KR101300997B1 - Method and System for Accessing to Mobile Internet Using Profile Set Information - Google Patents

Abstract

The present invention relates to a method and system for accessing a mobile Internet using profile setting information. The mobile Internet access method performed between the mobile terminal and the base station according to the present invention comprises the steps of: transmitting a DCD including profile information of a specific communication standard from the base station to the mobile terminal; Determining whether the communication standard is supported by the mobile terminal receiving the DCD; And when the mobile terminal supports the communication standard as a result of the determination, performing the wireless Internet access through the communication standard without negotiating the functions defined in the profile. According to the present invention, when a mobile terminal accesses a base station for mobile Internet use, the mobile terminal negotiates only whether the mobile WiMAX profile is supported, and, if the mobile terminal supports the profile, negotiates the functions defined in the profile. By eliminating this, the initial access time can be shortened and the radio resources can be efficiently operated.

WiMAX, WiBro, WiMAX, Wibro, Mobile Internet, Mobile Internet

Description

Method and System for Accessing to Mobile Internet Using Profile Set Information}

1 is a flowchart illustrating a conventional mobile Internet access process between a mobile terminal and a base station.

2 is a flowchart illustrating a process of accessing a mobile Internet between a mobile terminal and a base station according to changed profile setting information.

3 is a detailed flowchart illustrating a mobile internet access process between a mobile terminal and a base station performed according to an embodiment of the present invention.

The present invention relates to a method and system for accessing a mobile Internet using profile setting information. More specifically, the mobile terminal negotiates only support of a mobile WiMAX profile when a mobile terminal accesses a base station for mobile internet use. If the profile is supported, the mobile internet access method and system using the profile setting information that reduces the initial access time and enables the efficient operation of radio resources by omitting the negotiation of the functions defined in the profile. will be.

Currently, there are various technical standards that enable the use of the mobile Internet through a portable mobile terminal, such as WiMAX (World Interoperability for Microwave Access) or Wibro (Wibro; Wireless Broadband Internet).

WiMAX and WiBro are technical standards based on the Institute of Electrical and Electronics Engineers (IEEE) 802.16e-2005 and IEEE802.16-2004, which are international standards, and the IEEE 802.16e-2005 and IEEE802.16-2004 standards have various optional functions. It contains them. For example, in terms of a multiple access scheme, SC (Single Carrier), SCa (Single Carrier a), Orthogonal Frequency Division Multiplexing (OFDM), Orthogonal Frequency Division Modulation (OFDMA) Multiple access schemes such as Multiplexing Access are included, and many kinds of fast fourier transform (FFT) sizes are accommodated to accommodate various frequency environments.

In addition, the IEEE 802.16e-2005 and IEEE 802.16-2004 standards include Automatic Repeat Request (ARQ), Hybrid-ARQ (H-ARQ), Fast BS Switching (FBSS), Various functions such as Packet Header Suppression (PHS), Uplink power control mode, Compressed MAP / sub-MAP, etc. are included as optional functions.

The reason why the IEEE802.16e-2005 and IEEE802.16-2004 standards include various options in this way is that the standardization work was performed without specifying the required functions for the standard at the beginning of the standard creation. If a standard including a wide range of optional functions is implemented in a portable Internet access system and a mobile terminal without any filtering, the implementation process may be complicated due to various functions.

Therefore, in order to avoid implementation complexity, a method of selecting only a part of the above-described various optional functions and implementing them in a base station and a mobile terminal may be considered. However, in this case, if the carrier and the manufacturer of the mobile terminal is implemented independently, compatibility problems between systems may occur.

Accordingly, the WiMAX, an international consultation organization, selects the functions that are deemed necessary to be implemented from the many optional functions defined in the IEEE802.16e-2005 and IEEE802.16-2004 standards. ).

