KR101221150B1 - Method and apparatus for transmitting and receiving paging information in orthogonal frequency division multiple access system - Google Patents

Abstract

According to the present invention, in a communication system using an orthogonal frequency division multiple access (OFDMA), a base station indicates a first frame indicating a packet data information transmission frame in each of a plurality of shared control channel (SCCH) frames. Inserting one of an indication bit and a second indication bit indicating a paging information transmission frame, inserting packet data transmission information into an SCCH frame into which the first indication bit is inserted, and paging into an SCCH frame into which the second indication bit is inserted Inserts information, transmits the SCCH frame into which the packet data transmission information is inserted and the SCCH frame into which the paging information is inserted, and the paging information includes identification information of a terminal to receive a paging message. do.

Paging Transport, Common Control Channel

Description

METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING PAGING INFORMATION IN ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS SYSTEM}

1 is a block diagram of a transmission apparatus of an OFDMA system according to the prior art

2 is a view showing the structure of the SCCH according to the prior art

3 is a view showing the structure of the SCCH according to the prior art

4 is a view showing the structure of the SCCH according to the prior art

5 is a diagram illustrating a schematic operation procedure of a terminal according to an embodiment of the present invention.

6 illustrates a frame structure of an SCCH for implementing a first embodiment of the present invention.

7 is a diagram illustrating a procedure for an SCCH transmission method of a base station according to the first embodiment of the present invention.

8 is a diagram illustrating a procedure for a method of receiving an SCCH of a terminal in an idle state according to a first embodiment of the present invention

9 is a diagram illustrating a procedure for a method of receiving an SCCH of a terminal in an active state according to a first embodiment of the present invention

10 is a block diagram of an apparatus for transmitting an SCCH of a base station according to the first embodiment of the present invention.

11 is a block diagram of an SCCH receiver of an idle terminal according to a first embodiment of the present invention

12 is a block diagram of an SCCH receiver of an active terminal according to the first embodiment of the present invention

13 illustrates a frame structure of an SCCH for implementing a second embodiment of the present invention.

14 is a diagram illustrating a procedure for a method of receiving an SCCH of a terminal in an idle state according to a second embodiment of the present invention;

15 is a diagram illustrating a procedure for a method of receiving an SCCH of a terminal in an active state according to a second embodiment of the present invention;

16 is a block diagram of an apparatus for transmitting an SCCH of a base station according to the second embodiment of the present invention.

17 is a block diagram of an SCCH receiver of an idle terminal according to a second embodiment of the present invention

18 is a configuration diagram of an SCCH receiver of an active terminal according to a second embodiment of the present invention;

19 illustrates a frame structure of an SCCH for implementing a third embodiment of the present invention.

20 is a diagram illustrating a procedure for a method of receiving an SCCH of a terminal in an idle state according to a third embodiment of the present invention

21 is a block diagram of an SCCH transmission apparatus of a base station according to the third embodiment of the present invention

22 is a block diagram of an SCCH receiver of an idle terminal according to a third embodiment of the present invention

23 illustrates a frame structure of an SCCH for implementing a fourth embodiment of the present invention.

24 is a diagram illustrating a procedure for an SCCH transmission method of a base station according to the fourth embodiment of the present invention.

25 is a diagram illustrating a procedure for a method of receiving an SCCH of a terminal in an idle state according to a fourth embodiment of the present invention

26 is a block diagram of an apparatus for transmitting an SCCH of a base station according to the fourth embodiment of the present invention.

27 is a block diagram of a SCCH receiving apparatus of an idle state terminal according to a fourth embodiment of the present invention;

The present invention relates to a method and apparatus for efficiently transmitting and receiving paging information in a communication system using an orthogonal frequency division multiple access scheme.

Recently, orthogonal frequency division multiplexing (hereinafter referred to as " OFDM ") has been actively studied as a method useful for high-speed data transmission in a wireless channel. The OFDM method is a method of transmitting data using a multi-carrier, and a plurality of sub-carriers having mutual orthogonality to each other by converting symbol strings serially input in parallel. In other words, it is a type of multi-carrier modulation (hereinafter referred to as "MCM") that modulates and transmits a plurality of sub-carrier channels.

1 is a diagram illustrating the structure of a transmitter in a general OFDM system.

Referring to FIG. 1, a transmitter of an OFDM system includes an encoder 101, a modulator 102, a serial / parallel converter 103, an inverse fast fourier transform (hereinafter referred to as “IFFT”) block 104. A bottle / serial converter 105 and a Cyclic Prefix (CP) inserter 106.

The encoder 101 is called a channel encoding block, and receives a predetermined information bit string as an input and performs channel encoding. In general, the encoder 101 may be a convolutional encoder, a turbo encoder, a low density parity check (LDPC) encoder, a ZIG-ZAG encoder, or the like.

The modulator 102 performs modulation such as Quadrature Phase Shift Keying (QPSK), 8PSK, 16-ary Quadrature Amplitude Modulation (16QAM), 64QAM, 256QAM, and the like. Meanwhile, although omitted in FIG. 1, it is obvious that a rate matching block for performing repetition and puncturing may be additionally included between the encoder 101 and the modulator 102. to be.

The serial / parallel converter 103 receives an output of the modulator 102 and converts it into parallel data. The IFFT block 104 receives output data of the serial / parallel converter 103 as an input and performs an IFFT operation. The output data of the IFFT block 104 is converted into serial data by the parallel / serial converter 105. The CP inserter 106 inserts the cyclic prefix code CP into the output data of the bottle / serial converter 105.

A method of distinguishing multiple users through the OFDM scheme as described above is called an orthogonal frequency division multiple access scheme (hereinafter, referred to as "OFDMA").

Next, a method of transmitting packet data in an OFDMA system will be described. In an OFDMA system that mainly considers packet data transmission, when time-frequency resources are exclusively allocated to a specific terminal, resources that do not use the allocated resources are wasted, thereby reducing the efficiency of resource usage. In order to prevent this, a method of scheduling a base station in consideration of channel environment and fairness among terminals having data to be transmitted at every transmission time is used. For this purpose, a channel through which packet data is transmitted is set to public, which is called a shared data channel (hereinafter referred to as a "SDCH"). Control information on which time-frequency resource is used to transmit the SDCH, to which UE, or to which demodulation / code rate selection (hereinafter referred to as "MCS") is used as a control channel Notify the terminals by transmitting. The control channel for transmitting such control information is referred to as a shared control channel (hereinafter referred to as "SCCH"). SCCH uses time frequency resources allocated in advance among all OFDMA time frequency resources. The UE can know whether the SDCH is allocated to the corresponding UE and information necessary for demodulation through the SCCH, so that data can be received.

Meanwhile, when a network attempts a voice call or a packet call first, paging is performed to a terminal that is not connected to the network and is in an idle state (hereinafter, referred to as an "idle state"). It will send a paging message. The network transmits a paging message in the cells where the terminal can be located and the terminal receives the paging message if the same ID is included in the paging message. (active) "to start the normal service. In the case of the terminal in the idle state, the paging message may be transmitted to a plurality of cells because the location of the terminal is not managed for each cell but is managed at a higher level.

Meanwhile, the terminal supports a discontinuous reception function (hereinafter, referred to as "DRx") in order to have a long standby time while minimizing power consumption in an idle state, which transmits paging every TTI (Transmission Time Interval). It is a method of checking whether or not paging is transmitted by waking only to the TTI corresponding to this period using a DRx period rather than checking. The time point at which the terminal wakes up is referred to as a paging reception time, and the terminal operates in a sleep mode for keeping the power of the receiving apparatus off for a time other than the paging reception time.

