KR100866182B1 - Apparatus and method for transmitting data in mobile communication - Google Patents

Abstract

end. The technical field to which the invention described in the claims belongs

The present invention relates to an apparatus and method for transmitting data in a mobile communication system.

I. The technical problem to be solved by the invention

The present invention increases data transmission efficiency when multiplexing data and transmits the data, and can be applied to a 1xEV-DV system, and provides a system for performing data transmission according to quality of service (QoS).

All. Summary of Solution of the Invention

An apparatus according to the present invention is a device for multiplexing and transmitting data in a mobile communication system that can transmit two or more types of data to one user according to a quality of service, and can simultaneously transmit two or more types of user data. A radio link protocol instance for dividing and outputting information sources into a predetermined size, a quality separator for dividing and outputting data received from the radio link protocol instance according to a quality of service, and a number of the kinds of data provided to the user. A multi-quality control unit for receiving data output according to each service quality from the quality divider, adding an error correction code, encoding and outputting the data, and a source multiplexer for multiplexing and outputting the output of the multi-quality control unit. Characterized in that it comprises a modulator for modulating and outputting the output symbols of the multiplexer.

la. Important uses of the invention

Used when multiplexing data in mobile communication system.

Data transfer, multiplexing, encoder packet, data rate.

Description

Apparatus and method for transmitting data in mobile communication system {APPARATUS AND METHOD FOR TRANSMITTING DATA IN MOBILE COMMUNICATION}             

1 is a block diagram of a transmitter for multiplexing between typical users;

2 is a block diagram of a transmitter for multiplexing between user data or between users according to the present invention;

3a to 3e are simulation result graphs of the performance analysis of the scheme according to the invention,

4 is a flowchart of data transmission for obtaining a maximum multiplexing gain according to the first embodiment of the present invention;

5 is a flowchart of data transmission for obtaining a maximum multiplexing gain according to a second embodiment of the present invention;

The present invention relates to a data transmission apparatus and method in a mobile communication system, and more particularly, to an apparatus and method for multiplexing and transmitting data.

In general, technologies such as 1xEVDO and 1xEVDV of IS-2000 and 3GPP2 have been proposed to perform data services in mobile communication systems. HDR and 1XTREME have been proposed as 1XEV technologies. The mobile communication system often transmits high speed data, and in such a case, it is necessary to provide high throughput. In order to provide high throughput, the operation of each layer, such as an RLP layer, a MUX layer, and a physical layer, becomes a very important factor in a wireless protocol of a mobile communication system. In addition, in the case of transmitting high-speed data in the mobile communication system, in order to have a high gain ratio, the transmitted data must be multiplexed appropriately.

Then, we will look at a case where data is transmitted by general time division multiplexing.

1 is a block diagram of a transmitter when a TDM / TDM multiplexing scheme is used for multiplexing between users. A case in which two users are used by TDM / TDM multiplexing will be described with reference to FIG. 1.

Each user data is input to channel encoders 110, 120. In this case, the channel encoders 110 and 120 used are turbo encoders, and the code rate is 1/5. Each of the user data is encoded by the turbo encoders 110 and 120, and the encoded symbol is input to the QCTC processing units 111 and 121. The QCTC processing units 111 and 121 perform coding to improve the performance of H-ARQ, which is a retransmission scheme provided in a physical channel, and output the coding to the modulators 112 and 122. The modulators 112 and 122 perform modulation of the encoded symbol. In this case, the modulation may be performed by two users using the same modulation scheme or may be modulated by different modulation schemes. The modulated symbol as described above is multiplexed by the multiplexer 130. At this time, data of two users is multiplexed by TDM / TDM method. The multiplexed information is demultiplexed in the symbol demultiplexer 131 and processed in parallel on the I-axis Q-axis to perform Walsh coverings on the Walsh covers 132-1,..., 132 -N. Then, the Walsh chip level adder 133 sums up the Walsh chip level and is finally transmitted to the I and Q axes.

When data is transmitted by being multiplexed in the above manner, there is a problem in that the multiplexing efficiency is lowered. In addition, there is a problem that can not be simply applied to the 1xEV-DV system currently being standardized. That is, there is a problem in that data cannot be transmitted at the level of quality of service (QoS) according to each service type. Therefore, when transmitting data between different media, that is, inter-media or intra-media, that is, different data quality is provided for data of each medium, and multiplexing cannot be performed.

