KR100549128B1 - Forward and reverse signal processing device of the multi-sector channel card - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a forward and reverse signal processing apparatus of a multi-sector processing channel card.

2. The problem to be solved by the invention

In the present invention, in processing the forward and reverse signals of a CDMA mobile communication base station channel card, the forward and reverse signals of a multi-sector are transmitted through a sector determined selectively among a plurality of sectors. It is an object of the present invention to provide a forward and reverse signal processing apparatus capable of processing forward and reverse signals of four or more multi-sectors.

3. Summary of Solution to Invention

The invention comprises: storage means for storing first and second sector selection signals for determining sectors for forward signal transmission and third and fourth sector selection signals for determining sectors for forward signal transmission; At least one forward channel processing means for converting the packet data into a forward signal of a transmission format and then transferring the converted forward signal to a sector selected by the first sector selection signal; The channel card control means for changing the contents of the first to fourth sector selection signals, controlling the conversion and switching operations of the reverse signal, and controlling the signal conversion and switching operations of at least one forward channel processing means; At least one forward switching means for switching the forward signal transmitted from the at least one forward channel processing means to a sector selected by the second sector selection signal; And at least one forward transmission processing means for digitally synthesizing the forward signals switched to the particular sector by at least one forward switching means, and then converting the digital forward synthesized forward signals into a serial signal and transmitting the serial signals.

4. Important uses of the invention

The present invention is used in a channel card for multi-sector processing.

Multisector, Channel Card, Forward Signal, Reverse Signal

Description

FORWARD AND REVERSE SIGNAL PROCESSING DEVICE OF THE MULTI-SECTOR CHANNEL CARD}             

1 is a configuration of a forward signal processing apparatus of a conventional mobile communication base station channel card.

2 is a block diagram of a reverse signal processing apparatus of a conventional mobile communication base station channel card.

Figure 3 is a configuration diagram of an apparatus for forward processing of a multi-sector processing channel card according to the present invention.

4 is an explanatory diagram of operations of the sector selection control register and the switching module of FIG. 3;

5A to 5C are explanatory diagrams illustrating operations of the sector selection control register and the switching module of FIG. 3 when a mobile station communicating with a specific channel element performs a soft handoff.

Figure 6 is a configuration diagram of an apparatus for reverse signal processing of a multi-sector processing channel card according to the present invention.

7 is an operation explanatory diagram of a sector selection control register and a switching module of FIG. 6;

8A to 8C are explanatory diagrams of operations of the sector selection control register and the switching module of FIG. 6 when a mobile station communicating with a specific channel element performs soft handoff.

Explanation of symbols on the main parts of the drawings

310: channel card control processor 321 to 32n: channel element

330 and 350: sector select control registers 341 to 34n: switching module

361 to 36n: forward digital signal synthesizer

371 to 37n: bottle / serial converter

The present invention relates to a forward and reverse signal processing apparatus for a mobile communication base station channel card using a code division multiple access (CDMA) scheme, and more particularly to four or more multisectors in a CDMA mobile communication base station channel card. The present invention relates to a signal processing apparatus capable of processing forward and reverse signals.

1 is a configuration diagram of a forward signal processing apparatus of a conventional mobile communication base station channel card, which includes a channel card control processor 101, a sector selection control register 102, channel elements FCE1 to FCEn, and a forward digital signal. It consists of a forward digital signal synthesizer 108 composed of signal synthesizers 105 to 107.

Here, the channel elements FCE1 to FCEn each include three forward signal processing modules 104 for processing a forward signal of one sector, and determine a forward signal input from the three sectors according to the value of the sector selection control register. It is connected to the forward signal processing module 104 to perform the signal processing by the code division multiple access method.

The operation of the forward signal processing apparatus of the conventional base station channel card having the structure as described above is as follows.

The channel card control processor 101 generates a signal for controlling the channel elements FCE1 to FCEn and changes a value of the sector selection control register 102 to determine a sector to be processed by the channel elements FCE1 to FCEn. Perform.

Each of the channel elements FCE1 to FCEn receives packet data as input and performs signal processing according to the CDMA method, and outputs the result to a sector determined by the value of the sector selection control register 102.

