KR20060104559A - Method and apparatus for configuring transport format combination set efficiently in communication system - Google Patents

Abstract

The present invention relates to an operation of configuring a transport format combination set (TFCS) in a mobile communication system, and more particularly, to a method and an apparatus for efficiently transmitting and receiving control information necessary for configuring a transport format combination set. In the present invention, the terminal and the network calculate the meaning of the transmission format combination according to a previously agreed method, thereby reducing the amount of control information exchanged on the wireless channel.

Transport Format, Transport Format Set, Transport Format Combination, Transport Format Combination Set, Calculated Transport Format Combination, TFC-CTFC Auto mapping, Valid Combination Set

Description

METHOD AND APPARATUS FOR CONFIGURING TRANSPORT FORMAT COMBINATION SET EFFICIENTLY IN COMMUNICATION SYSTEM}

1 is a diagram illustrating a radio access network structure of a typical asynchronous mobile communication system.

2 illustrates the structure of a wireless protocol in a typical mobile communication system.

3 illustrates a process of exchanging messages for transport channel configuration.

4 is a diagram illustrating a process of configuring a transport format combination set by a terminal;

5A illustrates an example of transport channel configuration information.

5B illustrates an example of CTFC calculation.

5C is a diagram illustrating an example of TFC-CTFC mapping information.

Figure 6 illustrates the exchange of messages for transport channel configuration in accordance with a preferred embodiment of the present invention.

7 is a diagram illustrating an operation of configuring a transport format combination set (TFCS) by a terminal according to an embodiment of the present invention.

8A illustrates an example of transport channel configuration information for describing a preferred embodiment of the present invention.

8B is a diagram illustrating an example of effective combination set information for explaining a preferred embodiment of the present invention.

8C is a diagram showing an example of CTFC calculation for explaining a preferred embodiment of the present invention.

8D is a diagram illustrating an example of automatic mapping of TFC-CTFCs for explaining a preferred embodiment of the present invention.

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

10 illustrates the structure of an RNC in accordance with a preferred embodiment of the present invention.

11 is a diagram illustrating a structure of a terminal according to an embodiment of the present invention.

The present invention relates to the construction of a transport format combination set (TFCS) in a mobile communication system, and more particularly, to a method and apparatus for efficiently transmitting and receiving control information required for the construction of a transport format combination set.

Today's mobile communication systems are evolving from the initial voice-oriented services to high-speed, high-quality wireless data packet communication systems for providing data and multimedia services. Here, a system based on the Global System for Mobile Communications (GSM) and General Packet Radio Services (GPRS), which are European mobile communication systems, and using Wideband Code Division Multiple Access (CDMA). In the Universal Mobile Telecommunication Service (UMTS) mobile communication system, which is a third generation mobile communication system, TFCS refers to a set of transport format combinations (TFCs) indicating a multiplexing situation of data transmitted through a physical channel. When the terminal and the base station transmit data through a physical channel, the terminal and the base station transmits a transport format combination identifier (TFCI) indicating a multiplexing situation of the data with reference to the TFCS. The configuration of the TFCS is made during a call setup process, wherein the TFCS configuration information is exchanged between the UE and the RNC. However, when the amount of the TFCS configuration information is large, the time required for call setup increases, and the consumption of radio transmission resources also increases.

1 is a diagram schematically illustrating a structure of a general mobile communication system. Here is a diagram showing the structure of a UMTS system.

Referring to FIG. 1, a mobile communication system includes a core network (CN) 100 and a plurality of radio network subsystems (hereinafter, referred to as “RNS”) 110 and 120. The plurality of RNSs 110 and 120 constitute a UMTS Terrestrial Radio Access Network (UTRAN). The CN 100 is composed of a Serving GPRS Support Node (SGSN) and a Gateway GPRS Support Node (GGSN) to connect the UTRAN to a packet data network such as the Internet.

The RNSs 110 and 120 are composed of a Radio Network Controller (hereinafter, referred to as "RNC") 111 and 112 and a plurality of base stations Node Bs 115, 113, 114, and 116. In detail, the RNS 110 includes the RNC 111 and the base stations 115 and 113, and the RNS 120 includes the RNC 112 and the base stations 114 and 116. The RNCs 111 and 112 are classified into a serving RNC, a drift RNC, and a control RNC according to a role thereof. The serving RNC manages the information of each UE and is responsible for data transmission with the CN 100, and the drift RNC directly connects to the UE wirelessly. The control RNC controls radio resources of each of the base stations.