In addition, in order to minimize power consumption, a structure for allocating a paging indication channel (PICH) in the 3GPP and receiving a channel for a paging message after waking up only when there is a paging indication after the UE first receives it is presented. The channel for the paging message has a long TTI duration and can only be decoded to decode the information. Therefore, when the paging message is decoded at every paging reception time, power consumption is high, and thus the PICH is introduced.

Currently, the system supporting OFDMA proposes a short TTI interval of about 0.5 ms unlike the existing system, and it is expected that a PICH type channel such as a 3GPP system is not required. In addition, when an Orthogonal Variable Spreading Factor (OVSF) code is allocated to a common control channel and transmitted only when there is data, such as a CDMA system, it is difficult to efficiently use resources. Therefore, paging transmission is a common packet in an OFDMA system. Consider a method of transmitting through the SDCH used for transmission.

The technical problem to be achieved by the present invention is to provide a method for transmitting the terminal ID including the common control channel.

To this end, the present invention proposes a common control channel structure for distinguishing a common channel for general packet data transmission and a common channel for paging transmission, and allowing a terminal to distinguish and receive it.

In a method of transmitting paging information of a base station in a communication system using an orthogonal frequency division multiple access (OFDMA), a packet data information transmission frame is provided in each of a plurality of shared control channel (SCCH) frames Inserting one of a first indication bit indicating a first indication bit and a second indication bit indicating a paging information transmission frame, inserting packet data transmission information into an SCCH frame into which the first indication bit is inserted, and the second indication bit Inserting paging information into the inserted SCCH frame, and transmitting the SCCH frame into which the packet data transmission information is inserted and the SCCH frame into which the paging information is inserted, to the terminals, wherein the paging information includes a paging message. Characterized by the identification information of the terminal to be received.
A method of receiving paging information of a terminal in a communication system using an orthogonal frequency division multiple access (OFDMA), when the current operation mode is a sleep mode, awake at a predetermined time point ) Mode to receive a first shared control channel (SCCH) frame from the base station and whether the indication bit included in the first SCCH frame is a first indication bit indicating a paging information transmission frame. Determining, if the indication bit included in the first SCCH frame is the first indication bit, detecting paging information from the first SCCH frame, and identifying information of the terminal included in the paging information. Determining whether the identification information is identical to the identification information, and receiving a paging message from the base station according to the determination result. Include.
In a method of transmitting paging information of a base station in a communication system using an orthogonal frequency division multiple access (OFDMA), a plurality of shared control channel (SCCH) frames and a plurality of first SCCH frames Dividing pSC information into at least one SCCH frame among the plurality of second SCCH frames, and indicating that the at least one SCCH frame is a paging information transmission frame in the first SCCH frame; Inserting an indication bit, and transmitting a first SCCH frame into which the indication bit is inserted and at least one SCCH frame into which the paging information is inserted, to the terminals, wherein the paging information receives a paging message. Characterized by the identification information of the terminal to be characterized.
A method of receiving paging information of a terminal in a communication system using an orthogonal frequency division multiple access (OFDMA), when the current operation mode is a sleep mode, awake at a predetermined time point A first control channel (SCCH) frame received from the base station by transitioning to the < RTI ID = 0.0 >) mode, < / RTI > and a first bit indicating that the second SCCH frame is a paging information transmission frame with an indication bit included in the first SCCH frame. Determining whether the indication bit is an indication bit; if the indication bit included in the first SCCH frame is the first indication bit; receiving the second SCCH frame; and detecting paging information from the second SCCH frame. And, it is determined whether the identification information of the terminal included in the paging information is the same as its own identification information and the image according to the determination result. It comprises the steps of: receiving a paging message from the base station.
In a method of transmitting paging information of a base station in a communication system using an Orthogonal Frequency Division Multiple Access (OFDMA), a plurality of shared control channels (SCCHs) are allocated to transmit paging information. Inserting paging information into at least one SCCH frame, and transmitting at least one SCCH frame into which the paging information is inserted, to the terminals, wherein the paging information includes identification information of a terminal to receive a paging message. It is characterized by including.
A method of receiving paging information of a terminal in a communication system using an orthogonal frequency division multiple access (OFDMA), when the current operation mode is a sleep mode, awake at a predetermined time point Determining whether at least one shared control channel (SCCH) frame allocated for paging information transmission from the base station has been received and, when the at least one SCCH frame is received, Detecting paging information from at least one SCCH frame, determining whether identification information of a terminal included in the paging information is identical to its own identification information, and receiving a paging message from the base station according to the determination result It includes.
In an apparatus for transmitting paging information of a base station in a communication system using an orthogonal frequency division multiple access (OFDMA), a packet is included in a first SCCH frame among a plurality of shared control channel (SCCH) frames. A first SCCH frame generator for inserting a first indication bit indicating a data information transmission frame and inserting packet data transmission information into an SCCH frame having the first indication bit inserted into a second SCCH frame of the plurality of SCCH frames; A second SCCH frame generator inserting a second indication bit indicating a paging information transmission frame and inserting paging information into an SCCH frame into which the second indication bit is inserted; an SCCH frame into which the packet data transmission information is inserted and the paging; And a SCCH transmitter for transmitting the information inserted SCCH frame to the terminal, the paging information Characterized by the identification information of the terminal to receive the paging message.
In an apparatus for receiving paging information of a terminal in a communication system using an orthogonal frequency division multiple access (OFDMA), when the current operation mode is a sleep mode, awake at a predetermined time point ) SCCH receiver transitioning to the base station to receive a first shared control channel (SCCH) frame from the base station, and whether the indication bit included in the first SCCH frame is a first indication bit indicating a paging information transmission frame Detecting paging information from the first SCCH frame when information indicating that a paging indication bit reader and an indication bit included in the first SCCH frame is the first indication bit is output from the paging instruction bit reader; The SCCH information reader and identification information of the terminal included in the paging information identify the terminal. Comprises: (SDCH Data Shared Channel) receiver determines whether or not the same as the beam, and in accordance with the paging controller and for outputting a result of the determination, it is determined that shared data channel for receiving a paging message from the base station.
In an apparatus for transmitting paging information of a base station in a communication system using an orthogonal frequency division multiple access (OFDMA), at least one SCCH of a plurality of first shared control channel (SCCH) frames A first SCCH frame generator for inserting paging information into a frame, a second SCCH frame generator for inserting an indication bit indicating that the at least one SCCH frame is a paging information transmission frame in a second SCCH frame, and the paging information is inserted A first SCCH transmitter for transmitting at least one SCCH frame to the terminals, and a second SCCH transmitter for transmitting the first SCCH frame with the indication bit inserted to the terminals, wherein the paging information receives a paging message. Characterized by the identification information of the terminal to be characterized.
A device for receiving paging information of a terminal in a communication system using an orthogonal frequency division multiple access (OFDMA), when the current operation mode is a sleep mode, awake at a predetermined time point SCCH receiver for transitioning to the ()) mode and receiving a first shared control channel (SCCH) frame from the base station, and the indication bit included in the first SCCH frame indicates that the second SCCH frame is a paging information transmission frame Information indicating whether the second SCCH frame is the paging information transmission frame so that the second SCCH frame is received when the indication bit included in the first SCCH frame is the first indication bit. A paging indication bit decoder for outputting the to the SCCH receiver, and wherein the second SCCH frame is And a paging controller that determines whether paging information is detected from the second SCCH frame, whether or not identification information of a terminal included in the paging information is identical to identification information of the corresponding terminal, and from the paging controller. And a shared data channel (SDCH) receiver for receiving a paging message from the base station according to the output determination result.
An apparatus for transmitting paging information of a base station in a communication system using an Orthogonal Frequency Division Multiple Access (OFDMA), the apparatus allocated to transmit paging information among a plurality of shared control channels (SCCHs) In the at least one SCCH frame, SCCH frame generator for inserting the paging information, and the SCCH transmitter for transmitting the at least one SCCH frame inserted the paging information to the terminal, the paging information terminal to receive the paging message Characterized by including identification information.
In an apparatus for receiving paging information of a terminal in a communication system using an orthogonal frequency division multiple access (OFDMA), when the current operation mode is a sleep mode, awake at a predetermined time point SCCH receiver for transitioning to the ()) mode and receiving at least one shared control channel (SCCH) frame allocated for transmission of paging information from the base station, and SCCH information reader for detecting paging information from the at least one SCCH frame And a paging controller for determining whether identification information of the terminal included in the paging information is the same as identification information of the corresponding terminal and outputting a determination result, and common data for receiving a paging message from the base station according to the determination result. And a shared data channel (SDCH) receiver.