The forward digital signal synthesizer 108 combines the signals output from the channel elements FCE1 to FCEn by sectors through the forward digital signal synthesizers 105 to 107 and outputs them.

However, in the forward signal processing apparatus of the conventional mobile communication base station channel card as described above, since the channel element and the forward digital signal synthesizer are fixed to process the forward signals of three sectors, the forward signals of four or more multi-sectors are received. There is a problem that can not be used, and thus can not be used as a channel card for multi-sector base station.

2 is a configuration diagram of a reverse signal processing apparatus of a conventional mobile communication base station channel card, and includes a channel card control processor 201, a sector selection control register 202, and channel elements CE1 to CEn. do.

The operation of the reverse signal processing apparatus of the conventional base station channel card having such a structure will be described below.

The channel card control processor 201 determines a sector to be processed by each channel element BCE1 to BCEn by generating a signal for controlling each channel element BCE1 to BCEn and changing a value of the sector selection control register 202. It plays a role.

The channel elements BCE1 to BCEn each include three uplink signal processing modules 203 for processing uplink signals of one sector, and the uplink signals inputted from the three sectors are determined according to the value of the sector selection control register. The signal processing module 203 is connected to perform signal processing by a code division multiple access method.

However, in the reverse signal processing apparatus of the conventional mobile communication base station channel card as described above, since only signals transmitted from three sectors can be input, the reverse signals of four or more multi-sectors cannot be processed. There was a problem that cannot be used as a channel card for a multisector base station.

Accordingly, the present invention has been made to solve the above problems, and in processing forward and reverse signals of a CDMA mobile communication base station channel card, multiple sector forward and reverse signals are selectively determined among a plurality of sectors. It is an object of the present invention to provide a forward and reverse signal processing apparatus capable of processing forward and reverse signals of four or more multi-sectors while allowing three sectors to be transmitted through a sector.

The present invention for achieving the above object, in the forward and reverse signal processing apparatus of the channel card, the first and second to change the content of the signal by the channel card control means and to determine the sector for transmitting the forward signal Storage means for storing third and fourth sector selection signals for determining sectors for transferring the sector selection signal and the reverse signal; Under the control of the channel card control means, packet data for transmission through a multi-sector is converted into a forward signal of a transmission format of a code division multiple access method, and then the converted forward signal is converted into a first sector selection signal of the storage means. At least one forward channel processing means for delivering to the sector selected by the apparatus; The channel for changing contents of the first to fourth sector selection signals stored in the storage means, controlling conversion and switching operations of reverse signals, and controlling signal conversion and switching operations of the at least one forward channel processing means. Card control means; At least one forward switching means for switching a forward signal transmitted from said at least one forward channel processing means to a sector selected by a second sector selection signal of said storage means; And at least one forward transmission processing means for digitally synthesizing the forward signals switched to the specific sector by the at least one forward switching means, and then converting the parallel synthesized forward signals into a serial signal and transmitting the serial signals.

In addition, the present invention, the reverse signal processing apparatus of the channel card, at least one serial / parallel conversion means for converting the reverse signals received in parallel to a serial signal; Storage means for storing first and second sector selection signals for changing the contents of the signal by the channel card control means and for determining a sector for transmitting the reverse signal; At least one reverse switching means for switching a reverse signal transmitted from said at least one serial / parallel conversion means to a sector selected by a first sector selection signal of said storage means; Under the control of the channel card control means, after converting the reverse signal transmitted through the sector selected by the at least one reverse switching means into packet data, the converted packet data is selected by the second sector selection signal. At least one reverse channel processing means for transferring to the sector; And the channel card control means for changing contents of the first and second sector selection signals stored in the storage means and controlling signal conversion and switching operations of the at least one reverse channel processing means.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

3 is a configuration diagram of an apparatus for processing a forward signal of a channel card for multi-sector processing according to the present invention.