Accordingly, an object of the present invention is to provide a data transmission apparatus and method capable of increasing data transmission efficiency when data is multiplexed and transmitted.

Another object of the present invention is to provide an apparatus and method for transmitting data after multiplexing data by applying to a 1xEV-DV system.

Another object of the present invention is to provide an apparatus and method for multiplexing data to be transmitted in consideration of the quality of service in a 1xEV-DV system and transmitting data in accordance with transmission efficiency.

The apparatus of the present invention for achieving the above objects can be transmitted to a user by separating two or more kinds of data according to the quality of service, and for multiplexing and transmitting data in a mobile communication system that can transmit two or more types of user data at the same time An apparatus comprising: a radio link protocol instance for dividing and outputting information sources to be transmitted to a user into a predetermined size; a quality separator for dividing and outputting data received from the radio link protocol instance according to a quality of service; A multiple quality control unit configured to receive data output from the quality classifier according to the quality of service, add an error correction code, encode and output the multiple quality control unit, and multiplex outputs of the multiple quality control unit. And a modulator for modulating and outputting the output symbols of the source multiplexer.

And the source multiplexer,

Multiplexing the output of the multiple quality control unit according to the transmission rate and the number of slots determined according to the transmission rate,

The multi-quality control unit,

An error detection bit adding unit for adding an error correction code according to the data block input from the quality separator, an encoder for channel coding and outputting the output of the error detecting bit adding unit, and increasing a retransmission method of the output of the encoder. The encoder is configured to perform encoding.

An apparatus according to another embodiment of the present invention for achieving the above objects can be transmitted to a user by dividing two or more types of data according to the quality of service, the data in a mobile communication system that can transmit two or more user data at the same time An apparatus for multiplexing and transmitting, comprising: a radio link protocol instance for dividing and outputting information sources to be transmitted to a user in a predetermined size, and a quality separator for dividing and outputting data received from the radio link protocol instance according to a quality of service; At least one multi-quality control unit configured to receive data output according to the quality of service from the quality separator, add an error correction code, encode, and output the data from the quality classifier; And a user multiplexer and a modulator for modulating and outputting the output symbols of the user, the multiplexer with the output symbols from multiple quality control unit for multiplexing the output symbols from multiple quality control of another user.

And the user multiplexer,

Multiplexing the output of the multiple quality control unit according to the transmission rate and the number of slots determined according to the transmission rate,

The multi-quality control unit,                         

An error detection bit adding unit for adding an error correction code according to the data block input from the quality separator, an encoder for channel coding and outputting the output of the error detecting bit adding unit, and increasing a retransmission method of the output of the encoder. The encoder is configured to perform encoding.

The method of the present invention for achieving the above object is to transmit two or more types of data to one user according to the quality of service, and to transmit multiplexed data in a mobile communication system that can transmit two or more types of user data at the same time A method comprising: determining a transmission rate based on an amount of information of a user and a requested transmission rate, determining a length of a slot that can be transmitted according to the determined transmission rate, and when there are two or more types of data to be transmitted to the user Multiplexing the two types of data if the data stored in the high priority buffer is less than the size of the maximum data block and satisfies the size of the maximum data block with the data stored in the two or more buffers; Data into data blocks After St. modulating includes the step of sending it.

And when the amount of data stored in each buffer in which the data to be transmitted to one user is less than the size of the maximum data block is multiplexed with the data of another user, and modulates the multiplexed data into data blocks and transmits the same. Process,

If only the data stored in the buffer having the highest priority among the user's buffers more than the maximum data block size comprises the step of configuring and modulating the data block with only the data stored in the buffer and transmitting it.

A method according to another embodiment of the present invention for achieving the above objects can be transmitted to a user by dividing two or more kinds of data according to the quality of service, the data in a mobile communication system that can transmit two or more user data at the same time A method for multiplexing and transmitting, comprising: determining a transmission rate based on an amount of information of a user and a requested transmission rate, determining a length of a slot that can be transmitted according to the determined transmission rate, and data to be transmitted to the user If there is more than one type, the data stored in the high-priority buffer is less than the size of the maximum data block, and if the data stored in the two or more buffers satisfy the size of the maximum data block or more, the data may be multiplexed into the two buffers. If the length of the transmission slot increases And a process of checking the value, multiplexing the two types of data when the length of the transmission slot does not increase, and transmitting and modulating the multiplexed data into data blocks.