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The operation principle of the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intentions or customs of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

The present invention provides a method for allowing a terminal to check whether paging is transmitted by receiving only a common control channel by transmitting an ID of a corresponding UE through a common control channel (SCCH) in an OFDMA based forwarding system. I would like to suggest. SCCH means a channel containing information necessary for demodulation of the SCCH frame transmitted through the SCCH.

Table 1 shows an example of SCCH information transmitted through SCCH.

Control Information Control bits C-RNTI 10 Resource info 6 Transport Block Size 8 New data indicator 2

In Table 1, C-RNTI (Cell-Radio Network Temporary Identity) is a kind of identifier of the terminal, and the terminal compares the pre-assigned C-RNTI and the C-RNTI of the SCCH and is transmitted to the corresponding terminal. You can check whether or not. Frequency resource information indicates what frequency resource has been allocated. The transport block size indicates the data size of the corresponding SDCH. The new data indicator indicates the number of data transmitted when HARQ is applied.

The above information is information necessary for demodulation, and other information corresponding thereto, such as transport block size information, may vary depending on a system in a manner of indicating a transport format identifier or an MCS level.

Next, the SCCH channel structure required for transmitting the information in Table 1 will be described. Mainly discussed methods include a method of separately transmitting SCCH information for each UE and a method of collecting SCCH information of a plurality of UEs and transmitting them at once.

2 illustrates a method of separately coding and transmitting SCCH information transmitted for each terminal.

In the method, the CRC may be configured in combination with the C-RNTI to determine whether the CRC has been transmitted to the UE through the CRC check. Hereinafter, 201 to 205 shown in FIG. 2 will be referred to as one "SCCH frame".

3 illustrates a method of collecting SCCH information of a plurality of terminals and transmitting them at once.

Referring to FIG. 3, all of the SDCH allocation information of N terminals from 301 to 303 are transmitted at once. This method uses the CRC of 308 for the entire information, which has the advantage of reducing the CRC overhead. However, since all terminals in the cell should be able to receive, the MCS level may be set differently or the transmission power may be different depending on the position of the terminal. Difficult to adjust This also increases the likelihood that unnecessary power or resources will be used.

Therefore, in consideration of the advantages and disadvantages of the two methods, a method of transmitting the SCCH information of the corresponding terminals by grouping only the terminals having similar channel environments by combining the two methods. That is, as in the second method, a plurality of UEs are bundled and transmitted at once, but there may be a method of placing several SCCH channels. This channel structure is shown in FIG.

Referring to FIG. 4, there are three SCCH channels capable of transmitting scheduling information to a plurality of terminals. Since terminals belonging to each channel belong to a similar channel environment, it is possible to set an appropriate MCS level or power for each channel, so that resources can be used more efficiently than the second method described above. For example, suppose that SCCH # 1 of the 404 is grouped with only the UEs having a good channel environment and transmits using a high coding rate and a high modulation format, and SCCH # 3 has a bad channel environment or a cell radius. It may be transmitted using a low MCS level considering the terminals. In addition, SCCH # 2 is allocated to a terminal having a medium channel environment.

Since this method bundles and transmits multiple UEs for each SCCH channel, it should be informed when the number of UEs to be transmitted is variable or the frequency resource usage of the SCCH is variable. Therefore, the introduction of two types of SCCH channels to implement the above method is discussed. These are called first SCCH (primary SCCH, hereinafter "P-SCCH") and second SCCH (secondary SCCH, "S-SCCH"). The UE first transmits whether or not scheduling information exists in the pre-assigned S-SCCH and whether or not information on how many UEs are included in the S-SCCH through the P-SCCH.

In FIG. 4, 401-403 are P-SCCH, and each shows the information of S-SCCH # 1-S-SCCH # 3. The terminal receives the demodulation information or transmission information of the S-SCCH allocated to the terminal based on the information of the P-SCCH.

As an example of the P-SCCH, as shown in Table 2, the size of the S-SCCH to transmit the actual resource information may be transmitted as a transport block size.

Information # of bits Information block size for S-SCCH1 3 * Information block size for S-SCCH2 3 * Information block size for S-SCCH3 3 *

If the MCS level of each S-SCCH is predefined or configured, since the UE knows how much resource will be used for each S-SCCH transmission using only a transport block size, demodulation is possible. In addition, a method of informing channel information of the S-SCCH may be used.

On the other hand, among the methods of sending common information using the SDCH, a generally conceivable method is a method of transmitting using common C-RNTI. The common C-RNTI is a structure in which the terminal receives the SDCH when a part of the C-RNTI is set to be shared and the SCCH matching the common C-RNTI is received. This method can easily use the SDCH for paging transmission, but at every paging time, the UE receives the SCCH and decodes the SDCH using the common C-RNTI and then whether there is a corresponding paging UE-id. You should check whether Therefore, when there are many terminals corresponding to paging, there is a disadvantage that a terminal not actually related to paging must receive the SDCH every time. If this decoding occurs at every paging reception point, the power consumption will also increase.

Therefore, in the embodiment of the present invention, the ID information of the terminal to transmit the paging is transmitted in the common control channel.

5 schematically illustrates the operation of a terminal according to an embodiment of the present invention.

Referring to FIG. 5, when the terminal receives the SCCH in step 501, the terminal proceeds to step 502 and checks whether the paging terminal ID existing in the information of the SCCH is the same as the terminal ID assigned to the corresponding terminal. If the terminal ID is the same as the check result, the process proceeds to step 503 in which the SDCH is received in order to receive the paging message and performs a paging procedure. On the other hand, if the terminal ID is not the same, the process proceeds to step 504 and goes back to the sleep mode.

Meanwhile, if only the paging terminal ID is used for the paging procedure according to the system, the process of receiving the SDCH of step 501 may be omitted. In other words, according to an embodiment of the present invention, it is possible to determine whether paging is transmitted by simply transmitting a paging terminal ID to the common control channel and receiving and demodulating the SCCH.

