KR100347417B1 - Call traffic statistics data compression transmission method of CDMA mobile communication system - Google Patents

Abstract

The present invention compresses the amount of data through a new data structure that can control and optimize the number of packets variably according to the amount of data when transmitting call traffic statistics data collected from a control station in a CDMA mobile communication system to a BSM. The present invention relates to a method for compressing call traffic statistics data in a CDMA mobile communication system which reduces network load of GCIN and improves overall network performance of a control station system. In the state accumulated in the library, if there is a request for transmission of statistical data from the BSM, the statistical data accumulated in the library is formed into a packet of a new structure with a bit index added thereto, and transmitted to the BSM through GCIN of HDLC communication method. Then sent from the control station in the BSM Receiving a statistical data packet, analyzing a header, identifying what statistical data has been collected by referring to a bit index, and storing the identified statistical data in a statistical database. Dynamic configuration and compression, such as adding bit indexes to the packet headers, are sent to the BSM to reduce the amount of statistical data packets on the GCIN, thereby reducing the network load of the GCIN, and thus improving the overall network performance of the control station system. It is effective to be.

Description

Call traffic statistics data compression transmission method of CDMA mobile communication system

According to the present invention, when transmitting call traffic statistics data collected from a control station in a code division multiple access (CDMA) mobile communication system to a base station manager (BSM), the number of packets is controlled and adjusted according to the amount of data. A new data structure that can be optimized to compress and transmit the amount of data, thereby reducing the network load of the Global CDMA Interconnection Network (GCIN) and improving the overall network performance of the control station system. The present invention relates to a method for compressing and transmitting call traffic statistics data in a system.

In general, a control station in a CDMA mobile communication system collects measurement statistical data related to call traffic during call processing by a Call Control Processor (CCP) and transmits it to a BSM through a GCIN at regular intervals.

That is, as shown in Fig. 1, the CCOX 11 of the CCP 10 in the control station having the library 12 for accumulating the statistical data performs call processing and simultaneously performs a counting function of the statistical event.

The CCOX 11 continuously accumulates the number of specific events (e.g., call attempts, call failures) and the cause of the call failure in the call processing in a constant data field in the library 12. In time (currently 10 minutes), the CMMX 13, which is a statistics block in the CCP 10, copies the statistical values into a structure of the same format so that the count is no longer accumulated by the CCOX 11.

Subsequently, the CMMX 13 waits until a statistical data transmission request comes from the SMMX 31, which is a statistics block of the BSM 30, and then, if there is a data transmission request from the SMMX 31, the statistical data is converted into high level data. Link Control) packet is transmitted to the SMMX 31 of the BSM 30 through the GCIN 20.

Then, the SMMX 31 of the BSM 30 stores the transmitted statistical data in the statistical database 32.

As described above, the call traffic statistics data collected by the control station is transmitted to the BSM through GCIN, that is, HDLC communication. In this case, the control station-base station-sector-Frequency Assignment (FA) kit value per packet. Call traffic statistics data in a sub-cell unit is transmitted.

As shown in FIG. 2 and FIG. 3, the structure of the call traffic statistics data packet transmitted from the conventional control station to the BSM is statically defined as a structure statement.

That is, the statistical data packet has about 100 bytes of pure statistical data (c) except for the HDLC common header (a) and the additional packet header (b), which is an additional header according to its own protocol. The excitation data field lists each tuple of call traffic statistics without any data compression.

As a result, the control station transmits from the control station to the BSM with a space of a few bytes with the value of 0 set even for the call processing field that does not actually occur, and this large amount of data increases the network load of the GCIN. .

That is, the amount of data generated at regular intervals for transmission from the conventional control station to the BSM is sufficient to reduce the overall network speed of the GCIN.

In addition, if the number of statistics items increases more than the present time, another packet per control station-base station-sector-FA is required, and thus more empty space exists in the packet.

In addition, although the GCIN is mainly responsible for transmitting information between control stations, in recent years, GCIN performs a role of transmission of call processing data due to the implementation of a function such as soft handoff between control stations. This is important, and there is an urgent need for efficient data transmission on GCIN.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its object is to provide unconditionally one control station-base station-sector-FA when transmitting call traffic statistics data collected from a control station in a CDMA mobile communication system to a BSM. Instead of allocating data packets and transmitting them in a static structure, GCIN compresses and transmits the amount of data through a new data structure that allows the control station to adjust and optimize the number of packets according to the amount of data and send them to the BSM. The purpose of the present invention is to provide a method for compressing call traffic statistics data in a CDMA mobile communication system that can reduce the network load of the GCIN to improve the data transmission performance of the GCIN and improve the overall network performance of the control station system.

1 is a block diagram of a CDMA mobile communication system for collecting and transmitting general call traffic statistics data;

2 is a diagram showing the structure of a call traffic statistics data packet transmitted from a conventional control station to a BSM;

3 is a diagram showing an example of a conventional termination call traffic statistics data structure;

4 is a diagram showing the structure of a call traffic statistics data packet transmitted from a control station to a BSM according to the present invention;

5 is a flowchart illustrating the operation of a method for compressing and transmitting call traffic statistics data in a CDMA mobile communication system according to the present invention;

<Description of the symbols for the main parts of the drawings>

10: CCP 11 in the control station: CCOX

12: library 13: CMMX

20: GCIN 30: BSM

31: SMMX 32: Statistics Database

In the CDMA mobile communication system of the present invention for achieving the above object, the call traffic statistics data compression transmission method includes a request for transmission of statistical data from the BSM while the control station collects statistics data at regular intervals and accumulates them in a library. If there is a statistical data accumulated in the library in the form of a packet of a new structure with a bit index is added to transmit to the BSM via GCIN of HDLC communication method, the BSM receives the statistical data packet transmitted from the control station in the header It is characterized in that to determine what statistical data has been collected by referring to the bit index and to store the identified statistical data in a statistical database.

