KR20020062470A - Method of transmitting message for high speed downlink packet access on wide-band wireless telecommunication system - Google Patents

Abstract

PURPOSE: A method for transmitting messages to service large data at high speed in a broadband wireless communication system is provided to maintain the compatibility with an existing system by adding new IEs without changing IEs of system information SIB(System Information Block)3/4, radio bearer setup, and radio bearer reconfiguration messages of a UTRAN RRC protocol entity. CONSTITUTION: A UE(User Equipment) receives an RRC(Radio Resources Control) protocol entity message from a UTRAN(UTMS Terrestrial Radio Access Network,111). It is determined whether information related number of MIMO(Multiple Input and Multiple Output) antenna possessed by cells within a node B of the UTRAN exists in the received message(113). If exists, the number of multiple antenna is confirmed(114). The UE stores a cell ID and the number of MIMO antenna of the received message by constructing a MIMO active set(115). The UE processes other information included in the received message(116).

Description

Method of transmitting message for high speed downlink packet access on wide-band wireless telecommunication system in broadband wireless communication system

The present invention relates to a message transfer method for high-speed service of a large amount of data in a broadband wireless communication system, and to a computer-readable recording medium recording a program for realizing the method. RRC (High Speed Downlink Packet Access) for HSDPA using Multiple Input and Multiple Output (MIMO) in next generation mobile communication systems such as IMT-2000 (International Mobile Telecommunication) and UMTS (Universal Mobile Telecommunication Service) Radio resource control) message.

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) 100, an asynchronous radio network (RNS) 200, and a wireless communication core network (eg For example, the European asynchronous GSM-MAP core network 300 is organically connected and configured, and the protocol stack structure in each interworking structure is shown in FIG. 2.

Herein, the present invention relates to a method for utilizing RRC messages of UTRAN in order to efficiently use fast cell site selection (FCSS) technologies, which are the main functions of MIMO and HSDPA, in MIMO-based HSDPA in asynchronous mobile communication network (UTRAN). The present invention can be applied to a technical field using a service provided by changing a fast packet data service and 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. As a way to propose, it is a technology using the DSCH (Downlink Shared Channel) used in the 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 an 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) 100. A higher modulation and coding rate for a mobile station (UE) 100 that is close to a base station (BS) of an asynchronous radio network (RNS) 200. ) And a lower modulation and coding rate for a mobile station (UE) 100 far from the base station (BS). 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 the received data.The ARQ method discussed in HSDPA requires fast processing speed, so Node B with physical layer (Node B Are discussing ways to deal with them.

On the other hand, FCSS (Fast Cell Site Selection) is proposed to improve the performance of the HSDPA, the mobile station (UE) 100 is the best cell (Cell) at the time to receive the packet data (Packet Data) by the Enhance DSCH By using the uplink Dedicated CHannel (DCH) to inform the UTRAN of the selected cell, the UTRAN should be transmitted using the Enhance DSCH of the cell selected by the UE 100 using this information. This is a method of transmitting packet data.

In other words, when one mobile station is connected to multiple base stations such as handoff, the FCSS does not transmit data to all mobile stations, but only the base stations having the best wireless environment are connected to the mobile station. A base station connected to the base station transmits only information necessary for connecting a physical channel without transmitting data. This operation selects and informs a base station to which a mobile station wants to receive data based on a radio frame, and then selects a base station from the selected base station. It is a method of receiving data.

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.

HSDPA can be implemented using only the above-described features, and in addition to the above-described features, the HSDPA can be implemented by adding a technology called multiple input and multiple output (MIMO).

MIMO is an evolution of the Space-Time Transmit Diversity (STTD) technology. Basically, the transmitter and the receiver have the same number of multiple antennas, and the data of "Antenna number of data × Spreading Factor Channelization Code" is mutually different. This method can be simultaneously transmitted using different channelization codes (see FIG. 3). This is a method of transmitting and transmitting data to multiple antennas at the transmitting and receiving side.

In the HSDPA using the above-described techniques, that is, the HSDPA using the MIMO scheme, the mobile station (UE) 100 and the asynchronous radio network (RNS) 200 communicate with the mobile station (UE) and the asynchronous radio network (RNS) 200. ) Have the same number of multiple antennas, or the number of multiple antennas included in the mobile station (UE) 100 has a multiple antenna (RNS) 200 ), It must be greater than the number to communicate smoothly with each other.

If the number of multiple antennas of the mobile station (UE) 100 is smaller than the number of antennas of the asynchronous radio network (RNS) 200, the asynchronous radio with the mobile station (UE) 100 The network (RNS) 200 may perform smooth communication with each other.