The RNCs 111 and 112 and the base stations 115, 113, 114, and 116 are connected through an interface called Iub, and the connections between the RNCs 111 and 112 are connected through an interface called Iur. Although not shown in FIG. 1, the UE 130 and the UTRAN are connected by a Uu interface using a radio protocol. The RNCs 111 and 112 allocate radio resources to a plurality of base stations 115. 113. 114. 116 that they manage, and the base stations 115. 130 actually provides radio resources allocated from the RNCs 111 and 112. The radio resource is configured for each cell, and the radio resource provided by each base station means a radio resource for a specific cell managed by the base station. The user terminal 130 sets up a radio channel using radio resources of a specific cell managed by the base station 115. 113. 114. 116, and transmits / receives data through the set radio channel. Since the user terminal 130 recognizes only the physical channel configured for each cell, the distinction between the base station and the cell is meaningless. Therefore, hereinafter, the base station and the cell will be used interchangeably.

2 is a diagram illustrating the structure of a wireless protocol in a general mobile communication system. As shown in FIG. 2, the Uu interface includes a control stage (C-plane) and a user stage (U-plane). The control end performs a function of exchanging control signals between the UE and the RNC, and the user end performs a function of transmitting user data between the UE and the RNC.

The signal 200 of the control stage includes a radio resource control (RRC) layer 204, a radio link control (RLC) layer 210, and media access. Control (hereinafter referred to as MAC) layer 214 and physical layer (L1: Physical Layer) 218 is processed. The user-side information 202 includes a Packet Data Convergence Protocol (PDCP) layer 206, a broadcast / multicast control (BMC) layer 208, an RLC layer 210, and a MAC layer 214. And the physical layer 218 or the like.

The physical layer 218 is a layer for providing an information transmission service using a wireless transmission technology, and corresponds to the first layer (Layer 1: L1) of OSI 7. The physical layer 218 is connected to the MAC layer 214 through transport channels 216. Data exchange occurs between the MAC layer 214 and the physical layer 218 via the transport channels 216. Transport formats are defined in the transport channels 216, and a transport format (TF) is defined by a manner in which specific data is processed in the physical layer 218. The set of TFs defined in one transport channel is called a transport format set (TFS).

Table 1 below shows an example of TFS.

Semi-Static Part Dynamic Part TTI = 20 msec Channel Coding = CC, 1/3 RM = 155 TF 0 0 * 148 bit TF 1 1 * 148 bit TF 2 2 * 148 bit

Here, CC means Chase Combining, which is one of a hybrid automatic repeat request (HARQ) scheme. As shown in Table 1, the TF has the properties of a semi-static part and a dynamic part. The semi-static part is an attribute commonly applied to all the TFs defined in one transmission channel. The semi-static part includes a transmission time interval, a channel coding scheme, a coding rate, a rate matching parameter, and the like. The dynamic part consists of a transport block size and a transport block set size and has different values for each of the TFs. The transport block refers to data transmitted through a transport channel. In Table 1, one transport block has a size of 148 bits. The transport block set refers to the number of transport blocks transmitted in one transmission period. For example, in Table 1, the size of the transport block set of TF 1 becomes 1, which means that one transport block of 148 bits is transmitted for 20 msec.

Multiple transport channels may be multiplexed in one physical layer. In this case, data transmitted through a physical channel at a specific time may be represented as a set of TFs of a multiplexed transport channel. For example, assume that three transport channels are multiplexed as follows.

Transport Channel 1 = TF 0, Transport Channel 2 = TF 2, Transport Channel 3 = TF 1

The combination of the TFs of the transport channels is called TFC (Transport Format Combination).

The UE and the RNC agree TFCs to be used during the call during the call setup process. The set of TFCs is called a TFCS (Transport Format Combination Set).

