KR20020067245A - Method of transmitting data and signaling control message on wide-band wireless telecommunication system - Google Patents

Abstract

PURPOSE: A method for transmitting data and signaling control messages in a W(Wideband)-CDMA system is provided to ensure the QoS(Quality of Service) of a service requiring HSDPA(High Speed Downlink Packet Access) and to reliably transmit signaling control messages by transmitting data and signaling messages through their respective channels, in the case of using HSDPA in a UTRAN(UTMS Terrestrial Radio Access Network). CONSTITUTION: If a message is received from an upper layer(301), the RLC(Radio Link Control) protocol entity of an RNS(Radio Network Subsystem) analyzes whether the received message is a data message or a signaling control message(302). If the received message is a data message, the RLC protocol entity judges that the data message uses an HS-DSCH(High Speed Downlink Shared CHannel)(303). Also the RLC protocol entity judges that HS-DSCH control information uses a DPCCH(Dedicated Physical Control CHannel), a new dedicated type channel or the HS-DSCH(304). Then the RLC protocol entity transmits the data message to a relevant UE(User Equipment) using the HS-DSCH. Also the RLC protocol entity transmits the HS-DSCH control information through the DPCCH, the dedicated type channel or the HS-DSCH(305).

Description

Method of transmitting data and signaling control message on wide-band wireless telecommunication system

The present invention relates to a method of transmitting data and signal control messages in a broadband wireless communication system and a computer readable recording medium recording a program for realizing the method. When using High Speed Downlink Packet Access (HSDPA) in a next-generation mobile communication system such as -2000 (International Mobile Telecommunication) or Universal Mobile Telecommunication Service (UMTS), data and signaling control messages are differently transmitted. The present invention relates to a method for transmitting through a channel.

FIG. 1 is a diagram illustrating a configuration of a general broadband wireless communication network (W-CDMA), and illustrates an example of a UTRAN (UTMS Terrestrial Radio Access Network).

As shown in FIG. 1, an asynchronous mobile communication network (UTRAN) includes an asynchronous mobile station (UE) 10, an asynchronous radio network (RNS) 20, and a wireless communication core network. (For example, the European asynchronous GSM-MAP core network 30 is organically connected and configured, and the protocol stack structure in each interworking structure is shown in FIG.

Herein, when the HSDPA is used in an asynchronous mobile communication network (UTRAN), the present invention proposes a method of transmitting data and a signaling control message on different channels, thereby providing a service quality of a service requiring HSDPA. (QoS: Quality of Service) is also guaranteed, and it is possible to transmit a reliable signaling control message (Signal Control Control Message), it is a way to optimize the performance of the system and the performance of the HSDPA. This can be applied to a technical field using a fast data transmission service and a service provided by converting a voice into an Internet Protocol (IP) packet.

In in the asynchronous mobile communication system (UTRAN) interlocking structure as shown in Figure 1, the current standardization body 3GPP (3 ^rd Generation Partnership Project) is discussing about a technique called (High Speed Downlink Packet Access) HSDPA .

HSDPA improves the radio interface capacity of a wireless system to support high data rate services such as web browsing and multimedia. The present invention proposes a scheme which can be used, which is a technique of modifying a DSCH (Downlink Shared Channel) used in "Release 99" of an asynchronous mobile communication system. This is a technology that is currently being discussed for services requiring a large amount of data and fast speed, such as Internet service, video service.

HSDPA not only provides the existing packet data service quickly but also provides a service that changes voice to Internet Protocol (IP) packet. Such HSDPA requires a number of functions, namely, Adaptive Modulation and Coding Scheme (AMCS), Hybrid Automatic Repeat for reQuest (ARQ), Fast Cell Site Selection (FCSS), and Enhanced Downlink Shared Channel (DSCH). Is as follows.

Adaptive Modulation and Coding Scheme (AMCS) is a modulation and coding rate of a signal transmitted according to a signal quality and a channel condition received from a mobile station (UE) 10. Rate). That is, a higher modulation and coding rate is assigned to the mobile station (UE) 10 that is close to the base station Node B of the asynchronous radio network (RNS) 20, and the base station Node B A lower modulation and coding rate is assigned to a mobile station (UE) 10 that is far from the other. This is a method of changing the modulation and coding method of the data according to the amount of data to be transmitted and the wireless environment. The modulation methods currently discussed are 4, 8, 16, 32, 64 QAM, etc. It is used in a variable way.

