KR100362642B1 - Method and apparatus for providing high-speed pachket data service via supplemental channel in is-95c cdma system - Google Patents

Abstract

The present invention relates to a method and apparatus for a high speed packet data service through an additional channel in an IS-95C CDMA system. According to the present invention, the additional channel data transmission rate of each subscriber is actively adjusted according to the increase or decrease of the number of subscribers. In this case, the IS-95C CDMA system can increase the capacity per base station sector of the 144Kbps packet data service and minimize the voice call capacity reduction due to the total packet data service accommodation per base station sector.

Description

TECHNICAL AND APPARATUS FOR PROVIDING HIGH-SPEED PACHKET DATA SERVICE VIA SUPPLEMENTAL CHANNEL IN IS-95C CDMA SYSTEM}

The present invention relates to a method and apparatus for high-speed packet data service over an additional channel in an IS-95C CDMA system. More specifically, the present invention provides a method and apparatus for controlling a data transmission rate of each subscriber in accordance with the number of active subscribers of 144 Kbps packet data. The present invention relates to a high speed packet data service method and apparatus through an additional channel that enables high speed packet data service of various subscribers.

1 is a schematic diagram of a digital mobile communication system constructed in accordance with existing IS-95 standards. In operation, telephone calls and other communications are made by data exchange between mobile stations 10 and base stations 12 using RF signals. Furthermore, communication is carried out from the base station 12 to the public data network PDSN 18 or other terminal 10 via a base station control station (BSC) 14 and an exchange MSC: 16. The base station control station 14 and the switch 16 are responsible for mobility control, call processing, and call routing functionality.

In the IS-95 standard system, the RF signal exchanged between the mobile terminal 10 and the base stations 12 is processed according to a code division multiplexing signal processing technique. The forward link signal is a signal transmitted from the base station 12 to the mobile terminal 10, while the reverse link signal is a signal transmitted from the mobile terminal 10 to the base station 12. A forward link call channel is used to transfer subscriber data from base station 12 to a particular mobile terminal 10. In operation, base station 12 creates a number of forward link call channels, each of which is used for communication with a particular subscriber's mobile terminal 10. Base station 12 also creates various control channels, such as pilot channels, sink channels, and paging channels. The forward link call channel is the sum of the call channel and the control channel.

IS-95C is a method that implements high-speed data communication by resolving a large part of IS-95A's Common Air Interface (CAI) standard whose main purpose is voice communication. In the IS-95C network, the forward link is defined to include the channel structures of the existing IS-95A and IS-95B. One communication channel includes one fundamental channel and up to seven supplemental channels for channel configurable channels 1 and 2 (hereinafter referred to as "SCH") and two for CC 3 to 4 It consists of additional channels up to and one power control subchannel. The communication channel configured as described above can support voice calls of the IS-95A, low speed data services of the IS-95B, medium speed data services of the IS-95B, and high speed packet data services of the IS-95C.

For example, in an IS-95 CDMA communication system, data transmission to a remote mobile terminal is allocated to the mobile terminal by using the additional channel, which is a high-speed data channel, and transmitted using the additional channel. In more detail, when data transmission is required, the mobile station is immediately assigned a basic channel, which is a common communication channel, and depends on the basic channel until the additional channel becomes available. Once the additional channel is available, data is transmitted over the additional channel, and when the data transmission is completed, the additional channel is disconnected and the mobile terminal continues to talk through the basic channel.

However, in case of using additional channel of wireless network in conventional IS-95C CDMA system, maximum data rate of 144Kbps can be maintained. When two or more subscribers request a 144Kbps packet data service in a sector of a base station, simultaneous reception of two or more subscribers is impossible because of radio interference and a finite number of resources of the CSM chip.

Accordingly, as a data transmission method and apparatus that can use an additional channel more efficiently than the conventional method, a high-speed packet through an additional channel in an IS-95C CDMA system capable of processing multiple subscribers at the same time even though a 144Kbps data transmission rate is reduced. There is an urgent need for the development of data service methods and devices.