As shown in FIG. 3, in the forward signal processing apparatus of the channel card of the present invention, the forward signal processing unit of the channel card includes a channel card control processor 310, a plurality of channel elements 321 to 32n, A sector selection control register 330 for controlling channel elements 321 to 32n of the plurality of switches, and a plurality of switching modules 341 to 34n for switching data transferred from the plurality of channel elements 321 to 32n. And a plurality of sector selection control registers 350 for controlling the plurality of switching modules 341 to 34n and a parallel signal synthesized by synthesizing the digital signals transmitted from the plurality of switching modules 341 to 34n. Forward digital signal synthesizers 361 through 36n and parallel / serial converters 371 through 36 for converting parallel signals transmitted from the plurality of forward digital signal synthesizers 361 through 36n into serial signals. 37n).

Here, the channel elements 321 to 32n each include three forward signal processing modules 301 which process forward signals of one sector, and store forward signals input from the three sectors in the sector selection control register 330. It is connected to the forward signal processing module 301 determined according to the value, so as to perform signal processing by a code division multiple access method.

In addition, the switching modules 341 to 34n are substantially embedded in the channel elements 321 to 32n.

The operation of the forward signal processing apparatus of the present invention having the structure as described above will be described in detail as follows.

The channel card control processor 310 generates a control signal for controlling the channel elements 321 to 32n, respectively, and changes the storage value of the sector selection control register 330 to process the sectors to be processed by the channel elements 321 to 32n. And change the stored value of the sector selection control register 350 to control the switching operation of the switching modules 341 to 34n.

The channel elements 321 to 32n respectively output the outputs of the three forward signal processing modules 301 and the forward signal processing modules 301 which are responsible for forward signal processing of one sector to corresponding register values of the sector selection control register 330. And the switching modules connected to the output pins so that a forward signal of up to three sectors is processed by a code division multiple access scheme, and the result is divided into sectors determined by the value of the sector selection control register 330. It plays a role.

The switching modules 341 to 34n respectively embedded in the channel elements 321 to 32n respectively transmit forward signals of three sectors output from the connected channel elements by the value of the sector selection control register 350 among the n sectors. A sector to be determined is connected, and a sector which is not connected to the output of the channel element among n sectors serves to ground to '0'.

Forward digital signal synthesizers 361 to 36n each serve to digitally synthesize forward signals to a particular sector that are switched through n switching modules 341 to 34n. In this case, the digitally synthesized signals are four times n.

The parallel / serial converters 371 to 37n respectively convert the forward signals I0, I1, Q0, and Q1 to the specific sectors transmitted in parallel from the corresponding forward digital signal synthesizers into serial signals, thereby implementing a channel card. It reduces the number of output pins.

FIG. 4 is an explanatory diagram of the operation of the sector selection control register and the switching module of FIG. 3. The sector selection control register 420 and the switching module embedded in the channel element 410 for controlling the channel element 410 are described. 430 and an operation of switching the output of the three sector processing channel element 410 to n sector outputs by the sector selection control register 440 and the switching module 430 for controlling the switching module 430. To illustrate.

More specifically, the outputs of the three forward signal processing modules inside the channel element 410 are called Tx1, Tx2, and Tx3, respectively, and the outputs of the three sectors exiting from the channel element 410 are Tx_Alpha, Tx_Beta, and Tx_Gamma, respectively. The outputs to the n sectors from the switching module 430 are referred to as Tx_Sec1, Tx_Sec2, and Tx_Secn, respectively.

At this time, the mapping from the outputs Tx1, Tx2 and Tx3 of the three forward signal processing modules to the outputs Tx_Alpha, Tx_Beta and Tx_Gamma of the channel element 410 is determined by the value of the sector selection control register 420 for the channel element 410 control. Is determined.

As shown in FIG. 4, when the value of the second register of the sector selection control register 420 for controlling the channel element 410 is Beta, Alpha, or NULL, Tx1 of the second channel element is Tx_Beta, and Tx2 is Tx_Alpha. Connected, and Tx3 is not used. Here, the sector selection control register 420 for controlling the channel element 410 is controlled using a commercial method that is already used.

In addition, the mapping from the outputs Tx_Alpha, Tx_Beta, and Tx_Gamma of the channel element 410 to the outputs Tx_Sec1, Tx_Sec2, ..., Tx_Secn of the switching element 430 is a sector selection control register 440 for the control of the switching module 430. Is determined by the value of.