However, in order to transmit the paging terminal ID to the SCCH, it is necessary to solve a problem in which the length of the paging terminal ID and the C-RNTI are different. In the case of C-RNTI, an ID allocated to distinguish between active UEs that are serviced and connected by the network may be managed for each cell, and thus an ID having a short length of about 10 bits is used. However, since the terminal in the idle state is not managed for each cell but managed in a wider unit, an ID of 20 bits or more longer than the terminal in the active state needs to be allocated. As such, in order to include a long length paging terminal ID in the SCCH, a different form of SCCH is required. However, if an independent SCCH is allocated for paging, the resources of the SCCH may be wasted if paging is not transmitted at that time, so that it can be used in common with the general SCCH rather than independently. It is desirable to design the SCCH to minimize wasted resources. Therefore, the present invention proposes an SCCH for efficient paging transmission.

The first embodiment of the present invention is a method of notifying the terminal whether the SCCH is used for general packet transmission or SCCH used for paging transmission by adding information bits in addition to the existing information as information of the SCCH. Hereinafter, the added information bit is called a paging indication bit.

6 illustrates an SCCH frame structure of an SCCH channel according to a first embodiment of the present invention.

Referring to FIG. 6, the SCCH frame is divided into a packet transmission frame and a paging transmission frame. The packet transmission frame includes information 602 to 606 for transmitting a packet, and the frame for paging transmission includes ID information 608 of a terminal to transmit paging. 601 and 607 are paging indication bits for distinguishing a frame for packet transmission and a frame for paging transmission. 0 (601) is inserted as a paging indication bit value in the SCCH frame for packet data transmission, and 1 (607) is inserted as a paging indication bit value in the SCCH frame for paging terminal ID transmission.

Also, the paging SCCH frame according to the first embodiment of the present invention contains only paging terminal ID information as shown in 608. However, according to the length of the paging terminal ID information and the size of the packet transmission information, channel (frequency resource) information or information necessary for demodulation of the SDCH in which the paging message is transmitted may be inserted. That is, when a length of a paging terminal ID is short or when a paging terminal ID is assigned by grouping several terminals, it is possible to use a short ID. In this case, since the number of bits for the paging terminal ID may be reduced, space may be left, and channel (frequency resource) information or information necessary for demodulation of the SDCH through which the paging message is transmitted may be inserted.

Also, if the terminal cannot transmit channel information of the SDCH through which the paging message is transmitted, information such as frequency resource information and transmission block size (TB size) of the SDCH through which the paging message is transmitted is previously defined in the specification. Or preset through a broadcast channel. In other words, if the paging terminal ID transmitted through the paging SCCH is the same as the paging terminal ID assigned to the terminal, the terminal receives the paging message by demodulating the SDCH using the already set SDCH information.

7 is a diagram illustrating a procedure for a method of transmitting an SCCH frame by a base station according to the first embodiment of the present invention.

Referring to FIG. 7, when the SCCH transmission occurs in step 701, the base station checks whether the generated SCCH is for paging transmission in step 702. If the check result is for paging transmission, the process proceeds to step 703 to set the paging indication bit value to 1, and inserts the paging terminal ID in step 704 and transmits an SCCH frame. On the other hand, if the check result is not for paging transmission, the process proceeds to step 706 to set the paging indication bit value to 0, inserts general packet control information, and performs SCCH frame transmission.

Next, the SCCH frame reception procedure of the UE will be described. The terminal in the active state does not need to receive paging and the terminal in the idle state does not need to receive the SCCH frame for packet transmission because it is not ready to perform packet data transmission. Therefore, the SCCH frame reception procedure of the terminal in the idle state and the terminal in the active state is distinguished.

First, an SCCH frame reception method of an idle state terminal will be described with reference to FIG. 8.

Referring to FIG. 8, first, a UE receives an SCCH frame in step 801 to read information included in an SCCH frame. After completing the CRC check, the terminal proceeds to step 802 to read the paging instruction bit value, and determines whether the paging instruction bit value is 1 or 0 in step 803. If the paging indication bit value is 1 as a result of determination, the terminal proceeds to step 804 so as to interpret the paging terminal ID included in the SCCH frame. In step 805, the interpreted paging terminal ID is compared with the paging terminal ID assigned to the corresponding terminal. If the two results match, the terminal proceeds to step 806 to receive the SDCH and perform a paging procedure. On the other hand, if the two informations are different, the process proceeds to step 808 and goes back to sleep mode. If the paging indication bit value is 0, the UE proceeds to step 807 and discards the SCCH frame received in step 801 and enters the sleep mode again.

9 shows a procedure for a method of receiving an SCCH frame by an active terminal.

Referring to FIG. 9, when the UE receives the SCCH frame in step 901, the terminal performs decoding and CRC check and then checks the paging indication bit value in step 902. If the paging indication bit value is set to 0, the received SCCH frame is a typical SCCH frame for packet transmission, and the terminal proceeds to step 905 to read related information and receive the SDCH. On the other hand, if the paging indication bit value is set to 1, the terminal proceeds to step 904 and discards the received SCCH frame information and ends the SCCH frame receiving process.

FIG. 10 shows a configuration of an apparatus for transmitting an SCCH frame of a base station according to the first embodiment of the present invention.

Referring to FIG. 10, an SCCH frame transmission apparatus of a base station includes two types of SCCH generators 1003 and 1004. The SCCH generator 1003 is used when signaling general packet transmission information. The SCCH generator 1003 receives relevant information from the packet data transmission controller 1001 to generate an SCCH frame. The SCCH generator 1004 is used to generate an SCCH frame for paging information transmission, and generates a SCCH frame by receiving a paging terminal indicator from the paging controller 1002. The SCCH frame generated by the SCCH generator 1003 or 1004 is transmitted through the SCCH transmitter 1005.

11 illustrates a configuration of an SCCH frame receiving apparatus of a terminal in an idle state.

Referring to FIG. 11, an SCCH frame receiving apparatus of a terminal includes a SCCH receiver 1104 for receiving an SCCH frame and a paging instruction bit reader 1103 for reading a paging instruction bit. The paging instruction bit reader 1103 transmits the result of reading the paging instruction bit value to the SCCH information reader 1102, and the SCCH information reader 1102 transmits paging information with the information transmitted from the paging instruction bit reader 1103. It is determined whether or not the frame is a SCCH frame. If the result of reading from the reader 1103 is an SCCH frame for paging information transmission, the SCCH frame is transmitted to the SCCH information reader 1102 to read the paging terminal ID, and if it is not an SCCH frame for paging information transmission, the SCCH frame needs to be read. Since there is no paging terminal ID is read and transferred to the paging controller 1101. The paging controller 1101 compares a paging terminal ID transmitted from the SCCH information reader 1102 with a paging terminal ID that has already been allocated to determine whether or not paging has come to the corresponding terminal. The result is then sent to the SDCH reception controller 1105.

12 illustrates a configuration of an SCCH frame receiving apparatus of an active terminal.

Referring to FIG. 12, the SCCH frame receiving apparatus of an active terminal has an idle state shown in FIG. 11 except that the packet data receiving controller 1201 is inserted in place of the paging controller 1101 and the SDCH receiving controller 1105. SCCH frame receiving apparatus of the terminal and the configuration is the same. SCCH information reader 1202 reads packet data reception information and forwards it to packet data reception controller 1201.

