KR100749449B1 - Device and Method for Analyzing MAP IE in Portable Internet System - Google Patents

Abstract

The present invention relates to an apparatus and method for interpreting map information elements in a portable Internet system.

To this end, the present invention, the MAP interpreter control unit for receiving the MAP data, a memory for temporarily storing the MAP data and the MAP information element analysis device of the terminal including a MAP decoder for interpreting the MAP information element is received when received A terminal that interprets basic information of a link MAP message, interprets MAP information elements for each DIUC, and if there is an uplink MAP message, interprets basic information of an uplink MAP message, and interprets uplink MAP information elements for each UIUC. Provides a method of interpreting MAP information elements in.

According to the present invention, the MAP information element can be efficiently analyzed in the portable Internet system based on the broadband wireless access network, thereby reducing the MAP analysis time in the mobile terminal, enabling fast physical layer control, The effect of enabling data communication can be expected.

Map Interpreter, Information Element, MAP, IE, Nibble, For-Loop, Mobile Internet, Terminal

Description

Device and Method for Analyzing Map Information Elements in Mobile Internet System {Device and Method for Analyzing MAP IE in Portable Internet System}

1 is a block diagram schematically illustrating a hierarchical structure of a terminal for performing communication in a portable Internet system based on a broadband wireless access network;

2 is a block diagram showing the structure of a MAP used for communication in a portable Internet system;

3 is a block diagram showing the structure of a MAP information element including For-loop syntax;

4 is a block diagram showing the structure of a MAP information element including a For-loop syntax according to an embodiment of the present invention;

5 is a block diagram schematically illustrating the structure of a MAP analyzer according to an embodiment of the present invention;

6 is a block diagram illustrating a classification method of MAP information elements in a MAP interpreter according to an embodiment of the present invention;

7 is a flowchart illustrating a method of interpreting a MAP information element according to an embodiment of the present invention.

The present invention relates to an apparatus and method for interpreting a Map Information Element (IE) in a portable Internet system. More specifically, when the structure of a map (MAP, hereinafter referred to as 'MAP') used for high-speed data transmission in a portable Internet system is changed and transmitted, a map whose structure is changed is easily interpreted by the mobile terminal receiving the same. A device for analyzing map information elements and a method for analyzing the same.

Currently, a network for transmitting data uses a local area network (LAN) in a limited area of a building, and a wide area network (WAN) in a region, a province, a country, and a specific region of a country. In addition, as the amount of data communication in the LAN area increases significantly, the Metropolitan Area Network (MAN), which connects the space between the WAN and the LAN, is also greatly developed.

Physical networks forming a MAN include optical communication networks, cable networks, and digital subscriber line (DSL) networks. In large companies, many people connect to the network and process a large amount of data. Therefore, it is efficient to use an optical communication network that can provide high-capacity and high-speed data communication. However, the installation rate of the optical network among the total network is only 5% or less, and the construction of a new optical network requires a lot of cost and time. On the other hand, small companies and homes generally use networks such as cable networks and DSL networks. It is difficult to support business subscribers because cable networks use cable modems mainly based on residential coaxial cable TV. On the other hand, the DSL network using the existing telephone line has a limitation in the distance that can be transmitted, and also has a limitation in the transmission speed. In addition, communication networks such as DSL networks and cable networks have a disadvantage in that they are inefficient in a large urban area with a high population density and a high data transmission rate because of a relatively small frequency band when a subscriber transmits data.

In order to cope with this problem, it is based on fixed broadband wireless access (BWA), which provides a communication service at a relatively low price by reducing the cost of laying cables by forming a wireless network instead of an optical or coaxial cable. A Broadband Wireless Access Network (Wireless MAN) has been proposed, named IEEE 802.16 Wireless MAN.

In addition, as the number of users who want to transmit and receive data while moving recently, a portable Internet system (WiBro: Wireless Broadband or HPi: High-speed Portable Internet) based on such a broadband wireless access network has been provided.

1 is a block diagram schematically illustrating a hierarchical structure of a terminal for performing communication in a portable Internet system based on a broadband wireless access communication network.