The MAC layer 214 is responsible for transferring data transmitted from the RLC layer 210 through the logical channel 212 to the physical layer 218 through an appropriate transport channel 216, and the physical layer 218 The data transmitted through the transport channel 216 is transferred to the RLC layer 210 through an appropriate logical channel 212. In addition, the MAC layer 214 inserts additional information into the data transmitted through the logical channel 212 or the transmission channel 216 or interprets the inserted additional information to perform an appropriate operation and performs a random access operation. It has a role to control.

The MAC layer 214 and the RLC layer 210 are connected to each other through a logical channel 212. The MAC layer 214 is divided into several sub layers. The RLC layer 210 is responsible for setting and clearing the logical channel 212.

In general, the RLC layer of the transmitting side is a segment of a size suitable for transmitting over a radio channel by dividing, concatenating, or padding data transmitted from an upper layer, that is, an RLC Service Data Unit (RLC SDU). Make it. Thereafter, inserting information about division / concatenation / padding into the segments and inserting a serial number to create protocol data units (hereinafter referred to as RLC PDUs) and delivering the RLC PDUs to lower layers. Do it. The RLC UM layer on the receiving side interprets the serial number of the RLC PDU transmitted from the lower layer and information on division / concatenation / padding, reconstructs the RLC SDU, and delivers it to the upper layer.

The PDCP layer 206 is located above the RLC layer 210. The PDCP layer 206 is configured to change a header compression function of data transmitted in the form of an IP (Internet Protocol) packet and an RNC that provides a service with UE mobility. It is responsible for the function of delivering data without loss. The BMC layer 208 is also located above the RLC layer 210 and supports a broadcast service for transmitting the same data to a plurality of unspecified UEs located in a specific cell. The RRC layer 204 is responsible for allocating or releasing radio resources between the UTRAN and the UE.

The UE and the RNC configure a transport channel in a call setup process. This means that when the RNC informs the TFSs of the transport channels and notifies the TFCS configuration information, the UE configures the transport channel accordingly and configures the TFCS.

3 illustrates an operation of exchanging messages for transport channel configuration.

Referring to FIG. 3, the RNC 310 transmits a transport channel configuration message 315 to the terminal 305. The message 315 refers to a general message for transmitting control information related to a transport channel. For example, the message 315 corresponds to a radio bearer setup message or a transport channel reconfiguration message. The message 315 includes transport channel configuration information 320, TFCS (Transport Format Combination Set) configuration information 325, and the like. The TFCS configuration information includes TFC-CTFC mapping information 330. The terminal 305 configures a transmission channel and TFCS using the information 320 and 325, and then transmits a response message 340 to the RNC 310. Thereafter, the terminal 305 and the RNC 310 transmit and receive data using a transmission channel.

4 illustrates an operation of configuring the TFCS by the terminal using the transport channel configuration information and the TFCS configuration information.

Referring to FIG. 4, in step 405, the UE receives transport channel configuration information, and in step 410, calculates a CTFC (Calculated Transport Format Combination) using the information. CTFC means all possible combinations of TFs of different transport channels. In step 415, the UE establishes a correspondence relationship between the TFC and the CTFC using the TFC-CTFC mapping information included in the TFCS configuration information.

The mapping operation is described in more detail with reference to FIGS. 5A to 5C, for example. Hereinafter, it is assumed that three transport channels are configured in the terminal. For convenience of description, the semi-static part of each transport channel is not shown.

The TFs of each transport channel are configured as shown in FIG. 5A, three TFs are configured in DCH 1, two TFs are configured in DCH 2, and two TFs are configured in DCH 3. Here, the DCH x means a transport channel whose transport channel identifier is x.

The terminal calculates a CTFC using the TFs of the transport channels. That is, the terminal arranges the transport channels in the order of the identifiers, and fixes the TFs of the transport channel with the higher identifier to a specific value and changes the TFs of the transport channel with the lower identifier from the lowest value to the highest value. Combinations of transport channels and TFs generated at this time are CTFCs, and the terminal sequentially assigns identifiers to the CTFCs. CTFC n means a CTFC having an identifier n. The CTFC calculation process basically calculates all combinations of TFs of a given transport channel.

The CTFC calculation process is shown in Figure 5b.

The UE fixes the TFs of DCH 2 and DCH 3 to the lowest values TF0 and TF0, and then changes the TF of DCH 1 from the lowest value TF0 to the highest value TF2. Combinations occurring in the above process are CTFC 0, CTFC 1, CTFC 2.