In addition, it is checked whether the amount of data stored in each buffer that stores data to be transmitted to one user is less than the size of the maximum data block, and if there is data to be transmitted to other users, the sum of the amounts of the data of the two users is greater than or equal to the maximum data block. And if the sum of the data amounts of the two users is greater than or equal to the maximum data block, checking whether an increase of slot occurs when the data block is composed of data of two users, and an increase of the slot occurs. If not, the method includes multiplexing the data of the two users, modulating the multiplexed data into data blocks, and transmitting the modulated data.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

The present invention proposes a structure that can provide multiplexing between multiple sources and multiplexing between multiple users at the same time, and especially in case of performing TDM / TDM multiplexing, to the size of EP (Encoder Packet) provided by the current 1xEV-DV. We propose a multiplexing scheme and a method of limiting the size of the EP finally transmitted to the physical channel in the multiplexing to increase the transmission efficiency in the forward link.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the present invention, a maximum of two users are multiplexed or a maximum of two sources are connected to one user. However, expanding the number of users or the number of sources reveals that the same applies in the manner proposed in the present invention.

2 is an internal block diagram of a transmitter for duplexing and processing information of a user according to the present invention. Hereinafter, a configuration and an operation of a transmitter for duplexing and transmitting user information according to the present invention will be described in detail with reference to FIG. 2. In addition, in the present invention, the two sources are connected to each of the two users as an example, but the proposed scheme may be applied even when the number of sources and the number of users are expanded in the structure proposed by the present invention. Therefore, FIG. 2 shows a structure in which two application sources are connected to one user and multiplex such users.

Information sources 201, which are application sources generated at the upper layer, are delivered to the data link layer 210. That is, the information sources 201 are input to the radio link protocol instance 211 of the radio link protocol layer. The radio link protocol instance 211 outputs the input information sources segmented into data of a size suitable for transmission. The radio link protocol frames segmented and output as described above are classified according to the quality of service in the quality separator 212. At this time, the quality separator 212 performs a process of transmitting to the physical layer according to the transmission order between each source. In addition, if different QoS is required between the two connected sources, a process of transmitting to the physical layer is performed according to the transmission order for each QoS. The data processed as described above is input to the physical layer 220.

The physical layer 220 may be provided with multiple quality controllers (MQCs) as many as the number output from the quality separator 212. In FIG. 2, since it is assumed that two application services, information sources, are input to one user, two multi-quality control units 221 and 222 are illustrated. Since the multiple quality control units 221 and 222 have the same structure, only the internal configuration of one multiple quality control unit 221 will be described below.

The data block (Data Block 1) 221a received from the quality separator 212 is input to the error detection bit adding unit 221b. Data blocks that can be configured at this time are shown in Table 1 below.

The 384 bits, which is the minimum unit data block (EP: Encoder Packet) shown in Table 1, are stored in the buffer of the physical layer. The size of the data block to be transmitted to the physical layer is determined according to the measured data rate (C / I) and available Walsh at the moment to be transmitted, and can be transmitted according to the determined size of the data block. The number of data blocks of each source is determined. In addition, the number of EPs that can be multiplexed in two sources is also determined.

As shown in Table 1, the data block 221a input according to the data rate and available Walsh is outputted with the error detection bit added by the error detection bit adding unit 221b. The error detection bit adder 221b may be generated by a general error detection bit adder, or may be configured by an error detection bit adder that distinguishes each user. In this way, the data to which the error detection bit is added is input to the channel encoder 221c. In the present embodiment, a turbo encoder 221c using a 1/5 coding rate as a channel encoder is illustrated. The channel encoder 221c channel-codes and outputs the input data. As described above, the channel coded symbol is output by performing coding for improving performance of H-ARQ, which is a retransmission scheme provided in the physical channel, by the QCTC processor 221d. The data output from the first multiple quality control unit 221 and the second multiple quality control unit 222 is multiplexed and output from the source multiplexer 223. In this case, the multiplexing may be performed by transmitting two sources on the same physical channel in a TDM / TDM scheme or on each physical channel in a TDM / CDM scheme. Since the selection of the multiplexing scheme is an implementation issue, the present invention will not be described separately. In the present invention, an embodiment for multiplexing between two sources will be described as follows.