Also, if the second register of the sector selection control register 440 is 4, n, and NULL, the second switching module connects Tx_Alpha to Tx_Sec4 and Tx_Beta to Tx_n, and the remaining outputs of the switching module 440 are '0'. To earth.

As such, the sector selection control register 440 is composed of the same number of registers as the switching module 430, and each register should be capable of storing at least the number of bits obtained by the following [Equation 1].

Number of bits = 3 x [log ₂ (n)]

Here, n means a minimum integer of 2 or more.

5A to 5C are explanatory diagrams illustrating an operation of the sector selection control register and the switching module of FIG. 3 when the mobile station communicating with a specific channel element performs a soft handoff, and FIG. 5A is a soft direction in one direction. FIG. 5B is a diagram illustrating a soft handoff add, and FIG. 5C is a diagram illustrating a soft handoff drop.

As shown in the figure, when the mobile station moves from three sectors to n sectors, the channel element outputs a forward signal in three sectors, and if n sectors are soft added, three sectors and n sectors. When three sectors are soft dropped, only n sectors should be printed.

At this time, when the value of the sector selection control register for controlling the channel element is converted to [Alpha, NULL, NULL], [Alpha, Beta, NULL], and [NULL, Beta, NULL], control of the switching module is performed. The value of the sector selection control register for the above should be set to [3, NULL, NULL], [3, n, NULL] and [NULL, n, NULL].

The sector selection control register 1, the sector selection control register 2, the channel element, and the concept of a method of mapping the output of the three sector support channel element by the switching module to n sectors are illustrated. If the value of the J th register of the control register 1 is [Alpha, NULL, NULL] and the value of the J th register of the sector control register 2 is [3, NULL, NULL], the first processing unit of the J th channel element is The output is connected to Tx_Alpha, which is in turn connected to Tx_Sec3 by the switching module. In this state, when n sectors are added by soft handoff, the channel card control processor sets the value of the J th register of the sector selection control register 1 to [Alpha, Beta, NULL], and the J of the sector selection control register 2. The value of the first register is changed to [3, n, NULL], whereby the Jth channel element connects the output of the first processing unit to Tx_Alpha, the output of the second processing unit to Tx_Beta, and the switching module connects Tx_Alpha. Connect Tx_Beta to Tx_Secn in Tx_Sec3.

6 is a configuration diagram of an apparatus for reverse signal processing of a multi-sector processing channel card according to an embodiment of the present invention, which is a block diagram of a reverse signal processing apparatus for a channel card capable of processing reverse signals of up to n sectors. A function of receiving serialized baseband frequency digital signals transmitted through n sectors, appropriately distributing them to each channel element, and outputting packet data obtained by processing by code division multiple access at each channel element. Perform.

Referring to FIG. 6, the reverse signal processing apparatus of a channel card according to the present invention controls the channel card control processor 610, n channel elements 621 through 62n, and channel elements 621 through 62n. Sector selection control register 630, n switching modules 641 through 64n, sector selection control register 650 for controlling switching modules 641 through 64n, and n serial / parallel converter 661. To 66n).

Here, the channel elements 621 to 62n each include three uplink signal processing modules 601 for processing uplink signals of one sector, and the uplink signals input from the three sectors are stored in the sector selection control register 630. It connects to the reverse signal processing module 601 determined according to the value, and performs signal processing by the code division multiple access method.

Referring to the operation of the reverse signal processing apparatus of the channel card according to the present invention having the structure as described above in detail according to the flow of signals as follows.

The serial / parallel converters 661 to 66n respectively convert the serially inputted backward reception signals Rx_Sec1 to Rx_Secn into parallel signals in order to reduce the physical size of the input terminal by reducing the number of input pins of the channel card. The reverse receiving signal is converted into the input to the corresponding input of the switching module.

The switching modules 641 to 64n are each controlled by a control value transmitted from the sector selection control register 650 among digital signals of reverse baseband frequency transmitted through n sectors paralleled by the corresponding parallel / parallel converter. The reverse signal of the sector to be determined is transmitted to the input terminal of the corresponding channel element.

The channel elements 621 through 62n each include three reverse signal processing modules 601 which are in charge of reverse signal processing of one sector and a switching module which is controlled by the sector selection control register 630. The reverse signal transmitted through the corresponding switching module among the reverse signals transmitted through the sectors is connected to the reverse signal processing module 601 determined by the control value of the sector selection control register 630, and the internal reverse signal. Responsible for outputting packet data generated by the processing module 601.