The UE fixes the TF of DCH 2 to the next lowest value TF 1, fixes the TF of DCH 3 to the lowest value TF0, and then changes the TF of DCH 1 from TF0 to TF2. Combinations that occur in the process are CTFC 3, CTFC 4, CTFC 5.

The terminal fixes the TF of DCH 2 back to TF 0, fixes the TF of DCH 3 to TF 1, and then changes the TF of DCH 1 from TF0 to TF2. Combinations that occur in this process are CTFC 6, CTFC 7, CTFC 8.

The terminal fixes the TF of DCH 2 to TF 1, fixes the TF of DCH 3 to TF 1, and then changes the TF of DCH 1 from TF0 to TF2. Combinations occurring in the above process are CTFC 9, CTFC 10, CTFC 11.

After calculating the CTFC using the TFs of the given transport channels as described above, the UE performs a TFC-CTFC mapping operation. The TFC-CTFC mapping operation is an operation of determining the TF combination that a specific TFC means.

TFC-CTFC mapping is performed using TFC-CTFC mapping information included in TFCS configuration information. The TFC-CTFC mapping information is information indicating which CTFC corresponds to a specific TFC.

For example, as shown in FIG. 5C, if TFC 0 is mapped to CTFC 0, TFC 0 is a combination of TF0 of DCH 1 and TF0 of DCH 2 and TF0 of DCH 3. If TFC 5 is mapped to CTFC 7, TFC 5 is a combination of TF1 of DCH 1 and TF 0 of DCH 2 and TF 1 of DCH 3. The TFC-CTFC mapping information as described above is signaled for each TFC. That is, as shown in FIG. 5C, to use eight TFCs, CTFCs corresponding to each TFC must be separately signaled.

As described above, the method of signaling mapping information between TFCs and CTFCs works well when the number of TFCs is small. However, as the number of TFCs increases, the number of signaling TFC-CTFC mapping information also increases, which causes a problem in that the signaling load increases.

Accordingly, the present invention, which was devised to solve the problems of the prior art operating as described above, reduces the amount of control information required when configuring a transport format combination set, thereby reducing call setup time and efficiently using transmission resources. Provide the device.

The present invention provides a method and apparatus for reducing the size of TFCS configuration information by allowing a terminal to configure TFCS according to a predetermined rule.

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, if it is determined that a detailed description of a known function or configuration may unnecessarily flow the gist of the present invention, the detailed description thereof will be omitted. 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.

The present invention to be described later, the RNC informs the UE of the combinations of the TFs of the specific transport channels, the available combinations, and the UE proposes a method of mapping CTFCs and TFCs corresponding to the available combinations one-to-one.

In the configuration of the transport format combination set (TFCS), the mapping between the TFC and the CTFC may be performed according to a predetermined rule without signaling the entire mapping relationship between the TFCs and the CTFCs. In this case, the UE automatically maps all possible combinations of the transport channels and the TFs (CTFCs) to TFCs one-to-one. However, this method can be applied when the mapping relationship between TFC and CTFC is one-to-one. In the case of a voice service using an adaptive multi-rate (AMR) codec, the TFC and the CTFC do not correspond one-to-one because of the characteristics of data generated by the AMR codec.

For example, the AMR codec having a code rate of 12.2 kbps generates 244 bits of data every 20 msec or 39 bits of data every 160 msec. The 244 bits of data are actual voice data, and the 39 bits of data are silence data generated in a silent section. The 244 bits of voice data are processed in three parts of 81 bits, 103 bits, and 60 bits on the transmission channel. That is, the 81 bits, 103 bits, and 60 bits are processed and transmitted in separate transmission channels.

This results in the fact that only some of the combinations of TFSs defined in the transport channels are used. For example, in Table 2 below, DCH 1, DCH 2, and DCH 3 provide an AMR voice service.

DCH 1 DCH 2 DCH 3 TF0, bits 0 * 81 0 * 103 0 * 60 TF1, bits 1 * 31 1 * 103 1 * 60 TF2, bits 1 * 81 N / A N / A

Here, N / A means not available. In Table 2, the total number of possible combinations is 3 x 2 x 2 = 12, but only three combinations are actually used.