The C / I transmitted from the terminal to the base station may receive 307.2 [Kbps] as shown in Table 1, and each of the 384-bit data blocks or data blocks (EPs) generated from two sources is If four or more (1536 bits or more) are stored in the buffer of the BS, the multiplexer 223 may perform multiplexing. As shown in Table 1, the data block (EP) that can be transmitted at 307.2 [Kbps] is 3072 bits / 8 slots, 1536 bits / 4 slots, 768 bits / 2 slots, and 384 bits / 1 slot. In order to transmit, the base station selects 8 slots, and reads four data blocks from a buffer in which data blocks generated from each source are stored, and performs multiplexing. At this time, the size of the final data block configured is 3072 bits, and is transmitted to the terminal with a length of 8 slots. This operation is a transmission operation when multiplexing using the TDM / TDM method. However, in the case of TDM / CDM transmission, data blocks generated from two sources are transmitted through independent channels according to transmit power and available Walsh codes without expansion of a transmission slot. As described above, when the data rate is determined by the C / I and the length of the data block that can be transmitted is determined as described above, each source is compared with the state of the buffer in which the data block generated at each source is stored. The process of determining the number of data blocks that can be read from the buffer is performed.

The data multiplexed by the source multiplexer 223 is modulated by the modem 230 and input to the user multiplexer 240. The modulator 230 may have a different modulation process applied to two sources transmitted to the same user, or the same modulation process may be applied. The modulated symbol is input to the user multiplexer 240. The user multiplexer 240 multiplexes the input data of each user and outputs the multiplexed data. The user multiplexer 240 may have various methods according to the multiplexing result of the source multiplexer 223. Table 2 shows the operation scheme for the double multiplexing.

MUX 1 (between sources) MUX 2 (between users) Max Multiplexing Source Max Multiplexing Users Option 1 O O 4 sources 2 user  MUX1 and 2 enabled Option 2 O X 2 sources 1 user  MUX 1 enabled and MUX 2 disabled (Pass) Option 3 X O 2 sources 2 user  MUX 2 enabled and MUX 1 disabled (Pass) Option 4 X X 1 source 1 user  Non Multiplexing

In Table 2, Option 1 is a structure applicable to the case where two or more users exist in a cell in an optimal channel state and two or more sources are connected to each user. You can service up to four sources. Option 2 and Option 3 are structures in which only one MUX operates, and when multiplexing for only one user is not allowed, multiplexing between users is not allowed. to be. In particular, in the case of Option 2 and 3, the applied position of the modulator 230 in FIG. 2 is changed. That is, the modulator 230 is applied after the user multiplexer 240. In both cases, different modulation schemes may be applied to two users. That is, the modem 230 is mainly applied when performing multiplexing between users. However, it can also be applied between two sources sent to the same user. The operation scheme described above is a transmission multiplexing scheme capable of guaranteeing an optimal multiplexing gain.

4 is a flowchart of data transmission during data transmission to obtain the maximum multiplexing gain according to the first embodiment of the present invention. Hereinafter, a process for obtaining a maximum multiplexing gain in data transmission in the case of applying the scheme of the present invention will be described in detail with reference to FIGS. 2 and 4. In the following description, it is assumed that the transmitter is located in the base station.

The base station checks the states of the first and second buffers among the buffers allocated to one user in step 400. That is, how many data blocks EP are stored in the buffer generated at the source. In the embodiment of the present invention, since two types of data services are multiplexed to one user as an example, the buffers also include a first buffer and a second buffer. If more than one data service is multiplexed to a user, the buffer is provided according to the number of multiplexes.

In step 410, the base station determines a data rate and the number of data blocks (EPs) that can be provided based on the C / I transmitted from the terminal. When the number of data blocks (EPs) transmitted in this way is determined, the length of the slot is determined. It can be determined one of 1, 2, 4, and 8 slot lengths as shown in Table 1 above.

When this process is performed, the size of the EP and the length of the transmission slot to be finally transmitted to the physical channel can be determined. That is, the base station proceeds to step 420 to compare the size of the data block (EP) existing in the first buffer with the size of the maximum transmission data block (EP) transmitted on the physical channel. As a result of the comparison, if the amount of data stored in the first buffer is greater than or equal to the size of the maximum data block that can be transmitted, the process proceeds to step 425. In step 425, the base station configures the data block stored in the first buffer as a data block without multiplexing, performs a modulation process in step 430, and transmits the data block to the terminal in step 435.