The channel card control processor 610 generates a signal for controlling the channel elements 621 to 62n and changes the control value of the sector selection control register 630, thereby determining the sector to be processed by the channel elements 621 to 62n. By changing a function and a control value of the sector selection control register 630, a function of controlling the switching operation of each switching module is performed.

FIG. 7 is an operation explanatory diagram of the sector selection control register and the switching module of FIG. 6, wherein the sector selection control register for controlling the channel element and the built-in switching module of the channel element, and the sector selection for controlling the switching module. The concept of the operation of switching the three sector processing channel element output to n sector outputs by the control register and the switching module.

Referring to FIG. 7, first, the parallelized backward signals input from n sectors are called Rx_Sec1, Rx_Sec2, and Rx_Secn, and the three reverse signal input terminals of the channel element are called Rx_Alpha, Rx_Beta, and Rx_Gamma, respectively. It is assumed that the input terminals of the three reverse signal processing modules included in the Rx1, Rx2, and Rx3 are respectively.

Under this assumption, the mapping from the n input signals {Rx_Sec1, Rx_Sec2, and Rx_Secn} to the output terminals {Rx_Alpha, Rx_Beta, and Rx_Gamma} of the switching module 710 to the switching module 710 causes the switching module 710 to be switched. It is determined by the control value of the sector selection control register 720 for controlling.

The control value of the sector selection control register 720 includes a sector number to connect Rx_Alpha, a sector number to connect Rx_Beta, and a sector number to connect Rx_Gamma among the n input signals to control the operation of the switching module 710.

As shown in the figure, when the control value of the sector selection control register 720 is [4, n, NULL], the switching module 430 connects Rx_Sec4 to Rx_Alpha, Rx_Secn to Rx_Beta, and the sector selection control register 720 Rx_Gamma with control value of NULL is not connected.

The sector selection control register 720 is composed of the same number of registers as the switching module 710, and each register should be able to store at least the number of bits as shown in Equation 2 below.

Number of bits = 3 x log ₂ (n)

Here, n means a minimum integer of 2 or more.

In addition, the connection between the reverse signal input terminals {Rx_Alpha, Rx_Beta and Rx_Gamma} of the channel element 730 and the input terminals {Rx1, Rx2, Rx3} of the reverse signal processing module built in the channel element 730 connects the channel element 730. It is determined by the control value of the sector selection control register 740 for controlling.

The control value of the sector selection control register 740 includes an input terminal number of the channel element 730 to which Rx1 is to be connected, an input terminal number of the channel element 730 to which Rx2 is to be connected, and an input terminal number of the channel element 730 to which Rx3 is to be connected.

For example, as shown in FIG. 7, when the control value of the sector selection control register 740 is [Beta, Alpha, NULL], the channel element 730 connects Rx1 to Rx_Beta and Rx2 to Rx_Alpha.

8A to 8C are explanatory diagrams illustrating operations of the sector selection control register and the switching module of FIG. 6 when the mobile station communicating with a specific channel element performs soft handoff, and FIG. 8A illustrates a soft handoff in one direction. FIG. 8B is a diagram illustrating a soft handoff add, and FIG. 8C is a diagram illustrating a soft handoff drop.

As shown in the figure, when the mobile station moves from the 3 sector area to the n sector area, the channel element receives a reverse signal into 3 sectors, and when n sectors are soft handoff added, from 3 sectors and n sectors. Is simultaneously input, and when 3 sectors are soft drop, only n sectors should be input.

At this time, when the value of the channel element control sector selection control register is converted to [Alpha, NULL, NULL], [Alpha, Beta, NULL] and [NULL, Beta, NULL], the value of the sector selection control register for switching module control is [ 3, NULL, NULL], [3, n, NULL] and [NULL, n, NULL].

Although the technical idea of the present invention has been described in detail according to the above preferred embodiment, it should be noted that the above-described embodiment is for the purpose of description and not of limitation. In addition, those skilled in the art will understand that various embodiments are possible within the scope of the technical idea of the present invention.