The mobile terminal for transmitting and receiving data in the portable Internet system includes a physical layer 110, MAC layer 120 and the upper control layer 130.

The physical layer 110 is a part for modifying an electrical and mechanical interface for data transmitted between the portable Internet system and the mobile terminal. Here, the transmission rate of the physical layer for data transmission in the portable Internet system of the broadband wireless access network is set to 50 Mbps or more.

The upper control layer 130 executes the transmitted data in the mobile terminal.

The media access control (MAC) layer 120 interprets the MAP received from the base station of the portable Internet system to generate a message for the control of the physical layer 110 and the upper control layer 130, and to encrypt the transmission and reception data. This part performs operations such as decryption.

In a portable Internet system based on a broadband wireless access network that transmits data at a high speed, frame scheduling of the upper control layer 130 is important for processing various data at high speed, but the upper control layer 130 and the physical layer 110 may be The role of the MAC layer 120 to connect and centralize and manage resources is more important. Accordingly, the MAC layer 120 must also operate at the same high speed as the speed of the physical layer 110 to enable real-time service according to high-speed data processing.

In a portable Internet system based on a broadband wireless access network, MAP plays an important role in transferring information of a system to a mobile terminal.

The mobile terminal analyzes the received MAP every frame to obtain system information and data allocation information, and transmits necessary control information to the physical layer 110 based on the obtained information. The physical layer 110 receives control information from the MAP interpreter of the mobile terminal, and demodulates and decrypts the received data.

At this time, if the analysis time of the MAP analyzer is increased, the control information transmitted to the physical layer 110 is also delayed, and the reception of data is delayed. Therefore, implementation complexity and analysis time of a MAP analyzer of a terminal in a portable Internet system based on a broadband wireless access network become an important variable for high speed data transmission.

In the existing broadband wireless access network system, the MAP information elements defined by the For-loop exist in the unit of the contents included in the For-loop syntax and the contents before the For-loop syntax in order to reduce the size of the MAP transmitted. To be stored. Therefore, since the MAP analyzer mounted in the mobile terminal had to receive and analyze data in bit units, the complexity of implementation of the MAP analyzer is increased and the analysis time of the data is lengthened, which may cause problems in high-speed data transmission and reception.

In order to solve this problem, the bandwidth allocation map message processing to perform a packet fragmentation function for the media access control frame data through the domestic patent application 10-2000-0082162 "bandwidth allocation map message processing apparatus" Although a device is provided, an allocation map processing device in a cable modem system is provided, and thus there is still a problem that cannot be applied to a portable Internet network that transmits data wirelessly.

In order to solve this problem, the present invention is structured so that the contents of the For-loop syntax and the contents of the For-loop syntax of the MAP information elements used for high-speed data transmission in the portable Internet system are filled with information in units of 4 bits. The present invention provides a map information element analyzing apparatus and an analysis method for allowing a MAP interpreter of a mobile terminal to receive data in 4-bit units so as to easily perform MAP analysis.

In order to achieve the above technical problem, the present invention provides a MAP information element analyzing apparatus, which is a device for analyzing a MAP information element (MAP IE) in a terminal of a wireless portable Internet system. MAP interpreter control unit for verifying the; A memory for temporarily storing MAP data received by the MAP interpreter control unit; And receiving MAP data in units of multiples of predetermined bits from the memory, and receiving length information of the MAP data from the MAP interpreter control unit, wherein the MAP information element—herein, all contents included in the MAP information element are preset. And a MAP decoder that interprets that the content that is not a multiple of a bit is additionally included in order to be a multiple of the bit.

In addition, in order to achieve the second technical problem, the present invention provides a method of analyzing a MAP information element, which is a method of analyzing a MAP information element (MAP IE) in a terminal of a wireless portable Internet system. Receiving a MAP information element and interpreting basic information of a downlink MAP message among the MAP information elements; (b) interpreting MAP information elements for each DIUC; (c) if there is an uplink MAP message in the MAP information element, interpreting basic information of the uplink MAP message; And (d) interpreting the uplink MAP information element for each UIUC.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

In addition, when a part is said to "include" a certain component, it means that it may further include other components, without excluding other components unless otherwise stated.