On the other hand, since the SCCH frame includes one bit of paging indication bit in every TTI, transmission overhead may be a transmission overhead. It can also transmit bits. In this case, the terminal may apply the first embodiment of the present invention only at every paging time without distinguishing between the idle state and the active state. In addition, when there are a plurality of SCCHs, only the specific SCCH is allowed to transmit paging information, so that the UE can apply the first embodiment of the present invention only when receiving the SCCH frame.

Next, a second embodiment of the present invention will be described. According to the second embodiment of the present invention, when using a P-SCCH and an S-SCCH, a specific S-SCCH is defined as an S-SCCH for paging transmission, and whether a paging terminal ID is transmitted to the corresponding S-SCCH. For this purpose, the p-SCCH includes a paging indication bit.

Table 3 shows the information included in the P-SCCH for the preferred implementation of the second embodiment of the present invention. For convenience of description, in the second embodiment of the present invention, it is assumed that S-SCCH3 is an S-SCCH for paging transmission. However, the paging transmission S-SCCH is set when notifying the corresponding S-SCCH information in advance or paging a fixed channel in the specification. It can be defined as a transmission S-SCCH.

Information # of bits Information block size for S-SCCH1 3 Information block size for S-SCCH2 3 Information block size for S-SCCH3 3 Paging indication bit for S-SCCH3 m

In the second embodiment of the present invention, the paging indication bit may vary depending on the implementation method. That is, if all of the S-SCCH3 is used for paging transmission at the time of transmission, the paging indication bit uses only 1 bit information indicating whether paging is present or not, and the terminal in the active state sets the paging indication bit for paging transmission. If not, S-SCCH3 may not be received in the TTI. In this case, m = 1 in Table 3 above.

As another method, when both scheduling information and paging information for general packet transmission are transmitted through S-SCCH3, the amount of paging information may be informed using a paging indication bit. That is, m bits may indicate the number of paging information. For example, when m = 2 and the paging indication bit value is set to 1, the base station may know that paging terminal IDs for three paging terminals and scheduling information for packet data transmission are included. SCCH3 can be received.

13 shows a structure of S-SCCH3 for implementing the second embodiment of the present invention.

Referring to FIG. 13, M paging terminal ID information 1301 to 1302 exists, and N scheduling information for packet data transmission exists 1303 to 1304.

14 shows a procedure for a method for receiving an SCCH according to a second embodiment of the present invention by a terminal in an idle state.

Referring to FIG. 14, the terminal in the idle state wakes up from the sleep mode at every paging reception time and receives the P-SCCH in step 1401. Next, after reading the paging indication bit present in the P-SCCH in step 1402 and proceeds to step 1403 to check the paging indication bit value. If the check result is set to a value other than 0, the UE reads S-SCCH3 in step 1404. Since there are M paging terminal IDs that receive the S-SCCH3 and signal the paging indication bits, in step 1406, the M paging terminal IDs are read one by one to obtain a paging terminal ID, and the process proceeds to step 1407 to match the paging terminal ID assigned to the terminal. Check whether or not. If the result of the check is matched, the process proceeds to step 1408 to receive the SDCH and performs a paging procedure. However, even if all M numbers are matched, if there is no matching paging terminal ID, the terminal proceeds to the sleep mode again in step 1410.

If the paging indication bit value is set to 0 in step 1403, the controller proceeds to step 1409 to discard the received P-SCCH and proceeds to step 1410 to enter a sleep mode.

FIG. 15 illustrates a procedure for a method of receiving S-SCCH of a terminal receiving SDCH scheduling through SCCH3 according to a second embodiment of the present invention among active terminals.

Referring to FIG. 15, the terminal receives a P-SCCH in step 1501 and checks a paging indication bit in step 1502. In operation 1503, the S-SCCH3 is received. The UE can know the amount of information for paging transmission and information for packet data transmission through the P-SCCH. Since the terminal in the active state does not need information for paging transmission, in step 1503, the terminal receives all of the plurality of information, and in step 1505, compares the order of information and M of the received information, and ignores M information in step 1508 and 1506. In the step, only the information after that is recognized as information for packet reception. In step 1507, a general packet data receiving procedure is performed.

16 shows an apparatus for transmitting a base station according to a second embodiment of the present invention.

Referring to FIG. 16, the transmitter according to the second embodiment of the present invention includes a P-SCCH generator 1604 for generating a P-SCCH containing reception information capable of receiving an S-SCCH. Since scheduling information and paging information are required to generate the P-SCCH, the P-SCCH generator 1604 receives N from the packet data transmission controller 1601 and M from the paging controller 1602 to generate the P-SCCH. do. In the above, M and N are amounts of control information to be transmitted, which means the number of terminals receiving paging data and the number of scheduled terminals, respectively, and the transport block size can be determined based on these values. In addition, the S-SCCH3 generator 1603 generates S-SCCH3 by receiving respective control information as shown in FIG. The S-SCCH3 generated by the S-SCCH3 generator 1603 is transmitted through the S-SCCH3 transmitter 1605, and the P-SCCH generated by the P-SCCH 1604 is transmitted through the P-SCCH transmitter 1606. .

17 illustrates a receiver of a terminal in an idle state according to an embodiment of the present invention.

Referring to FIG. 17, a P-SCCH receiver 1708 is connected with a paging instruction bit decoder 1705 for reading a paging instruction bit. The paging indication bit decoder 1705 derives an M value that can indicate how many terminals the paging information has been transmitted. The S-SCCH3 receiver 1707 receives the S-SCCH3 by receiving the transport block size (TBS) information of the paging indication bit decoder 1705, and transfers the received S-SCCH3 to the S-SCCH3 information reader 1703. . The S-SCCH3 information reader 1703 reads the paging terminal ID and transmits the paging terminal ID to the paging controller 1701 according to the reception procedure of the idle state terminal. The paging controller 1701 compares the paging terminal ID information of the S-SCCH3 with the paging terminal ID information already assigned to the terminal, determines whether to send the paging, and transfers the result to the SDCH receiving controller 1702.

18 shows an S-SCCH3 receiving apparatus of a terminal in an active state for receiving S-SCCH3 according to the second embodiment of the present invention.

Referring to FIG. 18, a P-SCCH information reader 1804 and a paging instruction reader 1803 are connected to a P-SCCH receiver 1806 to determine whether paging information is present in an active terminal. In addition, the S-SCCH3 information reader 1802 exists because it is necessary to read information for packet transmission, and according to the above-described procedure, an amount of paging information is received to read packet data information. The S-SCCH3 information reader 1802 reads various pieces of information necessary for actual packet data reception using the given information and passes the result to the packet data reception controller 1801.

Next, a third embodiment of the present invention will be described. According to the third embodiment of the present invention, in the method of allocating downlink SDCH as two channels of P-SCCH and S-SCCH as in the second embodiment, a specific S-SCCH is always defined only for paging terminal ID transmission.

Information of the P-SCCH necessary for the preferred embodiment of the third embodiment of the present invention can be defined as shown in Table 4. In Table 4, the number of bits is a value determined according to the information amount of the S-SCCH.

Information # of bits Information block size for S-SCCH1 3 Information block size for S-SCCH2 3 Information block size for S-SCCH3 3 Information block size for S-SCCH4 (for paging transmission) 3

As described in the related art, a plurality of S-SCCHs may be defined by dividing terminals according to channel environments or locations and applying different MCS levels to each group. In the third embodiment of the present invention, when setting the S-SCCH, a special S-SCCH for paging information transmission is defined. For convenience of description, this is defined as S-SCCH4. Whether paging information is transmitted through S-SCCH4 may be determined based on transport block size information.