Summary of the Invention An object of the present invention is to overcome the above-mentioned problems of the prior art, and to provide a high speed packet data service to multiple subscribers simultaneously by variably adjusting the data transmission rate of each subscriber according to the number of active subscribers of a full data rate service. It is to provide a high-speed packet data service method and apparatus over an additional channel in an IS-95C CDMA system that can provide.

Another object of the present invention is to provide a method and apparatus for high-speed packet data service through an additional channel in an IS-95C CDMA system capable of minimizing a decrease in voice call capacity according to an entire packet data service per base station sector.

That is, one aspect of the present invention for achieving the above object is

Determining the number of full data rate services per base station sector;

A base station additional channel data rate table for dynamically allocating additional channel data rate to each subscriber according to the total number of data rate services per base station sector determined in the previous step;

Dynamically changing a data transmission rate of each subscriber by referring to the base station additional channel data rate table according to the number of activated high-speed packet data service subscribers;

Transmitting, by the base station channel card, the data transmission rate of the subscriber determined at the base station to the control station; And

The control station transmits data to the mobile terminal at the determined data rate, and transmits the data at the corresponding rate. The high speed packet data service method through an additional channel in an IS-95C CDMA system.

Another aspect of the present invention for achieving the above object is

A base station for determining the total number of data rate services per sector capable of maintaining the full rate;

A base station additional channel data rate table for determining the data rate of each subscriber according to the total number of data rate services per sector determined by the base station;

A base station control processor (hereinafter referred to as "BCP") for dynamically allocating a data rate to active high-speed packet service users by referring to a base station additional channel data rate table;

A base station channel card (BTS Channel Card Equipment; hereinafter referred to as "BCCE") for transmitting the additional channel data transmission rate of each subscriber determined by the base station to the control station;

IS-95C CDMA system comprising a base station data service selector packet call processor (hereinafter referred to as "CSPP") to deliver the determined data rate to the mobile terminal and to transmit data at that rate A device for providing high speed packet data service through an additional channel in.

1 is a schematic diagram of a digital mobile communication system constructed in accordance with the existing IS-95 standard;

2 is a flowchart of a method for fast packet data service through an additional channel in an IS-95C CDMA system of the present invention;

3 is a data flow diagram of an embodiment of a high-speed packet data service method on an additional channel in an IS-95C CDMA system of the present invention;

4 is a schematic diagram of a fast packet data service apparatus on an additional channel in an IS-95C CDMA system according to the present invention.

* Description of the symbols for the main parts of the drawings *

10: mobile station (MS) 100: base station

120: base station channel card 140: base station control station (BSC)

160: public data network (PDSN) 180: exchange (MSC)

200: base station additional channel data rate table

141: base station channel card (BCCE)

142: Control station data service selector call packet processor (CSPP)

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

The present invention determines the number of subscribers of the entire packet data service of 144 Kbps per base station sector, and adjusts the data transmission rate of each subscriber according to the increase or decrease of the number of high-speed packet data service subscribers based on this value, thereby simultaneously providing a plurality of subscribers with the high-speed packet data service. It is characterized by making it available. Although the present invention is basically a technology applied to 3G 1 × RTT, it is not necessarily limited to such an application example, and to accommodate multiple subscribers even if the data transmission rate is reduced to efficiently use limited air resources. It can be used as a plan.

One aspect of the present invention is a high speed packet data service method on an additional channel in an IS-95C CDMA system. In the case of performing the high-speed packet data service by the above method, first, the total number of full data rate services per base station sector is determined (S1). In the present invention, the total number of 144 Kbps data rate service per base station sector may be limited by the base station, specifically, the operator of the base station is determined manually according to the air (Air) situation. As a method of setting the total number of 144 Kbps data rate services per sector, a method of inputting a base station using a BSM (operation server) and an input method using a command on a base station monitor may be used.

Next, a base station additional channel data rate table for dynamically allocating additional channel data rate to each subscriber is prepared according to the total number of data rate services per base station sector determined in the previous step (S1) (S2).

The base station additional channel data rate table is a sum of data rates of all subscribers using high-speed packet data services according to the total number of data rate services per base station sector. Four types of data rates (19.2 Kbps, 38.4 Kbps, 76.8 Kbps, 153.6 Kbps) should be assigned to each subscriber.