By defining the Mobile WiMAX Profile, manufacturers of systems and mobile terminals that want to obtain WiMAX certification should not implement all the functions of the IEEE802.16e-2005 and IEEE802.16-2004 standards. You only need to implement the features on the profile specified by WiMAX. This ensures compatibility with WiMAX-certified products.

Meanwhile, although base stations and mobile terminals for Mobile WiMAX and WiBro services include functions based on the Mobile WiMAX Profile, the current IEEE802.16e-2005 and IEEE802.16 The -2004 standard defines that the base station and the mobile terminal separately perform negotiation on mutually supportable functions.

1 is a flowchart illustrating a conventional mobile Internet access process between a mobile terminal and a base station. For example, in the environment based on IEEE 802.16d / e, a mobile terminal that wants to switch from an idle mode to an awake mode for a mobile Internet access performs a process as shown in FIG. 1. A detailed description of each procedure in FIG. 1 is as follows.

RNG-REQ / RNG-RSP (Ranging-Request / Ranging-Response) (S6, S8): It is divided into PHY ranging and MAC ranging. In PHY ranging, frequency and In the MAC ranging, MAC ranging and MAC version information of the mobile terminal 100 are transmitted to the base station 200, and the base station 200 transmits the MAC address and MAC version information. Allocate a basic / primary CID.

SBC-REQ / SBC-RSP (SS Basic Capability Request / SS Basic Capability Response) (S10, S12): A step of negotiating basic physical communication capability (basic capability) between the mobile terminal 100 and the base station 200, modulation (modulation) (64- QAM, CTC, H-ARQ, etc.) and permutation (Band AMC, O-PUSC, etc., etc.) are finally determined.

PKM-REQ / PKM-RSP (Private Key Management Request / Private Key Management Response) (S14): A step of performing authentication for the mobile terminal 100 and the user.

REG-REQ / REG-RSP (Registration Request / Registration Response) (S16, S18): A step in which the mobile terminal 100 and the base station 200 negotiate necessary functions for communication, and the above-described SBC procedure (S10, S12). Similar to). Through the Registration (S16, S18) procedure, it is determined whether to support Automatic Repeat ReQuest (ARQ) and mobility.

DSA-REQ / DSA-RSP (Dynamic Service Addition Request / Dynamic Service Addition Response) (S20, S22): The mobile terminal 100 and the base station 200 establish a connection necessary for transmitting and receiving traffic. Set up a connection for each up / down link.

According to the procedure of Figure 1, the mobile terminal 100 and the base station 200 must perform the procedure to the REG-REQ / REG-RSP (S16 / S18) basic communication functions (ARQ, H-ARQ, Open-loop) Power negotiation, Sub-MAP, PKMv2, etc.) will be terminated and the function will be available.

As such, due to the mutual mismatch between the Mobile WiMAX Profile and the IEEE802.16e-2005 / IEEE802.16-2004 standards, negotiation of mutual support functions between the base station and the mobile terminal must be separately performed when the system is connected. As a result, connection time may be delayed and radio resources may be wasted due to transmission and reception of messages for negotiation.

In addition, the base station / mobile terminal can use the functions included in the Mobile WiMAX Profile (ARQ, H-ARQ, Open-loop power control, Sub-MAP, PKMv2, etc.) after the negotiation is completed. As a result, there may be a problem that the interoperability between the base station and the mobile terminal is reduced and the complexity increases. Furthermore, there is a problem in that the load of the base station increases because the base station stores the negotiated result for the functions supported by the mobile terminal.

In order to solve the above problems, the present invention, the mobile terminal negotiates only whether to support the Mobile WiMAX Profile (Mobile WiMAX Profile) when accessing the base station for mobile Internet use, and if the profile is defined in the profile It is to provide a method and system for accessing a mobile Internet using profile setting information that reduces initial access time and enables efficient operation of radio resources by omitting negotiation of functions. Other objects of the present invention will become more apparent from the following detailed description and the accompanying drawings.