1.When data does not occur in the AMR codec: DCH 1 = TF0, DCH 2 = TF0, DCH 3 = TF0

2. When 39 bit data occurs in AMR codec: DCH 1 = TF1, DCH 2 = TF0, DCH 3 = TF0

3. When 244 bit data occurs in AMR codec: DCH 1 = TF2, DCH 2 = TF1, DCH 3 = TF1

In this case, when only a part of the entire combination is used, the CTFC and the TFC cannot be mapped one-to-one as mentioned above.

Therefore, in the preferred embodiment of the present invention, the RNC informs the UE of the available combinations of the TFs of the specific transport channels, and the UE maps CTFCs corresponding to the available combinations to the TFC one-to-one.

6 illustrates an operation of exchanging control messages for configuration of a transport channel according to an exemplary embodiment of the present invention.

Referring to FIG. 6, the RNC 610 transmits a transport channel configuration message 615 to the terminal 605. The message 615 refers to a general message for transmitting control information related to a transport channel. For example, the message 615 corresponds to a radio bearer setup message or a transport channel reconfiguration message.

The message 615 includes the configuration information 620 of the transmission channel, the TFCS configuration information 625, and the like, as in the case of FIG. 3. However, the TFCS configuration information 625 includes information 630 indicating to automatically perform mapping between TFC-CTFCs, not TFC-CTFC mapping information 330, and information to be referenced when determining a CTFC to be mapped to TFCs. ) Is inserted. The information 635 which is referred to when determining the CTFC to be mapped to the TFC is, for example, a valid combination set (valid_combination_set) regarding available combinations. The information 630 indicating to automatically perform the mapping between the TFCs and the CTFCs is called an auto mapping indicator.

The terminal 605 configures a transmission channel using the information 620 and 625, calculates a CTFC, performs mapping between the CTFC belonging to the effective combination set 639 and the TFC, and then sends a response message 640 to the RNC. Send to 610. Thereafter, the terminal 605 and the RNC 610 transmit and receive data using the configured transport channel.

According to a preferred embodiment of the present invention, a process of configuring a TFCS by the terminal using transport channel configuration information and TFCS configuration information is shown in FIG.

Referring to FIG. 7, in step 705, the UE receives transport channel configuration information and TFCS configuration information. In step 710, the UE calculates CTFCs using the information. If the TFCS configuration information includes the automatic mapping indicator and the effective combination set, in step 713, the UE removes the CTFCs not included in the valid combination set from the calculated CTFCs. In step 715, the UE maps the remaining CTFCs one-to-one to the TFC.

The operation will be described in more detail with the example of FIGS. 8A to 8C.

Four transmission channels are configured in the terminal, and DCH 1, DCH 2, and DCH 3 are allocated to 12.2 kbps AMR voice data. The TFs of each transport channel are configured as shown in FIG. 8A, and three TFs are defined for DCH 1, two TFs for DCH 2, two TFs for DCH 3, and four TFs for DCH 4.

12 combinations may be defined through DCH 1, DCH 2, and DCH 3, but if only three of them are used, the RNC defines the three combinations as an effective combination set as shown in FIG. Send through configuration information.

As such, the effective combination set is determined by the RNC by referring to the characteristics of the service. In the above example, the following three combinations are included in the effective combination set. Subsequently, the combinations included in the effective combination set are called effective combinations.

Effective Combination 0: DCH 1 = TF0, DCH 2 = TF0, DCH 3 = TF0

Effective Combination 1: DCH 1 = TF1, DCH 2 = TF0, DCH 3 = TF0

Effective Combination 2: DCH 1 = TF2, DCH 2 = TF1, DCH 3 = TF1

The terminal receives the transport channel configuration information and the TFCS configuration information, and calculates the CTFCs using the TFs of the transport channels. All possible combinations are then calculated regardless of whether the transport channels are associated with the effective combination set.

The calculation results of all the possible CTFCs are shown in FIG. 8C. As shown in the figure, all four transport channels are configured, and since three, two, two, and four TFs are defined for each transport channel, all 48 CTFCs are calculated.

