KR20060091559A - Method for transmitting and receiving of non-schedulted data on uplink in mobile telecommunications system - Google Patents

Abstract

The present invention relates to a method for transmitting and receiving unscheduled data in a mobile communication system supporting a reverse packet data service. The terminal allocates one or more of the entire HARQ processes for the transmission of non-scheduled data and allocates the remaining processes for the other data. If the channel state is not good and the transmission of the non-scheduled data is not sufficient for the allocated processes alone, the terminal allocates one or more additional processes in addition to the allocated processes. The base station does not perform scheduling for the processes allocated for the non-scheduled data, and performs resource allocation to the terminal only for the remaining processes other than the allocated processes.

E-DCH, GBR, HARQ PROCESS

Description

METHODS FOR TRANSMITTING AND RECEIVING OF NON-SCHEDULTED DATA ON UPLINK IN MOBILE TELECOMMUNICATIONS SYSTEM}

1 is a diagram illustrating a radio access network (UTRAN) of a typical UMTS system.

2 shows a hierarchical interface between a terminal and a radio network controller (RNC).

3 illustrates the transmission of data over an E-DCH in a typical radio link.

4 is a diagram illustrating a procedure of transmitting and receiving data through a typical E-DCH.

5 illustrates an initial signaling procedure for transmitting GBR data on an E-DCH according to a preferred embodiment of the present invention.

6 is a timing diagram in which a terminal transmits data for each HARQ process according to an embodiment of the present invention.

7 is a timing diagram in which a terminal transmits data for each HARQ process in a poor channel environment according to an embodiment of the present invention.

8 is a timing diagram in which a terminal transmits data for each HARQ process in a very poor channel environment according to a preferred embodiment of the present invention.

9 is a flowchart illustrating an operation procedure of a terminal according to an exemplary embodiment of the present invention.

10 is a flowchart illustrating an operation procedure of a base station according to a preferred embodiment of the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to asynchronous wideband code division multiple access (WCDMA) communications, and more particularly to a method for transmitting and receiving non-scheduled data without scheduling assignment of a base station.

The Universal Mobile Telecommunication Service (UMTS) system, a third-generation mobile communications system based on the European System of Global Communications for GSM (GSM) and using WCDMA, is available to mobile or computer users anywhere in the world. It provides a consistent service for transmitting packet-based text, digitized voice or video and multimedia data at speeds of 2 Mbps and higher. UMTS uses the concept of virtual access, which is a packet-switched connection that uses a packet protocol such as Internet Protocol (IP), and can always be connected to any other end in the network.

FIG. 1 is a block diagram illustrating a UMTS Terrestrial Radio Access Network (hereinafter referred to as "UTRAN") of a typical UMTS system.

Referring to FIG. 1, the UTRAN 12 is composed of radio network controllers (hereinafter referred to as " RNC ") 16a, 16b and base stations Node Bs 18a, 18b, 18c, and 18d. Then, the user equipment (User Equipment) 20 is connected to the core network (Core Network) 10. There may be a plurality of cells below the base stations 18a, 18b, 18c, 18d, and each of the RNCs 16a, 16b controls the corresponding base stations 18a, 18b, 18c, 18d, Each base station 18a, 18b, 18c, 18d controls the corresponding lower cells. The base stations and cells controlled by one RNC are collectively referred to as a Radio Network Subsystem (hereinafter referred to as "RNS") 14a and 14b.

The RNC allocates or manages radio resources of base stations it controls. The base station serves to provide actual radio resources. Radio resources are configured for each cell, and radio resources provided by a base station mean radio resources of cells managed by the base station. The terminal may configure a radio channel and perform communication using radio resources provided by a specific cell of a specific base station. From the standpoint of the terminal, the distinction between the base station and the cell is meaningless, and since only the physical layer configured for each cell is recognized, the base station and the cell will be referred to as the same meaning.

The interface between the terminal and the UTRAN is called a Uu interface, and a detailed hierarchical structure is shown in FIG.

2 is a diagram illustrating a hierarchical interface between a terminal and a UTRAN. The Uu interface is divided into a control plane used to exchange control signals between the terminal and the RNC and a user plane used to transmit actual data.