19 shows a structure of S-SCCH4 for implementing a third embodiment of the present invention.

Referring to FIG. 19, when the S-SCCH4 according to the third embodiment of the present invention is used, paging information of a plurality of terminals can be transmitted, and thus, a plurality of paging terminal ID information is configured as one transport block (1901 to 1902). ). Of course, if necessary, information related to paging may be additionally defined in addition to the paging terminal ID.

20 illustrates a S-SCCH4 reception method of a terminal in an idle state according to a third embodiment of the present invention.

Referring to FIG. 20, first, a UE receives a P-SCCH in step 2001 and determines whether S-SCCH4 has been transmitted in step 2002. At this time, if the size of the transport block of the S-SCCH4 is greater than 0, it is determined that the S-SCCH4 is transmitted. If it is determined that the S-SCCH4 is not transmitted, the terminal proceeds to step 2005 and enters the sleep mode again. If the S-SCCH4 is transmitted, the terminal proceeds to step 2003 and reads the S-SCCH information to obtain paging terminal ID information. Next, the terminal proceeds to step 2004 and compares the allocated paging terminal ID information with the terminal ID information obtained in S-SCCH4 and checks whether the two information is identical. As a result of the check, if the two information match, the terminal receives the SDCH in step 2005 and performs the related paging procedure. If the two information does not match, the terminal enters the sleep mode in step 2006.

On the other hand, since the terminal in the active state is not set to receive the S-SCCH4, a procedure for implementing the third embodiment of the present invention is not required separately, and a general packet data reception operation may be performed.

21 shows a structure of a P-SCCH / S-SCCH transmitter of a base station for the preferred implementation of the third embodiment of the present invention.

Referring to FIG. 21, in order to transmit paging terminal ID information, the S-SCCH4 generator 2102 receives the paging terminal ID information from the paging controller 2101 and generates S-SCCH4. The S-SCCH4 generated by the S-SCCH4 generator 2102 is transmitted via the S-SCCH4 transmitter 2103. In addition, there is a P-SCCH generator 2104 for generating a P-SCCH to indicate whether or not S-SCCH4 is transmitted. Since the P-SCCH generator 2104 also includes other S-SCCH information, the P-SCCH generator 2104 collects TBS information of the other S-SCCH and TBS information input from the paging controller 2101 to generate the P-SCCH. The P-SCCH generated by the P-SCCH generator 2104 is coded and transmitted through the P-SCCH transmitter 2105.

22 shows an S-SCCH4 receiving apparatus of a terminal in an idle state for a preferred implementation of the third embodiment of the present invention.

Referring to FIG. 22, there is a P-SCCH information reader 2204 because TBS information must be obtained for demodulation of the transmitted S-SCCH when S-SCCH4 is transmitted and when S-SCCH4 is transmitted. . The S-SCCH4 receiver 2206 receives the S-SCCH4 based on the information received from the P-SCCH information reader 2204 and transfers it to the S-SCCH4 information reader 2203. The S-SCCH4 information reader 2203 reads the paging terminal ID information and inputs it to the paging controller 2201. The paging controller 2201 compares the input paging terminal ID information with the already allocated paging terminal ID information to determine whether paging is transmitted to the corresponding terminal, and transmits the determination result to the SDCH reception controller 2202.

23 shows a structure of an S-SCCH for implementing the fourth embodiment of the present invention.

Referring to FIG. 23, the paging transmission frame according to the fourth embodiment of the present invention does not have a paging instruction bit for distinguishing a packet transmission frame and a paging transmission frame, unlike the first embodiment of the present invention. The C-RNTI information 2306 is inserted in the same manner as the frame for packet transmission. The C-RNTI 2306 is used for terminals in the active state, but some C-RNTIs may be allocated for public use. The C-RNTI is predefined or broadcasted to inform the terminal of the idle state. Hereinafter, for convenience of description, a C-RNTI commonly used for paging transmission will be referred to as C-RNTI_p.

Meanwhile, only the C-RNTI 2306 and the paging information are transmitted through a frame for paging transmission for implementing the fourth embodiment of the present invention. The paging information may include a paging terminal ID 2307. However, additional information may be inserted according to the length of the paging terminal ID information and the size of the packet transmission information. That is, when a length of a paging terminal ID is short or when a paging terminal ID is assigned by grouping several terminals, it is possible to use a short ID. In this case, since the number of bits for the paging terminal ID may be reduced, space may be left, and as additional information, channel (frequency resource) information or information necessary for demodulation of the SDCH through which the paging message is transmitted may be inserted. .

Also, if the terminal cannot transmit channel information of the SDCH through which the paging message is transmitted, information such as frequency resource information and transmission block size (TB size) of the SDCH through which the paging message is transmitted is previously defined in the specification. Or preset through a broadcast channel. In other words, if the paging terminal ID transmitted through the paging SCCH is the same as the paging terminal ID assigned to the terminal, the terminal receives the paging message by demodulating the SDCH using the already set SDCH information.

24 is a diagram illustrating a procedure for a method of transmitting an SCCH frame by a base station according to the fourth embodiment of the present invention.

Referring to FIG. 24, when the SCCH transmission occurs in step 2401, the base station checks whether the generated SCCH is for paging transmission in step 2402. If the check result is for paging transmission, the process proceeds to step 2403 to set the C-RNTI to C-RNTI_p, and inserts the paging terminal ID in step 2404 to transmit the SCCH frame. On the other hand, if the result of the check is not for paging transmission, the process proceeds to step 2406 and inserts general packet control information and performs SCCH frame transmission.

Next, the SCCH frame reception procedure of the UE will be described.

The terminal in the active state does not need to receive the SCCH frame when the C-RNTI is not assigned to the terminal. Therefore, the terminal in the active state does not need a separate procedure for receiving the SCCH frame.

Next, the SCCH frame receiving method of the idle state terminal will be described with reference to FIG.

Referring to FIG. 25, a terminal in an idle state first receives an SCCH frame in step 2501 to read information included in an SCCH frame. After completing the CRC check, the terminal proceeds to step 2502 to read the C-RNTI value, and checks whether the C-RNTI is C-RNTI_p in step 2503. If it is determined that C-RNTI_p is a SCCH frame for paging transmission, the terminal proceeds to step 2504 and interprets the paging terminal ID included in the SCCH frame. In step 2505, the interpreted paging terminal ID is compared with the paging terminal ID assigned to the corresponding terminal. If the two results match, the UE proceeds to step 2506 and receives the SDCH and performs a paging procedure. On the other hand, if the two information are different, the process proceeds to step 2508 to go back to sleep mode. On the other hand, if the result of the check in step 2503 is not C-RNTI_p, the UE proceeds to step 2507 and discards the SCCH frame received in step 2501 and enters the sleep mode again in step 2508.

FIG. 26 shows a configuration of an apparatus for transmitting an SCCH frame of a base station according to the fourth embodiment of the present invention.