Of the 48 CTFCs, the CTFC including the effective combination is CTFC 0, CTFC 1, CTFC 11, CTFC 12, CTFC 13, CTFC 23, CTFC 24, CTFC 25, CTFC 35, CTFC 36, CTFC 37, CTFC 47 There is this. For example, CTFC 1 includes DCH 1 = TF 1, DCH 2 = TF 0, DCH 3 = TF 0, DCH 4 = TF 0, and includes an effective combination 0. On the other hand, CTFC 2 is DCH 1 = TF 2, DCH 2 = TF 0, DCH 3 = TF 0, DCH 4 = TF 0, and does not include any of valid Combination 0, Effective Combination 1 or Effective Combination 2.

The UE sequentially maps CTFCs including the effective combination from CTFC having a low identifier to TFC. For example, as shown in FIG. 8D, TFC 0 is mapped to CTFC 0, TFC 1 to CTFC 1, TFC 2 to CTFC 11, and TFC 3 to CTFC 12.

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

Referring to FIG. 9, in step 905, the UE receives transport channel configuration information and TFCS configuration information through a transport channel configuration message, and calculates CTFC sets of CTFCs available using the transport channel configuration information in step 910.

In step 915, the UE checks whether the TFCS configuration information of the transport channel configuration message has a valid combination set for an automatic mapping indicator and a valid combination instructing to automatically perform TFC-CTFC mapping. If not included, the TFCS configuration information includes TFC-CTFC mapping information. Accordingly, in step 920, the UE performs mapping between the TFC and the CTFC according to the TFC-CTFC mapping information of the TFCS configuration information as in the conventional art.

If the automatic mapping indicator and the effective combination set are included, the terminal proceeds to step 925. In step 925, the UE removes CTFCs that do not include an effective combination from the CTFC set calculated in step 910. In other words, when a plurality of valid combinations are included in the effective combination set, the CTFC not including one of the valid combinations is a CTFC which will not be used, and thus is removed in step 925.

In step 930, the UE maps the CTFC having the lowest identifier among the CTFCs included in the new CTFC set from which the CTFCs not including the valid combination are removed and the TFC 0. In step 935, the UE maps the next CTFC of the new CTFC set to the next TFC. In step 940, the UE repeats the automatic mapping operation until all CTFCs of the new CTFC set are mapped to the TFC.

10 is a diagram showing the configuration of an RNC according to a preferred embodiment of the present invention.

Referring to FIG. 10, the RNC configures transport channel configuration information and TFCS configuration information generated by the transport channel configuration information generator 1010 and the TFCS configuration information generator 1055 through the message generator 1080. The message is sent to the UE.

In detail, the transport channel configuration information generator 1010 generates configuration information related to the transport channel and transmits the configuration information to the message generator 1080. In addition, the TFCS configuration information generation unit 1055 generates the TFCS configuration information and delivers it to the message generation unit 1080. If it is determined that TFC-CTFC automatic mapping is possible, the TFCS configuration information generator 1055 includes a TFC-CTFC automatic mapping indicator generator 1030 to instruct to automatically perform mapping between TFC-CTFCs. An automatic mapping indicator is generated and the generated automatic mapping indicator is transmitted to the message generator 1080. In addition, the effective combination set information generation unit 1040 generates valid combination set information in consideration of characteristics of services provided through transport channels. For example, if the AMR voice service is provided through arbitrary transport channels, the effective combination set information generator 1040 may be configured to provide the AMR voice service in consideration of the size of data generated from the codec of the voice service. Identify possible combinations related to the transport channels and insert the possible combinations into the effective combination set information.

The message generator 1080 receives the TFCS configuration information including the automatic mapping indicator and the effective combination set information, generates a transport channel configuration message including the transport channel configuration information and the TFCS configuration information, and transmits and receives a transceiver ( 1060). The transceiver 1060 transmits the transport channel configuration message to the UE through a control channel, and receives a response message corresponding to the transport channel configuration message from the UE.

11 is a diagram showing the configuration of a UE according to a preferred embodiment of the present invention.

Referring to FIG. 11, a transceiver 1110 of a UE receives a transport channel configuration message including transport channel configuration information and TFCS configuration information from an RNC. The transport channel controller 1120 configures a transport channel using transport channel configuration information of the received channel configuration message, and the CTFC calculator 1130 calculates possible CTFCs according to the transport channel configuration information. The TFC-CTFC mapping unit 1140 performs mapping between CTFCs and TFCs according to the TFCS configuration information.