The signal 30 of the control plane is referred to as a radio resource control (RRC) layer 32, a radio link control (RLC) layer 40, a media access control (MAC) layer 42, and a physical (hereinafter, referred to as "PHY") signal. Data 32 of the user plane is processed by the PDCP (Packet Data Control Protocol) layer 36, BMC (Broadcast / Multicast Control) layer 38, RLC layer 40, and MAC. Processing is carried out via the layer 42 and the physical layer 44. Among the layers shown here, the physical layer 44 is located in each cell, and the MAC layer 42 to the RRC layer 34 are located in the RNC.

The physical layer 44 is a layer that provides an information transmission service using a radio transfer technology, and corresponds to a first layer of an Open Systems Interconnection (OSI) model. The physical layer 44 and the MAC layer 42 are connected by transport channels, and transport channels are defined by the manner in which specific data is processed in the physical layer.

The MAC layer 42 and the RLC layer 40 are connected via logical channels. The MAC layer 42 delivers the data delivered by the RLC layer 40 through the logical channel to the physical layer through the appropriate transport channel, and the data delivered by the physical layer 44 through the transport channel through the appropriate logical channel. It serves to convey to 40. In addition, by inserting additional information into the data received through the logical channel or the transmission channel or by analyzing the inserted additional information, it takes appropriate action and controls the random access operation. The portion related to user plane 30 in this MAC layer 42 is called MAC-d, and the portion related to control plane 32 is called MAC-c.

The RLC layer 40 is responsible for establishing and releasing logical channels. The RLC layer 40 may operate in one of three operation modes, namely, an acknowledgment mode (AM), an unacknowledged mode (UM), and a transparent mode (TM), and provide different functions for each operation mode. In general, the RLC layer 40 is responsible for dividing or assembling a service data unit (hereinafter, referred to as an "SDU") from an upper layer into an appropriate size and an error correction function.

The PDCP layer 36 is located above the RLC layer 40 in the user plane 32. The PDCP layer 36 compresses and restores headers of data transmitted in the form of IP packets, and provides RNC services to specific terminals with mobility. It is responsible for the lossless transfer of data, etc. under the situation that is changed.

The characteristics of a transport channel connecting the physical layer 44 and upper layers include physical layer processing such as convolutional channel encoding, interleaving, and service-specific rate matching. It is determined by the TF (Transport Format).

In particular, in the UMTS system, an enhanced uplink dedicated channel (Enhanced) is improved compared to a typical dedicated channel (DCH) hereinafter, to further improve the performance of packet transmission in uplink (UL) communication from the terminal to the base station. Uplink Dedicated Channel (hereinafter referred to as “E-DCH”) is used to support more stable high-speed data transmission, and Hybrid Automatic Retransmission Request (HARQ) and base station control scheduling (Node B). It also supports technologies such as controlled scheduling.

3 is a diagram illustrating the transmission of data over the E-DCH in a typical radio link.

Referring to FIG. 3, reference numeral 100 denotes a base station supporting the E-DCH and 101 to 104 are terminals for transmitting the E-DCH. The base station 100 determines the channel status of the terminals 101 to 104 using the E-DCH and schedules data transmission of each terminal. The scheduling allocates a low data rate to a terminal far from the base station and a high data rate to a near terminal while preventing the measured noise rise of the base station from exceeding a target noise increase value in order to improve the performance of the entire system. Do this by assigning.

4 is a diagram illustrating a procedure of transmitting and receiving data through a typical E-DCH.

Referring to FIG. 4, in step 202, the base station 200 and the terminal 201 configure an E-DCH. Step 202 includes a process of delivering messages on a dedicated transport channel. When the E-DCH is configured, the terminal 201 informs the base station 200 of the terminal status information in step 204. The terminal state information may be terminal transmission power information indicating reverse channel information, extra power information that can be transmitted by the terminal, and an amount of data to be transmitted in a buffer of the terminal.

In step 206, the base station 200 that receives the scheduling information from the plurality of terminals in communication, monitors the terminal state information of the plurality of terminals in order to schedule data transmission of each terminal. In step 208, the base station 200 determines that the reverse packet transmission is allowed to the terminal 201, and transmits scheduling assignment information to the terminal 201. The scheduling allocation information includes an allowed data rate and an allowable timing.

The terminal 201 determines the transmission format (TF) of the E-DCH to be transmitted in the reverse direction by using the scheduling assignment information in step 210, and simultaneously transmits reverse (UL) packet data through the E-DCH in step 212. TF information, that is, transport format resource indicator (TFRI) is transmitted to the base station 200. In step 216, the base station 200 determines whether there is an error in the TF information and the packet data. In step 218, the base station 200 transmits a negative acknowledgment (NACK: Non-Acknowledge) as HARQ information when any of the determination results in an error. Send to 201.

