

If it is an active state, the state of its interface processes 26 and 27 is retrieved and the parameter self-CMPI-status is set to 1 (S5) (S6). In addition, if the interface processes 26 and 27 are also active, these parameters are not updated and become 0. In the next step, the CCTs of other channels are requested (S7-S9). Transmission to the inter-channel communication unit 16 in 14 ends the response to the status request for each channel.

4 shows an address map MAP of the dual port RAMs 22b and 23b of FIG. 2, which has a total capacity of 8K bytes.

When the stream device drivers 24 and 25 write / read the No. 7 messages of the dual port RAMs 22b and 23b, the data to be transmitted is made up of slots, and one slot is 32 bytes.

In the dual port RAMs 22b and 23b, a state for each channel, that is, a CCT, is stored. As described above, the present invention eliminates the concept of primary and subchannels, and has the effect of doubling the data transmission capacity (data amount and transmission speed) by interfacing data using two channels in parallel processing. .

Claims (2)

An optical communication interface device in which a common line signal device and a main location register are connected by two channels to interface data, wherein the path of the data is determined by determining whether a channel is interrupted, and the data interface between the exchange and the main location registration period is controlled. An inter-channel communication unit and at least one channel unit for interfacing data transmitted from the inter-channel communication unit during normal data transmission and data transmitted from the location register obtained through the two channels to two channels simultaneously. A common line signal device including an interface unit; The data obtained from the common line signal device is simultaneously received and temporarily stored in two channels, and then transmitted to the first and second stream device drivers, respectively, and the output data of the interface process obtained from the first and second stream device drivers are respectively And a location register including first and second interface function units which are transmitted to an interface unit in the common line signaling device through two channels. Resetting the channel configuration table and parameters of the dual port RAM and determining whether an interface function unit has failed; A second step of determining whether an interface process fails if the interface function unit is activated; If the interface process is also activated, the third process of sequentially extracting the parameters stored in the channel configuration table of the other channel and transmitting them to the channel unit of the common line signaling device enables data interface to the two channels simultaneously. Optical communication interface method for high speed communication of the location register.