Mobile Internet access method according to an embodiment of the present invention that can achieve the above object, in the mobile Internet access method performed between the mobile terminal and the base station, the downlink channel description including profile information of a specific communication standard ( Transmitting a Downlink Channel Description (DCD) message from the base station to the mobile terminal; Determining whether the mobile communication terminal supports the specific communication standard by receiving the downlink channel description message; And if the mobile terminal supports the specific communication standard as a result of the determination, performing a wireless Internet access through the specific communication standard without negotiating the functions defined in the profile.

According to another aspect of the present invention, a method for accessing a mobile Internet at a base station includes: receiving a request for accessing a wireless internet from a mobile terminal; Transmitting a downlink channel description (DCD) message including profile information of a specific communication standard to the mobile terminal; Receiving a ranging request message (RNG-REQ) including a MAC version encoding value of the specific communication standard from the mobile terminal; Transmitting a ranging response message (RNG-RSP message) including MAC address information of the mobile terminal to the mobile terminal; And setting a profile corresponding to the specific communication standard with the mobile terminal.

According to still another aspect of the present invention, there is provided a method for accessing a mobile Internet in a mobile terminal, the method comprising: requesting a base station for wireless internet access; Receiving a downlink channel description (DCD) message including profile information of a specific communication standard from the base station; Determining whether the mobile terminal supports the specific communication standard; If the mobile terminal supports the specific communication standard as a result of the determination, transmitting a ranging request message (RNG-REQ) including a MAC version encoding value of the specific communication standard to the base station; Receiving a ranging response message (RNG-RSP message) including MAC address information of the mobile terminal; And setting a profile corresponding to the base station and the specific communication standard.

The present invention proposes a method for finishing communication function negotiation in a ranging request / ranging response (RNG-REQ / RNG-RSP) step, which is a first step of a negotiation procedure for wireless Internet access. do.

Currently, the base station and the mobile station use the "MAC version encoding" field of the downlink channel description (DCD) message and the ranging request (RNG-REQ) message, respectively. It conveys information about the version.

That is, the MAC version is set by the time when the standard is finally approved and distributed by the IEEE, and represents the standard implementing the mobile terminal and the base station by the MAC version. The value of the "MAC version encoding" field defined in the current specification is shown in Table 1 below.

[Table 1]

[Value of "MAC version encoding" field defined in current standard]

1: Indicates conformance with IEEE Std 802.16-2001

2: Indicates conformance with IEEE Std 802.16c-2002 and its predecessors

3: Indicates conformance with IEEE Std 802.16a-2003 and its predecessors

4: Indicates conformance with IEEE Std 802.16-2004

5: Indicates conformance with IEEE Std 802.16-2004 and IEEE Std 802.16e-2005

6-255: Reserved

In one embodiment of the present invention, by changing the definition of the "MAC version encoding" field, a negotiation procedure for a function defined in Mobile WiMAX or WiBro when accessing the mobile Internet. And omit the mobile internet access using the corresponding function immediately after the RNG-REQ / RNG-RSP procedure.

For example, in case of using Mobile WiMAX and WiBro Profile Set, the field described in the definition of "MAC version encoding" field in [Table 2] below is 8-255, which is a preliminary field for future use. Can be defined using Reserved value.

[Table 2]

[Value of "MAC version encoding" field proposed in the present invention]

1: Indicates conformance with IEEE Std 802.16-2001

2: Indicates conformance with IEEE Std 802.16c-2002 and its predecessors

3: Indicates conformance with IEEE Std 802.16a-2003 and its predecessors

4: Indicates conformance with IEEE Std 802.16-2004

5: Indicates conformance with IEEE Std 802.16-2004 and IEEE Std 802.16e-2005

6: Indicates conformance with Mobile WiMAX

7: Indicates conformance with WiBro

8-255: Reserved

The Mobile WiMAX profile set is a profile defined by the WiMAX Forum and is a set of functions that must be implemented to obtain WiMAX certification among the functions defined in the IEEE 802.16-2004 / IEEE 802.16e-2005 standard. Similarly, the WiBro profile set is a set of essential functions selected by the Telecommunication Technology Association (TTA), a mobile Internet standardization organization in Korea.