Referring to FIG. 26, an SCCH frame transmitter of a base station includes two types of SCCH generators 2603 and 2604. The SCCH generator 2603 is used when signaling general packet transmission information. The SCCH generator 2603 generates an SCCH frame by receiving relevant information from the packet data transmission controller 2601. The SCCH generator 2604 is used to generate an SCCH frame for paging information transmission, and generates a SCCH frame by receiving a paging terminal ID and C-RNTI_p from the paging controller 2602. The SCCH frame generated by the SCCH generator 2603 or 2604 is transmitted through the SCCH transmitter 2605.

27 shows a configuration of an SCCH frame receiving apparatus of a terminal in an idle state according to a fourth embodiment of the present invention.

Referring to FIG. 27, an SCCH frame receiving apparatus of a terminal includes an SCCH receiver 2704 that receives an SCCH frame and a C-RNTI reader 2703 for reading a C-RNTI value. The C-RNTI reader 2703 transmits the result of reading the C-RNTI value to the SCCH information reader 2702, and the SCCH information reader 2702 transmits paging information with the information transmitted from the C-RNTI reader 2703. It is determined whether or not the frame is a SCCH frame. If the result of reading from the C-RNTI reader 2703 is an SCCH frame for transmitting paging information, the SCCH frame is transmitted to the SCCH information reader 2702 for reading the paging terminal ID. Since there is no need to read, the paging terminal ID is read and transmitted to the paging controller 2701. The paging controller 2701 compares a paging terminal ID transmitted from the SCCH information reader 2702 with a paging terminal ID that has already been allocated, and determines whether paging has come or not to the terminal. The result of the determination is then transmitted to the SDCH reception controller 2705.

On the other hand, the SCCH receiver of the terminal in the active state according to the fourth embodiment of the present invention may use the general SCCH receiver shown in FIG. That is, the SCCH frame receiving apparatus of the terminal in the active state includes a packet data receiving controller 1201, an SCCH information reader 1202, and a paging indicator bit reader 1203. It also includes a switch for determining whether to read SCCH information according to the type of bit. SCCH information reader 1202 reads packet data reception information and forwards it to packet data reception controller 1201.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

In the present invention that operates as described in detail above, the effects obtained by the representative ones of the disclosed inventions will be briefly described as follows.

In the case of applying the present invention, the terminal may wake up at every paging time and demodulate the common data channel through which the paging message is transmitted to determine whether the paging is transmitted by receiving only the common control channel. . Therefore, since the power consumption of the terminal in the idle state can be reduced, the standby time of the terminal can be increased.

Claims (32)