Data rates presented by the IS-2000 standard are shown in Table 1 below.

Data transfer rate meaning One 19.2 Kbps 2 38.4 Kbps 3 76.8 Kbps 4 153.6 Kbps

For example, when the total number of data rate services per base station sector determined in the first step S1 is 1 user, the base station additional channel data rate table is prepared to accommodate 8 subscribers as shown in Table 2 below. Can be. Table 2 in the following formula means the data rate of the IS-2000 standard of Table 1, the arrangement of the data rate of the item in Table 2 can be changed. For example, Table 2 below assigns 3 (76.8 Kbps), 2 (38.4 Kbps), and 2 (38.4 Kbps) when the number of active high-speed packet users is three, and this data rate is 2 (38.4). Kbps), 2 (38.4 Kbps) and 3 (76.8 Kbps) or 2 (38.4 Kbps), 3 (76.8 Kbps) and 2 (38.4 Kbps).

Subscriber index number Subscribers 0 One 2 3 4 5 6 7 8 9 10 11 12 13 One 4 2 3 3 3 3 2 2 4 2 2 2 2 5 2 2 2 One One 6 2 2 One One One One 7 2 One One One One One One 8 One One One One One One One One

The base station additional channel data rate table is prepared to accommodate 14 subscribers as shown in Table 3 when the total number of 144 Kbps data rate services per base station sector determined in the first step is 2 subscribers. The arrangement of the data rate values in Table 3 below can be changed. When the total number of 144 Kbps data rate services per base station sector is 2, theoretically possible subscriber IDs are possible up to 16 subscribers, but up to 14 subscribers because pilot channels and paging channels are excluded.

Subscriber index number Subscribers 0 One 2 3 4 5 6 7 8 9 10 11 12 13 One 4 2 4 4 3 4 3 3 4 3 3 2 2 5 3 3 2 2 2 6 3 3 2 2 2 2 7 3 2 2 2 2 2 2 8 2 2 2 2 2 2 2 2 9 2 2 2 2 2 2 2 One One 10 2 2 2 2 2 2 One One One One 11 2 2 2 2 2 One One One One One One 12 2 2 2 One One One One One One One One One 13 2 2 One One One One One One One One One One One 14 2 2 One One One One One One One One One One One One

Similarly, when the total number of data rate service of 144 Kbps per base station sector is set to 3 subscribers or 4 subscribers, the dynamic data rate additional channel table may be determined for each case.

In the third step S3, the data transmission rate of each subscriber is dynamically changed by referring to the base station additional channel data rate table according to the number of activated high-speed packet data service subscribers.

In the process of dynamically changing the data transmission rate of each subscriber according to the number of active high-speed packet data service subscribers, if a new subscriber requests a full data rate service, the current subscriber (s) and the new subscriber Adjust the data rate of each subscriber so that the sum of the data rates is equal to the total data rate of the IS-2000 standard. On the other hand, when one of the plurality of subscribers using the high speed packet data service requests the release of the high speed packet data service, the subscriber station releases the additional channel resources of the subscriber and the transmission rate of the remaining subscribers except for the subscriber that has requested the release. Reschedule each subscriber's data rate so that the sum is at full data rate.

For example, a method of dynamically allocating a data rate of each user according to the number of active high-speed packet data service users is limited to one subscriber, for example, by limiting the total number of data rate services per sector capable of maintaining a total speed of 144 Kbps to one subscriber. Explain.

First, when subscriber A requests 144 Kbps data service, the base station assigns data rate 4 (153.6 Kbps) to subscriber A. Subsequently, when subscriber B requests 144 Kbps data service, the base station changes the data rate of subscriber A from 4 (153.6 Kbps) to 3 (76.8 Kbps) according to the base station additional channel data rate table (see Table 2 above). Then, subscriber B is assigned a data rate of 3 (76.8 Kbps). When the additional channel is allocated in this way, the subscribers A and B both transmit data at a data rate of 3, that is, 76.8 Kbps. In this state, when the subscriber A requests the release of the 144 Kbps data service, the base station releases the subscriber channel's additional channel resources and changes the subscriber B's data rate from 3 (76.8 Kbps) to 4 (153.6 Kbps).