In contrast, when the amount of data stored in the first buffer is less than the size of the maximum data block, the process proceeds to step 440. In step 440, the base station determines whether the size of the maximum data block that can be currently provided is satisfied in consideration of the data block EP stored in the second buffer. In step 440, if the data is stored in a size larger than the maximum data block using the data stored in the first buffer and the second buffer, the base station proceeds to step 445 to perform multiplexing between sources. The multiplexing between the sources refers to a process of multiplexing each of the multiple quality controllers 221 and 222 and multiplexing the source multiplexer 223 as shown in FIG. 2. Therefore, the base station performs multiplexing between the sources in step 445 and configures the final data block in step 425 to step 435, modulates the data, and transmits it.

On the other hand, if the test result of step 440 does not satisfy the maximum data block size even though multiplexing between two sources is performed, the base station proceeds to step 450. In step 450, the base station performs a process for performing multiplexing among multiple users. That is, data multiplexing between different users is performed. Accordingly, the base station checks whether there is a user in the cell that can be multiplexed in step 450 for multiplexing data between different users. If there is no user to multiplex as a result of the check, steps 425 to 435 are performed in consideration of only multiplexing between previously multiplexed sources. In this case, the maximum data block size that can be transmitted is not satisfied.

However, if the user to be multiplexed exists in the cell in step 450, the base station proceeds to step 455 to determine whether the sum of the data block sizes between user 1 and user 2 satisfies the maximum transmittable data block size. In this case, even if the size of the data block that is multiplexed between users does not satisfy the maximum size of the data block that can be transmitted, the data block is transmitted as it is. That is, after the process 460, the transmission process as described above is performed. In FIG. 4, the source stored in the first buffer has a higher priority than the second buffer and has a transmission priority in transmission. In addition, in FIG. 4, only the case of multiplexing between the two users is considered. In step 455, the multiplexing between the two users is performed even when the data amount of the users does not satisfy the maximum data block size. However, if three or more users are multiplexed, this may be done by checking whether the next user data exists.

3A to 3E are graphs of simulation results of the performance analysis of the scheme according to the present invention. In the above simulation, one source is connected to two sources of VoIP and WEB traffic. First, the results of performance analysis of the scheme according to the present invention will be described with reference to FIGS. 3A to 3E.

In each of the graphs of FIGS. 3A to 3E, "With MUX" is a graph of simulation results for an optimal multiplexing scheme. That is, the result of multiplexing to the maximum allowable range between two users or two sources. "W / O Mux" is a simulation result of performance when multiplexing methods such as TDM / TDM or TDM / CDM are not applied. The filling efficiency of FIG. 3A shows the rate of multiplexing, and it can be seen that the maximum multiplexing rate is obtained by applying the present invention to the maximum multiplexing rate. In addition, it can be seen that the cell gain of FIG. 3B also indicates the maximum performance. However, as shown in Figs. 3c to 3e, it can be seen that the performance of the proposed optimal multiplexing scheme is inferior to other methods in terms of average queuing delay time and web service delay time. In order to compensate for the performance degradation of the delay time, the second embodiment of the present invention is applied. Another time multiplexing scheme proposed by the present invention is a time slot limitation scheme, which is indicated as "NewMUX" in the graph of FIG. 3.

FIG. 5 is a flowchart of multiplexing and transmitting data of one user data between data services and user data according to a second embodiment of the present invention. Hereinafter, a multiplexing process will be described in detail when multiplexing and transmitting data between users or between data of a user according to the second embodiment of the present invention with reference to FIG. 5. 5 illustrates a process of performing multiplexing within a range that does not allow an increase in slot length that may be increased when multiplexing is performed.

The base station checks the states of the first and second buffers among the buffers allocated to one user in step 500. That is, check how many data blocks (EP) are stored in the buffer generated from the source. In the embodiment of the present invention, since two types of data services are multiplexed to one user as an example, the buffers also include a first buffer and a second buffer. If more than one data service is multiplexed to a user, the buffer is provided according to the number of multiplexes.

In step 510, the base station determines a data rate and the number of data blocks (EPs) that can be provided based on the C / I transmitted from the terminal. When the number of data blocks (EPs) transmitted in this way is determined, the length of the slot is determined. It can be determined one of 1, 2, 4, and 8 slot lengths as shown in Table 1 above.