On the other hand, there are two types of Hybrid ARQ. One is a Stop And Wait (SAW) scheme based on DSCH Dual Channel, and the other is Asynchronous and Adaptive Incremental Redundancy (AAIR) scheme.

Hybrid ARQ includes the Forward Error Correction (FEC) function in the ARQ function that retransmits when there is an error in received data.The ARQ method discussed in HSDPA requires fast processing speed, so the base station having a physical layer (Node B) Is discussing ways to deal with it.

On the other hand, FCSS (Fast Cell Site Selection) is proposed to improve the performance of the HSDPA, the mobile station (UE) 10 is the best cell (Cell) at the time to receive the packet data (Packet Data) by the Enhance DSCH Selectively informs the information of the selected cell to the asynchronous radio network (RNS) 20 using the uplink dedicated channel (DCH), and the asynchronous radio network (RNS) 20 uses this information. The UE 10 transmits packet data to be transmitted using the enhancement DSCH of the selected cell.

That is, when one mobile station (UE) 10 is connected to several base stations (Node B), such as a handover, the FCSS transmits data from all connected base stations (Node B). 10) and transmits data to the mobile station (UE) 10 only from the base station Node B having the best wireless environment among the connected base stations Node B, and the other connected base station Node B is It is a method of transmitting only information necessary for connecting a physical channel without transmitting data, and this operation is performed by a mobile station (UE) based on a radio frame and informs by selecting a base station (Node B) to which data is to be transmitted. The method receives data from (Node B).

On the other hand, HSDPA requires a smaller radio frame size in order to improve the performance of the hybrid ARQ, and for this purpose, a conventional DSCH radio frame size of 10 ms is changed to 5 ms or 3.33 ms. This has been proposed. This is called enhanced DSCH.

Currently, 3GPP, which is a standardization organization for asynchronous mobile communication systems, uses HSDPA technology as described above, and uses a modified DSCH in the "asynchronous mobile communication system Release 99" as described above. This defines a frame size and transmission time interval (TTI) of the DSCH smaller than those defined in "Release 99", and newly defines and uses a spreading factor (SF). The defined DSCH is defined as HS-DSCH (High Speed Downlink Shared Channel).

In the case of "Release 99", when providing DSCH control information to the mobile station (UE) 10 to use the DSCH, the asynchronous radio network (RNS) 20 allocates a dedicated physical channel (DPCH).

DPCH is a part that carries the data to be transmitted by the transmitting party per slot (DPDCH: Dedicated Physical Data Channel) and a part that carries information about the processing method of the physical channel of the transmitting side for the DPDCH (DPCCH: Dedicated Physical Control Channel) It is distinguished by.

Control information of the DSCH includes a transmit power control (TPC), a transport format combination indicator (TFCI), pilot information, and the like. The control information of the DSCH is provided to the mobile station (UE) 10 through the DPCCH of the DPCH.

The DPDCH is classified into Data 1 and Data 2, and the DPCCH is composed of TPC, TFCI, and Pilot information.

Currently, 3GPP, which is a standardization organization of asynchronous mobile communication system, discusses the transmission of control information of HS-DSCH in the following manner in order to use HS-DSCH when using HSDPA technology.

First, the HS-DSCH and the DPCH are used by using the DPCCH like the DSCH of "Release 99".

Secondly, a new dedicated type channel that functions as a DPCCH of a DPCH used with a DSCH of "Release 99" is defined and used with an HS-DSCH.

Thirdly, unlike the DSCH of "Release 99," the HS-DSCH uses this method by itself.

When using HSDPA in the manner described above, consideration should be given to the transmission method of data and signaling control messages. The signaling control message referred to herein is a radio resource control (RRC) protocol message, and includes a reconfiguration procedure message (radio bearer reconfiguration message, physical channel reconfiguration, etc.) or an active set update message. For example, information on a control protocol data unit (PDU) used to easily use an operation in an RLC AM mode (Radio Link Control Acknowledge Mode) corresponds to this. Here, the type of control PDU operating in the RLC AM mode means a status PDU, a reset PDU, a Reset ACK PDU, and the like.