Next, the case of limiting the total number of data rate services per sector that can maintain the full speed of 144 Kbps to 2 subscribers will be described as an example. If subscriber A requests 144 Kbps data service, the base station assigns data rate 4 (153.6 Kbps) to subscriber A. If subscriber B requests 144 Kbps data service, the base station assigns data rate 4 (153.6 Kbps) to subscriber B. If both subscribers A and B are using a high speed packet data service at a data rate of 4 (153.6 Kbps), and the subscriber C requests an additional 144 Kbps high speed packet data service, the base station may request a data rate table (see Table 3 above). The subscriber B's data rate is changed from 4 (153.6 Kbps) to 3 (76.8 Kbps) (see Table 3 above). The base station then assigns subscriber C a data rate of 3 (76.8 Kbps). In this case, subscriber A transmits data at data rate 4 and subscribers B and C transmit data at data rate 3, respectively. In this state, if the subscriber A requests the release of the 144 Kbps data service, the base station releases the subscriber channel's additional channel resources, and changes the subscriber B's data transmission rate from 3 (76.8 Kbps) to 4 (153.6 Kbps). Change the data rate of C from 3 (76.8 Kbps) to 4 (153.6 Kbps).

In order to determine the data transmission rate of each subscriber using the dynamic data rate SCH table, a subscriber index must be assigned to each subscriber and then managed. For example, a case where subscribers A, B, C, and D have values of 0, 1, 2, and 3 as subscriber indices will be described as an example.

First, when subscriber A releases additional channel resources

(1) Subscriber index 0 owned by subscriber A is returned.

(2) Subscribers B, C, and D are adjusted to subscriber indexes 0, 1, and 2, respectively.

(3) Subscribers B, C, and D have data rates matching three subscribers and their respective subscriber indices.

Second, when subscriber B releases additional channel resources

(1) Subscriber index 1 owned by subscriber B is returned.

(2) the subscriber index of subscriber A does not change to 0,

(3) Subscribers C and D are adjusted to subscriber indexes 1 and 2, respectively.

(4) Subscribers A, C, and D have data rates matching three subscribers and their respective subscriber indices.

Third, when subscriber D releases additional channel resource

(1) Subscriber index 3 owned by subscriber D is returned.

(2) The subscriber indexes of subscribers A, B, and C do not change to 0, 1, 2.

(3) Subscribers A, B, and C have data rates matching three subscribers and their respective subscriber indices.

Fourth, when subscriber E requests additional channel resources.

(1) Subscriber E is given a subscriber index 4 that is larger than the subscriber indexes of subscribers A, B, C, and D.

(2) Subscribers A, B, C, D, and E will have data rates matching five subscribers and their respective subscriber indices.

In the fourth step S4, the base station channel card transmits the data transmission rate of the subscriber determined at the base station to the control station, and then in the fifth step, the control station transmits data to the mobile terminal at the determined data transmission rate, and the corresponding transmission rate. Send data to

The handoff method according to the high-speed packet data service method through an additional channel in the IS-95C CDMA system of the present invention is as follows.

The control station requires additional channel allocation to only one of the one or more active PNs (the resources of the base station with the best pilot strength) of the one or more active PNs. Subchannel changes due to handoff always occur only after completion of the base channel handoff. That is, when the subscriber moves from one base station to another base station during handoff of the base channel, the base channel can maintain two or more Adds, but in the case of the additional channel, the additional channel resources of the base station moving away from this process And release the additional channel resources for the base station closer to. That is, in case of additional channel

At one point, one state of Add is maintained.

3 is a data flow diagram of an embodiment of a high-speed packet data service method on an additional channel in an IS-95C CDMA system of the present invention. Referring to Figure 3 will be described in more detail the dynamic allocation procedure of the data transmission rate of a high-speed packet data service subscriber according to an embodiment of the present invention.