However, since the RRC protocol entity message does not define information on the number of multiple antennas of the cells in the Node B in the RRC protocol entity message, the UE 100 And the asynchronous wireless network (RNS) 200 may not be able to communicate smoothly. In addition, when the FCSS technology is used in the HSDPA using the MIMO scheme, the mobile station (UE) 100 has multiple antennas (UE) that the mobile station (UE) 100 has in order to efficiently communicate with the asynchronous radio network (RNS) 200. A cell in a node B that is equal to or smaller than the number of multiple antennas should be selected.

However, since the RRC protocol entity message does not define information on the number of multiple antennas of cells in the Node B, the mobile station (UE) 100 and the asynchronous radio network (RNS) ( 200) there was a problem that can not communicate smoothly.

The present invention proposed to solve the above problems, Node B of the asynchronous radio network (RNS) in the case of using the MIMO technology and FCSS technology in the HSDPA using the MIMO method in the next generation mobile communication system Realizing a method and a message transfer method for smooth communication between a mobile station and an asynchronous wireless network by transmitting information on the number of multiple antennas of cells in the mobile station to the mobile station (UE) through an RRC protocol message Its purpose is to provide a computer readable recording medium having recorded thereon a program.

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

2 is an exemplary configuration diagram of a general asynchronous mobile communication system (UTRAN).

3 is an explanatory diagram showing the configuration and operation of a MIMO having M multiple antennas in general.

4A is a configuration diagram of a conventional System Information_SIB 3 message.

4B is an embodiment configuration diagram of a System Information_SIB 3 message in accordance with the present invention.

5A is a configuration diagram of a conventional System Information_SIB 4 message.

FIG. 5B is a diagram illustrating an embodiment of a System Information_SIB 4 message in accordance with the present invention. FIG.

6A is a schematic diagram of a conventional Active Set Update message.

6B is an embodiment configuration diagram of an Active Set Update message in accordance with the present invention.

7A to 7C are diagrams illustrating a conventional radio bearer setup message.

8a to 8c are diagrams illustrating one embodiment of a radio bearer setup message according to the present invention;

9A to 9C are diagrams illustrating a conventional radio bearer reconfiguration message.

10A through 10C are diagrams illustrating an embodiment of a conventional radio bearer reconfiguration message.

11 is a flowchart illustrating an operation of a mobile station for message delivery for serving a large amount of data at high speed according to the present invention.

* Explanation of symbols for the main parts of the drawings

100: mobile station 200: asynchronous wireless network

300: wireless communication core network

The present invention for achieving the above object, a message delivery method when using a high speed downlink packet access (HSDPA) using a multiple input and multiple output (MIMO) method to service a large amount of data at high speed in a broadband wireless communication system In the case of using the MIMO technique and the FCSS (Fast Cell Site Selection) technique in the HSDPA using the MIMO scheme, the multiple antennas of the cells in the Node B of the Asynchronous Radio Network (RNS) in the mobile station (UE) (Multiple Antenna) information including the number of MIMO antennas (Number of MIMO Antenna), HSDPA indicator (with or without HSDPA) and MIMO indicator (with or without MIMO), which is information on the number of multiple antennas, is transmitted through a Radio Resource Control (RRC) protocol message. Characterized in that the transmission.

In addition, the present invention is a broadband wireless communication system having a processor for message transmission when using a high speed downlink packet access (HSDPA) using a multiple input and multiple output (MIMO) method to service a large amount of data at high speed In the case of using the MIMO technique and the FCSS (Fast Cell Site Selection) technique in the HSDPA using the MIMO scheme, the multiple antennas of the cells in the Node B of the Asynchronous Radio Network (RNS) in the mobile station (UE) Information including the number of MIMO antennas (Number of MIMO Antenna), HSDPA indicator (with or without HSDPA), and MIMO indicator (with or without MIMO), which is information on the number of multiple antennas, is transmitted through a radio resource control (RRC) protocol message A computer readable recording medium having recorded thereon a program for realizing the function of the present invention is provided.

The present invention provides information on the number of multiple antennas of cells in Node B of UTRAN when MIMO and FCSS technologies are used in HSDPA using MIMO in an asynchronous next generation mobile communication network (UTRAN). By transmitting the RRC protocol message to the mobile station, it is possible to improve the performance of the HSDPA, the quality of the service and the performance of the UTRAN using the MIMO scheme.

To this end, the present invention proposes the following matters.

A method of providing information on the number of multiple antennas of cells in Node B of a UTRAN to a mobile station, wherein a System Information Block (SIB) of a system information message transmitted to the mobile station is initially transmitted. We propose a change to 3 and SIB 4. SIB 3 and SIB 4 provide information on cell selection and reselection, where SIB 3 is used in idle mode mobile stations and SIB 4 is used in connected mode. Done.