In addition to the two profile settings (Mobile WiMAX and WiBro Profile Set) described above, in the case of a mobile terminal using only a specific operator network, it may be defined as a profile setting including unique functions of a specific operator.

6: Represents conformance with Mobile WiMAX or 7 in the downlink channel description MAC version encoding by applying the value of the "MAC version encoding" field of Table 2 proposed in the present invention. In the case of performing mobile Internet access by setting Indicates conformance with WiBro, the access process between the mobile terminal and the base station can be simplified as shown in FIG.

2 is a flowchart illustrating a mobile internet access process between a mobile terminal and a base station according to the changed profile setting information. The processing method of FIG. 2 is, when compared to the conventional processing method shown in FIG. It can be seen that the process has been omitted.

Specifically, when the mobile terminal receives a Mobile WiMAX profile set having a value of "MAC version encoding = 6" from the base station (S30), the mobile terminal transmits an RNG-REQ (S32) to the base station. The base station transmits the RNG-RSP S34 to the mobile terminal as a response.

In RNG-REQ / RNG-RSP process (S32, S34), it is divided into PHY ranging and MAC ranging, and PHY ranging performs physical synchronization of frequency and time. In MAC ranging, information on a mobile station (MAC address, MAC version) is transmitted to a base station and a basic / primary CID is allocated.

In this case, the MAC version information of the mobile terminal is included in the RNG-REQ message transmitted from the mobile terminal to the base station, so that the base station receiving the ranging request message is the MAC version of the mobile terminal. Check the (MAC version). The data field of the ranging request message may be configured, for example, as shown in Table 3 below.

[Table 3] RNG-REQ Message Example

Syntax Size Value Note RNG-REQ Message Format () { Message Type 8 bits 0x04 Meaning RNG-REQ Message Reserved 8 bits 0x00 Reset to '0' Requested Downlink Burst Profile (TLV) 24 bits 0x01 Downlink data rate requested by mobile terminal SS MAC Address (TLV) 64 bits 0x8877665512aa MAC address of the terminal MAC version (TLV) 24 bits 0x06 Meaning to support Mobile WiMAX }

Table 3 shows a configuration of a 128-bit ranging request message data field, and allocates a 24-bit 'MAC version (TLV)' area to include information on a communication method supported by a mobile terminal. It can be seen that.

Through the information included in the 'MAC version (TLV)' region of the ranging request message configured as shown in Table 3, the base station can identify the communication scheme supported by the mobile terminal. On the other hand, the base station includes the MAC address information of the mobile terminal in the ranging response message (RNG-RSP message) to enable communication between the base station and the mobile terminal according to the communication method supported by the mobile terminal. . The data field of the ranging response message transmitted from the base station to the mobile terminal may be configured, for example, as shown in Table 4 below.

[Table 4] RNG-RSP message example

Syntax Size Value Note RNG-RSP Message Format () { Message Type 8 bits 0x05 Meaning RNG-RSP Message Reserved 8 bits 0x00 Reset to '0' SS MAC Address (TLV) 64 bits 0x8877665512aa MAC address of mobile terminal Basic CID (TLV) 32 bits 0x0014 Basic CID Primary CID (TLV) 32 bits 0x0123 Primary CID }

Through the configuration of the data field of the RNG-REQ / RNG-RSP as shown in Table 3 and Table 4, after performing the RNG-REQ / RNG-RSP (S32, S34), basic physical communication function between the mobile terminal and the base station (basic The PKM-REQ / PKM-RSP (Private Key Management) process (S36) may be performed immediately without performing the SBC-REQ / SBC-RSP (SS Basic Capability) process. The PKM-REQ / PKM-RSP (S36) is a step of performing authentication for the mobile terminal and the user.