In addition, the term module described herein refers to a unit for processing a specific function or operation, which may be implemented in hardware or software, or a combination of hardware and software.

2 is a block diagram showing the structure of a MAP used for communication in a portable Internet system.

In the portable Internet system of a broadband wireless access network, a MAP used for data transmission is composed of information elements whose size is a multiple of 4 bits (nibble), and each information element is used to convey various control information to a mobile terminal. . In addition, the size of the MAP should be a multiple of bytes. Therefore, when the content of the MAP is not a multiple of the byte, the padding bits are included at the last to adjust the multiple of the byte. .

3 is a block diagram illustrating a structure of a MAP information element including a for-loop syntax.

In a broadband wireless access network, the size of the MAP information element should be a multiple of 4 bits. The contents of the For-Loop are stored in bits, and the information before and after the For-Loop syntax also stores data in bits. Here, when the contents of the MAP information element are not multiples of 4 bits, data is added so as to be multiples of 4 bits by including a padding bit at the end.

Basically, since the size of MAP and MAP information elements is a multiple of 4 bits, the MAP interpreter can operate by receiving data in units of 4 bits. However, the situation is different for MAP information elements that contain a for-loop construct that must loop multiple times.

Since the MAP interpreter of the mobile terminal that receives the MAP information element including the For-loop syntax through the MAP cannot determine the number of loops executed by the For-loop syntax, the contents of the For-loop syntax and the For- If the content before the loop syntax is aligned bit by bit, it becomes impossible to receive and interpret data in 4 bit units.

4 is a block diagram illustrating a structure of a MAP information element including a for-loop syntax according to an embodiment of the present invention.

According to the present invention, the MAP information element including the for-loop syntax may include the above-described for-loop syntax in order to solve the fact that the MAP interpreter cannot receive and interpret data in 4-bit units. Unlike this, the contents of the for-loop syntax and the contents before the for-loop syntax are all set to store data in 4-bit units.

Therefore, when generating data, if the contents of the For-loop syntax and the contents before the For-loop syntax are not multiples of 4 bits, the padding bits are included in each of the contents that are not multiples of 4 bits. Add data so that everything is a multiple of 4 bits.

Adding data increases the size of the overall MAP information element. However, since the contents of the For-loop syntax and the contents of the For-loop syntax are filled with 4 bits, the MAP interpreter of the mobile terminal uses 4 bits. Since the data can be received and interpreted, the performance of the MAP interpreter can be improved, and the complexity of implementing the MAP interpreter can be reduced.

The MAP interpreter of the mobile terminal performs a function of receiving and interpreting a burst corresponding to the MAP among the received downlink data DL_data. In a portable Internet system, MAPs can be roughly classified into normal DL / UL MAPs and compressed MAPs.

5 is a block diagram schematically showing the structure of a MAP analyzer according to an embodiment of the present invention.

The MAP interpreter presented here is a MAP interpreter using compressed MAP. The MAP interpreter detects the existence, position, and demodulation information of data transmitted and received in downlink (DL) and uplink (UL) in a frame. In addition, a register for controlling the physical layer 110 may be set based on such information.

The MAP interpreter according to the present invention includes a MAP interpreter controller 510, a MAP decoder 520, and a memory 530.

The MAP interpreter controller 510 manages the cyclic redundancy check (CRC-32) check function and the details stored in the memory 530 on the received MAP data. Here, CRC-32 is an error detection method for verifying the reliability of data. The MAP analyzer control unit 510 raises the bit information of the received data by 32 bits and divides it by a preset key value, so that the remainder remains. In this case, the base station transmitting the data raises the original bit information n 32 bits, adds the remaining bits r, and then sets and transmits the transmission bit n + r. The mobile terminal receiving the data set by the transmission bit (n + r) divides the received data by a preset key value and checks whether the remainder is 0. When 0 is reached, it is confirmed that no error has occurred in the data. If it is not 0, it is determined that an error has occurred, thereby checking the reliability of the data.