In addition, the mobile station transmits the information in the Active Set Update message transmitted by the UTRAN in the Cell_DCH state, including information on the number of multiple antennas of cells in Node B of the UTRAN. Suggest. Here, the Cell_DCH state refers to a state in which the mobile station can make or make a current call, and an Active Set Update message is a message that provides information on cells to which the mobile station can hand off.

In addition, when the mobile station initially sets up a radio bearer, whether or not to use HSDPA in a radio bearer setup message transmitted from the UTRAN to the mobile station, whether or not MIMO is used, and the number of multiple antennas. It is proposed to provide information to the back.

In addition, whether or not to use HSDPA in a radio bearer reconfiguration message that provides information on service change when a radio bearer is established between the mobile station and the UTRAN, whether or not to use MIMO, and multiple antennas It is proposed to provide information such as the number of.

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 order to smoothly use HSDPA using MIMO in asynchronous next generation mobile communication system, System Information SIB 3/4, Active Set Update, Radio Bearer Setup, and The radio bearer reconfiguration message should include new information elements (IE), that is, the number of MIMO antennas, the HSDPA indicator, the MIMO indicator, and the like. The newly defined IE and its description are as follows.

The number of MIMO antennas is 4 bits in length and means the number of multiple antennas of cells in Node B of UTRAN.

The HSDPA indicator (HSDPA Indicator) has a length of 1 bit, and means that cells in Node B of UTRAN support HSDPA technology. That is, "HSDPA Indicator = ON = 1" supports the HSDPA technology, and "HSDPA Indicator = OFF = 0" does not support the HSDPA technology.

The MIMO indicator has a length of 1 bit and indicates whether cells in a node B of the UTRAN support HSDPA technology of the MIMO scheme. That is, "MIMO Indicator = ON = 1" supports the MIMO HSDPA technology, and "MIMO Indicator = OFF = 0" does not support the MIMO HSDPA technology.

The new forms of the new RRC protocol entity messages, including the IE described above, are as follows.

First, to provide information on cell selection and reselection, conventional SIB 3 used in an idle mode mobile station as shown in FIG. 4A and conventional SIB used in a connected mode mobile station as shown in FIG. 5A. 4B and 5B, information (Number of MIMO Anttena) of the number of multiple antennas included in the cells in Node B of the UTRAN is added to the message.

In addition, in the conventional Active Set Update message as shown in FIG. 6A transmitted by the UTRAN in the Cell_DCH state, the multiple antennas of the cells in Node B of the UTRAN are shown in FIG. 6B. Add information about the number (Number of MIMO Anttena).

In addition, in the conventional radio bearer setup message shown in FIGS. 7A to 7C transmitted from the UTRAN to the mobile station at the time when the mobile station initially sets up the radio bearer, the MIMO antenna as shown in FIGS. 8A to 8C. A number of MIMO Antenna, an HSDPA Indicator, and a MIMO Indicator are added.

10A to 10C in a conventional radio bearer reconfiguration message such as FIGS. 9A to 9C which provide information on service change when a radio bearer is established between the mobile station and the UTRAN. A number of MIMO antennas, an HSDPA indicator, and a MIMO indicator are added.

After receiving the message including the new IE, the mobile station using the MIMO-type HSDPA generates a new MIMO active set for supporting the MIMO-type HSDPA after receiving the USIM or the memory of the mobile station itself. There is.

Here, the MIMO active set is a table or a database in which the mobile station has information of cells capable of using FCSS while the HSDPA of the MIMO method, and the mobile station can perform the FCSS function through this. have.

The operation flow of such a mobile station is described in more detail with reference to FIG.

First, the mobile station (UE) receives an RRC protocol entity message from the UTRAN (111). In this case, the received message is one of System Information SIB 3 / SIB 4 or Active Set Update, Radio Bearer Setup, or Radio Bearer Reconfiguration messages.

Thereafter, in the received message, the existence of information (Number of MIMO Anttena) of the number of multiple antennas included in the cells in Node B of the UTRAN is checked (112).

Next, when information (Number of MIMO Anttena) of the number of multiple antennas of cells in Node B of UTRAN is present in the received message (113), multiple antennas (Multiple Antenna) Check the number of (114).

Thereafter, the mobile station configures a MIMO active set to store a cell identifier (Cell ID) and the number of multiple antennas of the received message (115).

Then, the processor processes other information included in the received message (116).

On the other hand, if the number of MIMO Anttena (Number of MIMO Anttena) of the cells in the Node B of the UTRAN does not exist in the received message (113), it is included in the received message immediately Other information that has been processed (116).

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.