When the ACK is transmitted, the terminal 201 sends new user data through the E-DCH, but when the NACK is transmitted, the terminal 201 retransmits packet data having the same contents through the E-DCH.

In the transmission of the E-DCH, a base station generally adjusts a data rate to be transmitted to a terminal through resource allocation by scheduling. On the other hand, data having a special characteristic can be transmitted by using the E-DCH terminal arbitrarily irrespective of the resource allocation of the base station, this data is referred to as non-scheduled (Non-scheduled) data. Non-scheduled data generally includes bursty data that is sensitive to transmission delays or difficult to predict, or data that is constantly generated while maintaining a predetermined data rate. Specific types of data having such a property include scheduling request information for informing a base station of a signaling radio bearer (SRB) including signaling information, transmission power information of a terminal, or status information of a buffer. Alternatively, there may be a guaranteed bit rate service (GBR) that must guarantee a predetermined data rate.

The transmission of the non-scheduled data has a property of violating the base station control scheduling, which is one of the large properties of the E-DCH. That is, the base station scheduling element may have a very low gain depending on the nature of the non-scheduled data. Therefore, great care must be taken in handling non-scheduled data. Therefore, there is a need for a method of transmitting unscheduled data through the E-DCH while maintaining the scheduling gain of the base station to the maximum.

Accordingly, the present invention, which was devised to solve the problems of the prior art operating as described above, provides a method for transmitting and receiving non-scheduled data using an enhanced reverse dedicated physical channel in an asynchronous WCDMA communication system.

The present invention provides a method for a terminal to transmit non-scheduled data without interrupting transmission of scheduled data as much as possible.

The present invention provides a method for the base station to maintain the scheduling gain as much as possible while receiving unscheduled data.

Hereinafter, the operating principle of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed descriptions of well-known functions or configurations will be omitted if it is determined that the detailed description of the present invention may unnecessarily obscure the subject matter of the present invention. Terms to be described later are terms defined in consideration of functions in the present invention, and may be changed according to intentions or customs of users or operators. Therefore, the definition should be made based on the contents throughout the specification.

Non-scheduled data may refer to all data that takes the nature of non-scheduled, and may also refer to only data related to one service among non-scheduled data such as GBR. The following description will focus on the transmission of non-scheduled serviced GBR data that is more consistent with what the present invention seeks. Here, GBR transmission should be understood as representing non-scheduled transmission, and non-scheduled transmission transmission other than GBR. It can also be used effectively.

As described above, GBR data is data that should allow transmission while guaranteeing a predetermined data rate. Conversational class data such as a voice call or a real-time video call may be regarded as representative GBR data. Since the GBR data is continuously generated in the buffer of the terminal in real time every time, the GBR data should be transmitted quickly and is very sensitive to transmission delay as it is used for real time communication. Therefore, it is very advantageous to transmit using the non-scheduling method rather than waiting for the scheduling allocation of the base station.

The main feature of the present invention to be described later is that the terminal transmits the GBR data limited to a specific HARQ process. The UE and the base station perform a stop / wait HARQ operation in the transmission of the E-DCH. In this case, the UE and the base station perform HARQ transmission in parallel based on a predetermined number of processes. The preferred embodiment of the present invention distinguishes GBR data from non-GBR data (non-GBR data), and transmits only GBR data that does not need to receive a scheduling assignment from a base station in a preset HARQ process among all HARQ processes of a terminal. The non-GBR data is transmitted to the remaining processes other than the process set for the GBR among all HARQ processes.

First, the terminal should set the transmission and reception of the GBR data using the E-DCH through communication with the RNC. 5 illustrates an initial signaling procedure for transmitting GBR data through an E-DCH according to a preferred embodiment of the present invention.

Referring to FIG. 5, the terminal 501 is transmitting and receiving an E-DCH with the base station 502, and the terminal 501 is controlled by the RNC 503. In step 504, the use of GBR is established between the terminal 501 and the RNC 503 using an RRC message. The information transmission process 504 through the RRC message includes the operation of requesting the RNC 503 to use the GBR transmission because there is data that the terminal 501 needs GBR, and the RNC 503 also uses E. It includes an operation of transmitting information required by the terminal 501 to allow GBR transmission using the DCH and to transmit GBR data. Information related to GBR transmission that the RNC 503 delivers to the terminal 501 may include logical channel configuration information and reference process information for the GBR.