First, a method of using the HS-DSCH and the DPCH like the DSCH of "Release 99" will be described.

When the HSDPA operates in this manner, in the transmission of data and a signaling control message, data is transmitted through the HS-DSCH, and control information of the HS-DSCH is transmitted through the DPCCH. Is sent. In addition, since a signaling control message is transmitted through an assigned DPDCH, there is no problem in transmitting data and signaling control messages in the HSDPA.

Meanwhile, a method of defining a new dedicated type channel serving as a DPCCH used with a DSCH of "Release 99" and using it with an HS-DSCH is as follows.

When the HSDPA operates in this manner, in the transmission of data and a signaling control message, data is transmitted through the HS-DSCH, and the control information of the HS-DSCH is the same as that of the DPCCH. It is transmitted using a newly defined dedicated type channel. However, a problem occurs in transmitting a signaling control message. That is, in this case, in order to transmit a signaling control message, a new common channel or a dedicated channel must be allocated and used.

However, when a new channel is allocated for a signaling control message, a delay occurs in allocating a new channel so that a signaling control message cannot be transmitted at an accurate time. Problems arise, and for this reason, the performance of HSDPA is degraded.

On the other hand, unlike the DSCH of "Release 99" looks at the method of using the HS-DSCH itself as follows.

When the HSDPA operates in this manner, in the transmission of data and a signaling control message, data is transmitted through the HS-DSCH, and the control information of the HS-DSCH is HS-DSCH. Simultaneously transmits with data through. However, a problem occurs in transmitting a signaling control message. That is, in this case, in order to transmit a signaling control message, a new common channel or a dedicated channel must be allocated and used.

However, in the case of allocating a new channel for a signaling control message, there is a problem in that a signaling control message cannot be transmitted at an accurate time because a time delay occurs in allocating a new channel. And, for this reason, there is a problem that the performance of HSDPA is degraded.

Therefore, in the current technology level, when using HSDPA in an asynchronous mobile communication network (UTRAN), data and signaling control messages are transmitted through different channels, thereby improving QoS of a service requiring HSDPA. In order to guarantee and to enable reliable transmission of a signaling control message, a method for optimizing the performance of the system and the performance of the HSDPA is indispensable.

The present invention has been proposed to solve the above problems, and when using HSDPA in an asynchronous next-generation mobile communication system, the QoS of a service requiring HSDPA by transmitting data and signal control messages through different channels. It is also possible to transmit reliable signal control messages, and to transmit data and signal control messages for optimizing the performance of the system and HSDPA, and a computer readable program having recorded programs for realizing the above methods. The purpose is to provide a recording medium.

1 is an exemplary configuration diagram of a general broadband wireless communication network (W-CDMA).

2 is a protocol stack diagram of a general asynchronous mobile communication system (UTRAN).

3 is a flow diagram of an embodiment of a method of transmitting data and signal control messages in accordance with the present invention.

* Explanation of symbols for the main parts of the drawings

10: mobile station (UE) 20: asynchronous radio network (RNC)

30: wireless communication core network

The present invention for achieving the above object, in the case of using the High Speed Downlink Packet Access (HSDPA) to service a large amount of data at high speed in a broadband wireless communication system (Data) and Signaling Control Message (Signaling Control Message) In the method for transmitting the data, when a detailed physical channel (DPCH) is allocated to transmit high-speed downlink shared channel (HS-DSCH) control information, the data and the signal control message (Signaling) in a wireless network In case that a detailed physical channel (DPCH) is allocated to transmit a control message to a mobile station through different transport channels and transmits high speed downlink shared channel (HS-DSCH) control information, Detailed physical control of the downlink shared channel (HS-DSCH) and transmitting the high speed downlink shared channel (HS-DSCH) control information to the detailed physical channel (DPCH); Transmitted over a channel (DPCCH), and is characterized by transmitting the signaling message (Signaling ControlMessage) through a detailed physical data channel (DPDCH) of the detailed physical channel (DPCH).