Referring to FIG. 3, with the total number of 144 Kbps data rate services per sector set to 1 subscriber, mobile station 1 (MS1) of subscriber A is receiving service at data rate 4 and subscriber B (MS2) is the default. Suppose that the mobile station 2 (MS2) of the subscriber B requests the full data rate service of 144 Kbps per sector while transmitting data at the data rate of the channel (9.6 Kbps). First, the procedure of changing the data transmission rate of the mobile station 1 from 4 to 3 shows that the BSC HDSB Packet Call Processor (CSPP) of the control station sends an additional channel allocation request message for the mobile station 2 to the BCTS (BTS Channel Card Equipment). The BCCE transmits an additional channel allocation request message of the mobile station 2 to the BTS (BTS Control Processor) of the base station. Upon receiving this message, the BCP notifies the BCCE of a data rate change notification message informing the mobile station 1 (MS1) of a change in the additional channel data rate of the mobile station 1 (MS1), and the BCCE sends an additional channel data rate change request message. do. The CSPP receives this message and sends a response message to the BCCE in response to the additional channel data rate change message of the mobile station 1. Upon receiving this message, the BCCE changes the additional channel data rate of MS1 from 4 to 3 and transmits an acknowledgment message to CSPP. The CSPP sends an additional channel assignment message to the mobile station 1 (MS1), and the mobile station 1 sends an acknowledgment message to the control station's CSPP. In this case, mobile station 1 (MS1) transmits data at an additional channel data rate 3 (76.8 Kbps).

After changing the data transmission rate of the mobile station 1 MS1 as described above, the additional channel data transmission rate 3 is allocated to the mobile station 2 MS2. Specifically, the BCP sends the additional channel assignment message of the mobile station 2 to the BCCE, and the BCCE sends the additional channel response message to the CSPP. The CSSP receives this message and sends an additional channel assignment message to the mobile station 2, which sends an acknowledgment message to the CSPP of the control station. In this case, the mobile station 2 can transmit data at the data transmission rate 3.

As described above, when the mobile terminal 1 communicates at the data transmission rate 4, the mobile terminal 2 enters, and the data transmission rate of the mobile terminal 1 is changed from 4 to 3, and the mobile terminal 3 is assigned a data transmission rate 3 to the high speed packet. In the situation where the data service is provided, when the mobile station 1 of the subscriber A requests the additional channel resource release, the CSPP of the control station sends the additional channel resource release request message of the mobile station 1 to the BCCE, and the BCCE requests the additional channel release. Send a message to the BCP while sending an acknowledgment message to CSPP. The CSPP of the control station sends the additional channel assignment message to the mobile station 1, and the mobile station 1 sends an acknowledgment message for the mobile station 1 to release the additional channel resources for the mobile station 1. When the additional channel resource is released, the mobile station 1 transmits data at the basic channel data rate (9.6 Kbps).

When the additional channel resource of the mobile station 1 is released in this manner, the additional channel data transmission rate of the mobile station 2 is adjusted to 4. That is, the BCP of the base station sends the additional channel data rate change notification message of the mobile station 2 to the BCCE of the control station, and the BCCE sends the additional channel data rate change request message to the CSPP. The CSPP receives this message and sends an additional channel data rate change response message to the BCCE, which in turn sends an acknowledgment message to the CSPP. After receiving the acknowledgment message from the BCCE, the CSPP sends an additional channel assignment message to the mobile station 2 (MS2), and the mobile station 2 sends an acknowledgment message to the CSPP about it. In this case, the mobile station 2 transmits data at a data rate 4 (153.6 Kbps).

4 is a schematic diagram of a fast packet data service apparatus on an additional channel in an IS-95C CDMA system according to the present invention. 4, a fast packet data service apparatus through an additional channel in an IS-95C CDMA system of the present invention includes a base station 100; A base station control processor (BCP) 120; A base station additional channel data rate table 200; A base station channel card equipment (BCCE) 141 and a base station data service selector packet call processor (CSPP: BTS HDSB Packet call Processor) (142).

In the apparatus of the present invention, the base station 100 determines the total number of data rate services per sector capable of maintaining a full data rate according to the IS-2000 standard, and the base station additional channel data rate table 200 is a base station. According to the total number of data rate services per sector determined by 100, the data rate of each subscriber is determined. The base station control processor (BCP) 120 dynamically allocates a data transmission rate to active high speed packet service users by referring to the base station additional channel data transmission rate table 200. The base station channel card 141 is responsible for transferring the additional channel data transmission rate of each subscriber determined by the base station 100 to the base station data service selector packet call processor 142, and the base station data service selector packet call processor 142. Transmits the determined data transmission rate to the mobile terminal 110 and transmits data at the corresponding rate.