In step 505, the RNC 503 receives the NBAP (information related to GBR transmission of the terminal 501) so that the base station 502 correctly receives and uses the GBR data transmitted by the terminal 501. Node-B Application Part) to the base station 502 through signaling. Information related to GBR transmission that the RNC 503 delivers to the base station 502 may include logical channel information and reference process information for the GBR. The base station 502 then sets up processes corresponding to the HARQ processes of the terminal 501.

The reference process information described with reference to FIG. 5 refers to a process configured to allow the terminal to transmit GBR data. The reference process information means one or a plurality of processes among HARQ processes of the terminal. In consideration of the nature of the GBR data to be transmitted by the UE, the RNC 503 selects at least one process required from all HARQ processes as the reference process and includes the information related to the GBR transmission to the base station 502. The terminal 501 is informed.

Various methods may be conceived as a method in which the above-described RNC informs the terminal and the base station of the reference process information. The first method is to assign a predetermined number to all N HARQ processes, and to inform the bitmap whether or not to use GBR among the numbers by using N bits of information. Second, after assigning a predetermined number to all N HARQ processes, the method informs the starting process number of the reference process and the number of reference processes. If it is not possible to assign a number for each process, it is also possible to find a reference process for GBR by selecting the number of the starting process and the last process from 0 to (N-1) and replacing it in Equation 1 below.

The CFN is a connection frame number of the WCDMA system, and a system frame number (hereinafter referred to as SFN) may be used instead of the CFN. In addition, the Num _{sub_frame} is an integer having a range from 0 to 4 as a current subframe number. From the CFN having a y value of 0 by substituting the starting process number in x in Equation 1 and the process corresponding to the current subframe number Num _{sub_frame} , the last process number in x in Equation 1 above. By substituting, the CFN and the process corresponding to the current subframe number (Num _{sub_frame} ), which makes y value 0, become the reference processes for the GBR.

Hereinafter, the operation of the terminal according to the preferred embodiment of the present invention. First, as described with reference to FIG. 5, the terminal knows reference process information to which GBR data should be transmitted. Therefore, the terminal transmits GBR data using only a predetermined reference process.

FIG. 6 is a diagram illustrating a timing at which a terminal transmits data for each HARQ process according to a preferred embodiment of the present invention. Herein, it is assumed that the terminal uses a total of seven HARQ processes for the E-DCH.

Referring to FIG. 6, the RNC GBRs two processes # 0, # 1 (610, 611) shaded from among the seven processes 610, 611, 612, 613, 614, 615, and 616 to the terminal. Set for data transmission. When all seven processes are used, the same seven processes are used again and again. Of the next seven processes, two identical processes # 0, # 1 (620, 621) again transmit GBR data. do. In the reference process, only GBR data can be transmitted. On the other hand, processes other than the reference process 612, 613, 714, 615, 616, and 622 may transmit non-GBR data.

If only two of the seven processes 610, 611, 612, 613, 614, 615, and 616 transmit the GBR data by 600 bits for each process, only two processes 610, 611, or 620, 621 should be guaranteed. Assume that a bit rate can be obtained. That is, assume a situation in which all seven HARQ processes 610 to 616 need to transmit 1200 bits of GBR data. The assumption is made when the available power margin 601 of the terminal is larger than the amount of power required to transmit 600 bits in one process.

In FIG. 6, the transmission of GBR data using only the two reference processes 610, 611, 620, and 621 is performed because the power margin 601 is larger than the amount of power 630 required to transmit 600 bits to one process. That's enough. However, when the power margin of the terminal becomes smaller than the amount of power required to transmit 600 bits in one process, the terminal cannot transmit 600 bits in one process, and thus the assumption cannot be made. In other words, when the channel is bad and the data is transmitted only in the reference process defined by the RNC, a situation arises in which the GBR does not support the data rate required.

7 is a timing diagram illustrating an operation of a terminal when the above-described problem occurs.

Referring to FIG. 7, two processes # 0, # 1 710 and 711 are designated as reference processes among the total seven processes 710, 711, 712, 713, 714, 715, and 716. As the channel state of the terminal becomes worse, the power margin 701 becomes smaller than the amount of power 730 required to support the GBR using only the reference processes 710 and 711 determined by the RNC. As a result, only a maximum of 400 bits are possible per process. In order to support the GBR service, it is necessary to transmit 600 bits of data per one process in two reference processes 710 and 711, but the operation becomes difficult in the current channel situation.