In addition, the present invention provides a method for transmitting data and signaling control message when using high speed downlink packet access (HSDPA) to service a large amount of data at high speed in a broadband wireless communication system. In the case where a detailed physical channel (DPCH) for transmitting high-speed downlink shared channel (HS-DSCH) control information is not allocated, the data and the signaling control message in a wireless network. Are transmitted to the mobile station through different channels, the data is transmitted through the high speed downlink shared channel (HS-DSCH), and the high speed downlink shared channel (HS-DSCH) control information is transmitted to the high speed downlink. It is transmitted through a shared channel (HS-DSCH) or a dedicated type channel, and the signaling control message is used during a call setup process. It is characterized in that the transmission through the common channel used (Common Channel).

The present invention for achieving the above object, in order to transmit data (Data) and Signaling Control Message (Signaling Control Message) in the case of using High Speed Downlink Packet Access (HSDPA) to service a large amount of data at high speed, When a detailed physical channel (DPCH) is allocated to transmit a high speed downlink shared channel (HS-DSCH) control information in a broadband wireless communication system having a processor, the data and the signal control in a wireless network If a detailed physical channel (DPCH) is allocated to transmit a signaling control message to a mobile station through different transmission channels and transmits high-speed downlink shared channel (HS-DSCH) control information, the data (Data) ) Is transmitted through a high speed downlink shared channel (HS-DSCH), and the high speed downlink shared channel (HS-DSCH) control information is detailed in the detailed physical channel (DPCH). A computer for recording a program for transmitting a signaling control message (DPCCH) and transmitting a signaling control message through a detailed physical data channel (DPDCH) of the detailed physical channel (DPCH). Provide a readable recording medium.

In addition, the present invention is a broadband with a processor to transmit data (Data) and Signaling Control Message (Signaling Control Message) in the case of using High Speed Downlink Packet Access (HSDPA) to service a large amount of data at high speed In a wireless communication system, when no detailed physical channel (DPCH) for transmitting high-speed downlink shared channel (HS-DSCH) control information is allocated, the data and the signal control message in a wireless network are signaling. The control message is transmitted to a mobile station through different channels, the data is transmitted through a high speed downlink shared channel (HS-DSCH), and the high speed downlink shared channel (HS-DSCH) control information is transmitted to the mobile station. It transmits through a high speed downlink shared channel (HS-DSCH) or a dedicated type channel, and sets up a signaling control message. It provides a computer readable recording medium having a program for realizing the function of transmitting a common channel (Common Channel) that was used in the tablet computer.

In the present invention, when using HSDPA in an asynchronous next-generation mobile communication system, data and signal control messages are transmitted through different channels, thereby ensuring QoS of a service requiring HSDPA, and also providing reliable signal control messages. By doing so, we want to optimize the performance of the system and the performance of HSDPA.

To this end, the present invention transmits data and signaling control messages through different channels in the use of HSDPA in the asynchronous next generation mobile communication system.

More specifically, in the present invention, when a DPCH is allocated to transmit HS-DSCH control information in HSDPA in an asynchronous next generation mobile communication system, the data is HS-DSCH and the HS-DSCH control information is DPCCH. Therefore, the signaling control message (Signaling Control Message) can be transmitted to the DPDCH, guaranteeing the QoS of the HSDPA service, it is possible to improve the HSDPA performance.

In addition, the present invention provides data when a new dedicated type channel such as DPCCH of DPCH is allocated to transmit HS-DSCH control information in HSDPA in asynchronous next generation mobile communication system. Data) is HS-DSCH, HS-DSCH control information is newly allocated dedicated type channel, and Signaling Control Message is a common channel used during call setup. By transmitting in a fast access transport channel (FAC), which is a channel, QoS of the HSDPA service can be guaranteed and HSDPA performance can be improved.

In addition, when the HS-DSCH control information is transmitted through the HS-DSCH in the use of HSDPA in the asynchronous next generation mobile communication system, the data and the HS-DSCH control information are transmitted through the HS-DSCH, The signaling control message is transmitted through the FACH, which is a common channel used during the call setup process, to guarantee the QoS of the HSDPA service and to improve the HSDPA performance.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In case of using HSDPA (High Speed Downlink Packet Access) in asynchronous next generation mobile communication system, QoS of service requiring HSDPA is proposed by suggesting a method of transmitting Data and Signaling Control Message on different channels. The present invention defines the following in order to ensure reliable and also to enable reliable transmission of a signaling control message, thereby optimizing the performance of the system and the performance of the HSDPA.