In the apparatus of the present invention, the base station additional channel data rate table 200 is a total data rate of the IS-2000 standard when the data rate of the total number of subscribers is summed according to the determined total number of data rate services per base station sector. Four types of data rates (19.2 Kbps, 38.4 Kbps, 76.8 Kbps, 153.6 Kbps) are allocated to each subscriber so that the data rate can be obtained. For example, the table shows that if the total number of data rate services per base station sector is set to 1 user (see Table 2 above), one subscriber (user index 0) has a high data rate data rate of 4 (153.6 Kbps). If the second subscriber (user index 1) requests the high-speed packet data service while using, the data transmission speed of the user index 0 user is changed to 3 (76.8 Kbps) and the data transmission speed is sent to the user index user 1 Allocate 3 (76.8 Kbps). Subsequently, when a new subscriber of user index 2 requests high-speed packet data service, the data transmission rate of user index 0 user is maintained at 3, and the data transmission rate of user index 1 user is 3 (76.8 Kbps) to 2 (38.4 Kbps). ) And assign a data rate of 2 (38.4 Kbps) to the user with user index 2. Furthermore, when the fourth user requests a high-speed packet data service and becomes a total of four users, the data rate 2 (38.4 Kbps) is allocated so that the sum of all the data rates is the total data rate. To this end, the data transmission rate of the first user is changed to 2, the data transmission rates of the second and third users are kept at 2, and the data transmission rate 2 (38.4 Kbps) is allocated to the fourth user. If there are 5 users, you can assign data rates of 2 (38.4 Kbps), 2 (38.4 Kbps), 2 (38.4 Kbps), 1 (19.2 Kbps), and 1 (19.2 Kbps). 2 (38.4 Kbps), 2 (38.4 Kbps), 1 (19.2 Kbps), 1 (19.2 Kbps), 1 (19.2 Kbps), 1 (19.2 Kbps) can be assigned. On the other hand, for example, three active high-speed packet data service users require 3 (76.8 Kbps), 2 (38.4 Kbps), and 2 (38.4 Kbps) respectively. In this case, 2 (38.4 Kbps), 1 (19.2 Kbps), 1 (19.2 Kbps), 1 (19.2 Kbps), 1 (19.2 Kbps), 1 (19.2 Kbps), and 1 (19.2 Kbps) The first user's data rate is changed from 3 to 2, the second and third user's data rate is changed from 2 to 1, and the remaining four users are assigned a data rate of 1 (38.4 Kbps), respectively. .

The base station additional channel data rate table 200 is prepared to accommodate eight subscribers when the total number of data rate services per base station sector is one subscriber, and 14 subscribers when the total number of data rate services per base station sector is two subscribers. It is written to accommodate subscribers. The base station additional channel data rate table may be configured as shown in Table 2 or Table 3.

When one of a plurality of subscribers requests release of data service, the device of the present invention releases the additional channel resources of the subscriber, and the sum of the transmission rates of the remaining subscribers except for the subscriber who requested the release is full. readjust the data transmission rate of each subscriber to achieve the data rate.

According to the present invention, by adjusting the data transmission rate of each subscriber according to the increase or decrease of the number of high-speed packet data service subscribers, the capacity of the base station sector of the 144 Kbps packet data service in the IS-95C CDMA system can be increased.

In addition, it is possible to minimize the decrease in voice call capacity caused by accommodating 144 Kbps packet data service per base station sector. That is, since the air resources for voice calls and data services are shared, the air resources for voice calls are limited as much as the number of 144 Kbps total packet data service subscribers is not limited. Reducing the data rate can minimize the reduction in voice call capacity and reduce the air quality interference of voice call subscribers.