The MAP decoder 520 receives the length information of the data received from the MAP analyzer controller 510, receives the MAP stored in the memory 530, and interprets the MAP information element.

The memory 530 stores the MAP received from the MAP analyzer controller 510 and provides the MAP to the MAP decoder 520.

At this time, when storing the received MAP in the memory 530, the MAP analyzer controller 510 stores the received MAP in 32-bit units for fast delivery. When the MAP decoder 520 reads the MAP stored from the memory 530 to interpret the MAP information element, the MAP decoder 520 reads the MAP in units of 4 bits.

As described above, the MAP interpreter including the MAP interpreter control unit 510, the MAP decoder 520, and the memory 530 may be used to generate a control signal of the physical layer 110 from the received data.

6 is a block diagram illustrating a classification method of MAP information elements in a MAP interpreter according to an embodiment of the present invention.

The MAP information elements include a downlink information usage code (DIUC) / uplink information usage code (UIUC) having a length of 4 bits. Structure).

The downlink MAP information element is used to indicate data burst information from DIUC 0 to DIUC 12 (610). The DIUC 15 630 has an extended MAP information element (Extended IE) form and is used to convey control information. The DIUC 14 620 has a second extended MAP information element (Extended-2 IE) form. It is used to convey control information and data burst information.

The uplink MAP information element is used to indicate data burst information from UIUC 1 to UIUC 10 640, the UIUC 15 680 has an extended MAP information element (Extended IE) form, and is used to convey control information. UIUC 11 660 has a form of a second extended MAP information element (Extended-2 IE) and is used to convey control information and data burst information. In addition, UIUC 0, 12, 13, 14, etc. (650, 670) are used to convey specific control information, such as feedback, ranging, sounding, CDMA information.

The MAP interpreter of such a mobile terminal has a modular interpreter for each information use code (IUC) according to downlink and uplink to interpret MAP information elements.

7 is a flowchart illustrating a method of interpreting a MAP information element according to an embodiment of the present invention.

The mobile terminal initially receives the MAP from the base station. When MAP reception is detected in the mobile terminal (S710), the MAP interpreter controller 510 interprets basic information of the compressed downlink MAP message (S720).

The MAP decoder 520 analyzes downlink MAP information elements for each DIUC by the number of MAP information elements of the DIUC, and confirms data burst information, control information, and the like. In this case, data burst information included in DIUC 0 to DIUC 12 (610), control information and data burst information in the form of a second extended MAP information element (Extended-2 IE) included in DIUC 14 620, and DIUC Control information in the form of an extended MAP information element (Extended IE) included in 15 630 is interpreted by the MAP decoder 520, respectively (S730).

When the interpretation of the downlink MAP information element is completed, the MAP interpreter controller 510 checks whether the uplink MAP is included in the received MAP (S740). If the existence of the uplink MAP is confirmed, the MAP interpreter controller 510 interprets basic information of the compressed uplink MAP message (S750).

The MAP decoder 520 analyzes uplink MAP information elements for each UIUC by the number of MAP information elements of the UIUC, and analyzes data burst information, control information, specific control information, and the like. Also in this case, fast feedback information by UIUC 0 650, data burst information by UIUC 1 to UIUC 10 640, and second extended MAP information element by UIUC 11 660 (Extended-). 2 IE) control information and data burst information, ranging information by UIUC 12, sounding information by UIUC 13, CDMA information by UIUC 14, and extended MAP information elements by UIUC 15 Control information is interpreted by the MAP decoder 520, respectively (S760).

In this case, after checking whether all downlink MAP messages have been delivered after step S730, when the downlink MAP message has not yet been interpreted, steps S720 and S730 may be repeatedly executed.

In addition, it is possible to check whether all uplink MAP messages have been delivered after step S760, and if there is an uplink MAP message that has not been interpreted yet, steps S750 and S760 may be repeatedly executed.