After performing the PKM-REQ / PKM-RSP (S36), the DSA-REQ / DSA- immediately without the REG-REQ / REG-RSP (Registration) process, which is a process of negotiating a function necessary for communication between the mobile station and the base station. RSP (Dynamic Service Addition) (S38, S40) process is performed.

DSA-REQ / DSA-RSP (Dynamic Service Addition) (S38, S40) is a step for establishing a connection required for a mobile station and a base station to transmit and receive traffic, and establishes a connection for each uplink / downlink. .

As such, by using the value of the field "MAC version encoding = 6" proposed by the present invention in the RNG-REQ / RNG-RSP message transmission step, the mobile terminal and the base station system can mutually promise to perform a call connection based on the WiMAX profile. Can be. By doing so, it is possible to omit the mutual negotiation process by separate SBC-REQ / RSP and REG-REQ / RSP message exchange.

3 is a detailed flowchart illustrating a mobile internet access process between a mobile terminal and a base station performed according to an embodiment of the present invention. 3 illustrates a case in which a base station supports 802.16e-2005 (MAC Version encoding = 5) and uses a Mobile WiMAX Profile Set (MAC Version encoding = 6) as a profile set.

When the base station transmits a downlink channel description (DCD) of MAC Version encoding = 6 (S101), if the mobile terminal receives it (S103) and determines that it supports MAC Version encoding = 6 (S105), RNG-REQ (MAC Version encoding = 6) is transmitted to the base station (S107). When the RNG-RSP is transmitted from the base station (S109) and the mobile terminal receives it, the base station and the mobile terminal are set to the mobile WiMAX profile (S111), respectively. Then, the base station notifies the ACR of network entry of the mobile terminal (S113), and after performing the PKM authentication procedure (S115), connection is established (S117).

Meanwhile, when the base station transmits a downlink channel description of MAC Version encoding = 5 (DCD_ (S119), the mobile terminal receives it (S121) and transmits an RNG-REQ (MAC Version encoding = 5) to the base station. (S123) When the RNG-RSP is transmitted from the base station (S125) and the mobile terminal receives it, it performs the SBC-REQ / SBC-RSP process between the base station and the mobile terminal (S127, S129). After performing the operation (S131), the REG-REQ / REG-RSP (S133, S135) process is carried out, and then the base station notifies the ACR of the mobile terminal network entry (S137), and the connection is established (S117).

On the other hand, S105, when the mobile terminal that receives the downlink channel description (DCD) of MAC Version encoding = 6 from the base station does not support MAC Version encoding = 6, but supports MAC Version encoding = 5, steps S123 ~ S137 It is configured to go through.

As described above, when the mobile terminal supports MAC version encoding = 6 according to the embodiment of FIG. 3, the mobile internet access procedure is performed without going through SBC-REQ / RSP and REG-REQ / RSP. On the other hand, if the mobile terminal does not support MAC Version encoding = 6 and MAC Version encoding = 5, the mobile internet access procedure is performed including SBC-REQ / RSP and REG-REQ / RSP.

As such, when MAC version encoding = 6 is supported, the mobile Internet access procedure is performed without going through SBC-REQ / RSP and REG-REQ / RSP processes, thereby enabling rapid processing and saving of radio resources.

On the other hand, if there is a parameter to be additionally delivered from the parameters not defined in the Profile Set, or if a function that requires selection such as FFT size is included in the Mobile WiMAX / WiBro Profile, the processing is as follows.

That is, if the additional parameters to be transmitted are equally applied to all mobile terminals, downlink channel description / uplink channel description (DCD /), which is a broadcast message, is not transmitted through SBC-REQ / RSP and REG-REQ / RSP. UCD) can be included and transmitted.

On the other hand, unless additional parameters to be equally applied to all mobile terminals, additional parameters may be transmitted and received using unicast messages SBC-REQ / RSP and REG-REQ / RSP.