In the use of HSDPA in an asynchronous next generation mobile communication system, data and signaling control messages are transmitted through different channels.

As a specific method, first, in case of using HSDPA in an asynchronous next generation mobile communication system, when a DPCH is allocated in the same manner as "Release 99" to transmit HS-DSCH control information, the data is HS-DSCH. And the HS-DSCH control information is transmitted through the DPCH. In addition, a signaling control message (Signaling Control Message) is transmitted through the DPDCH.

Second, in the use of HSDPA in an asynchronous next generation mobile communication system, when a DPCH is not allocated not equal to "Release 99" for transmitting HS-DSCH control information, data is transmitted using the HS-DSCH. The HS-DSCH control information is transmitted through the HS-DSCH or a newly defined dedicated type channel. In addition, a signaling control message is transmitted through a common channel that was used during a call setup process.

Looking at the transmission flow of the data (Data) and Signaling Control Message (Signal Control Message) in the transmitter (asynchronous radio network (RNS) 20) using this method proposed in the present invention.

3 is a flowchart illustrating a method of transmitting data and signal control messages according to the present invention.

First, when a Radio Link Control (RLC) protocol entity of an asynchronous radio network (RNS) 20 receives a message from an upper layer in a state of waiting to receive a message (301), the received message is a data message. It is analyzed whether it is a Signaling Control message (302).

As a result of the analysis, if the received message is a data message, the data message is determined to use the HS-DSCH, and an RLC, a medium access control (MAC), and a physical layer operation are performed (303). ). In operation 304, the HS-DSCH control information is determined to use a DPCCH, a new dedicated type channel, or an HS-DSCH.

Thereafter, the received data message uses the HS-DSCH and transmits the HS-DSCH control information to the mobile station (UE) 10 using the DPCCH or a new dedicated type channel or HS-DSCH. (305).

As a result of the analysis, if the received message is a signaling control message rather than a data message, it is checked whether the DPCH is allocated (307).

As a result of the check, if the DPCH is allocated, it is determined that the signaling control message uses the DPDCH, and performs RLC, MAC, and physical layer operations (308). Then, a Signaling Control message is transmitted to the mobile station (UE) 10 using the DPDCH (309).

If the DPCH is not allocated, it is determined that the FACH, which is a common channel that was used during call setup of the signaling control message, is used, and the RLC, MAC, and physical layer operations are performed. Perform 310. Then, the signaling control message is transmitted to the mobile station (UE) 10 using the FACH, which is a common channel (311).

The above process is repeated until all of the HSDPA operations are completed.

The method of the present invention as described above may be implemented as a program and stored in a computer-readable recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.).

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains, and the above-described embodiments and accompanying It is not limited to the drawing.

As described above, when using HSDPA in an asynchronous next generation mobile communication system, data and signaling control are transmitted through different channels, thereby ensuring QoS of a service using HSDPA. Therefore, compatibility with the existing system can be maintained, and the performance of HSDPA can be improved by transmitting the signal control message at the exact time that should be transmitted.

Claims (8)