Accordingly, the terminal additionally uses one process # 2 712 for GBR data transmission in addition to the designated reference processes 710 and 711. That is, 400 bits are transmitted to the two reference processes 710 and 711 and 400 bits are transmitted to the additional process # 2 712. In this case, the number of processes for transmitting GBR data is increased to three, but the total processes 710 to 716 can transmit a total of 1200 bits to support the data rate required by the GBR data.

As described above, when the UE adds another process 712 in addition to the reference processes 710 and 711 to transmit the GBR data, the additional process 712 ignores the resource allocation according to the scheduling of the base station and GBR data. Send it. Four processes 713, 714, 715, and 716 other than the three processes 710, 711, and 712 perform transmission of non-GBR data according to resource allocation of the base station. When the channel environment is not improved, the same processes # 0 to # 2 720, 721, and 722 perform transmission of GBR data even in the next process operation cycle.

FIG. 8 illustrates a case where a channel state of a terminal becomes worse than that of FIG. 7.

Referring to FIG. 8, two processes # 0, # 1 710 and 711 are designated as reference processes among the seven processes 810, 811, 812, 813, 814, 815, and 816. Here, the power margin 801 becomes smaller, making it difficult for one process to transmit 400 bits. Then, the terminal adds two processes 812 and 813 in addition to the two reference processes 810 and 812, and transmits 300 bits per one process. In total, seven processes 810 to 816 can transmit 1200 bits, thereby supporting the data rate required by the GBR data.

Like the reference processes 810 and 811, the additional processes 812 and 813 ignore the resource allocation according to the scheduling of the base station and transmit GBR data. Three processes 814, 815, and 816 other than the four processes 810, 811, 812, and 813 perform non-GBR data transmission according to the resource allocation of the base station. Similarly, when the channel environment is not improved, the same processes # 0 to # 3 (820, 821, 822, etc.) perform the transmission of GBR data in the next process operation cycle.

6, 7, and 8 summarized, the terminal transmits the GBR data limited to the reference processes defined by the RNC, and transmits the non-GBR data limited to the processes other than the reference processes. However, if the UE's channel condition worsens and only transmitting the GBR data only in the reference processes cannot support the required data rate of the GBR, an appropriate number of processes are additionally allocated to the GBR data transmission, and the remaining processes are non-GBR. Assign to the transfer.

9 is a flowchart illustrating an operation procedure of a terminal according to an embodiment of the present invention.

9, in step 901, the E-DCH is configured, and in step 902, GBR transmission is performed according to communication between the UE and the RNC. In step 903, the UE receives the reference process information necessary for GBR transmission from the RNC to identify the reference processes designated by the RNC, and in step 904, transmits the GBR to the reference processes according to the reference process information. Set up processes for In step 905, the UE determines whether a power margin is sufficient to transmit GBR data to currently set GBR processes. If it is not sufficient, the process 906 sets the additional process to be a GBR process, increasing the number of GBR processes by one and returning to process 905.

If it is determined in step 905 that the power margin is sufficient to transmit the GBR data to the currently set GBR processes, the terminal correlates to resource allocation of the base station using the currently set GBR processes in step 907. GBR data, that is, non-scheduled data, is transmitted without any transmission. In step 908, the UE transmits non-GBR data, that is, scheduling data, using the remaining processes other than the GBR processes among the entire processes. In this case, the remaining processes transmit non-GBR data by an amount corresponding to the resource allocation of the base station.

In step 906, the terminal may use various methods as a method for adding a GBR process. In the first method, in step 903, the RNC can predefine processes to be added if the reference processes alone are not sufficient to transmit the GBR data. Alternatively, the terminal may add one or more processes arbitrarily among processes other than the reference processes. Alternatively, the terminal may sequentially add subsequent processes as GBR processes to the reference processes defined by the RNC.

10 is a flowchart illustrating a scheduling operation of a base station according to an embodiment of the present invention. The base station performs scheduling for each terminal for the transmission of data other than GBR. The base station can increase the gain in scheduling only when the base station knows information about which process the transmission of the GBR data occurs.

Referring to FIG. 10, in step 1001, reception of an E-DCH is set according to control of a base station operating RNC. In step 1002, the base station configures the reception of the GBR for the terminal. In step 1003, the base station receives the reference process information that the terminal uses for GBR transmission from the RNC and identifies the reference processes designated by the RNC.