As described above, the present invention transmits the forward and reverse signals of the multi-sector through a sector selectively determined among the plurality of sectors, and uses the three-sector processing channel element to transmit the forward and reverse signals of four or more multi-sectors. By processing, it is possible to implement the channel card for the multi-sector base station, and ultimately, there is an excellent effect of enabling the multi-sector base station.

Claims (7)

In the forward and reverse signal processing apparatus of the channel card, The first and second sector selection signals for changing the contents of the signal by the channel card control means and for determining the sector for transmitting the forward signal and the third and fourth sector selection signals for determining the sector for transmitting the reverse signal. Storage means for storing; Under the control of the channel card control means, packet data for transmission through a multi-sector is converted into a forward signal of a transmission format of a code division multiple access method, and then the converted forward signal is converted into a first sector selection signal of the storage means. At least one forward channel processing means for delivering to the sector selected by the apparatus; The channel for changing contents of the first to fourth sector selection signals stored in the storage means, controlling conversion and switching operations of reverse signals, and controlling signal conversion and switching operations of the at least one forward channel processing means. Card control means; At least one forward switching means for switching a forward signal transmitted from said at least one forward channel processing means to a sector selected by a second sector selection signal of said storage means; And At least one forward transmission processing means for digitally synthesizing forward signals switched to a specific sector by the at least one forward switching means, and then converting the digital forward synthesized forward signals into serial signals and transmitting the serial signals Forward signal processing apparatus for a multi-sector processing channel card comprising a. The method of claim 1, At least one serial / parallel conversion means for converting reverse signals received in parallel into a serial signal; At least one reverse switching means for switching a reverse signal transmitted from said at least one serial / parallel conversion means to a sector selected by a third sector selection signal of said storage means; And Under the control of the channel card control means, after converting the reverse signal transmitted through the sector selected by the at least one reverse switching means into packet data, the converted packet data is selected by the fourth sector selection signal. At least one reverse channel processing means for transferring to the sector Forward and reverse signal processing apparatus of the multi-sector processing channel card further comprising. The method according to claim 1 or 2, The storage means, A first storage section for storing the first sector selection signal whose contents are changed by the channel card control means; A second storage section for storing the second sector selection signal whose contents are changed by the channel card control means; A third storage section for storing the third sector selection signal whose contents are changed by the channel card control means; And A fourth storage section for storing the fourth sector selection signal whose contents are changed by the channel card control means; Forward signal processing apparatus of a multi-sector processing channel card comprising a. The method according to claim 1 or 2, Each of the at least one forward switching means, And a sector which is not connected to the at least one forward channel processing unit among the multiple sectors is grounded. The method according to claim 1 or 2, The at least one forward transmission processing means, respectively, At least one digital synthesizing means for digitally synthesizing forward signals switched to a particular sector by the at least one forward switching means; And At least one parallel / serial conversion means for serially converting a parallel forward signal synthesized by a corresponding digital synthesizing means of the at least one digital synthesizing means; Forward signal processing apparatus for a multi-sector processing channel card comprising a. In the reverse signal processing apparatus of the channel card, At least one serial / parallel conversion means for converting reverse signals received in parallel into a serial signal; Storage means for storing first and second sector selection signals for changing the contents of the signal by the channel card control means and for determining a sector for transmitting the reverse signal; At least one reverse switching means for switching a reverse signal transmitted from said at least one serial / parallel conversion means to a sector selected by a first sector selection signal of said storage means; Under the control of the channel card control means, after converting the reverse signal transmitted through the sector selected by the at least one reverse switching means into packet data, the converted packet data is selected by the second sector selection signal. At least one reverse channel processing means for transferring to the sector; And The channel card control means for changing contents of the first and second sector selection signals stored in the storage means and controlling signal conversion and switching operations of the at least one reverse channel processing means; Reverse signal processing apparatus of the multi-sector processing channel card comprising a. The method of claim 6, The storage means, A first storage section for storing the first sector selection signal whose contents are changed by the channel card control means; And A second storage section for storing the second sector selection signal whose contents are changed by the channel card control means; Reverse signal processing apparatus of the multi-sector processing channel card comprising a.

Images