When this process is performed, the size of the EP and the length of the transmission slot to be finally transmitted to the physical channel can be determined. That is, the base station proceeds to step 520 and compares the size of the data block (EP) existing in the first buffer with the size of the maximum transmission data block (EP) transmitted on the physical channel. As a result of the comparison, if the amount of data stored in the first buffer is greater than or equal to the size of the maximum data block that can be transmitted, the process proceeds to step 525. In step 525, the base station configures the data block stored in the first buffer as a data block without multiplexing, performs a modulation process in step 530, and transmits the data block to the terminal in step 535. Steps 500 to 535 described above are the same as steps 400 to 435 of FIG. 4 described above.

In contrast, when the base station proceeds from step 520 to step 540, it is checked whether the amount of data stored in the first buffer and the second buffer is equal to or larger than the maximum data block size. If the result of the check is greater than or equal to the size of the maximum data block, the process proceeds to step 545; otherwise, the process proceeds to step 555.

In step 545, when the base station configures a data block (EP) using data stored in the two buffers, the base station determines whether the length of the slot increases when the source of the first buffer is transmitted. If the length of the slot is increased when multiplexing the data stored in the two buffers, the process proceeds to step 525. That is, the process of transmitting only the data block EP of the first buffer without performing multiplexing between the sources is performed. However, if the slot length does not increase, the base station proceeds to step 550 to perform multiplexing between the two sources to configure and transmit the final data block (EP).

This will be described as an example. If the data rate is 614.4 [Kbps] in Table 1 and 768 bits are stored in the first buffer and the second buffer, the process proceeds to step 550. That is, when the maximum multiplexing is allowed as shown in FIG. 4, a process of sending a data block of 1536 bits, which is the length of the multiplexing of two slots provided in 614.4 [Kbps], to two slots is performed. Therefore, when transmitting the data block (EP) of the first buffer, the length of one slot is required, but when performing multiplexing, two slots are required, so that the length of a transmission slot is increased and the efficiency of multiplexing is increased. However, as shown in FIG. 5, when the slot length is limited, the slot is increased as in step 545, and thus multiplexing is not performed, and only the data block EP of the first buffer is transmitted. In addition, 384 bits are stored in the first buffer and the second buffer at the same data rate, and are transmitted at 768 bits / 1 slot, which is the size of a data block (EP) that can be supported at the same data rate. Can be. That is, the operation of FIG. 5 allows multiplexing only in this case. Alternatively, if the data rate is 1228.8 [Kbps] and 2304 bits are stored in the first buffer and 768 bits are stored in the second buffer, 3072 bits may be transmitted in a two slot time. In this case, the multiplexing of data of the user is permitted in FIG. 5.

The above-described processes may also be provided in FIG. 4. That is, the multiplexing is performed only in some cases of the multiplexing provided in FIG. 4. Therefore, the multiplexing is naturally performed in FIG. 4. Therefore, the time slot limited multiplexing proposed in FIG. 5 performs only multiplexing within a range without increasing the time slot in the maximum multiplexing method.

In addition, when proceeding from step 540 to step 550, the base station checks whether there is a user to transmit data. That is, it checks whether a user with data to be multiplexed exists. If there is a user with the data to be multiplexed as a result of the check, the process proceeds to step 560, and if not, step 545 is performed. In step 560, the base station proceeds to step 525 when the sum of the data stored in the first and second buffers of the first selected user and the data of the next user is equal to or greater than the maximum data block size. Proceed to step 565.

In step 565, the base station determines whether the length of the slot for transmitting the size of the data block increases when the data amounts of the two users are added and transmitted. If the length of the slot increases, the process proceeds to step 525, otherwise proceeds to step 570 to perform data multiplexing between users. In other words, the data is multiplexed between users.

In the detailed description of the present invention described above, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the scope of the following claims, but also by the equivalents of the claims.

As described above, when the present invention is used, multiplexing may be provided between sources, between users, or between sources and users. In addition, the gain of data multiplexing is guaranteed, and there is an advantage of increasing transmission efficiency and cell gain.