A method of transmitting paging information of a base station in a communication system using an orthogonal frequency division multiple access (OFDMA), Inserting one of a first indication bit indicating a packet data information transmission frame and a second indication bit indicating a paging information transmission frame into each of a plurality of shared control channel (SCCH) frames; Inserting packet data transmission information into the SCCH frame into which the first indication bit is inserted and inserting paging information into the SCCH frame into which the second indication bit is inserted; Transmitting the SCCH frame into which the packet data transmission information is inserted and the SCCH frame into which the paging information is inserted; The paging information transmission method comprising the identification information of the terminal to receive the paging message. The method of claim 1, The paging information may further include at least one of shared data channel information, demodulation information, and channel information on which the paging message is transmitted, according to the size of identification information of the terminal. . A method for receiving paging information of a terminal in a communication system using an orthogonal frequency division multiple access (OFDMA), When the current operation mode is a sleep mode, transitioning to an awake mode at a predetermined time point and receiving a first shared control channel (SCCH) frame from a base station; Determining whether the indication bit included in the first SCCH frame is a first indication bit indicating a paging information transmission frame; Detecting paging information from the first SCCH frame when the indication bit included in the first SCCH frame is the first indication bit; And determining whether identification information of the terminal included in the paging information is identical to the identification information of the terminal, and receiving a paging message from the base station according to the determination result. The method of claim 3, Determining whether the indication bit included in the first SCCH frame is a second indication bit indicating a packet data information transmission frame when the indication bit included in the first SCCH frame is not the first indication bit; If the indication bit included in the first SCCH frame is the second indication bit, discarding the first SCCH frame and transitioning to the sleep mode. The method of claim 3, When the current operation mode is an active mode, receiving a second SCCH frame from the base station; Determining whether the indication bit included in the second SCCH frame is the first indication bit; Discarding the second SCCH frame when the indication bit included in the second SCCH frame is the first indication bit; And if the indication bit included in the second SCCH frame is not the first indication bit, determining the second SCCH frame as a packet data information transmission frame and receiving packet data transmission information from the base station. How to receive information. A method of transmitting paging information of a base station in a communication system using an orthogonal frequency division multiple access (OFDMA), Dividing a plurality of shared control channel (SCCH) frames into a first SCCH frame and a plurality of second SCCH frames; Inserting paging information into at least one SCCH frame of the plurality of second SCCH frames, and inserting an indication bit indicating that the at least one SCCH frame is a paging information transmission frame into the first SCCH frame; Transmitting the first SCCH frame with the indication bit inserted therein and at least one SCCH frame with the paging information inserted therein; The paging information transmission method comprising the identification information of the terminal to receive the paging message. The method of claim 6, The paging information further comprises at least one of information indicating the amount of paging information to be received by the terminal corresponding to the identification information and the channel information to which the paging message is transmitted. A method for receiving paging information of a terminal in a communication system using an orthogonal frequency division multiple access (OFDMA), When the current operation mode is a sleep mode, transitioning to an awake mode at a predetermined time point and receiving a first shared control channel (SCCH) frame from a base station; Determining whether an indication bit included in the first SCCH frame is a first indication bit indicating that a second SCCH frame is a paging information transmission frame; If the indication bit included in the first SCCH frame is the first indication bit, receiving the second SCCH frame; Detecting paging information from the second SCCH frame, determining whether identification information of the terminal included in the paging information is identical to its own identification information, and receiving a paging message from the base station according to a determination result; How to Receive Paging Information. 9. The method of claim 8, If the indication bit included in the first SCCH frame is not the first indication bit, discarding the first SCCH frame and transitioning to the sleep mode. 9. The method of claim 8, When the current operation mode is an active mode, receiving the first SCCH frame from the base station; Determining whether an indication bit included in the first SCCH frame is the first indication bit; If the indication bit included in the first SCCH frame is the first indication bit, receiving the second SCCH frame; And receiving information on packet data included in the second SCCH frame by using information indicating the amount of paging information included in the first SCCH frame. A method of transmitting paging information of a base station in a communication system using an orthogonal frequency division multiple access (OFDMA), Inserting paging information into at least one SCCH frame allocated to transmit paging information among a plurality of shared control channels (SCCHs); Transmitting at least one SCCH frame into which the paging information is inserted, to terminals; The paging information transmission method comprising the identification information of the terminal to receive the paging message. 12. The method of claim 11, The paging information may further include at least one of cell-radio network temporary identity information used for transmitting the paging information and channel information on which the paging message is transmitted. . A method for receiving paging information of a terminal in a communication system using an orthogonal frequency division multiple access (OFDMA), When the current operation mode is the sleep mode, at least one shared control channel (SCCH) frame allocated for transmitting paging information from the base station is received by transitioning to the awake mode at a predetermined time point. Determining whether or not When the at least one SCCH frame is received, detecting paging information from the at least one SCCH frame, and determining whether identification information of the terminal included in the paging information is identical to its own identification information; And receiving a paging message from the base station according to the determination result. 14. The method of claim 13, The paging information may further include at least one of cell-radio network temporary identity information used for transmitting the paging information and channel information on which the paging message is transmitted. . An apparatus for transmitting paging information of a base station in a communication system using an orthogonal frequency division multiple access (OFDMA), A first indication bit indicating a packet data information transmission frame is inserted into a first SCCH frame among a plurality of shared control channel (SCCH) frames, and the packet data transmission information is inserted into an SCCH frame into which the first indication bit is inserted. A first SCCH frame generator to insert, A second SCCH frame generator inserting a second indication bit indicating a paging information transmission frame into a second SCCH frame among the plurality of SCCH frames and inserting paging information into an SCCH frame into which the second indication bit is inserted; A SCCH transmitter for transmitting the SCCH frame into which the packet data transmission information is inserted and the SCCH frame into which the paging information is inserted; And the paging information includes identification information of a terminal to receive a paging message. 16. The method of claim 15, The paging information may further include at least one of shared data channel information, demodulation information, and channel information on which the paging message is transmitted, according to the size of identification information of the terminal. . An apparatus for receiving paging information of a terminal in a communication system using an orthogonal frequency division multiple access (OFDMA), When the current operation mode is the sleep mode, the SCCH receiver transitions to the awake mode at a predetermined time point and receives a first shared control channel (SCCH) frame from the base station, A paging indication bit reader for determining whether the indication bit included in the first SCCH frame is a first indication bit indicating a paging information transmission frame; An SCCH information reader for detecting paging information from the first SCCH frame when information indicating that the indication bit included in the first SCCH frame is the first indication bit is output from the paging indication bit reader; A paging controller which determines whether identification information of the terminal included in the paging information is identical to identification information of the corresponding terminal and outputs a determination result; And a shared data channel (SDCH) receiver for receiving a paging message from the base station according to the determination result. 18. The method of claim 17, The paging indication bit reader determines whether the indication bit included in the first SCCH frame is a second indication bit indicating a packet data information transmission frame when the indication bit included in the first SCCH frame is not the first indication bit. Determine, and if the indication bit included in the first SCCH frame is determined to be the second indication bit, discarding the first SCCH frame. 18. The method of claim 17, The SCCH receiver receives a second SCCH frame from the base station when the current operation mode is an active mode, The paging indication bit reader determines whether the indication bit included in the second SCCH frame is the first indication bit, and if the indication bit included in the second SCCH frame is the first indication bit, the second indication bit Discarding the SCCH frame and if the indication bit included in the second SCCH frame is not the first indication bit, the SCCH indicates information indicating that the indication bit included in the second SCCH frame is not the first indication bit. Output to an information reader, The SCCH information reader determines that the second SCCH frame is a packet data information transmission frame when information indicating that the indication bit included in the second SCCH frame is not the first indication bit is output. And outputs information indicating that the packet data information transmission frame is provided. A packet data reception controller configured to control a packet data receiver to receive packet data transmission information from the base station when information indicating that the second SCCH frame is the packet data information transmission frame is output; And the packet data receiver for receiving the packet data transmission information from the base station under the control of the packet data reception controller. An apparatus for transmitting paging information of a base station in a communication system using an orthogonal frequency division multiple access (OFDMA), A first SCCH frame generator for inserting paging information into at least one SCCH frame among a plurality of first shared control channel (SCCH) frames; A second SCCH frame generator inserting an indication bit indicating that the at least one SCCH frame is a paging information transmission frame in a second SCCH frame; A first SCCH transmitter for transmitting at least one SCCH frame into which paging information is inserted, to terminals; A second SCCH transmitter for transmitting the first SCCH frame with the indication bit inserted to the terminals; And the paging information includes identification information of a terminal to receive a paging message. 21. The method of claim 20, And the paging information further comprises at least one of information indicating an amount of paging information to be received by a terminal corresponding to the identification information and channel information on which the paging message is transmitted. An apparatus for receiving paging information of a terminal in a communication system using an orthogonal frequency division multiple access (OFDMA), When the current operation mode is the sleep mode, the SCCH receiver transitions to the awake mode at a predetermined time point to receive a first shared control channel (SCCH) frame from the base station, It is determined whether the indication bit included in the first SCCH frame is a first indication bit indicating that a second SCCH frame is a paging information transmission frame, and the indication bit included in the first SCCH frame is the first indication bit. A paging indication bit decoder configured to output information indicating that the second SCCH frame is the paging information transmission frame to the SCCH receiver so that the second SCCH frame is received; An SCCH information reader that detects paging information from the second SCCH frame when the second SCCH frame is received from the SCCH receiver; A paging controller for determining whether identification information of the terminal included in the paging information is identical to identification information of the corresponding terminal; And a shared data channel (SDCH) receiver configured to receive a paging message from the base station according to the determination result output from the paging controller. 23. The method of claim 22, And the paging indication bit decoder discards the first SCCH frame when the indication bit included in the first SCCH frame is not the first indication bit. 23. The method of claim 22, The SCCH receiver receives the first SCCH frame from the base station when the current operation mode is an active mode, The paging indication bit decoder determines whether the indication bit included in the first SCCH frame is the first indication bit, and if the indication bit included in the first SCCH frame is the first indication bit, the second SCCH Outputs information indicating that the second SCCH frame is the paging information transmission frame to the SCCH receiver so that an indication bit included in the first SCCH frame receives a frame; And a packet data receiver configured to receive information on packet data included in the second SCCH frame by using information indicating the amount of paging information included in the first SCCH frame. An apparatus for transmitting paging information of a base station in a communication system using an orthogonal frequency division multiple access (OFDMA), An SCCH frame generator inserting paging information into at least one SCCH frame allocated for paging information transmission among a plurality of shared control channels (SCCHs); A SCCH transmitter for transmitting at least one SCCH frame with the paging information inserted thereto to terminals; And the paging information includes identification information of a terminal to receive a paging message. 26. The method of claim 25, The paging information further comprises at least one of the cell radio network Temporary Identity (Cell-Radio Network Temporary Identity) information used for the transmission of the paging information and the channel information for transmitting the paging message . An apparatus for receiving paging information of a terminal in a communication system using an orthogonal frequency division multiple access (OFDMA), When the current operation mode is the sleep mode, at least a predetermined time transition to the awake mode to receive at least one shared control channel (SCCH) frame allocated for the transmission of paging information from the base station With SCCH receiver, An SCCH information reader for detecting paging information from the at least one SCCH frame; A paging controller for determining whether identification information of the terminal included in the paging information is identical to identification information of the corresponding terminal, and outputting a determination result; And a shared data channel (SDCH) receiver for receiving a paging message from the base station according to the determination result. 28. The method of claim 27, The paging information receiving apparatus further comprises at least one of the cell radio network Temporary Identity (Cell-Radio Network Temporary Identity) information used for the transmission of the paging information and the channel information to which the paging message is transmitted . The method of claim 3, The paging information may further include at least one of shared data channel information, demodulation information, and channel information on which the paging message is transmitted, according to the size of identification information of the terminal. . 9. The method of claim 8, The paging information further comprises at least one of information indicating the amount of paging information to be received by the terminal corresponding to the identification information and the channel information to which the paging message is transmitted. 18. The method of claim 17, The paging information receiving apparatus further comprises at least one of shared data channel information, demodulation information, and channel information on which the paging message is transmitted, according to the size of identification information of the terminal. . 23. The method of claim 22, And the paging information further comprises at least one of information indicating an amount of paging information to be received by a terminal corresponding to the identification information and channel information on which the paging message is transmitted.

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