The present invention as described above, the system information of the previously defined UTRAN RRC protocol entity (System Information) SIB 3 / SIB 4, Active Set Update, Radio Bearer Setup (Radio Bearer Setup) and radio bearer By adding new IEs without changing the IEs of the Radio Bearer Reconfiguration message, compatibility with the existing system can be maintained, and HSDPA using MIMO can be efficiently used.

Claims (9)

In a message delivery method when using a high speed downlink packet access (HSDPA) using a multiple input and multiple output (MIMO) method to service a large amount of data at high speed in a broadband wireless communication system, In the case of using the MIMO technique and the FCSS (Fast Cell Site Selection) technique in the HSDPA using the MIMO scheme, the multiple antennas of the cells in the Node B of the Asynchronous Radio Network (RNS) in the mobile station (UE) ) Transmitting information including the number of MIMO antennas, the number of MIMO antennas, the HSDPA indicator (with or without HSDPA), and the MIMO indicator (with or without MIMO), through the RRC (Radio Resource Control) protocol message. Message delivery method for high-speed service of a large amount of data in a broadband wireless communication system characterized in that. The method of claim 1, As the RRC (Radio Resource Control) protocol message, System Information Uses System Information Block (SIB) 3/4 message, Active Set Update message, Radio Bearer Setup message, and Radio Bearer Reconfiguration message. Message transmission method for high-speed service of a large amount of data in a broadband wireless communication system, characterized in that. The method of claim 2, The system information SIB 3/4 message, In order to provide information on cell selection and reselection, a number of MIMO antennas (number of multiple antennas) is included. How the message is delivered. The method of claim 2, The active set update message is, The mobile station is transmitted by the asynchronous wireless network in a state of making or making a current call (Cell_DCH state), and includes a large number of MIMO antennas (multiple antennas). Message delivery method for serving data at high speed. The method of claim 2, The radio bearer setup message, When the mobile station initially sets up a radio bearer, it is transmitted from the asynchronous radio network to the mobile station, and the number of MIMO antennas (number of multiple antennas), HSDPA indicator (with or without HSDPA), and MIMO indicator (with or without MIMO) are used. Message transmission method for high-speed service of a large amount of data in a broadband wireless communication system, characterized in that the transmission. The method of claim 2, The radio bearer reconfiguration message, When a radio bearer is established between the mobile station and the asynchronous radio network, information on service change is provided, the number of MIMO antennas (number of multiple antennas), an HSDPA indicator (with or without HSDPA), and a MIMO indicator (using MIMO). Message transmission method for high-speed service of a large amount of data in a broadband wireless communication system, characterized in that the transmission. The method according to any one of claims 1 to 6, The mobile station, Receives a System Information SIB 3/4 message, an Active Set Update message, a Radio Bearer Setup message, and a Radio Bearer Reconfiguration message from the asynchronous wireless network. MIMO Active Set having an identifier (Cell ID) and information on the number of multiple antennas (Multiple Antennas) of cells in Node B of an asynchronous radio network (here, MIMO active The aggregation is a table or a database in which the mobile station has information on cells capable of using FCSS technology while using HSDPA in MIMO scheme, through which the mobile station can perform FCSS function. Message transmission method for high-speed service of a large amount of data in a broadband wireless communication system. The method of claim 7, wherein The operation of the mobile station, A first step of receiving an RRC protocol entity message from the asynchronous wireless network; A second step of checking whether a number of MIMO Anttena is present in the received message on the number of multiple antennas of cells in Node B of the asynchronous wireless network; As a result of the second step checking, when there is information (Number of MIMOAnttena) about the number of multiple antennas of cells in Node B of UTRAN in the received message, the multiple antenna Confirming the number of third steps; After performing the third step, a MIMO active set is configured to store the cell ID and the number of multiple antennas of the received message, and to process other information included in the received message. Fourth step; As a result of the second step checking, when there is no information (Number of MIMO Anttena) about the number of multiple antennas of cells in Node B of the asynchronous wireless network in the received message, Step 5 processing the other information contained in the message Message delivery method for high-speed service of a large amount of data in a broadband wireless communication system comprising a. In a broadband wireless communication system equipped with a processor for message transmission when using High Speed Downlink Packet Access (HSDPA) that uses a multiple input and multiple output (MIMO) scheme to service large amounts of data at high speed, In the case of using the MIMO technique and the FCSS (Fast Cell Site Selection) technique in the HSDPA using the MIMO scheme, the multiple antennas of the cells in the Node B of the Asynchronous Radio Network (RNS) in the mobile station (UE) ) A function of transmitting information including the number of MIMO antennas, the number of MIMO antennas, the HSDPA indicator (with or without HSDPA), and the MIMO indicator (with or without MIMO), through the RRC (Radio Resource Control) protocol message. A computer-readable recording medium having recorded thereon a program for realizing this.