In a method of transmitting data and signaling control message when using high speed downlink packet access (HSDPA) to service a large amount of data at high speed in a broadband wireless communication system, When a detailed physical channel (DPCH) is allocated to transmit high speed downlink shared channel (HS-DSCH) control information, the data and the signaling control message are differently transmitted in a wireless network. Send to the mobile station via a channel, When a detailed physical channel (DPCH) is allocated to transmit high speed downlink shared channel (HS-DSCH) control information, the data is transmitted through a high speed downlink shared channel (HS-DSCH), and High-speed downlink shared channel (HS-DSCH) control information is transmitted through a detailed physical control channel (DPCCH) of the detailed physical channel (DPCH), and a signaling control message (Signal Control Control Message) is transmitted to the detailed physical channel (DPCH) The data and signal control message transmission method in a wideband wireless communication system, characterized in that for transmitting over a detailed physical data channel (DPDCH). In a method of transmitting data and signaling control message when using high speed downlink packet access (HSDPA) to service a large amount of data at high speed in a broadband wireless communication system, When a detailed physical channel (DPCH) for transmitting high-speed downlink shared channel (HS-DSCH) control information is not allocated, the data and the signaling control message are exchanged with each other in a wireless network. Send to the mobile station through another channel, The data is transmitted through a high speed downlink shared channel (HS-DSCH) and the high speed downlink shared channel (HS-DSCH) control information is transmitted to the high speed downlink shared channel (HS-DSCH) or a detailed type channel. Data is transmitted through a dedicated type channel, and the signaling control message is transmitted through a common channel that was used during a call setup process. And signal control message transmission method. The method according to claim 1 or 2, The wireless network, Substantially, a method for transmitting data and signal control messages in a broadband wireless communication system, characterized in that the asynchronous wireless network. The method of claim 3, wherein The signaling control message (Signaling Control Message), Preferably, the RRC (Radio Resource Control) protocol message, and RLC (Radio Link Control) control Protocol Data Unit (PDU) information, characterized in that it comprises a data and signal control message transmission method in a broadband wireless communication system. The method of claim 3, wherein The common channel (Common Channel), A method for transmitting data and signal control messages in a wideband wireless communication system, characterized in that it is substantially a fast access transport channel (FACH). The method of claim 3, wherein The process of transmitting the data and the signaling control message in the asynchronous wireless network, When a RLC (Radio Link Control) protocol entity of the asynchronous radio network (RNS) receives a message from an upper layer in a message reception state, whether the received message is the data message or not Control) first step of analyzing whether the message; As a result of the analysis of the first process, if the received message is the data message, the data message is transmitted to the mobile station through the high speed downlink shared channel (HS-DSCH), and High-speed downlink shared channel (HS-DSCH) control information is transmitted through the detailed physical control channel (DPCCH) or a new detailed type channel (Dedicated Type Channel) or the high-speed downlink shared channel (HS-DSCH). Transmitting to the second process; A third step of checking whether the detailed physical channel (DPCH) is allocated when the received message is the signaling control message as a result of the analysis of the first step; A fourth step of transmitting a signaling control message to the mobile station through the detailed physical data channel (DPDCH) if the detailed physical channel (DPCH) is allocated as a result of the checking of the third process; And As a result of the checking of the third step, if the detailed physical channel (DPCH) is not allocated, fast access transmission which is a common channel used during call setup of the signaling control message. A fifth process of transmitting to the mobile station (UE) via a channel (FACH) Method for transmitting data and signal control message in a broadband wireless communication system comprising a. In case of using High Speed Downlink Packet Access (HSDPA) to service a large amount of data at high speed, a broadband wireless communication system having a processor is provided to transmit data and a signaling control message. When a detailed physical channel (DPCH) is allocated to transmit high speed downlink shared channel (HS-DSCH) control information, the data and the signaling control message are differently transmitted in a wireless network. Send to the mobile station via a channel, When a detailed physical channel (DPCH) is allocated to transmit high speed downlink shared channel (HS-DSCH) control information, the data is transmitted through a high speed downlink shared channel (HS-DSCH), and High-speed downlink shared channel (HS-DSCH) control information is transmitted through a detailed physical control channel (DPCCH) of the detailed physical channel (DPCH), and a signaling control message (Signal Control Control Message) is transmitted to the detailed physical channel (DPCH) Ability to transmit over detailed physical data channel (DPDCH) A computer-readable recording medium having recorded thereon a program for realizing this. In case of using High Speed Downlink Packet Access (HSDPA) to service a large amount of data at high speed, a broadband wireless communication system having a processor is provided to transmit data and a signaling control message. When a detailed physical channel (DPCH) for transmitting high-speed downlink shared channel (HS-DSCH) control information is not allocated, the data and the signaling control message are exchanged with each other in a wireless network. Send to the mobile station through another channel, The data is transmitted through a high speed downlink shared channel (HS-DSCH) and the high speed downlink shared channel (HS-DSCH) control information is transmitted to the high speed downlink shared channel (HS-DSCH) or a detailed type channel. (Dedicated Type Channel) and transmit the Signaling Control Message (Signaling Control Message) through a common channel (Common Channel) that was used during the call setup (Call Setup) process A computer-readable recording medium having recorded thereon a program for realizing this.