In step 1004, the base station determines whether each process is used to transmit the GBR. If the corresponding process matches the reference process set by the RNC, the base station determines that the process is used to transmit the GBR. In this case, since the GBR data may be included according to the channel state of the terminal even if the process is not the reference process, the base station receives the information received in the process using information included in the header of the data received through the process from the terminal. Determines whether the data is GBR data. In this case, a data description identifier (DDI) or the like included in the header of the data indicating whether the data is GBR data may be used. If the data received in the process is GBR data, the process is determined to be a GBR process.

If it is determined in step 1004 that the process is a GBR process, in step 1005 the base station reserves an amount of backward resources, i. Proceed to 1007). On the other hand, if it is determined in step 1004 that the process is not a GBR process, the process proceeds directly to step 1007 without reservation of resources. In step 1007, the base station performs scheduling for all processes to determine a scheduling grant and transmits the determined scheduling grant to the terminal. In this case, the base station performs scheduling in consideration of the reserved resource for the processes for the non-scheduled data transmission, and transmits a scheduling grant only for the non-GBR process without transmitting a scheduling grant for the GBR process. Control backward transmission.

The method of the present invention described above may be somewhat specific, but is not limited to the above description, and various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the method described above, but should be defined not only by the scope of the following claims, but also by those equivalent to the scope of the claims.

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

In the present invention, the terminal transmits non-scheduled data using a predetermined reference process, and transmits non-scheduled data in a process other than the reference process according to a channel condition. The scheduling data is transmitted using processes other than the non-scheduling process. This invention provides a platform for efficiently scheduling the base station by separating the transmission of the non-scheduled data and the transmission of the scheduling data into precise processes. In addition, the base station determines a process in which the non-scheduled data is transmitted based on the transmission data of the terminal, and the process performs only resource reservation without performing resource allocation to the terminal, whereas other processes allocate resources. Do this.

Claims (10)

In the non-scheduled data transmission method of the reverse link in a mobile communication system, Establishing a plurality of automatic retransmission request (HARQ) processes for reverse packet transmission, Allocating processes among the plurality of processes for non-scheduled data transmission of a reverse link; Transmitting non-scheduled data regardless of resource allocation according to scheduling of the base station through the allocated processes; And transmitting scheduling data according to resource allocation of the base station through unallocated ones of the plurality of processes. The method of claim 1, wherein the assigning process comprises: Receiving information related to the transmission of the non-scheduled data from a radio network controller (RNC) that controls the reverse packet transmission; And allocating indicated reference processes to processes for the non-scheduled data transmission in accordance with the information related to the transmission of the non-scheduled data. The method of claim 2, wherein the assigning process comprises: If the reference processes alone are not sufficient to transmit the non-scheduled data, allocating a predetermined number of additional processes of the plurality of processes as processes for the non-scheduled data transfer. Characterized in that the method. The method of claim 3, wherein the additional processes include: The method as specified by the radio network controller. The method of claim 3, wherein the additional processes include: The method as specified by the terminal as many as necessary for the transmission of the non-scheduled data. The method of claim 1, wherein the non-scheduling data, The Guaranteed Bit Rate Service (GBR) data, which must guarantee a predetermined data rate. A method for receiving unscheduled data of a reverse link in a mobile communication system, Establishing a plurality of automatic retransmission request (HARQ) processes for reverse packet reception; For each of the plurality of processes, identifying whether the process is for receiving non-scheduled data of a reverse link; Reserving the required amount of resources for the processes for receiving the non-scheduled data; Performing scheduling for reverse packet transmission for all of the plurality of processes in consideration of the reserved resource for the processes for receiving the non-scheduled data; And transmitting a scheduling grant to the remaining processes except for the non-scheduled data receiving process among the plurality of processes according to the scheduling. The method of claim 7, wherein the checking process, Receiving information related to transmission of the non-scheduled data from a radio network controller (RNC) controlling the reverse packet reception; Identifying the indicated reference processes as processes for receiving the non-scheduled data in accordance with the information related to the transmission of the non-scheduled data. 10. The method of claim 8, wherein the checking step, Receiving data through the plurality of processes and confirming whether the received data is non-scheduling data; And if the received data is non-scheduled data, determining that the processes that have received the non-scheduled data are processes for receiving the non-scheduled data. The method of claim 7, wherein the non-scheduling data, The guaranteed bit rate service (GBR) data, which must guarantee a predetermined data rate.

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