Claims (13)

Determining the number of full data rate services per base station sector; A base station additional channel data rate table for dynamically allocating additional channel data rate to each subscriber according to the total number of data rate services per base station sector determined in the previous step; Dynamically changing a data transmission rate of each subscriber by referring to the base station additional channel data rate table according to the number of activated high-speed packet data service subscribers; Transmitting, by the base station channel card, the data transmission rate of the subscriber determined at the base station to the control station; And And transmitting, by the control station, the data to the mobile terminal at the determined data rate, and transmitting the data at the corresponding rate, the high speed packet data service method through the additional channel in the IS-95C CDMA system. The IS-95C CDMA system according to claim 1, wherein the determination of the total number of data rate services per base station sector is inputted to a base station using a BSM (operation server) or input using a command on a base station monitor. High speed packet data service through an additional channel in. The method according to claim 1, wherein the base station additional channel data rate table preparation step adds all data rates of all subscribers using high-speed packet data services according to the total number of data rate services per base station sector. The additional channel in the IS-95C CDMA system is designed to allocate four data rates (19.2 Kbps, 38.4 Kbps, 76.8 Kbps, 153.6 Kbps) to each subscriber so that the data rate (153.6 Kbps) comes out. High speed packet data service method. 4. The additional channel in the IS-95C CDMA system according to claim 3, wherein the base station additional channel data rate table is designed to accommodate eight subscribers when the total number of data rate services per base station sector is one subscriber. High speed packet data service method. 4. The IS-95C CDMA system of claim 3, wherein the base station additional channel data rate table is designed to accommodate 14 subscribers when the total number of 144 Kbps data rate services per base station sector is 2 subscribers. High speed packet data service method over channel. The method of claim 1, wherein the step of dynamically changing the data transmission rate of each subscriber according to the number of activated high-speed packet data service subscribers is performed when the new subscriber requests the full-rate data service. A method of high speed packet data service through an additional channel in an IS-95C CDMA system, characterized in that the data transmission rate of each subscriber is adjusted so that the sum of the data transmission rates is the total data transmission rate of the IS-2000 standard. The method of claim 1, wherein when one of the plurality of subscribers requests the release of data service, the additional channel resources of the subscriber are released and the sum of the transmission rates of the remaining subscribers except for the subscriber who requests the release is added. And re-adjusting the data transmission rate of each subscriber so that the full speed is achieved. The high-speed packet data service method through the additional channel in the IS-95C CDMA system. 2. The method of claim 1, wherein after the method completes the handoff of the base channel at handoff, the control station requests additional channel allocation to only one of the at least one active PNs with the best active PN. High speed packet data service method through an additional channel in the IS-95C CDMA system, characterized in that it further comprises the step of changing. A base station for determining the total number of data rate services per sector capable of maintaining the full rate; A base station additional channel data rate table for determining the data rate of each subscriber according to the total number of data rate services per sector determined by the base station; A base station control processor (BCP) for dynamically allocating a data rate to active high-speed packet service users by referring to a base station additional channel data rate table; A base station channel card (BCCE) for transmitting the additional channel data transmission rate of each subscriber determined by the base station to the control station; An additional channel in an IS-95C CDMA system comprising a base station data service selector packet call processor (CSPP) for delivering a determined data rate to a mobile terminal and transmitting data at that rate. High speed packet data service providing apparatus. 10. The method of claim 9, wherein the base station additional channel data rate table sums the data rate of the total number of subscribers according to the total number of data rate services per base station sector. An apparatus for providing a high speed packet data service through an additional channel in an IS-95C CDMA system, characterized in that the data transmission rate is allocated to each subscriber. The additional channel in the IS-95C CDMA system according to claim 9, wherein the base station additional channel data rate table is designed to accommodate eight subscribers when the total number of data rate services per base station sector is one subscriber. High speed packet data service providing apparatus. 10. The additional channel in the IS-95C CDMA system according to claim 9, wherein the base station additional channel data rate table is designed to accommodate 14 subscribers when the total number of data rate services per base station sector is 2 subscribers. High speed packet data service providing apparatus. 10. The method of claim 9, wherein, when one of the plurality of subscribers requests the release of data service, the device releases the additional channel resources of the subscriber, and the sum of the transmission rates of the remaining subscribers except for the subscriber who requested the release is added. An apparatus for providing a high-speed packet data service through an additional channel in an IS-95C CDMA system, wherein the data transmission rate of each subscriber is readjusted so as to be full speed.