The embodiments of the present invention described above are not implemented only through the apparatus and the method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded. Implementation may be easily implemented by those skilled in the art from the description of the above-described embodiments.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

According to the above-described configuration, the MAP information element can be efficiently analyzed in the portable Internet system based on the broadband wireless access network, thereby reducing the MAP analysis time in the mobile terminal, thereby enabling fast physical layer control and high speed. The effect that data communication becomes possible can be expected. In addition, it is possible to reduce the complexity of hardware for analyzing the MAP, it is possible to reduce the amount of mobile terminal, it can be expected to reduce the production cost.

Claims (17)

An apparatus for analyzing a MAP information element (MAP IE) in a terminal of a wireless portable Internet system, A MAP analyzer control unit for receiving MAP data and verifying reliability; A memory for temporarily storing MAP data received from the MAP interpreter control unit; And Receive the MAP data from the memory in predetermined multiples of a predetermined bit, and receive length information of the MAP data from the MAP interpreter control unit, and include the MAP information element in the MAP information element. MAP decoder for interpreting that the content that is not a multiple of the predetermined bit further includes a padding bit so that all the specified content is a multiple of a predetermined predetermined bit. MAP information element analysis device comprising a. The method of claim 1, wherein the MAP information element, And a for-loop syntax including the padding bit in the content that is not a multiple of the predetermined bit. The method of claim 2, wherein the predetermined bit, MAP information element analysis device, characterized in that 4 bits. The method of claim 1, wherein the MAP information element, A downlink information usage code (DIUC) and an uplink information usage code (UIUC), characterized in that it comprises an MAP information element interpreting apparatus. The method of claim 4, wherein the DIUC, DIUC 0 through DIUC 12 carrying data burst information; DIUC 15 for transmitting control information in the form of an extended MAP information element (Extended IE); And DIUC 14 conveying control information and data burst information in the form of a second extended MAP information element (Extended-2 IE) MAP information element analysis device comprising a. The method of claim 4, wherein the UIUC, UIUC 1 to UIUC 10 for transmitting data burst information; UIUC 15 for transmitting control information in the form of an extended MAP information element; UIUC 11 for conveying control information and data burst information in the form of a second extended MAP information element; UIUC 0 for conveying fast feedback information; UIUC 12 for conveying ranging information; UIUC 13 for conveying sounding information; And UIUC 14 Delivering CDMA Information MAP information element analysis device comprising a. delete delete The method of claim 1, wherein the memory, And receiving the MAP data in 32-bit units from the MAP analyzer control unit and transferring the stored MAP data in 4-bit units to the MAP decoder. delete In the method of interpreting MAP Information Element (MAP IE) in a terminal of a wireless portable Internet system, (a) receiving a MAP information element and interpreting basic information of a downlink MAP message among the MAP information elements; (b) interpreting the MAP information element for each downlink information usage code (DIUC); (c) if there is an uplink MAP message in the MAP information element, interpreting basic information of the uplink MAP message; And (d) interpreting the uplink MAP information element for each Uplink Information Usage Code (UIUC); MAP information element interpretation method comprising a. The method of claim 11, wherein step (a) comprises: And the MAP information element comprises a for-loop syntax. The method of claim 12, And the MAP information element includes a padding bit inserted to make the content before the For-loop syntax and the content of the For-loop syntax a multiple of a predetermined bit. The method of claim 11, wherein step (b) comprises: And analyzing downlink MAP information elements by the number of MAP information elements of the DIUC to confirm data burst information and control information. The method of claim 14, Data burst information included in DIUC 0 through DIUC 12, control information and data burst information in the form of a second extended MAP information element (Extended-2 IE) included in DIUC 14, and extended MAP information element included in DIUC 15 (Extended IE) MAP information element interpretation method characterized in that for confirming the control information. The method of claim 11, wherein step (d) comprises: And analyzing uplink MAP information elements by the number of MAP information elements of the UIUC to confirm data burst information, control information, and specific control information. The method of claim 16, Data burst information included in UIUC 1 to UIUC 10, control information and data burst information in the form of a second extended MAP information element (Extended-2 IE) included in DIUC 11, extended MAP information element included in UIUC 15 (Extended IE) control information in the form and MAP information element analysis method characterized in that the specific control information carried by the UIUC 0, 12, 13, 14 to confirm.

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