Meanwhile, implementations of the base station and the mobile terminal for performing the embodiment of FIG. 3 are as follows.

The base station should be provided with means for transmitting a DCD having a value of MAC Version encoding = 6,7 to the mobile terminal.

On the other hand, when the mobile terminal receives a DCD having a value of MAC Version encoding = 6,7 from the base station, the mobile terminal may recognize the DCD and use a communication standard (eg, Mobile WiMAX) defined in the MAC Version encoding = 6,7. Determine if it can support itself. If the mobile terminal has a means for self-supporting a communication standard (eg, Mobile WiMAX) defined in MAC Version encoding = 6,7, it sends RNG-REQ with MAC Version encoding = 6, and standardizes the communication standard. Apply the profile information to perform mobile Internet access between base stations.

When accessing the mobile Internet through MAC Version encoding = 6,7, after the Ranging Response procedure, the mobile terminal omits the process of transmitting SBC-REQ and REG-REQ, and transmits and receives PKM-REQ / PKM-RSP with the base station.

Meanwhile, after the base station transmits the PKM-RSP to the mobile terminal, the base station notifies that the mobile terminal has entered the network to the network node managing the ACR or higher mobile terminal information so that the mobile terminal accesses the mobile Internet.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken as limitations. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

As described above, according to the mobile Internet access method using the profile setting information according to the present invention, when a mobile terminal accesses a base station for mobile internet use, it negotiates only whether it supports the Mobile WiMAX Profile. In the case of supporting the profile, it is possible to shorten the initial access time and efficiently operate radio resources by omitting negotiation about the functions defined in the profile.

Claims (8)

In the mobile Internet access method performed between the mobile terminal and the base station, (A) transmitting a downlink channel description (DCD) message including profile information of a specific communication standard from the base station to the mobile terminal; (B) determining whether the specific communication standard is supported by the mobile terminal receiving the downlink channel description message; And And (c) performing a wireless internet access through the specific communication standard without negotiating the functions defined in the profile when the mobile terminal supports the specific communication standard as a result of the determination. Mobile internet access method. The method of claim 1, wherein the profile information of the specific communication standard has a specific MAC version encoding value. The method of claim 1, wherein the specific communication standard is Mobile WiMAX or WiBro. The method of claim 1, wherein the step (c) of performing a wireless Internet access through the communication standard comprises: Transmitting, by the mobile terminal, a ranging request message (RNG-REQ) including a MAC version encoding value of the specific communication standard to the base station; Transmitting, by the base station receiving the ranging request message (RNG-REQ message), a ranging response message (RNG-RSP message) including MAC address information of the mobile terminal to the mobile terminal; And And setting a profile corresponding to the specific communication standard between the mobile terminal and the base station. In the mobile Internet access method at the base station, Receiving a wireless internet access request from a mobile terminal; Transmitting a downlink channel description (DCD) message including profile information of a specific communication standard to the mobile terminal; Receiving a ranging request message (RNG-REQ) including a MAC version encoding value of the specific communication standard from the mobile terminal; Transmitting a ranging response message (RNG-RSP message) including MAC address information of the mobile terminal to the mobile terminal; And And setting a profile corresponding to the specific communication standard with the mobile terminal. The method of claim 5, wherein the specific communication standard is Mobile WiMAX or WiBro. In the mobile Internet access method in a mobile terminal, Requesting wireless base station access to the base station; Receiving a downlink channel description (DCD) message including profile information of a specific communication standard from the base station; Determining whether the mobile terminal supports the specific communication standard; If the mobile terminal supports the specific communication standard as a result of the determination, transmitting a ranging request message (RNG-REQ) including a MAC version encoding value of the specific communication standard to the base station; Receiving a ranging response message (RNG-RSP message) including MAC address information of the mobile terminal; And And setting a profile corresponding to the specific communication standard with the base station. The method of claim 7, wherein the specific communication standard is Mobile WiMAX or WiBro.

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