Hereinafter, a method of compressing and transmitting call traffic statistics data in a CDMA mobile communication system according to the present invention will be described in detail with reference to the accompanying drawings.

4 is a diagram illustrating a structure of a call traffic statistics data packet transmitted from a control station to a BSM according to the present invention, wherein a 4-byte physical destination address and a 4-byte physical source address are shown. , 1 byte of message type, 1 byte of message length, 2 bytes of Destination Process ID, 2 bytes of Source Process ID, 2 bytes of Signal ID, 2 bytes of CRC HDLC common header A, 2 bytes of checksum data, 2 bytes of packet sequence number, 1 byte of message ID, 1 byte of BCP ID, 1 byte of SIP ID, Statistics packet header (B) consisting of 1 byte No Resp Flag, traffic statistics header (C) consisting of sector ID, FA number (Number), 8-bit bit index (D), t_att, t_alert , 33rd It consists of the statistical data E which consists of the value of a statistical item and statistical data.

In the present invention, in order to dynamically construct a statistical data packet structure defined by a statically structured statement, the traffic statistics header (C) consisting of a sector ID and a FA number, as shown in FIG. A bit index D as many as the number of statistics items is added.

The bit index (D) is for indicating which statistical item actually occurred, and data after the bit index (D) can be interpreted as this index until the next header is read.

At this time, the bit index (D) can be changed according to the maximum number of items of call traffic statistics, and currently 8 bytes are sufficient, so that 8 bits of 64 bits are set.

Next, a call traffic statistics data compression transmission method in a CDMA mobile communication system according to the present invention will be described with reference to the operation flowchart shown in FIG. 5.

First, the CCOX of the CCP in the control station performs call processing and simultaneously counts statistical events to accumulate the number of specific events occurring in the call processing process and the cause of the call failure in a constant data field in the library (S1). ).

Subsequently, when a certain period of time is reached, the CMMX in the CCP copies the statistical values to the structure of the same format so that the count is no longer accumulated by the CCOX (S2).

Then, the CMMX waits for a request for transmission of statistical data accumulated for a predetermined period of time from the SMMX in the BSM (S3), and if there is a request for transmission of statistical data from the SMMX, it searches for a library, i.e., a field with statistical data. Finds a field with data in a nonzero data record, sets the corresponding bit index, and appends the corresponding statistical data value to the back of the packet (S4).

Through the same operation as in step S4, call traffic statistics data for transmission from the control station to the BSM is made in the structure of the packet shown in FIG. 4, and when the packet size reaches a predetermined size, the statistics data packet is transferred to the HDLC communication method. Transmit to SMMX in BSM through GCIN (S5).

Then, the SMMX in the BSM receives the statistical data packet transmitted from the CMMX, and then analyzes the header of the statistical data packet to extract the message ID, BCP ID, SIP ID, sector ID, FA number, and the like. By performing a bit operation with reference to the bit index of the bit, it is checked whether any statistical data is collected (S6), and then stored in the statistical database (S7).

As described above, the present invention provides a statistical data packet on the GCIN by dynamically configuring and compressing the packet by adding a bit index to the packet header without transmitting the statistical data packet in a static structure in the control station. By reducing the amount of GCIN, the network load of GCIN is reduced, so that other important data packets can be transmitted more smoothly on GCIN to improve the overall network performance of the control station system.

In addition, by bringing the performance improvement under the network environment as described above, there is an advantage that it is possible to reduce the additional development cost and equipment cost for improving the GCIN network performance.

Claims (2)

A first step of performing call processing in CCOX of a CCP in a control station and accumulating statistical values of various events occurring in a call processing process in a data field in a library through a counting function of statistical events; A second step of copying statistical values to a structure of the same format so that counts are no longer accumulated by the CCOX in the CMMX in the CCP when a certain period of time is reached during the execution of the first step; After performing the second step, the CMMX waits for a request for transmission of statistical data accumulated for a certain period of time from the SMMX in the BSM, and if there is a request for transmission of statistical data from the SMMX, searches the library and searches for a data field in the record with statistical data. A third step of creating a statistical data packet according to the statistical data packet structure for transmission from the control station to the BSM by setting a corresponding bit index and attaching the corresponding statistical data value to the back of the packet; A fourth step of transmitting the statistical data packet to the SMMX in the BSM through the GLC of the HDLC communication method as soon as the statistical data packet is completed in the third step; A fifth step of receiving a statistical data packet transmitted from the CMMX of the fourth step in the SMMX, analyzing a header, and identifying which statistical data have been collected through a bit index; And transmitting the statistical data identified in the fifth step to a statistical database in the BSM. 6. 2. The structure of claim 1, wherein the structure of the statistical data packet for transmission from the control station to the BSM comprises: 4 bytes of physical destination address, 4 bytes of physical source address, 1 byte of message type, 1 byte of message length, 2 HDLC common header (A) consisting of a destination process ID of 2 bytes, a source process ID of 2 bytes, a signal ID, and a CRC of 2 bytes, A statistical packet header (B) consisting of two bytes of body data, two bytes of packet sequence number, one byte of message ID, one byte of BCP ID, one byte of SIP ID, and one byte of No Resp Flag; A traffic statistics header (C) comprising a sector ID and a FA number, A bit index (D) for indicating which statistical item has occurred, comprising the maximum number of bytes of statistics items; and t_att, t_alert, statistical data (E) comprising the value of the 33rd statistical item and the statistical data.