Claims (11)

An apparatus for multiplexing and transmitting data in a mobile communication system that can transmit two or more kinds of data to one user according to a quality of service, and can transmit two or more types of user data at the same time. A radio link protocol instance for dividing and outputting information sources to be transmitted to a user in a predetermined size; A quality separator configured to output data received from the radio link protocol instance according to a quality of service; A multi-quality control unit configured to receive the data which is composed of the number of types of data provided to the user and is divided according to the quality of service from the quality separator, adds an error correction code, and encodes the output; A source multiplexer for multiplexing and outputting the output of the multi-quality control unit; And a modulator for modulating and outputting output symbols of the source multiplexer. The method of claim 1, wherein the source multiplexer, And the output of the multiple quality control unit is multiplexed according to the transmission rate and the number of slots determined according to the transmission rate. The method of claim 1 or 2, wherein the multi-quality control unit, An error detection bit adding unit which adds the error correction code according to the data block inputted from the quality separator; An encoder for channel coding and outputting the error detection bit coder; And an encoder for encoding the output of the encoder to increase a retransmission scheme. An apparatus for multiplexing and transmitting data in a mobile communication system that can transmit two or more kinds of data to one user according to a quality of service, and can transmit two or more types of user data at the same time. A radio link protocol instance for dividing and outputting information sources to be transmitted to a user in a predetermined size; A quality separator configured to output data received from the radio link protocol instance according to a quality of service; At least one multi-quality control unit configured to receive data output from the quality classifier according to the quality of service from the quality classifier, add an error correction code, encode the code, and output the encoded data; A user multiplexer for multiplexing symbols output from the multiple quality control unit and symbols output from the multiple quality control unit of another user; And a modulator for modulating and outputting output symbols of the user multiplexer. The method of claim 4, wherein the user multiplexer, And the output of the multiple quality control unit is multiplexed according to the transmission rate and the number of slots determined according to the transmission rate. The method of claim 4 or 5, wherein the multiple quality control unit, An error detection bit adding unit which adds the error correction code according to the data block inputted from the quality separator; An encoder which channel-codes and outputs the output of the error detection bit adding unit; And an encoder for encoding the output of the encoder to increase a retransmission scheme. In a method for multiplexing and transmitting data in a mobile communication system that can transmit two or more types of data to one user according to the quality of service, and can transmit two or more types of user data at the same time, Determining the transmission rate and the slot length based on the amount of information of the user and the requested transmission rate; When two or more types of data to be transmitted to the user are stored in a buffer having a higher priority than the size of the maximum data block, and the size of the data stored in the two or more buffers is smaller than the size of the maximum data block. Multiplexing them, And modulating the multiplexed data into data blocks and transmitting the modulated data. The method of claim 7, wherein Multiplexing with the data of another user when the amount of data stored in each buffer that stores data to be transmitted to one user is less than the maximum data block size; And transmitting the multiplexed data into data blocks, modulating the multiplexed data, and transmitting the modulated data. The method according to claim 7 or 8, The method further comprises the step of transmitting a data block by configuring and modulating the data block only with the data stored in the buffer when only the data stored in the buffer having the highest priority among the user's buffers is larger than the maximum data block size. How to transfer data from the system. In a method for multiplexing and transmitting data in a mobile communication system that can transmit two or more types of data to one user according to the quality of service, and can transmit two or more types of user data at the same time, Determining the transmission rate based on the amount of information and the requested transmission rate of the user; Determining a length of a slot that can be transmitted according to the determined transmission rate; When two or more types of data to be transmitted to the user are stored in a buffer having a higher priority than the size of the maximum data block, and the data stored in the two or more buffers satisfy the size of the maximum data block or more. Checking whether the length of a transmission slot increases when data is multiplexed using Multiplexing the two types of data when the length of the transmission slot does not increase as a result of the inspection; And modulating the multiplexed data into data blocks and transmitting the modulated data. The method of claim 10, If the amount of data stored in each buffer that stores data to be transmitted to one user is less than the size of the maximum data block, and if there is data to be transmitted to other users, it is checked whether the sum of the amounts of data of the two users is greater than or equal to the maximum data block. Process, Checking whether an increase in slot occurs when a data block is composed of data of two users when the sum of the data amounts of the two users is greater than or equal to the maximum data block; Multiplexing the data of the two users when the increase of the slot does not occur as a result of the inspection; And transmitting the multiplexed data into data blocks, modulating the multiplexed data, and transmitting the modulated data.

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