If the TFCS configuration information includes the TFC-CTFC automatic mapping indicator and the valid combination set information together, the TFC-CTFC mapping unit 1140 does not include the valid combinations of the valid combination set information among the calculated CTFCs. After removing the missing CTFCs, the remaining CTFCs are mapped to the TFCs.

After the TFC-CTFC mapping unit 1140 performs TFC-CTFC mapping as described above, the transceiver 1110 transmits a response message corresponding to the transport channel configuration message to the RNC. Thereafter, the UE and the RNC transmit and receive data using the configured transport channel.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but 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 described embodiments, 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.

The present invention reduces the amount of time and control information required to configure a transport format combination set in a mobile communication system. This reduces call setup time and enables efficient use of radio transmission resources.

Claims (12)

In the method of configuring a transport format combination set in a mobile communication system, Receiving a transport channel configuration message including a transport channel configuration information and a transport format combination set (TFCS) configuration information from a wireless network controller; Calculating a CTFC set including all combinations of different transport channels and TFs according to the transport channel configuration information; And mapping valid CTFCs among CTFCs in the CTFC set to TFCs in a one-to-one manner from a low identifier according to the TFCS configuration information. The method of claim 1, wherein the TFCS configuration information, And a valid combination set information indicative of a TFC-CTFC automatic mapping indicator and the valid CTFCs. The method of claim 2, wherein the mapping process, Generating a new CTFC set by removing the CTFCs not including the effective combination of the effective combination set from the calculated CTFC set; Mapping all CTFCs of the new CTFC set to TFCs from low identifier to one to one. In the method of configuring a transport format combination set in a mobile communication system, Generating transport channel configuration information related to the configuration of the transport channel; Generating TFCS configuration information including an automatic mapping indicator instructing to automatically perform TFC-CTFC mapping and valid combination set information indicating valid CTFCs; Inserting the transport channel configuration information and the TFCS configuration information into a transport channel configuration message; And transmitting the generated transport channel configuration message to a user terminal. The method of claim 4, wherein the TFCS configuration information, And a valid combination set information indicative of a TFC-CTFC automatic mapping indicator and the valid CTFCs. The method of claim 4, wherein the transport channel configuration message, The method characterized in that the radio bearer configuration message or transport channel reconfiguration message. In the device of the transport format combination set in the mobile communication system, A transceiver for receiving a transport channel configuration message including transport channel configuration information and TFCS configuration information from a wireless network controller and transmitting a response message when the configuration of the transport channel is completed according to the configuration message; A transport channel controller configured to configure transport channels using the transport channel configuration information; A CTFC calculator configured to calculate a CTFC set including all combinations of different transport channels and TFs using the transport channel configuration information; And a TFC-CTFC mapping unit for mapping valid CTFCs among the CTFCs of the CTFC set to TFCs in a one-to-one manner according to the TFCS configuration information. The method of claim 7, wherein the TFCS configuration information, And a valid combination set information indicative of a TFC-CTFC automatic mapping indicator and the valid CTFCs. The method of claim 8, wherein the mapping unit, Remove the CTFCs that do not include the effective combination of the effective combination set from the calculated CTFC set to generate a new CTFC set, and mapping all the CTFCs of the new CTFC set to TFCs from low identifier to one-to-one The device. In the device of the transport format combination set in the mobile communication system, A transport channel configuration information generator for generating transport channel configuration information related to the configuration of transport channels; A TFCS configuration information generation unit for generating TFCS configuration information including an automatic mapping indicator for automatically performing TFC-CTFC mapping and valid combination set information indicating valid CTFCs; A message combiner for inserting the transport channel configuration information and the TFCS configuration information into a transport channel configuration message; And a transmitting / receiving unit which transmits the generated transmission channel configuration message to a user terminal and receives a response message corresponding to the transmission channel configuration message. The method of claim 10, wherein the TFCS configuration information, And a valid combination set information indicative of a TFC-CTFC automatic mapping indicator and the valid CTFCs. The method of claim 10, wherein the transport channel configuration message, The device characterized in that the radio bearer configuration message or transport channel reconfiguration message.

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